WO2022215576A1 - 車載装置、プログラム及び情報処理方法 - Google Patents
車載装置、プログラム及び情報処理方法 Download PDFInfo
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- WO2022215576A1 WO2022215576A1 PCT/JP2022/014986 JP2022014986W WO2022215576A1 WO 2022215576 A1 WO2022215576 A1 WO 2022215576A1 JP 2022014986 W JP2022014986 W JP 2022014986W WO 2022215576 A1 WO2022215576 A1 WO 2022215576A1
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- vehicle device
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- 230000010365 information processing Effects 0.000 title claims description 7
- 238000003672 processing method Methods 0.000 title claims description 7
- 238000004891 communication Methods 0.000 claims abstract description 60
- 238000002405 diagnostic procedure Methods 0.000 claims abstract description 48
- 238000001514 detection method Methods 0.000 claims abstract description 43
- 238000000034 method Methods 0.000 claims abstract description 31
- 230000008569 process Effects 0.000 claims abstract description 31
- 238000003745 diagnosis Methods 0.000 abstract description 13
- 230000000414 obstructive effect Effects 0.000 abstract description 4
- 230000002159 abnormal effect Effects 0.000 description 6
- 230000004044 response Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 239000004065 semiconductor Substances 0.000 description 3
- 230000005856 abnormality Effects 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
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- 230000005764 inhibitory process Effects 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
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- 238000012986 modification Methods 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/023—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for transmission of signals between vehicle parts or subsystems
- B60R16/0231—Circuits relating to the driving or the functioning of the vehicle
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
- B60W50/02—Ensuring safety in case of control system failures, e.g. by diagnosing, circumventing or fixing failures
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
- B60W50/02—Ensuring safety in case of control system failures, e.g. by diagnosing, circumventing or fixing failures
- B60W50/0205—Diagnosing or detecting failures; Failure detection models
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/22—Safety or indicating devices for abnormal conditions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
- B60W50/04—Monitoring the functioning of the control system
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/22—Safety or indicating devices for abnormal conditions
- F02D2041/228—Warning displays
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/24—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means
- F02D41/2403—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using essentially up/down counters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/24—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means
- F02D41/26—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using computer, e.g. microprocessor
- F02D41/266—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using computer, e.g. microprocessor the computer being backed-up or assisted by another circuit, e.g. analogue
-
- G—PHYSICS
- G07—CHECKING-DEVICES
- G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
- G07C5/00—Registering or indicating the working of vehicles
- G07C5/08—Registering or indicating performance data other than driving, working, idle, or waiting time, with or without registering driving, working, idle or waiting time
- G07C5/0808—Diagnosing performance data
Definitions
- the present disclosure relates to an in-vehicle device, a program, and an information processing method.
- This application claims priority based on Japanese Application No. 2021-066074 filed on April 8, 2021, and incorporates all the descriptions described in the Japanese Application.
- a vehicle is equipped with a body ECU, which is an in-vehicle ECU that controls body devices such as a wiper drive device, lighting devices inside and outside the vehicle, door lock devices, power windows, etc. (for example, patent Reference 1).
- the wiper drive device of Patent Document 1 includes an in-vehicle ECU (body ECU) and is driven by a control program applied to the in-vehicle ECU.
- An in-vehicle device is an in-vehicle device that is mounted in a vehicle and includes a driving unit, and includes: a control unit that controls the driving unit; and communication for communicating with an in-vehicle ECU mounted in the vehicle. and, when performing diagnostic processing of the driving unit, the control unit detects a hindrance event that hinders the diagnostic processing, and transmits a detection result notification indicating that the hindrance event has been detected to the communication unit. output to the in-vehicle ECU via the unit.
- FIG. 1 is a schematic diagram illustrating the configuration of an in-vehicle system including an in-vehicle device according to Embodiment 1;
- FIG. 2 is a block diagram illustrating an internal configuration of an in-vehicle device;
- FIG. It is explanatory drawing which illustrated the processing sequence by an in-vehicle apparatus and in-vehicle ECU.
- 4 is a flowchart illustrating processing of a control unit of an in-vehicle device;
- 10 is a flowchart illustrating processing of a control unit of an in-vehicle device according to Embodiment 2 (communication interruption);
- Patent Document 1 has a problem that no consideration is given to the diagnostic processing of the driving parts included in the driving device.
- the purpose of the present disclosure is to provide an in-vehicle device or the like that can efficiently respond based on its own diagnostic processing.
- An in-vehicle device is an in-vehicle device that is mounted in a vehicle and includes a driving unit, and that communicates with a control unit that controls the driving unit and an in-vehicle ECU mounted in the vehicle. and a communication unit for diagnosing the driving unit, and when detecting an obstruction event that hinders the diagnosis process, the control unit notifies the detection result indicating that the obstruction event has been detected. is output to the in-vehicle ECU via the communication unit.
- the in-vehicle device mounted in the vehicle includes a driving section, a control section, and a communication section, and communicates with the in-vehicle ECU mounted in the vehicle via the communication section.
- the control unit performs diagnostic processing for the drive unit, and outputs (transmits) a diagnosis result, such as whether the drive unit is normal or abnormal, to the in-vehicle ECU via the communication unit. Furthermore, in performing the diagnostic processing, if an obstacle event that hinders the diagnostic processing is detected, the control unit outputs a detection result notification indicating that the obstacle event has been detected to the in-vehicle ECU via the communication unit.
- the control unit can output a detection result notification indicating that the obstruction event has been detected to the in-vehicle ECU.
- the in-vehicle device control unit
- the obstruction event includes an event in which the diagnostic process is interrupted.
- the inhibitory event detected by the control unit includes an event in which the diagnostic process is interrupted, even if the diagnostic process is interrupted after the diagnostic process is started, By outputting the detection result notification shown to the in-vehicle ECU, it is possible to efficiently take measures based on the diagnostic processing of the own device.
- control unit sends a detection result notification indicating that the hindrance event has been detected when the diagnostic process is continuously interrupted a predetermined number of times or more. Output to the in-vehicle ECU.
- the control unit when the diagnostic process is interrupted, the control unit counts the number of consecutive interruptions by, for example, incrementing a counter value indicating the interruption by one. value) is stored in an accessible storage area such as a storage unit mounted on the device itself.
- the control unit When the number of times (counter value) exceeds a predetermined number of times, such as 100 times, that is, when the predetermined number of times is reached, the control unit notifies the detection result indicating that an obstruction event has been detected. is output to the in-vehicle ECU.
- the control unit In counting the number of times the diagnostic process is continuously interrupted, if the diagnostic process is completed without being interrupted, the control unit resets the counter value that is incremented by one according to the number of times the diagnostic process is interrupted. For example, it may be returned to an initial value of 0.
- the hindrance event will occur.
- the control unit does not output the detection result notification to the on-vehicle ECU until the number of consecutive interruptions reaches a predetermined number of times, that is, when the number of consecutive interruptions is less than the predetermined number of times. Therefore, excessive output of the detection result notification can be suppressed.
- the control unit when the ignition power of the vehicle is turned off, the control unit performs diagnostic processing of the drive unit, and when the ignition power is turned on, , interrupts a running diagnostic process.
- the vehicle is provided with an ignition switch (IG switch) for starting and stopping the vehicle.
- IG switch ignition switch
- the ignition power supply of the vehicle is turned on or off. can be switched off from
- the control unit acquires an off signal (sleep signal) indicating that the vehicle has been turned off from the in-vehicle ECU via the communication unit, and drives according to the off signal. start diagnostic processing.
- the control unit outputs an ON signal (wakeup signal) to indicate that the ignition power source is turned on when, for example, an IG switch is pressed by an operator of the vehicle during execution of diagnostic processing of the driving unit.
- the control unit executes and interrupts diagnostic processing according to the operation of the IG switch that starts and stops the vehicle.
- the obstruction event includes an event in which communication between the control unit and the in-vehicle ECU is interrupted for a predetermined period or longer.
- the diagnostic sequence of the drive unit by the control unit includes diagnostic processing of the drive unit in its own device, and transmission processing of outputting (transmitting) the result of the diagnostic processing (diagnosis processing result) to the in-vehicle ECU.
- diagnostic processing of the drive unit in its own device
- transmission processing of outputting (transmitting) the result of the diagnostic processing (diagnosis processing result) to the in-vehicle ECU.
- the in-vehicle ECU when the in-vehicle ECU outputs a signal indicating the start of diagnostic processing to the in-vehicle device, communication with the in-vehicle ECU and the in-vehicle device is interrupted, and it is assumed that the in-vehicle device cannot acquire (receive) the signal. be done. Therefore, even in the case of the disconnection state, such an event (interruption event) is included in the obstruction event, and a detection result notification indicating that the obstruction event has been detected is sent to the in-vehicle ECU via the communication unit. , it is possible to efficiently take measures based on the diagnostic processing of the own device.
- control unit outputs a detection result notification indicating that the obstruction event has been detected to the in-vehicle ECU as a failure notification of the drive unit.
- the control unit performs diagnostic processing of the driving unit included in the device based on a predetermined trigger such as when the IG switch is turned off, and as a result of the diagnostic processing, the driving unit outputs, for example, When an on-failure or the like occurs and is diagnosed as abnormal, a failure notification is output (transmitted) to the in-vehicle ECU via the communication unit.
- the control unit also outputs to the in-vehicle ECU, as a failure notification of the driving unit, a detection result notification indicating that an obstruction event has been detected in performing diagnostic processing for the driving unit.
- a detection result notification is output to the in-vehicle ECU indicating that an event that interferes with the diagnostic processing has been detected. It is possible to simplify the form of communication between the in-vehicle device and the in-vehicle ECU and perform efficient communication processing.
- the failure notification output to the in-vehicle ECU includes an error code
- the control unit detects an obstruction event that obstructs the diagnosis process.
- the error code is made different from the error code detected when the diagnostic process is completed without being interrupted.
- control unit displays a detection result notification indicating that a hindrance event such as interruption of diagnostic processing is continuously detected, and when indicating an actual failure such as an on-failure of the drive unit. , for example, the error code included in the failure notification is made different. In this way, by changing the error code included in the failure notification according to the reason for outputting the failure notification (detection result notification), the in-vehicle ECU can be notified according to the failure state of the in-vehicle device. can be done.
- a program detects an obstruction event that inhibits the diagnostic process when a computer that controls the actuator performs diagnostic processing of the drive unit.
- a process of outputting a detection result notification indicating that to the in-vehicle ECU communicably connected to the computer is executed.
- the computer can be operated as an in-vehicle device that can efficiently respond based on its own diagnostic processing.
- An information processing method is an information processing method that is executed by a computer that controls a drive unit, and includes: If detected, the computer is caused to execute a process of outputting a detection result notification indicating that the obstruction event has been detected to an in-vehicle ECU communicably connected to the computer.
- FIG. 1 is a schematic diagram illustrating the configuration of an in-vehicle system S including an in-vehicle device 1 and the like according to the first embodiment.
- FIG. 2 is a block diagram illustrating the internal configuration of the in-vehicle device 1. As shown in FIG.
- the in-vehicle system S includes an in-vehicle device 1 and an in-vehicle ECU 2 that are communicably connected to each other via a communication line 5 . .
- the in-vehicle device 1 performs control to turn on or off the driving unit 14 included in the device based on a control signal output (transmitted) from the in-vehicle ECU 2, for example, and controls the in-vehicle load 3 connected to the device. It supplies or cuts off the power output from the power supply device 4 .
- the in-vehicle ECU 2 is communicably connected to an IG switch 21 (ignition switch) for starting or stopping the vehicle C, and based on a signal output from the IG switch 21, the in-vehicle device 1 A signal (start: sleep signal, interruption: wakeup signal) for instructing the start or interruption of the diagnostic processing of the driving unit 14 included in the output (transmits).
- IG switch 21 ignition switch
- start: sleep signal, interruption: wakeup signal for instructing the start or interruption of the diagnostic processing of the driving unit 14 included in the output (transmits).
- the power supply device 4 is, for example, a secondary battery such as a lead battery, an alternator, or a lithium battery, and is a power source for the onboard load 3 mounted on the vehicle C.
- the in-vehicle load 3 is, for example, an actuator such as a lamp device or a motor, and is driven by electric power supplied from the power supply device 4 via the drive section 14 of the in-vehicle device 1 .
- the in-vehicle device 1 includes a control unit 11, a storage unit 12, a communication unit 13, and a drive unit 14.
- the control unit 11 is configured by a CPU (Central Processing Unit) or MPU (Micro Processing Unit) or the like, reads and executes programs and data stored in the storage unit 12, and controls the on/off of the drive unit 14, the drive unit Various control processes including 14 diagnostic processes are performed.
- the control unit 11 may be configured by FPGA (field-programmable gate array), SoC (System-on-a-chip), or ASIC (application specific integrated circuit).
- the storage unit 12 is composed of a volatile memory element such as RAM (Random Access Memory) or a non-volatile memory element such as ROM (Read Only Memory), EEPROM (Electrically Erasable Programmable ROM), or flash memory.
- the storage unit 12 stores programs and data for executing the programs. These programs and the like may be stored programs and the like read from a recording medium readable by the in-vehicle ECU 2 . Alternatively, these programs may be downloaded from an external computer (not shown) connected to a communication network (not shown) and stored in the storage unit 12 .
- the storage unit 12 stores a counter value, which will be described later.
- the communication unit 13 is a communication interface compatible with LIN (Local Interconnect Network), CAN (Controller Area Network), or Ethernet (registered trademark) protocols.
- the control unit 11 communicates with the in-vehicle ECU 2 via the communication unit 13 using a predetermined protocol such as LIN.
- the drive unit 14 is a semiconductor switch such as an FET (Field effect transistor) or an IGBT (Insulated Gate Bipolar Transistor), and is turned on or off based on the drive signal from the control unit 11.
- FET Field effect transistor
- IGBT Insulated Gate Bipolar Transistor
- the drive unit 14 is a semiconductor switch such as an FET, but is not limited to this, and may be a mechanical relay, a drive circuit, a motor mechanism, or the like. In the drawings, etc. of the present embodiment, the drive unit 14 is described as a semiconductor switch (FET), which is an example thereof.
- FET semiconductor switch
- the control unit 11 By executing the program stored in the storage unit 12, the control unit 11 functions as a diagnostic processing unit that performs diagnostic processing (diagnosis processing) of the driving unit 14.
- the control unit 11 functioning as a diagnostic processing unit starts diagnostic processing of the driving unit 14 in response to a sleep signal transmitted from the in-vehicle ECU 2, for example.
- the diagnostic process detects, for example, an ON failure (short-circuit failure) or an OFF failure (open failure) of the drive unit 14, and determines whether or not there is an abnormality in the drive unit 14 based on the detection result.
- the control unit 11 determines that the drive unit 14 is abnormal based on the result of the diagnostic processing of the drive unit 14, the control unit 11 outputs a failure notification to the in-vehicle ECU 2.
- control unit 11 when the control unit 11 detects an obstruction event that obstructs the diagnostic processing, such as the diagnostic processing being interrupted for some reason, the control unit 11 sends a detection result notification indicating that the obstruction event has been detected via the communication unit 13. output to the in-vehicle ECU 2. Details of the processing related to the detection result notification will be described later.
- the in-vehicle ECU 2 includes a control unit (not shown), a storage unit (not shown), and a communication unit (not shown), similar to the in-vehicle device 1. be.
- the in-vehicle ECU 2 is, for example, a body ECU that controls the entire vehicle C, an engine ECU that controls an actuator such as an engine or a motor, or the like.
- the in-vehicle ECU 2 is communicably connected to the IG switch 21, and when the IG switch 21 is pressed and the ignition power source of the vehicle C is turned on from off, the in-vehicle ECU 2 outputs a wakeup signal to the in-vehicle device 1 to The device 1 is caused to transition from the sleep state to the wake-up state.
- the in-vehicle ECU 2 When the IG switch 21 is pressed and the ignition power source of the vehicle C is turned off, the in-vehicle ECU 2 outputs a sleep signal to the in-vehicle device 1 to cause the in-vehicle device 1 to transition from the activation state to the sleep state.
- the in-vehicle ECU 2 and the in-vehicle device 1 periodically perform polling communication, and the in-vehicle device 1 determines whether the communication between the in-vehicle ECU 2 and the in-vehicle device 1 is normal or abnormal. determine whether
- FIG. 3 is an explanatory diagram exemplifying a processing sequence by the in-vehicle device 1 and the in-vehicle ECU 2.
- FIG. The processes of the in-vehicle device 1 and the in-vehicle ECU 2 in this embodiment are triggered by turning on or off the IG switch 21, for example.
- the in-vehicle device 1 and the in-vehicle ECU 2 periodically perform polling communication, for example, and the in-vehicle device 1 determines that the communication between the in-vehicle device 1 and the in-vehicle ECU 2 is normal based on the response from the in-vehicle ECU 2 to the polling communication. or an abnormality leading to an unconnected state.
- the in-vehicle device 1 determines that communication between the in-vehicle device 1 and the in-vehicle ECU 2 is interrupted when communication between the in-vehicle device 1 and the in-vehicle ECU 2 becomes impossible for a predetermined period of time such as one second. There may be.
- the in-vehicle ECU 2 acquires an off signal (ignition power off) output from the IG switch 21 (S01).
- the in-vehicle ECU 2 outputs (transmits) a sleep signal to the in-vehicle device 1 based on the acquired OFF signal (S02).
- the in-vehicle ECU 2 acquires an off signal output from the IG switch 21 directly or indirectly communicably connected to its own ECU, that is, a signal for turning off the ignition power supply, and generates a sleep signal according to the off signal. It outputs (transmits) the signal to the in-vehicle device 1 .
- the in-vehicle device 1 starts diagnostic processing for the drive unit 14 based on the acquired sleep signal (S03). Based on the sleep signal acquired from the vehicle ECU 2 via the communication unit 13, the in-vehicle device 1 starts diagnostic processing of the driving unit 14 included in the own device.
- the in-vehicle device 1 outputs (transmits) the result of the diagnostic process (diagnostic process result) to the in-vehicle ECU 2 (S04).
- a series of processes from the start of the diagnostic process to the output of the result of the diagnostic process (diagnostic process result) to the in-vehicle ECU 2 are performed by the in-vehicle device 1 as a diagnostic process sequence.
- the in-vehicle device 1 When the in-vehicle device 1 normally completes diagnostic processing and output of diagnostic processing results to the in-vehicle ECU 2 (diagnostic processing sequence), the in-vehicle device 1 resets (initializes) a counter value that counts (increments) when an obstruction event is detected. ) (S05).
- the counter value is stored, for example, in a storage area accessible from the control unit 11, such as the storage unit 12 mounted on the in-vehicle device 1, and is counted (incremented) and increased when an obstruction event is detected.
- the value is initialized (reset) to a value such as 0 when the diagnostic processing sequence is successfully completed, as described above.
- the counter value becomes the number of times the diagnostic processing has been interrupted continuously (the number of continuous interruptions), that is, the hindrance event that hinders the diagnostic processing. is detected continuously (the number of consecutive occurrences of inhibition events).
- the processing from S01 to S05 indicates the case where the diagnostic processing has ended (completed) normally. Below, the processing after S06 shows the case where the diagnostic processing is interrupted.
- the in-vehicle ECU 2 acquires an off signal (ignition power off) output from the IG switch 21 (S06).
- the in-vehicle ECU 2 outputs (transmits) a sleep signal to the in-vehicle device 1 based on the acquired OFF signal (S07).
- the in-vehicle device 1 starts diagnostic processing of the drive unit 14 based on the acquired sleep signal (S08).
- the processing from S06 to S08 is the same processing as from S01 to S03.
- the in-vehicle ECU 2 acquires an ON signal (ignition power ON) output from the IG switch 21 (S09).
- the in-vehicle ECU 2 outputs (transmits) a wakeup signal to the in-vehicle device 1 based on the acquired ON signal (S10).
- the in-vehicle ECU 2 acquires an ON signal output from the IG switch 21 that is directly or indirectly communicably connected to its own ECU, that is, a signal for turning on the ignition power supply, and generates a wakeup signal according to the ON signal. It outputs (transmits) the signal to the in-vehicle device 1 .
- the in-vehicle device 1 interrupts the diagnostic processing of the drive unit 14 based on the acquired wakeup signal (S11).
- the in-vehicle device 1 acquires (receives) a wakeup signal output from the in-vehicle ECU 2 while the diagnostic process of the driving unit 14 is being performed, the diagnostic process being performed is interrupted.
- the in-vehicle device 1 When the in-vehicle device 1 interrupts the diagnosis process, it increments the counter value indicating the number of consecutive occurrences of the obstruction event by one (increment process) (S12).
- the execution of the processing for increasing the counter value by one (increment processing) is not limited to when the diagnostic processing is interrupted, but when it is determined that the communication between the in-vehicle device 1 and the in-vehicle ECU 2 is in a disconnected state. may also execute the increment process.
- the obstruction event that obstructs the diagnostic process may include interruption of the diagnostic process and a state of communication interruption between the in-vehicle device 1 and the in-vehicle ECU 2 .
- the in-vehicle device 1 When the counter value reaches the predetermined number of times, the in-vehicle device 1 outputs a detection result notification indicating that the obstruction event has been continuously detected to the in-vehicle ECU 2 as a failure notification of the drive unit 14 (S13).
- the predetermined number of times which is the threshold for the counter value, is stored in the storage unit 12 of the in-vehicle device 1 as, for example, 100 times.
- the in-vehicle device 1 When the counter value reaches a predetermined number of times, that is, when the counter value is equal to or greater than the predetermined number of times, the in-vehicle device 1 outputs a detection result notification to the in-vehicle ECU 2 indicating that the hindrance event has been continuously detected.
- the in-vehicle device 1 may output the detection result notification to the in-vehicle ECU 2 as a failure notification of the drive unit 14 .
- the failure notification may be a detection result notification indicating that a hindrance event such as interruption of diagnostic processing has been detected continuously, or an actual failure such as an on-failure of the drive unit 14.
- the detection result The error code included in the notification (failure notification) may be different. That is, the control unit 11 of the in-vehicle device 1 starts diagnostic processing for the driving unit 14, and when the diagnostic processing is completed without being hindered, the actual failure such as an on-failure of the driving unit 14 is detected as a result of the diagnosis. Assume that the error code when it is detected is 01, for example.
- the control unit 11 of the in-vehicle device 1 sets the error code to 99, for example, when an obstructive event such as interruption of the started diagnostic process is continuously detected.
- an obstructive event such as interruption of the started diagnostic process is continuously detected.
- FIG. 4 is a flowchart illustrating the processing of the control unit 11 of the in-vehicle device 1.
- the control unit 11 of the in-vehicle device 1 performs the following processing based on a signal output from the in-vehicle ECU 2 in response to the operation of an IG switch 21 (ignition switch) for starting or stopping the vehicle C, for example.
- IG switch 21 ignition switch
- the control unit 11 of the in-vehicle device 1 determines whether or not a signal instructing the start of diagnostic processing of the drive unit 14 has been acquired (S101).
- the control unit 11 of the in-vehicle device 1 determines whether or not a signal, such as a sleep signal output from the in-vehicle ECU 2, for instructing the start of diagnostic processing of the drive unit 14 has been acquired.
- a signal such as a sleep signal output from the in-vehicle ECU 2
- the control unit 11 of the in-vehicle device 1 performs loop processing to execute the processing of S101 again. 1 continues standby processing for the signal output from 1.
- the control unit 11 of the in-vehicle device 1 executes diagnostic processing of the driving unit 14 (S102).
- the vehicle-mounted ECU 2 outputs a signal, such as a sleep signal, for instructing the start of diagnosis processing
- the control unit 11 of the vehicle-mounted device 1 starts the diagnosis processing of the drive unit 14 in response to the sleep signal.
- the in-vehicle device 1 enters a state in which the diagnostic process for the drive unit 14 is being executed.
- the control unit 11 of the in-vehicle device 1 determines whether or not an obstruction event that obstructs diagnostic processing has occurred (S103). The control unit 11 of the in-vehicle device 1 determines whether or not an obstruction event that obstructs the diagnostic process has occurred while the diagnostic process of the drive unit 14 is being executed.
- a hindrance event that hinders the diagnosis process is interruption of the diagnosis process due to a wakeup signal output from the in-vehicle ECU 2, for example.
- Diagnosis processing includes, for example, a predetermined processing sequence for diagnosing the presence or absence of on-failures and off-failures in the drive unit 14 such as FETs.
- the control unit 11 of the in-vehicle device 1 determines that the diagnostic process is completed when the process sequence is executed to the end.
- the control unit 11 of the in-vehicle device 1 monitors the progress of the processing sequence at a predetermined cycle, and detects a completion signal or the like that is output when the processing sequence has been executed to the end, thereby performing diagnostic processing. may be determined to have been completed.
- the diagnostic process is being executed, and the controller 11 of the in-vehicle device 1 continues the diagnostic process (S102). That is, the control unit 11 of the in-vehicle device 1 continues the process of periodically determining whether or not the wakeup signal is output from the in-vehicle ECU 2 while the drive unit 14 is being diagnosed.
- the control unit 11 of the in-vehicle device 1 When the diagnostic process is completed (S1031: YES), the control unit 11 of the in-vehicle device 1 outputs the diagnostic process result to the in-vehicle ECU 2 (S1032).
- the control unit 11 of the in-vehicle device 1 completes the diagnostic processing for the driving unit 14 normally and determines that the driving unit 14 is abnormal based on the result of the diagnostic processing, the control unit 11 sends a failure notification (diagnostic processing result) to the vehicle. Output to ECU2.
- the control unit 11 of the in-vehicle device 1 initializes a counter value indicating the number of consecutive occurrences of obstruction events (S1033).
- the control unit 11 of the in-vehicle device 1 initializes the counter value stored in the storage unit 12 to, for example, "0". That is, the counter value is reset when the diagnostic process is successfully completed.
- the control unit 11 of the in-vehicle device 1 suspends diagnostic processing (S104).
- the obstruction event is, for example, interruption of the diagnostic process due to the wakeup signal output from the in-vehicle ECU 2.
- the control unit 11 of the in-vehicle device 1 acquires (receives) the wakeup signal, the diagnostic process being executed suspend.
- the control unit 11 of the in-vehicle device 1 increments the counter value indicating the number of consecutive occurrences of the obstruction event by one (increment processing) (S105).
- the control unit 11 of the in-vehicle device 1 increments the counter value stored in the storage unit 12 by one (increment processing).
- the control unit 11 of the in-vehicle device 1 determines whether or not the counter value is equal to or greater than a predetermined number of times (S106).
- the predetermined number of times which is the threshold for the counter value, is stored in the storage unit 12 of the in-vehicle device 1 as, for example, 100 times. It is determined whether or not it has reached
- the control unit 11 of the in-vehicle device 1 If the counter value is equal to or greater than the predetermined number of times (S106: YES), the control unit 11 of the in-vehicle device 1 outputs a detection result notification to the in-vehicle ECU 2 indicating that the obstruction event has been continuously detected (S107). When the counter value is equal to or greater than the predetermined number of times, the control unit 11 of the in-vehicle device 1 outputs to the in-vehicle ECU 2 a detection result notification indicating that the interruption of diagnostic processing, which is an obstructive event, has been performed continuously for a predetermined number of times or more. .
- the control unit 11 of the in-vehicle device 1 may output the detection result notification to the in-vehicle ECU 2 as a failure notification of the drive unit 14 .
- control unit 11 of the in-vehicle device 1 terminates the series of processes in this flowchart after executing S107 or after executing S1033.
- control unit 11 of the in-vehicle device 1 may perform a loop process to perform the process of S101 again after executing these processes.
- FIG. 5 is a flowchart illustrating processing of the control unit 11 of the in-vehicle device 1 according to the second embodiment (communication interruption).
- the control unit 11 of the in-vehicle device 1 for example, based on the signal output from the in-vehicle ECU 2 in response to the operation of the IG switch 21 (ignition switch) that starts or stops the vehicle C, performs the following operations. process.
- the control unit 11 of the in-vehicle device 1 performs the processing from S201 to S206 or S2033 in the same manner as the processing from S101 to S106 or S1033 of the first embodiment.
- the control unit 11 of the in-vehicle device 1 determines whether communication with the in-vehicle ECU 2 has been interrupted (S2011).
- the control unit 11 of the in-vehicle device 1 performs, for example, periodic polling communication with the in-vehicle ECU 2 via the communication unit 13 .
- the control unit 11 of the in-vehicle device 1 determines whether the communication between the in-vehicle device 1 and the in-vehicle ECU 2 is normal or abnormal (no communication) based on the response from the in-vehicle ECU 2 to the polling communication. judge.
- the control unit 11 of the in-vehicle device 1 when the state in which the communication between the in-vehicle device 1 and the in-vehicle ECU 2 is interrupted continues for a predetermined period of time or longer, such as one second or more, allows the communication between the in-vehicle device 1 and the in-vehicle ECU 2 to continue. It may be determined that communication is interrupted.
- the control unit 11 of the in-vehicle device 1 may generate subprocesses or execute the processes of S201 and S2011 as parallel processes by multithreading, for example.
- the control unit 11 of the in-vehicle device 1 executes the process of S2011 again. , loop processing. That is, the control unit 11 of the in-vehicle device 1 continues to determine whether communication between the in-vehicle device 1 and the in-vehicle ECU 2 succeeds or fails using polling communication with the in-vehicle ECU 2 .
- the control unit 11 of the in-vehicle device 1 increments (increments) the counter value indicating the number of consecutive occurrences of obstruction events by one (S2012).
- the control unit 11 of the in-vehicle device 1 increments the counter value stored in the storage unit 12 by one (increment processing), as in the processing S105 (S205) of the first embodiment. That is, the counter value incremented in S205 and the counter value incremented in S2012 are the same counter value (counter value defined by the same variable).
- the control unit 11 of the in-vehicle device 1 determines whether or not the counter value is equal to or greater than a predetermined number of times (S2013).
- the control unit 11 of the in-vehicle device 1 performs the process of S2013 in the same manner as the process S106 (S206) of the first embodiment. If the counter value is not equal to or greater than the predetermined number of times (S2013: NO), that is, if the counter value is less than the predetermined number of times, the control unit 11 of the in-vehicle device 1 performs loop processing to execute the processing of S2011 again.
- the control unit 11 of the in-vehicle device 1 If the counter value is equal to or greater than the predetermined number of times (S2013: YES), or after execution of S206, the control unit 11 of the in-vehicle device 1 outputs a detection result notification indicating that the obstruction event has been continuously detected to the in-vehicle ECU 2. (S207).
- the control unit 11 performs the processing of S207 similarly to the processing of S107 of the first embodiment.
- the in-vehicle ECU 2 When the in-vehicle ECU 2 outputs a signal (sleep signal) indicating the start of diagnostic processing to the in-vehicle device 1, communication between the in-vehicle ECU 2 and the in-vehicle device 1 is interrupted, and the in-vehicle device 1 acquires the signal ( reception) may not be possible.
- a signal for incrementing the counter value detection indicating that the obstruction event has been continuously detected including interruption of the diagnostic process and interruption of communication between the in-vehicle ECU 2 and the in-vehicle device 1.
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Abstract
Description
本出願は、2021年4月8日出願の日本出願第2021-066074号に基づく優先権を主張し、前記日本出願に記載された全ての記載内容を援用するものである。
特許文献1の駆動装置においては、自装置に含まれる駆動部位の診断処理に関する考慮がされていないという問題点がある。
本開示の一態様によれば、自装置の診断処理に基づく対応を効率的に行うことができる車載装置等を提供することができる。
最初に本開示の実施態様を列挙して説明する。また、以下に記載する実施形態の少なくとも一部を任意に組み合わせてもよい。
本開示の実施形態に係る車載装置1の具体例を、以下に図面を参照しつつ説明する。なお、本開示はこれらの例示に限定されるものではなく、請求の範囲によって示され、請求の範囲と均等の意味及び範囲内でのすべての変更が含まれることが意図される。
以下、実施の形態について図面に基づいて説明する。図1は、実施形態1に係る車載装置1等を含む車載システムSの構成を例示する模式図である。図2は、車載装置1の内部構成を例示するブロック図である。車載システムSは、通信線5により相互に通信可能に接続される車載装置1及び車載ECU2を含み、車載装置1は、電源線41を介して、電源装置4及び車載負荷3と接続している。車載装置1は、例えば車載ECU2から出力(送信)される制御信号に基づき、自装置に含まれる駆動部14のオン又はオフにする制御を行い、自装置に接続される車載負荷3に対し、電源装置4から出力される電力の供給又は遮断を行う。
図5は、実施形態2(通信不通)に係る車載装置1の制御部11の処理を例示するフローチャートである。車載装置1の制御部11は、実施形態1と同様に、例えば、車両Cの起動又は停止を行うIGスイッチ21(イグニッション・スイッチ)に対する操作に応じて車載ECU2から出力される信号に基づき、以下の処理を行う。車載装置1の制御部11は、実施形態1のS101から、S106又はS1033までの処理と同様に、S201から、S206又はS2033までの処理を行う。
S 車載システム
1 車載装置
11 制御部
12 記憶部
13 通信部
14 駆動部
2 車載ECU
21 IGスイッチ
3 車載負荷
4 電源装置
41 電源線
5 通信線
Claims (9)
- 車両に搭載され、駆動部を含む車載装置であって、
前記駆動部を制御する制御部と、
前記車両に搭載される車載ECUと通信するための通信部とを備え、
前記制御部は、前記駆動部の診断処理を行うにあたり、該診断処理を阻害する阻害事象を検出した場合、前記阻害事象が検出された旨を示す検出結果通知を、前記通信部を介して前記車載ECUに出力する
車載装置。 - 前記阻害事象は、前記診断処理が中断された事象を含む
請求項1に記載の車載装置。 - 前記制御部は、前記診断処理が所定回数以上、連続して中断された場合、前記阻害事象が検出された旨を示す検出結果通知を前記車載ECUに出力する
請求項2に記載の車載装置。 - 前記制御部は、
前記車両のイグニッション電源がオフにされた際、前記駆動部の診断処理を行い、
前記イグニッション電源がオンにされた場合、実行中の診断処理を中断する
請求項1から請求項3のいずれか1項に記載の車載装置。 - 前記阻害事象は、前記制御部と前記車載ECUとの通信が所定期間以上、不通となった事象を含む
請求項1から請求項4のいずれか1項に記載の車載装置。 - 前記制御部は、前記阻害事象が検出された旨を示す検出結果通知を、前記駆動部の故障通知として前記車載ECUに出力する
請求項1から請求項5のいずれか1項に記載の車載装置。 - 前記車載ECUに出力する故障通知には、エラーコードが含まれ、
前記制御部は、前記診断処理を阻害する前記阻害事象を検出した場合のエラーコードと、前記診断処理が阻害されることなく前記診断処理を完了した際に検出したエラーコードとを異ならせる
請求項6に記載の車載装置。 - 駆動部を制御するコンピュータに
前記駆動部の診断処理を行うにあたり、該診断処理を阻害する阻害事象を検出した場合、前記阻害事象が検出された旨を示す検出結果通知を、前記コンピュータに通信可能に接続される車載ECUに出力する
処理を実行させるプログラム。 - 駆動部を制御するコンピュータに実行させる情報処理方法であって、
前記駆動部の診断処理を行うにあたり、該診断処理を阻害する阻害事象を検出した場合、前記阻害事象が検出された旨を示す検出結果通知を、前記コンピュータに通信可能に接続される車載ECUに出力する
処理をコンピュータに実行させる情報処理方法。
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CN202280025390.0A CN117136152A (zh) | 2021-04-08 | 2022-03-28 | 车载装置、程序及信息处理方法 |
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