A separate electronic license plate system and pairing method thereof

Abstract

The present invention relates to a separate electronic license plate system and a pairing method thereof, wherein the system comprises a separate vehicle-mounted controller and an electronic license plate; the vehicle-mounted controller comprises a vehicle-mounted main controller and a main control power supply circuit electrically connected to the vehicle-mounted main controller, a first communication module and a second communication module; the electronic license plate comprises a license plate controller and a license plate display screen electrically connected to the license plate controller, a third communication module and a license plate power supply circuit; a communication channel is established between the second communication module and the third communication module; a license plate power supply circuit is provided with a license plate power supply interface and / or a license plate power supply battery; the license plate power supply interface is used to supply power to the electronic license plate by connecting a car light power supply line, or / and is used to charge the license plate power supply battery by connecting a car light power supply line or an external power supply. The present invention can provide a long-term stable power supply for the electronic license plate without complicated installation conditions, and can ensure the normal operation of the electronic license plate.

Description

Technical Field

[0001] The present invention relates to the technical field of license plates, and in particular to a separate electronic license plate system and a pairing method thereof. Background Art

[0002] In addition to display functions, electronic license plates in the prior art usually have strong wireless communication capabilities. At the same time, due to the need for long-term wireless communication, the power consumption of electronic license plates is relatively high, and a long-term stable power supply is required. In order to provide a long-term stable power supply for the electronic license plate, it is usually necessary to use the power supply in the car. The electronic license plate is usually installed in a specific position at the front and rear of the car. If a long-term stable power supply is to be provided for it, a complex installation process is required to connect the power supply in the car to the electronic license plate. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a separate electronic license plate system and a pairing method thereof, which can provide a long-term stable power supply for the electronic license plate without complicated installation conditions and can ensure the normal operation of the electronic license plate.

[0004] The technical solution of the present invention to solve the above technical problems is as follows: a separate electronic license plate system, including a separate vehicle-mounted controller and an electronic license plate;

[0005] The vehicle-mounted controller includes a vehicle-mounted main controller, a main control power supply circuit electrically connected to the vehicle-mounted main controller, a first communication module and a second communication module;

[0006] The electronic license plate includes a license plate controller, a license plate display screen electrically connected to the license plate controller, a third communication module and a license plate power supply circuit;

[0007] The second communication module matches the third communication module, and a communication channel is established between the second communication module and the third communication module;

[0008] The license plate power supply circuit is provided with a license plate power supply interface and / or a license plate power supply battery;

[0009] The license plate power supply interface is used to supply power to the electronic license plate by connecting to a headlight power supply line, and / or is used to charge the license plate power supply battery by connecting to a headlight power supply line or an external power source;

[0010] The license plate power supply battery is used to supply power to the electronic license plate through a license plate power supply circuit.

[0011] The beneficial effects of the present invention are as follows: a separate electronic license plate system of the present invention adopts a method of separating the on-board controller and the electronic license plate, and the on-board controller can be powered by the internal power supply of the car to complete the wireless communication and control functions that consume a long time of power; and the electronic license plate can be installed in a specific position at the front or rear of the car, and the electronic license plate is powered by its own internal battery or by the car light power supply or license plate light power supply; such a separate electronic license plate greatly reduces the difficulty of installing the electronic license plate, and even if the electronic license plate is powered by its own battery, it can support one to two years of normal use.

[0012] Based on the above technical solution, the present invention can also be improved as follows.

[0013] Furthermore, the main control power supply circuit is equipped with a 12V power input interface, and the 12V power input interface is used to supply power to the vehicle controller by connecting to a car power supply.

[0014] Further, the license plate power supply interface includes a vehicle power supply interface and / or a USB power supply interface;

[0015] The USB power supply interface is also used to power the electronic license plate by connecting to an external power source, or / and is used to charge the license plate power supply battery by connecting to an external power source.

[0016] Furthermore, the communication channel between the second communication module and the third communication module is specifically a wireless communication channel, and the communication protocol adopted by the wireless communication channel is any one of the Bluetooth protocol, the 2.4G communication protocol and the Zigebee communication protocol.

[0017] Furthermore, the license plate display screen includes a first display screen and a second display screen, and the first display screen and the second display screen are both electrically connected to the license plate controller.

[0018] Furthermore, the vehicle-mounted controller also includes a satellite positioning module and / or a vehicle status detection device and / or a vehicle bus communication module and / or a vehicle status display device electrically connected to the vehicle-mounted main controller.

[0019] Furthermore, the electronic license plate also includes an anti-disassembly device and / or a vibration detection device electrically connected to the license plate controller.

[0020] Based on the above-mentioned separate electronic license plate system, the present invention also provides a separate electronic license plate system pairing method.

[0021] A method for pairing a separate electronic license plate system, the separate electronic license plate pairing method is used to pair the vehicle-mounted controller and the electronic license plate in the separate electronic license plate system, comprising the following steps:

[0022] After setting the first working state information of the vehicle-mounted controller, the vehicle-mounted controller sends a license plate pairing request message to the electronic license plate through the second communication module according to the first working state information;

[0023] After the electronic license plate receives the license plate pairing request information through the third communication module, second working status information corresponding to the first working status information is input into the electronic license plate according to the first working status information, and the electronic license plate sends the second working status information to the vehicle-mounted controller through the third communication module;

[0024] After the vehicle-mounted controller receives the second working status information through the second communication module, the second working status information is compared with the current working status information of the vehicle-mounted controller, and based on the comparison result, it is determined whether the electronic license plate is the target electronic license plate that is correctly paired with the vehicle-mounted controller.

[0025] The beneficial effect of the present invention is that the separate electronic license plate system pairing method of the present invention can ensure the correct pairing of the separate vehicle-mounted controller and the electronic license plate, thereby ensuring the normal operation of the electronic license plate.

[0026] Based on the above technical solution, the present invention can also be improved as follows.

[0027] Furthermore, before the step of pairing the vehicle-mounted controller with the electronic license plate, the following steps are also included:

[0028] The vehicle controller sends a license plate registration request message to the license plate management server through the first communication module;

[0029] The license plate management server sends a license plate registration challenge code to the vehicle controller according to the license plate registration request information;

[0030] The on-board controller receives the license plate registration challenge code through the first communication module;

[0031] After the step of pairing the vehicle-mounted controller with the electronic license plate, and when the electronic license plate is the target electronic license plate that is correctly paired with the vehicle-mounted controller, the following steps are also included:

[0032] The on-board controller forwards the license plate registration challenge code to the electronic license plate through the second communication module;

[0033] The electronic license plate receives the license plate registration challenge code through the third communication module, and displays the license plate registration challenge code on the display screen;

[0034] The client terminal obtains the license plate registration challenge code displayed on the display screen of the electronic license plate, and sends the obtained license plate registration challenge code to the license plate management server;

[0035] The license plate management server binds the license plate registration challenge code to the vehicle-mounted controller, the client terminal and the electronic license plate to complete the license plate registration.

[0036] Furthermore, the specific form in which the license plate registration challenge code is displayed on the display screen of the electronic license plate is a QR code or a barcode; the client obtains the license plate registration challenge code displayed on the display screen of the electronic license plate by scanning the QR code or the barcode. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 This is an overall structural block diagram of a separate electronic license plate system of the present invention;

[0038] Figure 2 It is a structural schematic diagram of a vehicle-mounted controller in a separated electronic license plate system of the present invention;

[0039] Figure 3 A schematic diagram of the structure of an electronic license plate in a separate electronic license plate system of the present invention;

[0040] Figure 4 A flow chart of a method for pairing a separate electronic license plate system according to the present invention;

[0041] Figure 5 A schematic diagram of a combination of an electronic license plate, an on-board controller, and a license plate management server;

[0042] Figure 6 This is a timing diagram of a pairing method for a separate electronic license plate system according to the present invention. DETAILED DESCRIPTION

[0043] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0044] like Figure 1 , Figure 2 and Figure 3 As shown, a separate electronic license plate system includes a separate vehicle-mounted controller and an electronic license plate;

[0045] The vehicle-mounted controller includes a vehicle-mounted main controller and a main control power supply circuit electrically connected to the vehicle-mounted main controller, a first communication module and a second communication module; the main control power supply circuit is equipped with a 12V power input interface, and the 12V power input interface is used to power the vehicle-mounted controller by connecting to a car power supply;

[0046] The electronic license plate includes a license plate controller, and a license plate display screen electrically connected to the license plate controller, a third communication module and a license plate power supply circuit; the license plate power supply circuit is provided with a license plate power supply interface and / or a license plate power supply battery, the license plate power supply interface is used to supply power to the electronic license plate by connecting to a headlight power supply line, or / and is used to charge the license plate power supply battery by connecting to a headlight power supply line or an external power source, and the license plate power supply battery is used to supply power to the electronic license plate through the license plate power supply circuit;

[0047] The second communication module matches the third communication module, and a communication channel is established between the second communication module and the third communication module.

[0048] In addition, the first communication module is used to connect the on-board controller to the external network through wireless communication. The license plate controller controls the license plate display screen to display any one or more of the license plate information, vehicle management information, and vehicle status information. In addition to displaying basic license plate information, it can also provide vehicle management information and vehicle status information, so that the function of the license plate display screen can be expanded. The license plate controller controls the third communication module to communicate with the second communication module of the on-board controller. The electronic license plate is controlled by the on-board controller, and the on-board controller controls the electronic license plate to display any one or more of the license plate information, vehicle management information, and vehicle status information.

[0049] The number of electronic license plates and their installation locations can be flexibly set according to actual needs, such as on both sides of the car and other necessary locations. In a common scenario, there can be two electronic license plates, one hanging on the front of the car and one hanging on the rear of the car. In other words, in a car, there is an on-board controller and two electronic license plates, and the second communication module in the on-board controller can communicate with the third communication modules in the two electronic license plates.

[0050] The on-board controller is connected to the third communication module of the electronic license plate through the second communication module, which greatly reduces the power consumption of the electronic license plate communication.

[0051] The on-board controller can be installed inside the car and is not easily disassembled illegally, which improves the safety performance of the separate electronic license plate system.

[0052] In this specific embodiment, there is also the following preferred solution:

[0053] Preferably, the license plate power supply interface includes a vehicle power supply interface and / or a USB power supply interface; the USB power supply interface is also used to power the electronic license plate by connecting an external power supply, and / or to charge the license plate power supply battery by connecting an external power supply.

[0054] The license plate power supply circuit can be configured with both a USB power supply interface and a vehicle power supply interface, or only a USB power supply interface, or only a vehicle power supply interface. When both interfaces are included, the license plate power supply circuit can select the interface with power to charge the battery first according to the power supply status of the two interfaces.

[0055] In addition to charging the battery, the power source connected through the USB power supply interface and / or the vehicle power supply interface can directly supply power to the electronic license plate. That is, in some cases, the electronic license plate may only include a license plate power supply circuit and a corresponding USB power supply interface or vehicle power supply interface, and may not necessarily be equipped with a license plate power supply battery.

[0056] The on-vehicle charging interface allows the electronic license plate to be charged using the license plate light power supply or the vehicle light power supply, which can greatly reduce the changes to the vehicle caused by installing the electronic license plate, especially the changes to the power supply system.

[0057] Preferably, the communication channel between the second communication module and the third communication module is specifically a wireless communication channel, and the communication protocol adopted by the wireless communication channel is any one of the Bluetooth protocol, the 2.4G communication protocol and the Zigebee communication protocol. The Bluetooth protocol, the 2.4G communication protocol and the Zigebee communication protocol are all low-power communication protocols, and the wireless communication channel can also adopt other low-power communication protocols.

[0058] Preferably, the license plate display screen includes a first display screen and a second display screen, and the first display screen and the second display screen are both electrically connected to the license plate controller. The first display screen displays part of the information, and the second display screen displays another part of the information; the first display screen and the second display screen cooperate to display the information. The information displayed by the first display screen and the second display screen includes: any one or more of the three types of information: license plate information, vehicle management information, and vehicle status information. The first display screen and the second display screen can also be used to display any one of the above information separately.

[0059] Preferably, the vehicle-mounted controller further comprises a satellite positioning module and / or a vehicle status detection device and / or a vehicle bus communication module and / or a vehicle status display device electrically connected to the vehicle-mounted main controller.

[0060] in:

[0061] The satellite positioning module communicates with external satellites wirelessly to obtain location information. With the satellite positioning module, the vehicle controller can obtain the vehicle location information, making it convenient for the owner to obtain the vehicle location information and manage the vehicle through the network.

[0062] The vehicle status detection device can specifically use an acceleration sensor to obtain the current vehicle status information of the car through the acceleration sensor (the acceleration sensor can detect the running status and running speed of the car); the on-board main controller can control the working rhythm of the satellite positioning unit according to the current vehicle status information of the car. The vehicle status information includes vehicle stop status information, vehicle running status information and vehicle running speed information. When the vehicle status information is stop status information, the on-board main controller controls the working frequency of the satellite positioning module to adapt to the stop state; when the vehicle status information is running status information, the on-board main controller controls the working frequency of the satellite positioning module to adapt to the vehicle running state and vehicle running speed. Controlling the working rhythm of the satellite positioning module according to the current vehicle status information can greatly reduce power consumption.

[0063] The vehicle-mounted main controller can obtain the vehicle's internal status information through the vehicle bus communication module. With the vehicle bus communication module, the vehicle's internal status information can be obtained and the vehicle owner or management unit can be notified of the vehicle status in a timely manner. The vehicle's internal status information includes but is not limited to engine information, door and window status information, current fuel consumption information, mileage information, and vehicle electronic equipment status information.

[0064] The vehicle status display device is specifically a display screen or a display light, which is used to display the working status information of the vehicle controller. With the status display device, the working status information of the vehicle controller can be displayed, which is convenient for the car owner to know the working status information of the vehicle controller in the car. The working status information of the vehicle controller includes the communication status information between the vehicle controller and the electronic license plate; when the vehicle controller communicates and pairs with multiple electronic license plates, the status display device can help the car owner obtain relevant information and complete the authentication and pairing process.

[0065] Preferably, the electronic license plate further includes an anti-disassembly device and / or a vibration detection device electrically connected to the license plate controller.

[0066] in:

[0067] A connection status monitoring sensor is provided on the anti-dismantling device; when the connection status monitoring sensor senses that the connection status between the electronic license plate and the car has changed, the connection status monitoring sensor outputs a corresponding connection status signal to the license plate controller; the license plate controller can activate an anti-dismantling alarm or a corresponding license plate display protection behavior.

[0068] The vibration detection device is provided with a vibration detection sensor for detecting the state information of the car (vibration will be generated when the vehicle is moving, and no vibration will occur when the vehicle is stopped); the license plate controller controls the display information of the license plate display screen according to the acquired state information of the car. The display information of the license plate display screen is controlled by detecting whether the vehicle is moving; the displayed information includes license plate information, advertising information or notice information, and the notice information includes, for example, vehicle violation information. When the vibration is detected by the vibration detection sensor, it is known that the electronic license plate is in the state of the car running, and the license plate information is mainly displayed, and the advertising information or notice information is used as the secondary display information; if it is known that the electronic license plate is in the state of the car stopping, the advertising information or notice information is mainly displayed.

[0069] A separate electronic license plate system of the present invention adopts a method of separating the on-board controller and the electronic license plate. The on-board controller can be powered by the internal power supply of the car to complete the wireless communication and control functions that consume a long time of power; and the electronic license plate can be installed at a specific position on the front or rear of the car, and the electronic license plate is powered by its own internal battery or by the car light power supply or license plate light power supply; such a separate electronic license plate greatly reduces the difficulty of installing the electronic license plate, and even if the electronic license plate is powered by its own battery, it can support one to two years of normal use.

[0070] Based on the above-mentioned separate electronic license plate system, the present invention also provides a separate electronic license plate system pairing method.

[0071] like Figure 4 As shown, a method for pairing a separate electronic license plate system is used to pair the vehicle controller and the electronic license plate in the separate electronic license plate system described above, and includes the following steps:

[0072] After setting the first working state information of the vehicle-mounted controller, the vehicle-mounted controller sends a license plate pairing request message to the electronic license plate through the second communication module according to the first working state information;

[0073] After the electronic license plate receives the license plate pairing request information through the third communication module, second working status information corresponding to the first working status information is input into the electronic license plate according to the first working status information, and the electronic license plate sends the second working status information to the vehicle-mounted controller through the third communication module;

[0074] After the vehicle-mounted controller receives the second working status information through the second communication module, the second working status information is compared with the current working status information of the vehicle-mounted controller, and based on the comparison result, it is determined whether the electronic license plate is the target electronic license plate that is correctly paired with the vehicle-mounted controller.

[0075] in:

[0076] Before the step of pairing the vehicle-mounted controller with the electronic license plate, the following steps are also included:

[0077] The vehicle controller sends a license plate registration request message to the license plate management server through the first communication module;

[0078] The license plate management server sends a license plate registration challenge code to the vehicle controller according to the license plate registration request information;

[0079] The on-board controller receives the license plate registration challenge code through the first communication module;

[0080] After the step of pairing the vehicle-mounted controller with the electronic license plate, and when the electronic license plate is the target electronic license plate that is correctly paired with the vehicle-mounted controller, the following steps are also included:

[0081] The on-board controller forwards the license plate registration challenge code to the electronic license plate through the second communication module;

[0082] The electronic license plate receives the license plate registration challenge code through the third communication module, and displays the license plate registration challenge code on the display screen;

[0083] The client terminal obtains the license plate registration challenge code displayed on the display screen of the electronic license plate, and sends the obtained license plate registration challenge code to the license plate management server;

[0084] The license plate management server binds the license plate registration challenge code to the vehicle-mounted controller, the client terminal and the electronic license plate to complete the license plate registration.

[0085] Specifically, the specific form of the license plate registration challenge code displayed on the display screen of the electronic license plate is a two-dimensional code or a bar code (the license plate registration challenge code is a two-dimensional code image; or the license plate controller converts the license plate registration challenge code into a bar code or a two-dimensional code and displays it on the license plate display screen); the client obtains the license plate registration challenge code displayed on the display screen of the electronic license plate by scanning the two-dimensional code or the bar code. The second working status information corresponding to the first working status information input into the electronic license plate is specifically the connection status information of the charging interface.

[0086] In a separate electronic license plate system pairing method of the present invention, the client terminal is a mobile phone or a tablet or any other terminal with wireless communication function. A stable pairing relationship needs to be established between the vehicle controller and the electronic license plate it manages, so as to facilitate the accurate transmission and display of display information; a binding relationship also needs to be established between the client terminal and the vehicle controller to determine the manager who manages the electronic license plate; when a binding relationship is established between the client terminal and the vehicle controller, and a relationship is established between the vehicle controller and the electronic license plate it manages, the license plate registration is completed.

[0087] There are no other human-machine interfaces on the electronic license plate, which can reduce the structural difficulty and reduce the impact of external operations on the internal work of the electronic license plate. However, certain information needs to be input during the pairing process, and the design is simplified by inputting the connection status information of the charging interface.

[0088] In addition, the vehicle controller can also obtain traffic information from the license plate management server; the traffic information includes vehicle violation information and road condition information.

[0089] In the separate electronic license plate system pairing method, the structure of the electronic license plate, the vehicle controller and the license plate management server combination is as follows Figure 5 shown.

[0090] Figure 6 The timing diagram of the pairing method of the separated electronic license plate system shown includes the steps of pairing the on-board controller and the electronic license plate. The steps of pairing the on-board controller and the electronic license plate include: the on-board controller and the electronic license plate establish communication; the license plate management server sends the license plate registration challenge code to the on-board controller; the on-board controller sends the license plate registration challenge code to the electronic license plate; the electronic license plate displays the license plate registration challenge code; the license plate registration challenge code displayed by the electronic license plate is scanned and obtained by an external client terminal; the client terminal sends the license plate registration challenge code to the license plate management server; the license plate management server compares the license plate registration challenge code sent by the client terminal with the license plate registration challenge code sent to the on-board controller, and obtains the on-board controller number information to be matched based on the comparison result; the license plate management server sends the license plate registration challenge code to the on-board controller to be matched. The on-board controller sends a command, and the on-board controller lights up the built-in indicator light (on-board status display device) of the on-board controller according to the command, and makes the built-in indicator light of the on-board controller display the lighting characteristic information; the client sends the lighting characteristic information of the built-in indicator light of the on-board controller to the license plate management server; the license plate management server identifies whether the lighting characteristic information of the built-in indicator light of the on-board controller matches the command issued by the license plate management server; if the match is successful, the current on-board controller and the electronic license plate are set to the specified matching combination; if the match fails, switch to another on-board controller or another electronic license plate; and restart the steps of pairing the on-board controller and the electronic license plate.

[0091] The present invention provides a pairing method for a separated electronic license plate system, which can ensure the correct pairing of a separated vehicle-mounted controller and an electronic license plate, thereby ensuring the normal operation of the electronic license plate.

[0092] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for pairing a separate electronic license plate system, characterized in that: Used to pair the on-board controller and the electronic license plate in a separate electronic license plate system; wherein the separate electronic license plate system includes a separate on-board controller and an electronic license plate; the on-board controller includes an on-board main controller and a main control power supply circuit electrically connected to the on-board main controller, a first communication module and a second communication module; the electronic license plate includes a license plate controller, and a license plate display screen electrically connected to the license plate controller, a third communication module and a license plate power supply circuit; the second communication module matches the third communication module, and a communication channel is established between the second communication module and the third communication module; the license plate power supply circuit is equipped with a license plate power supply interface and / or a license plate power supply battery; the license plate power supply interface is used to power the electronic license plate by connecting the headlight power supply line, or / and is used to charge the license plate power supply battery by connecting the headlight power supply line or an external power supply; the license plate power supply battery is used to power the electronic license plate through the license plate power supply circuit; The separate electronic license plate pairing method comprises the following steps: After setting the first working state information of the vehicle-mounted controller, the vehicle-mounted controller sends a license plate pairing request message to the electronic license plate through the second communication module according to the first working state information; After the electronic license plate receives the license plate pairing request information through the third communication module, second working status information corresponding to the first working status information is input into the electronic license plate according to the first working status information, and the electronic license plate sends the second working status information to the vehicle-mounted controller through the third communication module; After the on-board controller receives the second working state information through the second communication module, the second working state information is compared with the current working state information of the on-board controller, and according to the comparison result, it is determined whether the electronic license plate is a target electronic license plate correctly paired with the on-board controller; Before the step of pairing the vehicle-mounted controller with the electronic license plate, the following steps are also included: The vehicle controller sends a license plate registration request message to the license plate management server through the first communication module; The license plate management server sends a license plate registration challenge code to the vehicle controller according to the license plate registration request information; The on-board controller receives the license plate registration challenge code through the first communication module; After the step of pairing the vehicle-mounted controller with the electronic license plate, and when the electronic license plate is the target electronic license plate that is correctly paired with the vehicle-mounted controller, the following steps are also included: The on-board controller forwards the license plate registration challenge code to the electronic license plate through the second communication module; The electronic license plate receives the license plate registration challenge code through the third communication module, and displays the license plate registration challenge code on the display screen; The client terminal obtains the license plate registration challenge code displayed on the display screen of the electronic license plate, and sends the obtained license plate registration challenge code to the license plate management server; The license plate management server binds the license plate registration challenge code with the vehicle controller, the client terminal and the electronic license plate to complete the license plate registration; The specific form in which the license plate registration challenge code is displayed on the display screen of the electronic license plate is a QR code or a bar code; the way in which the client terminal obtains the license plate registration challenge code displayed on the display screen of the electronic license plate is to scan the QR code or the bar code.

2. The method for pairing a separate electronic license plate system according to claim 1, characterized in that: The main control power supply circuit is equipped with a 12V power input interface, and the 12V power input interface is used to supply power to the vehicle controller by connecting to a car power supply.

3. The method for pairing a separate electronic license plate system according to claim 1, characterized in that: The license plate power supply interface includes a vehicle power supply interface and / or a USB power supply interface; The USB power supply interface is also used to power the electronic license plate by connecting to an external power source, or / and is used to charge the license plate power supply battery by connecting to an external power source.

4. The method for pairing a separate electronic license plate system according to claim 1, characterized in that: The communication channel between the second communication module and the third communication module is specifically a wireless communication channel, and the communication protocol adopted by the wireless communication channel is any one of the Bluetooth protocol, the 2.4G communication protocol and the Zigebee communication protocol.

5. The method for pairing a separate electronic license plate system according to claim 1, characterized in that: The license plate display screen includes a first display screen and a second display screen, and the first display screen and the second display screen are both electrically connected to the license plate controller.

6. The method for pairing a separate electronic license plate system according to any one of claims 1 to 5, characterized in that: The vehicle-mounted controller also includes a satellite positioning module and / or a vehicle status detection device and / or a vehicle bus communication module and / or a vehicle status display device electrically connected to the vehicle-mounted main controller.

7. The method for pairing a separate electronic license plate system according to any one of claims 1 to 5, characterized in that: The electronic license plate further comprises an anti-disassembly device and / or a vibration detection device electrically connected to the license plate controller.

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