Vehicle marking and information spreading method for vehicle-road cooperation system of double-layer extra-large bridge

Abstract

The invention discloses a vehicle marking and information dissemination method for a vehicle-road cooperation system of a double-layer extra-large bridge, an execution main body is a roadside facility, and the method comprises the following steps: identifying a license plate of a vehicle, and obtaining a hierarchical mark of the vehicle; traffic related information of the double-layer extra-large bridge is collected; adding a specific identifier on the traffic related information, and packaging to obtain a data frame; and analyzing the data frame to obtain the applicable object and the transmission direction. Generating early warning information based on the traffic related information of the double-layer extra-large bridge; on the basis of the emergency level of the early warning information, the weight of the early warning information and the reaction time of past early warning information, sorting the early warning information by using a rapid sorting or heap sorting algorithm; and according to the sequence, the related early warning information is sequentially sent to the vehicles of the corresponding levels. According to the invention, the method achieves the precise recognition of the level of the vehicle, is high in automation degree, and remarkably improves the accuracy.

Description

Technical Field

[0001] The present invention relates to a vehicle marking and information transmission method for a double-deck super-large bridge vehicle-road cooperative system, belonging to the technical field of XX. Background Art

[0002] In the existing intelligent transportation system, vehicle-road cooperative technology realizes the sharing and processing of traffic information through real-time communication between roadside facilities (such as RSU, LiDAR, millimeter-wave radar, cameras, etc.) and vehicles. However, in special scenarios such as double-deck super-large bridges, the information collected by the upper and lower roadside facilities may interfere with each other, resulting in misjudgment of information or reduced transmission efficiency. In particular, the information collected by the upper roadside facilities may be mistakenly transmitted to the lower vehicles, causing unnecessary confusion and safety hazards. Summary of the invention

[0003] The technical problem to be solved by the present invention is to overcome the defects of the prior art and provide a vehicle marking and information dissemination method for a double-deck super-large bridge vehicle-road cooperative system. The present invention aims to solve the problem of hierarchical management of vehicle alarm information in a double-deck bridge structure, especially when the upper and lower vehicles share a communication environment, the upper vehicle mistakenly receives the lower ECU (electronic control unit) alarm information. In the existing intelligent transportation system, due to the special structure of the double-deck bridge, the upper and lower vehicles are often in the same communication coverage, resulting in the upper vehicle may receive lower-level alarm information that is irrelevant to itself, which not only interferes with the driver's attention, but also may cause unnecessary panic and misjudgment, and have an adverse impact on driving safety and traffic efficiency.

[0004] Preferably, the present invention provides a vehicle marking and information dissemination method for a vehicle-road cooperative system of a double-deck extra-large bridge, the execution subject being a roadside facility, comprising: Identify the vehicle's license plate and obtain the vehicle's level mark; Collect traffic-related information of the double-deck bridge; Add specific identification to traffic related information and encapsulate to obtain data frame; Parse the data frame to obtain the applicable object and transmission direction.

[0005] Prioritizing, generating early warning information based on traffic-related information of the double-deck super-large bridge; Based on the urgency level of the warning information, the weight of the warning information and the response time of the past warning information, the warning information is sorted using a quick sort or heap sort algorithm; According to the sorting, the relevant warning information will be sent to the vehicles at the corresponding level in turn.

[0006] Preferably, a vehicle marking and information dissemination method for a double-deck super-large bridge vehicle-road cooperative system is characterized by comprising: Before a vehicle enters the double-deck bridge, the camera in the roadside facilities is used to identify the vehicle's license plate and obtain the vehicle's level mark; The vehicle's level mark is transmitted to the on-board intelligent terminal of the corresponding vehicle.

[0007] Prioritize the use of roadside facilities on double-deck mega bridges to collect traffic-related information; Add specific identification to traffic related information and encapsulate to obtain data frame; The vehicle's on-board unit OBU or roadside facilities are used to parse the data frame to obtain the applicable object and transmission direction.

[0008] Preferably, a specific identifier is added to the traffic related information, and the data frame is encapsulated and obtained, including: Add the "A_INFO" logo to the frame header of the traffic-related information collected from vehicles traveling on the upper deck of the double-deck super-large bridge; The "A_INFO" identifier, source address, destination address, and traffic related information are encapsulated to obtain a data frame.

[0009] Preferably, a specific identifier is added to the traffic related information, and the data frame is encapsulated and obtained, including: Add the "B_INFO" mark to the frame header of the traffic-related information collected from vehicles traveling on the upper deck of the double-deck super-large bridge; The "B_INFO" identifier, source address, destination address, and traffic related information are encapsulated to obtain a data frame.

[0010] Preferably, the present invention provides an electronic device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the steps of any one of the methods described in the first aspect when executing the program.

[0011] Preferably, the present invention provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of any one of the methods described in the first aspect.

[0012] The beneficial effects achieved by the present invention are: The present invention collects vehicle information through a camera, uses an edge computing unit (MEC) to make hierarchical judgments, and uploads the vehicle's hierarchical label to the cloud. The cloud platform then communicates with the vehicle TBOX, sends the hierarchical label to the vehicle, and is received by the on-board OBU (on-board unit). When the roadside unit (RSU) broadcasts warning information, the system can ensure that the on-board OBU filters the warning information according to the hierarchical label, and only retains the warning information related to the vehicle's level, thereby effectively shielding the warning information of other levels. In this way, the driver can accurately receive the alarm information related to his own level, improve driving safety and traffic efficiency, and reduce potential risks caused by misjudgment. It aims to solve the problem of hierarchical management of vehicle alarm information in a double-deck bridge structure, especially when the upper and lower vehicles share a communication environment, the upper vehicle mistakenly receives the lower ECU (electronic control unit) alarm information. In the existing intelligent transportation system, due to the special structure of the double-deck bridge, vehicles on the upper and lower decks are often within the same communication coverage range, which may cause the upper-deck vehicles to receive lower-deck alarm information that is irrelevant to themselves. This not only interferes with the driver's attention, but may also cause unnecessary panic and misjudgment, and have an adverse impact on driving safety and traffic efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solution of the present application, the drawings required for use in the embodiments are briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0014] Figure 1 is a principle block diagram of some embodiments of the present application; Figure 2 is a schematic diagram of collecting information in some embodiments of the present application; Figure 3 It is a schematic diagram of the vehicle-road cooperative system of a double-deck super-large bridge in some embodiments of the present application. DETAILED DESCRIPTION Example

[0015] See also Figure 1 The present application discloses a vehicle marking and information dissemination method for a double-deck super-large bridge vehicle-road cooperative system, the execution subject is a roadside facility, including: Identify the vehicle's license plate and obtain the vehicle's level mark; Collect traffic-related information of the double-deck bridge; Add specific identification to traffic related information and encapsulate to obtain data frame; Parse the data frame to obtain the applicable object and transmission direction.

[0016] In the embodiment of the present application, warning information is generated based on traffic-related information of the double-deck super-large bridge; Based on the urgency level of the warning information, the weight of the warning information and the response time of the past warning information, the warning information is sorted using a quick sort or heap sort algorithm; According to the sorting, the relevant warning information will be sent to the vehicles at the corresponding level in turn.

[0017] In an embodiment of the present application, a vehicle marking and information dissemination method of a double-deck super-large bridge vehicle-road cooperative system is characterized by comprising: Before a vehicle enters the double-deck bridge, the camera in the roadside facilities is used to identify the vehicle's license plate and obtain the vehicle's level mark; The vehicle's level mark is transmitted to the on-board intelligent terminal of the corresponding vehicle.

[0018] In the embodiment of the present application, the roadside facilities of the double-deck super-large bridge are used to collect traffic related information; Add specific identification to traffic related information and encapsulate to obtain data frame; The vehicle's on-board unit OBU or roadside facilities are used to parse the data frame to obtain the applicable object and transmission direction.

[0019] In the embodiment of the present application, a specific identifier is added to the traffic-related information, and a data frame is encapsulated to obtain the data frame, including: Add the "A_INFO" logo to the frame header of the traffic-related information collected from vehicles traveling on the upper deck of the double-deck super-large bridge; The "A_INFO" identifier, source address, destination address, and traffic related information are encapsulated to obtain a data frame.

[0020] In the embodiment of the present application, a specific identifier is added to the traffic-related information, and a data frame is encapsulated to obtain the data frame, including: Add the "B_INFO" mark to the frame header of the traffic-related information collected from vehicles traveling on the upper deck of the double-deck super-large bridge; The "B_INFO" identifier, source address, destination address, and traffic related information are encapsulated to obtain a data frame.

[0021] In an embodiment of the present application, the present invention provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the steps of any of the above methods when executing the program.

[0022] In an embodiment of the present application, the present invention provides a computer-readable storage medium having a computer program stored thereon, and when the computer program is executed by a processor, the steps of any of the above methods are implemented. Example

[0023] The double-deck extra-large bridge vehicle-road cooperative system of the present invention is mainly composed of the following core parts: intersection camera and recognition system, central control system, roadside facilities (RSU, laser radar, millimeter-wave radar, camera, etc.), information coding and directional transmission module, and vehicle-mounted APP server module.

[0024] The process starts with capturing and collecting the license plate information of passing vehicles through cameras, which is the starting point of the entire process. Subsequently, this information is transmitted to the edge computing unit (MEC) in real time for further processing. MEC intelligently determines the level of each vehicle based on the unique identification of the camera and labels these vehicles with corresponding level labels. After processing, MEC uploads these level labels to the cloud for subsequent information distribution and efficient management.

[0025] After receiving these hierarchical labels, the cloud platform will communicate with the TBOX terminal on the vehicle and accurately send the labels to the TBOX of each vehicle. The TBOX then uses the in-vehicle network to establish a stable communication connection with the on-board OBU and pass the hierarchical labels to the OBU. In this way, the OBU can identify and process warning information closely related to the vehicle hierarchy based on the hierarchical labels. Finally, the roadside unit (RSU) will broadcast warning information containing the hierarchical labels.

[0026] After receiving this information, the on-board OBU will intelligently filter out the warning information related to the vehicle's level based on the level label previously transmitted from TBOX, and effectively shield the warning information of other levels, thereby avoiding misjudgment and unnecessary interference of the driver.

[0027] This paper proposes an innovative information directional transmission system for the vehicle-road collaborative environment of a double-deck super-large bridge. The system collects license plate information through a camera and combines cloud transmission technology to achieve accurate identification of the vehicle's level (upper or lower layer) and directional transmission of information. This improvement significantly improves the accuracy and efficiency of information transmission, injecting new vitality into the development of intelligent transportation systems.

[0028] The challenges of existing vehicle-road cooperative systems in complex traffic environments such as super-large bridges include: a) Information input relies on manual operation: Traditional vehicle-road cooperative systems often rely on manual input of vehicle and road condition information, which is inefficient and prone to errors.

[0029] b) Single information transmission method: Existing systems usually adopt broadcast transmission, which makes it difficult to achieve accurate and targeted transmission of information, resulting in information mistransmission and reduced transmission efficiency.

[0030] c) Limited information capacity: Traditional vehicle-road cooperative systems are unable to handle large-scale, high-density data transmission and cannot meet the needs in complex traffic environments.

[0031] In response to the above problems, the present invention, based on the original vehicle-road cooperative system, effectively solves the problem of hierarchical management of vehicle alarm information in a double-deck bridge structure, and solves it in the following ways: For problem a, the present invention utilizes the automatic recognition and communication capabilities of roadside facility cameras and TBOX (vehicle-mounted intelligent terminal) technology, and abandons the traditional manual input method. Before a vehicle enters a double-deck extra-large bridge, the roadside facility camera will automatically capture the license plate information, and through data interaction with the cloud server, quickly assign a hierarchical tag (upper or lower layer) to the vehicle. The tag is then transmitted to the TBOX of the corresponding vehicle via a wireless network to achieve automatic association with the vehicle information, without the need for manual operation throughout the process, thereby greatly improving the accuracy and efficiency of information input.

[0032] In response to problem b, the present invention optimizes the information encoding and directional transmission modules, especially making key improvements in the data link layer. After collecting traffic-related information, the upper roadside facilities (such as RSU, laser radar, etc.) will encapsulate this information into data frames for transmission. In order to distinguish information at different levels (such as the upper and lower levels of a double-deck super-large bridge), the present invention adds a specific "A_INFO" identifier to the frame header of the data frame.

[0033] The "A_INFO" identifier is a key field and is encapsulated in the frame header of the data frame together with the source address, destination address, control information, etc. This identifier not only indicates the hierarchical attributes of the information (for example, information for upper-level vehicles will carry the "A_INFO" identifier), but also allows the receiver (such as the on-board unit OBU or other roadside facilities) to quickly identify the applicable object and transmission direction of the information when parsing the data frame.

[0034] In this way, the present invention realizes accurate and directional transmission of information. The information collected by the upper-level roadside facilities will carry the "A_INFO" mark and be sent directly to the upper-level vehicles through the data link layer, avoiding mistransmission of information and unnecessary broadcasting. At the same time, the lower-level roadside facilities also follow the same rules, but may use different marks (such as "B_INFO") to distinguish the information of the lower-level vehicles.

[0035] This optimization not only significantly improves the accuracy and efficiency of information transmission, but also reduces network congestion and resource waste, providing strong support for intelligent transportation systems in complex traffic environments such as double-deck super-large bridges.

[0036] For question c, the combination of license plate information captured by the camera and the communication function of TBOX (vehicle-mounted intelligent terminal) greatly expands the capacity and diversity of information transmission. By accurately capturing the license plate number of each vehicle through the camera, the system can uniquely identify each vehicle and establish a stable communication connection with the vehicle's TBOX. This allows the information package related to each vehicle to contain more diverse and richer data types, which not only meets the needs of large-scale, high-density data transmission, but also ensures the personalization and accuracy of the information.

[0037] The present invention also uses a filtering and prioritization algorithm to filter messages. The implementation details of the filtering and prioritization algorithm can be divided into the following aspects: Filtering algorithm: Condition setting: Define rules to match the vehicle's level label with the warning information level. For example, use simple "if-else" statements or more complex logical conditions.

[0038] Data structure: Use efficient data structures (such as hash tables) to store level labels and corresponding warning information for fast search and matching.

[0039] Real-time processing: Implement real-time data stream processing on edge computing devices to ensure that the filtering process is rapid to reduce latency.

[0040] Prioritization algorithm: Weight calculation: Assign a weight to each warning message, taking into account factors such as urgency, relevance, and historical feedback (e.g., response time to similar warnings in the past).

[0041] Sorting method: You can use algorithms such as quick sort and heap sort to sort the filtered information according to weight.

[0042] Dynamic Adjustment: Dynamically update weights and sorting rules based on real-time traffic conditions or driver feedback to optimize alert delivery.

[0043] Interface and Feedback: User Interface: Design an intuitive user interface to ensure drivers can quickly understand and respond to prioritized warning messages.

[0044] System Feedback: Implement a mechanism to collect driver response data for further optimizing the accuracy of filtering and sorting algorithms.

[0045] In summary, the present invention effectively solves the challenges faced by existing vehicle-road cooperative systems in complex traffic environments such as super-large bridges by integrating multiple core functional modules such as TBOX marking technology, information coding and directional transmission strategy, and on-board APP server module, providing strong technical support for the development of intelligent transportation systems.

[0046] The beneficial effects of the present invention are mainly reflected in the following aspects: By capturing license plate information through a camera and interacting with a cloud server, the present invention achieves accurate identification of the vehicle's level (upper or lower). This identification method is not only highly automated, but also significantly improves accuracy, effectively avoiding errors and delays caused by traditional manual input methods.

[0047] The present invention uses the communication function of TBOX (vehicle-mounted intelligent terminal) to achieve directional transmission of information. Roadside facilities can intelligently filter out real-time traffic information closely related to the vehicle's driving lane based on the vehicle's hierarchical mark, and quickly send this information to the vehicle-mounted terminal of the target vehicle through the V2X communication network. This directional transmission method ensures the accuracy and pertinence of information, effectively avoids mistransmission and redundancy of information, and thus improves the efficiency of information transmission.

[0048] The invention also significantly optimizes traffic flow management. By providing drivers with key information such as road conditions ahead and traffic accident warnings in real time, the invention helps drivers to more accurately judge road conditions and adjust driving strategies in a timely manner. This not only reduces traffic congestion and accident risks caused by poor information flow, but also improves the overall traffic capacity and safety of the double-deck super-large bridge. Example

[0049] When a vehicle is about to enter the double-deck bridge, it will go through a series of carefully designed steps to ensure that it can efficiently and accurately obtain real-time information related to its lane, thereby achieving safe and smooth travel. The following is a detailed description of these steps: (1) Vehicle Identification and Lane Assignment The camera is connected to the edge computing unit (MEC) through a wired or wireless network, and the collected vehicle information is transmitted to the MEC in real time.

[0050] After receiving the vehicle information transmitted by the camera, MEC uses the built-in algorithm and database to determine the level of the vehicle based on the unique identification of the camera (such as number, location, etc.). The level here can be divided according to actual needs, such as urban main roads, secondary roads, branch roads, etc. After the judgment is completed, MEC will label each vehicle with the corresponding level label and upload the label information to the cloud server.

[0051] After receiving the level tags uploaded by MEC, the cloud server communicates with the TBOX terminal on the vehicle through the vehicle management system. Figure 2 As shown, the communication method can adopt wireless network (such as 4G / 5G, Wi-Fi, etc.) to safely and accurately send the hierarchical labels to the TBOX of each vehicle.

[0052] (2) Reading and information orientation of driving signs In this step, the roadside facilities not only identify the vehicle's driving mark, but also intelligently filter out real-time traffic information closely related to the vehicle's driving lane based on this mark. This information may cover key content such as road conditions ahead, traffic accident warnings, driving speed limits and optimization suggestions, which are essential for improving driving safety and traffic efficiency. Subsequently, this information is carefully packaged into data frames, and the corresponding identification of the driving lane is added to the frame header (such as "A_INFO" for the upper layer and "B_INFO" for the lower layer) to ensure the accuracy and directional transmission of the information. Figure 3 shown.

[0053] Through the powerful bridge of V2X communication network, an efficient and stable connection is established between roadside facilities and vehicle terminals. Data frames carrying accurate information are quickly sent to the vehicle terminals of target vehicles, providing drivers with real-time and comprehensive road condition information support.

[0054] (3) V2X communication and real-time information reception When the vehicle's on-board terminal receives real-time information from roadside facilities, its built-in processor will immediately process and analyze the information. With its powerful computing power, the on-board terminal converts complex road condition data into intuitive and easy-to-understand graphics, text or sound prompts, and directly displays them to the driver.

[0055] This information display may include dynamically updated road condition maps, eye-catching warning icons, voice-broadcast speed recommendations and emergency prompts, etc., to help drivers fully understand the real-time changes in the surrounding environment. After receiving this information, drivers can respond quickly and adjust their driving strategies, such as changing lanes in advance to avoid congestion, slowing down to pass through accident areas, or following optimal speed recommendations, so as to ensure safe and smooth driving.

[0056] Through the efficient operation of the V2X communication network and the intelligent processing of on-board terminals, seamless information exchange and sharing is achieved between vehicles and transportation infrastructure, injecting new vitality into the intelligent transportation system in complex traffic environments such as double-deck super-large bridges.

[0057] (4) Safe and smooth travel With the guidance of real-time information, drivers can more accurately judge road conditions and adjust driving strategies in a timely manner. Whether accelerating to pass through unobstructed sections or slowing down to avoid congested areas, vehicles can make the best choice based on real-time information. Ultimately, the vehicle will safely and smoothly pass through the double-deck super-large bridge and achieve its driving purpose.

[0058] Through the above vehicle-based step description, we can see that the double-deck super-large bridge vehicle-road collaborative information directional transmission system of the present invention not only improves the accuracy and efficiency of information transmission, but also greatly enhances the vehicle's traffic capacity and safety in complex traffic environments.

[0059] The implementation of the present invention also has extensive social benefits. By improving the intelligence level of the transportation system, the present invention provides the public with a safer, more efficient and more convenient travel environment. At the same time, the present invention also helps to promote the development of intelligent transportation systems and inject new impetus into the innovation and upgrading of the transportation industry.

[0060] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referenced to each other, and each embodiment focuses on the differences from other embodiments.

[0061] Those skilled in the art will readily appreciate other embodiments of the invention after considering the specification and practicing the invention invented herein. This application is intended to cover any variations, uses or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art that are not invented by the present invention. The specification and examples are intended to be exemplary only, and the true scope and spirit of the invention are indicated by the claims.

[0062] The above specific implementation methods further illustrate the purpose, technical solutions and beneficial effects of the present application in detail. It should be understood that the above are only specific implementation methods of the present application and are not used to limit the protection scope of the present application. Any modifications, equivalent substitutions, improvements, etc. made on the basis of the technical solutions of the present application should be included in the protection scope of the present application.

Claims

1. A vehicle marking and information dissemination method for a double-deck super-large bridge vehicle-road cooperative system, characterized in that: The execution entities are roadside facilities, including: Identify the vehicle's license plate and obtain the vehicle's level mark; Collect traffic-related information of the double-deck bridge; Add specific identification to traffic related information and encapsulate to obtain data frame; Parse the data frame to obtain the applicable object and transmission direction.

2. The vehicle marking and information transmission method of the vehicle-road cooperative system of a double-deck super-large bridge according to claim 1 is characterized in that: Generate early warning information based on traffic-related information of the double-deck super-large bridge; Based on the urgency level of the warning information, the weight of the warning information and the response time of the past warning information, the warning information is sorted using a quick sort or heap sort algorithm; According to the sorting, the relevant warning information will be sent to the vehicles at the corresponding level in turn.

3. A vehicle marking and information dissemination method for a double-deck super-large bridge vehicle-road cooperative system, characterized in that: include: Before a vehicle enters the double-deck bridge, the camera in the roadside facilities is used to identify the vehicle's license plate and obtain the vehicle's level mark; The vehicle's level mark is transmitted to the on-board intelligent terminal of the corresponding vehicle.

4. The vehicle marking and information transmission method of the vehicle-road cooperative system of a double-deck super-large bridge according to claim 2 is characterized in that: Use the roadside facilities of the double-deck super-large bridge to collect traffic-related information; Add specific identification to traffic related information and encapsulate to obtain data frame; The vehicle's on-board unit OBU or roadside facilities are used to parse the data frame to obtain the applicable object and transmission direction.

5. The vehicle marking and information transmission method of the vehicle-road cooperative system of a double-deck super-large bridge according to claim 4 is characterized in that: Add specific identifiers to traffic-related information and encapsulate the obtained data frame, including: Add "A_INFO" mark to the frame header of the traffic-related information collected from vehicles traveling on the upper deck of the double-deck super-large bridge; The "A_INFO" identifier, source address, destination address, and traffic related information are encapsulated to obtain a data frame.

6. The vehicle marking and information transmission method of the vehicle-road cooperative system of a double-deck super-large bridge according to claim 4 is characterized in that: Add specific identifiers to traffic-related information and encapsulate the obtained data frame, including: Add "B_INFO" mark to the frame header of the traffic-related information collected from vehicles traveling on the upper deck of the double-deck super-large bridge; The "B_INFO" identifier, source address, destination address, and traffic related information are encapsulated to obtain a data frame.

7. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the program, the steps of the method according to any one of claims 1 to 6 are implemented.

8. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 6 are implemented.

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