An ETC toll collection system testing device and method

Abstract

The present invention discloses an ETC toll collection system testing device and method. An ETC toll collection system testing device involved therein includes a support plate, a first connecting rod, a first support rod, a second support rod, a slider, and a slide rail; the slide rail is arranged on the support plate; one end of the first support rod is connected to the front end of the first connecting rod, and the other end of the first support rod is connected to one end of the slider; one end of the second support rod is connected to a position near the rear end of the first connecting rod, and the other end of the second support rod is connected to the other end of the slider; a test license plate is installed on the first support rod, and an on-vehicle unit OBU is installed at the rear end of the connecting rod; the slider is slidably connected to the slide rail so that the slider moves on the slide rail, thereby driving the test license plate and the on-vehicle unit OBU to move. The present invention assists in simulating various test scenarios, improves the accuracy of recognition rate and reliability testing in the ETC toll collection system, and reduces test risks and costs.

Description

Technical Field

[0001] The present invention relates to the technical field of toll collection systems, and in particular, to an ETC toll collection system testing device and method. Background Art

[0002] Currently, the ETC system is mainly set up at the ramps of highway toll stations and on highways. The ETC system on the highway is used for sectional billing and will achieve free flow toll collection in the long term. The ETC system on the ramp of the highway toll station is used for statistical billing and currently mainly assists the ETC system on the highway for accurate toll collection.

[0003] The OBU and license plate recognition rate are very important as the core indicators of the highway ETC toll collection system. As Figure 5 shown, in the existing ETC system, the detection method of the OBU and license plate recognition rate is to install an OBU with special information on the vehicle, and then multiple vehicles queue up and pass through the radar 11 and camera 12. By controlling the speeds of different vehicles and the distances between vehicles, the data is statistically compared with the background data to determine the accuracy rate. As shown in the above figure, the microwave radar 11 and camera 12 in the ETC toll collection system are set above the highway support frame or the ramp of the toll station. Two test vehicles pass through the microwave radar 11 and camera 12 at a certain distance and speed. The camera 12 is used to capture the license plate 13 of the leading vehicle and the license plate 15 of the following vehicle. The microwave radar 11 is used to communicate with the OBU 14 of the leading vehicle and the OBU 16 of the following vehicle to obtain data. By comparing the license plate obtained by the camera with the license plate obtained in the OBU, the accuracy rate and reliability are tested.

[0004] During the detection, it is necessary to keep the vehicles at different stepped speeds. The highest speed needs to reach and exceed 120 km / h, and a relatively close distance between multiple vehicles needs to be maintained to simulate the recognition rate and reliability of the ETC toll collection system under harsh conditions. The risk during the test is relatively high, and the communication and action matching between multiple vehicles are difficult. In many actual detections, in order to ensure safety, the distance between vehicles during high-speed operation has to be reduced, which is not convenient for accurately simulating the detection of the recognition rate and reliability of the ETC toll collection system under different conditions, especially when an accident occurs or there is a traffic jam on the highway. In addition, during the test, a large number of vehicles and personnel need to be mobilized, resulting in high test costs.

[0005] For example, the patent with the publication number CN202650404U discloses an ETC training device. It includes an intelligent vehicle, an RFID reader, and a PC. An RFID tag is provided on the intelligent vehicle. The RFID reader is used to read the information in the RFID tag and transmit it to the PC. A wireless receiving module is also provided on the intelligent vehicle. A USB camera is also provided on the intelligent vehicle. Although the above patent can simulate the non-stop toll collection system of the highway ETC, it cannot solve the problem of testing between multiple vehicles.

[0006] Therefore, it is necessary to conduct a new design on it to overcome the above deficiencies. Summary of the Invention

[0007] The object of the present invention is to address the deficiencies of the prior art and provide an ETC toll collection system testing device and method, which can assist in simulating various test scenarios, improve the accuracy of recognition rate and reliability testing in the ETC toll collection system, and reduce the test risk and cost.

[0008] To achieve the above object, the present invention adopts the following technical solutions:

[0009] An ETC toll collection system testing device includes a support plate, a first connecting rod, a first support rod, a second support rod, a slider, and a slide rail; the slide rail is arranged on the support plate; one end of the first support rod is connected to the front end of the first connecting rod, and the other end of the first support rod is connected to one end of the slider; one end of the second support rod is connected to a position near the rear end of the first connecting rod, and the other end of the second support rod is connected to the other end of the slider; a test license plate is installed on the first support rod, and an on-vehicle unit OBU is installed at the rear end of the connecting rod; the slider is slidably connected to the slide rail so that the slider moves on the slide rail, thereby driving the test license plate and the on-vehicle unit OBU to move.

[0010] Further, both the first support rod and the second support rod are telescopic support rods.

[0011] Further, one end of the support plate is connected to a second connecting rod, and the second connecting rod is connected to a towing vehicle.

[0012] Further, a warning light mounting plate is provided at the other end of the support plate, and a warning light is installed on the warning light mounting plate.

[0013] Further, one end of the first support rod is connected to the front end of the first connecting rod through a first connecting member; one end of the second support rod is connected to a position near the rear end of the first connecting rod through a second connecting member.

[0014] Further, a traction system is also provided at the other end of the support plate, and the traction system is used to drive the slider to move on the slide rail at a certain speed.

[0015] Correspondingly, an ETC toll collection system testing method is also provided, including:

[0016] S1. Install the test license plate on the first support rod and install the on-vehicle unit OBU at the rear end of the first connecting rod;

[0017] S2. Connect the rear end of the towing vehicle to one end of the second connecting rod; adjust the height of the first support rod to adjust the height of the test license plate from the ground; adjust the height of the second support rod to adjust the height of the on-vehicle unit OBU from the ground.

[0018] S3. The ETC toll collection system test device is driven by the towing vehicle to pass through the tested toll gate at a certain vehicle speed, and the traction system drives the slider to move forward on the slide rail, thereby driving the test license plate and the on-vehicle unit OBU to move forward to adjust the distance between the towing vehicle and the test license plate and the on-vehicle unit OBU.

[0019] S4. The pre-set camera captures the license plate image of the towing vehicle and the test license plate image, and uses the microwave radar to read the data of the on-vehicle unit OBU of the towing vehicle and the data of the on-vehicle unit OBU of the test vehicle.

[0020] S5. Repeat steps S2 - S4 to obtain multiple groups of license plate image information and data information of the on-vehicle unit OBU.

[0021] S6. Compare the obtained multiple groups of license plate image information and data information of the on-vehicle unit OBU to realize the test of the accuracy and reliability of the ETC toll collection system.

[0022] Further, in step S2, the connection between the rear end of the towing vehicle and one end of the second connecting rod further includes setting the distance L between the towing vehicle and the test license plate, where the value range of L is 0.2m to 3m.

[0023] Further, in step S2, the height H1 of the test license plate from the ground is adjusted, where the value range of H1 is 0.15m to 1.2m; the height H2 of the on-vehicle unit OBU from the ground is adjusted, where the value range of H2 is 0.4m to 4.5m.

[0024] Further, in step S3, the value range of the certain vehicle speed V is 4km / h to 40km / h or 40km / h to 140km / h.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] (1) The ETC toll collection system test device is fixed at the rear end of the towing vehicle. When the position of the slider on the slide rail can move back and forth, it drives the test license plate and the test OBU to move, so as to simulate the recognition rate and reliability in the ETC toll collection system under different distances between multiple vehicles.

[0027] (2) Both of the two support rods, the rear support rod is a telescopic support rod, and its height can be adjusted, so that the position heights of the test license plate and the test OBU can be adjusted, facilitating the simulation of the recognition rate and reliability tests for different types of vehicles.

[0028] (3) A traction system is provided at the rear end of the support plate, which can traction the slider and its upper structure to move back and forth on the slide rail at a certain speed, thereby adjusting the distance between the two vehicles and dynamically simulating the recognition rate and reliability in the ETC toll collection system under different spacings between multiple vehicles.

[0029] (4) Two groups of wheels are symmetrically arranged at the bottom rear of the support plate to support the support plate and its upper structure, making the support plate and its upper structure more stable during movement.

[0030] (5) When the vehicle is running at high speed on the lane for testing, the present invention can not only accurately simulate the working state of the ETC toll collection system under the conditions of following too closely, traffic jams and accidents during actual driving, but also reduce the test danger and the risk of rear-end collision, and can reduce the test vehicles and test personnel, reducing the test cost. Description of the Drawings

[0031] Figure 1 is a structural diagram of an ETC toll collection system testing device provided by Embodiment 1;

[0032] Figure 2 is a schematic diagram of the first support rod and the second support rod being telescopic support rods provided by Embodiment 1;

[0033] Figure 3 is a schematic diagram of the traction system provided by Embodiment 1;

[0034] Figure 4 is a schematic diagram of a towing vehicle towing an ETC toll collection system testing device provided by Embodiment 1;

[0035] Figure 5 is the detection method of the highway ETC toll collection system in the prior art;

[0036] Among them, 11. Radar; 12. Camera; 13. License plate of the leading vehicle; 14. OBU of the leading vehicle; 15. License plate of the following vehicle; 16. OBU of the following vehicle; 21. Second connecting rod; 22. Support plate; 23. Slider; 24. First support rod; 25. Second support rod; 26. Slide rail; 27. Test license plate; 28. First connector; 29. First connecting rod; 30. Second connector; 31. In-vehicle device OBU; 32. Warning light mounting plate; 33. Warning light; 41. Traction motor; 42. Conveyor belt; 43. Runner; 50. Wheel; 60. Towing vehicle. Detailed Embodiments

[0037] The following describes the embodiments of the present invention through specific examples. Those skilled in the art can easily understand the other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that, without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0038] The object of the present invention is to provide an ETC toll collection system testing device and method in view of the defects of the prior art.

[0039] Embodiment 1

[0040] This embodiment provides an ETC toll collection system testing device, as Figure 1 shown, including a support plate 22, a first connecting rod 29, a first support rod 24, a second support rod 25, a slider 23, a slide rail 26, a second connecting rod 21, a test license plate 27, an on-vehicle unit OBU 31, a warning light mounting plate 32, and a warning light 33.

[0041] Both the first support rod 24 and the second support rod 25 are vertically arranged with respect to the slider 23, and the first support rod 24 is parallel to the second support rod 25; one end of the first support rod 24 is fixedly connected to one end of the slider 23, and the other end of the first support rod 24 is connected to the front end of the first connecting rod 29 through a first connecting member 28; one end of the second support rod 25 is fixedly connected to the other end of the slider 23, and the other end of the second support rod 25 is connected to a position near the rear end of the first connecting rod 28 through a second connecting member 30.

[0042] The test license plate 27 is installed on the front side of the first support rod 24, and the on-vehicle unit OBU 31 is installed at the rear end position of the first connecting rod 29 and behind the second connecting member 30.

[0043] As Figure 2 shown, both the first support rod 24 and the second support rod 25 are telescopic support rods. When adjusting the height of the first support rod 24, the height of the test license plate 27 from the ground can be adjusted accordingly; when adjusting the height of the second support rod 25, the height of the on-vehicle unit OBU 31 from the ground can be adjusted accordingly. The position heights of the test license plate 27 and the on-vehicle unit OBU 31 in this embodiment can be adjusted, which is convenient for simulating and testing the recognition rate and reliability of different types and models of vehicles.

[0044] The height adjustment range of the first support rod 24 is 0.15 m to 1.2 m, and the height adjustment range of the second support rod 25 is 0.4 m to 4.5 m.

[0045] As Figure 1As shown, the support plate 22 is arranged at the bottom, the slide rail 26 is fixedly arranged above the support plate 22, the slider 23 is slidably connected to the slide rail 26. When the slider 23 moves back and forth on the slide rail 26, it can drive the first support rod 24 and the second support rod 25 fixedly connected thereto to move back and forth, and further drive the test license plate 27 and the on-vehicle unit OBU 31 to move back and forth, so as to simulate and test the recognition rate and reliability in the ETC toll collection system under different spacings between multiple vehicles.

[0046] As Figure 3 shown, a traction system is also provided for driving the slider 23 to move back and forth on the slide rail 26.

[0047] In this embodiment, the traction system includes a traction motor 41, a conveyor belt 42, and a runner 43. One end of the conveyor belt 42 is connected to the traction motor 41, the other side of the conveyor belt 42 is wound around the runner 43, and the conveyor belt 42 is connected to the slider 23. When the traction motor 41 is started, the traction motor 41 drives the runner 43 to rotate, and further drives the conveyor belt 42 to move, so that the slider 23 connected to the conveyor belt 42 slides on the slide rail at a certain speed. This traction system can traction the slider and its upper structure to move back and forth on the slide rail at a certain speed, so as to adjust the distance between two vehicles and dynamically simulate the recognition rate and reliability in the ETC toll collection system under different spacings between multiple vehicles.

[0048] It should be noted that the traction system in this embodiment is not limited to this, and this traction system can be selected according to the actual situation, as long as it can drive the slider to move on the slide rail.

[0049] As Figure 4 shown, one end of the second connecting rod 21 is connected to the front end of the support plate 22, and the other end of the second connecting rod 21 is connected to the rear part of the towing vehicle 60, so that the towing vehicle 60 drives the ETC toll collection system test device to move.

[0050] In this embodiment, the second connecting rod 21 is a non-metallic connecting rod. The reason for using a non-metal is to avoid the connecting rod triggering the ground coil in advance, so as to avoid the connecting rod interfering with the detection accuracy.

[0051] Two groups of wheels 50 are symmetrically arranged at the bottom near the rear end of the support plate 22 for supporting the support plate 22 and its upper structure, so that when the towing vehicle 60 drives the test device to move, the support plate 22 and its upper structure in the test device are more stable.

[0052] As Figure 1 shown, the warning light mounting plate 32 is vertically and fixedly arranged at the rear end of the support plate 22; the warning lights 33 are mounted on the warning light mounting plate 32, and the number of the warning lights 33 is multiple, and its purpose is to warn other people to stay away during the test.

[0053] Compared with the prior art, the present embodiment has the following beneficial effects:

[0054] (1) The ETC toll collection system testing device is fixed at the rear end of the towing vehicle. When the position of the slider on the slide rail can move back and forth, it drives the test license plate and the test OBU to move, so as to simulate the recognition rate and reliability in the ETC toll collection system under different spacings between multiple vehicles.

[0055] (2) Both of the two support rods, the rear support rod, are telescopic support rods, and their heights can be adjusted, so that the position heights of the test license plate and the test OBU can be adjusted, which is convenient for simulating the recognition rate and reliability tests for different types of vehicles.

[0056] (3) A traction system is arranged at the rear end of the support plate, which can traction the slider and its upper structure to move back and forth on the slide rail at a certain speed, so as to adjust the distance between the two vehicles and dynamically simulate the recognition rate and reliability in the ETC toll collection system under different spacings between multiple vehicles.

[0057] (4) Two groups of wheels are symmetrically arranged at the bottom end of the rear part of the support plate to support the support plate and its upper structure, making the support plate and its upper structure more stable during movement.

[0058] Embodiment Two

[0059] The present embodiment provides an ETC toll collection system testing method, which is implemented based on an ETC toll collection system testing device in Embodiment One.

[0060] Taking the ETC toll collection system on the highway toll ramp as an example, the testing method specifically includes:

[0061] S1. The test license plate is installed on the first support rod, and the on-vehicle unit OBU is installed at the rear end of the first connecting rod;

[0062] Before the test, first install the test license plate on the first support rod and install the on-vehicle unit OBU at the corresponding position at the rear end of the first connecting rod.

[0063] S2. The rear end of the towing vehicle is connected to one end of the second connecting rod; by adjusting the height of the first support rod, the height of the test license plate from the ground is further adjusted; by adjusting the height of the second support rod, the height of the on-vehicle unit OBU from the ground is further adjusted;

[0064] After the test license plate and in-vehicle OBU are installed, fix the ETC toll system test device to the rear end of the towing vehicle tightly through the second connecting rod, and keep a certain distance L between the test license plate and the rear of the towing vehicle. Then adjust the position height of the test license plate to H1 and the position height of the in-vehicle unit OBU to H2. Among them, the value range of L is 0.2m to 3m; the value range of H1 is 0.15m to 1.2m; the value range of H2 is 0.4m to 4.5m.

[0065] After the installation and adjustment are completed, close the selected lane and toll gate according to the test requirements to prevent vehicles other than the test from entering the test area.

[0066] S3. Driven by the towing vehicle, the ETC toll system test device passes through the toll ramp at a certain vehicle speed, and drives the slider to move forward on the slide rail through the traction system, thereby driving the test license plate and the in-vehicle unit OBU to move forward to adjust the distance between the towing vehicle and the test license plate and the in-vehicle unit OBU.

[0067] The towing vehicle pulls the ETC toll system test device to pass through the tested toll ramp at a certain vehicle speed V, and uses the traction system of the ETC toll system test device to drive the slider and the structure connected to the upper part of the slider to move forward on the slide rail at a certain speed, thereby adjusting the distance L. Among them, the value range of V is 4km / h to 40km / h.

[0068] It should be noted that the speed at which the motor drives the slider to slide in the traction system can be set according to the actual situation.

[0069] S4. The pre-set camera captures the license plate image of the towing vehicle and the test license plate image, and uses the microwave radar to read the data of the in-vehicle unit OBU of the towing vehicle and the data of the in-vehicle unit OBU of the test vehicle.

[0070] There are cameras and microwave radars installed on the toll gate. After the towing vehicle and the ETC toll system test device pass through the current toll gate, the cameras and microwave radars start to work. The cameras obtain the license plate image information of the towing vehicle and the test license plate image information on the ETC toll system test device, and the microwave radars read the data information of the in-vehicle unit OBU of the towing vehicle and the in-vehicle unit OBU on the ETC toll system test device, and save the obtained image information and data information.

[0071] S5. Repeat steps S2 - S4 to obtain multiple groups of license plate image information and data information of the in-vehicle unit OBU.

[0072] Repeat steps S2 - S4 n times. When repeating, different values of L, H1, H2, and V need to be set for testing. Among them, n times is preferably 50 to 250 times.

[0073] S6. Compare the obtained multiple groups of license plate image information and the data information of the on-vehicle unit OBU to achieve the test of the accuracy and reliability of the ETC charging system.

[0074] After the repeated execution is completed, multiple groups of license plate image information and the data information of the on-vehicle unit OBU will be obtained. Compare the license plate image information obtained by the camera and the vehicle information data in the OBU obtained by the microwave radar, and comprehensively consider the result output by the induction coil set on the toll ramp and the preset working state of the barrier machine to achieve the test of the accuracy and reliability of the ETC charging system.

[0075] Compared with the prior art, this embodiment has the following beneficial effects:

[0076] (1) The ETC charging system test device is fixed at the rear end of the towing vehicle. When the position of the slider on the slide rail can move back and forth, it drives the test license plate and the test OBU to move, so as to simulate the recognition rate and reliability in the ETC charging system under different distances between multiple vehicles.

[0077] (2) Adjust the height of the test license plate and the test OBU through the telescopic support rod, which is convenient for simulating the recognition rate and reliability tests for different types of vehicles.

[0078] (3) A traction system is provided at the rear end of the support plate, which can tow the slider and its upper structure to move back and forth on the slide rail at a certain speed, so as to adjust the distance between the two vehicles and dynamically simulate the recognition rate and reliability in the ETC charging system under different distances between multiple vehicles.

[0079] Embodiment Three

[0080] This embodiment provides an ETC charging system test method, which is implemented based on an ETC charging system test device in Embodiment One.

[0081] This embodiment takes the ETC charging system on the highway as an example for illustration. The test method specifically includes:

[0082] S1. Install the test license plate on the first support rod, and install the on-vehicle unit OBU at the rear end of the first connecting rod;

[0083] Before the test, first install the test license plate on the first support rod and install the on-vehicle unit OBU at the corresponding position at the rear end of the first connecting rod.

[0084] S2. Connect one end of the second connecting rod to the rear end of the towing vehicle; adjust the height of the test license plate from the ground by adjusting the height of the first support rod; adjust the height of the on-vehicle unit OBU from the ground by adjusting the height of the second support rod;

[0085] After the test license plate and in-vehicle OBU are installed, fix the ETC toll system test device at the rear end of the towing vehicle through the second connecting rod, and keep a certain distance L between the test license plate and the rear of the towing vehicle. Then adjust the position height of the test license plate to H1 and the position height of the in-vehicle unit OBU to H2. Among them, the value range of L is 0.2m to 3m; the value range of H1 is 0.15m to 1.2m; the value range of H2 is 0.4m to 4.5m.

[0086] After installation and adjustment are completed, close the selected lane according to the test requirements to prevent vehicles other than the test from entering the test area.

[0087] S3. Driven by the towing vehicle, the ETC toll system test device passes through the test lane at a certain vehicle speed, and drives the slider to move forward on the slide rail through the traction system, thereby driving the test license plate and the in-vehicle unit OBU to move forward to adjust the distance between the towing vehicle and the test license plate and the in-vehicle unit OBU.

[0088] The towing vehicle pulls the ETC toll system test device to pass through the test lane at a certain vehicle speed V, and uses the traction system of the ETC toll system test device to drive the slider and the structure connected to the upper part of the slider to move forward on the slide rail at a certain speed, thereby adjusting the distance L. Among them, the value range of V is 40km / h to 140km / h.

[0089] It should be noted that the speed at which the motor drives the slider to slide in the traction system can be set according to the actual situation.

[0090] S4. The pre-set camera captures the license plate image of the towing vehicle and the test license plate image, and uses the microwave radar to read the data of the in-vehicle unit OBU of the towing vehicle and the data of the in-vehicle unit OBU of the test vehicle.

[0091] There are cameras and microwave radars installed on the highway. When the towing vehicle and the ETC toll system test device pass through the current highway, the cameras and microwave radars start to work. The cameras obtain the license plate image information of the towing vehicle and the test license plate image information on the ETC toll system test device, and the microwave radars read the data information of the in-vehicle unit OBU of the towing vehicle and the in-vehicle unit OBU on the ETC toll system test device, and save the obtained image information and data information.

[0092] S5. Repeat steps S2 - S4 to obtain multiple groups of license plate image information and data information of the in-vehicle unit OBU.

[0093] Repeat steps S2 - S4 for n times. When repeating, different values of L, H1, H2, and V need to be set for testing respectively. Among them, n times is preferably 50 - 250 times.

[0094] S6. Compare the obtained multiple groups of license plate image information and the data information of the on - vehicle unit OBU to achieve the test of the accuracy and reliability of the ETC charging system.

[0095] After the repeated execution is completed, multiple groups of license plate image information and the data information of the on - vehicle unit OBU will be obtained. Compare the license plate image information obtained by the camera and the vehicle information data in the OBU obtained by the microwave radar to achieve the test of the accuracy and reliability of the ETC charging system.

[0096] Compared with the prior art, the present embodiment has the following beneficial effects:

[0097] (1) The ETC charging system testing device is fixed at the rear end of the towing vehicle. When the position of the slider on the slide rail can move back and forth, it drives the test license plate and the test OBU to move, thereby simulating the recognition rate and reliability in the ETC charging system under different distances between multiple vehicles.

[0098] (2) Adjust the height of the position of the test license plate and the test OBU through the telescopic support rod, which is convenient for simulating the recognition rate and reliability tests for different types of vehicles.

[0099] (3) A towing system is provided at the rear end of the support plate, which can tow the slider and its upper structure to move back and forth on the slide rail at a certain speed, thereby adjusting the distance between the two vehicles and dynamically simulating the recognition rate and reliability in the ETC charging system under different distances between multiple vehicles.

[0100] (4) When testing at high speed on the highway lane, the testing device and testing method of the present invention can not only accurately simulate the working state of the ETC charging system under the conditions of following too closely, traffic jams and accidents during actual driving, but also reduce the testing danger and the risk of rear - ending, and can reduce the number of test vehicles and test personnel, thus reducing the testing cost.

[0101] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Those skilled in the art of the present invention can make various modifications or supplements to the described specific embodiments or use similar ways to replace them, but will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. An ETC toll collection system testing device, characterized in that, it includes a support plate, a first connecting rod, a first support rod, a second support rod, a slider, and a slide rail; the slide rail is arranged on the support plate; one end of the first support rod is connected to the front end of the first connecting rod, and the other end of the first support rod is connected to one end of the slider; one end of the second support rod is connected to a position near the rear end of the first connecting rod, and the other end of the second support rod is connected to the other end of the slider; a test license plate is installed on the first support rod, and an on-vehicle unit OBU is installed at the rear end of the connecting rod; the slider is slidably connected to the slide rail so that the slider moves on the slide rail, thereby driving the test license plate and the on-vehicle unit OBU to move; One end of the support plate is connected to a second connecting rod, and the second connecting rod is connected to a towing vehicle.

2. The ETC toll collection system testing device according to claim 1, characterized in that, both the first support rod and the second support rod are telescopic support rods.

3. The ETC toll collection system testing device according to claim 1, characterized in that, a warning light mounting plate is provided at the other end of the support plate, and a warning light is installed on the warning light mounting plate.

4. The ETC toll collection system testing device according to claim 1, characterized in that, one end of the first support rod is connected to the front end of the first connecting rod through a first connecting member; one end of the second support rod is connected to a position near the rear end of the first connecting rod through a second connecting member.

5. The ETC toll collection system testing device according to claim 3, characterized in that, a traction system is further provided at the other end of the support plate, and the traction system is used to drive the slider to move on the slide rail at a certain speed.

6. An ETC toll collection system testing method, characterized in that, the testing method is based on the ETC toll collection system testing device according to any one of claims 1-5, and the testing method further includes: S1. The test license plate is installed on the first support rod, and the on-vehicle unit OBU is installed at the rear end of the first connecting rod; S2. The rear end of the towing vehicle is connected to one end of the second connecting rod; by adjusting the height of the first support rod, the height of the test license plate from the ground is adjusted; by adjusting the height of the second support rod, the height of the on-vehicle unit OBU from the ground is adjusted; S3. The ETC toll collection system testing device passes through the toll gate to be tested at a certain vehicle speed driven by the towing vehicle, and the traction system drives the slider to move forward on the slide rail, thereby driving the test license plate and the on-vehicle unit OBU to move forward to adjust the distance between the towing vehicle and the test license plate and the on-vehicle unit OBU; S4. The pre-set camera captures the license plate image of the towing vehicle and the test license plate image, and uses a microwave radar to read the data of the on-vehicle unit OBU of the towing vehicle and the data of the on-vehicle unit OBU of the test vehicle; S5. Repeat steps S2-S4 to obtain multiple groups of license plate image information and data information of the on-vehicle unit OBU; S6. Compare the obtained multiple groups of license plate image information and data information of the on-vehicle unit OBU to realize the test of the accuracy and reliability of the ETC toll collection system.

7. An ETC toll collection system testing method according to claim 6, characterized in that, in step S2, the rear end of the towing vehicle is connected to one end of the second connecting rod, and it further includes setting the distance L between the towing vehicle and the test license plate, where the value range of L is 0.2 m to 3 m.

8. An ETC toll collection system testing method according to claim 6, characterized in that, in step S2, the height H1 of the test license plate from the ground is adjusted, where the value range of H1 is 0.15 m to 1.2 m; the height H2 of the on-vehicle unit OBU from the ground is adjusted, where the value range of H2 is 0.4 m to 4.5 m.

9. An ETC toll collection system testing method according to claim 6, characterized in that, in step S3, the value range of a certain vehicle speed V is 4 km / h to 40 km / h or 40 km / h to 140 km / h.

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