WO2018159397A1 - In-vehicle device, information processing device, information gathering method, method for determining deterioration of infrastructure, and program - Google Patents

In-vehicle device, information processing device, information gathering method, method for determining deterioration of infrastructure, and program Download PDF

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Publication number
WO2018159397A1
WO2018159397A1 PCT/JP2018/006141 JP2018006141W WO2018159397A1 WO 2018159397 A1 WO2018159397 A1 WO 2018159397A1 JP 2018006141 W JP2018006141 W JP 2018006141W WO 2018159397 A1 WO2018159397 A1 WO 2018159397A1
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WO
WIPO (PCT)
Prior art keywords
road noise
information
vehicle
sound collection
sound
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PCT/JP2018/006141
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French (fr)
Japanese (ja)
Inventor
洋人 河内
洋一 奥山
昭光 藤吉
Original Assignee
パイオニア株式会社
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Publication date
Application filed by パイオニア株式会社 filed Critical パイオニア株式会社
Priority to JP2019502906A priority Critical patent/JP6789373B2/en
Publication of WO2018159397A1 publication Critical patent/WO2018159397A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R11/00—Arrangements for holding or mounting articles, not otherwise provided for
    • B60R11/02—Arrangements for holding or mounting articles, not otherwise provided for for radio sets, television sets, telephones, or the like; Arrangement of controls thereof
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C23/00—Auxiliary devices or arrangements for constructing, repairing, reconditioning, or taking-up road or like surfaces
    • E01C23/01—Devices or auxiliary means for setting-out or checking the configuration of new surfacing, e.g. templates, screed or reference line supports; Applications of apparatus for measuring, indicating, or recording the surface configuration of existing surfacing, e.g. profilographs
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D22/00—Methods or apparatus for repairing or strengthening existing bridges ; Methods or apparatus for dismantling bridges
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
    • G01H17/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves, not provided for in the preceding groups
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
    • G01H3/00—Measuring characteristics of vibrations by using a detector in a fluid

Definitions

  • the present invention relates to an in-vehicle device, an information processing device, an information collection method, an infrastructure deterioration determination method, and a program.
  • Patent Literature 1 discloses a technique for mapping a road surface damage state by transmitting a vibration measurement value in a vertical direction when a vehicle is traveling to a management device together with a measurement position.
  • Patent Document 2 discloses a technique for collecting and analyzing traveling sound as a technique for detecting an abnormality in a bridge expansion joint.
  • the present invention has been made in view of the above-described problems, and provides a technique that can accurately determine the degradation state of a road surface.
  • one object of the present invention is not to reduce the accuracy of a function that supports safe driving.
  • a sound collection unit that collects road noise when the vehicle is running;
  • a transmission unit that transmits the road noise to an external device in association with sound collection position information indicating a position where the sound collection unit has collected the road noise; It is an in-vehicle device provided with.
  • the invention according to claim 10 is:
  • the road noise collected by the in-vehicle device is associated with the sound collection position information indicating the sound collection position of the road noise and acquired from the in-vehicle device,
  • a determination unit that determines the deterioration state of the infrastructure at the position indicated by the sound collection position information by analyzing the road noise associated with the sound collection position information; Is an information processing apparatus.
  • the invention according to claim 21 An information collection method executed by a computer, A sound collection process for collecting road noise when the vehicle is running; A transmission step of transmitting the road noise to an external device in association with the sound collection position information indicating the sound collection position of the road noise; It is the information collection method which has.
  • the invention described in claim 22 A method for judging deterioration of infrastructure executed by a computer,
  • the road noise collected by the in-vehicle device is associated with the sound collection position information indicating the sound collection position of the road noise and acquired from the in-vehicle device, and
  • the invention according to claim 23 provides Sound collecting means for collecting road noise during traveling of the vehicle, and Transmission means for transmitting the road noise to an external device in association with the sound collection position information indicating the sound collection position of the road noise; It is a program to make it function as.
  • the invention according to claim 24 provides Computer
  • the road noise collected by the in-vehicle device is associated with the sound collection position information indicating the sound collection position of the road noise and is acquired from the in-vehicle device, and Judgment means for judging the deterioration state of the infrastructure at the position indicated by the sound collection position information by analyzing the road noise associated with the sound collection position information; It is a program to make it function as.
  • FIG. 1 It is a figure which illustrates the use environment of the vehicle-mounted apparatus concerning this invention. It is a figure which illustrates the system configuration of the information collection system in a 1st embodiment. It is a figure which illustrates the hardware constitutions of a vehicle-mounted apparatus. It is a figure which illustrates the hardware constitutions of information processing apparatus. It is a flowchart which illustrates the flow of a process of the vehicle-mounted apparatus of 1st Embodiment. It is a flowchart which illustrates the flow of processing of the information processor of a 1st embodiment. It is a figure which illustrates the system configuration
  • each block in the block diagram represents a functional unit configuration, not a hardware unit configuration.
  • FIG. 1 is a diagram illustrating a use environment of an in-vehicle device 200 according to the present invention.
  • FIG. 1 is a diagram for facilitating the understanding of the in-vehicle device 200, and does not limit the operation of the in-vehicle device 200.
  • the vehicle 500 is an arbitrary vehicle such as an automobile.
  • sound road noise
  • the road surface of the traveling path for example, an infrastructure such as a road.
  • the infrastructure deteriorates, the road surface state (such as unevenness) changes, and a change appears in road noise generated when the vehicle 500 travels. Therefore, road noise can be used as an index for determining the deterioration state of the infrastructure.
  • a sound collecting unit 202 for example, a microphone that picks up sound generated when the vehicle 500 is traveling (road noise generated when the vehicle 500 is traveling) is disposed on the outer periphery of the vehicle 500.
  • the sound collection unit 202 (microphone) and the in-vehicle device 200 are not limited to the example of FIG. 1, and may be separate devices connected by wire or wirelessly. In this case, only the sound collection unit 202 may be disposed outside the vehicle 500, and the in-vehicle device 200 may be disposed inside the vehicle.
  • an in-vehicle device 200 that collects road noise and an information processing device that determines the state of the infrastructure using the road noise collected by the in-vehicle device 200 will be described.
  • FIG. 2 is a diagram illustrating a system configuration of the information collection system 1 in the first embodiment. As shown in FIG. 2, it includes an in-vehicle device 200 and an information processing device 400. The in-vehicle device 200 and the information processing device 400 are connected to be communicable with each other via a network.
  • the in-vehicle device 200 includes a sound collection unit 202 and a transmission unit 204.
  • the sound collection unit 202 is a so-called microphone.
  • the sound collection unit 202 picks up sound (road noise) generated when the vehicle 500 travels, and converts vibrations from the sound into an electric signal to generate sound data.
  • the transmission unit 204 transmits the sound data generated by the sound collection unit 202 to an external apparatus in association with the position where the road noise is picked up (hereinafter also referred to as “sound collection position”).
  • the external apparatus is the information processing apparatus 400.
  • the sound picked up using the sound collection unit 202 may include sounds other than road noise.
  • Road noise includes, for example, a frequency band of 100 to 500 Hz. Therefore, it is preferable that the transmission unit 204 further includes a filter unit (not shown) that passes the sound picked up using the sound collection unit 202 through the frequency filter and extracts the sound in the frequency band of road noise. In this case, the transmission unit 204 transmits the sound data of the sound in the road noise frequency band extracted by the filter unit to the information processing apparatus 400.
  • the information processing apparatus 400 includes an acquisition unit 402 and a determination unit 404.
  • the acquisition unit 402 acquires road noise sound data collected by the in-vehicle device 200 in association with sound collection position information indicating the road noise collection position.
  • the determination unit 404 analyzes the deterioration state of the infrastructure (for example, a road) at the position indicated by the sound collection position information acquired by the acquisition unit 402, and analyzes the road noise sound data associated with the sound collection position information. Judging by doing. Details of the analysis processing by the determination unit 404 will be described later.
  • the road noise sound data collected by the in-vehicle device 200 is associated with the information indicating the road noise collection position, and the information processing apparatus performs analysis processing of the deterioration state of the infrastructure. 400. Then, the information processing apparatus 400 analyzes the deterioration state of the infrastructure using the road noise sound data acquired from the in-vehicle apparatus 200. Since the road noise sound data acquired from the in-vehicle device 200 is associated with information indicating the road noise collecting position, the analysis result (degradation state of the infrastructure) of the sound data is at which position. It is possible to specify whether it corresponds. That is, according to the information collection system of this embodiment, it is possible to grasp the deterioration state of the infrastructure in various places.
  • Each functional component of the in-vehicle device 200 may be realized by hardware (eg, a hard-wired electronic circuit) that implements each functional component, or a combination of hardware and software (eg, electronic A combination of a circuit and a program for controlling the circuit may be realized.
  • hardware eg, a hard-wired electronic circuit
  • software eg, electronic A combination of a circuit and a program for controlling the circuit may be realized.
  • FIG. 3 is a diagram illustrating a hardware configuration of the in-vehicle device 200.
  • the computer 100 is a computer that implements the in-vehicle device 200.
  • the computer 100 is an ECU (Electronic Control Unit) that controls various hardware provided in the vehicle 500.
  • the computer 100 may be a car navigation device provided in the vehicle 500.
  • the computer 100 may be a computer designed exclusively for realizing the in-vehicle device 200, or may be a general-purpose computer. When the computer 100 is designed exclusively, the computer 100 may be configured to be attached to the outer periphery of the vehicle, preferably the lower surface of the outer periphery of the vehicle.
  • the computer 100 includes a bus 102, a processor 104, a memory 106, a storage device 108, an input / output interface 110, and a network interface 112.
  • the bus 102 is a data transmission path through which the processor 104, the memory 106, the storage device 108, the input / output interface 110, and the network interface 112 transmit / receive data to / from each other.
  • the processor 104 is an arithmetic processing unit realized using a microprocessor, a CPU (Central Processing Unit), or a GPU (Graphics Processing Unit).
  • the memory 106 is a main storage device realized using a RAM (Random Access Memory) or the like.
  • the storage device 108 is an auxiliary storage device implemented using a ROM (Read Only Memory), a flash memory, or the like. However, the storage device 108 may be configured by hardware similar to the hardware configuring the main storage device such as RAM.
  • the input / output interface 110 is an interface for connecting the computer 100 to peripheral devices.
  • a microphone 1101 and a GPS module 1102 are connected to the input / output interface 110.
  • the microphone 1101 realizes at least a part of the functions of the sound collection unit 202 described above.
  • the GPS module 1102 generates vehicle position information.
  • the position information generated by the GPS module 1102 can be used as the above-described sound collection position information by making it correspond to the timing when the sound is picked up by the microphone 1101.
  • Various analog signals and digital signals used for controlling the vehicle 500 are input or output to the computer 100 via the input / output interface 110.
  • an audio signal output from the microphone 1101 is input to the computer 100 via the input / output interface 110.
  • the microphone 1101 may be connected via a network interface 112 that supports a wireless communication standard such as Bluetooth (registered trademark).
  • the input / output interface 110 appropriately includes an A / D converter that converts an analog input signal into a digital signal, a D / A converter that converts a digital output signal into an analog signal, and the like.
  • an A / D converter that converts an analog input signal into a digital signal
  • a D / A converter that converts a digital output signal into an analog signal
  • the input / output interface 110 may further include a filter circuit 1103 that extracts a frequency component of a predetermined band.
  • the filter circuit 1103 realizes the function of the filter unit described above.
  • the filter circuit 1103 is configured to be able to extract a road noise frequency band, for example, a band of 100 to 500 Hz, for example.
  • a low-pass filter that has a cutoff frequency near 1 kHz and extracts a frequency component of 1 kHz or less can be used.
  • the filter circuit 1103 may be a band-pass filter that includes 100 to 500 Hz in the pass band (eg, a band-pass filter that includes 50 Hz to 1 kHz in the pass band).
  • the filter circuit 1103 is not limited to the example given here, and the filter circuit 1103 may be configured to be able to extract a target frequency band sound.
  • the filter circuit 1103 can also be called a processing unit that processes road noise.
  • the network interface 112 is an interface for connecting the computer 100 to a communication network.
  • This communication network is, for example, a CAN (Controller Area Network) communication network or a WAN (Wide Area Network).
  • the method of connecting the network interface 112 to the communication network may be a wireless connection or a wired connection.
  • the storage device 108 stores a program module for realizing each functional component of the in-vehicle device 200.
  • the processor 104 implements the function of the in-vehicle device 200 by reading the program module into the memory 106 and executing it.
  • the hardware configuration of the computer 100 that implements the in-vehicle device 200 is not limited to the example of FIG.
  • the in-vehicle device 200 may be configured to be attachable to the outer periphery of the vehicle using an attachment member or the like. By attaching the in-vehicle device 200 including the microphone 1101 to the lower part of the vehicle, it becomes difficult for unrelated sounds from other surrounding vehicles to enter, and road noise can be picked up efficiently.
  • the in-vehicle device 200 may further include a support member configured such that when the in-vehicle device 200 is attached to the vehicle, the microphone 1101 is directed toward the road surface below the vehicle. Also with this configuration, road noise can be picked up efficiently.
  • Each functional component of the information processing apparatus 400 may be realized by hardware (for example, a hard-wired electronic circuit) that realizes each functional component, or a combination of hardware and software (for example: It may be realized by a combination of an electronic circuit and a program for controlling it).
  • hardware for example, a hard-wired electronic circuit
  • software for example: It may be realized by a combination of an electronic circuit and a program for controlling it.
  • FIG. 4 is a diagram illustrating a hardware configuration of the information processing apparatus 400.
  • the computer 300 is a computer that implements the information processing apparatus 400.
  • the computer 300 may be a computer designed exclusively for realizing the information processing apparatus 400 or a general-purpose computer.
  • the computer 300 includes a bus 302, a processor 304, a memory 306, a storage device 308, an input / output interface 310, and a network interface 312.
  • the bus 302 is a data transmission path through which the processor 304, the memory 306, the storage device 308, the input / output interface 310, and the network interface 312 transmit / receive data to / from each other.
  • the method for connecting the processors 304 and the like is not limited to bus connection.
  • the processor 304 is an arithmetic processing unit realized using a microprocessor, a CPU (Central Processing Unit), or a GPU (Graphics Processing Unit).
  • the memory 306 is a main storage device realized using a RAM (Random Access Memory) or the like.
  • the storage device 308 is an auxiliary storage device realized using a ROM (Read Only Memory), a flash memory, or the like.
  • the storage device 108 may be configured by hardware similar to the hardware configuring the main storage device such as RAM.
  • the input / output interface 310 is an interface for connecting the computer 300 to the peripheral device 35.
  • an input device 352 such as a keyboard and a mouse
  • a display device 354 such as an LCD (Liquid Crystal Display)
  • a touch panel in which the input device 352 and the display device 354 are integrated are connected to the input / output interface 310. ing.
  • the network interface 312 is an interface for connecting the computer 300 to a communication network.
  • This communication network is, for example, a WAN (Wide Area Network).
  • the method of connecting the network interface 312 to the communication network may be a wireless connection or a wired connection.
  • the storage device 308 stores a program module for realizing each functional component of the information processing apparatus 400.
  • the processor 304 reads out the program module to the memory 306 and executes it, thereby realizing the function of the information processing apparatus 400.
  • FIG. 5 is a flowchart illustrating the processing flow of the in-vehicle device 200 according to the first embodiment.
  • FIG. 6 is a flowchart illustrating the processing flow of the information processing apparatus 400 according to the first embodiment.
  • the sound collection unit 202 uses the microphone 1101 to pick up a sound (road noise) generated when the vehicle travels, and generates sound data (S102). Further, the sound collection unit 202 acquires position information from the GPS module 1102 and associates it with the sound data generated in S102 as sound collection position information indicating the position where the sound (road noise) is picked up (S104).
  • the sound collection unit 202 includes time information indicating the time when the sound (road noise) is picked up, environment information indicating the environment where the sound (road noise) is picked up (eg, weather, vehicle speed, etc.), or
  • the vehicle type information indicating the vehicle type of the vehicle on which the in-vehicle device 200 is mounted may be further acquired and associated with the sound data.
  • the sound collection unit 202 can acquire time information from, for example, a clock unit (not shown) provided in the computer 100 or the GPS module 1102.
  • the sound collection unit 202 can acquire weather information near the current position of the vehicle from a server device on the network via the network interface 112.
  • the sound collection unit 202 can acquire sensing information of sensors (for example, a raindrop sensor, an illuminance sensor, a humidity sensor, etc.) mounted on the vehicle via the network interface 112 as information related to the weather.
  • the sound collection unit 202 can acquire vehicle speed information and the like from an ECU connected via the network interface 112. Further, for example, by performing a pre-registration operation of the vehicle type information and storing the vehicle type information in the memory 106 or the like in advance, the sound collection unit 202 acquires the vehicle type information stored in the memory 106 or the like as necessary. be able to.
  • the sound collection unit 202 may temporarily store the sound data and information associated with the sound data in a storage area such as the storage device 108, or send the sound collection unit 202 to the transmission unit 204 for transmission to the information processing apparatus 400. You may pass.
  • the transmission unit 204 transmits the audio data generated in S102 to the information processing apparatus 400 together with the sound collection position information associated with the audio data (S106).
  • the transmission unit 204 can further associate the time information and the environment information with the voice information and transmit the information to the information processing apparatus 400.
  • destination information for example, an IP (Internet Protocol) address
  • the transmission unit 204 may execute the process of S106 at a predetermined timing, or may execute the process of S106 according to the timing when the sound collection unit 202 picks up road noise.
  • the voice data and each piece of information associated with the voice data are stored in the storage device 108 or the like, and the transmission unit 204 displays the voice data and each piece of information associated with the voice data in the storage device 108. Or the like and transmitted to the information processing apparatus 400.
  • the transmission unit 204 can delete information transmitted to the information processing apparatus 400 from the storage device 108 or the like. In the latter case, the sound data and information associated with the sound data are transferred from the sound collection unit 202 to the transmission unit 204.
  • the acquisition unit 402 acquires information (audio data and each piece of information associated with the audio data) transmitted from the in-vehicle device 200 (S202). Information acquired by the acquisition unit 402 is accumulated in the storage device 308 or the like and used for processing by the determination unit 404 described later.
  • the determination unit 404 reads out voice data stored in the storage device 308 or the like (hereinafter also referred to as “comparison target data”) in accordance with an execution instruction or the like by an operator of the information processing apparatus 400, and performs infrastructure deterioration determination processing. Execute (S204).
  • the determination unit 404 uses the analysis result (for example, frequency distribution) of the sound data accumulated in the storage device 308 or the like as road noise data (hereinafter referred to as “reference noise data”) as a reference when determining deterioration of the infrastructure. Compared with the above).
  • the reference noise data is, for example, road noise sample data when driving on a normal road surface.
  • the reference noise data may be road noise sound data that is collected at a point in time earlier than the road noise corresponding to the comparison target data, and the associated sound collection position information is common. Good.
  • the reference noise data is stored in advance in the memory 306 or the storage device 308, for example.
  • the determination unit 404 can determine the deterioration state of the infrastructure such as a road based on the degree of difference (road noise difference) obtained from the comparison result, for example. As an example, the determination unit 404 can determine whether or not the infrastructure has deteriorated by comparing a difference obtained from the comparison result with a threshold value as a determination criterion.
  • a threshold value serving as a determination criterion may be provided in a plurality of stages.
  • the determination unit 404 can determine the degradation state of the infrastructure at a stepwise level from the comparison result between the plurality of threshold values and the difference obtained from the comparison result.
  • the determination unit 404 may generate a difference obtained from the comparison result, or a numerical value obtained by converting the difference according to a specific reference, as a score serving as a determination index for the deterioration state.
  • the determination unit 404 may use road noise sound data at a plurality of past points as reference noise data.
  • the determination unit 404 includes sound data of road noise (first past road noise) collected before the first time before the road noise corresponding to the comparison target data, and the first Sound data of road noise (second past road noise) collected before the second time, which is a time before the time, can be used as the reference noise data.
  • the determination unit 404 compares the comparison target data with the reference noise data corresponding to the first past road noise, and also compares the comparison target data with the reference noise data corresponding to the second past road noise. By comparing these, the deterioration state of the infrastructure can be determined.
  • the determination unit 404 may use three or more past road noise sound data as the reference noise data. By doing in this way, the change of the road noise in a certain period can be compared with time passage, and the deterioration state of an infrastructure can be judged with higher accuracy.
  • the sound collection unit 202 acquires audio data associated with time information indicating the road noise collection time, and stores the audio data together with the time information in the storage device 308 or the like.
  • the determination unit 404 can classify the audio data stored in the storage device 308 or the like based on the time information associated with the audio data. For example, the determination unit 404 can classify the audio data stored in the storage device 308 or the like based on time information associated with the audio data, for example, by time zone. Then, the determination unit 404 can analyze road noise for each classification based on time information.
  • the sound collection environment (for example, whether there are other noise sources (oncoming cars, pedestrians, etc.), how much other noise sources exist, etc.) varies depending on the time of day, etc.
  • the characteristics of the sound collected by the sound collection unit 202 are also changed. If the configuration described here is adopted, road noise can be classified in more detail, and the deterioration state of the infrastructure can be determined with high accuracy.
  • the sound collection unit 202 obtains audio data associated with environmental information (such as weather at the time of sound collection and vehicle speed at the time of sound collection) when road noise is collected.
  • environmental information such as weather at the time of sound collection and vehicle speed at the time of sound collection
  • the determination unit 404 can classify the sound data stored in the storage device 308 or the like based on the environment information associated with the sound data. For example, the determination unit 404 can classify the sound data stored in the storage device 308 or the like according to the weather based on the environment information related to the weather associated with the sound data.
  • the determination unit 404 can classify the voice data stored in the storage device 308 or the like according to the speed of the vehicle based on the environmental information related to the speed of the vehicle associated with the voice data. And the judgment part 404 can analyze road noise for every classification
  • the characteristics of the sound collected by the sound collection unit 202 also change.
  • the characteristics of the sound collected by the sound collection unit 202 vary depending on the weather, such as when the weather is sunny, rain, or when the wind is strong / weak. Further, the characteristics of the sound collected by the sound collection unit 202 vary depending on the speed of the vehicle. If the configuration described here is adopted, road noise can be classified in more detail, and the deterioration state of the infrastructure can be determined with high accuracy.
  • the sound collection unit 202 acquires audio data associated with vehicle type information indicating the type of vehicle on which the in-vehicle device 200 is disposed, and the audio data is stored in the storage device 308 together with the vehicle type information.
  • the determination unit 404 can classify the voice data stored in the storage device 308 or the like based on the vehicle type information associated with the voice data. For example, the determination unit 404 can divide the audio data stored in the storage device 308 or the like into classifications such as vehicle type and vehicle weight based on the vehicle type information associated with the audio data. And the judgment part 404 can analyze road noise for every classification
  • the characteristics of the vehicle for example, the weight of the vehicle, the number of wheels, the wheel base, etc.
  • the characteristics of the vehicle change, and thereby the characteristics of the sound collected by the sound collection unit 202 also change. If the configuration described here is adopted, road noise can be classified in more detail, and the deterioration state of the infrastructure can be determined with high accuracy.
  • the sound collected by the sound collection unit 202 may include noise other than road noise. For example, when there is a puddle on the road surface or some object is falling, if the vehicle passes over it, noise due to them is generated and can be collected by the sound collection unit 202.
  • the determination unit 404 determines that the analysis result of the sound data in a specific time zone is the result of the sound data in another time zone (for example, the time zone immediately before the specific time zone). It may be configured to determine whether or not the analysis result is different.
  • the determination unit 404 determines that the specific data
  • the sound data in the time zone can be excluded from the elements that determine the deterioration state of the infrastructure. By doing this, it is possible to exclude sound data including obvious noise from the analysis target and determine the deterioration state of the infrastructure with high accuracy.
  • the determination unit 404 stores the analysis result of the deterioration state of the infrastructure by the process of S204 in a predetermined storage unit (for example, the storage device 308) (S206). By doing in this way, it becomes possible to feed back the analysis result of this time to the analysis after the next time.
  • a predetermined storage unit for example, the storage device 308
  • FIG. 7 is a diagram illustrating a system configuration of the information collection system 1 in the second embodiment. As shown in FIG. 7, it includes an in-vehicle device 200 and an information processing device 400. The in-vehicle device 200 and the information processing device 400 are connected to be communicable with each other via a network.
  • the in-vehicle device 200 of this embodiment further includes a designated position information acquisition unit 206 in addition to the configuration of the first embodiment.
  • the specified position information acquisition unit 206 acquires specified position information indicating a position specified by the information processing apparatus 400 (external device).
  • the transmission unit 204 of the present embodiment transmits road noise sound data picked up by the sound collection unit 202 at a position corresponding to the position indicated by the specified position information acquired by the specified position information acquisition unit 206 to the information processing apparatus 400. Configured to do. Specific operation of the transmission unit 204 will be described later.
  • the information processing apparatus 400 further includes a designated position information transmission unit 406.
  • the designated position information transmission unit 406 accepts a position designation input via, for example, the input device 352 connected to the input / output interface 310. Then, the designated position information transmission unit 406 transmits information indicating the input position (designated position information) to the in-vehicle device 200.
  • the designated position information transmission unit 406 is a processing unit that makes a pair with the above-described designated position information acquisition unit 206.
  • the in-vehicle device 200 of this embodiment has the same hardware configuration (example: FIG. 3) as that of the first embodiment.
  • the storage device 108 further stores a program module for realizing the function of the designated position information acquisition unit 206.
  • the processor 104 further realizes the function of the designated position information acquisition unit 206 by reading this program module into the memory 106 and executing it.
  • the information processing apparatus 400 of this embodiment has the same hardware configuration (for example, FIG. 4) as that of the first embodiment.
  • the storage device 308 further stores a program module for realizing the function of the designated position information transmission unit 406.
  • the processor 304 further realizes the function of the designated position information transmission unit 406 by reading this program module into the memory 306 and executing it.
  • FIG. 8 is a flowchart illustrating the processing flow of the information processing apparatus 400 according to the second embodiment.
  • 9 and 10 are flowcharts illustrating the flow of processing of the in-vehicle device 200 according to the second embodiment.
  • the designated position information transmission unit 406 accepts an input operation of designated position information via the input device 352 or the like (S302). For example, when the position coordinates (x, y) are input by the operation of the operator of the information processing apparatus 400, the specified position information transmission unit 406 generates specified position information indicating the position coordinates (x, y). A plurality of positions may be included in the designated position information. Further, the designated position information may be information indicating a range defined using position information of three points.
  • the designated position information transmission unit 406 may be configured to automatically generate the designated position information based on the history data of the analysis result by the determination unit 404.
  • the designated position information transmission unit 406 can read and use the analysis result stored in the storage device 308 or the like in the process of S206 in FIG.
  • the designated position information transmission unit 406 refers to the past analysis result of the storage device 308, and the analysis result (for example, the score serving as an index is equal to or greater than a predetermined threshold value)
  • the position where the level of the deterioration state is equal to or higher than a predetermined level is specified, and information indicating the position can be generated. Further, the designated position information transmission unit 406 may generate information indicating a predetermined range around the specified position.
  • the designated position information transmission unit 406 transmits the designated position information generated in the process of S302 to the in-vehicle device 200 (S304).
  • the designated position information transmission unit 406 may transmit the designated position information to a predetermined in-vehicle device 200, or may transmit the designated position information to the in-vehicle device 200 picked up at random.
  • the designated position information transmission unit 406 is based on the current position information of each vehicle obtained from the in-vehicle device 200, and is a vehicle that is located within a predetermined range from the designated position information or a vehicle that is directed to the position indicated by the designated position information.
  • the in-vehicle device 200 mounted on the device may be specified, and the designated position information may be transmitted to the in-vehicle device 200.
  • the designated position information may include information indicating a collection period (that is, an effective period of the designated position information).
  • the destination address of each in-vehicle device 200 is registered in advance in the storage device 308, for example.
  • the designated position information acquisition unit 206 acquires the designated position information transmitted from the designated position information transmission unit 406 (S402).
  • the specified position information acquisition unit 206 stores the acquired specified position information in the memory 106, the storage device 108, or the like.
  • the sound collection unit 202 acquires the current position information of the vehicle from the GPS module 1102, for example, at a predetermined interval (S404). Then, the sound collection unit 202 compares the designated position information acquired in the process of S402 and determines whether or not a predetermined standard is satisfied (S406). When the position indicated by the current position information of the vehicle satisfies a predetermined standard with respect to the position (or range) indicated by the specified position information (S406: YES), the sound collection unit 202 generates a sound collection operation (generates sound data) Then, the operation of associating at least the sound data and the sound collection position information) is started (S408).
  • the sound collection unit 202 can start the sound collection operation.
  • the distance between the position indicated by the current position information and the position (or range) indicated by the designated position information may be calculated as a simple straight line distance or as a distance on an actual route. Also good.
  • the sound collection unit 202 does not start the sound collection operation. Alternatively, the sound collecting operation is stopped (S410).
  • the sound collection unit 202 does not start the sound collection operation when the distance between the position indicated by the current position information and the position (or range) indicated by the designated position information is equal to or greater than a predetermined threshold. If the sound collection operation has already been performed at this time, the sound collection unit 202 stops the sound collection operation.
  • the transmission unit 204 can transmit the sound data generated during that time to the information processing apparatus 400 according to the timing when the sound collection unit 202 stops the sound collection operation after the sound collection unit 202 starts the sound collection operation. .
  • the sound collection unit 202 does not immediately transmit sound data generated between the start of the sound collection operation and the stop of the sound collection operation to the information processing apparatus 400, and the like. It may be temporarily stored in In this case, the transmission unit 204 may transmit the sound data stored in the storage device 108 in response to a sound data transmission request from the information processing apparatus 400 or a predetermined sound data transmission timing.
  • the designated position information acquisition unit 206 acquires the designated position information transmitted from the designated position information transmission unit 406 (S502).
  • the specified position information acquisition unit 206 stores the acquired specified position information in the memory 106, the storage device 108, or the like.
  • the sound collection unit 202 generates sound data by collecting sounds (road noise) generated during traveling, separately from the acquisition processing of the designated position information in S502 (S504). At this time, the sound collection unit 202 acquires the current position information of the vehicle from the GPS module 1102, for example, and associates it with the sound data generated in S504 (S506).
  • the current position information acquired in S506 can also be referred to as sound collection position information indicating a position where sound (road noise) is collected.
  • the sound data generated here may be temporarily stored in the storage device 108 or the like, or may be directly passed to the transmission unit 204. Hereinafter, a case where sound data is temporarily stored in the storage device 108 or the like will be described.
  • the sound data generated by the sound collection unit 202 is transmitted by the transmission unit 204.
  • the transmission unit 204 reads the designated position information stored in the memory 106 or the storage device 108 in the process of S502 (S508). Then, the transmission unit 204 specifies sound data associated with the sound collection position information corresponding to the designated position information read out in the process of S508 from the sound data stored in the storage device 108 or the like (S510). ).
  • the transmission unit 204 specifies sound data associated with current position information indicating a position where the distance from the position (or range) indicated by the specified position information is a predetermined value or less. Then, the transmission unit 204 transmits the sound data specified in the process of S510 to the information processing apparatus 400 (S512).
  • the information processing apparatus 400 can execute the process of determining the deterioration state of the infrastructure using the sound data transmitted in this way.
  • the sound data corresponding to the position designated by the information processing apparatus 400 is transmitted from the in-vehicle apparatus 200.
  • the position specified by the information processing apparatus 400 is determined based on, for example, an operator input or past analysis results. As a result, it is possible to selectively collect and analyze sound data at a position that the operator wants to confirm with priority or sound data at a position where the deterioration state has progressed to some extent from past analysis results. .
  • FIG. 11 is a diagram illustrating a system configuration of the information collection system 1 according to the third embodiment. As shown in FIG. 11, it includes an in-vehicle device 200 and an information processing device 400. The in-vehicle device 200 and the information processing device 400 are connected to be communicable with each other via a network.
  • the in-vehicle device 200 of this embodiment further includes a caution information acquisition unit 208 and a control unit 210 in addition to the configuration of the first embodiment.
  • the attention information acquisition unit 208 acquires the attention information transmitted from the information processing apparatus 400 (external device).
  • the attention information includes at least information related to the location of the infrastructure determined as “degraded” by the determination unit 404.
  • the control unit 210 controls the operation of various devices mounted on the vehicle 500 based on the attention information acquired by the attention information acquisition unit 208.
  • control unit 210 is illustrated so as to present a warning message to an occupant of the vehicle 500 on which the in-vehicle device 200 is mounted at a position specified using the attention information acquired by the attention information acquisition unit 208.
  • the determination unit 404 determines the infrastructure deterioration state based on road noise collected using the in-vehicle device 200.
  • the position of the infrastructure determined as “deteriorated” by the determination unit 404 can be said to be a position that requires attention during traveling, and in some cases, it is preferable to avoid traveling. That is, the position of the infrastructure determined as “deteriorated” by the determination unit 404 can be used as a reference for the position where the alert message for the passenger of the vehicle 500 on which the in-vehicle device 200 is mounted should be output. Therefore, the information processing apparatus 400 of this embodiment further includes a caution information transmission unit 408 in addition to the configuration of the first embodiment.
  • the attention information transmission unit 408 When the determination unit 404 determines that the level of the infrastructure deterioration state is equal to or higher than a predetermined level, the attention information transmission unit 408 generates attention information including information on the position (deterioration position) of the infrastructure. Then, the caution information transmission unit 408 transmits the generated caution information to the in-vehicle device 200.
  • the attention information transmission unit 408 is a processing unit that is paired with the above-described attention information acquisition unit 208.
  • the in-vehicle device 200 of this embodiment has the same hardware configuration (example: FIG. 3) as that of the first embodiment.
  • the storage device 108 further stores program modules for realizing the functions of the attention information acquisition unit 208 and the control unit 210.
  • the processor 104 further realizes the functions of the attention information acquisition unit 208 and the control unit 210 by reading the program module into the memory 106 and executing the program module.
  • the information processing apparatus 400 of this embodiment has the same hardware configuration (for example, FIG. 4) as that of the first embodiment.
  • the storage device 308 further stores a program module for realizing the function of the attention information transmission unit 408.
  • the processor 304 further realizes the function of the attention information transmission unit 408 by reading this program module into the memory 306 and executing it.
  • FIG. 12 is a flowchart illustrating the processing flow of the information processing apparatus 400 according to the third embodiment.
  • FIG. 13 is a flowchart illustrating the process flow of the in-vehicle device 200 according to the second embodiment.
  • the attention information transmission unit 408 determines whether or not the determination unit 404 determines that the level of the infrastructure deterioration state has deteriorated to a predetermined level or more (S606). When it is determined that the level of the infrastructure deterioration state is equal to or higher than the predetermined level (S606: YES), the attention information transmitting unit 408 displays the deterioration position information regarding the position of the infrastructure determined to be deteriorated to the predetermined level or higher. get.
  • the position of the infrastructure determined to be deteriorated to a predetermined level or more is the road noise collecting position analyzed by the determination unit 404 to determine the deterioration state of the infrastructure. Then, the caution information transmission unit 408 generates caution information using the acquired degradation position information.
  • the caution information transmission unit 408 generates caution information including the acquired deterioration position information and information indicating the caution message. For example, the caution information transmission unit 408 can select a caution message according to the determination result (degradation degree) of the infrastructure deterioration state by the determination unit 404.
  • the alert message is stored in the storage device 308 of the information processing apparatus 400, for example.
  • the caution information transmission unit 408 transmits the generated caution information to the in-vehicle device 200 (S608).
  • the determination unit 404 stores the analysis result of the infrastructure deterioration state in a predetermined storage unit.
  • the attention information is not transmitted and the process proceeds to S610, and the determination unit 404 receives the analysis result of the infrastructure degradation state as the predetermined level. Stored in the storage unit.
  • the attention information acquisition unit 208 determines whether the attention information transmitted from the attention information transmission unit 408 has been received (S702). When it is determined that the caution information has been received (S702: YES), the caution information acquisition unit 208 stores the degradation position information and the alert message included in the acquired caution information in the memory 106, the storage device 108, and the like ( S704).
  • the control unit 210 determines whether or not the position indicated by the caution information has been approached (S706). For example, the control unit 210 compares the current position information of the vehicle acquired from the GPS module 1102 with the deteriorated position information stored in the process of S704, and the vehicle approaches the position of the infrastructure deteriorated to a predetermined level or more. Can be determined. Specifically, the control unit 210 determines that the position indicated by the current position information of the vehicle is a predetermined reference (for example, “the difference between the two is equal to or less than a predetermined threshold”). It is possible to determine the approach to the position indicated by the degraded position information.
  • a predetermined reference for example, “the difference between the two is equal to or less than a predetermined threshold”. It is possible to determine the approach to the position indicated by the degraded position information.
  • the control unit 210 When it is determined that the vehicle has approached the position of the deteriorated infrastructure (S706: YES), the control unit 210 presents the alert message stored in the process of S704 (S708).
  • the alert message has a content such as “Please pay attention to the road surface ahead” and is presented in the form of a display or sound.
  • the information processing apparatus 400 may transmit caution information that does not include a caution message.
  • the in-vehicle device 200 that has received the caution information presents a warning message or a warning sound that is set in advance on the in-vehicle device 200 side when the vehicle approaches an infrastructure position that has deteriorated to a predetermined level or more.
  • the alert message and warning sound are stored in advance in the storage device 108 of the in-vehicle apparatus 200, for example.
  • the information processing apparatus 400 includes attention information including identification information for identifying the warning message or warning sound in addition to the deterioration position information. May be generated and transmitted to the in-vehicle device 200.
  • the control unit 210 can identify the alert message or warning sound to be output based on the identification information included in the alert information transmitted from the information processing apparatus 400.
  • control unit 210 may perform other processing that contributes to safety while the vehicle is running, instead of presenting the alert message when the alert information is received.
  • the control unit 210 may detect when the autonomous driving vehicle approaches the position of a deteriorated infrastructure.
  • the self-driving vehicle may be automatically steered so as to pass while avoiding the position of the deteriorated infrastructure. For example, when the vehicle is traveling automatically and the position of the deteriorated infrastructure is one lane of the two-lane road on one side, the control unit 210 may pass the lane on which the deteriorated infrastructure does not exist. To control the autonomous driving vehicle.
  • control unit 210 causes the automatic driving control device of the automatic driving vehicle to set the position of the deteriorated infrastructure based on the deterioration position information included in the acquired attention information as a travel avoidance point.
  • the automatic driving control device calculates a traveling track that avoids the traveling avoidance point, and controls the steering of the autonomous driving vehicle.
  • the automatic driving control device may pass the traveling avoidance point by reducing the traveling speed of the automatic driving vehicle when the traveling track avoiding the traveling avoidance point is not found.
  • the control unit 210 performs deterioration based on deterioration position information included in the acquired attention information when searching the navigation device for a route to the destination. It may be controlled to search for a route detouring the position of the infrastructure and present it on a display unit (not shown) as a recommended route.
  • the vehicle-mounted apparatus 200 can perform the various processes which contribute to the safety
  • the information processing apparatus 400 transmits the caution information to the in-vehicle apparatus 200 illustrated in the figure when the information processing apparatus 400 determines that the level of the infrastructure deterioration state is equal to or higher than the predetermined level.
  • the destination of the attention information transmitted by the information processing apparatus 400 is not limited to the in-vehicle apparatus 200 illustrated in the figure.
  • the information processing apparatus 400 does not have a function of collecting road noise and transmitting it to the information processing apparatus 400, and transmits attention information to an in-vehicle apparatus including the attention information acquisition unit 208 and the control unit 210. Also good.
  • the information processing apparatus 400 may transmit the caution information to the infrastructure maintenance vehicle equipped with the in-vehicle device including the caution information acquisition unit 208.
  • the attention information including information on the position of the infrastructure is included.
  • the vehicle-mounted device that has received the caution information presents information for alerting the vehicle occupant when the vehicle approaches the position of the deteriorated infrastructure. This makes it possible to call attention in advance to a vehicle approaching the position of the deteriorated infrastructure.
  • a part or all of the above embodiment is not particularly limited, but can be described as, for example, the following supplementary notes.
  • a sound collection unit that picks up sounds generated when the vehicle is running;
  • a filter unit that extracts a sound in a predetermined frequency band by passing the sound picked up using the sound collecting unit through a frequency filter;
  • a transmission unit that associates the sound of the predetermined frequency band with sound collection position information indicating a position where the sound is picked up, and transmits the sound to an external device;
  • a vehicle-mounted device comprising: 2.
  • the predetermined frequency band is a band of 1 kHz or less, 1.
  • the sound collection unit When the on-vehicle device is attached to the vehicle, the sound collection unit further includes a support member configured to face a road surface below the vehicle. 1. Or 2. The in-vehicle device described in 1. 4). The in-vehicle device can be attached to the lower surface of the outer periphery of the vehicle. 1. ⁇ 3. The in-vehicle device according to any one of the above. 5).
  • An information collection method executed by a computer A sound collection process for picking up sounds generated when the vehicle is running; A step of extracting a sound of a predetermined frequency band by passing the sound picked up in the sound collecting step through a frequency filter; A transmission step of transmitting the sound of the predetermined frequency band to an external device; A method for collecting information. 6).
  • Computer A sound collection unit that picks up sound generated when the vehicle is running, A filter unit for extracting a sound in a predetermined frequency band by passing the sound picked up by the sound collecting unit through a frequency filter; and A transmission unit for transmitting sound of the predetermined frequency band to an external device; Program to function as.

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Abstract

An information gathering system (1) is provided with: an in-vehicle device (200) that is disposed in a vehicle; and an information processing device (400) communicably connected to the in-vehicle device (200). The in-vehicle device (200) is provided with: a sound collecting unit (202) that collects road noise that is generated when the vehicle is travelling; and an information processing device (400) that transmits the road noise to the information processing device (400) by associating the road noise with sound-collected location information indicating the location where the road noise was collected. The information processing device (400) is provided with: an acquisition unit (402) that acquires, from the in-vehicle device, the road noise collected by the in-vehicle device (200), said road noise being acquired in association with the sound-collected location information indicating the location where the road noise was collected; and a determining unit (404) that determines the deterioration state of an infrastructure at the location indicated by the sound-collected location information, said deterioration state being determined by analyzing the road noise associated with the sound-collected location information.

Description

車載装置、情報処理装置、情報収集方法、インフラストラクチャーの劣化判断方法、及びプログラムIn-vehicle device, information processing device, information collection method, infrastructure deterioration determination method, and program
　本発明は、車載装置、情報処理装置、情報収集方法、インフラストラクチャーの劣化判断方法、及びプログラムに関する。 The present invention relates to an in-vehicle device, an information processing device, an information collection method, an infrastructure deterioration determination method, and a program.
　自動車でなどの車両が走行中に収集可能な情報を活用する技術が開発されている。例えば特許文献１には、車両の走行時の鉛直方向の振動測定値を、測定位置と共に管理装置に発信することで、路面の損傷状況をマッピングする技術が開示されている。また、下記特許文献２では、橋梁用伸縮継手の異常を検知するための技術として、走行音を収集および解析する技術が開示されている。 Technology that utilizes information that can be collected while a vehicle such as an automobile is running has been developed. For example, Patent Literature 1 discloses a technique for mapping a road surface damage state by transmitting a vibration measurement value in a vertical direction when a vehicle is traveling to a management device together with a measurement position. Patent Document 2 below discloses a technique for collecting and analyzing traveling sound as a technique for detecting an abnormality in a bridge expansion joint.
特開２０１６－０９５１８４号公報JP 2016-095184 A 特開２０１１－２４２２９４号公報JP 2011-242294 A
　特許文献１の技術では、鉛直方向の振動測定値を用いているが、鉛直方向の振動は、路面そのものの状態のみならず、路上の障害物などによっても検出され得る。そのため、路上の障害物などによる振動（ノイズ）によって、路面の損傷状況の判別精度が下がる可能性がある。なお、路面の損傷状況の判別精度が下がると、例えば、路面損傷の判別に基づいて車両に対し安全な運転を支援したとしても実際は誤った支援になってしまうという虞がある。 In the technique of Patent Document 1, a vertical vibration measurement value is used, but the vertical vibration can be detected not only by the state of the road surface itself but also by an obstacle on the road. Therefore, there is a possibility that the determination accuracy of the road surface damage state may be lowered by vibration (noise) due to an obstacle on the road. Note that if the accuracy of determining the road surface damage state decreases, for example, even if safe driving is supported for a vehicle based on the determination of road surface damage, there is a risk that the actual assistance will be erroneous.
　本発明は、上述の課題鑑みてなされたものであり、路面の劣化状況を精度よく判別可能とする技術を提供し、例えば、安全な運転を支援する機能の精度を低下させないことを一つの目的とする。 The present invention has been made in view of the above-described problems, and provides a technique that can accurately determine the degradation state of a road surface. For example, one object of the present invention is not to reduce the accuracy of a function that supports safe driving. And
　請求項１に記載の発明は、
　車両の走行時のロードノイズを集音する集音部と、
　前記集音部が前記ロードノイズを集音した位置を示す集音位置情報と対応付けて、前記ロードノイズを外部装置に送信する送信部と、
　を備える車載装置である。 The invention described in claim 1
A sound collection unit that collects road noise when the vehicle is running;
A transmission unit that transmits the road noise to an external device in association with sound collection position information indicating a position where the sound collection unit has collected the road noise;
It is an in-vehicle device provided with.
　請求項１０に記載の発明は、
　車載装置によって集音されたロードノイズを、当該ロードノイズの集音位置を示す集音位置情報と対応付けて、前記車載装置から取得する取得部と、
　前記集音位置情報によって示される位置のインフラストラクチャーの劣化状態を、当該集音位置情報と対応付けられている前記ロードノイズを解析することによって判断する判断部と、
　を備える情報処理装置である。 The invention according to claim 10 is:
The road noise collected by the in-vehicle device is associated with the sound collection position information indicating the sound collection position of the road noise and acquired from the in-vehicle device,
A determination unit that determines the deterioration state of the infrastructure at the position indicated by the sound collection position information by analyzing the road noise associated with the sound collection position information;
Is an information processing apparatus.
　請求項２１に記載の発明は、
　コンピュータによって実行される情報収集方法であって、
　車両の走行時のロードノイズを集音する集音工程と、
　前記ロードノイズの集音位置を示す集音位置情報と対応付けて、前記ロードノイズを外部装置に送信する送信工程と、
　を有する情報収集方法である。 The invention according to claim 21
An information collection method executed by a computer,
A sound collection process for collecting road noise when the vehicle is running;
A transmission step of transmitting the road noise to an external device in association with the sound collection position information indicating the sound collection position of the road noise;
It is the information collection method which has.
　請求項２２に記載の発明は、
　コンピュータによって実行されるインフラストラクチャーの劣化判断方法であって、
　車載装置によって集音されたロードノイズを、当該ロードノイズの集音位置を示す集音位置情報と対応付けて、前記車載装置から取得する取得工程と、
　前記集音位置情報によって示される位置のインフラストラクチャーの劣化状態を、当該集音位置情報と対応付けられている前記ロードノイズを解析することによって判断する判断工程と、
　を有するインフラストラクチャーの劣化判断方法である。 The invention described in claim 22
A method for judging deterioration of infrastructure executed by a computer,
The road noise collected by the in-vehicle device is associated with the sound collection position information indicating the sound collection position of the road noise and acquired from the in-vehicle device, and
A determination step of determining the deterioration state of the infrastructure at the position indicated by the sound collection position information by analyzing the road noise associated with the sound collection position information;
It is a method for judging deterioration of an infrastructure having
　請求項２３に記載の発明は、
　　車両の走行時のロードノイズを集音する集音手段、及び、
　前記ロードノイズの集音位置を示す集音位置情報と対応付けて、前記ロードノイズを外部装置に送信する送信手段、
　として機能させるためのプログラムである。 The invention according to claim 23 provides
Sound collecting means for collecting road noise during traveling of the vehicle, and
Transmission means for transmitting the road noise to an external device in association with the sound collection position information indicating the sound collection position of the road noise;
It is a program to make it function as.
　請求項２４に記載の発明は、
　　コンピュータを、
　車載装置によって集音されたロードノイズを、当該ロードノイズの集音位置を示す集音位置情報と対応付けて、前記車載装置から取得する取得手段、及び、
　前記集音位置情報によって示される位置のインフラストラクチャーの劣化状態を、当該集音位置情報と対応付けられている前記ロードノイズを解析することによって判断する判断手段、
　として機能させるためのプログラムである。 The invention according to claim 24 provides
Computer
The road noise collected by the in-vehicle device is associated with the sound collection position information indicating the sound collection position of the road noise and is acquired from the in-vehicle device, and
Judgment means for judging the deterioration state of the infrastructure at the position indicated by the sound collection position information by analyzing the road noise associated with the sound collection position information;
It is a program to make it function as.
　上述した目的、およびその他の目的、特徴および利点は、以下に述べる好適な実施の形態、およびそれに付随する以下の図面によってさらに明らかになる。 The above-described object and other objects, features, and advantages will be further clarified by a preferred embodiment described below and the following drawings attached thereto.
本発明にかかる車載装置の使用環境を例示する図である。It is a figure which illustrates the use environment of the vehicle-mounted apparatus concerning this invention. 第１実施形態における情報収集システムのシステム構成を例示する図である。It is a figure which illustrates the system configuration of the information collection system in a 1st embodiment. 車載装置のハードウエア構成を例示する図である。It is a figure which illustrates the hardware constitutions of a vehicle-mounted apparatus. 情報処理装置のハードウエア構成を例示する図である。It is a figure which illustrates the hardware constitutions of information processing apparatus. 第１実施形態の車載装置の処理の流れを例示するフローチャートである。It is a flowchart which illustrates the flow of a process of the vehicle-mounted apparatus of 1st Embodiment. 第１実施形態の情報処理装置の処理の流れを例示するフローチャートである。It is a flowchart which illustrates the flow of processing of the information processor of a 1st embodiment. 第２実施形態における情報収集システムのシステム構成を例示する図である。It is a figure which illustrates the system configuration | structure of the information collection system in 2nd Embodiment. 第２実施形態の情報処理装置の処理の流れを例示するフローチャートである。It is a flowchart which illustrates the flow of processing of the information processor of a 2nd embodiment. 第２実施形態の車載装置の処理の流れを例示するフローチャートである。It is a flowchart which illustrates the flow of a process of the vehicle-mounted apparatus of 2nd Embodiment. 第２実施形態の車載装置の処理の流れを例示するフローチャートである。It is a flowchart which illustrates the flow of a process of the vehicle-mounted apparatus of 2nd Embodiment. 第３実施形態における情報収集システムのシステム構成を例示する図である。It is a figure which illustrates the system configuration | structure of the information collection system in 3rd Embodiment. 第３実施形態の情報処理装置の処理の流れを例示するフローチャートである。14 is a flowchart illustrating an example of a processing flow of the information processing apparatus according to the third embodiment. 第３実施形態の車載装置の処理の流れを例示するフローチャートである。It is a flowchart which illustrates the flow of processing of the vehicle-mounted apparatus of 3rd Embodiment.
　以下、本発明の実施の形態について、図面を用いて説明する。尚、すべての図面において、同様な構成要素には同様の符号を付し、適宜説明を省略する。また、特に説明する場合を除き、ブロック図における各ブロックは、ハードウエア単位の構成ではなく、機能単位の構成を表している。 Hereinafter, embodiments of the present invention will be described with reference to the drawings. In all the drawings, the same reference numerals are given to the same components, and the description will be omitted as appropriate. Further, unless otherwise specified, each block in the block diagram represents a functional unit configuration, not a hardware unit configuration.
　［概要説明］
　図１は、本発明にかかる車載装置２００の使用環境を例示する図である。なお、図１は車載装置２００に関する理解を容易にするための図であり、車載装置２００の動作を何ら限定するものではない。 [Overview]
FIG. 1 is a diagram illustrating a use environment of an in-vehicle device 200 according to the present invention. FIG. 1 is a diagram for facilitating the understanding of the in-vehicle device 200, and does not limit the operation of the in-vehicle device 200.
　車両５００は、自動車などの任意の車両である。車両５００が走行しているとき、車両５００の車輪と走行路（例えば、道路などのインフラストラクチャー）の路面との接触によって、音（ロードノイズ）が発生する。インフラストラクチャーが劣化してくると、路面の状態（凹凸など）が変化し、車両５００が走行するときに発生するロードノイズに変化が現れてくる。そのため、ロードノイズは、インフラストラクチャーの劣化状態を判断する指標として利用することができる。 The vehicle 500 is an arbitrary vehicle such as an automobile. When the vehicle 500 is traveling, sound (road noise) is generated due to contact between the wheels of the vehicle 500 and the road surface of the traveling path (for example, an infrastructure such as a road). When the infrastructure deteriorates, the road surface state (such as unevenness) changes, and a change appears in road noise generated when the vehicle 500 travels. Therefore, road noise can be used as an index for determining the deterioration state of the infrastructure.
　そこで、図１に示すように、車両５００の外周部には、車両５００の走行時に発生する音（車両５００が走行しているときに生じるロードノイズ）を拾う集音部２０２（例えば、マイクロフォン）を有する車載装置２００が設けられている。なお、図１の例に限らず、集音部２０２（マイクロフォン）と車載装置２００が、有線または無線により接続される別々の装置であってもよい。この場合において、集音部２０２のみが車両５００の外部に配置され、車載装置２００は車両の内側に配置されていてもよい。 Therefore, as shown in FIG. 1, a sound collecting unit 202 (for example, a microphone) that picks up sound generated when the vehicle 500 is traveling (road noise generated when the vehicle 500 is traveling) is disposed on the outer periphery of the vehicle 500. A vehicle-mounted device 200 having the above is provided. The sound collection unit 202 (microphone) and the in-vehicle device 200 are not limited to the example of FIG. 1, and may be separate devices connected by wire or wirelessly. In this case, only the sound collection unit 202 may be disposed outside the vehicle 500, and the in-vehicle device 200 may be disposed inside the vehicle.
　以下の実施形態では、ロードノイズを収集する車載装置２００と、車載装置２００により収集されたロードノイズを用いてインフラストラクチャーの状態を判定する情報処理装置について説明する。 In the following embodiment, an in-vehicle device 200 that collects road noise and an information processing device that determines the state of the infrastructure using the road noise collected by the in-vehicle device 200 will be described.
　［第１実施形態］
　〔システム構成〕
　図２は、第１実施形態における情報収集システム１のシステム構成を例示する図である。図２に示されるように、車載装置２００と情報処理装置４００とを含んで構成される。車載装置２００と情報処理装置４００は、ネットワークを介して互いに通信可能に接続されている。 [First Embodiment]
〔System configuration〕
FIG. 2 is a diagram illustrating a system configuration of the information collection system 1 in the first embodiment. As shown in FIG. 2, it includes an in-vehicle device 200 and an information processing device 400. The in-vehicle device 200 and the information processing device 400 are connected to be communicable with each other via a network.
　＜車載装置２００の機能構成＞
　図２に示されるように、車載装置２００は、集音部２０２と送信部２０４とを備える。集音部２０２は、所謂マイクロフォンである。集音部２０２は、車両５００の走行時に発生する音（ロードノイズ）を拾って、その音による振動を電気信号に変換して音データを生成する。送信部２０４は、集音部２０２によって生成された音データを、そのロードノイズを拾った位置（以下、「集音位置」とも表記）と対応付けて、外部装置に送信する。なお、本実施形態では外部装置は情報処理装置４００である。 <Functional configuration of in-vehicle device 200>
As shown in FIG. 2, the in-vehicle device 200 includes a sound collection unit 202 and a transmission unit 204. The sound collection unit 202 is a so-called microphone. The sound collection unit 202 picks up sound (road noise) generated when the vehicle 500 travels, and converts vibrations from the sound into an electric signal to generate sound data. The transmission unit 204 transmits the sound data generated by the sound collection unit 202 to an external apparatus in association with the position where the road noise is picked up (hereinafter also referred to as “sound collection position”). In the present embodiment, the external apparatus is the information processing apparatus 400.
　ここで、集音部２０２を用いて拾った音の中には、ロードノイズ以外の音が含まれ得る。ロードノイズは、例えば１００～５００Ｈｚの帯域の周波数を含む。そのため、送信部２０４は、集音部２０２を用いて拾った音を周波数フィルタに通して、ロードノイズの周波数帯域の音を抽出するフィルタ部（図示せず）を更に備えていると好ましい。この場合には、送信部２０４は、フィルタ部により抽出された、ロードノイズの周波数帯域の音の音データを情報処理装置４００に送信する。 Here, the sound picked up using the sound collection unit 202 may include sounds other than road noise. Road noise includes, for example, a frequency band of 100 to 500 Hz. Therefore, it is preferable that the transmission unit 204 further includes a filter unit (not shown) that passes the sound picked up using the sound collection unit 202 through the frequency filter and extracts the sound in the frequency band of road noise. In this case, the transmission unit 204 transmits the sound data of the sound in the road noise frequency band extracted by the filter unit to the information processing apparatus 400.
　＜情報処理装置４００の機能構成＞
　図２に示されるように、情報処理装置４００は、取得部４０２と判断部４０４とを備える。取得部４０２は、車載装置２００によって集音されたロードノイズの音データを、当該ロードノイズの集音位置を示す集音位置情報と対応付けて取得する。判断部４０４は、取得部４０２により取得された集音位置情報によって示される位置のインフラストラクチャー（例えば道路）の劣化状態を、当該集音位置情報に対応付けられているロードノイズの音データを解析することによって判断する。判断部４０４による解析処理の詳細については、後述する。 <Functional Configuration of Information Processing Device 400>
As illustrated in FIG. 2, the information processing apparatus 400 includes an acquisition unit 402 and a determination unit 404. The acquisition unit 402 acquires road noise sound data collected by the in-vehicle device 200 in association with sound collection position information indicating the road noise collection position. The determination unit 404 analyzes the deterioration state of the infrastructure (for example, a road) at the position indicated by the sound collection position information acquired by the acquisition unit 402, and analyzes the road noise sound data associated with the sound collection position information. Judging by doing. Details of the analysis processing by the determination unit 404 will be described later.
　以上、本実施形態では、車載装置２００によって集音されたロードノイズの音データが、そのロードノイズの集音位置を示す情報と対応付けて、インフラストラクチャーの劣化状態の解析処理を行う情報処理装置４００に送信される。そして、情報処理装置４００によって、車載装置２００から取得したロードノイズの音データを用いてインフラストラクチャーの劣化状態が解析される。車載装置２００から取得されるロードノイズの音データには、そのロードノイズの集音位置を示す情報が対応付けられているため、その音データの解析結果（インフラストラクチャーの劣化状態）がどの位置に対応するものであるかを特定することができる。つまり、本実施形態の情報収集システムによれば、様々な場所におけるインフラストラクチャーの劣化状態を把握することができる。 As described above, in the present embodiment, the road noise sound data collected by the in-vehicle device 200 is associated with the information indicating the road noise collection position, and the information processing apparatus performs analysis processing of the deterioration state of the infrastructure. 400. Then, the information processing apparatus 400 analyzes the deterioration state of the infrastructure using the road noise sound data acquired from the in-vehicle apparatus 200. Since the road noise sound data acquired from the in-vehicle device 200 is associated with information indicating the road noise collecting position, the analysis result (degradation state of the infrastructure) of the sound data is at which position. It is possible to specify whether it corresponds. That is, according to the information collection system of this embodiment, it is possible to grasp the deterioration state of the infrastructure in various places.
　以下、第１実施形態をより詳細に説明する。 Hereinafter, the first embodiment will be described in more detail.
　〔車載装置２００のハードウエア構成〕
　車載装置２００の各機能構成部は、各機能構成部を実現するハードウエア（例：ハードワイヤードされた電子回路など）で実現されてもよいし、ハードウエアとソフトウエアとの組み合わせ（例：電子回路とそれを制御するプログラムの組み合わせなど）で実現されてもよい。以下、車載装置２００の各機能構成部がハードウエアとソフトウエアとの組み合わせで実現される場合について、さらに説明する。 [Hardware configuration of in-vehicle device 200]
Each functional component of the in-vehicle device 200 may be realized by hardware (eg, a hard-wired electronic circuit) that implements each functional component, or a combination of hardware and software (eg, electronic A combination of a circuit and a program for controlling the circuit may be realized. Hereinafter, the case where each function structure part of the vehicle-mounted apparatus 200 is implement | achieved by the combination of a hardware and software is further demonstrated.
　図３は、車載装置２００のハードウエア構成を例示する図である。計算機１００は、車載装置２００を実現する計算機である。例えば計算機１００は、車両５００に設けられている種々のハードウエアを制御する ECU（Electronic Control Unit）である。また、例えば、計算機１００は、車両５００に設けられているカーナビゲーション装置であってもよい。また、計算機１００は、車載装置２００を実現するために専用に設計された計算機であってもよいし、汎用の計算機であってもよい。計算機１００が専用に設計されたものである場合、計算機１００は車両の外周部、好ましくは、車両の外周部の下面に取り付けられるように構成されていてもよい。 FIG. 3 is a diagram illustrating a hardware configuration of the in-vehicle device 200. The computer 100 is a computer that implements the in-vehicle device 200. For example, the computer 100 is an ECU (Electronic Control Unit) that controls various hardware provided in the vehicle 500. For example, the computer 100 may be a car navigation device provided in the vehicle 500. The computer 100 may be a computer designed exclusively for realizing the in-vehicle device 200, or may be a general-purpose computer. When the computer 100 is designed exclusively, the computer 100 may be configured to be attached to the outer periphery of the vehicle, preferably the lower surface of the outer periphery of the vehicle.
　計算機１００は、バス１０２、プロセッサ１０４、メモリ１０６、ストレージデバイス１０８、入出力インタフェース１１０、及びネットワークインタフェース１１２を有する。バス１０２は、プロセッサ１０４、メモリ１０６、ストレージデバイス１０８、入出力インタフェース１１０、及びネットワークインタフェース１１２が、相互にデータを送受信するためのデータ伝送路である。ただし、プロセッサ１０４などを互いに接続する方法は、バス接続に限定されない。プロセッサ１０４は、マイクロプロセッサ、ＣＰＵ（Central Processing Unit）、又はＧＰＵ（Graphics Processing Unit）などを用いて実現される演算処理装置である。メモリ１０６は、ＲＡＭ（Random Access Memory）などを用いて実現される主記憶装置である。ストレージデバイス１０８は、ＲＯＭ（Read Only Memory）やフラッシュメモリなどを用いて実現される補助記憶装置である。ただし、ストレージデバイス１０８は、ＲＡＭなど、主記憶装置を構成するハードウエアと同様のハードウエアで構成されてもよい。 The computer 100 includes a bus 102, a processor 104, a memory 106, a storage device 108, an input / output interface 110, and a network interface 112. The bus 102 is a data transmission path through which the processor 104, the memory 106, the storage device 108, the input / output interface 110, and the network interface 112 transmit / receive data to / from each other. However, the method of connecting the processors 104 and the like is not limited to bus connection. The processor 104 is an arithmetic processing unit realized using a microprocessor, a CPU (Central Processing Unit), or a GPU (Graphics Processing Unit). The memory 106 is a main storage device realized using a RAM (Random Access Memory) or the like. The storage device 108 is an auxiliary storage device implemented using a ROM (Read Only Memory), a flash memory, or the like. However, the storage device 108 may be configured by hardware similar to the hardware configuring the main storage device such as RAM.
　入出力インタフェース１１０は、計算機１００を周辺機器と接続するためのインタフェースである。図３において、入出力インタフェース１１０には、マイク１１０１やＧＰＳモジュール１１０２が接続されている。マイク１１０１は、上述の集音部２０２の少なくとも一部の機能を実現する。ＧＰＳモジュール１１０２は、車両の位置情報を生成する。ＧＰＳモジュール１１０２により生成される位置情報は、マイク１１０１で音を拾ったタイミングに対応させることで、上述の集音位置情報として利用することができる。 The input / output interface 110 is an interface for connecting the computer 100 to peripheral devices. In FIG. 3, a microphone 1101 and a GPS module 1102 are connected to the input / output interface 110. The microphone 1101 realizes at least a part of the functions of the sound collection unit 202 described above. The GPS module 1102 generates vehicle position information. The position information generated by the GPS module 1102 can be used as the above-described sound collection position information by making it correspond to the timing when the sound is picked up by the microphone 1101.
　計算機１００には、入出力インタフェース１１０を介し、車両５００の制御に用いる各種のアナログ信号やデジタル信号が入力又は出力される。例えば、マイク１１０１から出力される音声信号は、入出力インタフェース１１０を介して、計算機１００へ入力される。なお、マイク１１０１は、Ｂｌｕｅｔｏｏｔｈ（登録商標）などの無線通信規格をサポートするネットワークインタフェース１１２を介して接続されていてもよい。 Various analog signals and digital signals used for controlling the vehicle 500 are input or output to the computer 100 via the input / output interface 110. For example, an audio signal output from the microphone 1101 is input to the computer 100 via the input / output interface 110. Note that the microphone 1101 may be connected via a network interface 112 that supports a wireless communication standard such as Bluetooth (registered trademark).
　入出力インタフェース１１０には、アナログの入力信号をデジタル信号に変換するＡ／Ｄコンバータや、デジタルの出力信号をアナログ信号に変換するＤ／Ａコンバータなどが適宜含まれる。例えばマイク１１０１から出力される音声信号がアナログ信号である場合、入出力インタフェース１１０が有するＡ／Ｄコンバータによってこのアナログ信号がデジタル信号に変換され、このデジタル信号がプロセッサ１０４によって処理される。 The input / output interface 110 appropriately includes an A / D converter that converts an analog input signal into a digital signal, a D / A converter that converts a digital output signal into an analog signal, and the like. For example, when the audio signal output from the microphone 1101 is an analog signal, the analog signal is converted into a digital signal by the A / D converter included in the input / output interface 110, and the digital signal is processed by the processor 104.
　入出力インタフェース１１０は、所定の帯域の周波数成分を抽出するフィルタ回路１１０３を更に備えていてもよい。フィルタ回路１１０３は、上述のフィルタ部の機能を実現する。フィルタ回路１１０３は、ロードノイズの周波数帯域、特に限定されないが、例えば１００～５００Ｈｚの帯域などを抽出可能に構成される。この周波数帯域を抽出する場合、例えば、フィルタ回路１１０３としては、１ｋＨｚ付近にカットオフ周波数を有し、１ｋＨｚ以下の周波数成分を抽出するローパスフィルタが利用できる。また、フィルタ回路１１０３は、１００～５００Ｈｚを通過帯域に含むバンドパスフィルタ（例：５０Ｈｚ～１ｋＨｚを通過帯域に含むバンドパスフィルタ）であってもよい。またここで挙げた例に限らず、フィルタ回路１１０３は、ターゲットとする周波数帯域の音を抽出可能に構成されていればよい。フィルタ回路１１０３は、ロードノイズを加工する加工部と呼ぶこともできる。 The input / output interface 110 may further include a filter circuit 1103 that extracts a frequency component of a predetermined band. The filter circuit 1103 realizes the function of the filter unit described above. The filter circuit 1103 is configured to be able to extract a road noise frequency band, for example, a band of 100 to 500 Hz, for example. When extracting this frequency band, for example, as the filter circuit 1103, a low-pass filter that has a cutoff frequency near 1 kHz and extracts a frequency component of 1 kHz or less can be used. Further, the filter circuit 1103 may be a band-pass filter that includes 100 to 500 Hz in the pass band (eg, a band-pass filter that includes 50 Hz to 1 kHz in the pass band). In addition, the filter circuit 1103 is not limited to the example given here, and the filter circuit 1103 may be configured to be able to extract a target frequency band sound. The filter circuit 1103 can also be called a processing unit that processes road noise.
　ネットワークインタフェース１１２は、計算機１００を通信網に接続するためのインタフェースである。この通信網は、例えばＣＡＮ（Controller Area Network）通信網や ＷＡＮ（Wide Area Network）などである。ネットワークインタフェース１１２が通信網に接続する方法は、無線接続であってもよいし、有線接続であってもよい。 The network interface 112 is an interface for connecting the computer 100 to a communication network. This communication network is, for example, a CAN (Controller Area Network) communication network or a WAN (Wide Area Network). The method of connecting the network interface 112 to the communication network may be a wireless connection or a wired connection.
　ストレージデバイス１０８は、車載装置２００の各機能構成部を実現するためのプログラムモジュールを記憶している。プロセッサ１０４は、このプログラムモジュールをメモリ１０６に読み出して実行することで、車載装置２００の機能を実現する。 The storage device 108 stores a program module for realizing each functional component of the in-vehicle device 200. The processor 104 implements the function of the in-vehicle device 200 by reading the program module into the memory 106 and executing it.
　なお、車載装置２００を実現する計算機１００のハードウエア構成は図３の例に限定されない。例えば、車載装置２００は、取り付け部材などを用いて、車両の外周部に取り付け可能に構成されてもよい。マイク１１０１を備える車載装置２００を車両の下部分に取り付けることによって、周囲の別の車両などによる関係ない音が入りにくくなり、ロードノイズを効率よく拾うことができる。この場合において、車載装置２００は、当該車載装置２００が車両に取り付けられたとき、マイク１１０１が車両の下部の路面に向けられるように構成された支持部材を更に備えていてもよい。この構成によっても、ロードノイズを効率よく拾うことができる。 Note that the hardware configuration of the computer 100 that implements the in-vehicle device 200 is not limited to the example of FIG. For example, the in-vehicle device 200 may be configured to be attachable to the outer periphery of the vehicle using an attachment member or the like. By attaching the in-vehicle device 200 including the microphone 1101 to the lower part of the vehicle, it becomes difficult for unrelated sounds from other surrounding vehicles to enter, and road noise can be picked up efficiently. In this case, the in-vehicle device 200 may further include a support member configured such that when the in-vehicle device 200 is attached to the vehicle, the microphone 1101 is directed toward the road surface below the vehicle. Also with this configuration, road noise can be picked up efficiently.
　〔情報処理装置４００のハードウエア構成〕
　情報処理装置４００の各機能構成部は、各機能構成部を実現するハードウエア（例：ハードワイヤードされた電子回路など）で実現されてもよいし、ハードウエアとソフトウエアとの組み合わせ（例：電子回路とそれを制御するプログラムの組み合わせなど）で実現されてもよい。以下、情報処理装置４００の各機能構成部がハードウエアとソフトウエアとの組み合わせで実現される場合について、さらに説明する。 [Hardware configuration of information processing apparatus 400]
Each functional component of the information processing apparatus 400 may be realized by hardware (for example, a hard-wired electronic circuit) that realizes each functional component, or a combination of hardware and software (for example: It may be realized by a combination of an electronic circuit and a program for controlling it). Hereinafter, the case where each functional component of the information processing apparatus 400 is realized by a combination of hardware and software will be further described.
　図４は、情報処理装置４００のハードウエア構成を例示する図である。計算機３００は、情報処理装置４００を実現する計算機である。計算機３００は、情報処理装置４００を実現するために専用に設計された計算機であってもよいし、汎用の計算機であってもよい。 FIG. 4 is a diagram illustrating a hardware configuration of the information processing apparatus 400. The computer 300 is a computer that implements the information processing apparatus 400. The computer 300 may be a computer designed exclusively for realizing the information processing apparatus 400 or a general-purpose computer.
　計算機３００は、バス３０２、プロセッサ３０４、メモリ３０６、ストレージデバイス３０８、入出力インタフェース３１０、及びネットワークインタフェース３１２を有する。バス３０２は、プロセッサ３０４、メモリ３０６、ストレージデバイス３０８、入出力インタフェース３１０、及びネットワークインタフェース３１２が、相互にデータを送受信するためのデータ伝送路である。ただし、プロセッサ３０４などを互いに接続する方法は、バス接続に限定されない。プロセッサ３０４は、マイクロプロセッサ、ＣＰＵ（Central Processing Unit）、又はＧＰＵ（Graphics Processing Unit）などを用いて実現される演算処理装置である。メモリ３０６は、ＲＡＭ（Random Access Memory）などを用いて実現される主記憶装置である。ストレージデバイス３０８は、ＲＯＭ（Read Only Memory）やフラッシュメモリなどを用いて実現される補助記憶装置である。ただし、ストレージデバイス１０８は、ＲＡＭなど、主記憶装置を構成するハードウエアと同様のハードウエアで構成されてもよい。 The computer 300 includes a bus 302, a processor 304, a memory 306, a storage device 308, an input / output interface 310, and a network interface 312. The bus 302 is a data transmission path through which the processor 304, the memory 306, the storage device 308, the input / output interface 310, and the network interface 312 transmit / receive data to / from each other. However, the method for connecting the processors 304 and the like is not limited to bus connection. The processor 304 is an arithmetic processing unit realized using a microprocessor, a CPU (Central Processing Unit), or a GPU (Graphics Processing Unit). The memory 306 is a main storage device realized using a RAM (Random Access Memory) or the like. The storage device 308 is an auxiliary storage device realized using a ROM (Read Only Memory), a flash memory, or the like. However, the storage device 108 may be configured by hardware similar to the hardware configuring the main storage device such as RAM.
　入出力インタフェース３１０は、計算機３００を周辺機器３５と接続するためのインタフェースである。図４において、入出力インタフェース３１０には、キーボードやマウスといった入力装置３５２と、ＬＣＤ（Liquid Crystal Display）といった表示装置３５４、これらの入力装置３５２と表示装置３５４が一体となったタッチパネルなどが接続されている。 The input / output interface 310 is an interface for connecting the computer 300 to the peripheral device 35. In FIG. 4, an input device 352 such as a keyboard and a mouse, a display device 354 such as an LCD (Liquid Crystal Display), a touch panel in which the input device 352 and the display device 354 are integrated are connected to the input / output interface 310. ing.
　ネットワークインタフェース３１２は、計算機３００を通信網に接続するためのインタフェースである。この通信網は、例えばＷＡＮ（Wide Area Network）などである。ネットワークインタフェース３１２が通信網に接続する方法は、無線接続であってもよいし、有線接続であってもよい。 The network interface 312 is an interface for connecting the computer 300 to a communication network. This communication network is, for example, a WAN (Wide Area Network). The method of connecting the network interface 312 to the communication network may be a wireless connection or a wired connection.
　ストレージデバイス３０８は、情報処理装置４００の各機能構成部を実現するためのプログラムモジュールを記憶している。プロセッサ３０４は、このプログラムモジュールをメモリ３０６に読み出して実行することで、情報処理装置４００の機能を実現する。 The storage device 308 stores a program module for realizing each functional component of the information processing apparatus 400. The processor 304 reads out the program module to the memory 306 and executes it, thereby realizing the function of the information processing apparatus 400.
　〔動作例〕
　図５および図６を用いて、第１実施形態における処理の流れについて説明する。図５は、第１実施形態の車載装置２００の処理の流れを例示するフローチャートである。図６は、第１実施形態の情報処理装置４００の処理の流れを例示するフローチャートである。 [Operation example]
A processing flow in the first embodiment will be described with reference to FIGS. 5 and 6. FIG. 5 is a flowchart illustrating the processing flow of the in-vehicle device 200 according to the first embodiment. FIG. 6 is a flowchart illustrating the processing flow of the information processing apparatus 400 according to the first embodiment.
　＜車載装置２００の動作例＞
　まず、図５を用いて第１実施形態における車載装置２００の処理の流れを説明する。 <Operation example of in-vehicle device 200>
First, the flow of processing of the in-vehicle device 200 in the first embodiment will be described with reference to FIG.
　集音部２０２は、マイク１１０１を用いて車両の走行時に発生する音（ロードノイズ）を拾い、音データを生成する（Ｓ１０２）。また、集音部２０２は、ＧＰＳモジュール１１０２から位置情報を取得し、音（ロードノイズ）を拾った位置を示す集音位置情報として、Ｓ１０２で生成した音データに対応付ける（Ｓ１０４）。 The sound collection unit 202 uses the microphone 1101 to pick up a sound (road noise) generated when the vehicle travels, and generates sound data (S102). Further, the sound collection unit 202 acquires position information from the GPS module 1102 and associates it with the sound data generated in S102 as sound collection position information indicating the position where the sound (road noise) is picked up (S104).
　Ｓ１０４の処理において、集音部２０２は、音（ロードノイズ）を拾った時刻を示す時刻情報、音（ロードノイズ）を拾った環境（例：天候や車両の速度など）を示す環境情報、又は、車載装置２００を搭載する車両の車種を示す車種情報を更に取得して、音データに対応付けてもよい。集音部２０２は、例えば、計算機１００に備えられるクロック部（図示せず）やＧＰＳモジュール１１０２から時刻情報を取得することができる。また、集音部２０２は、ネットワークインタフェース１１２を介してネットワーク上のサーバ装置などから、車両の現在位置付近の天候情報を取得することができる。また、集音部２０２は、車両に搭載されたセンサ類（例えば、雨滴センサ、照度センサ、湿度センサなど）のセンシング情報を、天候に関する情報としてネットワークインタフェース１１２を介して取得することができる。また、集音部２０２は、ネットワークインタフェース１１２を介して接続されたＥＣＵから車両の速度の情報等を取得することができる。また、例えば車種情報の事前登録操作を行って車種情報をメモリ１０６等に予め記憶しておくことにより、集音部２０２は、当該メモリ１０６等に記憶された車種情報を必要に応じて取得することができる。 In the process of S104, the sound collection unit 202 includes time information indicating the time when the sound (road noise) is picked up, environment information indicating the environment where the sound (road noise) is picked up (eg, weather, vehicle speed, etc.), or The vehicle type information indicating the vehicle type of the vehicle on which the in-vehicle device 200 is mounted may be further acquired and associated with the sound data. The sound collection unit 202 can acquire time information from, for example, a clock unit (not shown) provided in the computer 100 or the GPS module 1102. In addition, the sound collection unit 202 can acquire weather information near the current position of the vehicle from a server device on the network via the network interface 112. In addition, the sound collection unit 202 can acquire sensing information of sensors (for example, a raindrop sensor, an illuminance sensor, a humidity sensor, etc.) mounted on the vehicle via the network interface 112 as information related to the weather. In addition, the sound collection unit 202 can acquire vehicle speed information and the like from an ECU connected via the network interface 112. Further, for example, by performing a pre-registration operation of the vehicle type information and storing the vehicle type information in the memory 106 or the like in advance, the sound collection unit 202 acquires the vehicle type information stored in the memory 106 or the like as necessary. be able to.
　集音部２０２は、音データと、当該音データに対応付けられた情報を、ストレージデバイス１０８などの記憶領域に一旦蓄積してもよいし、情報処理装置４００に送信するために送信部２０４に渡してもよい。 The sound collection unit 202 may temporarily store the sound data and information associated with the sound data in a storage area such as the storage device 108, or send the sound collection unit 202 to the transmission unit 204 for transmission to the information processing apparatus 400. You may pass.
　送信部２０４は、Ｓ１０２で生成された音声データを、当該音声データに対応付けられた集音位置情報と共に、情報処理装置４００に送信する（Ｓ１０６）。Ｓ１０４の処理において時刻情報や環境情報が取得されている場合、送信部２０４は、当該時刻情報や環境情報を音声情報に更に対応付けて、情報処理装置４００に送信することができる。 The transmission unit 204 transmits the audio data generated in S102 to the information processing apparatus 400 together with the sound collection position information associated with the audio data (S106). When the time information and the environment information are acquired in the process of S104, the transmission unit 204 can further associate the time information and the environment information with the voice information and transmit the information to the information processing apparatus 400.
　なお、情報処理装置４００の宛先情報（例えば、ＩＰ（Internet Protocol）アドレスなど）は、例えばメモリ１０６などに予め登録されている。送信部２０４は、予め決められたタイミングでＳ１０６の処理を実行してもよいし、集音部２０２がロードノイズを拾ったタイミングに応じてＳ１０６の処理を実行してもよい。前者の場合において、音声データと当該音声データに対応付けられた各情報はストレージデバイス１０８等に蓄積されており、送信部２０４は、音声データ及び当該音声データに対応付けた各情報をストレージデバイス１０８等から読み出して情報処理装置４００に送信する。なお、送信部２０４は、情報処理装置４００に送信した情報をストレージデバイス１０８等から削除することができる。また、後者の場合において、音声データと当該音声データに対応付けられた情報は集音部２０２から送信部２０４に渡される。 Note that destination information (for example, an IP (Internet Protocol) address) of the information processing apparatus 400 is registered in advance in the memory 106, for example. The transmission unit 204 may execute the process of S106 at a predetermined timing, or may execute the process of S106 according to the timing when the sound collection unit 202 picks up road noise. In the former case, the voice data and each piece of information associated with the voice data are stored in the storage device 108 or the like, and the transmission unit 204 displays the voice data and each piece of information associated with the voice data in the storage device 108. Or the like and transmitted to the information processing apparatus 400. Note that the transmission unit 204 can delete information transmitted to the information processing apparatus 400 from the storage device 108 or the like. In the latter case, the sound data and information associated with the sound data are transferred from the sound collection unit 202 to the transmission unit 204.
　＜情報処理装置４００の動作例＞
　次に、図６を用いて、第１実施形態における情報処理装置４００の処理の流れについて説明する。 <Operation Example of Information Processing Device 400>
Next, a processing flow of the information processing apparatus 400 according to the first embodiment will be described with reference to FIG.
　取得部４０２は、車載装置２００から送信された情報（音声データと当該音声データに対応付けられた各情報）を取得する（Ｓ２０２）。取得部４０２で取得された情報は、ストレージデバイス３０８等に蓄積され、後述の判断部４０４による処理に利用される。 The acquisition unit 402 acquires information (audio data and each piece of information associated with the audio data) transmitted from the in-vehicle device 200 (S202). Information acquired by the acquisition unit 402 is accumulated in the storage device 308 or the like and used for processing by the determination unit 404 described later.
　判断部４０４は、情報処理装置４００のオペレータによる実行指示などに応じて、ストレージデバイス３０８等に蓄積された音声データ（以下、「比較対象データ」とも表記）を読み出し、インフラストラクチャーの劣化判断処理を実行する（Ｓ２０４）。判断部４０４は、ストレージデバイス３０８等に蓄積された音声データの解析結果（例えば、周波数分布など）を、インフラストラクチャーの劣化を判断する際の基準となるロードノイズデータ（以下、「基準ノイズデータ」とも表記）と比較する。 The determination unit 404 reads out voice data stored in the storage device 308 or the like (hereinafter also referred to as “comparison target data”) in accordance with an execution instruction or the like by an operator of the information processing apparatus 400, and performs infrastructure deterioration determination processing. Execute (S204). The determination unit 404 uses the analysis result (for example, frequency distribution) of the sound data accumulated in the storage device 308 or the like as road noise data (hereinafter referred to as “reference noise data”) as a reference when determining deterioration of the infrastructure. Compared with the above).
　基準ノイズデータは、例えば、正常な路面を走行したときのロードノイズのサンプルデータである。この他にも、基準ノイズデータは、比較対象データに対応するロードノイズよりも過去の時点に収集され、かつ、対応付けられている集音位置情報が共通するロードノイズの音データであってもよい。基準ノイズデータは、例えばメモリ３０６やストレージデバイス３０８に予め記憶されている。そして、判断部４０４は、例えば、比較結果から得られる差分（ロードノイズの差分）の度合いに基づいて、道路等のインフラストラクチャーの劣化状態を判断することができる。一例として、判断部４０４は、比較結果から得られる差分と判断基準となる閾値とを比較して、インフラストラクチャーが劣化したか否かを判定することができる。その他の例として、判断基準となる閾値が複数の段階に分けて設けられていてもよい。この場合、判断部４０４は、当該複数の閾値と比較結果から得られる差分との比較結果から、インフラストラクチャーの劣化状態を段階的なレベルで判別することができる。またその他の例として、判断部４０４は、比較結果から得られる差分、或いは、当該差分を特定の基準に沿って変換した数値などを、劣化状態の判断指標となるスコアとして生成してもよい。 The reference noise data is, for example, road noise sample data when driving on a normal road surface. In addition to this, the reference noise data may be road noise sound data that is collected at a point in time earlier than the road noise corresponding to the comparison target data, and the associated sound collection position information is common. Good. The reference noise data is stored in advance in the memory 306 or the storage device 308, for example. Then, the determination unit 404 can determine the deterioration state of the infrastructure such as a road based on the degree of difference (road noise difference) obtained from the comparison result, for example. As an example, the determination unit 404 can determine whether or not the infrastructure has deteriorated by comparing a difference obtained from the comparison result with a threshold value as a determination criterion. As another example, a threshold value serving as a determination criterion may be provided in a plurality of stages. In this case, the determination unit 404 can determine the degradation state of the infrastructure at a stepwise level from the comparison result between the plurality of threshold values and the difference obtained from the comparison result. As another example, the determination unit 404 may generate a difference obtained from the comparison result, or a numerical value obtained by converting the difference according to a specific reference, as a score serving as a determination index for the deterioration state.
　また、判断部４０４は、過去の複数の時点におけるロードノイズの音データを基準ノイズデータとして用いてもよい。具体的には、判断部４０４は、比較対象データに対応するロードノイズよりも第１の時間前に集音されたロードノイズ（第１の過去のロードノイズ）の音データと、当該第１の時間よりも更に前の時間である、第２の時間前に集音されたロードノイズ（第２の過去のロードノイズ）の音データを基準ノイズデータとして用いることができる。この場合、判断部４０４は、比較対象データと第１の過去のロードノイズに対応する基準ノイズデータとを比較すると共に、当該比較対象データと第２の過去のロードノイズに対応する基準ノイズデータとを比較することによって、インフラストラクチャーの劣化状態を判断することができる。なお、ここでは過去の複数の時点が２つである場合を例示しているが、判断部４０４は、基準ノイズデータとして、過去のロードノイズの音データを３つ以上用いてもよい。このようにすることで、ある期間におけるロードノイズの変化を時間経過と共に比較することができ、インフラストラクチャーの劣化状態をより高精度に判断することができる。 Also, the determination unit 404 may use road noise sound data at a plurality of past points as reference noise data. Specifically, the determination unit 404 includes sound data of road noise (first past road noise) collected before the first time before the road noise corresponding to the comparison target data, and the first Sound data of road noise (second past road noise) collected before the second time, which is a time before the time, can be used as the reference noise data. In this case, the determination unit 404 compares the comparison target data with the reference noise data corresponding to the first past road noise, and also compares the comparison target data with the reference noise data corresponding to the second past road noise. By comparing these, the deterioration state of the infrastructure can be determined. Although the case where there are two past time points is illustrated here, the determination unit 404 may use three or more past road noise sound data as the reference noise data. By doing in this way, the change of the road noise in a certain period can be compared with time passage, and the deterioration state of an infrastructure can be judged with higher accuracy.
　Ｓ２０２の処理において、集音部２０２が、ロードノイズの集音時刻を示す時刻情報が紐付けられている音声データを取得し、当該音声データを時刻情報と共にストレージデバイス３０８等に記憶していたとする。この場合、判断部４０４は、音声データに紐付けられた時刻情報に基づいて、ストレージデバイス３０８等に蓄積されている音声データを分類することができる。例えば、判断部４０４は、音声データに紐付けられた時刻情報に基づいて、ストレージデバイス３０８等に蓄積されている音声データを、例えば時間帯別などに分類することができる。そして、判断部４０４は、時刻情報に基づく分類毎に、ロードノイズを解析することができる。ここで、同じ場所でも時間帯などによって集音環境（例えば、他のノイズ源（対向車や歩行者等）が存在するか否か、他のノイズ源がどの程度存在するか、等）が異なり得る、集音部２０２によって集音される音の特性も変わってくる。ここで説明したような構成を採用すれば、ロードノイズをより詳細に分類することができ、インフラストラクチャーの劣化状態を高精度に判断することが可能となる。 In the process of S202, it is assumed that the sound collection unit 202 acquires audio data associated with time information indicating the road noise collection time, and stores the audio data together with the time information in the storage device 308 or the like. . In this case, the determination unit 404 can classify the audio data stored in the storage device 308 or the like based on the time information associated with the audio data. For example, the determination unit 404 can classify the audio data stored in the storage device 308 or the like based on time information associated with the audio data, for example, by time zone. Then, the determination unit 404 can analyze road noise for each classification based on time information. Here, even in the same place, the sound collection environment (for example, whether there are other noise sources (oncoming cars, pedestrians, etc.), how much other noise sources exist, etc.) varies depending on the time of day, etc. The characteristics of the sound collected by the sound collection unit 202 are also changed. If the configuration described here is adopted, road noise can be classified in more detail, and the deterioration state of the infrastructure can be determined with high accuracy.
　また、Ｓ２０２の処理において、集音部２０２が、ロードノイズを集音したときの環境情報（集音時の天候や集音時の車両の速度など）が紐付けられている音声データを取得し、当該音声データを時刻情報と共にストレージデバイス３０８等に記憶していたとする。この場合、判断部４０４は、音声データに紐付けられた環境情報に基づいて、ストレージデバイス３０８等に蓄積されている音声データを分類することができる。例えば、判断部４０４は、音声データに紐付けられた天候に関する環境情報に基づいて、ストレージデバイス３０８等に蓄積されている音声データを、天候別に分類することができる。また、例えば、判断部４０４は、音声データに紐付けられた車両の速度に関する環境情報に基づいて、ストレージデバイス３０８等に蓄積されている音声データを、車両の速度別に分類することができる。そして、判断部４０４は、環境情報に基づく分類毎に、ロードノイズを解析することができる。ここで、天候が異なれば、集音部２０２によって集音される音の特性も変わってくる。例えば、天候が晴れの場合、雨の場合、風が強い／弱い場合など、それぞれの天候に応じて集音部２０２によって集音される音の特性が変わってくる。また、車両の速度に応じて、集音部２０２によって集音される音の特性が変わってくる。ここで説明したような構成を採用すれば、ロードノイズをより詳細に分類することができ、インフラストラクチャーの劣化状態を高精度に判断することが可能となる。 Also, in the process of S202, the sound collection unit 202 obtains audio data associated with environmental information (such as weather at the time of sound collection and vehicle speed at the time of sound collection) when road noise is collected. Assume that the audio data is stored in the storage device 308 and the like together with time information. In this case, the determination unit 404 can classify the sound data stored in the storage device 308 or the like based on the environment information associated with the sound data. For example, the determination unit 404 can classify the sound data stored in the storage device 308 or the like according to the weather based on the environment information related to the weather associated with the sound data. Further, for example, the determination unit 404 can classify the voice data stored in the storage device 308 or the like according to the speed of the vehicle based on the environmental information related to the speed of the vehicle associated with the voice data. And the judgment part 404 can analyze road noise for every classification | category based on environmental information. Here, if the weather is different, the characteristics of the sound collected by the sound collection unit 202 also change. For example, the characteristics of the sound collected by the sound collection unit 202 vary depending on the weather, such as when the weather is sunny, rain, or when the wind is strong / weak. Further, the characteristics of the sound collected by the sound collection unit 202 vary depending on the speed of the vehicle. If the configuration described here is adopted, road noise can be classified in more detail, and the deterioration state of the infrastructure can be determined with high accuracy.
　Ｓ２０２の処理において、集音部２０２が、車載装置２００が配置されている車両の種類を示す車種情報が紐付けられている音声データを取得し、当該音声データを車種情報と共にストレージデバイス３０８等に記憶していたとする。この場合、判断部４０４は、音声データに紐付けられた車種情報に基づいて、ストレージデバイス３０８等に蓄積されている音声データを分類することができる。例えば、判断部４０４は、音声データに紐付けられた車種情報に基づいて、ストレージデバイス３０８等に蓄積されている音声データを、車種別、車重別などといった分類に分けることができる。そして、判断部４０４は、車種情報に基づく分類毎に、ロードノイズを解析することができる。ここで、車種が異なれば、車両の特性（例えば、車両の重さ、ホイールの数、ホイールベースなど）が変わり、それによって、集音部２０２で集音される音の特性も変わってくる。ここで説明したような構成を採用すれば、ロードノイズをより詳細に分類することができ、インフラストラクチャーの劣化状態を高精度に判断することが可能となる。 In the process of S202, the sound collection unit 202 acquires audio data associated with vehicle type information indicating the type of vehicle on which the in-vehicle device 200 is disposed, and the audio data is stored in the storage device 308 together with the vehicle type information. Suppose you remembered it. In this case, the determination unit 404 can classify the voice data stored in the storage device 308 or the like based on the vehicle type information associated with the voice data. For example, the determination unit 404 can divide the audio data stored in the storage device 308 or the like into classifications such as vehicle type and vehicle weight based on the vehicle type information associated with the audio data. And the judgment part 404 can analyze road noise for every classification | category based on vehicle type information. Here, if the vehicle type is different, the characteristics of the vehicle (for example, the weight of the vehicle, the number of wheels, the wheel base, etc.) change, and thereby the characteristics of the sound collected by the sound collection unit 202 also change. If the configuration described here is adopted, road noise can be classified in more detail, and the deterioration state of the infrastructure can be determined with high accuracy.
　また、集音部２０２によって集音された音の中には、ロードノイズ以外のノイズが含まれる可能性がある。例えば、路面に水たまりがある、或いは、何らかの物体が落ちている場合において、車両がその上を通過すれば、それらに起因するノイズが発生し、集音部２０２によって収集され得る。このようなノイズを除去するために、判断部４０４は、特定の時間帯における音データの解析結果が、その他の時間帯（例えば、特定の時間帯のすぐ前の時間帯など）における音データの解析結果と異なるか否かを判定するように構成されていてもよい。具体的には、特定の時間帯における音データの解析結果を、その他の時間帯における音データの解析結果と比較した結果として所定以上の相違が検出された場合に、判断部４０４は、当該特定の時間帯における音データをインフラストラクチャーの劣化状態を判断する要素から除外することができる。このようにすることで、明らかなノイズを含む音データを解析対象から除外して、インフラストラクチャーの劣化状態を高精度に判断することが可能となる。 Further, the sound collected by the sound collection unit 202 may include noise other than road noise. For example, when there is a puddle on the road surface or some object is falling, if the vehicle passes over it, noise due to them is generated and can be collected by the sound collection unit 202. In order to remove such noise, the determination unit 404 determines that the analysis result of the sound data in a specific time zone is the result of the sound data in another time zone (for example, the time zone immediately before the specific time zone). It may be configured to determine whether or not the analysis result is different. Specifically, when a difference greater than or equal to a predetermined value is detected as a result of comparing the analysis result of sound data in a specific time period with the analysis result of sound data in another time period, the determination unit 404 determines that the specific data The sound data in the time zone can be excluded from the elements that determine the deterioration state of the infrastructure. By doing this, it is possible to exclude sound data including obvious noise from the analysis target and determine the deterioration state of the infrastructure with high accuracy.
　判断部４０４は、Ｓ２０４の処理による、インフラストラクチャーの劣化状態の解析結果を、所定の記憶部（例えば、ストレージデバイス３０８等）に格納する（Ｓ２０６）。このようにすることで、今回の解析結果を、次回以降の解析にフィードバックさせることが可能となる。 The determination unit 404 stores the analysis result of the deterioration state of the infrastructure by the process of S204 in a predetermined storage unit (for example, the storage device 308) (S206). By doing in this way, it becomes possible to feed back the analysis result of this time to the analysis after the next time.
　［第２実施形態］
　本実施形態は、以下の点を除いて、第１実施形態と同様の構成を有する。 [Second Embodiment]
This embodiment has the same configuration as that of the first embodiment except for the following points.
　〔システム構成〕
　図７は、第２実施形態における情報収集システム１のシステム構成を例示する図である。図７に示されるように、車載装置２００と情報処理装置４００とを含んで構成される。車載装置２００と情報処理装置４００は、ネットワークを介して互いに通信可能に接続されている。 〔System configuration〕
FIG. 7 is a diagram illustrating a system configuration of the information collection system 1 in the second embodiment. As shown in FIG. 7, it includes an in-vehicle device 200 and an information processing device 400. The in-vehicle device 200 and the information processing device 400 are connected to be communicable with each other via a network.
　＜車載装置２００の機能構成＞
　本実施形態の車載装置２００は、第１実施形態の構成に加えて、指定位置情報取得部２０６を更に備える。指定位置情報取得部２０６は、情報処理装置４００（外部装置）によって指定された位置を示す指定位置情報を取得する。 <Functional configuration of in-vehicle device 200>
The in-vehicle device 200 of this embodiment further includes a designated position information acquisition unit 206 in addition to the configuration of the first embodiment. The specified position information acquisition unit 206 acquires specified position information indicating a position specified by the information processing apparatus 400 (external device).
　本実施形態の送信部２０４は、指定位置情報取得部２０６が取得した指定位置情報によって示される位置に対応する位置において集音部２０２が拾ったロードノイズの音データを、情報処理装置４００に送信するように構成される。送信部２０４の具体的な動作については後述する。 The transmission unit 204 of the present embodiment transmits road noise sound data picked up by the sound collection unit 202 at a position corresponding to the position indicated by the specified position information acquired by the specified position information acquisition unit 206 to the information processing apparatus 400. Configured to do. Specific operation of the transmission unit 204 will be described later.
　＜情報処理装置４００の機能構成＞
　本実施形態の情報処理装置４００は、指定位置情報送信部４０６を更に備える。指定位置情報送信部４０６は、例えば、入出力インタフェース３１０に接続された入力装置３５２などを介して、位置の指定入力を受け付ける。そして、指定位置情報送信部４０６は、入力された位置を示す情報（指定位置情報）を、車載装置２００に対して送信する。指定位置情報送信部４０６は、上述の指定位置情報取得部２０６と対をなす処理部である。 <Functional Configuration of Information Processing Device 400>
The information processing apparatus 400 according to the present embodiment further includes a designated position information transmission unit 406. The designated position information transmission unit 406 accepts a position designation input via, for example, the input device 352 connected to the input / output interface 310. Then, the designated position information transmission unit 406 transmits information indicating the input position (designated position information) to the in-vehicle device 200. The designated position information transmission unit 406 is a processing unit that makes a pair with the above-described designated position information acquisition unit 206.
　〔車載装置２００のハードウエア構成〕
　本実施形態の車載装置２００は、第１実施形態と同様のハードウエア構成（例：図３）を有する。本実施形態において、ストレージデバイス１０８は、指定位置情報取得部２０６の機能を実現するためのプログラムモジュールを更に記憶している。プロセッサ１０４は、このプログラムモジュールをメモリ１０６に読み出して実行することで、指定位置情報取得部２０６の機能を更に実現する。 [Hardware configuration of in-vehicle device 200]
The in-vehicle device 200 of this embodiment has the same hardware configuration (example: FIG. 3) as that of the first embodiment. In the present embodiment, the storage device 108 further stores a program module for realizing the function of the designated position information acquisition unit 206. The processor 104 further realizes the function of the designated position information acquisition unit 206 by reading this program module into the memory 106 and executing it.
　〔情報処理装置４００のハードウエア構成〕
　本実施形態の情報処理装置４００は、第１実施形態と同様のハードウエア構成（例：図４）を有する。本実施形態において、ストレージデバイス３０８は、指定位置情報送信部４０６の機能を実現するためのプログラムモジュールを更に記憶している。プロセッサ３０４は、このプログラムモジュールをメモリ３０６に読み出して実行することで、指定位置情報送信部４０６の機能を更に実現する。 [Hardware configuration of information processing apparatus 400]
The information processing apparatus 400 of this embodiment has the same hardware configuration (for example, FIG. 4) as that of the first embodiment. In the present embodiment, the storage device 308 further stores a program module for realizing the function of the designated position information transmission unit 406. The processor 304 further realizes the function of the designated position information transmission unit 406 by reading this program module into the memory 306 and executing it.
　〔動作例〕
　図８乃至図１０を用いて、第２実施形態における処理の流れについて説明する。図８は、第２実施形態の情報処理装置４００の処理の流れを例示するフローチャートである。図９及び図１０は、第２実施形態の車載装置２００の処理の流れを例示するフローチャートである。 [Operation example]
The flow of processing in the second embodiment will be described with reference to FIGS. FIG. 8 is a flowchart illustrating the processing flow of the information processing apparatus 400 according to the second embodiment. 9 and 10 are flowcharts illustrating the flow of processing of the in-vehicle device 200 according to the second embodiment.
　＜情報処理装置４００の動作例＞
　まず、図８を用いて第２実施形態における情報処理装置４００の処理の流れを説明する。以下で説明する処理は、車載装置２００に指定位置情報を送信するまでの処理の流れである。 <Operation Example of Information Processing Device 400>
First, the flow of processing of the information processing apparatus 400 in the second embodiment will be described with reference to FIG. The process described below is a process flow until the designated position information is transmitted to the in-vehicle device 200.
　指定位置情報送信部４０６は、入力装置３５２などを介して、指定位置情報の入力操作を受け付ける（Ｓ３０２）。例えば、情報処理装置４００のオペレータの操作によって、位置座標（ｘ，ｙ）が入力された場合、指定位置情報送信部４０６は、位置座標（ｘ，ｙ）を示す指定位置情報を生成する。なお、指定位置情報に含められる位置は複数であってもよい。また、指定位置情報は、３つの地点の位置情報を用いて定義される範囲を示す情報であってもよい。 The designated position information transmission unit 406 accepts an input operation of designated position information via the input device 352 or the like (S302). For example, when the position coordinates (x, y) are input by the operation of the operator of the information processing apparatus 400, the specified position information transmission unit 406 generates specified position information indicating the position coordinates (x, y). A plurality of positions may be included in the designated position information. Further, the designated position information may be information indicating a range defined using position information of three points.
　また、指定位置情報送信部４０６は、判断部４０４による解析結果の履歴データに基づいて、指定位置情報を自動的に生成可能に構成されていてもよい。この場合、指定位置情報送信部４０６は、図６におけるＳ２０６の処理でストレージデバイス３０８等に格納された解析結果を読み出して用いることができる。一例として、指定位置情報送信部４０６は、ストレージデバイス３０８の過去の解析結果を参照して、近くインフラストラクチャーの劣化による問題が表面化し得る解析結果（例えば、指標となるスコアが所定の閾値以上、劣化状態のレベルが所定レベル以上、など）が得られた位置を特定し、その位置を示す情報を生成することができる。また、指定位置情報送信部４０６は、特定された位置を中心に所定の範囲を示す情報を生成してもよい。 Further, the designated position information transmission unit 406 may be configured to automatically generate the designated position information based on the history data of the analysis result by the determination unit 404. In this case, the designated position information transmission unit 406 can read and use the analysis result stored in the storage device 308 or the like in the process of S206 in FIG. As an example, the designated position information transmission unit 406 refers to the past analysis result of the storage device 308, and the analysis result (for example, the score serving as an index is equal to or greater than a predetermined threshold value) The position where the level of the deterioration state is equal to or higher than a predetermined level is specified, and information indicating the position can be generated. Further, the designated position information transmission unit 406 may generate information indicating a predetermined range around the specified position.
　指定位置情報送信部４０６は、Ｓ３０２の処理で生成された指定位置情報を車載装置２００に送信する（Ｓ３０４）。指定位置情報送信部４０６は、予め定められた車載装置２００に対して指定位置情報を送信してもよいし、ランダムにピックアップした車載装置２００に対して指定位置情報を送信してもよい。また、指定位置情報送信部４０６は、車載装置２００から得られる各車両の現在位置情報に基づいて、指定位置情報から所定の範囲内に位置する車両または指定位置情報が示す位置に向かっている車両などに搭載される車載装置２００を特定し、その車載装置２００に対して指定位置情報を送信してもよい。また、指定位置情報には、収集期間（すなわち、指定位置情報の有効期間）を示す情報が含まれていてもよい。なお、各車載装置２００の宛先アドレスは、例えば、ストレージデバイス３０８などに予め登録されている。 The designated position information transmission unit 406 transmits the designated position information generated in the process of S302 to the in-vehicle device 200 (S304). The designated position information transmission unit 406 may transmit the designated position information to a predetermined in-vehicle device 200, or may transmit the designated position information to the in-vehicle device 200 picked up at random. In addition, the designated position information transmission unit 406 is based on the current position information of each vehicle obtained from the in-vehicle device 200, and is a vehicle that is located within a predetermined range from the designated position information or a vehicle that is directed to the position indicated by the designated position information. For example, the in-vehicle device 200 mounted on the device may be specified, and the designated position information may be transmitted to the in-vehicle device 200. The designated position information may include information indicating a collection period (that is, an effective period of the designated position information). The destination address of each in-vehicle device 200 is registered in advance in the storage device 308, for example.
　＜車載装置２００の動作例１＞
　次に、図９を用いて第２実施形態における車載装置２００の処理の流れを説明する。以下の処理では、車載装置２００が指定位置情報によって示される位置で集音部２０２を駆動させる処理の一例を説明する。 <Operation example 1 of the in-vehicle device 200>
Next, the flow of processing of the in-vehicle device 200 in the second embodiment will be described with reference to FIG. In the following processing, an example of processing in which the in-vehicle device 200 drives the sound collection unit 202 at a position indicated by the designated position information will be described.
　指定位置情報取得部２０６は、指定位置情報送信部４０６から送信された指定位置情報を取得する（Ｓ４０２）。指定位置情報取得部２０６は、ここで取得した指定位置情報をメモリ１０６やストレージデバイス１０８等に記憶する。 The designated position information acquisition unit 206 acquires the designated position information transmitted from the designated position information transmission unit 406 (S402). The specified position information acquisition unit 206 stores the acquired specified position information in the memory 106, the storage device 108, or the like.
　集音部２０２は、例えば所定の間隔でＧＰＳモジュール１１０２から車両の現在位置情報を取得する（Ｓ４０４）。そして、集音部２０２は、Ｓ４０２の処理で取得した指定位置情報と比較し、所定の基準を満たすか否かを判定する（Ｓ４０６）。車両の現在位置情報によって示される位置が指定位置情報によって示される位置（又は範囲）に対して所定の基準を満たす場合（Ｓ４０６：ＹＥＳ）、集音部２０２は、集音動作（音データを生成し、当該音データと集音位置情報とを少なくとも対応付ける動作）を開始する（Ｓ４０８）。例えば、現在位置情報によって示される位置と指定位置情報によって示される位置（又は範囲）との距離が所定値以下である場合に、集音部２０２は、集音動作を開始することができる。この場合において、現在位置情報によって示される位置と指定位置情報によって示される位置（又は範囲）との距離は、単純な直線距離で算出されてもよいし、実際の経路上における距離で算出されてもよい。一方、車両の現在位置情報によって示される位置が指定位置情報によって示される位置（又は範囲）に対して所定の基準を満たす場合（Ｓ４０６：ＮＯ）、集音部２０２は、集音動作を開始しない、又は、集音動作を停止させる（Ｓ４１０）。例えば、集音部２０２は、現在位置情報によって示される位置と指定位置情報によって示される位置（又は範囲）との距離が所定の閾値以上である場合は、集音動作を開始しない。また、このときに既に集音動作を行っている場合には、集音部２０２は、集音動作を停止させる。 The sound collection unit 202 acquires the current position information of the vehicle from the GPS module 1102, for example, at a predetermined interval (S404). Then, the sound collection unit 202 compares the designated position information acquired in the process of S402 and determines whether or not a predetermined standard is satisfied (S406). When the position indicated by the current position information of the vehicle satisfies a predetermined standard with respect to the position (or range) indicated by the specified position information (S406: YES), the sound collection unit 202 generates a sound collection operation (generates sound data) Then, the operation of associating at least the sound data and the sound collection position information) is started (S408). For example, when the distance between the position indicated by the current position information and the position (or range) indicated by the designated position information is equal to or less than a predetermined value, the sound collection unit 202 can start the sound collection operation. In this case, the distance between the position indicated by the current position information and the position (or range) indicated by the designated position information may be calculated as a simple straight line distance or as a distance on an actual route. Also good. On the other hand, when the position indicated by the current position information of the vehicle satisfies a predetermined standard with respect to the position (or range) indicated by the specified position information (S406: NO), the sound collection unit 202 does not start the sound collection operation. Alternatively, the sound collecting operation is stopped (S410). For example, the sound collection unit 202 does not start the sound collection operation when the distance between the position indicated by the current position information and the position (or range) indicated by the designated position information is equal to or greater than a predetermined threshold. If the sound collection operation has already been performed at this time, the sound collection unit 202 stops the sound collection operation.
　なお、上述の集音動作によって生成される音データを送信する流れは、第１実施形態で説明した流れと同様である。送信部２０４は、例えば、集音部２０２が集音動作を開始した後でその集音動作を停止したタイミングに応じて、その間に生成された音データを情報処理装置４００に送信することができる。また、集音部２０２は、集音動作を開始してからその集音動作を停止するまでの間に生成された音データを、即座に情報処理装置４００に送信せずに、ストレージデバイス１０８等に一時的に蓄積しておいてもよい。この場合、送信部２０４は、情報処理装置４００からの音データの送信要求や予め決められた音データの送信タイミングに応じて、ストレージデバイス１０８に蓄積された音データを送信してもよい。 Note that the flow of transmitting the sound data generated by the sound collection operation described above is the same as the flow described in the first embodiment. For example, the transmission unit 204 can transmit the sound data generated during that time to the information processing apparatus 400 according to the timing when the sound collection unit 202 stops the sound collection operation after the sound collection unit 202 starts the sound collection operation. . In addition, the sound collection unit 202 does not immediately transmit sound data generated between the start of the sound collection operation and the stop of the sound collection operation to the information processing apparatus 400, and the like. It may be temporarily stored in In this case, the transmission unit 204 may transmit the sound data stored in the storage device 108 in response to a sound data transmission request from the information processing apparatus 400 or a predetermined sound data transmission timing.
　＜車載装置２００の動作例２＞
　次に、図１０を用いて第２実施形態における車載装置２００の処理の他の流れを説明する。以下の処理では、送信部２０４が、車載装置２００が指定位置情報によって示される位置で収集された音データを選別して情報処理装置４００に送信する処理の一例を説明する。 <Operation example 2 of the in-vehicle device 200>
Next, the other flow of the process of the vehicle-mounted apparatus 200 in 2nd Embodiment is demonstrated using FIG. In the following process, an example of a process in which the transmission unit 204 selects the sound data collected at the position indicated by the designated position information and transmits the sound data to the information processing apparatus 400 will be described.
　指定位置情報取得部２０６は、指定位置情報送信部４０６から送信された指定位置情報を取得する（Ｓ５０２）。指定位置情報取得部２０６は、ここで取得した指定位置情報をメモリ１０６やストレージデバイス１０８等に記憶する。 The designated position information acquisition unit 206 acquires the designated position information transmitted from the designated position information transmission unit 406 (S502). The specified position information acquisition unit 206 stores the acquired specified position information in the memory 106, the storage device 108, or the like.
　集音部２０２は、Ｓ５０２の指定位置情報の取得処理とは別に、走行中に発生する音（ロードノイズ）を収集して音データを生成する（Ｓ５０４）。このとき、集音部２０２は、例えばＧＰＳモジュール１１０２から車両の現在位置情報を取得し、Ｓ５０４で生成された音データに対応付ける（Ｓ５０６）。Ｓ５０６で取得される現在位置情報は、音（ロードノイズ）を収集した位置を示す集音位置情報と呼ぶこともできる。ここで生成された音データは、ストレージデバイス１０８等に一旦蓄積されてもよいし、送信部２０４に直接渡されてもよい。以下では、音データがストレージデバイス１０８等に一旦蓄積された場合について説明する。 The sound collection unit 202 generates sound data by collecting sounds (road noise) generated during traveling, separately from the acquisition processing of the designated position information in S502 (S504). At this time, the sound collection unit 202 acquires the current position information of the vehicle from the GPS module 1102, for example, and associates it with the sound data generated in S504 (S506). The current position information acquired in S506 can also be referred to as sound collection position information indicating a position where sound (road noise) is collected. The sound data generated here may be temporarily stored in the storage device 108 or the like, or may be directly passed to the transmission unit 204. Hereinafter, a case where sound data is temporarily stored in the storage device 108 or the like will be described.
　集音部２０２によって生成された音データは、送信部２０４によって送信される。ここで、送信部２０４は、Ｓ５０２の処理でメモリ１０６やストレージデバイス１０８に記憶された指定位置情報を読み出す（Ｓ５０８）。そして、送信部２０４は、ストレージデバイス１０８等に蓄積された音データの中から、Ｓ５０８の処理で読み出した指定位置情報に対応する集音位置情報と対応付けられている音データを特定する（Ｓ５１０）。一例として、送信部２０４は、指定位置情報によって示される位置（又は範囲）との距離が所定値以下となる位置を示す現在位置情報が対応付けられている音データを特定する。そして、送信部２０４は、Ｓ５１０の処理で特定した音データを、情報処理装置４００に対して送信する（Ｓ５１２）。情報処理装置４００は、このように送信された音データを用いて、第１実施形態で説明したように、インフラストラクチャーの劣化状態を判断する処理を実行することができる。 The sound data generated by the sound collection unit 202 is transmitted by the transmission unit 204. Here, the transmission unit 204 reads the designated position information stored in the memory 106 or the storage device 108 in the process of S502 (S508). Then, the transmission unit 204 specifies sound data associated with the sound collection position information corresponding to the designated position information read out in the process of S508 from the sound data stored in the storage device 108 or the like (S510). ). As an example, the transmission unit 204 specifies sound data associated with current position information indicating a position where the distance from the position (or range) indicated by the specified position information is a predetermined value or less. Then, the transmission unit 204 transmits the sound data specified in the process of S510 to the information processing apparatus 400 (S512). As described in the first embodiment, the information processing apparatus 400 can execute the process of determining the deterioration state of the infrastructure using the sound data transmitted in this way.
　以上、本実施形態では、情報処理装置４００で指定された位置に応じた音データが、車載装置２００から送信される。情報処理装置４００で指定される位置は、例えば、オペレータの操作入力や過去の解析結果に基づいて決定される。これにより、オペレータが重点的に確認したい位置での音データ、又は、過去の解析結果から劣化状態がある程度進んでいる位置での音データを選択的に収集し、解析を行うことが可能となる。 As described above, in the present embodiment, the sound data corresponding to the position designated by the information processing apparatus 400 is transmitted from the in-vehicle apparatus 200. The position specified by the information processing apparatus 400 is determined based on, for example, an operator input or past analysis results. As a result, it is possible to selectively collect and analyze sound data at a position that the operator wants to confirm with priority or sound data at a position where the deterioration state has progressed to some extent from past analysis results. .
　［第３実施形態］
　本実施形態は、以下の点を除いて、第１実施形態と同様の構成を有する。 [Third Embodiment]
This embodiment has the same configuration as that of the first embodiment except for the following points.
　〔システム構成〕
　図１１は、第３実施形態における情報収集システム１のシステム構成を例示する図である。図１１に示されるように、車載装置２００と情報処理装置４００とを含んで構成される。車載装置２００と情報処理装置４００は、ネットワークを介して互いに通信可能に接続されている。 〔System configuration〕
FIG. 11 is a diagram illustrating a system configuration of the information collection system 1 according to the third embodiment. As shown in FIG. 11, it includes an in-vehicle device 200 and an information processing device 400. The in-vehicle device 200 and the information processing device 400 are connected to be communicable with each other via a network.
　＜車載装置２００の機能構成＞
　本実施形態の車載装置２００は、第１実施形態の構成に加えて、注意情報取得部２０８、および制御部２１０を更に備える。注意情報取得部２０８は、情報処理装置４００（外部装置）から送信される注意情報を取得する。注意情報は、判断部４０４により「劣化した」と判断されたインフラストラクチャーの位置に関する情報を少なくとも含んでいる。制御部２１０は、注意情報取得部２０８により取得された注意情報に基づいて、車両５００に搭載される様々な装置の動作を制御する。一例として、制御部２１０は、注意情報取得部２０８により取得された注意情報を用いて特定される位置において、車載装置２００を搭載する車両５００の乗員に対して注意喚起メッセージを提示するよう、図示しない表示装置または音声出力装置を制御する。 <Functional configuration of in-vehicle device 200>
The in-vehicle device 200 of this embodiment further includes a caution information acquisition unit 208 and a control unit 210 in addition to the configuration of the first embodiment. The attention information acquisition unit 208 acquires the attention information transmitted from the information processing apparatus 400 (external device). The attention information includes at least information related to the location of the infrastructure determined as “degraded” by the determination unit 404. The control unit 210 controls the operation of various devices mounted on the vehicle 500 based on the attention information acquired by the attention information acquisition unit 208. As an example, the control unit 210 is illustrated so as to present a warning message to an occupant of the vehicle 500 on which the in-vehicle device 200 is mounted at a position specified using the attention information acquired by the attention information acquisition unit 208. Control the display device or audio output device.
　＜情報処理装置４００の機能構成＞
　上述の各実施形態では、判断部４０４が、車載装置２００を用いて収集されたロードノイズに基づいて、インフラストラクチャーの劣化状態を判断する流れを説明した。ここで、判断部４０４により「劣化している」と判断されたインフラストラクチャーの位置は、走行時に注意を要する位置、場合によっては、走行を避けることが好ましい位置と言える。すなわち、判断部４０４により「劣化している」と判断されたインフラストラクチャーの位置は、車載装置２００を搭載する車両５００の乗員に対する注意喚起メッセージを出力すべき位置の基準として利用できる。そこで、本実施形態の情報処理装置４００は、第１実施形態の構成に加えて、注意情報送信部４０８を更に備える。 <Functional Configuration of Information Processing Device 400>
In each of the above-described embodiments, the flow has been described in which the determination unit 404 determines the infrastructure deterioration state based on road noise collected using the in-vehicle device 200. Here, the position of the infrastructure determined as “deteriorated” by the determination unit 404 can be said to be a position that requires attention during traveling, and in some cases, it is preferable to avoid traveling. That is, the position of the infrastructure determined as “deteriorated” by the determination unit 404 can be used as a reference for the position where the alert message for the passenger of the vehicle 500 on which the in-vehicle device 200 is mounted should be output. Therefore, the information processing apparatus 400 of this embodiment further includes a caution information transmission unit 408 in addition to the configuration of the first embodiment.
　注意情報送信部４０８は、判断部４０４によりインフラストラクチャーの劣化状態のレベルが所定レベル以上と判断された場合に、当該インフラストラクチャーの位置（劣化位置）に関する情報を含む注意情報を生成する。そして、注意情報送信部４０８は、生成した注意情報を車載装置２００に送信する。注意情報送信部４０８は、上述の注意情報取得部２０８と対をなす処理部である。 When the determination unit 404 determines that the level of the infrastructure deterioration state is equal to or higher than a predetermined level, the attention information transmission unit 408 generates attention information including information on the position (deterioration position) of the infrastructure. Then, the caution information transmission unit 408 transmits the generated caution information to the in-vehicle device 200. The attention information transmission unit 408 is a processing unit that is paired with the above-described attention information acquisition unit 208.
　〔車載装置２００のハードウエア構成〕
　本実施形態の車載装置２００は、第１実施形態と同様のハードウエア構成（例：図３）を有する。本実施形態において、ストレージデバイス１０８は、注意情報取得部２０８、および制御部２１０の機能を実現するためのプログラムモジュールを更に記憶している。プロセッサ１０４は、このプログラムモジュールをメモリ１０６に読み出して実行することで、注意情報取得部２０８、および制御部２１０の機能を更に実現する。 [Hardware configuration of in-vehicle device 200]
The in-vehicle device 200 of this embodiment has the same hardware configuration (example: FIG. 3) as that of the first embodiment. In the present embodiment, the storage device 108 further stores program modules for realizing the functions of the attention information acquisition unit 208 and the control unit 210. The processor 104 further realizes the functions of the attention information acquisition unit 208 and the control unit 210 by reading the program module into the memory 106 and executing the program module.
　〔情報処理装置４００のハードウエア構成〕
　本実施形態の情報処理装置４００は、第１実施形態と同様のハードウエア構成（例：図４）を有する。本実施形態において、ストレージデバイス３０８は、注意情報送信部４０８の機能を実現するためのプログラムモジュールを更に記憶している。プロセッサ３０４は、このプログラムモジュールをメモリ３０６に読み出して実行することで、注意情報送信部４０８の機能を更に実現する。 [Hardware configuration of information processing apparatus 400]
The information processing apparatus 400 of this embodiment has the same hardware configuration (for example, FIG. 4) as that of the first embodiment. In the present embodiment, the storage device 308 further stores a program module for realizing the function of the attention information transmission unit 408. The processor 304 further realizes the function of the attention information transmission unit 408 by reading this program module into the memory 306 and executing it.
　〔動作例〕
　図１２および図１３を用いて、第３実施形態における処理の流れについて説明する。図１２は、第３実施形態の情報処理装置４００の処理の流れを例示するフローチャートである。図１３は、第２実施形態の車載装置２００の処理の流れを例示するフローチャートである。 [Operation example]
The flow of processing in the third embodiment will be described with reference to FIGS. FIG. 12 is a flowchart illustrating the processing flow of the information processing apparatus 400 according to the third embodiment. FIG. 13 is a flowchart illustrating the process flow of the in-vehicle device 200 according to the second embodiment.
　＜情報処理装置４００の動作例＞
　まず、図１２を用いて第３実施形態における情報処理装置４００の処理の流れを説明する。なお、本図のＳ６０２、Ｓ６０４、および、Ｓ６１０の処理は、それぞれ、図６のＳ２０２、Ｓ２０４、およびＳ２０６の処理と同様であるため、ここでは説明を割愛する。 <Operation Example of Information Processing Device 400>
First, the flow of processing of the information processing apparatus 400 in the third embodiment will be described with reference to FIG. Note that the processing in S602, S604, and S610 in this figure is the same as the processing in S202, S204, and S206 in FIG. 6, respectively, and thus description thereof is omitted here.
　注意情報送信部４０８は、判断部４０４によりインフラストラクチャーの劣化状態のレベルが所定レベル以上に劣化していると判断された否かを判定する（Ｓ６０６）。インフラストラクチャーの劣化状態のレベルが所定レベル以上と判断された場合（Ｓ６０６：ＹＥＳ）、注意情報送信部４０８は、所定レベル以上に劣化していると判断されたインフラストラクチャーの位置に関する劣化位置情報を取得する。ここで所定レベル以上に劣化していると判断されたインフラストラクチャーの位置は、判断部４０４が当該インフラストラクチャーの劣化状態の判断を行うために解析したロードノイズの集音位置である。そして、注意情報送信部４０８は、取得した劣化位置情報を用いて、注意情報を生成する。一例として、注意情報送信部４０８は、取得した劣化位置情報と、注意喚起メッセージを示す情報と、を含む注意情報を生成する。例えば、注意情報送信部４０８は、判断部４０４によるインフラストラクチャーの劣化状態の判断結果（劣化の度合い）に応じた、注意喚起メッセージを選択することができる。注意喚起メッセージは、例えば、情報処理装置４００のストレージデバイス３０８などに記憶されている。そして、注意情報送信部４０８は、生成した注意情報を車載装置２００に送信する（Ｓ６０８）。そしてＳ６１０に進み、判断部４０４は、インフラストラクチャーの劣化状態の解析結果を、所定の記憶部に格納する。インフラストラクチャーの劣化状態のレベルが所定レベル以上と判断されなかった場合（Ｓ６０６：ＮＯ）、注意情報の送信は行われずＳ６１０に進み、判断部４０４は、インフラストラクチャーの劣化状態の解析結果を、所定の記憶部に格納する。 The attention information transmission unit 408 determines whether or not the determination unit 404 determines that the level of the infrastructure deterioration state has deteriorated to a predetermined level or more (S606). When it is determined that the level of the infrastructure deterioration state is equal to or higher than the predetermined level (S606: YES), the attention information transmitting unit 408 displays the deterioration position information regarding the position of the infrastructure determined to be deteriorated to the predetermined level or higher. get. Here, the position of the infrastructure determined to be deteriorated to a predetermined level or more is the road noise collecting position analyzed by the determination unit 404 to determine the deterioration state of the infrastructure. Then, the caution information transmission unit 408 generates caution information using the acquired degradation position information. As an example, the caution information transmission unit 408 generates caution information including the acquired deterioration position information and information indicating the caution message. For example, the caution information transmission unit 408 can select a caution message according to the determination result (degradation degree) of the infrastructure deterioration state by the determination unit 404. The alert message is stored in the storage device 308 of the information processing apparatus 400, for example. Then, the caution information transmission unit 408 transmits the generated caution information to the in-vehicle device 200 (S608). In step S610, the determination unit 404 stores the analysis result of the infrastructure deterioration state in a predetermined storage unit. When it is not determined that the level of the infrastructure degradation state is equal to or higher than the predetermined level (S606: NO), the attention information is not transmitted and the process proceeds to S610, and the determination unit 404 receives the analysis result of the infrastructure degradation state as the predetermined level. Stored in the storage unit.
　＜車載装置２００の動作例＞
　次に、図１３を用いて第３実施形態における車載装置２００の処理の流れを説明する。以下の処理では、車載装置２００が注意情報によって示される位置で注意喚メッセージを提示する処理の一例を説明する。 <Operation example of in-vehicle device 200>
Next, the flow of processing of the in-vehicle device 200 in the third embodiment will be described using FIG. In the following processing, an example of processing in which the in-vehicle device 200 presents a warning message at a position indicated by the warning information will be described.
　注意情報取得部２０８は、注意情報送信部４０８から送信された注意情報を受信したかを判定する（Ｓ７０２）。注意情報を受信したと判定された場合（Ｓ７０２：ＹＥＳ）、注意情報取得部２０８は、取得した注意情報に含まれる劣化位置情報および注意喚起メッセージを、メモリ１０６やストレージデバイス１０８等に記憶する（Ｓ７０４）。 The attention information acquisition unit 208 determines whether the attention information transmitted from the attention information transmission unit 408 has been received (S702). When it is determined that the caution information has been received (S702: YES), the caution information acquisition unit 208 stores the degradation position information and the alert message included in the acquired caution information in the memory 106, the storage device 108, and the like ( S704).
　続いて、制御部２１０は、注意情報によって示される位置に接近したか否かを判定する（Ｓ７０６）。例えば、制御部２１０は、ＧＰＳモジュール１１０２から取得される車両の現在位置情報と、Ｓ７０４の処理で記憶した劣化位置情報とを比較し、所定レベル以上に劣化したインフラストラクチャーの位置に車両が接近したかを判定することができる。具体的には、制御部２１０は、車両の現在位置情報によって示される位置が劣化位置情報によって示される位置（又は範囲）に対して所定の基準（例えば、“両者の差分が所定の閾値以下”など）を満たすか否かを判定することで、劣化位置情報によって示される位置への接近を判定することができる。劣化したインフラストラクチャーの位置に車両が接近したと判定された場合（Ｓ７０６：ＹＥＳ）、制御部２１０は、Ｓ７０４の処理で記憶した注意喚起メッセージを提示する（Ｓ７０８）。ここで、注意喚起メッセージは、例えば、「この先の路面状態にご注意ください。」といった内容であり、表示や音声の形態で提示される。 Subsequently, the control unit 210 determines whether or not the position indicated by the caution information has been approached (S706). For example, the control unit 210 compares the current position information of the vehicle acquired from the GPS module 1102 with the deteriorated position information stored in the process of S704, and the vehicle approaches the position of the infrastructure deteriorated to a predetermined level or more. Can be determined. Specifically, the control unit 210 determines that the position indicated by the current position information of the vehicle is a predetermined reference (for example, “the difference between the two is equal to or less than a predetermined threshold”). It is possible to determine the approach to the position indicated by the degraded position information. When it is determined that the vehicle has approached the position of the deteriorated infrastructure (S706: YES), the control unit 210 presents the alert message stored in the process of S704 (S708). Here, for example, the alert message has a content such as “Please pay attention to the road surface ahead” and is presented in the form of a display or sound.
　［第３実施形態の変形例］
　本実施形態の動作は、上述した例に限定されない。 [Modification of Third Embodiment]
The operation of the present embodiment is not limited to the example described above.
　例えば、情報処理装置４００は、注意喚起メッセージを含まない注意情報を送信してもよい。この場合、注意情報を受信した車載装置２００は、車両が所定レベル以上に劣化したインフラストラクチャーの位置に接近した際に、車載装置２００側で予め設定された注意喚起メッセージや警告音などを提示する。この注意喚起メッセージや警告音は、例えば、車載装置２００のストレージデバイス１０８などに予め記憶されている。また例えば、注意喚起メッセージや警告音が車載装置２００側に記憶されている場合、情報処理装置４００は、劣化位置情報に加え、注意喚起メッセージまたは警告音を識別するための識別情報を含む注意情報を生成し、車載装置２００に送信してもよい。この場合、制御部２１０は、情報処理装置４００から送信された注意情報に含まれる識別情報に基づいて、出力すべき注意喚起メッセージまたは警告音を識別することができる。 For example, the information processing apparatus 400 may transmit caution information that does not include a caution message. In this case, the in-vehicle device 200 that has received the caution information presents a warning message or a warning sound that is set in advance on the in-vehicle device 200 side when the vehicle approaches an infrastructure position that has deteriorated to a predetermined level or more. . The alert message and warning sound are stored in advance in the storage device 108 of the in-vehicle apparatus 200, for example. Further, for example, when a warning message or warning sound is stored on the in-vehicle device 200 side, the information processing apparatus 400 includes attention information including identification information for identifying the warning message or warning sound in addition to the deterioration position information. May be generated and transmitted to the in-vehicle device 200. In this case, the control unit 210 can identify the alert message or warning sound to be output based on the identification information included in the alert information transmitted from the information processing apparatus 400.
　また例えば、制御部２１０は、注意情報を受信した場合に注意喚起メッセージを提示することに代えて、車両の走行中の安全に貢献する他の処理を行うようにしてもよい。 Also, for example, the control unit 210 may perform other processing that contributes to safety while the vehicle is running, instead of presenting the alert message when the alert information is received.
　まず、車載装置２００を搭載する車両が自動運転車両であり、公知の自動運転制御技術により自動走行が可能である場合、制御部２１０は、劣化したインフラストラクチャーの位置に自動運転車両が接近した際に、当該劣化したインフラストラクチャーの位置を避けて通行するように自動運転車両を自動操舵させてもよい。例えば、車両が自動走行中であり、劣化したインフラストラクチャーの位置が片側２車線道路のうちの１車線であった場合、制御部２１０は、劣化したインフラストラクチャーが存在しない方の車線を通行するように自動運転車両を制御する。具体的には、制御部２１０は、取得した注意情報に含まれる劣化位置情報に基づく劣化したインフラストラクチャーの位置を、走行回避地点として自動運転車両の自動運転制御装置に設定させる。自動運転制御装置は、走行回避地点を回避するような走行軌道を計算し、自動運転車両の操舵を制御する。自動運転制御装置は、走行回避地点を回避する走行軌道が見つからない場合に、自動運転車両の走行速度を減速させて走行回避地点を通行するようにしてもよい。 First, when the vehicle on which the in-vehicle device 200 is mounted is an autonomous driving vehicle and can be automatically driven by a known automatic driving control technology, the control unit 210 may detect when the autonomous driving vehicle approaches the position of a deteriorated infrastructure. In addition, the self-driving vehicle may be automatically steered so as to pass while avoiding the position of the deteriorated infrastructure. For example, when the vehicle is traveling automatically and the position of the deteriorated infrastructure is one lane of the two-lane road on one side, the control unit 210 may pass the lane on which the deteriorated infrastructure does not exist. To control the autonomous driving vehicle. Specifically, the control unit 210 causes the automatic driving control device of the automatic driving vehicle to set the position of the deteriorated infrastructure based on the deterioration position information included in the acquired attention information as a travel avoidance point. The automatic driving control device calculates a traveling track that avoids the traveling avoidance point, and controls the steering of the autonomous driving vehicle. The automatic driving control device may pass the traveling avoidance point by reducing the traveling speed of the automatic driving vehicle when the traveling track avoiding the traveling avoidance point is not found.
　あるいは、車載装置２００を実現する計算機１００がナビゲーション装置である場合、制御部２１０は、当該ナビゲーション装置を、目的地までの経路を探索する際、取得した注意情報に含まれる劣化位置情報に基づく劣化したインフラストラクチャーの位置を迂回する経路を探索し、これを推奨経路として図示しない表示部に提示するように制御してもよい。このように第３実施形態では、車載装置２００は、車両の走行中の安全に貢献する各種処理を実行することができる。 Alternatively, when the computer 100 that implements the in-vehicle device 200 is a navigation device, the control unit 210 performs deterioration based on deterioration position information included in the acquired attention information when searching the navigation device for a route to the destination. It may be controlled to search for a route detouring the position of the infrastructure and present it on a display unit (not shown) as a recommended route. Thus, in 3rd Embodiment, the vehicle-mounted apparatus 200 can perform the various processes which contribute to the safety | security during driving | running | working of a vehicle.
　なお、ここまで、情報処理装置４００が、インフラストラクチャーの劣化状態のレベルが所定レベル以上と判断した場合に、注意情報を、図に例示されるような車載装置２００に送信する例を説明したが、情報処理装置４００が送信する注意情報の送信先は、図に例示されるような車載装置２００に限定されない。例えば、情報処理装置４００は、ロードノイズを集音して情報処理装置４００に送信する機能を備えず、注意情報取得部２０８、および制御部２１０を備える車載装置に対して注意情報を送信してもよい。また、情報処理装置４００は、注意情報取得部２０８を備える車載装置を搭載するインフラストラクチャー整備用の車両に対して注意情報を送信するようにしてもよい。 Heretofore, the example in which the information processing apparatus 400 transmits the caution information to the in-vehicle apparatus 200 illustrated in the figure when the information processing apparatus 400 determines that the level of the infrastructure deterioration state is equal to or higher than the predetermined level has been described. The destination of the attention information transmitted by the information processing apparatus 400 is not limited to the in-vehicle apparatus 200 illustrated in the figure. For example, the information processing apparatus 400 does not have a function of collecting road noise and transmitting it to the information processing apparatus 400, and transmits attention information to an in-vehicle apparatus including the attention information acquisition unit 208 and the control unit 210. Also good. Further, the information processing apparatus 400 may transmit the caution information to the infrastructure maintenance vehicle equipped with the in-vehicle device including the caution information acquisition unit 208.
　以上、本実施形態では、集音されたロードノイズの解析結果に基づいてインフラストラクチャーの劣化状態のレベルが所定レベル以上と判断された場合に、当該インフラストラクチャーの位置に関する情報を含む注意情報を、複数の車載装置に送信する。注意情報を受信した車載装置は、劣化したインフラストラクチャーの位置に車両が接近した場合に、車両の乗員に注意を促すための情報を提示する。これにより、劣化したインフラストラクチャーの位置に接近する車両に対して、事前に注意喚起を促すことが可能となる。 As described above, in the present embodiment, when it is determined that the level of the deterioration state of the infrastructure is equal to or higher than the predetermined level based on the analysis result of the collected road noise, the attention information including information on the position of the infrastructure is included. Send to multiple in-vehicle devices. The vehicle-mounted device that has received the caution information presents information for alerting the vehicle occupant when the vehicle approaches the position of the deteriorated infrastructure. This makes it possible to call attention in advance to a vehicle approaching the position of the deteriorated infrastructure.
　以上、図面を参照して本発明の実施形態について述べたが、これらは本発明の例示であり、上記各実施形態の組み合わせ、又は上記以外の様々な構成を採用することもできる。 As mentioned above, although embodiment of this invention was described with reference to drawings, these are illustrations of this invention, The combination of said each embodiment or various structures other than the above can also be employ | adopted.
　上記の実施形態の一部又は全部は、特に限定されないが、例えば以下の付記のようにも記載され得る。
１．
　車両の走行時に発生する音を拾う集音部と、
　前記集音部を用いて拾った音を周波数フィルタに通し、所定の周波数帯域の音を抽出するフィルタ部と、
　前記所定の周波数帯域の音を、当該音を拾った位置を示す集音位置情報と対応付けて、外部装置に送信する送信部と、
　を備える車載装置。
２．
　前記所定の周波数帯域は１ｋＨｚ以下の帯域である、
　１．に記載の車載装置。
３．
　前記車載装置を前記車両に取り付けたとき、前記集音部が前記車両の下部の路面に向くように構成されている支持部材を更に備える、
　１．または２．に記載の車載装置。
４．
　前記車載装置は、前記車両の外周部の下面に取り付け可能である、
　１．～３．のいずれか１つに記載の車載装置。
５．
　コンピュータによって実行される情報収集方法であって、
　車両の走行時に発生する音を拾う集音工程と、
　前記集音工程で拾った音を周波数フィルタに通して所定の周波数帯域の音を抽出するフ工程と、
　前記所定の周波数帯域の音を外部装置に送信する送信工程と、
　を有する情報収集方法。
６．
　コンピュータを、
　車両の走行時に発生する音を拾う集音部、
　前記集音部で拾った音を周波数フィルタに通して所定の周波数帯域の音を抽出するフィルタ部、及び、
　前記所定の周波数帯域の音を外部装置に送信する送信部、
　として機能させるためのプログラム。 A part or all of the above embodiment is not particularly limited, but can be described as, for example, the following supplementary notes.
1.
A sound collection unit that picks up sounds generated when the vehicle is running;
A filter unit that extracts a sound in a predetermined frequency band by passing the sound picked up using the sound collecting unit through a frequency filter;
A transmission unit that associates the sound of the predetermined frequency band with sound collection position information indicating a position where the sound is picked up, and transmits the sound to an external device;
A vehicle-mounted device comprising:
2.
The predetermined frequency band is a band of 1 kHz or less,
1. The in-vehicle device described in 1.
3.
When the on-vehicle device is attached to the vehicle, the sound collection unit further includes a support member configured to face a road surface below the vehicle.
1. Or 2. The in-vehicle device described in 1.
4).
The in-vehicle device can be attached to the lower surface of the outer periphery of the vehicle.
1. ~ 3. The in-vehicle device according to any one of the above.
5).
An information collection method executed by a computer,
A sound collection process for picking up sounds generated when the vehicle is running;
A step of extracting a sound of a predetermined frequency band by passing the sound picked up in the sound collecting step through a frequency filter;
A transmission step of transmitting the sound of the predetermined frequency band to an external device;
A method for collecting information.
6).
Computer
A sound collection unit that picks up sound generated when the vehicle is running,
A filter unit for extracting a sound in a predetermined frequency band by passing the sound picked up by the sound collecting unit through a frequency filter; and
A transmission unit for transmitting sound of the predetermined frequency band to an external device;
Program to function as.
　この出願は、２０１７年２月２８日に出願された日本出願特願２０１７－０３６６９４号を基礎とする優先権を主張し、その開示の全てをここに取り込む。 This application claims priority based on Japanese Patent Application No. 2017-036694 filed on Feb. 28, 2017, the entire disclosure of which is incorporated herein.

Claims (24)

  1. 　車両の走行時のロードノイズを集音する集音部と、
    　前記集音部が前記ロードノイズを集音した位置を示す集音位置情報と対応付けて、前記ロードノイズを外部装置に送信する送信部と、
    　を備える車載装置。     A sound collection unit that collects road noise when the vehicle is running;
    A transmission unit that transmits the road noise to an external device in association with sound collection position information indicating a position where the sound collection unit has collected the road noise;
    A vehicle-mounted device comprising:
  2. 　前記外部装置によって指定された位置を示す指定位置情報を取得する指定位置情報取得部を更に備え、
    　前記送信部は、前記指定位置情報によって示される位置に対応する位置で集音されたロードノイズを送信する、
    　請求項１に記載の車載装置。     A designated position information acquisition unit for acquiring designated position information indicating a position designated by the external device;
    The transmission unit transmits road noise collected at a position corresponding to the position indicated by the designated position information.
    The in-vehicle device according to claim 1.
  3. 　前記集音部は、前記ロードノイズを集音すると共に、前記集音位置情報を取得して当該ロードノイズに対応付け、
    　前記送信部は、前記集音位置情報のうち、前記指定位置情報が示す位置に対応する位置情報と対応付けられている前記ロードノイズを、前記外部装置に送信する、
    　請求項２に記載の車載装置。     The sound collection unit collects the road noise, acquires the sound collection position information, and associates with the road noise.
    The transmission unit transmits the road noise associated with position information corresponding to a position indicated by the designated position information among the sound collection position information to the external device.
    The in-vehicle device according to claim 2.
  4. 　前記ロードノイズの中からフィルタ特性に応じた周波数帯の音を抽出する周波数フィルタを更に備える、
    　請求項１～３に記載の車載装置。     A frequency filter for extracting a sound in a frequency band corresponding to a filter characteristic from the road noise;
    The in-vehicle device according to any one of claims 1 to 3.
  5. 　前記送信部は、前記ロードノイズの集音時刻を示す時刻情報を前記ロードノイズに更に対応付けて、前記外部装置に送信する、
    　請求項１～４のいずれか１項に記載の車載装置。     The transmission unit further associates time information indicating a sound collection time of the road noise with the road noise and transmits the time information to the external device.
    The in-vehicle device according to any one of claims 1 to 4.
  6. 　前記送信部は、前記ロードノイズを集音したときの環境情報を前記ロードノイズに更に対応付けて、前記外部装置に送信する、
    　請求項１～５のいずれか１項に記載の車載装置。     The transmission unit further associates environmental information when the road noise is collected with the road noise, and transmits the information to the external device.
    The in-vehicle device according to any one of claims 1 to 5.
  7. 　前記送信部は、前記車両の車種を示す車種情報を前記ロードノイズに更に対応付けて、前記外部装置に送信する、
    　請求項１～６のいずれか１項に記載の車載装置。     The transmission unit further associates vehicle type information indicating the vehicle type of the vehicle with the road noise, and transmits the vehicle type information to the external device.
    The in-vehicle device according to any one of claims 1 to 6.
  8. 　前記外部装置から、劣化していると判断されたインフラストラクチャーの位置を含む注意情報を取得する注意情報取得部を更に備える、
    　請求項１～７のいずれか１項に記載の車載装置。     A caution information acquisition unit that acquires caution information including the position of the infrastructure determined to be deteriorated from the external device.
    The in-vehicle device according to any one of claims 1 to 7.
  9. 　前記注意情報取得部により取得された注意情報に基づいて、前記車両または当該車両に搭載される装置の動作を制御する制御部を更に備える、
    　請求項８に記載の車載装置。     Based on the attention information acquired by the attention information acquisition unit, further includes a control unit for controlling the operation of the vehicle or a device mounted on the vehicle,
    The in-vehicle device according to claim 8.
  10. 　車載装置によって集音されたロードノイズを、当該ロードノイズの集音位置を示す集音位置情報と対応付けて、前記車載装置から取得する取得部と、
    　前記集音位置情報によって示される位置のインフラストラクチャーの劣化状態を、当該集音位置情報と対応付けられている前記ロードノイズを解析することによって判断する判断部と、
    　を備える情報処理装置。     The road noise collected by the in-vehicle device is associated with the sound collection position information indicating the sound collection position of the road noise and acquired from the in-vehicle device,
    A determination unit that determines the deterioration state of the infrastructure at the position indicated by the sound collection position information by analyzing the road noise associated with the sound collection position information;
    An information processing apparatus comprising:
  11. 　前記取得部は、前記車載装置から、前記ロードノイズの集音時刻を示す時刻情報を更に取得し、
    　前記判断部は、前記時刻情報に基づいて前記ロードノイズを分類し、前記時刻情報に基づく分類毎に前記ロードノイズを解析する、
    　請求項１０に記載の情報処理装置。     The acquisition unit further acquires time information indicating a sound collection time of the road noise from the in-vehicle device,
    The determination unit classifies the road noise based on the time information, and analyzes the road noise for each classification based on the time information.
    The information processing apparatus according to claim 10.
  12. 　前記取得部は、前記車載装置から、前記ロードノイズの集音時の環境情報を更に取得し、
    　前記判断部は、前記環境情報に基づいて前記ロードノイズを分類し、前記環境情報に基づく分類毎に前記ロードノイズを解析する、
    　請求項１０または１１に記載の情報処理装置。     The acquisition unit further acquires environmental information at the time of sound collection of the road noise from the in-vehicle device,
    The determination unit classifies the road noise based on the environmental information, and analyzes the road noise for each classification based on the environmental information.
    The information processing apparatus according to claim 10 or 11.
  13. 　前記取得部は、前記車載装置から、当該車載装置が配置されている車両の車種を示す車種情報を更に取得し、
    　前記判断部は、前記車種情報に基づいて前記ロードノイズを分類し、前記車種情報に基づく分類毎に前記ロードノイズを解析する、
    　請求項１０～１２いずれか１項に記載の情報処理装置。     The acquisition unit further acquires vehicle type information indicating a vehicle type of a vehicle in which the in-vehicle device is arranged from the in-vehicle device,
    The determination unit classifies the road noise based on the vehicle type information, and analyzes the road noise for each classification based on the vehicle type information.
    The information processing apparatus according to any one of claims 10 to 12.
  14. 　位置の指定入力を受け付け、当該指定入力の位置を示す指定位置情報を前記車載装置に対して送信する指定位置送信部を更に備える、
    　請求項１０～１３のいずれか１項に記載の情報処理装置。     Further comprising a designated position transmitting unit that accepts a designated input of a position and transmits designated position information indicating the position of the designated input to the in-vehicle device;
    The information processing apparatus according to any one of claims 10 to 13.
  15. 　前記指定位置送信部は、前記判断部による解析結果の履歴データに基づいて、前記指定位置情報を生成する、
    　請求項１４に記載の情報処理装置。     The designated position transmission unit generates the designated position information based on the history data of the analysis result by the determination unit;
    The information processing apparatus according to claim 14.
  16. 　前記判断部は、特定の時間帯における前記ロードノイズの解析結果が、他の時間帯における前記ロードノイズの解析結果と異なる場合、前記インフラストラクチャーの劣化状態を判断する要素から除外する、
    　請求項１０～１５のいずれか１項に記載の情報処理装置。     The determination unit, when the analysis result of the road noise in a specific time zone is different from the analysis result of the road noise in another time zone, is excluded from the elements that determine the deterioration state of the infrastructure,
    The information processing apparatus according to any one of claims 10 to 15.
  17. 　前記判断部は、基準ノイズと前記ロードノイズとの対比結果を用いて、前記インフラストラクチャーの劣化状態を判断する、
    　請求項１０～１６のいずれか１項に記載の情報処理装置。     The determination unit determines a deterioration state of the infrastructure using a comparison result between reference noise and the road noise.
    The information processing apparatus according to any one of claims 10 to 16.
  18. 　前記判断部は、前記ロードノイズよりも過去に集音されたロードノイズであって、前記集音位置が等しい前記過去に集音されたロードノイズを、前記基準ノイズとして用いる、
    　請求項１７に記載の情報処理装置。     The determination unit is a road noise collected in the past than the road noise, and the road noise collected in the past with the same sound collection position is used as the reference noise.
    The information processing apparatus according to claim 17.
  19. 　前記判断部は、前記ロードノイズと、当該ロードノイズよりも第１の時間前に集音された第１の過去のロードノイズとを比較すると共に、前記ロードノイズと、前記第１の時間よりも前の時間である第２の時間前に集音された第２の過去のロードノイズとを比較することによって、前記インフラストラクチャーの劣化状態を判断する、
    　請求項１８に記載の情報処理装置。     The determination unit compares the road noise with a first past road noise collected before a first time before the road noise, and moreover than the road noise and the first time. Determining a deterioration state of the infrastructure by comparing with a second past road noise collected before a second time which is a previous time;
    The information processing apparatus according to claim 18.
  20. 　前記判断部により前記インフラストラクチャーの劣化状態が所定のレベルより劣化していると判断された場合に、前記インフラストラクチャーの位置に関する情報を含む注意情報を、複数の車両の車載装置に送信する注意情報送信部を更に備える、
    請求項１０～１９のいずれか１項に記載の情報処理装置。     When the determination unit determines that the deterioration state of the infrastructure is deteriorated from a predetermined level, attention information including information on the position of the infrastructure is transmitted to the in-vehicle devices of a plurality of vehicles. A transmission unit;
    The information processing apparatus according to any one of claims 10 to 19.
  21. 　コンピュータによって実行される情報収集方法であって、
    　車両の走行時のロードノイズを集音する集音工程と、
    　前記ロードノイズの集音位置を示す集音位置情報と対応付けて、前記ロードノイズを外部装置に送信する送信工程と、
    　を有する情報収集方法。     An information collection method executed by a computer,
    A sound collection process for collecting road noise when the vehicle is running;
    A transmission step of transmitting the road noise to an external device in association with the sound collection position information indicating the sound collection position of the road noise;
    A method for collecting information.
  22. 　コンピュータによって実行されるインフラストラクチャーの劣化判断方法であって、
    　車載装置によって集音されたロードノイズを、当該ロードノイズの集音位置を示す集音位置情報と対応付けて、前記車載装置から取得する取得工程と、
    　前記集音位置情報によって示される位置のインフラストラクチャーの劣化状態を、当該集音位置情報と対応付けられている前記ロードノイズを解析することによって判断する判断工程と、
    　を有するインフラストラクチャーの劣化判断方法。     A method for judging deterioration of infrastructure executed by a computer,
    The road noise collected by the in-vehicle device is associated with the sound collection position information indicating the sound collection position of the road noise and acquired from the in-vehicle device, and
    A determination step of determining the deterioration state of the infrastructure at the position indicated by the sound collection position information by analyzing the road noise associated with the sound collection position information;
    A method for judging deterioration of infrastructure having
  23. 　コンピュータを、
    　車両の走行時のロードノイズを集音する集音手段、及び、
    　前記ロードノイズの集音位置を示す集音位置情報と対応付けて、前記ロードノイズを外部装置に送信する送信手段、
    　として機能させるためのプログラム。     Computer
    Sound collecting means for collecting road noise during traveling of the vehicle, and
    Transmission means for transmitting the road noise to an external device in association with the sound collection position information indicating the sound collection position of the road noise;
    Program to function as.
  24. 　コンピュータを、
    　車載装置によって集音されたロードノイズを、当該ロードノイズの集音位置を示す集音位置情報と対応付けて、前記車載装置から取得する取得手段、及び、
    　前記集音位置情報によって示される位置のインフラストラクチャーの劣化状態を、当該集音位置情報と対応付けられている前記ロードノイズを解析することによって判断する判断手段、
    　として機能させるためのプログラム。     Computer
    The road noise collected by the in-vehicle device is associated with the sound collection position information indicating the sound collection position of the road noise and is acquired from the in-vehicle device, and
    Judgment means for judging the deterioration state of the infrastructure at the position indicated by the sound collection position information by analyzing the road noise associated with the sound collection position information;
    Program to function as.
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