CN114399918A - Parking space allocation method and device, electronic equipment and storage medium - Google Patents
Parking space allocation method and device, electronic equipment and storage medium Download PDFInfo
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- CN114399918A CN114399918A CN202111584686.XA CN202111584686A CN114399918A CN 114399918 A CN114399918 A CN 114399918A CN 202111584686 A CN202111584686 A CN 202111584686A CN 114399918 A CN114399918 A CN 114399918A
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/14—Traffic control systems for road vehicles indicating individual free spaces in parking areas
- G08G1/145—Traffic control systems for road vehicles indicating individual free spaces in parking areas where the indication depends on the parking areas
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
- G01S5/02—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves
- G01S5/0252—Radio frequency fingerprinting
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/01—Detecting movement of traffic to be counted or controlled
- G08G1/042—Detecting movement of traffic to be counted or controlled using inductive or magnetic detectors
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W64/00—Locating users or terminals or network equipment for network management purposes, e.g. mobility management
- H04W64/006—Locating users or terminals or network equipment for network management purposes, e.g. mobility management with additional information processing, e.g. for direction or speed determination
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
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Abstract
The embodiment of the application provides a parking space allocation method and device, electronic equipment and a storage medium. The parking space allocation method comprises the following steps: in response to the fact that vehicle information of a vehicle entering a parking area is obtained, determining position information of the vehicle based on WiFi fingerprint data contained in the vehicle information; in response to the fact that the position information of the free parking space in the parking area is obtained, screening out a target vehicle matched with the free parking space on the basis of the position information of the vehicle and the position information of the free parking space; and allocating the free parking space to the target vehicle. According to the method, the target vehicle can be matched for the free parking space from the vehicle entering the parking area based on the position information of the vehicle and the position information of the free parking space, so that the free parking space is allocated to the target vehicle.
Description
Technical Field
The present application relates to the field of data processing technologies, and in particular, to a parking space allocation method and apparatus, an electronic device, and a storage medium.
Background
With the continuous improvement of living standard, vehicles are more and more favored by people and become important transportation tools for people to go out. However, as the number of vehicles is increased, various problems are accompanied, and one of the more significant problems is the problem of parking in a parking area.
Because the number of parking spaces in the parking area is limited, if the number of vehicles entering the parking area is large, the situation that the supply of the parking spaces is not sufficient can occur, particularly, the parking spaces are more tense in the peak parking period, and even the situations of contending for the parking spaces and the like can occur. Therefore, how to reasonably distribute parking spaces and vehicles in a parking area is a problem to be solved urgently at present.
Disclosure of Invention
In view of the foregoing problems, embodiments of the present application provide a parking space allocation method, device, electronic device, and storage medium, which can reasonably allocate parking spaces and vehicles in a parking area.
According to an aspect of an embodiment of the present application, there is provided a parking space allocation method, including:
in response to the fact that vehicle information of a vehicle entering a parking area is obtained, determining position information of the vehicle based on WiFi fingerprint data contained in the vehicle information;
in response to the fact that the position information of the free parking space in the parking area is obtained, screening out a target vehicle matched with the free parking space on the basis of the position information of the vehicle and the position information of the free parking space;
and allocating the free parking space to the target vehicle.
Optionally, the location information includes a channel and a region, where one channel corresponds to a plurality of regions; based on the position information of the vehicle and the position information of the idle parking space, the target vehicle matched with the idle parking space is screened out, and the method comprises the following steps: selecting a vehicle in a channel as a candidate vehicle, wherein the vehicle is the same as the idle parking space; determining the candidate vehicle as the target vehicle if the candidate vehicle is one; if the number of the candidate vehicles is at least two, acquiring the distance between the area of the current candidate vehicle and the area of the vacant parking space for each candidate vehicle, and screening the target vehicle from the candidate vehicles based on the distance.
Optionally, obtaining a distance between a location area of the current candidate vehicle and a location area of the vacant parking space includes: acquiring a preset distance information table; the distance information table comprises distances between the areas corresponding to the channels; and inquiring the distance between the area of the current candidate vehicle and the area of the free parking space from the distance information table.
Optionally, the vehicle information further includes a time stamp of entry into the parking area; screening the target vehicle from the candidate vehicles based on the distance, including: selecting the candidate vehicle with the minimum distance; determining the candidate vehicle with the smallest distance as the target vehicle if the candidate vehicle with the smallest distance is one; and if the candidate vehicles with the minimum distance are at least two, determining the candidate vehicle with the front timestamp entering the parking area as the target vehicle.
Optionally, the location information includes a location channel and a location area; determining location information of the vehicle based on WiFi fingerprint data contained in the vehicle information, including: acquiring a preset fusion data table; the fusion data table comprises WiFi fingerprint data of all reference characteristic points, channels and areas where the reference characteristic points are located; matching the WiFi fingerprint data of the vehicle with the WiFi fingerprint data of each reference characteristic point; and taking the channel and the area where the successfully matched reference feature points are located as the channel and the area where the vehicle is located.
Optionally, after allocating the free parking space to the target vehicle, the method further includes: and controlling a display screen of the vacant parking space to display prompt information, wherein the prompt information is used for prompting that the vacant parking space is occupied by the target vehicle.
Optionally, after allocating the free parking space to the target vehicle, the method further includes: and sending a notification message to the target vehicle, wherein the notification message is used for notifying that the free parking space is allocated to the target vehicle.
According to another aspect of embodiments of the present application, there is provided a space allocation device, including:
the determining module is used for responding to the acquired vehicle information of the vehicle entering the parking area and determining the position information of the vehicle based on WiFi fingerprint data contained in the vehicle information;
the screening module is used for screening out a target vehicle matched with an idle parking space on the basis of the position information of the vehicle and the position information of the idle parking space in response to the position information of the idle parking space in the parking area;
and the distribution module is used for distributing the free parking spaces to the target vehicles.
Optionally, the location information includes a channel and a region, where one channel corresponds to a plurality of regions; the screening module includes: the candidate selecting unit is used for selecting the vehicle in the channel as the candidate vehicle, wherein the vehicle is the same as the idle parking space; a vehicle determination unit configured to determine the candidate vehicle as the target vehicle if the candidate vehicle is one; and the vehicle screening unit is used for acquiring the distance between the area of the current candidate vehicle and the area of the free parking space for each candidate vehicle if the number of the candidate vehicles is at least two, and screening the target vehicle from the candidate vehicles based on the distance.
Optionally, the vehicle screening unit comprises: the information acquisition subunit is used for acquiring a preset distance information table; the distance information table comprises distances between the areas corresponding to the channels; and the distance query subunit is used for querying the distance between the area of the current candidate vehicle and the area of the free parking space from the distance information table.
Optionally, the vehicle information further includes a time stamp of entry into the parking area; the vehicle screening unit includes: the vehicle selection subunit is used for selecting the candidate vehicle with the minimum distance; a vehicle determination subunit configured to determine, if there is one candidate vehicle whose distance is the smallest, the candidate vehicle whose distance is the smallest as the target vehicle; and if the candidate vehicles with the minimum distance are at least two, determining the candidate vehicle with the front timestamp entering the parking area as the target vehicle.
Optionally, the location information includes a location channel and a location area; the determining module comprises: the table acquisition unit is used for acquiring a preset fusion data table; the fusion data table comprises WiFi fingerprint data of all reference characteristic points, channels and areas where the reference characteristic points are located; the data matching unit is used for matching the WiFi fingerprint data of the vehicle with the WiFi fingerprint data of the reference characteristic points; and the information determining unit is used for taking the channel and the area where the successfully matched reference feature points are located as the channel and the area where the vehicle is located.
Optionally, the apparatus further comprises: and the control module is used for controlling a display screen of the vacant parking space to display prompt information, and the prompt information is used for prompting that the vacant parking space is occupied by the target vehicle.
Optionally, the apparatus further comprises: and the sending module is used for sending a notification message to the target vehicle, wherein the notification message is used for notifying that the free parking space is allocated to the target vehicle.
According to another aspect of embodiments of the present application, there is provided an electronic device including: one or more processors; and one or more computer-readable storage media having instructions stored thereon; when executed by the one or more processors, cause the processors to perform the method of allocating a space as described in any one of the above.
According to another aspect of embodiments of the present application, there is provided a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, causes the processor to execute the stall allocation method according to any one of the above.
In the embodiment of the application, in response to the fact that vehicle information of a vehicle entering a parking area is obtained, the position information of the vehicle is determined based on WiFi (Wireless-Fidelity) fingerprint data contained in the vehicle information; in response to the fact that the position information of the free parking space in the parking area is obtained, screening out a target vehicle matched with the free parking space on the basis of the position information of the vehicle and the position information of the free parking space; and allocating the free parking space to the target vehicle. Therefore, according to the method and the device, the target vehicle can be matched for the free parking space from the vehicle entering the parking area based on the position information of the vehicle and the position information of the free parking space, so that the free parking space is allocated to the target vehicle, the allocation of the parking space is more reasonable, and the situations of contending for the parking space and the like can be avoided.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the description of the embodiments of the present application will be briefly described below, and it is obvious that the drawings in the following description are only some drawings of the present application, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a flowchart illustrating steps of a parking space allocation method according to an embodiment of the present application.
Fig. 2 is a flowchart illustrating steps of another parking space allocation method according to an embodiment of the present application.
Fig. 3 is a schematic view of a parking area according to an embodiment of the present application.
Fig. 4 is a schematic diagram of a deployment manner of a geomagnetic sensor node according to an embodiment of the present application.
Fig. 5 is a block diagram of a parking space allocation device according to an embodiment of the present application.
Fig. 6 is a schematic structural diagram of an electronic device according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In general, there is a high level of parking space in the parking area during rush hour, and many vehicles wander along the way in the parking area, it is desirable to have the vehicle just leave the parking area to be preempted, or it is desirable to suddenly find an empty parking space, even if the vehicle is parked in a non-parking area, and a dispute event for the purpose of disputing the parking space occurs.
In one case, it is considered that the vehicle is parked in a "car locating" manner, that is, after the vehicle enters the parking area, coordinate values of the free parking spaces are obtained by locating the free parking spaces, and the navigation route is calculated according to the coordinate values of the free parking spaces, so that the vehicle is navigated to the free parking spaces. However, the calculation process is complex and complex in construction, and during the parking peak period, the free parking space is lost immediately, and often during the navigation period, the free parking space is forcibly occupied by other vehicles.
The embodiment of the application provides a mode of finding the car through "position" parks, also is based on the positional information of vehicle and the positional information of idle parking stall, for idle parking stall matching target vehicle, matches the back with idle parking stall and allots target vehicle, other vehicles can not occupy this idle parking stall after the distribution. The method of the embodiment of the application is more reasonable in allocation of the parking spaces, and the processing process is simpler and more convenient.
The following examples are provided for the purpose of illustrating the present invention. The execution main body of the parking space allocation method can be any equipment, and specifically can be a server, a terminal and the like. In the following embodiments, an execution subject is described as an example of a server.
Referring to fig. 1, a flowchart illustrating steps of a parking space allocation method according to an embodiment of the present application is shown.
As shown in fig. 1, the parking space allocation method may include the following steps:
After entering a parking area, the vehicle can acquire vehicle information of the vehicle, and the vehicle information is sent to a server executing the parking space allocation method. The vehicle information may include at least WiFi fingerprint data of the vehicle.
The server responds to the received vehicle information of the vehicle entering the parking area, determines the position information of the vehicle based on the WiFi fingerprint data contained in the vehicle information, and stores the vehicle information and the position information of the vehicle.
Illustratively, the vehicle may acquire its own vehicle information at regular time (e.g., every 1 second, 2 seconds, etc.), and the server may determine the vehicle location information again and update the stored vehicle information and location information each time the server receives the vehicle information of the vehicle.
The parking area can be provided with a detection device for detecting whether the parking space is free, after the detection device detects that the parking space is free, the detection device sends information (such as an identifier of the free parking space) of the free parking space to a server executing the parking space allocation method of the embodiment of the application, and the server acquires position information of the free parking space based on the information of the free parking space.
And the server responds to the received position information of the free parking spaces in the parking area, and screens out target vehicles matched with the free parking spaces from the stored vehicles on the basis of the stored position information of the vehicles and the position information of the free parking spaces.
And 103, distributing the free parking spaces to the target vehicles.
Illustratively, after the server allocates the free parking space to the target vehicle, the target vehicle can no longer collect the vehicle information of itself and send to the server. And if the server does not receive the vehicle information sent by the target vehicle within the preset time length, the server deletes the stored vehicle information and position information of the target vehicle.
According to the method, the target vehicle can be matched for the free parking space from the vehicle entering the parking area based on the position information of the vehicle and the position information of the free parking space, so that the free parking space is allocated to the target vehicle.
Referring to fig. 2, a flowchart illustrating steps of another parking space allocation method according to an embodiment of the present application is shown.
As shown in fig. 2, the parking space allocation method may include the following steps:
In this embodiment, adopt the mode that wiFi fingerprint positioning technology and earth magnetism sensor network technique fuse to realize the parking stall and distribute. The method specifically comprises an off-line training phase, an on-line mapping phase and a matching phase. The following are introduced separately.
(1) Off-line training phase
The purpose of the offline training stage is to create a fusion data table by fusing the WiFi fingerprint positioning technology and the geomagnetic sensor network technology.
On one hand, WiFi fingerprint data of each reference characteristic point is obtained based on a WiFi fingerprint positioning technology.
In a parking area, a plurality of WiFi nodes (such as WiFi hotspots) are set, and one reference feature point is set at intervals of a preset distance (such as 0.5 meter, 1 meter, 2 meters, etc.).
Traversing the reference feature points, for each reference feature point, a Media Access Control (MAC) address of each WiFi node received by the reference feature point and a received signal strength of each WiFi node may be obtained. And forming a binary set by the MAC address of one WiFi node received by the reference characteristic point and the received signal strength of the one WiFi node, further obtaining a binary set corresponding to the reference characteristic point, and taking the binary set as WiFi fingerprint data of the reference characteristic point. The WiFi fingerprint data of the multiple reference feature points can form a WiFi fingerprint database. Illustratively, the received Signal strength may be rss (received Signal strength).
On the other hand, the position information of each reference characteristic point is obtained based on the geomagnetic sensor network technology.
The earth's magnetic field is substantially constant over several kilometers, but large ferromagnetic objects can cause large perturbations to the earth's magnetic field. The geomagnetic sensor can distinguish the change of the earth magnetic field by one sixteenth, and the influence on the geomagnetic field reaches a fraction of the intensity of the geomagnetic field when the vehicle passes by, so that the vehicle is detected by the geomagnetic sensor, and the geomagnetic sensor has extremely high sensitivity.
In the parking area, set up a plurality of earth magnetism sensor nodes, earth magnetism sensor node sets up in parking stall department, can detect the vehicle and park the parking stall and leave the parking stall. And defining channels and areas by combining the geomagnetic sensor nodes. The channel is a channel between two rows of parking spaces. The region corresponds to the geomagnetic sensor node, and refers to a region detected by the geomagnetic sensor node. One channel may correspond to a plurality of geomagnetic sensor nodes, and thus one channel may correspond to a plurality of areas.
Illustratively, the earth magnetism sensor node can set up in the middle of two adjacent parking stalls and the position that is close to the passageway. Under this kind of condition, the region that the earth magnetism sensor node detected can include two adjacent parking stalls and the partial passageway before these two parking stalls at this earth magnetism sensor node place. This is because the intensity of the geomagnetic field in this area is affected when the vehicle is parked in or out of the parking space.
Referring to fig. 3, a schematic view of a parking area of an embodiment of the present application is shown. As shown in fig. 3, the parking area includes a lane ID (identification) of 2, and the lane may be divided into a left lane and a right lane. Respectively there are 6 parking stalls in the both sides of passageway, and the position that is close to the passageway in the middle of every two adjacent parking stalls sets up a geomagnetic sensor node, like geomagnetic sensor node 1 to geomagnetic sensor node 6 in figure 3. The region that every earth magnetism sensor node detected specifically is two adjacent parking stalls and the partial passageway before these two parking stalls that this earth magnetism sensor node is located, is a region that this earth magnetism sensor node corresponds promptly, as shown in fig. 3, the region that earth magnetism sensor node 3 detected is the net shadow part. The ID of the geomagnetic sensor node is the same as the area ID detected by the geomagnetic sensor node.
After the reference characteristic points and the geomagnetic sensor nodes are set, the position information of each reference characteristic point can be obtained. The position information of the reference feature point may include a channel (specifically, an ID of the channel) where the reference feature point is located and a region (specifically, an ID of the region) where the reference feature point is located, where the region is specifically a region in the channel where the reference feature point is located. The region corresponds to the geomagnetic sensor node, and the ID of the region is the same as the ID of the geomagnetic sensor node.
Through the above processing procedures, the server can create a converged data table. Illustratively, the fused data table may include data of a plurality of reference feature points. The data for each reference feature point may include, but is not limited to: WiFi fingerprint data, location information, coordinate values, etc.
Illustratively, the fused data table is shown in the following table one:
watch 1
In table i, i denotes the number of the reference feature point, n denotes the number of the WiFi node, m denotes the partitioned area ID, k denotes the channel ID of the parking area, RSSinIndicating the received signal strength, MAC, of the ith reference feature point from the nth WiFi nodenDenotes the MAC address of the n-th WiFi node, (x)i，yi) And coordinate values representing the ith reference feature point.
Illustratively, for the fused data table, the RSS of the received signal strength of each WiFi node received by the reference feature point may be updated at regular time (e.g., every 1 second, 2 seconds, etc.).
(2) On-line mapping phase
The purpose of the online mapping phase is to determine the location information of each vehicle entering the parking area in combination with WiFi fingerprint location technology. The online mapping phase comprises step 201 described above.
After entering a parking area, the vehicle can acquire vehicle information of the vehicle, and the vehicle information is sent to a server executing the parking space allocation method.
Illustratively, the vehicle information may include, but is not limited to: WiFi fingerprint data of the vehicle, vehicle ID, timestamp of the vehicle entering the parking area, etc. Among other things, the WiFi fingerprint data of the vehicle may include, but is not limited to: the vehicle receives the MAC address of each WiFi node, the received signal strength of each WiFi node, and so on. Vehicle IDs may include, but are not limited to: the license plate number of the vehicle, the mobile phone number of the owner of the vehicle, the vehicle-mounted terminal ID of the vehicle and the like.
The server determines, in response to receiving vehicle information of a vehicle entering the parking area, location information of the vehicle based on WiFi fingerprint data included in the vehicle information. The position information of the vehicle may include a lane where the vehicle is located (specifically, an ID of the lane where the vehicle is located) and a zone where the vehicle is located (specifically, an ID of the zone where the vehicle is located).
Illustratively, the process of determining the location information of the vehicle based on the WiFi fingerprint data included in the vehicle information may include: acquiring a preset fusion data table, and matching the WiFi fingerprint data of the vehicle with the WiFi fingerprint data of each reference characteristic point; and taking the channel and the area where the successfully matched reference feature points are located as the channel and the area where the vehicle is located.
Illustratively, the WiFi fingerprint data of the vehicle may be matched with the WiFi fingerprint data of each reference feature point based on an NN (Nearest Neighbor) algorithm.
Specifically, for each reference feature point, the distance between the WiFi fingerprint data of the current reference feature point and the WiFi fingerprint data of the vehicle is calculated, and the reference feature point corresponding to the WiFi fingerprint data with the smallest distance is determined as the reference feature point with successful matching. The distance between the WiFi fingerprint data of the current reference feature point and the WiFi fingerprint data of the vehicle can represent the similarity between the WiFi fingerprint data of the current reference feature point and the WiFi fingerprint data of the vehicle, and the smaller the distance is, the greater the similarity is, so that the reference feature point corresponding to the WiFi fingerprint data with the highest similarity (namely, the smallest distance) is taken as the reference feature point which is successfully matched. Illustratively, the distance may include, but is not limited to: euclidean distance, manhattan distance, minkowski distance, and the like.
Illustratively, the WiFi fingerprint data of the vehicle may be matched with the WiFi fingerprint data of each reference feature point based on KNN (K-Nearest Neighbor) algorithm.
Specifically, for each reference feature point, calculating the distance between the WiFi fingerprint data of the current reference feature point and the WiFi fingerprint data of the vehicle, selecting the reference feature points corresponding to the K WiFi fingerprint data with the smallest distance, then counting the number of reference feature points in which channels and regions in the K reference feature points are the same, and determining the reference feature points with the largest number as the reference feature points which are successfully matched.
Through the above-described processing procedures, the server can obtain the vehicle information and the position information of each vehicle that enters the parking area and is not parked, and thus can create the vehicle data table. Illustratively, the vehicle data table may include data for a plurality of vehicles. The data for each vehicle may include, but is not limited to: vehicle information, location information, etc.
Illustratively, the vehicle data sheet is shown in Table two below:
watch two
In table two, m represents the partitioned zone ID, 18xxx, 13xxx, and 15xxx represent the owner's mobile phone number of the vehicle, and the format of the time stamp of entering the parking zone is yyymmdddhhmmss, where yyyy represents year, mm represents month, dd represents day, and when hh represents hour, mm represents minute, and ss represents second.
Illustratively, the vehicle data table may be updated at regular time (e.g., every 1 second, 2 seconds, etc.) according to the vehicle information transmitted by the vehicle.
(3) Matching phase
The purpose of the matching stage is to match a target vehicle for an idle parking space by combining the geomagnetic sensor network technology. The matching phase includes the following step 202.
The geomagnetic sensor node can detect whether the vehicle is parked in a parking space or leaves the parking space in real time or at regular time so as to determine whether an idle parking space exists. Illustratively, the car owner can press the button of "I want to leave the field" in parking stall, and parking stall display screen shows "I will leave this parking stall", and the earth magnetism sensor node starts and detects whether the vehicle leaves the parking stall.
When the vehicle stops in the parking space or leaves the parking space, the intensity of the corresponding axial geomagnetic field can be increased or decreased according to the arrangement position of the geomagnetic sensor nodes. Taking the geomagnetic sensor node deployment mode shown in fig. 4 as an example, the geomagnetic sensor node is deployed at a position close to the channel in the middle of two adjacent parking spaces. Judging the parking and leaving of the vehicle by adopting the intensity change of the geomagnetic field in the Z axial direction, wherein a first threshold value is required to be set for judging the intensity change of the geomagnetic field in the Z axial direction; judging whether the vehicle stops in (or leaves) a left parking space (parking space 1) or a right parking space (parking space 2) by adopting the variation of the geomagnetic field intensity in the Y axis direction, wherein a second threshold value is required to be set for judging the variation of the geomagnetic field intensity in the Y axis direction; and detecting the passing of the vehicle by adopting the intensity change of the geomagnetic field in the X axial direction.
The specific detection process comprises the following steps a 1-a 4:
step a1, initializing, detecting the intensity of the geomagnetic field in the Z-axis direction and the Y-axis direction respectively, recording the intensity mean value of the geomagnetic field in the Z-axis direction as a first mean value, and recording the intensity mean value of the geomagnetic field in the Y-axis direction as a second mean value.
And a2, detecting the current Z-axis geomagnetic field strength value, and calculating a difference value obtained by subtracting the first mean value from the current Z-axis geomagnetic field strength value to serve as a first difference value.
And a3, detecting the current Y-axis geomagnetic field strength value, and calculating a difference value obtained by subtracting the second average value from the current Y-axis geomagnetic field strength value as a second difference value.
Step a4, if the first difference is greater than the first threshold and the second difference is greater than the second threshold, determining that there is a vehicle parking in the right parking space (parking space 2); if the first difference is larger than the first threshold value and the second difference is smaller than or equal to the second threshold value, determining that the vehicle is parked into the left parking space (parking space 1); if the first difference is smaller than or equal to the first threshold value and the second difference is larger than the second threshold value, determining that the vehicle leaves the left parking space (parking space 1); if the first difference is less than or equal to the first threshold and the second difference is less than or equal to the second threshold, it is determined that there is a vehicle leaving the right slot (slot 2).
After the geomagnetic sensor node detects that a vehicle leaves a certain parking space, the parking space becomes an idle parking space, information (such as an identifier of the idle parking space) of the idle parking space can be sent to a server executing the parking space allocation method of the embodiment of the application in a ZigBee serial port transmission mode and the like, and the server can inquire the position information of the idle parking space according to the information such as the identifier of the idle parking space. Or the geomagnetic sensor node can send the detected geomagnetic field strength value to the server through modes such as ZigBee serial port transmission and the like, and the server judges whether an idle parking space exists or not based on the geomagnetic field strength values of all the places and inquires the position information of the idle parking space. The position information of the vacant parking space may include a channel (specifically, an ID of the channel) and a region (specifically, an ID of the region) of the vacant parking space. The server can also update the parking space duty situation at regular time.
And the server screens out the target vehicle matched with the idle parking space based on the position information of the vehicle and the position information of the idle parking space in response to the position information of the idle parking space in the parking area.
Illustratively, the process of screening out the target vehicle that matches with the vacant parking stall based on the positional information of vehicle and the positional information of vacant parking stall can include: selecting a vehicle in a channel as a candidate vehicle, wherein the vehicle is the same as the idle parking space; determining the candidate vehicle as the target vehicle if the candidate vehicle is one; if the number of the candidate vehicles is at least two, acquiring the distance between the area of the current candidate vehicle and the area of the vacant parking space for each candidate vehicle, and screening the target vehicle from the candidate vehicles based on the distance.
In an optional implementation manner, after a plurality of geomagnetic sensor nodes are arranged in a parking area and channels and areas are defined, distances between the areas corresponding to the channels may be defined, and a distance information table may be created. Therefore, the process of obtaining the distance between the area of the current candidate vehicle and the area of the free parking space may include: and acquiring a preset distance information table, and inquiring the distance between the area of the current candidate vehicle and the area of the free parking space from the distance information table.
The process of screening the target vehicle from the candidate vehicles based on the distance may include: selecting the candidate vehicle with the minimum distance; determining the candidate vehicle with the smallest distance as the target vehicle if the candidate vehicle with the smallest distance is one; and if the candidate vehicles with the minimum distance are at least two, determining the candidate vehicle with the front timestamp entering the parking area as the target vehicle.
Taking the parking area shown in fig. 3 as an example, let d be the projection of the widths of two parking spaces, and define the distance between the areas corresponding to the channels based on this. For example, for the geomagnetic sensor node 1 (area 1), the distance between the geomagnetic sensor node 1 (area 1) and the geomagnetic sensor node 2 (area 2) is 0, the distance between the geomagnetic sensor node 1 (area 1) and the geomagnetic sensor node 3 (area 3) is 1d, the distance between the geomagnetic sensor node 1 (area 1) and the geomagnetic sensor node 4 (area 4) is 1d, the distance between the geomagnetic sensor node 1 (area 1) and the geomagnetic sensor node 5 (area 5) is 2d, and the distance between the geomagnetic sensor node 1 (area 1) and the geomagnetic sensor node 6 (area 6) is 2 d.
Therefore, the distance information table is shown in table three below:
watch III
As shown in fig. 3, the ID of the lane where the vacant parking space is located is 2, and the ID of the area where the vacant parking space is located is 1. Presence of vehicle T in lane 21And a vehicle T2Vehicle T1The ID of the located channel is 2, the ID of the located area is 5, and the vehicle T2The ID of the located channel is 2, and the ID of the located area is 4. Thus the vehicle T1And a vehicle T2Are candidate vehicles.
Inquiring the vehicle T from the vehicle data table (table II)1And a vehicle T2The vehicle data of (a) is shown in table four below:
watch four
Then, the vehicle T is inquired from the distance information table (table three)1Is located in the area 5 and is emptyThe distance between the areas 1 of the idle parking spaces is 2d, and the vehicle T is inquired2The distance between the area 4 and the area 1 of the free parking space is d. Thus, the vehicle T2The distance between the area 4 and the area 1 of the free parking space is minimum, and the vehicle T2The vehicle ID of the target vehicle is 18 xxx.
And step 203, allocating the free parking spaces to the target vehicles.
And step 204, controlling a display screen of the vacant parking space to display prompt information.
After the server screens out the target vehicles matched with the idle parking spaces, the display screen of the idle parking spaces can be controlled to display prompt information. The prompt information is used for prompting that the free parking space is occupied by the target vehicle, so that other vehicles do not occupy the free parking space any more.
After screening out the target vehicles matched with the free parking spaces, the server can send notification messages to the target vehicles. The notification message is used for notifying that the target vehicle is allocated with the free parking space, the vehicle can display the notification message on a display screen and can also broadcast the notification message in a voice mode, and therefore a vehicle owner can timely park the vehicle in the free parking space.
The embodiment of the application provides a mode of finding a vehicle in a position, namely, a free parking space (an empty parking space or a parking space where a vehicle is about to leave) initiates a matching request to a nearby vehicle to find an optimal matching target vehicle, the vehicle and the parking space can be pre-occupied once matching is successful, and display screen display and voice broadcast are carried out on the vehicle and the parking space. The mode based on the integration of the WiFi fingerprint positioning technology and the geomagnetic sensor network technology realizes that the vehicle is found in a position, and the vehicle matched with the idle parking space is the vehicle in the area closest to the area where the idle parking space is located. By automatically acquiring and updating the WiFi fingerprint database, dynamically tracking and updating the vehicle position information, automatically acquiring and updating the fusion data table, and pre-establishing the distance information table, the coordinate values of the vehicle and the parking space are not required to be obtained through positioning and the distance between the coordinate values is calculated, but the target vehicle can be matched by table lookup according to the distance between nodes (namely regions) of the geomagnetic sensor, and the matching speed is higher.
Referring to fig. 5, a block diagram of a parking space allocation device according to an embodiment of the present application is shown.
As shown in fig. 5, the parking space allocation device may include the following modules:
the determining module 501 is configured to, in response to obtaining vehicle information of a vehicle entering a parking area, determine location information of the vehicle based on WiFi fingerprint data included in the vehicle information;
the screening module 502 is configured to screen out a target vehicle matched with an idle parking space based on the position information of the vehicle and the position information of the idle parking space in response to acquiring the position information of the idle parking space in the parking area;
and an allocating module 503, configured to allocate the free parking space to the target vehicle.
Optionally, the location information includes a channel and a region, where one channel corresponds to a plurality of regions; the screening module 502 includes: the candidate selecting unit is used for selecting the vehicle in the channel as the candidate vehicle, wherein the vehicle is the same as the idle parking space; a vehicle determination unit configured to determine the candidate vehicle as the target vehicle if the candidate vehicle is one; and the vehicle screening unit is used for acquiring the distance between the area of the current candidate vehicle and the area of the free parking space for each candidate vehicle if the number of the candidate vehicles is at least two, and screening the target vehicle from the candidate vehicles based on the distance.
Optionally, the vehicle screening unit comprises: the information acquisition subunit is used for acquiring a preset distance information table; the distance information table comprises distances between the areas corresponding to the channels; and the distance query subunit is used for querying the distance between the area of the current candidate vehicle and the area of the free parking space from the distance information table.
Optionally, the vehicle information further includes a time stamp of entry into the parking area; the vehicle screening unit includes: the vehicle selection subunit is used for selecting the candidate vehicle with the minimum distance; a vehicle determination subunit configured to determine, if there is one candidate vehicle whose distance is the smallest, the candidate vehicle whose distance is the smallest as the target vehicle; and if the candidate vehicles with the minimum distance are at least two, determining the candidate vehicle with the front timestamp entering the parking area as the target vehicle.
Optionally, the location information includes a location channel and a location area; the determining module 501 includes: the table acquisition unit is used for acquiring a preset fusion data table; the fusion data table comprises WiFi fingerprint data of all reference characteristic points, channels and areas where the reference characteristic points are located; the data matching unit is used for matching the WiFi fingerprint data of the vehicle with the WiFi fingerprint data of the reference characteristic points; and the information determining unit is used for taking the channel and the area where the successfully matched reference feature points are located as the channel and the area where the vehicle is located.
Optionally, the apparatus further comprises: and the control module is used for controlling a display screen of the vacant parking space to display prompt information, and the prompt information is used for prompting that the vacant parking space is occupied by the target vehicle.
Optionally, the apparatus further comprises: and the sending module is used for sending a notification message to the target vehicle, wherein the notification message is used for notifying that the free parking space is allocated to the target vehicle.
According to the method, the target vehicle can be matched for the free parking space from the vehicle entering the parking area based on the position information of the vehicle and the position information of the free parking space, so that the free parking space is allocated to the target vehicle.
For the device embodiment, since it is basically similar to the method embodiment, the description is simple, and for the relevant points, refer to the partial description of the method embodiment.
In an embodiment of the application, an electronic device is also provided. The electronic device may include one or more processors, and one or more computer-readable storage media having instructions, such as an application program, stored thereon. When the instructions are executed by the one or more processors, the processors are caused to execute the stall allocation method of any one of the above embodiments.
Referring to fig. 6, a schematic diagram of an electronic device structure according to an embodiment of the present application is shown. As shown in fig. 6, the electronic device includes a processor 601, a communication interface 602, a memory 603, and a communication bus 604. The processor 601, the communication interface 602, and the memory 603 complete communication with each other through the communication bus 604.
A memory 603 for storing a computer program.
The processor 601 is configured to implement the parking space allocation method according to any of the embodiments described above when executing the program stored in the memory 603.
The communication interface 602 is used for communication between the above-described electronic apparatus and other apparatuses.
The communication bus 604 may be a Peripheral Component Interconnect (PCI) bus, an Extended Industry Standard Architecture (EISA) bus, or the like. The communication bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, only one thick line is shown, but this does not mean that there is only one bus or one type of bus.
The aforementioned processor 601 may include, but is not limited to: a Central Processing Unit (CPU), a Network Processor (NP), a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other Programmable logic device, a discrete Gate or transistor logic device, a discrete hardware component, and so on.
The aforementioned memory 603 may include, but is not limited to: read Only Memory (ROM), Random Access Memory (RAM), Compact Disc Read Only Memory (CD-ROM), Electrically Erasable Programmable Read Only Memory (EEPROM), hard disk, floppy disk, flash Memory, and the like.
In an embodiment of the present application, a computer-readable storage medium is further provided, on which a computer program is stored, where the computer program is executable by a processor of an electronic device, and when the computer program is executed by the processor, the processor is caused to execute the parking space allocation method according to any one of the above embodiments.
The embodiments in the present specification are related to each other, and all the embodiments are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments may be referred to each other.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or terminal that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or terminal. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or terminal that comprises the element.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present application may be embodied in the form of a software product, which is stored in a storage medium (such as ROM, RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present application.
While the present embodiments have been described with reference to the accompanying drawings, it is to be understood that the invention is not limited to the precise embodiments described above, which are meant to be illustrative and not restrictive, and that various changes may be made therein by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.
Those of ordinary skill in the art would appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed in the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application or portions thereof that substantially contribute to the prior art may be embodied in the form of a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a U disk, a removable hard disk, a ROM, a RAM, a magnetic disk, or an optical disk.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. In view of the above, the description should not be taken as limiting the application.
Claims (10)
1. A parking space allocation method is characterized by comprising the following steps:
in response to the fact that vehicle information of a vehicle entering a parking area is obtained, determining position information of the vehicle based on WiFi fingerprint data contained in the vehicle information;
in response to the fact that the position information of the free parking space in the parking area is obtained, screening out a target vehicle matched with the free parking space on the basis of the position information of the vehicle and the position information of the free parking space;
and allocating the free parking space to the target vehicle.
2. The method of claim 1, wherein the location information comprises a channel and a region, and one channel corresponds to a plurality of regions; based on the position information of the vehicle and the position information of the idle parking space, the target vehicle matched with the idle parking space is screened out, and the method comprises the following steps:
selecting a vehicle in a channel as a candidate vehicle, wherein the vehicle is the same as the idle parking space;
determining the candidate vehicle as the target vehicle if the candidate vehicle is one;
if the number of the candidate vehicles is at least two, acquiring the distance between the area of the current candidate vehicle and the area of the vacant parking space for each candidate vehicle, and screening the target vehicle from the candidate vehicles based on the distance.
3. The method of claim 2, wherein obtaining the distance between the area of the current candidate vehicle and the area of the vacant parking space comprises:
acquiring a preset distance information table; the distance information table comprises distances between the areas corresponding to the channels;
and inquiring the distance between the area of the current candidate vehicle and the area of the free parking space from the distance information table.
4. The method of claim 2, wherein the vehicle information further includes a time stamp of entry into the parking area; screening the target vehicle from the candidate vehicles based on the distance, including:
selecting the candidate vehicle with the minimum distance;
determining the candidate vehicle with the smallest distance as the target vehicle if the candidate vehicle with the smallest distance is one;
and if the candidate vehicles with the minimum distance are at least two, determining the candidate vehicle with the front timestamp entering the parking area as the target vehicle.
5. The method of claim 1, wherein the location information includes a location channel and a location area; determining location information of the vehicle based on WiFi fingerprint data contained in the vehicle information, including:
acquiring a preset fusion data table; the fusion data table comprises WiFi fingerprint data of all reference characteristic points, channels and areas where the reference characteristic points are located;
matching the WiFi fingerprint data of the vehicle with the WiFi fingerprint data of each reference characteristic point;
and taking the channel and the area where the successfully matched reference feature points are located as the channel and the area where the vehicle is located.
6. The method of claim 1, further comprising, after allocating the free space to the target vehicle:
and controlling a display screen of the vacant parking space to display prompt information, wherein the prompt information is used for prompting that the vacant parking space is occupied by the target vehicle.
7. The method of claim 1, further comprising, after allocating the free space to the target vehicle:
and sending a notification message to the target vehicle, wherein the notification message is used for notifying that the free parking space is allocated to the target vehicle.
8. A parking space allocation device, characterized in that, the device includes:
the determining module is used for responding to the acquired vehicle information of the vehicle entering the parking area and determining the position information of the vehicle based on WiFi fingerprint data contained in the vehicle information;
the screening module is used for screening out a target vehicle matched with an idle parking space on the basis of the position information of the vehicle and the position information of the idle parking space in response to the position information of the idle parking space in the parking area;
and the distribution module is used for distributing the free parking spaces to the target vehicles.
9. An electronic device, comprising:
one or more processors; and
one or more computer-readable storage media having instructions stored thereon;
the instructions, when executed by the one or more processors, cause the processors to perform the method of allocating a space of any one of claims 1 to 7.
10. A computer-readable storage medium, on which a computer program is stored which, when executed by a processor, causes the processor to carry out a space allocation method according to any one of claims 1 to 7.
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