WO2016165149A1

WO2016165149A1 - Vehicle speeding detection method and system

Info

Publication number: WO2016165149A1
Application number: PCT/CN2015/077194
Authority: WO
Inventors: 钟裕山
Original assignee: 深圳市润安科技发展有限公司
Priority date: 2015-04-14
Filing date: 2015-04-22
Publication date: 2016-10-20
Also published as: CN104809884A

Abstract

A vehicle speeding detection method and system, able to accurately and in all weathers detect whether vehicles along an entire road are speeding; the system comprises an electronic licence plate (202) attached onto a vehicle and used for sending an ultra-wideband pulse signal to at least three base stations (2041, 2042, 2043, 2044); at least three interconnected and synchronised base stations (2041, 2042, 2043, 2044) positioned on the road to be tested and used for receiving the ultra-wideband pulse signal sent by the electronic licence plate (202), and sending the timing of the reception of the ultra-wideband pulse signal to a positioning server (201); and a positioning server (201), used for positioning the vehicle to which the electronic licence plate (202) is attached on the basis of a positioning algorithm and the timing of the reception of the ultra-wideband pulse signal received by the at least three base stations (2041, 2042, 2043, 2044), and, on the basis of the positioning results and the speed limit on the road to be tested, determining whether the vehicle to which the electronic licence plate (202) is attached is speeding. The present system can monitor vehicle speed along an entire road, thereby achieving vehicle speed detection, has high positioning accuracy, and can accurately detect whether a vehicle is speeding, increasing the accuracy of detection.

Description

Vehicle overspeed detecting method and system

[0001] The present invention belongs to the field of intelligent transportation, and in particular, to a method and system for detecting an overspeed of a vehicle.

Background technique

[0002] In recent years, with the rapid growth of automobile ownership in China's cities, the situation of vehicle overspeed has become increasingly prominent.

Although the relevant departments have formulated quite strict laws and regulations, the traffic control department also strictly enforces these laws and regulations.

However, the speeding of vehicles is still prohibitive. Vehicle overspeed is not only a legal violation, but also discredited the image of the city. What is more serious is that the vehicle is overspeeding, which is often the cause of traffic accidents. Therefore, the industry has studied the detection and punishment of vehicle speeding.

[0003] A conventional vehicle overspeed detection system is implemented by a speed measurement system installed on a road node. However, the main drawback of this solution is that the vehicle speed measurement can only be performed at the fixed point position, and the speed monitoring of the entire road cannot be performed. Another existing vehicle overspeed detection system is implemented by an onboard GPS speed measurement system. However, the main drawback of this solution is that the GPS speed measurement system only obtains the speed value, and it also needs other equipment to transmit speed information to the monitoring center.

technical problem

[0004] An object of the present invention is to provide a vehicle overspeed detecting method and system for accurately detecting whether a vehicle on an entire road is overspeeded around the clock. Problem solution

Technical solution

[0005] A first aspect of the present invention provides a vehicle overspeed detecting system, the system comprising a positioning server, an electronic license plate attached to the vehicle, and at least three interconnected and synchronized base stations located on the road section to be tested;

[0006] the electronic license plate is configured to send an ultra-wideband pulse signal to the at least three base stations;

[0007] the base station is configured to receive an ultra-wideband pulse signal sent by the electronic license plate, and send an engraving of receiving the ultra-wideband pulse signal to the positioning server;

[0008] the positioning server is configured to locate a vehicle to which the electronic license plate is attached according to a positioning algorithm and an engraving of the at least three base stations each receiving the ultra-wideband pulse signal, and according to the positioning result and the The speed limit of the vehicle on the speed section to be measured determines whether the vehicle to which the electronic license plate is attached is overspeeded.

In combination with the first aspect, in a first possible implementation manner of the first aspect, the at least three base stations are connected by using a wired network or a wireless network, where the wired network includes a fiber network and a twisted pair. One of Ethernet composed of Ethernet and coaxial cable, the wireless network includes one of a WiFi network, a 3G network, a 4G network, and a 5G network.

[0010] With reference to the first aspect, in a second possible implementation manner of the first aspect, the base station and the positioning server are connected by using a wired network or a wireless network, where the wired network includes a fiber network.

One of Ethernet, which is composed of a twisted pair of Ethernet and a coaxial cable, and the wireless network includes one of a WiFi network, a 3G network, a 4G network, and a 5G network.

[0011] In combination with the first aspect, in a third possible implementation manner of the first aspect, the positioning server is directly connected to one of the at least three base stations or the multiple base stations, or the positioning server passes The data switching device connects one of the at least three base stations or a plurality of base stations.

[0012] With reference to the first aspect, in a fourth possible implementation manner of the first aspect, the positioning algorithm comprises: performing one of a diurnal TOA algorithm and an inter-turn difference TDOA algorithm.

[0013] A second aspect of the present invention provides a vehicle overspeed detecting method, where the method includes:

[0014] The electronic license plate sends an ultra-wideband pulse signal to at least three base stations, the electronic license plate is attached to the vehicle, the at least three base stations are interconnected and synchronized, and the at least three base stations are located on the road section to be tested;

[0015] the base station receives the ultra-wideband pulse signal sent by the electronic license plate, and sends the engraving of receiving the ultra-wideband pulse signal to the positioning server;

[0016] the positioning server locates the vehicle to which the electronic license plate is attached according to the positioning algorithm and the engraving of the ultra-wideband pulse signal by each of the at least three base stations, and according to the positioning result and the speed section to be tested The speed limit of the vehicle on the vehicle determines whether the vehicle to which the electronic license plate is attached is overspeed.

[0017] With reference to the second aspect, in a first possible implementation manner of the second aspect, the positioning algorithm includes one of a dimming TOA algorithm and a inter-turn difference TDOA algorithm.

[0018] With reference to the second aspect, in a second possible implementation manner of the second aspect, the determining, by the positioning result and the speed limit of the vehicle on the road segment to be measured, whether the vehicle attached to the electronic license plate is overspeed, The method includes: [0019] performing speed measurement on a vehicle to which the electronic license plate is attached according to a positioning result;

[0020] comparing the speed measurement result with a speed limit of the vehicle on the road section to be measured; [0021] If the speed measurement result is greater than the vehicle speed limit on the road section to be measured, it is determined that the vehicle to which the electronic license plate is attached has been overspeeded.

[0022] In combination with the second aspect, in a third possible implementation manner of the second aspect, the at least three base stations are connected by using a wired network or a wireless network, and the base station and the positioning server are used. a wired network interconnection or a wireless network interconnection, the wired network comprising one of an Ethernet network composed of a fiber network, a twisted pair cable, and a coaxial cable, the wireless network including a WiFi network, a 3G network, a 4G network, and In one of the 5G networks, the positioning algorithm includes one of the inter-turn TOA algorithm and the inter-difference TDOA algorithm.

[0023] With reference to the second aspect, in a fourth possible implementation manner of the second aspect, the positioning server is directly connected to one of the at least three base stations or the multiple base stations, or the positioning server passes The data switching device connects one of the at least three base stations or a plurality of base stations.

Advantageous effects of the invention

Beneficial effect

[0024] It can be seen from the above technical solution of the present invention that the positioning server can locate the vehicle to which the electronic license plate is attached according to the positioning algorithm and the engraving of each of the at least three base stations to receive the ultra-wideband pulse signal, and according to the positioning result and The speed limit of the vehicle on the road section to be measured determines whether the vehicle to which the electronic license plate is attached is overspeeded. Compared with the existing speed measuring system installed by relying on road nodes, the technical solution provided by the invention can monitor the speed of the entire road and realize the real vehicle overspeed detection, and compared with the vehicle GPS speed measuring system, since the electronic license plate is sent The ultra-wideband pulse signal, the technical solution provided by the invention has high positioning precision, can accurately detect whether the vehicle is overspeeded, and improves the detection accuracy.

Brief description of the drawing

DRAWINGS

1 is a schematic flowchart showing an implementation process of a vehicle overspeed detecting method according to Embodiment 1 of the present invention;

2 is a schematic structural diagram of a vehicle overspeed detecting system according to Embodiment 2 of the present invention.

Embodiments of the invention

[0027] In order to make the objects, technical solutions and beneficial effects of the present invention more clear, the following The present invention will be further described in detail. It is understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0028] An embodiment of the present invention provides a vehicle overspeed detecting system, where the system includes a positioning server, an electronic license plate attached to the vehicle, and at least three interconnected and synchronized base stations located on the road section to be measured; And transmitting, by the base station, an ultra-wideband pulse signal sent by the electronic license plate, and transmitting an engraving of receiving the ultra-wideband pulse signal to the a positioning server, configured to locate a vehicle to which the electronic license plate is attached according to a positioning algorithm and an engraving of the at least three base stations each receiving the ultra-wideband pulse signal, and according to the positioning result and the The speed limit of the vehicle on the speed section to be measured determines whether the vehicle to which the electronic license plate is attached is overspeeded. Embodiments of the present invention also provide a corresponding method for detecting an overspeed of a vehicle. The details are explained below.

1 is a schematic flowchart of an implementation process of a vehicle overspeed detecting method according to Embodiment 1 of the present invention.

The method mainly includes the following steps S101 to S103:

[0030] S101. The electronic license plate sends an ultra-wideband pulse signal to at least three base stations.

[0031] In the embodiment of the present invention, the electronic license plate is attached to a certain position of the vehicle, for example, a windshield, a side window glass or a door, and the like, and the present invention does not limit the specific position of the electronic license plate attached to the vehicle. .

[0032] It should be noted that the electronic license plate sends an ultra-wideband pulse signal to at least three base stations, which uses a nanosecond non-sinusoidal narrow pulse to transmit data, has a frequency bandwidth, multiple channels, low power consumption, and is not easy to interfere. High safety factor, coexistence with existing spectrum (ie, does not interfere with existing and future ultra-wideband communication applications), so it is possible to attach high-speed mobile electronic license plates with high-precision positioning, and then attach electronic license plates. The high-precision positioning of the vehicle enhances the stability of the positioning.

[0033] It should be noted that, in the embodiment of the present invention, at least three base stations are deployed on the road segment to be tested, and the base stations are interconnected and synchronized, and the interconnection method may be wired network interconnection or wireless network interconnection, where the wireless network Including one of a WiFi network, a 3G network, a 4G network, and a 5G network, the positioning algorithm includes a Time Of Arrival (TOA) algorithm and a Time Difference Of Arrival (TDOA) algorithm. Kind. As for the synchronization between the base stations, the base station connected to the positioning server by any one of the at least three base stations may send synchronization pulses to the other at least two base stations, thereby completing synchronization between the base station and the other at least two base stations. [0034] S102. The base station receives the ultra-wideband pulse signal sent by the electronic license plate, and sends the engraving of receiving the ultra-wideband pulse signal to the positioning server.

In the embodiment of the present invention, the positioning server directly connects one of the at least three base stations or the plurality of base stations, or the positioning server connects one of the at least three base stations or the plurality of base stations through the data switching device. The positioning server connects one of the at least three base stations or the plurality of base stations through the data switching device, and includes the following four connection modes:

[0036] Manner 1: The base station and the base station are connected by a network cable, and one or more base stations are connected to the data distribution port of the router through a network cable, and the data distribution port of the router is connected to the positioning server through the network cable;

[0037] Manner 2: a network cable is connected between the base station and the base station, and one or more base stations are connected to the data distribution port of the switch through the network cable, and the data distribution port of the switch is connected to the positioning server through the network cable;

[0038] Method 3: The optical connection is used between the base station and the base station, and one or more base stations are connected to the input end of the optical transceiver through the optical fiber, and the output end of the optical transceiver is connected to the positioning server through the network cable;

[0039] Method 4: A fiber connection is used between the base station and the base station, and one or more base stations are connected to the input end of the optical transceiver through the optical fiber, and the output end of the optical transceiver is connected to the positioning server through the network cable.

[0040] For the case where the positioning server is directly connected to one of the at least three base stations or the plurality of base stations, the base station transmitting the address of receiving the ultra-wideband pulse signal to the positioning server may be: at least two of the at least three base stations The base station transmits the engraving of the ultra-wideband pulse signal respectively sent by the electronic license plate to any one of the three base stations, and the engraving of each of the base stations receiving the ultra-wideband pulse signal is directly sent to the positioning server, or And each of the at least three base stations directly sends the engraving of the ultra-wideband pulse signal sent by the electronic license plate to the positioning server; and the positioning server connects one of the at least three base stations or the plurality of base stations through the data switching device. In this case, the base station transmitting the address of receiving the ultra-wideband pulse signal to the positioning server may be: at least two of the at least three base stations transmitting the engraving of the ultra-wideband pulse signal respectively sent by the electronic license plate to the three base stations. Any one of the base stations, each of which will be each The engraving of the base station receiving the ultra-wideband pulse signal is sent to the positioning server through the data exchange device, or each of the at least three base stations sends the engraving of the ultra-wideband pulse signal sent by the respective electronic license plate to the positioning through the data exchange device. server.

[0041] S103. The positioning server receives the ultra-wideband pulse signal according to the positioning algorithm and each of the at least three base stations. The vehicle to which the electronic license plate is attached is inspected, and whether the vehicle to which the electronic license plate is attached is overspeeded according to the positioning result and the speed limit of the vehicle on the speed section to be measured.

[0042] In the embodiment of the present invention, the positioning algorithm includes one of a TOA algorithm and a TDOA algorithm. As an embodiment of the present invention, determining whether the vehicle attached to the electronic license plate is overspeed according to the positioning result and the speed limit of the vehicle on the speed section to be tested may include the following steps S1031 to S1033:

[0043] S1031: Perform speed measurement on the vehicle to which the electronic license plate is attached according to the positioning result.

[0044] In the embodiment of the present invention, the vehicle attached to the electronic license plate is positioned at different times to obtain the speed. For example, the vehicle with the electronic license plate attached at tl is located at the position P1, and the vehicle with the electronic license plate attached at the moment t2 is located at the position P2, according to the distance between P2 and P1 and the 吋差 difference It2-tll The speed of the vehicle to which the electronic license plate is attached can be measured.

[0045] S1032: Compare the speed measurement result with a speed limit of the vehicle on the road section to be measured.

[0046] The speed limit of the vehicle on the road section to be measured is the maximum speed at which the vehicle on the road section to be tested is allowed to travel, and this value may be pre-stored in the database of the positioning server.

[0047] S1033, if the speed measurement result is greater than the vehicle speed limit on the road section to be measured, it is determined that the vehicle attached to the electronic license plate has been overspeeded.

[0048] It can be seen from the vehicle overspeed detecting method illustrated in FIG. 1 above that the positioning server can locate the vehicle to which the electronic license plate is attached according to the positioning algorithm and the engraving of the at least three base stations each receiving the ultra-wideband pulse signal. And determining, according to the positioning result and the speed limit of the vehicle on the road section to be measured, whether the vehicle to which the electronic license plate is attached is overspeeded. Compared with the existing speed measuring system installed by relying on road nodes, the technical solution provided by the invention can monitor the speed of the entire road and realize the real vehicle overspeed detection, and compared with the vehicle GPS speed measuring system, since the electronic license plate is sent The ultra-wideband pulse signal, the technical solution provided by the invention has high positioning precision, can accurately detect whether the vehicle is overspeeded, and improves the detection accuracy.

2 is a schematic structural diagram of a vehicle overspeed detecting system according to Embodiment 2 of the present invention. For ease of explanation, Figure 2 only shows portions relevant to embodiments of the present invention. The vehicle overspeed detection system illustrated in FIG. 2 mainly includes a positioning server 201, an electronic license plate 202 attached to the vehicle, and at least three interconnected and synchronized base stations 204 (only four base stations of the base stations 2041 to 2044 are illustrated in the figure), wherein :

[0050] The electronic license plate 202 is configured to send an ultra-wideband pulse signal to the at least three base stations 2041 to 204n.

[0051] In the embodiment of the present invention, the electronic license plate 202 is attached to a certain position of the vehicle, for example, a windshield, The position of the side window glass or the door is not limited to the specific position of the electronic license plate 202 attached to the vehicle.

[0052] It should be noted that the electronic license plate 202 transmits an ultra-wideband pulse signal to at least three base stations 2041 to 204n, which uses a nanosecond non-sinusoidal narrow pulse to transmit data, has a frequency bandwidth, multiple channels, and low power. It is characterized by high consumption, non-interference, high safety factor, and ability to coexist with existing spectrum (that is, it does not interfere with existing and future ultra-wideband communication applications). Therefore, it is possible to accurately position high-speed moving electronic license plates. High-precision positioning of vehicles with electronic license plates, and enhanced positioning stability

[0053] It should be noted that, in the embodiment of the present invention, at least three base stations 2041 to 204n are interconnected and synchronized, and the interconnection method may be a wired network interconnection or a wireless network interconnection, where the wireless network includes a WiFi network, a 3G network, In one of a 4G network and a 5G network, the positioning algorithm includes one of a diurnal TOA algorithm and a inter-difference TDOA algorithm. As for the synchronization between the base stations, the base station connected to the positioning server 201 by any one of the at least three base stations 2041 to 204n may send a synchronization pulse to the other at least two base stations, thereby completing the relationship between the base station and the other at least two base stations. Synchronization, for example, in FIG. 2, is that the base station 2041 connected to the positioning server 201 transmits synchronization pulses to the base stations 2042 to 2044, thereby completing synchronization between the base station 2041 and the base stations 2042 to 2044.

[0054] The base stations 2041 to 204n are configured to receive the ultra-wideband pulse signal sent by the electronic license plate 202, and send the engraving of receiving the super-wideband pulse signal to the positioning server.

In the embodiment of the present invention, the base stations 2041 to 204n are deployed on the road segment to be measured, and the positioning server 201 directly connects one of the at least three base stations 2041 to 204n or a plurality of base stations, or the positioning server 201 performs data exchange. The device connects one of the at least three base stations 2041 to 204n or a plurality of base stations. The positioning server 201 connects one of the at least three base stations 2041 to 204n or the plurality of base stations through the data switching device to include the following four connection methods:

[0056] Manner 1: The base station and the base station are connected by a network cable, and one or more base stations are connected to the data distribution port of the router through a network cable, and the data distribution port of the router is connected to the positioning server through the network cable;

[0057] Method 2: The base station and the base station are connected by using a network cable, and one or more base stations are connected to the data distribution port of the switch through the network cable, and the data distribution port of the switch is connected to the positioning server through the network cable;

[0058] Method 3: A fiber connection is used between the base station and the base station, and one or more base stations are connected to the optical end through the optical fiber. The input end of the machine, the output end of the optical transceiver is connected to the positioning server through a network cable;

[0059] Method 4: A fiber connection is used between the base station and the base station, and one or more base stations are connected to the input end of the optical transceiver through the optical fiber, and the output end of the optical transceiver is connected to the positioning server through the network cable.

[0060] For the case where the positioning server 201 directly connects one of the at least three base stations 2041 to 204n or a plurality of base stations, the base station transmits the address of receiving the ultra-wideband pulse signal to the positioning server 201, which may be: at least three base stations At least two base stations 2041 to 204n transmit the etch of each of the super-wideband pulse signals transmitted by the electronic license plate to any one of the three base stations, and each of the base stations receives the ultra-wideband pulse signal from each of the base stations. Or directly sent to the positioning server, or each of the at least three base stations 204 1 to 204 n directly sends the engraving of the ultra-wideband pulse signal sent by the electronic license plate to the positioning server 201; for the positioning server 201 through the data exchange When the device is connected to one of the at least three base stations 2 041 to 204n or the plurality of base stations, the base station transmitting the address of receiving the ultra-wideband pulse signal to the positioning server 201 may be: at least three of the at least three base stations 2041 to 204n Two base stations will each receive an ultra-wideband pulse signal sent by an electronic license plate The engraving is transmitted to any one of the three base stations, and the engraving of receiving the ultra-wideband pulse signal by each of the base stations is transmitted to the positioning server 201 through the data exchange device, or at least three base stations 2041 to 204n. Each base station transmits an engraving of the ultra-wideband pulse signal respectively transmitted by the electronic license plate to the positioning server 201 through the data exchange device.

[0061] The positioning server 201 is configured to locate the vehicle that describes the electronic license plate 201 according to the positioning algorithm and the at least three base stations 2041 to 204n receiving the ultra-wideband pulse signal, and according to the positioning result and the speed segment to be measured The vehicle speed limit determines whether the vehicle to which the electronic license plate 201 is attached is overspeeded.

In the embodiment of the present invention, the positioning algorithm includes one of a ΤΟΑ algorithm and a TDOA algorithm, and the positioning server 201 determines whether the vehicle attached to the electronic license plate 202 is overspeed according to the positioning result and the speed limit of the vehicle on the speed section to be tested. The following steps are implemented in steps S2031 to S2033:

[0063] S2031: Perform speed measurement on the vehicle to which the electronic license plate is attached according to the positioning result.

[0064] In the embodiment of the present invention, the positioning server 201 locates the vehicle to which the electronic license plate 202 is attached at different times, and the speed thereof can be obtained. For example, the vehicle to which the electronic license plate 202 is attached at tl is located at the position P1, and the vehicle to which the electronic license plate 202 is attached at the time t2 is located at the position P2, according to the distance between P2 and P1 and the nicking difference It2- T1 Qing can measure the speed of the vehicle to which the electronic license plate 202 is attached. [0065] S2032: Compare the speed measurement result with a speed limit of the vehicle on the road section to be measured.

[0066] The speed limit of the vehicle on the road section to be measured is the maximum speed allowed for the vehicle on the road section to be measured, and this value may be pre-stored in the database of the positioning server.

[0067] S2033, if the speed measurement result is greater than the vehicle speed limit on the road section to be measured, it is determined that the vehicle to which the electronic license plate is attached has been overspeeded.

In the embodiment of the present invention, if the positioning server 201 determines that the vehicle attached to the electronic license plate 202 is overspeeded according to the positioning result and the speed limit of the vehicle on the speed section to be measured, the overspeed vehicle is recorded or uploaded to the traffic control department. The traffic control department will carry out corresponding law enforcement treatment.

[0069] It should be noted that the information interaction, the execution process, and the like between the modules/units of the foregoing device are based on the same concept as the method embodiment of the present invention, and the technical effects thereof are the same as the embodiment of the method of the present invention. For details, refer to the description in the method embodiment of the present invention, and details are not described herein again.

[0070] Those skilled in the art can understand that all or part of the various methods of the foregoing embodiments can be completed by a program to instruct related hardware, and the program can be stored in a computer readable storage medium, the storage medium. These may include: Read Only Memory (ROM), Random Access Memory (RAM), disk or optical disk, and the like.

[0071] The vehicle overspeed detecting method and system provided by the embodiments of the present invention are described in detail above. The principles and implementation manners of the present invention are described herein by using specific examples. The description of the above embodiments is only for helping understanding. The method of the present invention and its core idea; at the same time, those skilled in the art, according to the idea of the present invention, there will be changes in the specific implementation manner and the scope of application, in summary, the contents of this specification are not It should be understood that the invention is limited.

Claims

Claim

A vehicle overspeed detecting system, characterized in that the system comprises a positioning server, an electronic license plate attached to the vehicle, and at least three interconnected and synchronized base stations located on the road section to be tested;

The electronic license plate is configured to send an ultra-wideband pulse signal to the at least three base stations; the base station is configured to receive an ultra-wideband pulse signal sent by the electronic license plate, and receive the engraving of the ultra-wideband pulse signal Sent to the location server;

The positioning server is configured to locate a vehicle to which the electronic license plate is attached according to a positioning algorithm and a moment when the at least three base stations respectively receive the ultra-wideband pulse signal, and according to the positioning result and the speed section to be tested The speed limit of the vehicle on the vehicle determines whether the vehicle to which the electronic license plate is attached is overspeed.

The system according to claim 1, wherein the at least three base stations are interconnected by a wired network or a wireless network, and the wired network comprises a fiber network, an Ethernet composed of twisted pairs, and a coaxial cable. One of the Ethernet networks, the wireless network includes one of a WiFi network, a 3G network, a 4G network, and a 5G network.

The system according to claim 1, wherein the base station and the positioning server are interconnected by a wired network or a wireless network, and the wired network comprises an optical network, an Ethernet and a coaxial cable. One of the Ethernets composed of cables, the wireless network including one of a WiFi network, a 3G network, a 4G network, and a 5G network.

The system according to claim 1, wherein the positioning server is directly connected to one of the at least three base stations or the plurality of base stations, or the positioning server is connected to the at least three by a data switching device. One base station or multiple base stations in a base station. The system according to claim 1, wherein said positioning algorithm comprises reaching a daytime

The TOA algorithm and one of the TDOA algorithms that achieve the inter-turn difference.

A method for detecting an overspeed of a vehicle, characterized in that the method comprises:

The electronic license plate sends an ultra-wideband pulse signal to at least three base stations, the electronic license plate is attached to the vehicle, the at least three base stations are interconnected and synchronized, and the at least three base stations are located on the road section to be tested; Receiving, by the base station, the ultra-wideband pulse signal sent by the electronic license plate, and transmitting the engraving of receiving the ultra-wideband pulse signal to a positioning server;

The positioning server locates a vehicle to which the electronic license plate is attached according to a positioning algorithm and a moment when the at least three base stations respectively receive the ultra-wideband pulse signal, and according to the positioning result and the vehicle on the road segment to be measured The speed limit determines whether the vehicle to which the electronic license plate is attached is overspeeded.

[Claim 7] The method according to claim 6, wherein the positioning algorithm includes reaching the daytime

[Claim 8] The method according to claim 6, wherein the determining whether the vehicle attached to the electronic license plate is overspeed according to the positioning result and the speed limit of the vehicle on the speed section to be measured includes

Measuring the speed of the vehicle to which the electronic license plate is attached according to the positioning result;

Comparing the speed measurement result with a speed limit of the vehicle on the road section to be measured;

If the speed measurement result is greater than the vehicle speed limit on the road section to be measured, it is determined that the vehicle to which the electronic license plate is attached has been overspeeded.

[Claim 9] The method according to claim 6, wherein the at least three base stations are connected by a wired network or a wireless network, and the base station and the positioning server are connected by a wired network or Wireless network interconnection, the wired network includes one of an Ethernet network composed of a fiber network, a twisted pair cable, and a coaxial cable, and the wireless network includes a WiFi network, a 3G network, a 4G network, and a 5G network. One.

[Claim 10] The method according to claim 6, wherein the positioning server is directly connected to one of the at least three base stations or a plurality of base stations, or the positioning server is connected by using a data exchange device. One of the at least three base stations or a plurality of base stations.