A vehicle-mounted electronic tag identification method, an identification system and an upper computer

Abstract

The application discloses a kind of identification method, identification system and host computer of vehicle-mounted electronic tag.The method comprises: obtaining the position of vehicle, obtaining the position of vehicle-mounted electronic tag, according to the position of vehicle and the position of vehicle-mounted electronic tag, the quantity of vehicle-mounted electronic tag on the vehicle is identified.The application scheme can quickly identify the quantity of vehicle-mounted electronic tag installed on the vehicle when the vehicle is running at high speed, effectively regulate the behavior of car owner, prevent car owner from escaping toll by installing multiple vehicle-mounted electronic tags on the vehicle.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of intelligent transportation, and particularly relates to a recognition method and system for an on-board electronic tag, an upper computer and a computer readable storage medium. BACKGROUND

[0002] With the continuous expansion of highway networks, some unscrupulous vehicles use multiple on-board electronic tags (OBU) installed on the vehicles to evade tolls, which disrupts the normal order of highway toll collection. The current inspection method mostly performs abnormal inspection through offline data, which cannot determine whether a vehicle is abnormal when the vehicle is leaving the highway, thereby leading to difficulties in subsequent inspection, making it difficult to trace, and the illegal cost of the toll evasion vehicle being low, which causes huge economic losses to the country. SUMMARY

[0003] The application provides a recognition method and system for an on-board electronic tag, an upper computer and a computer readable storage medium, which can quickly identify the number of on-board electronic tags installed on a vehicle when the vehicle is leaving the highway, effectively regulate the behavior of the vehicle owner, and prevent the vehicle owner from evading tolls by installing multiple on-board electronic tags on the vehicle.

[0004] In a first aspect, the application provides a recognition method for an on-board electronic tag, comprising:

[0005] obtaining a position of a vehicle;

[0006] obtaining a position of an on-board electronic tag;

[0007] identifying the number of on-board electronic tags on the vehicle according to the position of the vehicle and the position of the on-board electronic tag.

[0008] Optionally, identifying the number of on-board electronic tags on the vehicle according to the position of the vehicle and the position of the on-board electronic tag comprises:

[0009] identifying the on-board electronic tag with the same position as the vehicle as an on-board electronic tag on the vehicle;

[0010] counting the number of on-board electronic tags on the vehicle.

[0011] Optionally, the position of the vehicle is represented by a position range, and the position of the on-board electronic tag is represented by a position point; when the position point of the on-board electronic tag is located within the position range of the vehicle, it is determined that the position of the on-board electronic tag is the same as the position of the vehicle.

[0012] Optionally, the position of the vehicle and the position of the on-board electronic tag are both represented by position points; when the position point of the on-board electronic tag is not more than a preset distance threshold away from the position point of the vehicle, it is determined that the position of the on-board electronic tag is the same as the position of the vehicle.

[0013] Optionally, the method further comprises:

[0014] acquiring a license plate image of the vehicle through a camera;

[0015] identifying a license plate number of the vehicle according to the license plate image;

[0016] storing the license plate number of the vehicle in association with the number of the electronic tags on the vehicle.

[0017] Optionally, the position of the vehicle is detected through a radar or a camera, and the position of the electronic tags is obtained through communication between the road side unit and the electronic tags.

[0018] In a second aspect, the present application provides a system for identifying electronic tags on a vehicle, comprising:

[0019] a road side unit, configured to communicate with the electronic tags to obtain the positions of the electronic tags;

[0020] a radar, configured to detect the position of the vehicle;

[0021] a host computer, connected to the road side unit and the radar respectively, configured to receive the positions of the electronic tags sent by the road side unit and the position of the vehicle sent by the radar, and identify the number of the electronic tags on the vehicle according to the position of the vehicle and the positions of the electronic tags.

[0022] Optionally, the system further comprises:

[0023] a camera, connected to the host computer, configured to capture a license plate image of the vehicle;

[0024] the host computer is further configured to receive the license plate image sent by the camera, identify a license plate number of the vehicle according to the license plate image, and store the license plate number of the vehicle in association with the number of the electronic tags on the vehicle.

[0025] Optionally, the host computer is further configured to perform time synchronization processing on the road side unit and the radar.

[0026] In a third aspect, the present application provides a host computer, which comprises a memory, a processor, and a computer program stored in the memory and executable on the processor, and the processor implements the steps of the method of the first aspect when executing the computer program.

[0027] In a fourth aspect, the present application provides a computer readable storage medium, which stores a computer program, and the computer program is executable on a processor to implement the steps of the method of the first aspect.

[0028] In a fifth aspect, the present application provides a computer program product, the computer program product comprising a computer program which, when executed by one or more processors, implements the steps of the method according to the first aspect.

[0029] The present application has the beneficial effect that the number of vehicle-mounted electronic tags on the vehicle can be identified according to the position of the vehicle and the position of the vehicle-mounted electronic tags. When the vehicle is running at a high speed, the number of vehicle-mounted electronic tags on the vehicle can be quickly identified according to the position of the vehicle and the position of the vehicle-mounted electronic tags. The number of vehicle-mounted electronic tags on the vehicle can be used by the high-speed toll collector to identify vehicles with an abnormal number of vehicle-mounted electronic tags in time, so as to effectively regulate the behavior of the vehicle owner and prevent the vehicle owner from evading toll fees by installing multiple vehicle-mounted electronic tags on the vehicle.

[0030] It can be understood that the beneficial effects of the second aspect to the fifth aspect can be seen from the above description, and will not be repeated here. BRIEF DESCRIPTION OF DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiments or prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0032] Figure 1 is an architecture example diagram of the vehicle-mounted electronic tag identification system provided by the embodiments of the present application;

[0033] Figure 2 is an implementation flowchart of the vehicle-mounted electronic tag identification method provided by the embodiments of the present application;

[0034] Figure 3 is a position diagram of the vehicle and the vehicle-mounted electronic tag provided by the embodiments of the present application;

[0035] Figure 4 is a structure block diagram of the host computer provided by the embodiments of the present application. DETAILED DESCRIPTION

[0036] In the following description, specific details such as specific system structures, techniques, etc. are presented in order to thoroughly understand the embodiments of the present application. However, it should be clear to those skilled in the art that the present application can also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits and methods are omitted to avoid unnecessary details that hinder the description of the present application.

[0037] In order to illustrate the technical solutions provided by the embodiments of the present application, the following will be described through specific embodiments.

[0038] The following describes a vehicle-mounted electronic tag identification system provided by the embodiments of the present application. Please refer to Figure 1 , Figure 1 An architecture example of the vehicle-mounted electronic tag identification system is given. The vehicle-mounted electronic tag identification system comprises:

[0039] a road side unit, configured to communicate with the vehicle-mounted electronic tags to obtain the positions of the vehicle-mounted electronic tags;

[0040] a radar, configured to detect the position of a vehicle;

[0041] a host computer, connected with the road side unit and the radar respectively, configured to receive the positions of the vehicle-mounted electronic tags sent by the road side unit and the position of the vehicle sent by the radar, and identify the number of the vehicle-mounted electronic tags on the vehicle according to the position of the vehicle and the positions of the vehicle-mounted electronic tags.

[0042] The road side unit can be installed at a highway intersection. The road side unit has an antenna, which can communicate with the vehicle-mounted electronic tags within a certain range through the dedicated short range communication technology (DSRC), so as to determine the positions of the vehicle-mounted electronic tags within the range according to the communication data, and realize the highway toll transaction with the vehicle-mounted electronic tags. It should be noted that the above-mentioned range refers to the communication range of the road side unit, which can be adjusted by adjusting the antenna parameters of the road side unit. For example, the communication range of the road side unit can be adjusted to the parking transaction area of the highway intersection. After the road side unit determines the positions of the vehicle-mounted electronic tags within the above-mentioned certain range, the positions of the vehicle-mounted electronic tags can be sent to the host computer.

[0043] The radar can include but is not limited to millimeter wave radar and laser radar. The radar emits a beam through its own antenna, the beam is reflected back when it hits an object, and the radar determines the position of the vehicle according to the reflected beam. The vehicle can be a vehicle waiting in the parking transaction area. After the radar determines the position of the vehicle, the position of the vehicle can be sent to the host computer.

[0044] The host computer can receive the positions of the vehicle-mounted electronic tags sent by the road side unit, and receive the position of the vehicle sent by the radar. The host computer can identify the number of the vehicle-mounted electronic tags installed on the vehicle according to the positions of the vehicle-mounted electronic tags and the position of the vehicle.

[0045] Optionally, the upper computer can also perform time synchronization processing on the road side unit and the radar, so that the local clocks of the road side unit and the radar are consistent. In the case that the local clocks of the road side unit and the radar are consistent, the upper computer can determine the position of the vehicle-mounted electronic tag and the position of the vehicle at the same time according to the time stamp of the position of the vehicle-mounted electronic tag stamped by the road side unit and the time stamp of the position of the vehicle stamped by the radar. In this way, the number of vehicle-mounted electronic tags on the vehicle can be more accurately identified.

[0046] In some embodiments, if there is a time difference between the position of the vehicle and the position of the vehicle-mounted electronic tag, such as the position of the vehicle is the position of the first second and the position of the vehicle-mounted electronic tag is the position of the second second, the radar can also predict the position of the vehicle at the second second according to the speed of the vehicle and the position of the vehicle at the first second, to provide the upper computer with time-synchronized vehicle position and vehicle-mounted electronic tag position.

[0047] Optionally, as shown in Figure 1 , the vehicle-mounted electronic tag identification system can also include a camera, and the dashed line between the camera and the upper computer indicates that the camera is an optional item. The camera is connected to the upper computer and is used to take an image of the license plate of the vehicle and send the image to the upper computer. The upper computer can identify the license plate number of the vehicle according to the image. After identifying the number of vehicle-mounted electronic tags on the vehicle, the upper computer can store the license plate number of the vehicle and the number of vehicle-mounted electronic tags on the vehicle in association, so that the traffic management department can screen vehicles that evade tolls according to the stored information.

[0048] As can be seen from the above, the present application first acquires the position of the vehicle and the position of the vehicle-mounted electronic tag, and then identifies the number of vehicle-mounted electronic tags on the vehicle according to the position of the vehicle and the position of the vehicle-mounted electronic tag. When the vehicle is driving at high speed, the number of vehicle-mounted electronic tags installed on the vehicle can be quickly identified through the position of the vehicle and the position of the vehicle-mounted electronic tag. The high-speed toll collector can timely discover vehicles with abnormal number of vehicle-mounted electronic tags according to the number of vehicle-mounted electronic tags installed on the vehicle, which can effectively regulate the behavior of the vehicle owner and prevent the vehicle owner from evading tolls by installing multiple vehicle-mounted electronic tags on the vehicle.

[0049] Based on the above vehicle-mounted electronic tag identification system, a vehicle-mounted electronic tag identification method according to an embodiment of the present application is described below. Please refer to Figure 2 , the vehicle-mounted electronic tag identification method can be applied to the upper computer in Figure 1 . The vehicle-mounted electronic tag identification method comprises the following steps:

[0050] Step 201, acquiring the position of the vehicle.

[0051] Step 202, acquiring the position of the vehicle-mounted electronic tag.

[0052] In step 203, the number of the vehicle-mounted electronic tags on the vehicle is identified according to the position of the vehicle and the positions of the vehicle-mounted electronic tags.

[0053] In the embodiments of the present application, the host computer is connected with the road side unit and the radar respectively, and can receive the positions of the vehicle-mounted electronic tags sent by the road side unit and the position of the vehicle sent by the radar. The vehicle is a specific vehicle for which the number of vehicle-mounted electronic tags needs to be identified, for example, a vehicle located in a parking transaction area at a highway intersection. It should be noted that the road side unit can determine the positions of multiple vehicle-mounted electronic tags within its communication range. The host computer can determine, according to the position of the vehicle and the positions of the multiple vehicle-mounted electronic tags, how many of the multiple vehicle-mounted electronic tags are located on the vehicle. It should be understood that if there is only one vehicle-mounted electronic tag within the communication range of the road side unit, the host computer only identifies whether this one vehicle-mounted electronic tag is located on the vehicle. Of course, if there is only one vehicle-mounted electronic tag within the communication range, the host computer can also not identify the number of vehicle-mounted electronic tags on the vehicle, and only when the number of vehicle-mounted electronic tags within the communication range is two or more, the host computer identifies the number of vehicle-mounted electronic tags on the vehicle and issues an alarm to remind the highway toll collector.

[0054] In some embodiments, in order to accurately identify the number of vehicle-mounted electronic tags on the vehicle, the above step 203 includes:

[0055] The vehicle-mounted electronic tag with the same position as the vehicle is identified as the vehicle-mounted electronic tag on the vehicle.

[0056] The number of vehicle-mounted electronic tags on the vehicle is counted.

[0057] For each vehicle-mounted electronic tag detected by the road side unit, it can be determined whether the position of the vehicle-mounted electronic tag is the same as the position of the vehicle. If so, it is determined that the vehicle-mounted electronic tag is on the vehicle for which the number of vehicle-mounted electronic tags needs to be identified. After the determination step is performed for each vehicle-mounted electronic tag, the number of vehicle-mounted electronic tags on the vehicle can be counted.

[0058] For example, it is assumed that the radar detects the position of a vehicle A located in a parking transaction area at a highway intersection, and the road side unit locates the positions of vehicle-mounted electronic tags B1, B2 and B3 within its communication range, wherein the positions of the vehicle-mounted electronic tags B1 and B2 are the same as the position of the vehicle A, and the position of the vehicle-mounted electronic tag B3 is different from the position of the vehicle A. The host computer can identify the vehicle-mounted electronic tags B1 and B2 as the vehicle-mounted electronic tags on the vehicle A, and then count the number of vehicle-mounted electronic tags on the vehicle A as 2.

[0059] Optionally, the position of the vehicle is represented by a position range, which can be a vehicle body area range of the vehicle, and the position of the vehicle-mounted electronic tag is represented by a position point. As shown in Figure 3 the position of the vehicle is a rectangular range in the figure, and three circular dots respectively represent the positions of three vehicle-mounted electronic tags. When the position point of the vehicle-mounted electronic tag is located within the position range of the vehicle, it is determined that the position of the vehicle-mounted electronic tag is the same as the position of the vehicle. For example, Figure 3 two circular dots located within the rectangular range represent the positions of the vehicle-mounted electronic tags which are the same as the position of the vehicle, and two circular dots located outside the rectangular range represent the positions of the vehicle-mounted electronic tags which are not the same as the position of the vehicle.

[0060] Optionally, the position of the vehicle and the position of the vehicle-mounted electronic tag are both represented by position points. For example, the center position of the vehicle can be taken as the position point of the vehicle, and the preset distance threshold can be taken as the radius of the circumscribed circle of the vehicle body area (rectangular area). When the position point of the vehicle-mounted electronic tag is not more than the preset distance threshold away from the position point of the vehicle, it is determined that the position of the vehicle-mounted electronic tag is the same as the position of the vehicle.

[0061] In some embodiments, in order to determine the identity of the vehicle, the above-mentioned identification method of the vehicle-mounted electronic tag further comprises:

[0062] acquiring a license plate image of the vehicle through a camera.

[0063] identifying a license plate number of the vehicle according to the license plate image.

[0064] storing the license plate number of the vehicle in association with the number of vehicle-mounted electronic tags on the vehicle.

[0065] The camera is connected to the host computer and is used to shoot the license plate image of the vehicle. The host computer can acquire the license plate image of the vehicle through the camera. The host computer can identify the license plate number in the license plate image through image recognition technology. After identifying the number of vehicle-mounted electronic tags on the vehicle, the host computer can store the license plate number of the vehicle in association with the number of vehicle-mounted electronic tags on the vehicle, so that the traffic management department can screen vehicles that evade tolls according to the stored information.

[0066] In some embodiments, the position of the vehicle can be obtained by radar or camera detection, and the position of the vehicle-mounted electronic tag can be obtained by communication between the road side unit and the vehicle-mounted electronic tag. In other embodiments, the position of the vehicle can also be obtained by fusing the perception data of the radar and the camera. Specifically, the host computer can obtain the first position of the vehicle through the radar and the second position of the vehicle through the camera, and then obtain the final position of the vehicle according to the first position and the second position, thereby improving the accuracy of the vehicle position detection.

[0067] As can be seen from the above, this application first obtains the vehicle's location and the location of the on-board electronic tags (OINs). Then, based on the vehicle's location and the location of the OINs, the number of OINs on the vehicle can be identified. When a vehicle exits the highway, the number of OINs installed on the vehicle can be quickly identified by the vehicle's location and the location of the OINs. Highway toll collectors can promptly detect vehicles with an abnormal number of OINs, effectively regulating vehicle owners' behavior and preventing them from evading tolls by installing multiple OINs on their vehicles.

[0068] Corresponding to the vehicle-mounted electronic tag identification method applied to the host computer provided above, this application embodiment also provides a host computer. Please refer to [link to relevant documentation]. Figure 4 The host computer 4 in this embodiment includes: a memory 401, and one or more processors 402. Figure 4 Only one is shown in the image, along with a computer program stored in memory 401 and executable on the processor. Memory 401 stores software programs and units. The processor 402 executes various functional applications and data processing by running the software programs and units stored in memory 401 to obtain resources corresponding to preset events. Specifically, the processor 402 implements the following by running the aforementioned computer program stored in memory 401: Figure 2 The identification method of the vehicle-mounted electronic tag in the corresponding embodiment.

[0069] It should be understood that, in the embodiments of this application, the processor 402 may be a central processing unit (CPU), but it may also be other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor, or any conventional processor, etc.

[0070] Memory 401 may include read-only memory and random access memory, and provides instructions and data to processor 402. Some or all of memory 401 may also include non-volatile random access memory. For example, memory 401 may also store device category information.

[0071] From the above, the application first acquires the position of the vehicle and the position of the vehicle-mounted electronic tag, and then according to the position of the vehicle and the position of the vehicle-mounted electronic tag, the number of vehicle-mounted electronic tags on the vehicle can be identified. When the vehicle is running at high speed, the number of vehicle-mounted electronic tags on the vehicle is quickly identified through the position of the vehicle and the position of the vehicle-mounted electronic tag, and the high-speed toll collector can timely find the vehicle with abnormal number according to the number of vehicle-mounted electronic tags on the vehicle, so as to effectively regulate the behavior of the vehicle owner and prevent the vehicle owner from evading tolls by installing multiple vehicle-mounted electronic tags on the vehicle.

[0072] Corresponding to the vehicle-mounted electronic tag identification method applied to the host computer provided in the above, the embodiment of the application further provides a computer readable storage medium, the computer readable storage medium stores a computer program, and the computer program is executed by a processor to realize the method as Figure 2 The steps of the vehicle-mounted electronic tag identification method in the corresponding embodiment.

[0073] Corresponding to the vehicle-mounted electronic tag identification method applied to the host computer provided in the above, the embodiment of the application further provides a computer program product, the computer program product includes a computer program, and the computer program is executed by one or more processors to realize the method as Figure 2 The steps of the vehicle-mounted electronic tag identification method in the corresponding embodiment.

[0074] Those skilled in the art can clearly understand that, for the convenience and brevity of description, only the division of the above functional units and modules is exemplified, and in actual application, the above functions can be completed by different functional units and modules according to needs, that is, the internal structure of the above device is divided into different functional units or modules to complete all or part of the functions described above. The functional units and modules in the embodiments can be integrated in one processing unit, or each unit can be physically present separately, or two or more units can be integrated in one unit. The integrated unit can be realized in the form of hardware or software. In addition, the specific names of each functional unit and module are only for easy distinction, and do not limit the protection scope of the application. The specific working process of the units and modules in the system can refer to the corresponding process in the foregoing method embodiments, which will not be repeated here.

[0075] In the above embodiments, the description of each embodiment has its own emphasis, and the parts not described or recorded in a certain embodiment can be referred to the related description of other embodiments.

[0076] Those skilled in the art can understand that the units and algorithm steps of each example described in combination with the embodiments disclosed herein can be realized by electronic hardware or a combination of external device software and electronic hardware. Whether the functions are realized in hardware or software manner depends on the specific application and design constraints of the technical solution. The skilled person can use different methods to realize the described functions for each specific application, but such implementation should not be considered beyond the scope of the present application.

[0077] In the embodiments provided in the present application, it should be understood that the disclosed apparatus and method can be implemented by other ways. For example, the system embodiments described above are only illustrative. For example, the division of the above modules or units is only a logical function division. In actual implementation, there can be another division manner. For example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the units or components shown or discussed can be indirect coupling or communication connection through some interfaces, devices or units, which can be electrical, mechanical or other forms.

[0078] The units described above as separate components can or can not be physically separate, and the components shown as units can or can not be physical units, that is, they can be located in one place, or can be distributed on a plurality of network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the embodiments.

[0079] The integrated units described above, if implemented in the form of software function units and sold or used as independent products, can be stored in a computer readable storage medium. Based on such understanding, all or part of the processes in the above-mentioned embodiment methods can also be implemented by a computer program instructing associated hardware, and the above-mentioned computer program can be stored in a computer readable storage medium. When the computer program is executed by a processor, the steps of the above-mentioned various method embodiments can be implemented. The computer program includes computer program code, which can be in the form of source code, object code, executable files or some intermediate forms, etc. The computer readable storage medium can include any entity or device capable of carrying the above-mentioned computer program code, recording medium, U disk, mobile hard disk, magnetic disk, optical disk, computer readable memory, read-only memory (ROM), random access memory (RAM), electrical carrier signal, telecommunication signal and software distribution medium, etc. It should be noted that the content included in the above-mentioned computer readable storage medium can be appropriately increased or decreased according to the requirements of legislation and patent practice in the jurisdiction, for example, in some jurisdictions, according to legislation and patent practice, the computer readable storage medium does not include electrical carrier signals and telecommunication signals.

[0080] The above embodiments are only used to illustrate the technical solutions of the present application, but not limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacements for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should be included in the protection scope of the present application.

Claims

1. A method of identifying an on-vehicle electronic tag, characterized by, The method comprises: acquiring a position of a vehicle; acquiring a position of an on-board electronic tag; identifying a number of on-board electronic tags on the vehicle according to the position of the vehicle and the position of the on-board electronic tag, comprising: identifying an on-board electronic tag having the same position as the vehicle as an on-board electronic tag on the vehicle; counting the number of on-board electronic tags on the vehicle, and issuing an alarm when the number of on-board electronic tags on the vehicle is more than two.

2. The method of claim 1, wherein the electronic tag is a RFID tag. The position of the vehicle is represented by a position range, and the position of the on-board electronic tag is represented by a position point; when the position point of the on-board electronic tag is within the position range of the vehicle, it is determined that the position of the on-board electronic tag is the same as the position of the vehicle.

3. The method of claim 1, wherein the vehicle-mounted electronic tag is a RFID tag. The position of the vehicle and the position of the on-board electronic tag are both represented by position points; when the position point of the on-board electronic tag is within a preset distance threshold from the position point of the vehicle, it is determined that the position of the on-board electronic tag is the same as the position of the vehicle.

4. The method of claim 1-3, wherein The identification method further comprises: acquiring a license plate image of the vehicle through a camera; identifying a license plate number of the vehicle according to the license plate image; storing the license plate number of the vehicle in association with the number of on-board electronic tags on the vehicle.

5. The method of claim 1-3, wherein The position of the vehicle is obtained through radar or camera detection, and the position of the on-board electronic tag is obtained through communication between a roadside unit and the on-board electronic tag.

6. A vehicle-mounted electronic tag identification system, characterized in that, The system comprises: a roadside unit for communicating with an on-board electronic tag to obtain the position of the on-board electronic tag; a radar for detecting the position of a vehicle; a host computer connected to the roadside unit and the radar, for receiving the position of the on-board electronic tag sent by the roadside unit and the position of the vehicle sent by the radar, and identifying the number of on-board electronic tags on the vehicle according to the position of the vehicle and the position of the on-board electronic tag, comprising: identifying an on-board electronic tag having the same position as the vehicle as an on-board electronic tag on the vehicle; counting the number of on-board electronic tags on the vehicle, and issuing an alarm when the number of on-board electronic tags on the vehicle is more than two.

7. The system for identifying an electronic tag of a vehicle according to claim 6, wherein The identification system further comprises: a camera connected to the host computer, for capturing a license plate image of the vehicle; the host computer is further configured to receive the license plate image sent by the camera, identify a license plate number of the vehicle according to the license plate image, and store the license plate number of the vehicle in association with the number of on-board electronic tags on the vehicle.

8. The system for identifying an electronic tag of a vehicle according to claim 6, wherein The host computer is further configured to perform time synchronization processing on the roadside unit and the radar.

9. A host computer, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, The processor executes the computer program to implement the method of any one of claims 1 to 5.

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