V2I-based priority passage method and system

Abstract

The present invention belongs to the field of vehicle traffic control technology, and particularly relates to a vehicle-to-infrastructure (V2I)-based priority passage method and system. First, a vehicle owner registers and applies for a target vehicle license plate with an authority. A cloud server uses the specific number and digital signature to generate a digital watermark and embed it into the vehicle license plate image. When the target vehicle enters the roadside terminal's capture area, the roadside terminal captures the vehicle license plate image and uploads the vehicle license plate image and roadside terminal data to the cloud server. The cloud server identifies and extracts the target vehicle license plate from the license plate image, matches the extracted target vehicle license plate and roadside terminal data with pre-stored data to verify whether the target vehicle has access to the corresponding one-way street. The verification result is then fed back to the target vehicle and the roadside terminal, allowing the target vehicle to have priority in the opposite direction on the one-way street. The present invention applies digital watermarking technology to vehicle license plates and combines it with vehicle-to-infrastructure (V2I) vehicle networking technology to achieve priority reverse passage for the target vehicle on one-way streets.

Description

Technical Field

[0001] The present invention belongs to the technical field of vehicle traffic control, and in particular relates to a V2I-based priority traffic method and system. Background Art

[0002] A one-way street is a lane that allows traffic in only one direction. As a traffic management measure requiring minimal investment, rapid effectiveness, and ease of operation, one-way traffic has been widely adopted in developed Western countries. In recent years, many Chinese cities have also actively adopted one-way traffic, converting some two-way streets into one-way lanes. This has significantly alleviated traffic pressure and reduced congestion. One-way streets are the most direct, effective, and economical way to address urban traffic congestion and increase traffic capacity, ensuring overall smooth traffic flow through local restrictions.

[0003] Everything has its pros and cons. For example, if the destination is in the opposite direction of the permitted travel on a one-way street, the vehicle may need to take a longer detour, which can be inconvenient. While the added time and energy costs are acceptable for ordinary vehicles, they can have a significant impact on the operations of special vehicles (such as ambulances, fire trucks, police cars, and emergency vehicles) whose missions are time-sensitive. While relevant regulations allow these special vehicles to safely drive against traffic on one-way streets without restrictions on speed, route, direction, or traffic lights, the current lack of effective communication and coordination between vehicles, roads, other vehicles, and pedestrians means these vehicles can easily cause traffic jams and / or accidents. Given the rapid development of connected vehicle technology, how to combine digital watermarking technology to enable these special vehicles to safely and quickly drive against traffic on one-way streets is an urgent issue. Summary of the Invention

[0004] To this end, the present invention provides a V2I-based priority passage method and system, which applies digital watermark technology to vehicle license plates and combines it with V2I vehicle networking technology to enable target vehicles for specific tasks to use one-way streets for priority passage in the opposite direction, ensuring safe and reliable passage while being simple and efficient to implement.

[0005] According to the design scheme provided by the present invention, a V2I-based priority passage method is provided. Through information exchange between the Internet of Vehicles cloud server, the vehicle terminal, and the roadside terminal, priority passage in the opposite direction of a one-way road is achieved for vehicles with specific tasks. The implementation process includes the following contents:

[0006] The vehicle owner registers the target license plate with the authority. The cloud server generates a license plate image based on the registration application data, digitally signs the specific number on the license plate, and uses the specific number and digital signature to generate a digital watermark that is embedded in the license plate image. The cloud server also stores the target license plate, the license plates that enjoy priority on the corresponding one-way street, the correspondence between the roadside end and the one-way street, and the location of the roadside end corresponding to the one-way street end in advance. The roadside end is set to capture the license plate image within a certain range.

[0007] When the target vehicle enters the roadside shooting area, the roadside device is triggered to capture the vehicle license plate image and upload the vehicle license plate image and roadside data to the cloud server;

[0008] The cloud server identifies and extracts the target vehicle license plate from the vehicle license plate image, matches the extracted target vehicle license plate and roadside data with pre-stored data to verify whether the target vehicle has the right of passage on the corresponding one-way street; and feeds back the verification results to the target vehicle and the roadside; generates priority passage indication information through the roadside, so that the target vehicle has priority in the opposite direction on the one-way street, while prompting other vehicles and pedestrians to avoid it.

[0009] As a V2I-based priority passage method in the present invention, further, the cloud server identifies and extracts the target vehicle license plate in the vehicle license plate image, and matches the extracted target vehicle license plate and the roadside end data with the pre-stored data to verify whether the target vehicle enjoys the right of passage on the corresponding one-way street, including: first, extracting the vehicle license plate information by identifying the vehicle license plate image, and searching for the one-way street position corresponding to the roadside end according to the roadside end data; then, comparing the extracted vehicle license plate information with the pre-stored vehicle license plate information, if the relevant vehicle license plate is matched, then searching for whether the target vehicle enjoys the priority right of passage on the corresponding one-way street on the roadside end; if so, continuing to identify the digital watermark in the vehicle license plate image, extracting the information in the digital watermark and verifying the digital signature; if the verification is successful, it is determined that the target vehicle enjoys the priority right of passage on the corresponding one-way street; otherwise, the target vehicle does not enjoy the priority right of passage on the corresponding one-way street.

[0010] As a V2I-based priority passage method in the present invention, further, for a target vehicle that enjoys priority passage authority, the cloud server obtains the target vehicle's geographic location in real time, and compares the distance between the target vehicle's geographic location and the corresponding one-way street end position with a preset threshold. If the distance reaches or is less than the preset threshold, the target vehicle is allowed to pass in the opposite direction on the corresponding one-way street, and the passage authority verification result is fed back to the target vehicle and the roadside end; if the distance is higher than the threshold, the target vehicle's geographic location is continuously collected, and the distance between the target vehicle's geographic location and the geographic location of the end point of the one-way street to be traveled is updated, and the distance and the preset threshold are continuously judged until the distance reaches or is less than the preset threshold, and the target vehicle is allowed to pass in the opposite direction on the corresponding one-way street, and the passage authority verification result is fed back to the target vehicle and the roadside end.

[0011] As the V2I-based priority passage method in the present invention, further, a secure smart chip is used to perform information security interaction between the roadside end, the vehicle end and the Internet of Vehicles cloud server, wherein the secure smart chip uses a cryptographic algorithm to perform data encryption processing.

[0012] As the V2I-based priority passage method of the present invention, further, the cryptographic algorithm includes but is not limited to: one or more combinations of SM1, SM2, SM3, SM4, SM9, 3DES, AES, RSA, SHA-1 and SHA-256.

[0013] As a V2I-based priority passage method of the present invention, further, when the vehicle side contains multiple target vehicles, the multiple target vehicles are queued according to the distance between the geographical location of each target vehicle and the end point of the one-way street and the time sequence of the target vehicles at the current geographical location. The cloud server verifies the passage rights of the target vehicles according to the queueing order. Among them, in the queueing process, the target vehicles with closer distances are set to the front of the queue according to the distance between the geographical location of the target vehicle and the end point of the one-way street. If the distances are the same, the target vehicles with earlier request times are set to the front of the queue according to the time sequence of the current geographical locations.

[0014] Furthermore, based on the above method, the present invention also provides a V2I-based priority passage system, comprising:

[0015] The roadside terminal corresponding to a one-way street and installed in a preset area of ​​the corresponding one-way street collects images of vehicle license plates within the preset area and feeds them back to the cloud server in the V2I system. Based on the priority access rights for the corresponding one-way street sent by the cloud server, it generates priority access information to prompt the corresponding target vehicle to have priority access in the opposite direction on the one-way street and prompt other vehicles and pedestrians to give way.

[0016] Furthermore, the vehicle-side terminal installed on the vehicle registers the target vehicle license plate with the authority through the vehicle owner, and enjoys the priority passage rights on the corresponding one-way street sent by the cloud server based on the vehicle license plate;

[0017] The cloud server pre-stores the target vehicle license plate, the vehicle license plate that enjoys priority on the corresponding one-way street, the correspondence between the roadside end and the one-way street, and the end position of the one-way street corresponding to the roadside end, and generates a vehicle license plate image based on the registration application data, digitally signs the specific number of the vehicle license plate, uses the specific number and digital signature to generate a digital watermark and embeds it into the vehicle license plate image, and verifies the target vehicle that enjoys priority on the corresponding one-way street by obtaining the vehicle license plate image sent by the roadside end, and sends the target vehicle related information to the roadside end and the target vehicle corresponding to the one-way street.

[0018] As the V2I-based priority passage system of the present invention, further, the cloud server also includes: a digital certificate module, a cloud security module, a cloud digital watermark module and a cloud storage module, wherein,

[0019] The digital certificate module is used to generate and save public key certificates for the cloud server and issue public key certificates for the roadside and vehicle sides;

[0020] The cloud security module uses a secure smart chip to provide encryption and decryption and secure storage of information interaction data for the cloud server;

[0021] The cloud-based digital watermark module is used to digitally sign the specific number in the vehicle license plate image, and use the specific number and digital signature to generate a digital watermark and embed it into the vehicle license plate image;

[0022] The cloud storage module is used to pre-set and store the target vehicle license plate, the vehicle license plate that enjoys priority passage on the corresponding one-way street, the correspondence between the roadside end and the one-way street, and the end point position of the one-way street corresponding to the roadside end, so that the cloud server can verify the priority passage right of the target vehicle by calling and querying relevant information.

[0023] As the V2I-based priority passage system of the present invention, the roadside end further includes: a roadside end safety module, a roadside end camera module, a traffic signal mechanism, a priority information display board and a marking projection module, wherein,

[0024] The roadside security module is used to provide encryption and decryption and secure storage of information interaction data for the roadside terminal using a secure smart chip;

[0025] Roadside camera module, used to capture images of vehicle license plates within a preset area;

[0026] Traffic signal mechanism, used to control traffic lights by changing the sequence of road traffic signals and adjusting the timing;

[0027] Priority information display board, used to display relevant data of the target vehicle currently and / or about to pass in the opposite direction for other vehicles and pedestrians to understand, such relevant data including the target vehicle's direction of travel, speed and distance from the one-way sign;

[0028] The marking projection module is used to project reverse priority traffic data onto the one-way road surface where the target vehicle is to travel. The reverse priority traffic data includes the reverse direction indicating markings and relevant data of the target vehicle.

[0029] As the V2I-based priority passage system of the present invention, further, the vehicle side also includes a vehicle side safety module and a vehicle side positioning module, wherein,

[0030] The vehicle-side security module is used to provide encryption and decryption and secure storage of information interaction data for the vehicle side using a secure smart chip;

[0031] The vehicle-side positioning module is used to obtain the vehicle's geographic location data.

[0032] Beneficial effects of the present invention:

[0033] First, in the present invention, the cloud server, roadside end and vehicle end ensure the identity of the information sender and the authenticity and integrity of the information sent by verifying the digital signature, preventing the information from being illegally tampered with. It can also prevent the information from being replayed and attacked by applying timestamps and random numbers in the sent information, thereby ensuring the security of the information.

[0034] Second, by applying V2I vehicle-to-vehicle (V2I) networking and network technologies, while ensuring secure information transmission, it is possible to use traffic signal controllers, priority information display boards, marking projection modules, intelligent road studs, voice prompt modules and other modules on one-way streets to enable vehicles and pedestrians to understand the current and / or upcoming vehicle situations, and to adjust their own positions, directions and / or avoidance in a timely manner, so that the vehicles can safely and smoothly achieve priority passage.

[0035] Third, the cloud server can better and more intelligently determine which vehicle or vehicles to prioritize based on the positioning information and time information reported by the vehicle, further improving the efficiency of priority passage.

[0036] Fourth, the present invention embeds digital watermark information within the license plate image to generate a secure license plate. By extracting and verifying the digital watermark, it is possible to determine the integrity and tamper-evident nature of the license plate image, as well as confirm whether it was issued by the cloud server. This ensures that the license plates of vehicles requiring reverse priority passage have been specifically reviewed, issued, and produced, and are designated for specialized vehicles performing specific tasks. This effectively ensures safe passage order and makes priority passage for vehicles with specific tasks more secure and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 Schematic diagram of the V2I-based priority passage process in an embodiment;

[0038] Figure 2 Schematic diagram of the V2I-based priority passage system architecture in an embodiment. DETAILED DESCRIPTION

[0039] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention is further described in detail below with reference to the accompanying drawings and technical solutions.

[0040] For the embodiment of this case, see Figure 1 As shown in the figure, a V2I-based priority passage method is provided. Through information exchange between the Internet of Vehicles cloud server, the vehicle side, and the roadside side, priority passage in the opposite direction of a one-way road is achieved for vehicles with specific tasks. The implementation process includes the following:

[0041] S101. A vehicle owner registers a target vehicle license plate with an authority. A cloud server generates a license plate image based on the registration application data, digitally signs the specific number on the license plate, and uses the specific number and digital signature to generate a digital watermark that is embedded in the license plate image. The cloud server also stores the target license plate, the license plates of vehicles with priority on the corresponding one-way street, the correspondence between the roadside end and the one-way street, and the end point of the roadside end corresponding to the one-way street in advance. A capture area for the license plate image is set on the roadside end.

[0042] S102: When the target vehicle enters the roadside end shooting area, the roadside end is triggered to capture the vehicle license plate image and upload the vehicle license plate image and roadside end data to the cloud server;

[0043] S103. The cloud server identifies and extracts the target vehicle license plate from the vehicle license plate image, matches the extracted target vehicle license plate and the roadside data with the pre-stored data to verify whether the target vehicle has the right of passage on the corresponding one-way street; and feeds back the verification result to the target vehicle and the roadside; generates priority passage indication information through the roadside, so that the target vehicle has priority in the opposite direction on the one-way street, while prompting other vehicles and pedestrians to avoid it.

[0044] In V2I (Vehicle to Infrastructure), V stands for vehicle and I stands for infrastructure. Existing V2I vehicle-to-infrastructure (V2I) technology enables information exchange between vehicles and infrastructure. In this embodiment, by applying V2I vehicle-to-infrastructure and network technologies, while ensuring secure information transmission, it enables vehicles and pedestrians to understand the current and / or impending vehicle status, allowing them to promptly adjust their position, direction, and / or avoidance procedures. This allows target vehicles performing special tasks on the vehicle to safely and smoothly achieve priority passage in the opposite direction on a one-way street.

[0045] As a preferred embodiment, further, the cloud server identifies and extracts the target vehicle license plate in the vehicle license plate image, and matches the extracted target vehicle license plate and the roadside end data with the pre-stored data to verify whether the target vehicle has the right of passage on the corresponding one-way street, including: first, extracting the vehicle license plate information by identifying the vehicle license plate image, and searching for the one-way street position corresponding to the roadside end according to the roadside end data; then, comparing the extracted vehicle license plate information with the pre-stored vehicle license plate. If the relevant vehicle license plate is matched, then searching for whether the target vehicle has the priority right of passage on the corresponding one-way street on the roadside end. If so, then continue to identify the digital watermark in the vehicle license plate image, extract the information in the digital watermark and verify the digital signature. If the verification is successful, it is determined that the target vehicle has the priority right of passage on the corresponding one-way street. Otherwise, the target vehicle does not have the priority right of passage on the corresponding one-way street.

[0046] Once the vehicle-side device is wirelessly connected to the cloud server, it can immediately transmit vehicle-related information to the cloud server, as well as the vehicle's geographic location information in real time and continuously. The cloud server can then track the vehicle's travel trajectory based on the vehicle's geographic location information. When the vehicle-side device enters the area preset by the roadside device, the roadside device captures an image of the vehicle's license plate and transmits the image and the roadside device number to the cloud server. The cloud server recognizes the license plate image and extracts the license plate information. The cloud server then uses the roadside device number to locate the geographic location information of the one-way street corresponding to the roadside device.

[0047] The cloud server compares the vehicle license plate information with the vehicle license plates pre-installed and stored in the cloud storage module. If the relevant vehicle license plate is not found in the cloud storage module, the cloud server directly returns a permission to the vehicle and the roadside that does not allow reverse traffic. If the relevant vehicle license plate is found, the cloud server then searches for the vehicle's permission to pass on the one-way street corresponding to the vehicle license plate. If the vehicle's permission to pass does not allow reverse traffic, the cloud server sends the permission to pass to the vehicle and the roadside. If the vehicle's permission to pass does allow reverse traffic, the cloud server continues to attempt to identify the digital watermark contained in the image of the vehicle license plate.

[0048] If the digital watermark recognition fails, the vehicle license plate corresponding to the image of the vehicle license plate is determined to be an illegal vehicle license plate, and the cloud server returns a passage permission that does not allow reverse traffic to the vehicle end and the roadside end; specifically, if the digital watermark information recognition fails, it means that the image of the vehicle license plate does not contain digital watermark information or the digital watermark information is damaged and cannot be recognized.

[0049] If the digital watermark recognition is successful, the cloud server extracts the digital watermark information contained in the image of the vehicle license plate and obtains the specific number information of the vehicle license plate and the digital signature of the vehicle license plate; the cloud server verifies the digital signature of the vehicle license plate based on the specific number information of the vehicle license plate. If the verification fails, the vehicle license plate corresponding to the vehicle license plate image is determined to be an illegal vehicle license plate, and the cloud server returns a pass that does not allow reverse traffic to the vehicle end and the roadside end. If the verification is successful, the image of the vehicle license plate is determined to be complete and untampered with, and is a legal and secure vehicle license plate issued by the cloud server; then, the cloud server calculates the distance between the geographic location of the vehicle end and the geographic location of the end point of the one-way street.

[0050] When the distance reaches or falls below a threshold, the cloud server will send the reverse passage permission to the vehicle end, and the vehicle end will pass through the one-way street in the reverse direction while ensuring safety; the cloud server will also send the vehicle end related information to the roadside end corresponding to the one-way street, and then the roadside end will control the traffic signal control machine, priority information display board and marking projection module according to the vehicle end related information to reflect the vehicle end related information, prompting social vehicles and pedestrians to take avoidance measures, and the avoidance measures include but are not limited to waiting in place, giving way and / or detouring; preferably, the roadside end also controls the intelligent road studs and / or voice prompt modules to reflect the vehicle end related information, and can prompt social vehicles and pedestrians to take avoidance measures, and the avoidance measures include but are not limited to waiting in place, giving way and / or detouring.

[0051] When the distance does not reach or is higher than the threshold, the cloud server sends a request to the vehicle end to continuously provide the vehicle end's geographic location information in real time; after receiving the request, the vehicle end continuously collects the vehicle end's geographic location in real time and sends it to the cloud server in real time; after receiving the geographic location information of the vehicle end, the cloud server also calculates the distance between the geographic location of the vehicle end and the geographic location of the end point of the one-way street in real time, and stops collecting and calculating until the distance reaches or is lower than the threshold; when the distance reaches or is lower than the threshold, the cloud server performs the aforementioned operation when the distance reaches the threshold, and sends the corresponding information as described above to the vehicle end and the roadside end respectively.

[0052] The threshold value may be stipulated or designated in advance by relevant departments and set in the vehicle terminal; the relevant departments include but are not limited to traffic management departments; as an example, the threshold value may be 200 meters, 100 meters, 50 meters or other distances.

[0053] After the vehicle end receives the passage authority that does not allow reverse passage, it cannot reverse through the one-way street, but chooses other roads to bypass it; after the roadside end receives the passage authority that does not allow reverse passage, it ignores the reverse passage demand of the vehicle end.

[0054] Before installing a secure license plate on a vehicle, the vehicle's information must be submitted to the vehicle management department for registration. This information includes, but is not limited to, the vehicle identification number. The vehicle management department will pre-plan and design the image format for standard license plates. The vehicle user must submit the vehicle information to be registered, select the specific license plate number, and register. This information includes the vehicle identification number. The vehicle management department is the designated authority, and the specific responsible department is subject to relevant regulations.

[0055] Based on the above information, the cloud server generates a standard license plate image. The cloud server then digitally signs the specific number information of the license plate to generate a license plate digital signature. Using the specific number information and the license plate digital signature as parameters, a license plate digital watermark is generated. The license plate digital watermark is then embedded into the standard license plate image to generate the secure license plate image. The vehicle management department generates a secure license plate from the secure license plate image in accordance with the printing and production specifications for license plates. The secure license plate is then installed on the vehicle.

[0056] Furthermore, when the vehicle sends the geographic location information of the vehicle to the cloud server, it can also be set to simultaneously send the time information of the vehicle when collecting the geographic location information of the vehicle; when there are multiple vehicles, when multiple vehicles need to have priority to pass in the opposite direction on the one-way street, the cloud server can queue the vehicles according to the distance between the geographic location of each vehicle and the geographic location of the end point of the one-way street and the order of time in the time information, and then the cloud server determines which vehicle to query first for the right to pass on the one-way street according to the order of queuing; the queuing of vehicles is to first queue according to the distance between the geographic location of each vehicle and the geographic location of the end point of the one-way street, with the vehicle with a closer distance being in front; if the distances are the same, then queue according to the time in the time information, with the vehicle with an earlier time being in front.

[0057] In the embodiment of this case, further, when the vehicle-side sends the vehicle-side related information to the cloud server, it also sends the digital signature information of the vehicle-side related information using the vehicle-side private key; after the cloud server receives the vehicle-side related information and the digital signature information of the vehicle-side related information, it uses the public key in the vehicle-side public key certificate to verify the digital signature information of the vehicle-side related information; if the verification fails, it directly returns the access permission that does not allow reverse passage to the vehicle-side.

[0058] In the embodiment of this case, further, when the roadside end sends the image of the vehicle license plate and the roadside end number to the cloud server, it also sends the digital signature information of the image of the vehicle license plate and the roadside end number using the private key of the roadside end; after the cloud server receives the image of the vehicle license plate and the roadside end number and the digital signature information of the image of the vehicle license plate and the roadside end number, it uses the public key in the public key certificate of the roadside end to verify the digital signature information of the image of the vehicle license plate and the roadside end number; if the verification fails, the access permission that does not allow reverse passage is directly returned to the roadside end and the vehicle end.

[0059] Furthermore, before the cloud server returns the access authority to the vehicle end and / or the road side end, the cloud server digitally signs the access authority with its own private key to generate a digital signature of the access authority, and then returns the access authority and the digital signature of the access authority to the vehicle end and / or the road side end. After receiving the access authority and the digital signature of the access authority, the vehicle end and / or the road side end first verifies the digital signature of the access authority with the public key in the public key certificate of the cloud server; if the verification is unsuccessful, the vehicle end and / or the road side end sends a request to the cloud server to regenerate and send the access authority and the digital signature of the access authority; if the verification is successful, the vehicle end and / or the road side end then performs corresponding operations based on the access authority of the vehicle end;

[0060] In the embodiment of this case, before the cloud server also sends the vehicle-side related information to the roadside end corresponding to the one-way street, the cloud server further digitally signs the vehicle-side related information with its own private key to generate a vehicle-side related information digital signature, and then sends the vehicle-side related information and the vehicle-side related information digital signature together to the roadside end. After receiving the vehicle-side related information and the vehicle-side related information digital signature, the roadside end first verifies the vehicle-side related information digital signature with the public key in the public key certificate of the cloud server; if the verification is unsuccessful, the roadside end sends a request to the cloud server to regenerate and send the vehicle-side related information and the vehicle-side related information digital signature; if the verification is successful, the roadside end then performs corresponding operations based on the vehicle-side related information.

[0061] Preferably, the vehicle side, the cloud server and the roadside side may also add a timestamp and a random number when sending information to each other, and perform corresponding verification on the receiving side to prevent the information from being replayed.

[0062] Furthermore, based on the above method, an embodiment of the present invention further provides a V2I-based priority passage system, comprising:

[0063] The roadside terminal corresponding to a one-way street and installed in a preset area of ​​the corresponding one-way street collects images of vehicle license plates within the preset area and feeds them back to the cloud server in the V2I system. Based on the priority access rights for the corresponding one-way street sent by the cloud server, it generates priority access information to prompt the corresponding target vehicle to have priority access in the opposite direction on the one-way street and prompt other vehicles and pedestrians to give way.

[0064] Furthermore, the vehicle-side terminal installed on the vehicle registers the target vehicle license plate with the authority through the vehicle owner, and enjoys the priority passage rights on the corresponding one-way street sent by the cloud server based on the vehicle license plate;

[0065] The cloud server pre-stores the target vehicle license plate, the vehicle license plate that enjoys priority on the corresponding one-way street, the correspondence between the roadside end and the one-way street, and the end position of the one-way street corresponding to the roadside end, and generates a vehicle license plate image based on the registration application data, digitally signs the specific number of the vehicle license plate, uses the specific number and digital signature to generate a digital watermark and embeds it into the vehicle license plate image, and verifies the target vehicle that enjoys priority on the corresponding one-way street by obtaining the vehicle license plate image sent by the roadside end, and sends the target vehicle related information to the roadside end and the target vehicle corresponding to the one-way street.

[0066] By applying V2I vehicle-to-vehicle (V2I) networking and network technologies, while ensuring secure information transmission, vehicles and pedestrians can understand the current and / or incoming vehicle situation and adjust their own position, direction and / or avoidance in a timely manner, so that target vehicles performing special tasks on the vehicle side can safely and smoothly achieve priority passage in the opposite direction on a one-way street.

[0067] Furthermore, the cloud server further comprises: a digital certificate module, a cloud security module, a cloud digital watermark module and a cloud storage module, wherein:

[0068] The digital certificate module is used to generate and save public key certificates for the cloud server and issue public key certificates for the roadside and vehicle sides;

[0069] The cloud security module uses a secure smart chip to provide encryption and decryption and secure storage of information interaction data for the cloud server;

[0070] The cloud-based digital watermark module is used to digitally sign the specific number in the vehicle license plate image, and use the specific number and digital signature to generate a digital watermark and embed it into the vehicle license plate image;

[0071] The cloud storage module is used to pre-set and store the target vehicle license plate, the vehicle license plate that enjoys priority passage on the corresponding one-way street, the correspondence between the roadside end and the one-way street, and the end point position of the one-way street corresponding to the roadside end, so that the cloud server can verify the priority passage right of the target vehicle by calling and querying relevant information.

[0072] The cloud storage module is used to pre-set and store the vehicle license plate and / or vehicle identification code of the vehicle end, as well as the access permission of the one-way street corresponding to the vehicle license plate and / or vehicle identification code of the vehicle end, for query and call by the cloud server; the one-way street is determined by the geographical location information, one-way street number and / or one-way street name of the one-way street; the cloud storage module is also used to store the roadside end number; the cloud storage module can also be used to store the geographical location information of the roadside end corresponding to the roadside end number, and the geographical location information of the one-way street corresponding to the roadside end; the geographical location information of the one-way street includes but is not limited to the geographical location information of the starting point and / or end point of the one-way street; the geographical location information is but is not limited to geographical coordinates; the cloud server presets and maintains the corresponding relationship between the geographical location information of the starting point and / or end point of the one-way street and the geographical location information of the roadside end and the roadside end number, so that the information of one party can be found through the geographical location information and / or number of the other party.

[0073] A cloud-based digital watermark module is used to generate a digital watermark and embed the digital watermark into an ordinary vehicle license plate image to form a secure vehicle license plate image; and the digital watermark embedded in the vehicle license plate image can be identified and / or extracted.

[0074] The access authority of the vehicle is stored and / or verified by the cloud server; the access authority refers to whether the vehicle has the authority to reverse on a one-way street, wherein, when the vehicle specifically refers to a special vehicle that needs to reverse on a one-way street due to the execution of a task, the corresponding access authority is to allow reverse passage; when the vehicle is not a special vehicle that needs to reverse on a one-way street due to the execution of a task, the corresponding access authority is not to allow reverse passage; the cloud server is used to calculate the distance between the geographical location of the vehicle and the geographical location of the end point of the one-way street, and the vehicle license plate information is identified and extracted therefrom by recognizing the image of the vehicle license plate.

[0075] Furthermore, the roadside end further comprises: a roadside end safety module, a roadside end camera module, a traffic signal mechanism, a priority information display board and a marking projection module, wherein,

[0076] The roadside security module is used to provide encryption and decryption and secure storage of information interaction data for the roadside terminal using a secure smart chip;

[0077] Roadside camera module, used to capture images of vehicle license plates within a preset area;

[0078] Traffic signal mechanism, used to control traffic lights by changing the sequence of road traffic signals and adjusting the timing;

[0079] Priority information display board, used to display relevant data of the target vehicle currently and / or about to pass in the opposite direction for other vehicles and pedestrians to understand, such relevant data including the target vehicle's direction of travel, speed and distance from the one-way sign;

[0080] The marking projection module is used to project reverse priority traffic data onto the one-way road surface where the target vehicle is to travel. The reverse priority traffic data includes the reverse direction indicating markings and relevant data of the target vehicle.

[0081] The roadside terminal uniquely identifies the roadside terminal by assigning a roadside terminal number. The roadside terminal number can be stored in a secure storage area of ​​the roadside terminal security module. The roadside terminal can also store geographic location information of the roadside terminal and the geographic location information of the one-way street where the roadside terminal is located. A traffic signal controller is used to change the sequence of road traffic signals, adjust timing, and control the operation of road traffic lights. The traffic signal controller is a core component of the traffic signal control system and an execution unit located on the road. Its core function is to implement road traffic signal control, and it also performs functions such as traffic information collection, communication, and intersection monitoring. The traffic signal controller controls traffic lights. The traffic lights are installed at the exit and / or entrance of a one-way street. More traffic lights can be installed along the entire section of a one-way street as needed, such as at a location where a crosswalk is located in the middle of the road section. The traffic lights include but are not limited to traffic lights for indicating non-vehicles and pedestrians and traffic lights for indicating reverse priority. Non-vehicles refer to vehicles other than the vehicle terminal that needs to cross the one-way street in reverse.

[0082] The priority information display board is used to display vehicle-side related information of the vehicle side, so that other vehicles and pedestrians can understand the current and / or upcoming vehicle side situations and adjust their own positions, directions and / or avoidance in time. The specific information may include the driving direction and speed of the vehicle side, the distance from the priority information display board, etc.; the priority information display board is set at the exit and / or entrance of the one-way street, and more priority information display boards can be set up in the entire section of the one-way street according to actual needs. For example, a priority information display board can be set up at a position where there is a crosswalk in the middle of the road section.

[0083] A marking projection module is used to project reverse traffic information onto the road surface area of ​​the one-way street where the vehicle needs to have priority to pass in the reverse direction; the reverse traffic information includes but is not limited to a reverse direction indicator marking opposite to the original one-way traffic direction and vehicle-side related information of the vehicle; the reverse direction indicator marking is used to temporarily cover or replace the original one-way traffic direction indicator marking on the original one-way road surface; the vehicle-side related information is projected next to the reverse direction indicator marking, so that social vehicles and pedestrians can timely understand the relevant information of the vehicle that is and / or about to pass in the reverse direction through the reverse traffic information, and adjust their own position, direction and / or avoidance in time; the marking projection module can be set at the exit and / or entrance of the one-way street, and more marking projection modules can be set on the entire section of the one-way street according to actual needs, such as in the middle of the road section A line marking projection module can be set near the position of the crosswalk; the line marking projection module includes but is not limited to a projection lamp; the projection lamp can be a laser projection lamp and / or an LED projection lamp; the line marking projection module is mainly used to project the reverse traffic information onto the road surface under natural conditions of weak light at night or during the day; the reverse direction indicator marking is projected by the projection lamp with appropriate brightness and color, and its brightness and size must be sufficient to cover or replace the original one-way traffic direction indicator marking, so as to indicate the lane and reverse direction that the vehicle end that needs to pass through the one-way street in the reverse direction should pass, and at the same time, it can also serve as a reminder to other social vehicles and pedestrians that the vehicle end is about to reverse in the lane and direction indicated by the reverse direction indicator marking, so that social vehicles and pedestrians can immediately adjust their own position and direction and avoid it in time.

[0084] The roadside end controls the traffic signal controller, priority information display board and marking projection module according to the vehicle-side related information sent by the cloud server to reflect the vehicle-side related information and prompt social vehicles and pedestrians to take avoidance measures, which include but are not limited to waiting in place, giving way and / or detouring.

[0085] Furthermore, the vehicle side also includes a vehicle side security module and a vehicle side positioning module, wherein:

[0086] The vehicle-side security module is used to provide encryption and decryption and secure storage of information interaction data for the vehicle side using a secure smart chip;

[0087] The vehicle-side positioning module is used to obtain the vehicle's geographic location data.

[0088] Vehicle license plates, commonly known as license plates or license plates, are plates hung on the front and rear of the car, usually made of aluminum, iron, plastic or paper, on which the vehicle's registration number, registration area or other relevant information is engraved; the vehicle license plates are divided into ordinary vehicle license plates and security vehicle license plates; the ordinary vehicle license plates include but are not limited to one or more of large vehicle license plates, small vehicle license plates, embassy vehicle license plates, consulate vehicle license plates, Hong Kong and Macao entry and exit vehicle license plates, training vehicle license plates, police vehicle license plates, and temporary vehicle license plates; the security vehicle license plates are vehicle license plates generated after the digital watermark is embedded in the ordinary vehicle license plates. The vehicle identification code of the vehicle side is built into the secure storage area of ​​the vehicle side security module of the vehicle side by the vehicle manufacturer before the vehicle leaves the factory. After being built into the secure storage area of ​​the vehicle side security module, the vehicle identification code only provides read-only function, and the vehicle user cannot change the vehicle identification code built into the secure storage area of ​​the vehicle side security module; the vehicle identification code (Vehicle Identification Number, or Vehicle Frame Number, abbreviated as VIN) is a set of letters and / or numbers, a unique number used on the car, which can identify the manufacturer, engine, chassis serial number and other performance information of the car. The vehicle side related information may include the vehicle license plate, vehicle identification code, the direction of travel of the vehicle side and / or the geographical location information of the vehicle side, and may also include the body color, vehicle type, vehicle speed and other information of the vehicle side.

[0089] After establishing a wireless communication connection with the cloud server, the vehicle immediately sends vehicle-related information to the cloud server. The vehicle then continuously sends its geographic location information to the cloud server in real time. The cloud server can then track the vehicle's trajectory based on the vehicle's geographic location information. If the vehicle receives a message from the cloud server indicating reverse travel is permitted, it can proceed in reverse on the one-way street while ensuring safety. If the vehicle receives a message from the cloud server indicating reverse travel is not permitted, it cannot proceed in reverse on the one-way street and will choose a detour via another road.

[0090] The cloud-side security module, the roadside security module, and the vehicle-side security module are used to provide cryptographic service functions and secure storage functions for the cloud server, the roadside terminal, and the vehicle-side terminal, respectively. Secure storage areas can be set up in each of the cloud-side security module, the roadside terminal, and the vehicle-side security module; these secure storage areas are used to store digital certificates, private keys, and other important information and data; these other important information and data include, but are not limited to, vehicle identification codes and / or roadside terminal numbers; the cryptographic service functions include, but are not limited to, random number generation, digital signature calculations, digital signature verification calculations, encryption and decryption calculations, session key generation, digital digest generation, digital certificate verification, and digital certificate revocation list queries; digital certificates are also called public key certificates.

[0091] A digital certificate module is used to generate and save public key certificates for the cloud server, the roadside end and the vehicle end respectively; the digital certificate module can write the public key certificate of the roadside end and the root certificate of the cloud server into the roadside end security module of the roadside end in an offline or online manner; the public key certificate of the vehicle end and the root certificate of the cloud server can also be written into the vehicle end security module of the vehicle end in an offline or online manner; the public key certificates of the roadside end and the vehicle end can be issued by the root certificate of the cloud server.

[0092] The cloud server, the roadside end and the vehicle end each store a private key corresponding to the public key in its corresponding public key certificate; the private key of the cloud server is stored in a secure storage area of ​​the digital certificate module or the cloud security module; the private key of the roadside end is stored in a secure storage area of ​​the roadside end security module; and the private key of the vehicle end is stored in a secure storage area of ​​the vehicle end security module.

[0093] The cloud server may be pre-installed with a correspondence between the roadside terminal number and the roadside terminal's public key certificate, so that the roadside terminal's public key certificate can be retrieved and obtained by using the roadside terminal number. Furthermore, the cloud server may be pre-installed with a correspondence between the vehicle identification code and the vehicle license plate, so that the vehicle license plate information of the vehicle can be retrieved and obtained by using the vehicle identification code, and the vehicle identification code information of the vehicle can also be retrieved and obtained by using the vehicle license plate. Furthermore, the cloud server may be pre-installed with a correspondence between the vehicle identification code and / or vehicle license plate and the vehicle's public key certificate, so that the vehicle license plate's public key certificate can be retrieved and obtained by using the vehicle identification code and / or vehicle license plate.

[0094] Preferably, the cloud security module, the roadside security module and the vehicle-side security module are all security smart chips. The commercial cryptographic algorithms supported by the security smart chip include but are not limited to one or more of SM1, SM2, SM3, SM4 and SM9, and the internationally commonly used cryptographic algorithms supported include but are not limited to one or more of 3DES, AES, RSA, SHA-1 and SHA-256; the security smart chip supports the storage of digital certificates; the security smart chip provides a secure storage area to support the secure storage of important information; the security smart chip supports the generation of random numbers; the digital certificate module also maintains a certificate revocation list and provides a certificate revocation list query function.

[0095] The vehicle management department may be an authoritative management department, and the specific responsible department shall be subject to the relevant regulations; the vehicle management department saves the vehicle license plate and the vehicle identification code corresponding to the vehicle license plate when it is registered with the vehicle management department on the cloud server for future reference.

[0096] Preferably, the roadside camera module can collect vehicle license plate images and related data by setting a first camera, a second camera, a third camera, a vehicle license plate recognition module, a vehicle license plate synthesis module, a light sensing module and a fill light module; wherein, the first camera can be used to collect real-time video information of the vehicle end, and the first camera can be equipped with an infrared camera function; the second camera can be a telephoto camera, which can take a picture of the vehicle license plate on the vehicle end; the third camera can be a wide-angle camera, which can take a picture of the vehicle license plate on the vehicle end; the vehicle license plate recognition module can recognize the video information collected by the first camera in real time, and if the vehicle license plate image information is recognized in the video information, it can be used to collect real-time video information of the vehicle end. The second camera and the third camera are called to take pictures of the safety vehicle license plate; the second camera and the third camera can dynamically change the shooting angle to aim at the vehicle end under the scheduling of the vehicle license plate recognition module, and then automatically adjust the focal length to provide better shooting quality; the vehicle license plate synthesis module can be used to calculate and synthesize the vehicle license plate images taken by the second camera and the third camera respectively to obtain a clear and high-quality vehicle license plate image; the light sensing module can be used to sense whether the light intensity is appropriate when the second camera and the third camera take pictures, and call the fill light module for fill light as needed; the fill light module can be used to fill light when the second camera and the third camera take pictures.

[0097] Preferably, the first camera can adopt an ultra-high-definition camera or a full-high-definition camera with a resolution reaching or exceeding 1080P (1920*1080) and above, and is mainly used to shoot videos during driving to provide them to the vehicle license plate recognition module for identifying the vehicle license plate; the first camera can also adopt a binocular camera; the second camera and the third camera can adopt ultra-high-resolution lenses (such as 45 million pixels and above) to take pictures of the vehicle license plate and generate image information of the vehicle license plate.

[0098] Furthermore, smart road studs may be provided at the roadside end, and the smart road studs may be used to indicate the direction of reverse priority passage of the vehicle end on the road surface and / or roadside area of ​​the one-way street where the vehicle end needs reverse priority passage based on the vehicle end related information of the vehicle end. For example, the direction of reverse priority passage of the vehicle end may be indicated by a luminous color or a luminous colored arrow, and the color may be red, green or other colors; the smart road studs may include a light-emitting component; and the light-emitting component may be a colored LED light-emitting material.

[0099] The roadside may further be provided with a voice prompt module, which is used to broadcast vehicle-side related information of the vehicle, so that vehicles and pedestrians can understand the current and upcoming situations of the vehicle. The voice prompt module may be provided at the exit and / or entrance of a one-way street. More voice prompt modules may be provided along the entire section of a one-way street according to actual needs. For example, a voice prompt module may be provided at a location with a crosswalk in the middle of the road section.

[0100] In the embodiment of this case, the one-way street includes at least two lanes, and the leftmost lane of the original traffic direction of the one-way street is set as a variable traffic direction lane; when there is no vehicle end that needs to pass in the opposite direction, the leftmost lane maintains the same traffic direction as other lanes; when there is a vehicle end that needs to pass in the opposite direction, the leftmost lane becomes a lane opposite to the original traffic direction. At this time, the leftmost lane is changed into a dedicated reverse lane for the vehicle end that needs to pass in the opposite direction, and private vehicles continue to pass in the original direction through the other lanes.

[0101] The leftmost lane corresponds to a traffic light for indicating reverse priority passage, and the other lanes correspond to traffic lights for indicating social vehicles and pedestrians. When there is no vehicle requiring reverse priority passage that needs to pass in reverse, the traffic signal sequence and adjustment timing of the traffic light for indicating reverse priority passage are consistent with those of the traffic light for indicating social vehicles and pedestrians. When there is a vehicle requiring reverse priority passage that needs to pass in reverse, the traffic signal sequence and adjustment timing of the traffic light for indicating reverse priority passage are coordinated with the vehicle requiring reverse priority passage to pass in reverse. Specifically, a green light may be displayed for the vehicle requiring reverse priority passage, and a red light may be displayed for social vehicles and pedestrians in the original direction of passage. When a vehicle requiring reverse priority passage needs to pass in reverse, the marking projection module projects reverse traffic information to the leftmost lane.

[0102] The leftmost lane may not be pre-installed with an indicator marking indicating the direction of travel of the one-way lane; the pre-installed indicator marking indicating the direction of travel of the one-way lane refers to a road marking formed by directly spraying it on the one-way road surface by hot melting; when there is no vehicle end that needs to pass in the opposite direction and needs to pass in the opposite direction, the line marking projection module projects the original one-way lane direction indicator marking in the form of light and shadow to the leftmost lane. At this time, the direction indicated by the one-way lane direction indicator marking is consistent with the direction indicated by the pre-installed one-way lane direction indicator markings on the other lanes; when there is a vehicle end that needs to pass in the opposite direction and needs to pass in the opposite direction, the line marking projection module projects reverse traffic information to the leftmost lane. At this time, the direction indicated by the traffic direction indicator marking projected by the line marking projection module on the one-way lane is opposite to the direction indicated by the pre-installed one-way lane direction indicator markings on the other lanes.

[0103] Unless otherwise specifically stated, the relative steps, numerical expressions and values ​​of the components and steps set forth in these embodiments do not limit the scope of the present invention.

[0104] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. Reference can be made to the common and similar parts between the various embodiments. For the systems disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple, and the relevant parts can be referred to the method description.

[0105] The units and method steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of the two. In order to clearly illustrate the interchangeability of hardware and software, the components and steps of each example have been generally described in terms of function in the above description. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. A person of ordinary skill in the art may use different methods to implement the described functions for each specific application, but such implementation is not considered to be beyond the scope of the present invention.

[0106] Those skilled in the art will appreciate that all or part of the steps in the above method can be performed by a program instructing related hardware. The program can be stored in a computer-readable storage medium, such as a read-only memory, a magnetic disk, or an optical disk. Alternatively, all or part of the steps in the above embodiment can be implemented using one or more integrated circuits. Accordingly, each module / unit in the above embodiment can be implemented in the form of hardware or software functional modules. The present invention is not limited to any specific combination of hardware and software.

[0107] Finally, it should be noted that the above-described embodiments are only specific implementation methods of the present invention, which are used to illustrate the technical solutions of the present invention, rather than to limit them. The scope of protection of the present invention is not limited thereto. Although the present invention has been described in detail with reference to the above-described embodiments, those skilled in the art should understand that any person skilled in the art can modify or easily conceive of changes to the technical solutions described in the above-described embodiments within the technical scope disclosed by the present invention, or replace some of the technical features therein with equivalents. Such modifications, changes, or replacements do not deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be subject to the scope of protection of the claims.

Claims

1. A one-way street priority method based on V2I, characterized in that: Based on information exchange between the V2I cloud server, vehicle-side, and roadside terminals, priority passage in the opposite direction on a one-way street is achieved for vehicles with specific missions. The implementation process includes the following: The vehicle owner registers the target license plate with the authority. The cloud server generates a license plate image based on the registration application data, digitally signs the specific number on the license plate, and uses the specific number and digital signature to generate a digital watermark that is embedded in the license plate image. The cloud server also stores the target license plate, the license plates that enjoy priority on the corresponding one-way street, the correspondence between the roadside end and the one-way street, and the location of the roadside end corresponding to the one-way street end in advance. The roadside end is set to capture the license plate image within a certain range. After the vehicle-side is wirelessly connected to the cloud server, it sends vehicle-side related information to the cloud server; when the target vehicle on the vehicle-side enters the preset area of ​​the roadside end, the roadside end captures the image of the vehicle license plate on the vehicle-side end and sends the image of the vehicle license plate and the roadside end number to the cloud server; The cloud server identifies and extracts the target vehicle license plate in the vehicle license plate image, matches the extracted target vehicle license plate and roadside end data with pre-stored data to verify whether the target vehicle has the right of passage on the corresponding one-way street; and feeds back the verification result to the target vehicle and the roadside end; generates priority passage indication information through the roadside end, so that the target vehicle has priority in the reverse direction on the one-way street; wherein, the roadside end sends the image of the vehicle license plate and the roadside end number to the cloud server, and also sends the digital signature information of the image of the vehicle license plate and the roadside end number using the private key of the roadside end; after receiving the image of the vehicle license plate and the roadside end number and the digital signature information of the image of the vehicle license plate and the roadside end number, the cloud server uses the public key in the public key certificate of the roadside end to verify the digital signature information of the image of the vehicle license plate and the roadside end number; if the signature verification fails, the right of passage not allowing reverse passage is directly returned to the roadside end and the vehicle end; The cloud server also sends the vehicle-side related information to the roadside end corresponding to the one-way street. Then, the roadside end controls the traffic signal control machine, priority information display board and marking projection module according to the vehicle-side related information to reflect the vehicle-side related information and prompt social vehicles and pedestrians to take avoidance measures.

2. The V2I-based one-way street priority method according to claim 1, characterized in that: The cloud server identifies and extracts the target vehicle license plate from the vehicle license plate image, and matches the extracted target vehicle license plate and the roadside data with the pre-stored data to verify whether the target vehicle has the right of passage on the corresponding one-way street, including: first, extracting the vehicle license plate information by identifying the vehicle license plate image, and searching for the one-way street position corresponding to the roadside end based on the roadside data; then, comparing the extracted vehicle license plate information with the pre-stored vehicle license plate information. If the relevant vehicle license plate is matched, it is searched whether the target vehicle has the priority right of passage on the corresponding one-way street on the roadside end. If so, it continues to identify the digital watermark in the vehicle license plate image, extracts the information in the digital watermark and verifies the digital signature. If the verification is successful, it is determined that the target vehicle has the priority right of passage on the corresponding one-way street. Otherwise, the target vehicle does not have the priority right of passage on the corresponding one-way street.

3. The V2I-based one-way street priority method according to claim 1 or 2, characterized in that: For target vehicles that enjoy priority passage rights, the cloud server obtains the target vehicle's geographic location in real time, and compares the distance between the target vehicle's geographic location and the corresponding one-way street end position with a preset threshold. If the distance reaches or is less than the preset threshold, the target vehicle is allowed to pass through the corresponding one-way street in the opposite direction with priority, and the passage permission verification result is fed back to the target vehicle and the roadside end; if the distance is higher than the preset threshold, the target vehicle's geographic location is continuously collected, and the distance between the target vehicle's geographic location and the geographic location of the end point of the one-way street to be traveled is updated, and the distance and the preset threshold are continuously judged until the distance reaches or is less than the preset threshold, and the target vehicle is allowed to pass through the corresponding one-way street in the opposite direction with priority, and the passage permission verification result is fed back to the target vehicle and the roadside end.

4. The V2I-based one-way street priority method according to claim 1 or 2, characterized in that: A secure smart chip is used to exchange information securely between the roadside, vehicle and IoV cloud servers. The secure smart chip uses cryptographic algorithms to encrypt data.

5. The V2I-based one-way street priority method according to claim 4, characterized in that: The cryptographic algorithms include: one or more combinations of SM1, SM2, SM3, SM4, SM9, 3DES, AES, RSA, SHA-1, and SHA-256.

6. The V2I-based one-way street priority method according to claim 1, characterized in that: When the vehicle side contains multiple target vehicles, the multiple target vehicles are queued according to the distance between the geographical location of each target vehicle and the end point of the one-way street and the time sequence of the target vehicles at the current geographical location. The cloud server verifies the target vehicle's access rights according to the queueing order. Among them, in the queueing process, the target vehicles with closer distances are placed at the front of the queue according to the distance between the geographical location of the target vehicle and the end point of the one-way street. If the distances are the same, the target vehicles with earlier request times are placed at the front of the queue according to the time sequence of the current geographical location.

7. A one-way priority system based on V2I, characterized in that: The method according to claim 1 is implemented, comprising: The roadside terminal corresponding to a one-way street and installed in a preset area of ​​the corresponding one-way street collects images of vehicle license plates within the preset area and feeds them back to the cloud server in the V2I system. Based on the priority access rights for the corresponding one-way street sent by the cloud server, it generates priority access information to prompt the corresponding target vehicle to have priority access in the opposite direction on the one-way street and prompt other vehicles and pedestrians to give way. Furthermore, the vehicle-side terminal installed on the vehicle registers the target vehicle license plate with the authority through the vehicle owner, and enjoys the priority passage rights on the corresponding one-way street sent by the cloud server based on the vehicle license plate; The cloud server pre-stores the target vehicle license plate, the license plate of the vehicle that enjoys priority on the corresponding one-way street, the correspondence between the roadside end and the one-way street, and the end point of the one-way street corresponding to the roadside end. It generates a vehicle license plate image based on the registration application data, digitally signs the specific number of the vehicle license plate, uses the specific number and digital signature to generate a digital watermark and embeds it into the vehicle license plate image. It verifies the target vehicle that enjoys priority on the corresponding one-way street by obtaining the vehicle license plate image sent by the roadside end, and sends relevant information about the target vehicle to the roadside end corresponding to the one-way street and the target vehicle. The vehicle terminal is further configured to send vehicle terminal related information to the cloud server after wireless communication connection with the cloud server; The cloud server is further configured to send the vehicle-side related information to the roadside terminal corresponding to the one-way street; The roadside end is also used to control the traffic signal controller, priority information display board and marking projection module according to the vehicle-side related information to reflect the vehicle-side related information and prompt social vehicles and pedestrians to take avoidance measures.

8. The V2I-based one-way priority system according to claim 7, characterized in that: The cloud server also includes: a digital certificate module, a cloud security module, a cloud digital watermark module and a cloud storage module, wherein: The digital certificate module is used to generate and save public key certificates for the cloud server and issue public key certificates for the roadside and vehicle sides; The cloud security module uses a secure smart chip to provide encryption and decryption and secure storage of information interaction data for the cloud server; The cloud-based digital watermark module is used to digitally sign the specific number in the vehicle license plate image, and use the specific number and digital signature to generate a digital watermark and embed it into the vehicle license plate image; The cloud storage module is used to pre-set and store the target vehicle license plate, the vehicle license plate that enjoys priority passage on the corresponding one-way street, the correspondence between the roadside end and the one-way street, and the end point position of the one-way street corresponding to the roadside end, so that the cloud server can verify the priority passage right of the target vehicle by calling and querying relevant information.

9. The V2I-based one-way priority system according to claim 7, characterized in that: The roadside end further comprises: a roadside end safety module, a roadside end camera module, a traffic signal mechanism, a priority information display board and a marking projection module, wherein, The roadside security module is used to provide encryption and decryption and secure storage of information interaction data for the roadside terminal using a secure smart chip; Roadside camera module, used to capture images of vehicle license plates within a preset area; Traffic signal mechanism, used to control traffic lights by changing the sequence of road traffic signals and adjusting the timing; Priority information display board, used to display relevant data of the target vehicle currently and / or about to pass in the opposite direction for other vehicles and pedestrians to understand, such relevant data including the target vehicle's direction of travel, speed and distance from the one-way sign; The marking projection module is used to project reverse priority traffic data onto the one-way road surface where the target vehicle is to travel. The reverse priority traffic data includes the reverse direction indicating markings and relevant data of the target vehicle.

10. The V2I-based one-way priority system according to claim 7, characterized in that: The vehicle end also includes a vehicle end safety module and a vehicle end positioning module, wherein: The vehicle-side security module is used to provide encryption and decryption and secure storage of information interaction data for the vehicle side using a secure smart chip; The vehicle-side positioning module is used to obtain the vehicle's geographic location data.

Images