Traffic information processing method and system based on vehicle-road cooperation

Abstract

The invention provides a traffic information processing method and system based on vehicle-road cooperation, and relates to the technical field of vehicle-road cooperation. According to the scheme, the terminal equipment sends the traffic event query request to the travel service edge platform based on the travel route, and the travel service edge platform queries the currently sent traffic event set on the travel route from the travel service center platform based on the traffic event query request sent by the terminal equipment; the method comprises the following steps of: receiving a travel route, and returning event information of each traffic event in a traffic event set currently sent on the travel route to terminal equipment, namely finely matching the traffic event set by utilizing a travel service edge platform, and sinking calculation with large concurrency and high time delay requirement to the travel service edge platform to reduce service time delay; and the terminal equipment displays the traffic events in the traffic event set on the map of the travel route in an overlapping manner according to the event information of the traffic events in the traffic event set based on the received travel route, so that a user is helped to avoid a road section where a relatively serious traffic accident occurs, and a driving decision is assisted.

Description

Technical Field

[0001] The present application relates to the field of vehicle-road collaboration technology, and specifically, to a traffic information processing method and system based on vehicle-road collaboration. Background Art

[0002] With the acceleration of urbanization and the increase in transportation demand, traffic congestion has also become a problem for the public's daily travel. Therefore, obtaining real-time road condition information through traffic information services to avoid traffic congestion and choose the right travel time and method is an effective way to improve travel efficiency.

[0003] In related technologies, in a vehicle-road cooperative traffic environment, users usually plan their travel routes through navigation map software. The navigation map software then collects the average speed data of other vehicles on the route, and based on the average speed data, determines whether there is congestion in the multiple road sections involved in the route, and visually marks the congestion conditions of each road section with different colors, so that users can obtain real-time traffic information on the travel route.

[0004] However, with the above solution, users can only learn whether the route is unobstructed, but cannot obtain more reference information, which affects user experience. Summary of the Invention

[0005] The purpose of the present invention is to provide a traffic information processing method and system based on vehicle-road collaboration to address the deficiencies in the above-mentioned prior art, so as to solve the technical problems existing in the related art.

[0006] To achieve the above objectives, the technical solutions adopted in the embodiments of the present application are as follows: In a first aspect, an embodiment of the present application provides a traffic information processing method based on vehicle-road collaboration, which is applied to a traffic information processing system based on vehicle-road collaboration. The traffic information processing system based on vehicle-road collaboration includes: a terminal device, multiple travel service edge platforms, and a travel service center platform, wherein each of the travel service edge platforms is deployed at a network edge node in a different geographical area; the method includes: The terminal device sends a traffic event query request to the first travel service edge platform according to the pre-planned travel route, wherein the traffic event query request includes: the travel route, the traffic event query request is used to instruct to obtain at least one traffic event currently occurring on the travel route, and the travel service center platform assigns the first travel service edge platform to the terminal device based on the current location of the vehicle bound to the terminal device; The first travel service edge platform determines, based on the traffic event query request, a set of areas through which the travel route passes, and based on the set of areas, queries the travel service center platform for a total set of traffic events currently occurring in all areas of the set of areas, and filters out a traffic event set of the travel route based on the travel route and the total set of traffic events, obtains event information of each traffic event in the traffic event set of the travel route, and returns the event information of the traffic event set of each traffic event in the travel route to the terminal device, wherein the event information includes: an affected road section, an event type, an event severity, and whether a risk factor is being resolved; The terminal device receives event information of each traffic event in the traffic event set of the travel route, and overlays and displays each traffic event in the traffic event set on a map of the travel route.

[0007] In a second aspect, an embodiment of the present application further provides a traffic information processing system based on vehicle-road collaboration, the traffic information processing system based on vehicle-road collaboration comprising: a terminal device, multiple travel service edge platforms, a travel service center platform, a traffic event analysis platform, multiple traffic event analysis edge platforms, and a roadside sensing device; The traffic information processing system based on vehicle-road collaboration is used to execute the steps of any one of the methods provided in the first aspect above.

[0008] The beneficial effects of this application are: The embodiment of the present application provides a traffic information processing method and system based on vehicle-road collaboration. In this solution, the terminal device plans an optimal travel route for the user based on the departure and destination input by the user, and sends a traffic event query request to the travel service edge platform based on the travel route, wherein the travel service edge platform is allocated to the terminal device by the travel service center platform based on the current location of the vehicle bound to the terminal device; in this way, the nearest travel service edge platform can be allocated to the terminal device based on the current location of the vehicle to provide travel services, so as to share the access pressure of the travel service center platform and reduce service latency; the travel service edge platform queries the traffic event set currently sent on the travel route from the travel service center platform based on the traffic event query request sent by the terminal device, and returns the event information of each traffic event in the traffic event set currently sent on the travel route to the terminal device, that is, the traffic event set is allocated to the terminal device by the travel service edge platform. Computing with precise matching, large concurrency and high latency requirements is moved down to the travel service edge platform, and the travel service edge platform is deployed in the edge data center or access room of the communication operator to provide users with service nodes closer to the base station, greatly reducing service latency; the terminal device receives the event information of each traffic event in the traffic event set based on the travel route, and overlays and displays each traffic event in the traffic event set on the map of the travel route. In this way, the user can understand which sections of the travel route have experienced traffic accidents based on the traffic events displayed on the map of the travel route, which can help the user avoid sections where more serious traffic accidents have occurred, so as to improve travel efficiency and optimize user experience. That is, the user can dynamically grasp the severity of each traffic event, traffic control measures and risk mitigation progress based on the event information of each traffic event received, thereby assisting driving decision-making, realizing vehicle-road collaborative communication, and improving vehicle traffic efficiency and safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0010] Figure 1 A schematic diagram of the structure of a traffic information processing system based on vehicle-road collaboration provided in an embodiment of the present application; Figure 2 A flow chart of a traffic information processing method based on vehicle-road collaboration provided in an embodiment of the present application; Figure 3 A schematic diagram of a set of areas passed through on a travel route provided in an embodiment of the present application; Figure 4 A schematic diagram of a set of traffic events occurring in each area on a travel route provided in an embodiment of the present application; Figure 5 A flowchart of another method for processing traffic information based on vehicle-road collaboration provided in an embodiment of the present application; Figure 6 A flowchart of another method for processing traffic information based on vehicle-road collaboration provided in an embodiment of the present application; Figure 7 A flowchart of another method for processing traffic information based on vehicle-road collaboration provided in an embodiment of the present application; Figure 8 A flowchart of another method for processing traffic information based on vehicle-road collaboration provided in an embodiment of the present application; Figure 9 A flowchart of another method for processing traffic information based on vehicle-road collaboration provided in an embodiment of the present application; Figure 10 A flowchart of another method for processing traffic information based on vehicle-road collaboration provided in an embodiment of the present application; Figure 11 This is a schematic diagram of the fusion of traffic event 1 and traffic event 2; Figure 12 An interactive diagram for pre-processing detected traffic events provided by this application; Figure 13 An interactive diagram of the traffic incident analysis center platform provided in this application for updating and summarizing traffic incidents; Figure 14 Interactive schematic diagram of the same traffic event scope fusion provided for this application; Figure 15 This is an interactive diagram of the processing of event hold timer timeout provided by this application; Figure 16 Interaction diagram for allocating travel service edge platforms to travel app users provided by this application; Figure 17 A flow chart of querying a set of traffic events based on travel routes provided by this application; Figure 18 A schematic diagram of the coordinates of entering / exiting the traffic event range on the travel route; Figure 19 A schematic diagram of the process for generating and sharing real-time video links of traffic incidents provided for this application; Figure 20 A schematic diagram of the structure of a traffic information processing device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0011] Before introducing this application, the background technology involved in this application is first introduced.

[0012] In related technologies, the following two methods are generally used to push traffic information on the user's travel route to the driver, as follows: The first method is that users plan their travel routes through navigation map software installed on smart terminals (such as mobile phones, vehicle-mounted units, tablets, etc.). The navigation map software can determine whether there is congestion on the road sections involved in the travel route based on the average speed of other vehicles on the route, and mark the degree of congestion of the road sections with different colors.

[0013] The second method is to use roadside sensing equipment to detect traffic incidents on all road sections, and broadcast the traffic incidents on all road sections to the surrounding intelligent connected vehicles equipped with on-board units (OBU) through the road-side unit (RSU). The OBU determines whether the vehicle is within the impact range of the traffic incident. If so, it will issue an early warning by emitting a prompt sound, displaying a warning picture, etc.

[0014] However, these two approaches have the following drawbacks. With the first approach, users can only see whether their route is clear, but cannot determine the cause, severity, or center of the congestion, nor can they visually see whether the factors causing the congestion are being resolved. With the second approach, users only receive warning notifications once they are within the impact zone of a traffic incident, meaning they cannot identify the risk factors along that route during route planning. Consequently, with the second approach, users also cannot visually see the severity of the traffic incident or whether the risk factors are being resolved.

[0015] In response to the above method, this application proposes a traffic information processing method based on vehicle-road collaboration. When the user plans the route before traveling, and when driving according to the planned route, all traffic accidents and accident-affected sections of the travel route can be viewed in real time. If the area where the traffic accident occurred happens to be within the perception range of the camera built on the roadside, the user can also view the real-time video to intuitively see the severity of the traffic incident, whether the risk factors are being eliminated, etc. That is, the user can dynamically grasp the severity of each traffic incident, traffic control measures and risk resolution progress based on the event information received, thereby assisting driving decisions.

[0016] Optionally, refer to Figure 1As shown, this is a structural diagram of a traffic information processing system based on vehicle-road collaboration provided in an embodiment of the present application. The traffic information processing system based on vehicle-road collaboration includes: terminal equipment, multiple travel service edge platforms, a travel service center platform, a traffic event analysis platform, multiple traffic event analysis edge platforms and roadside sensing equipment.

[0017] Among them, multiple travel service edge platforms and travel service center platforms are deployed on the travel service platform, and the traffic event analysis platform and multiple traffic event analysis edge platforms are deployed on the traffic event analysis equipment.

[0018] For example, the terminal device may be an electronic device having data processing and display functions, such as a smart phone or an in-vehicle unit.

[0019] Among them, a travel application is installed on the terminal device. The travel application can plan an optimal travel route for the user based on the departure and destination input by the user, and send a traffic event query request to the travel service edge platform based on the travel route. Among them, the travel service edge platform is allocated to the terminal device by the travel service center platform based on the current location of the vehicle bound to the terminal device. For example, when the current location of the vehicle leaves the service range of the travel service edge platform, the travel service center platform reallocates a new travel service edge platform to the terminal device. In this way, the nearest travel service edge platform can be allocated to the terminal device according to the current location of the vehicle to provide travel services, so as to share the access pressure of the travel service center platform and reduce service latency.

[0020] Each travel service edge platform is deployed at network edge nodes in different geographical areas, such as edge data centers or access rooms of telecommunications operators, to provide terminal devices with service nodes closer to base stations and offer ultra-low latency services. Its main functions include: fine-grained matching of traffic event sets and generation of event-related video stream links. Specifically, based on the traffic event query request sent by the terminal device, the travel service edge platform queries the traffic event set currently sent on the travel route from the travel service center platform, and returns the event information of each traffic event in the traffic event set currently sent on the travel route to the terminal device.

[0021] The terminal device collects the event information of each traffic event in the traffic event set based on the received travel route, and overlays and displays each traffic event in the traffic event set on the map of the travel route. In this way, the user can understand which sections of the travel route have experienced traffic accidents based on the traffic events displayed on the map of the travel route, which can help the user avoid sections where more serious traffic accidents have occurred, thereby improving travel efficiency and optimizing user experience.

[0022] Therefore, in the traffic information solution provided by this application, the travel application installed on the terminal device not only provides users with intelligent route planning, real-time traffic navigation and other functions, but also supports real-time display of which sections of the travel route have traffic accidents, helping users to choose routes before traveling and change to better routes when driving along the planned route, avoiding sections where serious traffic accidents have occurred, dynamically adjusting travel routes, and optimizing travel efficiency.

[0023] Optionally, continue to refer to Figure 1 As shown, roadside sensing equipment is distributed in areas with frequent traffic accidents, and includes but is not limited to a combination of multiple devices such as cameras, millimeter-wave radars, lidars, and meteorological detection equipment. It is used to sense traffic participants, count traffic flow, monitor weather conditions / water depth, detect abnormal vehicles, etc., and push the sensed information to traffic event analysis equipment.

[0024] Continue to refer Figure 1 As shown, the traffic information processing system 100 based on vehicle-road collaboration also includes floating vehicles. These vehicles, typically buses and taxis, are equipped with onboard Global Positioning System (GPS) tracking devices. These vehicles collect real-time information such as vehicle position, speed, and heading angle during driving and transmit it to traffic event analysis equipment. Some more intelligent vehicles can also detect road hazards such as potholes, waterlogging, and spilled objects.

[0025] Optionally, continue to refer to Figure 1 As shown, the traffic information processing system 100 based on vehicle-road collaboration also includes a video management platform. The video management platform is used to connect video surveillance devices (e.g., cameras) distributed across different locations, centrally manage the devices and share resources, thereby enabling functions such as video monitoring, video analysis, video storage, and video forwarding.

[0026] The following will illustrate the traffic information processing method based on vehicle-road collaboration provided by this application and the corresponding beneficial effects through multiple embodiments.

[0027] Optionally, refer to Figure 2 As shown, Figure 2 A flow chart of a traffic information processing method based on vehicle-road collaboration provided in an embodiment of the present application includes: S201. The terminal device sends a traffic event query request to the first travel service edge platform according to the pre-planned travel route.

[0028] The traffic event query request includes: a travel route, and the traffic event query request is used to instruct to obtain at least one traffic event currently occurring on the travel route, and the travel service center platform allocates the first travel service edge platform to the terminal device based on the current location of the vehicle bound to the terminal device. For example, the service scope of the first travel service edge platform is Figure 3 The area shown in 3.

[0029] For example, refer to Figure 3 As shown, the terminal device plans a travel route based on the starting point and end point input by the user, and sends a traffic event query request to the first travel service edge platform based on the travel route to obtain at least one traffic event currently sent on the travel route.

[0030] S202. The first travel service edge platform determines the set of areas that the travel route passes through according to the traffic event query request, and based on the area set, queries the total set of traffic events currently occurring in all areas in the area set from the travel service center platform, and filters out the traffic event set of the travel route according to the travel route and the total set of traffic events, obtains the event information of each traffic event in the traffic event set of the travel route, and returns the event information of the traffic event set of each traffic event in the travel route to the terminal device.

[0031] Incident information includes: affected road sections, incident type, incident severity, and whether risk factors are being resolved. The affected road sections are the sections of the route where the incident caused congestion.

[0032] For example, the event type may be: road congestion, road construction, etc., the event severity includes: general, serious or relatively serious, and whether the risk factor is being resolved includes: resolved, being resolved or to be resolved.

[0033] In one achievable method, after receiving the traffic event query request, the first travel service edge platform matches the travel route with multiple preset areas, such as matching the travel route with area 1, area 2, area 3 and area 4, to obtain the area set Set that the travel route passes through. region , among which, continue to refer to Figure 3 As shown, the area set Set that the travel route passes through region Includes: Area 3, Area 4 and Area 2.

[0034] Then, the first travel service edge platform queries the region set Set from the travel service center platform according to the identifier of each region in the region set passed by the travel route region The total set of traffic events currently occurring in all areas in Set traffic1 , as referenced Figure 4As shown, the area set Set that the travel route passes through is queried region The total set of traffic incidents in all areas Set traffic1 Traffic event 1, traffic event 2 and traffic event 3; according to the travel route, from the total set of traffic events Set traffic1 Filter out the traffic event set Set of the travel route traffic2 , such as the traffic event set Set of the travel route traffic2 Traffic events 2 and 3 are detected, and event information for each traffic event is obtained, such as the affected road section, event type, event severity, and whether the risk factor is being resolved. This information is then returned to the terminal device. In other words, the first travel service edge platform can accurately filter the set of traffic events that occurred along the travel route based on the area IDs of all the areas the travel route passes through.

[0035] Therefore, in this application, the travel service edge platform is used to share the access pressure of the travel service center platform and reduce service latency, and the calculations of fine matching of traffic event sets, large concurrency and high latency requirements are moved to the travel service edge platform. The travel service edge platform is deployed in the edge data center or access room of the communication operator to provide users with service nodes closer to the base station, greatly reducing service latency.

[0036] S203: The terminal device receives event information of each traffic event in the traffic event set of the travel route, and overlays and displays each traffic event in the traffic event set on a map of the travel route.

[0037] In one possible implementation, the terminal device receives a set of traffic events Set of the travel route. traffic2 After receiving the event information of each traffic event, the event information of each traffic event is superimposed on the travel route based on the map. The event information includes: the affected road section, the type of event, the severity of the event, and whether the risk factors are being eliminated. In this way, users can dynamically grasp the severity of each traffic event, traffic control measures and the progress of risk resolution based on the event information received, thereby assisting driving decisions.

[0038] Optionally, a traffic event display indicator can be determined based on the type of traffic event, the severity of the event, and whether the risk factor is being resolved; the traffic event display indicator can be superimposed on a map of the road section affected by the traffic event. The severity of the traffic event can be marked with different colors.

[0039] In summary, an embodiment of the present application provides a method for processing traffic information based on vehicle-road collaboration. In this solution, the terminal device plans an optimal travel route for the user based on the departure and destination input by the user, and sends a traffic event query request to the travel service edge platform based on the travel route, wherein the travel service edge platform is allocated to the terminal device by the travel service center platform based on the current location of the vehicle bound to the terminal device; in this way, the nearest travel service edge platform can be allocated to the terminal device according to the current location of the vehicle to provide travel services, so as to share the access pressure of the travel service center platform and reduce service latency; the travel service edge platform queries the traffic event set currently sent on the travel route from the travel service center platform based on the traffic event query request sent by the terminal device, and returns the event information of each traffic event in the traffic event set currently sent on the travel route to the terminal device, that is, the traffic event is sent to the terminal device by the travel service edge platform. The calculations with fine matching, large concurrency and high latency requirements are sunk to the travel service edge platform, and the travel service edge platform is deployed in the edge data center or access room of the communication operator to provide users with service nodes closer to the base station, greatly reducing service latency; the terminal device collects the event information of each traffic event in the traffic event set based on the received travel route, and overlays and displays each traffic event in the traffic event set on the map of the travel route. In this way, the user can understand which sections of the travel route have experienced traffic accidents based on the traffic events displayed on the map of the travel route, which can help the user avoid sections where more serious traffic accidents have occurred, so as to improve travel efficiency and optimize user experience. That is, the user can dynamically grasp the severity of each traffic event, traffic control measures and risk mitigation progress based on the event information of each traffic event received, thereby assisting driving decision-making, realizing vehicle-road collaborative communication, and improving vehicle traffic efficiency and safety.

[0040] Optionally, refer to Figure 5 As shown, the event information of the traffic event also includes: an associated video flag; the method also includes: S501. The terminal device responds to the playback operation of the current traffic event, generates a video acquisition request, and sends the video acquisition request to the first travel service edge platform.

[0041] The video acquisition request is used to instruct acquisition of video data of the current traffic event, and the event information of the current traffic event includes an associated video flag.

[0042] In one feasible method, the event information of traffic event 2 also includes: an associated video flag. If the associated video flag is 1, it means that the video data associated with traffic event 2 can be obtained. The terminal device responds to the user's playback operation of traffic event 2, generates a video acquisition request, and sends the video acquisition request to the first travel service edge platform, wherein the video acquisition request includes: the identifier of traffic event 2, so as to obtain the video data of traffic event 2 from the travel service center platform through the first travel service edge platform.

[0043] S502. The first travel service edge platform sends a video acquisition request to the travel service center platform.

[0044] The video acquisition request includes: an identifier of the current traffic event. For example, the identifier of the current traffic event may be a number of the current traffic event, such as the number of traffic event 2 is 2.

[0045] S503. The travel service center platform obtains the video data corresponding to the current traffic event according to the identifier of the current traffic event, and returns the video data corresponding to the current traffic event to the first travel service edge platform.

[0046] In one feasible approach, to reduce storage pressure on the first travel service edge platform, the video data of all traffic events can be stored in the travel service center platform or video management platform. For example, the first travel service edge platform sends a video acquisition request to the travel service center platform. The travel service center platform obtains the video data corresponding to traffic event 2 based on the identifier of traffic event 2 and returns the video data corresponding to traffic event 2 to the first travel service edge platform. The video data corresponding to traffic event 2 can be a video stream link.

[0047] Therefore, this application proposes that the travel service edge platform can be used to share the access pressure of the travel service center platform and reduce service latency, and the number of users can also be expanded.

[0048] S504. The first travel service edge platform forwards the video data corresponding to the current traffic event to the terminal device.

[0049] S505: The terminal device plays the video data corresponding to the current traffic event.

[0050] In one possible implementation, the first travel service edge platform forwards the video stream link corresponding to traffic event 2 to the terminal device. The terminal device then plays the video stream corresponding to traffic event 2 based on the received video stream link. This allows users to click to play real-time videos associated with each traffic event, helping them choose a route before traveling and change to a more optimal route while traveling along the planned route, avoiding sections of road where serious traffic accidents have occurred, thereby improving travel efficiency and optimizing the user experience.

[0051] Optionally, in this application, users can not only obtain the affected road sections and severity of each traffic incident on the travel route, but if the area where the traffic accident occurred happens to be within the perception range of the camera built on the roadside, they can also click to play the real-time video associated with the traffic incident, so that they can more intuitively see the severity of the traffic incident, whether the risk factors are being eliminated, etc.

[0052] Optionally, the event information of each traffic event includes: event number (global ID), event type, severity level, entry / exit point coordinates, whether it is capable of being associated with a video flag, the codes and video stream channel numbers of all cameras that can capture the traffic event. Among them, the range entry / exit point coordinates are the coordinates of the intersection of the travel route and the traffic event range. The travel service edge platform sends all the information except the camera code and video stream channel number to the terminal device. The terminal device receives the traffic event set Set traffic2 Finally, the information of each traffic event is superimposed on the travel route based on the map, including: the road section affected by the traffic event, the type of event, and if it is possible to associate a video, the associated video play button will be displayed, and the severity of the traffic event can be marked with different colors.

[0053] Optionally, refer to Figure 6 As shown, the above step S503 includes: S601. According to the identifier of the current traffic event, obtain the video stream link, camera identifier and video stream channel number corresponding to the current traffic event, and determine whether the video stream link is valid.

[0054] S602: If yes, reset the timer corresponding to the video stream link, and use the video stream link as the video data corresponding to the current traffic event.

[0055] In one feasible method, the travel service center platform obtains the video stream link, camera identifier and video stream channel number corresponding to traffic event 2 based on the identifier of traffic event 2, and determines whether the video stream link is valid. If so, it can be determined that traffic event 2 has been bound to a valid real-time video stream link. At this time, the travel service center platform resets the timer corresponding to traffic event 2, and returns the video stream link corresponding to traffic event 2 to the terminal device through the first travel service edge platform for playback.

[0056] S603: If not, use the camera ID and the video stream channel number as the video data corresponding to the current traffic event.

[0057] In another possible implementation, if the video stream link corresponding to Traffic Event 2 is determined to be invalid, this indicates that Traffic Event 2 is not bound to a valid real-time video stream link. Therefore, the travel service center platform sends the camera ID and video stream channel number corresponding to Traffic Event 2 as the video data corresponding to Traffic Event 2 to the first travel service edge platform.

[0058] Optionally, the above step S504 includes: If the video data corresponding to the current traffic event is a video stream link corresponding to the current traffic event, the video stream link corresponding to the current traffic event is forwarded to the terminal device.

[0059] In this embodiment, if the video data corresponding to traffic event 2 received by the first travel service edge platform is a video stream link, the first travel service edge platform returns the video stream link to the terminal device, and the terminal device plays the video stream of traffic event 2.

[0060] Optionally, refer to Figure 7 As shown, the above step S504 includes: S701: If the video data corresponding to the current traffic event is the camera identifier and video stream channel number corresponding to the current traffic event, obtain the video stream link corresponding to the current traffic event according to the camera identifier and video stream channel number.

[0061] S702: Determine, based on the camera identifier, whether there are multiple cameras corresponding to the current traffic event.

[0062] S703. If so, determine that the video stream link corresponding to the current traffic event is multiple real-time video stream links, and splice the video streams in the multiple real-time video stream links according to the multiple camera identifiers corresponding to the current traffic event, and send the video stream link of the spliced ​​video stream to the terminal device.

[0063] In another feasible method, if the video data corresponding to traffic event 2 received by the first travel service edge platform is the camera identifier and video stream channel number corresponding to traffic event 3, the first travel service edge platform sends a video stream link request to the video management platform based on the camera identifier and video stream channel number corresponding to traffic event 3, and receives the video stream link returned by the video management platform; at the same time, according to the camera identifier, it is determined whether the number of cameras corresponding to traffic event 1 is multiple. If it is multiple, it is determined that the video stream link returned by the video management platform is multiple real-time video streams. The first travel service edge platform also needs to splice the multiple real-time video streams according to the camera identifiers, synthesize one real-time video stream, generate a synthesized video stream link, and send the synthesized video stream link to the terminal device for playback.

[0064] Optionally, the first travel service edge platform sends the finally generated video stream link to the terminal device for playback; at the same time, the first travel service edge platform sends a video stream binding message to the travel service center platform, requesting that the finally generated video stream link be bound to traffic event 2.

[0065] The travel service center platform binds the video stream link to traffic event 2 and starts a real-time video stream timer for the video stream. Before the video stream binding timer times out, if other terminal devices also have the need to play the video data corresponding to traffic event 2, they can directly use the video stream link to play it. If the timer times out, it means that no other terminal device has requested to play the video stream during this period, and traffic event 2 is unbound from the video stream link. Unbinding the video stream link does not affect the terminal device that is playing the video, but when all terminal devices stop playing, the video management platform will release the video resources and the video stream link will become invalid.

[0066] Therefore, in this application, to conserve video resources, a real-time video stream link is generated only when a terminal device user requests to play a video of a traffic event. If a traffic event is already associated with a valid real-time video stream link, multiple terminal devices across the travel service edge platform can share and play the same video stream link. If all terminal devices stop playing the video stream, the video resources are released. Therefore, the solution proposed in this application has the advantages of dynamic allocation and sharing of video resources.

[0067] Optionally, refer to Figure 8 As shown, the method further includes: S801. The terminal device obtains the new current position of the vehicle, generates a new travel route based on the new current position of the vehicle, and sends a new traffic event query request to the first travel service edge platform.

[0068] In one possible implementation, if a user changes their travel route, meaning the vehicle's initial location has changed, the terminal device acquires the vehicle's new current location, generates a new travel route based on the vehicle's new current location, and sends a new traffic event query request to the first travel service edge platform. The first travel service edge platform is assigned to the terminal device by the travel service center platform based on the vehicle's initial location.

[0069] S802. The first travel service edge platform determines whether the new current location exceeds the geographical area where the first travel service edge platform is deployed. If so, it sends a switching request to the travel service center platform.

[0070] In one feasible approach, the first travel service edge platform needs to first determine whether the new current location exceeds the geographical area where the first travel service edge platform is deployed. If so, it is determined that the vehicle has left the service range of the first travel service edge platform and a new travel service edge platform needs to be reassigned to the terminal device.

[0071] Specifically, if the following three conditions are met at the same time, the travel service edge platform initiates a handover request to the travel service center platform: a. The vehicle's new current location is not within the service range of the first travel service edge platform; b. The remaining length of the trip exceeds the switching threshold (e.g., 2 kilometers); c. The service resource usage of the first travel service edge platform exceeds the threshold.

[0072] S803. The travel service center platform determines to allocate the second travel service edge platform to the terminal device based on the switching request, generates a switching response, and returns the switching response to the terminal device via the first travel service edge platform.

[0073] Optionally, when the travel service center platform receives a switching request sent by the first edge platform, it reallocates the travel service edge platform according to the new current location of the vehicle, such as the reallocated travel service edge platform is the second travel service edge platform, generates a switching response, and returns the switching response to the terminal device.

[0074] S804. The terminal device sends a connection request to the second travel service edge platform based on the switching response. If a connection response is received from the second travel service edge platform, the terminal device determines to establish a connection with the second travel service edge platform and sends a connection release request to the first travel service edge platform to disconnect the connection with the first travel service edge platform.

[0075] Optionally, the terminal device establishes a connection with the newly assigned travel service edge (such as the second travel service edge platform) based on the received switching response, and disconnects from the travel service edge platform (the first travel service edge platform) that originally provided the service.

[0076] S805. The terminal device sends a new traffic event query request to the second travel service edge platform.

[0077] S806. The second travel service edge platform determines the traffic event set currently occurring on the new travel route based on the new traffic event query request, and returns the event information of each traffic event in the traffic event set of the new travel route to the terminal device.

[0078] In one possible implementation, a terminal device sends a new traffic event query request to the second travel service edge platform. Based on the new traffic event query request, the second travel service edge platform determines the set of traffic events currently occurring on the new travel route and returns the event information for each traffic event in the set to the terminal device. This means that the second travel service edge platform closest to the terminal device provides services to the terminal device. This provides users with a service node closer to the base station, significantly reducing service latency.

[0079] Optionally, in order to reduce the switching frequency of the travel service edge platform, the original travel service edge platform may not initiate a switching request if one of the following conditions is met: a. The distance between the vehicle and the trip destination is less than the switching threshold (e.g., 2 kilometers); b. The service resources of the original travel service edge platform are highly idle and lower than the switching threshold.

[0080] Optionally, when a travel application installed on a terminal device is launched, it first connects to the travel service center platform and sends a login request to the travel service center platform, including the vehicle's current location. After completing user authentication, the travel service center platform assigns the nearest travel service edge platform (such as the first travel service edge platform) based on the vehicle's current location to provide travel services. Each travel service edge platform is deployed in a communications operator's edge data center or access room, providing users with a service node closer to the base station and offering ultra-low latency services. Its primary functions include: fine-grained matching of traffic event sets and generation of event-related video stream links.

[0081] Optionally, continue to refer to Figure 1 As shown, the traffic information processing system also includes: multiple traffic event analysis edge platforms and traffic event analysis platforms, wherein each traffic event analysis edge platform is deployed at different important traffic intersections. Figure 9 As shown, the method further includes: S901. Each traffic event analysis edge platform obtains traffic status information from the area where each traffic event analysis edge platform is located, performs traffic event detection on the traffic status information in the area where each traffic event analysis edge platform is located, obtains at least one traffic event, and reports at least one traffic event to the traffic event analysis platform.

[0082] In one feasible approach, the traffic event analysis edge platform conducts traffic event detection based on the road traffic condition information collected in its area, such as detecting traffic events that affect driver driving safety and efficiency (such as congestion, potholes, construction, bad weather, traffic accidents, etc.), and obtains event information such as the event scope, event type, event source, and event identifier of each traffic event, and reports the event information of each traffic event to the traffic event analysis platform.

[0083] S902. The traffic event analysis platform integrates the traffic events reported by all traffic event analysis edge platforms to obtain a set of traffic events currently occurring in all areas, and sends the set of traffic events currently occurring in all areas to the travel service center platform.

[0084] Optionally, the traffic event analysis center platform summarizes all traffic events reported by each traffic event analysis edge platform and merges the event ranges of the same traffic event to obtain a set of traffic events currently occurring in all areas, and sends the set of traffic events currently occurring in all areas to the travel service center platform. The travel service center platform then divides the map into several areas according to administrative divisions or other preset principles, updates and saves the set of traffic events currently occurring in all areas reported by the traffic event analysis center platform by area, and determines the camera code and video stream channel number associated with each traffic event based on the overlapping area between the event range of each traffic event in the currently occurring traffic event set and the perception range of each roadside camera.

[0085] Optionally, refer to Figure 10 As shown, the above step S902 includes: S1001. The traffic event analysis platform determines whether a traffic event already exists based on the event type and event source of the traffic event.

[0086] In one feasible approach, each traffic event analysis edge platform reports the detected traffic event set to the traffic event analysis center platform at a frequency of 1 Hz. The traffic event analysis edge platform assigns a locally unique traffic event ID to different traffic events, and the same traffic event ID should remain unchanged during the duration of the event.

[0087] The traffic event analysis center platform receives traffic events reported by each traffic event analysis edge platform, and combines the traffic event type and event source (traffic event analysis edge platform ID + local unique traffic event ID) to determine whether the traffic event source already exists. If there is a traffic event with the same event type and containing the event source (traffic event analysis edge platform ID + local unique traffic event ID), it is determined that the traffic event already exists.

[0088] S1002: If it exists and it is determined that the event scope of the traffic event has changed, then the event scope of the traffic event is updated, and it is determined whether the traffic event is merged with other traffic events.

[0089] Optionally, if the traffic event analysis center platform determines that the event source of traffic event 1 already exists, it further determines whether the event scope of traffic event 1 is consistent with the previously reported one. If not, the event scope of traffic event 1 is updated and the event holding timer corresponding to the event source is reset. If they are consistent, only the event holding timer corresponding to the event source is reset. At the same time, it is also necessary to determine whether traffic event 1 is re-integrated with other traffic events.

[0090] Optionally, if the event source of traffic event 1 does not exist and is not a new source of an existing traffic event, a new traffic event is created, a globally unique traffic event ID is assigned, the event source of the traffic event is recorded, and the event holding timer corresponding to the event source is started (preferably set to 30s), and then the travel service center platform is notified through a traffic event reporting message that a new traffic event has been detected.

[0091] S1003. If not, the updated information of the traffic event is sent to the travel service center platform, where the updated information includes: the new event scope of the traffic event; the travel service center platform updates the area and camera associated with the traffic event based on the updated information of the traffic event. If it is determined that the camera associated with the traffic event has changed and has been bound to a real-time video link, the real-time video link associated with the traffic event is unbound.

[0092] In one feasible method, if the event type of traffic event 1 is different from the event types of other traffic events, and the event range of traffic event 1 does not overlap with the event ranges of other traffic events, then it is determined that traffic event 1 is not integrated with other traffic events, and update information of traffic event 1 is sent to the travel service center platform. The update information includes: the new event range of traffic event 1, that is, the travel service center platform is notified through an event update message that the event range of traffic event 1 has changed; after receiving the update information, the travel service center platform updates the area and camera associated with traffic event 1 according to the new event range. If the associated camera has changed and has been bound to a real-time video link, the real-time video stream link associated with traffic event 1 is unbound. Among them, unbinding the video stream link does not affect the terminal device that is playing the video, but when the terminal devices stop playing, the video management platform will release the video resources and the video stream link will become invalid.

[0093] S1004. If merged, then based on the event type of the traffic event and the new event scope, select at least one merged traffic event from other traffic events except the traffic event, and merge the event scope of each merged traffic event with the event scope of the traffic event to obtain the merged event scope of the traffic event, delete each merged traffic event, and send an event deletion request to the travel service center platform. The event deletion request is used to instruct the deletion of each merged traffic event.

[0094] S1005. The travel service center platform deletes each integrated traffic event according to the event deletion request.

[0095] In another possible implementation, reference Figure 11 As shown, if the event type of traffic event 1 is the same as the event type of traffic event 2, and there is an overlapping area between the event range of traffic event 1 and the event range of traffic event 2, that is, multiple traffic event analysis edge platforms detect the same type of traffic events, and there is an overlapping area between the event ranges, that is, traffic event 1 and traffic event 2 can be fused, or traffic event 2 can be regarded as a fused traffic event; then, the event range of traffic event 2 is fused with the event range of traffic event 1 to obtain the fused event range of the traffic events, and traffic event 2 is deleted, and an event deletion request is sent to the travel service center platform. The event deletion request is used to indicate the deletion of traffic event 2; the travel service center platform deletes traffic event 2 according to the event deletion request.

[0096] Optionally, the traffic incident analysis center platform merges multiple traffic incidents into one incident and fuses the incident range, which can be an irregular polygon. If the incident range of a traffic incident changes, the associated camera information should change accordingly.

[0097] It should be noted that in this application, if multiple traffic events are merged into one event, the traffic event analysis center platform should record each source of the traffic event (traffic event analysis edge platform ID + local unique traffic event ID) and set event retention timers for each. If one of the event retention timers times out, the corresponding event source (traffic event analysis edge platform ID + local unique traffic event ID) is deleted, and the traffic event scope is adjusted to delete the event scope corresponding to the event source. If the same traffic event scope is merged, first, the event sources of the merged traffic events need to be merged and the merged traffic events need to be deleted; second, the travel service center platform needs to be notified to update the areas, cameras, and video stream links associated with the traffic events.

[0098] Optionally, refer to Figure 12 FIG. 1 is an interactive diagram of pre-processing a detected traffic event provided by the present application, and the method includes: Step 1: The traffic event analysis center platform updates and summarizes the traffic event information from each traffic event analysis edge platform.

[0099] Step 2: The traffic incident analysis center platform integrates the scope of the same traffic incidents and sends the aggregated and integrated traffic incidents to the travel service center platform.

[0100] Step 3: The travel service center platform divides the map into several areas based on administrative divisions or other preset principles, and updates and saves traffic events detected by the traffic event analysis equipment by area.

[0101] Step 4: The travel service center platform determines the camera code and video stream channel number associated with the traffic event based on the overlapping area between the scope of the traffic event and the perception range of each roadside camera.

[0102] Optionally, refer to Figure 13 As shown in FIG, a schematic diagram of the interaction of the traffic incident analysis center platform provided by this application for updating and summarizing traffic incidents is provided. The method includes: Step 1: Receive traffic events reported by the traffic event analysis edge platform.

[0103] Step 2: Determine whether the event source of the traffic incident exists. If so, jump to step 3; if not, jump to step 4.

[0104] Step 3: If yes, determine whether the event scope of the traffic event has changed. If yes, update the event scope of the traffic event; if no, reset the event holding timer; Step 4: If not, and it is determined to be a new source of an existing traffic event, then add the event source of the traffic event; if it is not a new source of an existing traffic event, then create a new traffic event.

[0105] Optionally, refer to Figure 14 FIG. 1 is an interactive diagram of the same traffic event range fusion provided by this application. The method includes: Step 1: The traffic event analysis edge platform reports the detected traffic event set to the traffic event analysis center platform at a frequency of 1 Hz.

[0106] Step 2: The traffic event analysis center platform searches for recorded traffic events based on the traffic event type and event source (traffic event analysis edge platform ID + local unique traffic event ID). If there is no traffic event with the same event type and the event source (traffic event analysis edge platform ID + local unique traffic event ID), it is determined that the source of the traffic event has not been recorded before.

[0107] Step 3: The traffic incident analysis center platform further determines whether there are traffic incidents of the same type and overlapping scope as the traffic incident.

[0108] (1) If it does not exist, a new traffic event is created, the source is added to the event source list, and the corresponding event holding timer is started. Then, a traffic event report message is sent to notify the travel service center platform that a new traffic event has been detected. The travel service center platform determines the area where the event occurred and the associated camera based on the event range.

[0109] (2) If it exists, add the newly detected event source to the source list of existing traffic events and start the corresponding event holding timer. Then, update the event scope based on the multiple source traffic fusion of the event. Then further determine whether it needs to be fused with other traffic events.

[0110] If further integration is not required, the travel service center platform is notified of the change in the event scope via a traffic event update message. Upon receiving this information, the travel service center platform updates the area and camera associated with the traffic event based on the new event scope. If the associated camera has changed and is already bound to a real-time video link, the real-time video stream link associated with the event is unbound. Unbinding the video stream link does not affect devices currently playing video. However, once all devices stop playing, the video management platform releases the video resources and the video stream link becomes invalid.

[0111] If further fusion is required, select the traffic events to be retained, add all sources of the fused events to their event source list, and merge the event ranges. Delete the fused traffic events and notify the travel service center platform to delete them simultaneously. Then, notify the travel service center platform of the changes to the retained traffic event range through a traffic event update message. Upon receiving this, the travel service center platform updates the area and camera associated with the traffic event based on the new event range. If the associated camera has changed and is already bound to a real-time video link, unbind the real-time video stream link associated with the event. Unbinding the video stream link does not affect the terminal device currently playing the video. However, when all terminal devices stop playing, the video management platform releases the video resources and the video stream link becomes invalid.

[0112] Optionally, refer to Figure 15 As shown in FIG, an interactive diagram of processing of event holding timer timeout provided by the present application, the method includes: Step 1: When the traffic event analysis center platform detects that the event holding timer of a traffic event has timed out, it first determines whether the associated event source is the only source of the event.

[0113] Step 2: If this is the only source of the event, delete the traffic event and notify the travel service center platform to delete the traffic event simultaneously.

[0114] Step 3: If it is not the only source of the event, delete the event source from the event source list, update the scope of the traffic event, and notify the travel service center platform of the change in the event scope through a traffic event update message. After receiving the message, the travel service center platform updates the area and camera associated with the traffic event according to the new event scope. If the associated camera has changed and has been bound to a real-time video link, unbind the real-time video stream link associated with the event. Unbinding the video stream link does not affect travel app users who are playing the video, but when all travel app users stop playing, the video management platform will release the video resources and the video stream link will become invalid.

[0115] Optionally, refer to Figure 16 As shown in FIG, this is an interactive diagram of allocating a travel service edge platform to a travel APP user provided by this application. The method includes: Step 1: When the travel app is started, it first connects to the travel service center platform and sends a login platform request with the current location.

[0116] Step 2: After completing user authentication, the travel service center platform allocates the nearest edge platform based on the user's current location to provide travel services.

[0117] Among them, the travel service edge platform is deployed in the edge data center or access room of the communication operator to provide users with service nodes closer to the base station and provide ultra-low latency services. Its main functions include: fine matching of traffic event sets and generation of event-related video stream links.

[0118] Step 3: When the user plans the route before traveling, after the user selects the route, the travel app establishes a connection with the assigned travel service edge platform, reports the travel route, and queries the traffic event set on the travel route.

[0119] Step 4: When the travel app turns on the navigation function, it periodically obtains the user's current location, adjusts the starting point of the travel route to update the travel route, and sends a traffic event set query instruction carrying the latest travel route information to the travel service edge platform assigned to it.

[0120] Step 5: If the travel APP user drives out of the service range of the originally assigned travel service edge platform, the originally assigned travel service edge platform initiates a service platform switching request to the travel service center platform. The travel service center platform re-assigns a new travel service edge platform to the APP user and notifies the travel APP.

[0121] Step 6: The travel app establishes a connection with the newly assigned travel service edge platform and disconnects from the travel service edge platform that originally provided the service.

[0122] Step 7: After the switch is completed, the travel APP sends a traffic event set query instruction carrying the latest travel route information to the newly assigned travel service edge platform.

[0123] Optionally, refer to Figure 17 FIG. 1 is a flow chart of querying a traffic event set based on a travel route provided by this application. The method includes: Step 1: Match the area set Set that the travel route passes through region ; Step 2: Query the traffic event set Set in each area according to the area number traffic1 ; Step 3: Accurately filter the traffic event set Set that occurs on the travel route traffic2 ; Step 4: Determine the coordinates of the entry / exit areas of the traffic event on the travel route.

[0124] Among them, reference Figure 18 The figure shows a schematic diagram of the coordinates of entering / exiting the traffic event range on the travel route. Figure 18 ] shows the entry point coordinates and exit point coordinates of the travel route at traffic event 2. The same traffic event may have multiple sets of entry / exit point coordinates.

[0125] Step 5: The travel app displays traffic event information based on the map.

[0126] Optionally, refer to Figure 19 FIG. 1 is a flow chart of generating and sharing a real-time video link of a traffic incident provided by this application. The method includes: Step 1: The terminal device sends a video stream link acquisition instruction carrying the global ID of the traffic event to the travel service edge platform.

[0127] Among them, if a traffic event on the travel route has the ability to be associated with a video, the user clicks the video play button, and the travel APP sends a video stream link acquisition instruction carrying the global ID of the traffic event to the travel service edge platform.

[0128] Step 2: The travel service edge platform requests the video information associated with the traffic event from the travel service center platform.

[0129] (1) If the traffic event has been bound to a valid real-time video stream link, the travel service center platform resets the timer corresponding to the video stream and returns the video stream link to the travel APP through the travel service edge platform for playback.

[0130] (2) If the traffic event is not bound to a valid real-time video stream link, the travel service center platform sends the camera code and video stream channel number associated with the traffic event to the travel service edge platform, which may be multiple cameras.

[0131] The travel service edge platform then requests a video stream link from the video management platform based on the camera code and video stream channel number. If the traffic event is associated with multiple cameras, the video management platform will return multiple video stream links. The travel service edge platform will then need to stitch these multiple video channels together into a single real-time video stream and generate a link for the combined video stream.

[0132] The travel service edge platform sends the final generated video stream link to the APP for playback; at the same time, it sends a video stream binding message to the travel service center platform, requesting that the final generated video stream link be bound to the traffic event.

[0133] The travel service center platform binds the video stream link to the traffic event and starts a real-time video stream timer for the video stream. Before the video stream binding timer times out, if other APP users also have the need to play the event video, they can directly use the video stream link to play it. If the timer times out, it means that no other travel APP user has requested to play the video stream during this period, and the traffic event will be unbound from the video stream link. Unbinding the video stream link does not affect the travel APP users who are playing the video, but when all travel APP users stop playing, the video management platform will release the video resources and the video stream link will become invalid.

[0134] Figure 20 This is a schematic diagram of the structure of a traffic information processing device based on vehicle-road collaboration provided in an embodiment of the present application, which includes: A sending module 2001 is configured to send, by the terminal device, a traffic event query request to a first travel service edge platform according to a pre-planned travel route, wherein the traffic event query request includes: the travel route, the traffic event query request is used to instruct to obtain at least one traffic event currently occurring on the travel route, and the travel service center platform assigns the first travel service edge platform to the terminal device based on the current location of the vehicle bound to the terminal device; A query module 2002 is configured to determine, by the first travel service edge platform, the set of areas through which the travel route passes according to the traffic event query request, and based on the set of areas, query the travel service center platform for the total set of traffic events currently occurring in all areas of the set of areas, and filter out the traffic event set of the travel route according to the travel route and the total set of traffic events, obtain event information of each traffic event in the traffic event set of the travel route, and return the event information of the traffic event set of each traffic event in the travel route to the terminal device, wherein the event information includes: the affected road section, the event type, the severity of the event, and whether the risk factor is being resolved; The display module 2003 is used for the terminal device to receive event information of each traffic event in the traffic event set of the travel route, and to overlay and display each traffic event in the traffic event set on a map of the travel route.

[0135] The above-mentioned device is used to execute the method provided in the above-mentioned embodiment. Its implementation principle and technical effect are similar and will not be repeated here.

[0136] Optionally, the present invention further provides a program product, such as a computer-readable storage medium, comprising a program, which is used to perform the above method embodiment when executed by a processor.

Claims

1. A traffic information processing method based on vehicle-road collaboration, characterized in that: Applied to a traffic information processing system based on vehicle-road collaboration, the traffic information processing system based on vehicle-road collaboration includes: a terminal device, multiple travel service edge platforms, and a travel service center platform, wherein each of the travel service edge platforms is deployed at a network edge node in a different geographical area; the method includes: The terminal device sends a traffic event query request to the first travel service edge platform according to the pre-planned travel route, wherein the traffic event query request includes: the travel route, the traffic event query request is used to instruct to obtain at least one traffic event currently occurring on the travel route, and the travel service center platform assigns the first travel service edge platform to the terminal device based on the current location of the vehicle bound to the terminal device; The first travel service edge platform determines, based on the traffic event query request, a set of areas through which the travel route passes, and based on the set of areas, queries the travel service center platform for a total set of traffic events currently occurring in all areas of the set of areas, and filters out a traffic event set of the travel route based on the travel route and the total set of traffic events, obtains event information of each traffic event in the traffic event set of the travel route, and returns the event information of the traffic event set of each traffic event in the travel route to the terminal device, wherein the event information includes: an affected road section, an event type, an event severity, and whether a risk factor is being resolved; The terminal device receives event information of each traffic event in the traffic event set of the travel route, and overlays and displays each traffic event in the traffic event set on a map of the travel route.

2. The method according to claim 1, characterized in that The event information of the traffic event also includes: an associated video flag; the method further includes: The terminal device generates a video acquisition request in response to a play operation on the current traffic event, and sends the video acquisition request to the first travel service edge platform, wherein the video acquisition request is used to instruct acquisition of video data of the current traffic event, and the event information of the current traffic event includes the associated video flag; The first travel service edge platform sends the video acquisition request to the travel service center platform, where the video acquisition request includes: an identifier of the current traffic event; The travel service center platform obtains video data corresponding to the current traffic event according to the identifier of the current traffic event, and returns the video data corresponding to the current traffic event to the first travel service edge platform; The first travel service edge platform forwards the video data corresponding to the current traffic event to the terminal device; The terminal device plays the video data corresponding to the current traffic event.

3. The method according to claim 2, characterized in that The travel service center platform obtains video data corresponding to the current traffic event according to the identifier of the current traffic event, including: According to the identifier of the current traffic event, obtain a video stream link, a camera identifier, and a video stream channel number corresponding to the current traffic event, and determine whether the video stream link is valid; If yes, reset the timer corresponding to the video stream link, and use the video stream link as the video data corresponding to the current traffic event; If not, the camera identifier and the video stream channel number are used as the video data corresponding to the current traffic event.

4. The method according to claim 3, characterized in that The first travel service edge platform forwards the video data corresponding to the current traffic event to the terminal device, including: If the video data corresponding to the current traffic event is the video stream link corresponding to the current traffic event, the video stream link corresponding to the current traffic event is forwarded to the terminal device.

5. The method according to claim 3, characterized in that The first travel service edge platform forwards the video data corresponding to the current traffic event to the terminal device, including: If the video data corresponding to the current traffic event is the camera identifier and the video stream channel number corresponding to the current traffic event, obtaining the video stream link corresponding to the current traffic event according to the camera identifier and the video stream channel number; Determining, according to the camera identifier, whether there are multiple cameras corresponding to the current traffic event; If so, it is determined that the video stream link corresponding to the current traffic event is a plurality of real-time video stream links, and according to the plurality of camera identifiers corresponding to the current traffic event, the video streams in the plurality of real-time video stream links are spliced, and the spliced ​​video data is sent to the terminal device.

6. The method according to claim 1, characterized in that The superimposed display of each traffic event in the traffic event set on the map of the travel route includes: determining a display indicator for the traffic event based on the event type, event severity, and whether risk factors of the traffic event are being resolved; The display mark of the traffic event is superimposed and displayed on the map of the road section affected by the traffic event.

7. The method according to claim 1, characterized in that The method further comprises: The terminal device obtains the new current location of the vehicle, generates a new travel route based on the new current location of the vehicle, and sends the new traffic event query request to the first travel service edge platform; The first travel service edge platform determines whether the new current location is outside the geographical area where the first travel service edge platform is deployed, and if so, sends a handover request to the travel service center platform; The travel service center platform determines, based on the handover request, to allocate a second travel service edge platform to the terminal device, generates a handover response, and returns the handover response to the terminal device via the first travel service edge platform; The terminal device sends a connection request to the second travel service edge platform according to the handover response. If a connection response is received from the second travel service edge platform, the terminal device determines to establish a connection with the second travel service edge platform and sends a connection release request to the first travel service edge platform to disconnect from the first travel service edge platform. The terminal device sends the new traffic event query request to the second travel service edge platform; The second travel service edge platform determines the traffic event set currently occurring on the new travel route based on the new traffic event query request, and returns event information of each traffic event in the traffic event set of the new travel route to the terminal device.

8. The method according to claim 1, characterized in that The traffic information processing system based on vehicle-road collaboration also includes: multiple traffic event analysis edge platforms and a traffic event analysis platform. The method also includes: Each of the traffic event analysis edge platforms obtains traffic status information from the area where each of the traffic event analysis edge platforms is located, performs traffic event detection on the traffic status information in the area where each of the traffic event analysis edge platforms is located, obtains at least one traffic event, and reports the at least one traffic event to the traffic event analysis platform; The traffic event analysis platform integrates the traffic events reported by all traffic event analysis edge platforms to obtain a set of traffic events currently occurring in all areas, and sends the set of traffic events currently occurring in all areas to the travel service center platform.

9. The method according to claim 8, characterized in that The traffic event analysis platform integrates traffic events reported by all traffic event analysis edge platforms to obtain a set of traffic events currently occurring in all regions, including: The traffic event analysis platform determines whether the traffic event already exists based on the event type and event source of the traffic event; If so, and it is determined that the event scope of the traffic event has changed, then the event scope of the traffic event is updated, and it is determined whether the traffic event is re-merged with other traffic events; If the traffic event is not integrated with other traffic events, then sending updated information of the traffic event to the travel service center platform, wherein the updated information includes: a new event range of the traffic event; the travel service center platform updates the area and camera associated with the traffic event based on the updated information of the traffic event, and if it is determined that the camera associated with the traffic event has changed and has been bound to a real-time video link, then unbinding the real-time video link associated with the traffic event; If the traffic event is merged with other traffic events, then based on the event type of the traffic event and the new event range, at least one fused traffic event is selected from other traffic events other than the traffic event, and the event range of each fused traffic event is merged with the event range of the traffic event to obtain a fused event range of the traffic event, and each fused traffic event is deleted, and an event deletion request is sent to the travel service center platform, wherein the event deletion request is used to instruct the deletion of each fused traffic event; The travel service center platform deletes each of the merged traffic events according to the event deletion request.

10. A traffic information processing system based on vehicle-road collaboration, characterized in that: The traffic information processing system based on vehicle-road collaboration includes: terminal equipment, multiple travel service edge platforms, a travel service center platform, a traffic event analysis platform, multiple traffic event analysis edge platforms and roadside sensing equipment; The traffic information processing system based on vehicle-road collaboration is used to execute the steps of the method described in any one of claims 1 to 9 above.

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