Vehicle-mounted information priority inter-cut method, vehicle-mounted terminal, system and computer readable storage medium based on adjustable geofence and state autonomous recovery

Abstract

The invention relates to the technical field of vehicle-mounted information distribution and control in the Internet of Vehicles, intelligent traffic and the Internet of Things, in particular to a vehicle-mounted information priority inter-cut method, a vehicle-mounted terminal, a system and a computer readable storage medium based on an adjustable geofence and state autonomous recovery. The method runs in a vehicle-mounted terminal network which takes playing of main task content as a default state, and comprises the following steps: a service platform receives an inter-cut request containing a priority identifier; generating a geo-fence based on the request and related data and determining a target vehicle set; issuing instructions and contents; the vehicle-mounted terminal forcibly interrupts the main task, and plays the priority information content after locally storing the playing progress snapshot; and after playing, the terminal automatically recovers the main task from the snapshot. The technical contradiction that the vehicle-mounted media network is difficult to give consideration to high-priority event response, auxiliary service provision and main task process continuity is systematically solved through two core mechanisms of adjustable geo-fence accurate matching and terminal decentralization autonomous recovery.

Description

Technical Field

[0001] This invention relates to the field of vehicle information distribution and control technology in the Internet of Vehicles, intelligent transportation and the Internet of Things, specifically to a method, system and terminal for achieving precise targeted broadcast control of high-priority information based on adjustable geofencing in a distributed vehicle intelligent media network, and for achieving autonomous recovery of the playback process without network dependence through local playback progress snapshots. Background Technology

[0002] With the development of vehicle networking technology, in-vehicle screens have become an important digital medium, but existing information broadcasting and control solutions have systemic shortcomings: The first type of solution (such as CN120319140A) usually pushes content based on fixed electronic fences. Its design relies heavily on preset static logic, which has limitations in terms of forced interruption and dynamic priority arbitration required to deal with sudden public events, and may affect the reliability and timeliness of key information reaching the target vehicle. The second type of solution (such as CN113115064A) usually provides scenario-based services (such as scenic spot voice introductions) to single users based on location triggering. Its technical focus is on content matching of single terminals, lacking system-level coordination and forced broadcasting and control capabilities. Therefore, it is difficult to apply to in-vehicle equipment networks with continuous playback of main task content as the core. Specifically, it cannot simultaneously achieve: (1) intelligent triggering that takes into account driving safety; (2) lossless preservation and accurate recovery of the main task status; (3) efficient collaborative management of massive terminals.

[0003] Therefore, there is an urgent need for a technical solution that can systematically solve the following problems: 1) Determine or generate geofences based on relevant data to achieve accurate and adaptive information delivery; 2) Ensure the continuity of the main task through localized state saving and autonomous recovery of the terminal; 3) Intelligently adapt the information presentation method according to the real-time state of the terminal to balance service and security. Summary of the Invention

[0004] The technical problem this invention aims to solve is to provide a systematic solution that can simultaneously take into account the efficiency of event response, the provision of auxiliary services and the continuity of the main task, in order to address the problems of delayed response, inaccurate reach and difficulty in providing auxiliary services without interfering with the operation of the main task in existing in-vehicle media systems when dealing with sudden or unplanned events.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: The first technical solution adopted in this invention is as follows: A method for prioritizing in-vehicle information insertion based on adjustable geofencing and autonomous state recovery is applied to a system including a service platform and multiple in-vehicle terminals, wherein the default operating state of the in-vehicle terminals is to play the main task content. The method includes the following steps: Step S1: The service platform receives an insertion request from the certified service interface. The request includes at least priority information content, target range parameters, and priority identifier. Step S2: The service platform verifies the legitimacy of the request, and determines or generates a geofence and identifies the target vehicle set based on the target range parameters and related data. Step S3: The service platform sends the priority information content and the broadcast control command containing the priority identifier to the vehicle terminals in the target vehicle set. Step S4: In response to the broadcast control command, the vehicle terminal interrupts the currently playing main task content, and generates a playback progress snapshot containing the unique identifier of the interrupted content and the interruption time point and stores it in the local non-volatile memory, and then plays the priority information content. Step S5: When the priority information content finishes playing, or when the preset playback duration is reached according to the playback control instruction, or when termination conditions such as leaving the geofence are triggered, the vehicle terminal does not rely on subsequent instructions from the service platform, but autonomously reads the playback progress snapshot from the local storage and resumes the playback of the main task content from the interruption point.

[0006] A further implementation scheme is that, in step S2, determining or generating a geofence based on relevant data specifically includes: when the target range parameter is associated with a fixed location, dynamically adjusting the radius of the warning geofence around the fixed location based on at least one of real-time acquired environmental visibility data and average traffic speed.

[0007] A further technical solution is that the step S2 of determining or generating a geofence based on relevant data specifically includes: when the target range parameter is associated with a moving target, calculating and generating a dynamic geographic area that moves with the moving target based on the real-time location, speed and direction data of the moving target.

[0008] A further technical solution is that, before the "vehicle terminal responds to the broadcast control command" in step S4, a priority arbitration step is also included: the vehicle terminal compares the received priority identifier with the priority identifier of the currently playing content, and only executes the subsequent interruption and broadcast control operation when the received priority is higher.

[0009] A further technical solution is that, in step S4, the playback progress snapshot also includes the position information of the interrupted content in the playback sequence; in step S4, when playing the priority information content, the vehicle terminal also controls the screen to present a preset visual warning effect according to the priority identifier or information type; in step S4, when playing the priority information content, its information presentation method is determined according to the event type to which the priority information content belongs or the priority identifier.

[0010] A further technical solution is that, in step S4, when playing the priority information content, the information presentation method is also adapted according to the vehicle's current safety control level. The safety control level is determined in real time by the vehicle terminal based on multi-source sensor data, including multiple discrete safety states, such as safe stationary, restricted low speed, and display prohibited.

[0011] A further technical solution is that the adaptation method includes: when the security broadcast control level is "display prohibited", the adaptation is to output the priority information content only through voice broadcast; when the security broadcast control level is "restricted low speed", the adaptation is to output the priority information content through a combination of simplified visual information and synchronized voice broadcast; when the security broadcast control level is "safe still", the adaptation is to output the priority information content through full-screen or large-image visual information display.

[0012] The second technical solution adopted in this invention is as follows: A vehicle-mounted terminal, used to implement a vehicle-mounted information priority insertion method based on adjustable geofencing and autonomous state recovery as described in the first technical solution, includes a memory, a processor, a communication module, a display screen, an audio output module, and a sensor module. The memory stores a computer program, which, when executed by the processor, is used for: Manage and play the main task content stream; Receive and process broadcast control instructions and priority information from the service platform; Execute priority arbitration, interrupt main task content, generate playback progress snapshots and store them locally; Control the playback of priority information content; When local conditions are met, it will automatically trigger and complete the precise restoration and playback of the interrupted main task content.

[0013] The third technical solution adopted in this invention is as follows: A vehicle-mounted information priority insertion system based on adjustable geofencing and autonomous state recovery includes: multiple vehicle-mounted terminals as in the second technical solution; and a service platform communicatively connected to the vehicle-mounted terminals, used to execute the steps performed by the service platform in the method of the first technical solution.

[0014] The fourth technical solution adopted in this invention is, A computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the method described in the first technical solution.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. By using geofencing and a priority arbitration mechanism, high-priority information can be accurately targeted and delivered, improving the timeliness and reliability of event response; 2. By using local playback progress snapshots and an autonomous recovery mechanism, the continuity and integrity of the main task playback process are ensured, reducing the dependence on network real-time performance; 3. Through the security broadcast control level adaptation mechanism, intelligent matching between information presentation methods and driving safety status is achieved, balancing service provision and security assurance; 4. The above mechanisms work together to form a complete closed-loop system from event triggering, information distribution, state saving to playback recovery, which is suitable for multi-scenario applications ranging from emergency warnings to commercial services. Attached Figure Description

[0016] Figure 1 This is a flowchart summarizing the invention.

[0017] Figure 2 This is a schematic diagram of the system architecture provided for an embodiment of the present invention.

[0018] Figure 3 The flowchart below shows the overall process of the vehicle information priority insertion and recovery method provided in the embodiments of the present invention.

[0019] Figure 4 This is a schematic diagram of the dynamic fence generation and vehicle screening logic in an urban typhoon warning scenario according to Embodiment 1 of the present invention.

[0020] Figure 5 This is a schematic diagram illustrating the dynamic warning zone generation and following in the emergency vehicle cooperative yielding scenario of Embodiment 2 of the present invention.

[0021] Figure 6 This is a schematic diagram of the adjustable layered geofencing and hierarchical broadcast control logic for static hazard warning on highways in Embodiment 3 of the present invention.

[0022] Figure 7 This is a schematic diagram of the state-aware intelligent service switching logic in Embodiment 4 of the present invention. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the invention.

[0024] The priority insertion and recovery method of this invention operates on the vehicle-mounted terminal. After determining the priority information content to be played through priority arbitration, the playback execution method can be adapted according to the vehicle's current security control level; the security control level is provided by the terminal's underlying security control mechanism based on real-time output of multi-source sensor data. Thus, while achieving high-priority service access, driving safety and compliance are ensured.

[0025] In this invention, the term "geofence" refers to a geographical boundary defined for the purpose of information broadcast control. The scope or location of the geofence can be adjusted based on changes in relevant data, including but not limited to real-time data (such as the location and speed of moving targets, or visibility and traffic speed at fixed points), as well as historical data and regular data used for preset or periodic updates. This is what this application refers to as an "adjustable geofence." The term "playback sequence" refers to a list or queue of multiple content units (such as audio / video files, streaming media clips, and text / image pages) played sequentially or according to a plan by the in-vehicle terminal. The "position information in the playback sequence" saved in the playback progress snapshot is used to uniquely determine the logical position of the interrupted content unit within the sequence, facilitating accurate recovery.

[0026] In this invention, the safety control level is determined in real time by the vehicle terminal based on multi-source sensor data. It represents different safety states of the vehicle, including but not limited to: safe stationary (which can also correspond to FULL state), restricted low speed (which can also correspond to LIMITED state), and display prohibited (which can also correspond to SAFE state), etc. This safety control level can be generated by the vehicle's built-in state perception and logic determination unit, and its specific implementation is not limited by this application.

[0027] Example 1: City-level natural disaster early warning (typhoon warning) This example demonstrates a standardized process for the system to handle high-priority events across a large, static geographical area. See also... Figure 3 and Figure 4 The specific steps include: S101, the service platform receives a "Typhoon Red Warning" insertion request from the Municipal Emergency Management Bureau via the government security API. The request is structured data, including: warning text, image, and video content, administrative division code covering the specified area, and a priority identifier preset to "highest (level 1)".

[0028] S102, the service platform verifies the legitimacy of the digital certificate attached to the request.

[0029] S103, after successful verification, the service platform parses the administrative division code and generates a static basic geofence covering the target area.

[0030] S104, the service platform invokes a real-time gridded active matching algorithm: the map is divided into several grids, and a grid is activated only when there is an online vehicle terminal within that grid. The system combines the location information reported in real time by all online vehicle terminals, dynamically calculates and matches it with the active grids, thereby determining the "target vehicle set A" located within the target range in real time.

[0031] S105. Simultaneously, the service platform accesses typhoon path prediction data provided by the meteorological department and generates a "high-risk adjustable fence B" with an adjustable radius, centered on the predicted path of the typhoon eye. This fence moves with the predicted path.

[0032] S106, the service platform continuously marks vehicles whose real-time location falls within the "high-risk adjustable fence B" as "high-risk area vehicle subset B1".

[0033] S107, the service platform sends typhoon warning content and broadcast control instructions to all vehicle terminals in "target vehicle set A", and the instructions include a "Level 1" priority identifier. For "high-risk area vehicle subset B1", an enhanced warning mark is added to the instructions.

[0034] S108 After receiving the instruction, the vehicle terminal's internal arbitration module compares the received "Level 1" priority identifier with the default priority of the currently playing content.

[0035] S109, due to higher receiving priority, the arbitration passed, and the vehicle terminal immediately interrupted the playback of the current content.

[0036] S110, simultaneously with the interruption, the vehicle terminal control module generates a playback progress snapshot. This snapshot is a structured data file containing: a unique identifier of the interrupted content, its position in the playback sequence, and the interruption time accurate to milliseconds. This file is then saved to local non-volatile memory. The saving of the playback progress snapshot employs reliable storage mechanisms such as atomic writes to prevent snapshot corruption due to system anomalies during storage, ensuring the reliability of the recovery process.

[0037] S111, after arbitration is passed and a playback progress snapshot is generated, the vehicle terminal first determines the information presentation method (such as full-screen video) that requires a high level of alertness based on the priority identifier ('highest (level 1)'). Then, it queries the current safety control level (i.e., one of the various discrete states mentioned above) and performs safety adaptation to the determined presentation method according to this level: If the safety control level is Limited, the control screen displays only concise warning text in the safe area and simultaneously broadcasts voice messages (S111-A). If the safety control level is Full, the display buffer is cleared, the typhoon warning video content is played in full screen, and the screen can be driven to display specific visual warning effects (S111-B). If the safety control level is SAFE, screen output is blocked, and only voice messages are broadcast (S111-C).

[0038] S112: After the warning video content has been played once (or for a preset duration), the playback control module of the vehicle terminal automatically triggers the recovery process. This process does not depend on any new instructions from the waiting service platform.

[0039] S113, the control module reads the previously saved playback progress snapshot file from the local storage.

[0040] S114, parse the snapshot file, obtain the identifier and interruption time of the interrupted content, and request the corresponding content file from the local content management module.

[0041] S115 resumes playback of the content from the parsed interruption point, achieving precise and seamless continuation of playback.

[0042] S116, After playback resumes, the vehicle terminal sends a status synchronization message to the service platform via the communication module.

[0043] Example 2: Emergency vehicle traffic coordination (coordinating to give way to rescue vehicles) This embodiment demonstrates the system's ability to provide real-time, dynamic, and precise following services to moving targets. See also Figure 3 and Figure 5 The specific steps include: S201, when the authorized dispatch system dispatches an emergency vehicle, it initiates a "cooperative yielding" request to the service platform through a security interface and authorizes the service platform to obtain the dynamic data stream of the emergency vehicle in real time.

[0044] S202, the service platform receives the request and begins to receive real-time location, speed and heading data of the emergency vehicle.

[0045] S203, the service platform uses the real-time location of the emergency vehicle as a reference point and dynamically calculates a sector-shaped warning zone ahead of its direction of travel based on the real-time speed v and the real-time road congestion index c, using the algorithm D = v * t + c * k. Here, t is the preset reaction time, and k is the congestion impact coefficient. The location and extent of this sector-shaped warning zone change in real time as the emergency vehicle moves.

[0046] S204, the service platform continuously and dynamically determines all vehicles with installed vehicle terminals, whose real-time locations fall within the aforementioned dynamic sector warning zone, and whose driving direction is roughly the same as that of emergency vehicles, as the "target vehicle set".

[0047] S205, the service platform generates a yielding prompt message and marks it as a "high security level" priority, and sends it to the dynamic target vehicle set.

[0048] S206. After receiving the instruction, the on-board terminal of the target vehicle, after passing priority arbitration, first determines the presentation method that should be obvious but not affect driving safety (such as a banner prompt) based on the priority identifier. Then, it obtains its current security control level (i.e., one of the multiple discrete states mentioned above).

[0049] S207, if the security control level is limited, the control screen will only display concise text prompts in the safe area (such as the top banner), and will also broadcast voice messages through the speech synthesis module.

[0050] S208 If the security control level is Safe Static (FULL), then execute the standard interruption procedure (same as S109-S110), save the current content playback progress snapshot, and then display the yielding prompt information in full screen or large image.

[0051] S209 If the security control level is SAFE (Display Disabled), then only voice announcements should be made.

[0052] S210, regardless of the display mode, provides a pass-through prompt for a fixed duration or until the vehicle leaves the dynamic fence.

[0053] S211, after the prompt ends, the vehicle terminal automatically triggers the recovery process (same as S112-S115) to restore the original content playback.

[0054] S212, when an emergency vehicle passes through the section of road or the mission ends, the dispatch system sends a termination command, and the service platform stops updating the dynamic fence and screening vehicles.

[0055] Example 3: Static Hazard Warning on Highways (Landslides, Accidents) This embodiment demonstrates the system's ability to classify and dynamically warn of fixed hazards in high-speed scenarios. See also... Figure 3 and Figure 6 The specific steps include: S301, the authorized command center reports a "road hazard ahead" event to the service platform through a dedicated interface, requesting: precise coordinates of the hazard point and the event level.

[0056] S302, after the service platform verifies the request and confirms the level, it generates a multi-layered adjustable early warning geofence centered on the coordinates of the danger point, including a core area and an outer early warning area. The radius of the outer early warning area is set as a dynamic parameter.

[0057] S303, the service platform accesses real-time weather visibility data and average vehicle speed data for this road segment. Based on preset rules (such as at night or in low visibility conditions), the system automatically and dynamically adjusts the radius of the outer warning zone to a larger value.

[0058] S304, the service platform continuously filters out vehicles that are heading towards a danger point and whose real-time location is within the outer warning zone, as the "target vehicle set".

[0059] S305, the service platform issues a graded early warning instruction to the target vehicle group.

[0060] S306. After receiving the instruction, the on-board terminal of the target vehicle, through priority arbitration, first determines the required tiered warning presentation method based on the event level (e.g., high-level events require detailed text and images). Then, it queries the current security control level (i.e., one of the various discrete states mentioned above) and performs security adaptation of the presentation method accordingly. A) If the current security control level is Safe Static (FULL), then after executing the standard interruption and snapshot saving process (same as S109-S110), the warning information will be displayed in full screen.

[0061] B) If the current security control level is limited, after executing the standard interruption and snapshot saving process (same as S109-S110), an icon or text will be displayed in the preset security area on the screen and a voice warning will be given.

[0062] C) If the current security control level is SAFE (Safety Forbidden), the adaptation is to output the priority information content only through voice warnings.

[0063] S307, After the warning information is played, the terminal automatically restores the original content (same as S112-S115).

[0064] Once the command center confirms that the danger has been eliminated, it sends a release command to the service platform, which then issues a recovery prompt to the relevant vehicles.

[0065] Example 4: Smart Cultural Tourism Services in Commercial Advertising Networks This embodiment demonstrates the innovative application of the core mechanism of this invention in non-urgent, high-frequency scenarios, aiming to solve the technical problem of "how to seamlessly overlay contextualized services on devices where the main task is continuously running." See also Figure 3 and Figure 7 The specific steps include: S401, in the default mode of the service platform, all in-vehicle terminals loop the main task content. The platform has a pre-set additional "contextualized service information layer".

[0066] S402: When a vehicle approaches a service trigger point (POI) within a preset range (e.g., 500 meters), the platform only marks it and does not send any content.

[0067] S403, the vehicle terminal's security broadcast control core runs continuously, dynamically determining and updating the vehicle's real-time security broadcast control level (i.e., one of the various discrete states mentioned above) based on multi-source sensor data.

[0068] S404 When the security control level is switched to Safe Stationary (FULL) and the vehicle is located within the POI fence, the local terminal determines that both conditions are met.

[0069] S405, the vehicle terminal autonomously triggers the priority insertion process of the present invention: interrupt the current main task content, generate and save the playback progress snapshot (same as S110).

[0070] S406, the terminal determines, based on the event type of the contextualized service content, that a rich visual display method is required. Since the current security control level is FULL, it adapts to displaying the contextualized service content of the POI via full-screen or large-image visual information display, either locally cached or quickly retrieved from the platform. The contextualized service content can be pre-stored in the local cache or quickly retrieved from the platform as needed.

[0071] S407, once the contextualized content has finished playing, or the sensor detects that the vehicle has resumed driving, the terminal immediately resumes the main task content playback autonomously based on the local snapshot (same as S112-S115), ensuring the continuity of the main task process.

[0072] S408, the platform generates and stores an anonymous "service reach record", which includes a de-identified device identifier, POI identifier, reach time and interaction duration. This record is stored in isolation from the main task log.

[0073] S409, the service platform's data processing center has the function of aggregating, statistically analyzing, and performing analysis on massive anonymous service access records, and can form specific service analysis views based on such data.

[0074] The above embodiments demonstrate that the technical solution of the present invention has high flexibility and universality, and can support a wide range of scenarios from high-priority event response to daily contextualized services, providing a solid technical implementation path for building an intelligent mobile service system.

[0075] Although the invention has been described herein with reference to several illustrative embodiments, it should be understood that those skilled in the art can devise many other modifications and implementations that will fall within the scope and spirit of the principles disclosed herein.

Claims

1. A method for vehicle information priority insertion based on adjustable geofencing and state autonomous recovery, applied to a system comprising a service platform and a plurality of vehicle terminals, characterized in that, The default running state of the vehicle terminal is playing main task content, and the method comprises the following steps: Step S1, the service platform receives an interjection request from an authenticated service interface, and the request comprises at least priority information content, target range parameters and priority identification; Step S2, the service platform verifies the legality of the request, determines or generates a geofence based on the target range parameters and related data, the range or location of the geofence can be adjusted based on data changes, and determines a target vehicle set; Step S3, the service platform sends the priority information content and the play control instruction containing the priority identification to the vehicle terminal in the target vehicle set; Step S4, the vehicle terminal interrupts the currently played main task content in response to the play control instruction, generates a play progress snapshot containing the unique identification of the interrupted content and the interruption time point at the time of interruption and stores it in the local non-volatile memory, and then plays the priority information content; Step S5, when the priority information content is played to completion or a termination condition is reached according to the play control instruction, the vehicle terminal reads the play progress snapshot from the local memory and automatically resumes playing the main task content, and the termination condition includes a preset playing time length and triggering leaving the geofence.

2. The method of claim 1, wherein, In step S2, based on the related data, the geofence is determined or generated, which specifically comprises: when the target range parameters are associated with a moving target, a dynamic geographic area moving with the moving target is calculated and generated according to the real-time position, speed and direction data of the moving target.

3. The method of claim 1, wherein, In step S2, based on the related data, the geofence is determined or generated, which specifically comprises: when the target range parameters are associated with a fixed location, at least one of the real-time environment visibility data and the average traffic speed is used to dynamically adjust the warning geofence radius around the fixed location.

4. The method of claim 1, wherein, In step S2, the "related data" includes at least one of real-time traffic flow data, environment perception data, historical same period data and moving target trajectory data.

5. The method of claim 1, wherein, In step S4, before the vehicle terminal responds to the play control instruction, a priority arbitration step is further included: the vehicle terminal compares the received priority identification with the priority identification of the currently played content, and only when the received priority is higher, the subsequent interruption and play control operation is performed.

6. The method of claim 1, wherein, In step S4, the play progress snapshot further includes position information of the interrupted content in the play sequence; in step S4, when playing the priority information content, the vehicle terminal further controls the screen to present a preset visual warning effect according to the priority identification or information type; in step S4, when playing the priority information content, the information presentation mode is determined according to the event type to which the priority information content belongs or the priority identification.

7. The method of claim 6, wherein, In step S4, when playing the priority information content, the information presentation mode is further adapted according to the current safety play control level of the vehicle, and the safety play control level is determined by the vehicle terminal based on multi-source sensor data in real time.

8. The method of claim 7, wherein, The adaptation mode comprises: adapting the presentation mode of outputting the priority information content according to the safety play control level.

9. A vehicle terminal, characterized by A terminal for implementing the method of any one of claims 1-8, comprising a memory, a processor, a communication module, a display screen, an audio output module, and a sensor module, wherein the memory stores a computer program which, when executed by the processor, is configured to: manage and play a main task content stream; receive and process a control instruction and priority information content from a service platform; perform priority arbitration, main task content interruption, play progress snapshot generation and local storage; control the playing of the priority information content; autonomously trigger and complete the accurate resumption of the interrupted main task content when local conditions are met.

10. A vehicle-mounted information priority insertion system based on an adjustable geofence and state autonomous recovery, characterized in that, The terminal comprises: a plurality of vehicle-mounted terminals according to claim 9; a service platform in communication connection with the vehicle-mounted terminals, configured to perform the steps performed by the service platform in the method of any one of claims 1-8.

11. A computer readable storage medium having stored thereon a computer program, characterized in that, The program is executed by the processor to implement the method of any one of claims 1-8.

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