System and method for automatically correcting total mileage of automobile combination instrument
By working collaboratively with the TSP cloud platform and the instrument cluster, and utilizing various data transmission triggering mechanisms and scenario-based verification strategies, the problem of inaccurate total mileage data after instrument cluster replacement was solved. This achieved full-scenario data coverage, accurate verification, and multi-vehicle compatibility, while reducing implementation costs.
Patent Information
- Application Number
- CN202511778715.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-28
- Publication Date
- 2026-02-27
AI Technical Summary
Existing technology cannot automatically correct total mileage data after the instrument cluster is replaced, resulting in inaccurate data. Furthermore, the data transmission triggering mechanism is simplistic and the verification logic is crude, making it unable to cope with complex vehicle usage scenarios.
By employing the TSP cloud platform in conjunction with the instrument cluster, and through various data transmission triggering mechanisms and scenario-based dynamic verification strategies, the total mileage data is automatically corrected. This includes data backup and correction in scenarios such as vehicle power-off, power-on, and sudden power outages. Combined with VIN code matching to adjust the level trigger threshold, the accuracy and compatibility of the data are ensured.
It enables automatic correction of total mileage data after the instrument cluster is plugged in, unplugged, or replaced, ensuring data accuracy, adapting to multiple vehicle models, reducing costs, avoiding data loss and misjudgment, and meeting international regulatory requirements.
Smart Images
Figure CN121572801A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of vehicle-mounted telematics service platform (TSP) and combination instrument, and particularly relates to an automatic total mileage correction system and method for automobile combination instrument. BACKGROUND
[0002] The statements in this section merely provide background information related to the present application and do not necessarily constitute the prior art.
[0003] The automobile combination instrument, as an important component of a vehicle, records the total mileage data of the vehicle in the whole life cycle, which indirectly reflects the service life and wear state of each component of the vehicle, reminds the user to regularly maintain and repair the vehicle, and can also assist in the evaluation of the vehicle price when buying a second-hand vehicle. Therefore, international regulations clearly require that the total mileage data should not be lost, changed or tampered with in the whole life cycle of the vehicle. However, during the use of the vehicle, problems such as instrument software failure, hardware damage, plug-in replacement and the like are difficult to completely avoid, which can easily lead to abnormal total mileage data.
[0004] The existing scheme is implemented by writing with a special device or storing and backing up in other associated components of the vehicle, which has high cost, is cumbersome to operate and depends on manual intervention. Although a remote backup and correction scheme is currently proposed, the scheme is for the whole cycle automatic correction of the same combination instrument, which first realizes the backup of the mileage data in the remote cloud according to the permission backup flag of the combination instrument itself, and then updates the total mileage in the combination instrument according to the judgment of the cloud. However, if the combination instrument is replaced due to software or hardware damage, the default flag of the newly connected combination instrument is 0 (i.e. not allowed to backup), which cannot effectively trigger the backup and correction of the mileage, and the total mileage data recorded in the combination instrument is inaccurate. In addition, the existing scheme generally has the problems of single data transmission triggering mechanism, rough verification logic and insufficient fault tolerance, which cannot fully cope with complex vehicle use scenarios. SUMMARY
[0005] To solve the above problems of the prior art, the present application provides an automatic total mileage correction system and method for automobile combination instrument, which can automatically correct the total mileage data in the combination instrument after plugging in or replacing the combination instrument, ensure that the total mileage data recorded in the combination instrument is always accurate, and realize the automatic total mileage correction and update of the automobile combination instrument with full-scene data coverage, accurate verification, multi-model adaptation and controllable cost.
[0006] In a first aspect, the present application provides an automatic total mileage correction system for automobile combination instrument.
[0007] An automatic total mileage correction system for automobile combination instrument, comprising: The combination instrument is used for triggering real-time collection of total mileage data and data update request according to real-time state of the vehicle and preset data transmission and verification trigger mechanism, storing the total mileage data to local EEROM, and sending the total mileage data and update request to the vehicle local area network; The remote monitoring module is used for detecting the total mileage data and data update request in the vehicle local area network in real time and uploading to the TSP cloud platform, and buffering the data to be uploaded in an offline state; The TSP cloud platform is used for receiving and storing real-time total mileage data, responding to data update request according to a dynamic verification strategy of different scenes, and feeding back the stored total mileage data to the combination instrument to update the total mileage data stored in the local EEROM. The combination instrument transmits data with the remote monitoring module through the vehicle CAN bus, and the remote monitoring module communicates with the TSP cloud platform through the mobile network with the GPS / 4G antenna.
[0008] Further technical solutions, the preset data transmission trigger mechanism is: When the vehicle is detected to be powered off, the combination instrument stores the collected total mileage data to the local EEROM and sends it to the vehicle local area network; Periodically detect the vehicle power-on running state, and the combination instrument sends the current period of incremental mileage data to the vehicle local area network; When the vehicle is detected to be suddenly powered off abnormally, the combination instrument writes the current total mileage data to the temporary power-off buffer module, and automatically reads and sends it to the vehicle local area network next time it is powered on.
[0009] Further technical solutions, the preset data verification trigger mechanism is: When the combination instrument detects that the battery end level changes from low to high and is higher than the level trigger threshold, the data verification is triggered, the data update request is generated, and the total mileage data and the update request are sent to the vehicle local area network; The combination instrument has a pre-stored multi-vehicle battery voltage characteristic database, the combination instrument reads the current vehicle VIN code, matches the voltage characteristic parameters of the corresponding vehicle type according to the vehicle VIN code, and dynamically adjusts the level trigger threshold.
[0010] Further technical solutions, according to the dynamic verification strategy of different scenes to respond to the data update request, are: Get the data update request, the to-be-verified reference value and the current vehicle VIN code forwarded by the remote monitoring module; wherein the to-be-verified reference value is the total mileage data sent by the combination instrument; According to the current vehicle VIN code, the total mileage data of the corresponding vehicle stored in the TSP cloud platform is retrieved and used as a backup mileage value; According to the backup mileage value, the current scene is determined, a difference threshold value set in the current scene is called, the difference threshold value is compared with the difference between the backup mileage value and the reference value to be checked, and a data update request is responded according to the comparison result, the backup mileage value is fed back to the combination instrument, and the total mileage data stored in the local EEROM is updated.
[0011] Further technical solutions, the automatic correction process of the total mileage data in the combination instrument is: According to the backup mileage value, the current scene is determined, including: when the backup mileage value is less than the first mileage threshold value, the new vehicle scene is determined; when the backup mileage value is between the first mileage threshold value and the second mileage threshold value, the normal scene is determined; when the backup mileage value is greater than the second mileage threshold value, the old vehicle scene is determined; The difference threshold value set in the determined current scene is called, the difference between the backup mileage value and the reference value to be checked is compared with the difference threshold value, if the absolute value of the calculated difference is greater than the difference threshold value, the backup mileage value is fed back to the combination instrument, and the total mileage data stored in the local EEROM of the combination instrument is updated; otherwise, it is not responded.
[0012] Secondly, the application provides an automobile combination instrument total mileage automatic correction method.
[0013] An automobile combination instrument total mileage automatic correction method comprises: The combination instrument triggers real-time collection of total mileage data and data update request according to real-time state of the vehicle and preset data verification mechanism, and sends the total mileage data and the update request to the vehicle local area network; The remote monitoring module detects the total mileage data and the data update request in the vehicle local area network in real time, and uploads them to the TSP cloud platform; The TSP cloud platform receives the uploaded total mileage data, responds to the data update request according to the dynamic verification strategy of the sub-scene, feeds back the total mileage data stored in the TSP cloud platform to the combination instrument, and updates the total mileage data stored in the local EEROM.
[0014] Further technical solutions, the dynamic verification strategy of the sub-scene is responded to the data update request, which is: The data update request forwarded by the remote monitoring module, the reference value to be checked and the current vehicle VIN code are obtained; wherein the reference value to be checked is the total mileage data sent by the combination instrument; According to the current vehicle VIN code, the total mileage data stored in the TSP cloud platform corresponding to the vehicle is called as a backup mileage value; According to the backup mileage value, the current scene is judged, a difference threshold value set in the current scene is called, the difference threshold value set is compared with the difference between the backup mileage value and the reference value to be checked, a data update request is responded according to the comparison result, and the backup mileage value is fed back to the combination instrument to update the total mileage data stored in the local EEROM.
[0015] In a further technical solution, the updating process of the total mileage data stored in the TSP cloud platform is as follows: The combination instrument triggers real-time collection of the total mileage data according to the real-time state of the vehicle and a preset data transmission trigger mechanism, stores the total mileage data into the local EEROM and sends the total mileage data to the vehicle local area network; The remote monitoring module detects the total mileage data in the vehicle local area network in real time and uploads the total mileage data to the TSP cloud platform, and the TSP cloud platform receives and stores the total mileage data.
[0016] In a further technical solution, the preset data transmission trigger mechanism is as follows: When it is detected that the vehicle is powered off, the combination instrument stores the collected total mileage data into the local EEROM and sends the total mileage data to the vehicle local area network; The combination instrument sends the incremental mileage data of the current period to the vehicle local area network by periodically detecting the power-on running state of the vehicle; When it is detected that the vehicle is suddenly powered off abnormally, the combination instrument writes the current total mileage data into a temporary power-off cache module and automatically reads and sends the total mileage data to the vehicle local area network next time the vehicle is powered on.
[0017] In a third aspect, the application also provides a vehicle.
[0018] A vehicle comprises the automobile combination instrument total mileage automatic correction system or executes the automobile combination instrument total mileage automatic correction method.
[0019] The above one or more technical solutions have the following beneficial effects: 1. The application provides an automobile combination instrument total mileage automatic correction system and method, which stores total mileage data by using a TSP monitoring cloud platform (TSP cloud platform for short) and cooperates with a request signal uploaded by a combination instrument to complete backup of abnormal instrument data or replacement of instrument mileage, can automatically correct total mileage data in the combination instrument after the combination instrument is plugged in or replaced, ensures that the total mileage data recorded in the instrument combination is always accurate, solves the difficult operation problem of writing mileage data by using a special device, is convenient, safe and does not increase cost, and can further realize automobile combination instrument total mileage automatic correction and updating with full-scene data coverage, accurate verification, multi-vehicle type adaptation and controllable cost.
[0020] 2、The automobile combination instrument total mileage automatic correction system and method provided in the application, a double-trigger data transmission mechanism and an abnormal power-off emergency storage are designed, the problem of sudden power-off data loss caused by single triggering can be solved, complete coverage of mileage data in all scenes such as driving, power-off, power-on and abnormal power-off is realized, scene-dynamic verification logic combined with multi-frame data acquisition preprocessing can avoid the misjudgment / misjudgment problem caused by fixed threshold, is suitable for different use scenes such as new cars and old cars, and improves the verification accuracy; in addition, the level trigger sensitivity self-adaptive adjustment function solves the trigger misjudgment caused by voltage difference of different vehicle models by matching vehicle model voltage characteristic parameters through VIN code; all the optimization designs are based on the original hardware architecture, and can be realized by only upgrading the combination instrument firmware and TSP cloud platform configuration, without adding hardware devices, the implementation cost is effectively reduced, and the compatibility is strong, which is convenient for stock vehicle upgrading.
[0021] Advantages of the additional aspects of the application will be partially given in the following description, partially will become obvious from the following description, or will be known by the practice of the application. BRIEF DESCRIPTION OF DRAWINGS
[0022] The drawings accompanying the specification of this application form a part thereof, serve to provide further understanding of the application, and together with the description of the exemplary embodiments of the application and explanations thereof serve to explain the application, and do not constitute an improper limitation of the application.
[0023] Figure 1 A structural block diagram of the automobile combination instrument total mileage automatic correction system proposed in the embodiment of the application is shown in the figure. Figure 2 A flowchart of the automobile combination instrument total mileage automatic correction method proposed in the embodiment of the application is shown in the figure. Figure 3 A flowchart of the cloud total mileage data updating in the correction method proposed in the embodiment of the application is shown in the figure.
[0024] 1, combination instrument; 2, remote monitoring module; 3, TSP monitoring cloud platform; 4, GPS / 4G antenna. DETAILED DESCRIPTION
[0025] It should be noted that the following detailed description is exemplary only, is only for describing the specific embodiments, and is intended to provide further description of the application, and is not intended to limit the exemplary embodiments according to the application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as generally understood by those skilled in the art to which the application belongs. In addition, it should be understood that when the terms "contain" and / or "include" are used in the specification, they mean that the features, steps, operations, devices, components and / or their combinations exist.
[0026] Embodiment one This embodiment proposes an automatic total mileage correction system for automotive instrument clusters, such as... Figure 1 As shown, it mainly includes a combination instrument 1, a remote monitoring module 2, and a TSP monitoring cloud platform 3. The combination instrument 1 transmits data with the remote monitoring module 2 through the vehicle's CAN bus, and the remote monitoring module 2 communicates with the TSP monitoring cloud platform 3 (hereinafter referred to as the TSP cloud platform) via a mobile network by being equipped with a GPS / 4G antenna 4.
[0027] Furthermore, the instrument cluster triggers real-time acquisition and update requests for total mileage data based on the vehicle's real-time status and a preset data transmission and verification trigger mechanism. It stores the total mileage data in the local EEROM (Electrically Erasable Programmable Read-Only Memory) and sends the total mileage data and update requests to the vehicle's local area network (LAN). The remote monitoring module (T-BOX) detects the total mileage data and update requests in the LAN in real time and uploads them to the TSP cloud platform, while also caching offline data to be uploaded. The TSP cloud platform receives and stores the real-time total mileage data and responds to update requests according to a scenario-specific dynamic verification strategy, feeding back the stored total mileage data to the instrument cluster to update the total mileage data stored in the local EEROM. Through these settings, automatic correction and updating of the total mileage of the automotive instrument cluster can be achieved with full-scenario data coverage, accurate verification, multi-vehicle adaptability, and controllable costs.
[0028] Specifically, considering that relying solely on a single triggering method such as vehicle power-off could lead to missing mileage data if a sudden power outage occurs while the vehicle is in motion (abnormal power-off), and the data upload is not completed, resulting in a high risk of data gaps in extreme scenarios, this embodiment incorporates multiple data transmission triggering mechanisms in the instrument cluster. These mechanisms determine the timing of total mileage data upload, ensuring comprehensive data backup across all scenarios. Specifically, these mechanisms include: (1) When the vehicle power is detected to be off, that is, every time the vehicle power is off, the instrument cluster will store the collected total mileage data in the local EEROM and send it to the vehicle local area network through the vehicle CAN bus. (2) Periodically check the vehicle's power-on operating status, such as sending the incremental mileage data of the current period to the vehicle's local area network every 30 minutes or every 50km driven by the instrument cluster. (3) The instrument cluster has a built-in temporary power failure cache module. When a sudden abnormal power failure is detected, the instrument cluster writes the current total mileage data into the temporary power failure cache module to avoid data loss. The data will be automatically read and sent to the vehicle local area network after the next power-on.
[0029] Through the above-mentioned various data transmission trigger mechanisms, real-time data backup during vehicle driving is ensured, and mileage loss caused by sudden power failure is avoided.
[0030] After triggering data transmission, the total mileage data is sent to the vehicle local area network, which is the total mileage data stored by the combination instrument to the local EEROM. The remote monitoring module detects the total mileage data in the vehicle local area network, uploads the total mileage data to the TSP cloud platform through the mobile network, and the TSP cloud platform receives and stores the total mileage data. The data cannot be manually changed in the TSP cloud platform.
[0031] In addition, the combination instrument also has a preset data verification trigger mechanism. Through dynamic verification logic and adaptive trigger design, the accuracy of data verification and vehicle model compatibility are improved, including: when the combination instrument detects that the battery end level changes from low to high (corresponding to instrument insertion and replacement scene) and is higher than the level trigger threshold, data verification is triggered, a data update request is generated, and the total mileage data and the update request are sent to the vehicle local area network. Through this trigger verification of the change of the low battery end level to high and the threshold value, the scene that needs to be corrected is accurately located, and resource consumption caused by meaningless verification is avoided.
[0032] As an embodiment, considering that different vehicle models have different battery voltage characteristics, in order to ensure the accuracy of data verification trigger, the embodiment also provides a level threshold adaptive adjustment function to avoid trigger misjudgment caused by vehicle model differences. For example: the level fluctuation of some vehicle models when powered on is large, and the level fluctuation of some vehicle models when powered on is small. When a uniform level trigger threshold is set, it is easy to cause false triggering or failure to trigger the instrument replacement verification of some vehicle models. Therefore, in the embodiment, a multi-vehicle battery voltage characteristic database is preset in the combination instrument, which includes the level fluctuation range reference value of different vehicle models when powered on. After the combination instrument is powered on, the vehicle VIN code of the current vehicle is automatically read, the voltage characteristic parameters of the corresponding vehicle model are matched, the level trigger threshold is dynamically adjusted, and trigger misjudgment or trigger failure caused by vehicle model differences is avoided. There is no need to develop a single vehicle model separately.
[0033] While the above-mentioned TSP cloud platform receives and stores real-time total mileage data, it can also respond to data update requests according to dynamic verification strategies for different scenes. The specific process is as follows: First, the data update request, the to-be-verified reference value and the current vehicle VIN code forwarded by the remote monitoring module are obtained; wherein the to-be-verified reference value is the total mileage data sent by the combination instrument; Secondly, according to the current vehicle VIN code, the total mileage data stored in the TSP cloud platform corresponding to the vehicle is called as a backup mileage value; Finally, based on the backup mileage value, the current scenario is determined, the difference threshold set for the current scenario is retrieved, the set difference threshold is compared with the difference between the backup mileage value and the benchmark value to be verified, and a data update request is responded to based on the comparison result. The backup mileage value is fed back to the instrument cluster, and the total mileage data stored in the local EEROM is updated.
[0034] In this embodiment, the current scenario is determined based on the backup mileage value. Specifically, when the backup mileage value is less than the first mileage threshold (e.g., 500km), it is determined to be a new car scenario; when the backup mileage value is between the first and second mileage thresholds (e.g., 500km~100000km), it is determined to be a normal scenario; and when the backup mileage value is greater than the second mileage threshold (e.g., 100000km), it is determined to be an old car scenario.
[0035] After scenario determination, the set difference threshold for the current scenario is retrieved. The difference between the backup mileage value and the benchmark value to be verified is compared with the difference threshold. If the absolute value of the calculated difference is greater than the difference threshold, the backup mileage value is fed back to the instrument cluster, updating the total mileage data stored in the instrument cluster's local EEROM; otherwise, no response is given. For example: Record the backup mileage value. and the benchmark value to be verified The absolute value of the difference is That is, calculating the absolute value of the difference. When backing up mileage values When the mileage is less than 500km, it is considered a new car scenario, and the absolute value of the difference is calculated. , If the distance is ≤100km, the verification passes and synchronization is complete. To the instrument, if If the distance exceeds 100km, an anomaly is detected, and the location is locked. And trigger an alert; when the backup mileage value is 500km or less. When the distance is less than 100,000 km, it is considered a normal scenario, and the absolute value of the difference is calculated. ≤500km verification passed, synchronization To the instrument, if >500km is considered abnormal, issue a warning. Force an update to the instrument cluster; when backing up mileage values For vehicles with a mileage of ≥100,000km, the scenario is considered an older vehicle. In this case, the absolute value of the difference is calculated. ≤800km verification passed, synchronization To the instrument, if >800km is considered abnormal, issue a warning. Force an update to the instrument panel.
[0036] By the above manner, different scenes are divided according to backup mileage values, so as to avoid misjudgment / omission caused by fixed threshold, such as that new car small mileage difference does not need to be forced to update, and old car reasonable wear difference does not trigger an exception, so as to adapt to different use scenes such as new car and old car, and improve verification accuracy; and through the process of comparing and judging the backup mileage and the difference value in the cloud through the VIN code, it is ensured that the correction is only executed within a reasonable difference range, so as to ensure the accuracy of the mileage and prevent malicious tampering risk.
[0037] As an implementation manner, the combination instrument detects the remote monitoring module and the vehicle CAN bus state in real time, displays a fault prompt on the instrument when a fault is detected, and stores the fault state and the current mileage data to the EEROM; after the fault is repaired, the remote monitoring module preferentially uploads the fault log and the cached mileage data, completes the backup process, and guarantees the process closed loop. When the TSP cloud platform verifies an exception, the combination instrument is instructed to update the data and display a bilingual prompt, and the TSP cloud platform synchronizes the exception information to the vehicle enterprise background to trigger manual checking and early warning.
[0038] Preferably, the combination instrument EEROM retains the latest 30 operation logs, the TSP cloud platform permanently stores full logs, the logs are uniquely bound to the vehicle VIN code, and the log content includes triggering time, triggering scene, VIN code, original collection data, verification result, processing action, etc., so as to meet the international regulation requirements that the mileage data cannot be tampered with and can be traced, and facilitate data tracing.
[0039] Embodiment two The embodiment provides an automobile combination instrument total mileage automatic correction method, which is realized based on the automobile combination instrument total mileage automatic correction system proposed in embodiment one, and specifically includes the following steps as shown in Figure 2 Step S1, the combination instrument triggers real-time collection and data update request of the total mileage data according to the real-time state of the vehicle and a preset data verification mechanism, and sends the total mileage data and the update request to the vehicle local area network; Step S2, the remote monitoring module detects the total mileage data and the data update request in the vehicle local area network in real time, and uploads to the TSP cloud platform; Step S3, the TSP cloud platform receives the uploaded total mileage data, responds to the data update request according to the dynamic verification strategy of different scenes, feeds back the total mileage data stored in the TSP cloud platform to the combination instrument, so as to update the total mileage data stored in the local EEROM.
[0040] As an implementation manner, between the above automatic correction strategies, the total mileage data of the vehicle is first stored and updated in the TSP cloud platform, as shown in Figure 3 Firstly, the combination instrument triggers real-time collection of total mileage data according to real-time state of the vehicle and preset data transmission trigger mechanism, stores the total mileage data to local EEROM and sends to the vehicle local area network.
[0041] Specifically, when detecting that the vehicle is powered off (i.e. each time the vehicle is powered off), the combination instrument stores the collected total mileage data to local EEROM and sends to the vehicle local area network through the vehicle CAN bus.
[0042] Alternatively, the vehicle power-on running state is periodically detected, such as the combination instrument sending the incremental mileage data of the current period to the vehicle local area network every 30 minutes or every 50 km of driving; or, since the combination instrument is built-in with a temporary power-off buffer module, when detecting that the vehicle is suddenly powered off abnormally, the combination instrument writes the current total mileage data to the temporary power-off buffer module to avoid data loss, and automatically reads and sends to the vehicle local area network after the next power-on.
[0043] Secondly, the remote monitoring module detects the total mileage data in the vehicle local area network in real time and uploads to the TSP cloud platform, and the TSP cloud platform receives and stores the total mileage data, which cannot be manually changed.
[0044] On this basis, when the instrument software or hardware appears damage problem, plugs in or plugs out the combination instrument plug, or replaces a new instrument, at this time the instrument detects that the level of the battery end changes from low to high, the combination instrument can recognize the change according to the real-time state of the vehicle through the preset data verification mechanism, so as to trigger real-time collection of total mileage data and data update request, and send the total mileage data and update request to the vehicle local area network.
[0045] Then, the remote monitoring module detects the total mileage data and data update request in the vehicle local area network in real time and uploads to the TSP cloud platform.
[0046] Finally, the TSP cloud platform receives the uploaded total mileage data, responds to the data update request according to the dynamic verification strategy of the scene, feeds back the total mileage data stored in the TSP cloud platform to the combination instrument, and stores the data in the EEROM after receiving the data sent by the TSP cloud platform, and uses the data for subsequent total mileage counting.
[0047] Among them, the process of responding to the data update request according to the dynamic verification strategy of the scene is: (1) obtaining the data update request forwarded by the remote monitoring module, the to-be-verified reference value and the current vehicle VIN code; wherein the to-be-verified reference value is the total mileage data sent by the combination instrument; (2) according to the current vehicle VIN code, calling the total mileage data stored in the TSP cloud platform corresponding to the vehicle as a backup mileage value; (3) According to the backup mileage value, the current scene is judged, the difference threshold value set in the current scene is called, the difference between the backup mileage value and the reference value to be checked is compared with the difference threshold value, the data update request is responded according to the comparison result, the backup mileage value is fed back to the combination instrument, and the total mileage data stored in the local EEROM is updated.
[0048] Further, in the embodiment, the current scene is judged according to the backup mileage value, that is, when the backup mileage value is less than the first mileage threshold value (such as 500 km), the new car scene is judged; when the backup mileage value is between the first mileage threshold value and the second mileage threshold value (such as 500 km-100000 km), the normal scene is judged; and when the backup mileage value is greater than the second mileage threshold value (such as 100000 km), the old car scene is judged.
[0049] After the scene is judged, the difference threshold value set in the current scene is called, the difference between the backup mileage value and the reference value to be checked is compared with the difference threshold value, if the absolute value of the calculated difference is greater than the difference threshold value, the backup mileage value is fed back to the combination instrument, and the total mileage data stored in the local EEROM of the combination instrument is updated; otherwise, it is not responded.
[0050] Embodiment three The embodiment provides a vehicle comprising the automobile combination instrument total mileage automatic correction system or executing the automobile combination instrument total mileage automatic correction method.
[0051] The steps involved in the above embodiments two to three correspond to the embodiment one, and the specific implementation manner can be referred to the related description part of the embodiment one.
[0052] Those skilled in the art should understand that the modules or steps of the present application can be realized by a general computer device, alternatively, they can be realized by program codes executable by a computing device, so that they can be stored in a storage device and executed by a computing device, or they can be respectively manufactured into integrated circuit modules, or a plurality of modules or steps among them can be manufactured into a single integrated circuit module. The present application is not limited to any specific combination of hardware and software.
[0053] The above only describes the preferred embodiments of the present application, and the specific implementation manners of the present application are described in combination with the drawings, but the present application is not limited to the scope of protection, and those skilled in the art should understand that various modifications or changes made on the basis of the technical solutions of the present application without creative labor are still within the protection scope of the present application.
Claims
1. An automatic total mileage correction system for automotive instrument clusters, characterized in that, include: The instrument cluster is used to trigger the real-time acquisition and data update request of total mileage data according to the real-time vehicle status and the preset data transmission and verification trigger mechanism, store the total mileage data to the local EEROM, and send the total mileage data and update request to the vehicle local area network. The remote monitoring module is used to detect the total mileage data and data update requests in the vehicle's local area network in real time, and upload them to the TSP cloud platform, while caching the data to be uploaded in the offline state. The TSP cloud platform is used to receive and store real-time total mileage data, and respond to data update requests according to the dynamic verification strategy of different scenarios, and feed back the stored total mileage data to the instrument cluster to update the total mileage data stored in the local EEROM. The instrument cluster transmits data to the remote monitoring module via the vehicle's CAN bus, and the remote monitoring module communicates with the TSP cloud platform via a mobile network using a GPS / 4G antenna.
2. The automatic total mileage correction system for automotive instrument clusters as described in claim 1, characterized in that, The preset data transmission triggering mechanism is as follows: When the vehicle power is detected to be off, the instrument cluster will store the collected total mileage data in the local EEROM and send it to the vehicle's local area network; The system periodically checks the vehicle's power-on operating status, and the instrument cluster sends the incremental mileage data for the current period to the vehicle's local area network. When a sudden abnormal power outage is detected, the instrument cluster writes the current total mileage data to the temporary power outage cache module, which will automatically read and send it to the vehicle's local area network upon the next power-on.
3. The automatic total mileage correction system for automotive instrument clusters as described in claim 1, characterized in that, The preset data validation trigger mechanism is as follows: When the instrument cluster detects that the battery terminal level changes from low to high and exceeds the level trigger threshold, it triggers data verification, generates a data update request, and sends the total mileage data and update request to the vehicle's local area network. The instrument cluster has a pre-stored database of battery voltage characteristics for multiple vehicle models. The instrument cluster reads the current vehicle's VIN code, matches the voltage characteristic parameters of the corresponding vehicle model based on the VIN code, and dynamically adjusts the level trigger threshold.
4. The automatic total mileage correction system for automotive instrument clusters as described in claim 1, characterized in that, The response to data update requests is based on the scenario-specific dynamic verification strategy, as follows: Obtain the data update request forwarded by the remote monitoring module, the baseline value to be verified, and the current vehicle VIN code; where the baseline value to be verified is the total mileage data sent by the instrument cluster. Based on the current vehicle VIN code, retrieve the total mileage data of the corresponding vehicle stored in the TSP cloud platform and use it as the backup mileage value. The system determines the current scenario based on the backup mileage value, retrieves the set difference threshold for the current scenario, compares the set difference threshold with the difference between the backup mileage value and the benchmark value to be verified, responds to the data update request based on the comparison result, feeds back the backup mileage value to the instrument cluster, and updates the total mileage data stored in the local EEROM.
5. The automatic total mileage correction system for automotive instrument clusters as described in claim 4, characterized in that, The automatic correction process for the total mileage data in the instrument cluster is as follows: The current scenario is determined based on the backup mileage value, including: when the backup mileage value is less than the first mileage threshold, it is determined to be a new car scenario; when the backup mileage value is between the first mileage threshold and the second mileage threshold, it is determined to be a normal scenario; when the backup mileage value is greater than the second mileage threshold, it is determined to be an old car scenario. The system retrieves the difference threshold set for the current scenario and compares the difference between the backup mileage value and the benchmark value to be verified with the difference threshold. If the absolute value of the calculated difference is greater than the difference threshold, the backup mileage value is fed back to the instrument cluster, and the total mileage data stored in the local EEROM of the instrument cluster is updated; otherwise, no response is made.
6. A method for automatically calibrating the total mileage of a car's instrument cluster, characterized in that, include: Based on the vehicle's real-time status and a preset data verification mechanism, the instrument cluster triggers real-time acquisition of total mileage data and data update requests, and sends the total mileage data and update requests to the vehicle's local area network. The remote monitoring module detects the total mileage data and data update requests in the vehicle's local area network in real time and uploads them to the TSP cloud platform. The TSP cloud platform receives the uploaded total mileage data, responds to data update requests according to the dynamic verification strategy for different scenarios, and feeds back the total mileage data stored in the TSP cloud platform to the instrument cluster to update the total mileage data stored in the local EEROM.
7. The automatic total mileage calibration method for automotive instrument clusters as described in claim 6, characterized in that, The response to data update requests is based on the scenario-specific dynamic verification strategy, as follows: Obtain the data update request forwarded by the remote monitoring module, the baseline value to be verified, and the current vehicle VIN code; where the baseline value to be verified is the total mileage data sent by the instrument cluster. Based on the current vehicle VIN code, retrieve the total mileage data of the corresponding vehicle stored in the TSP cloud platform and use it as the backup mileage value. The system determines the current scenario based on the backup mileage value, retrieves the set difference threshold for the current scenario, compares the set difference threshold with the difference between the backup mileage value and the benchmark value to be verified, responds to the data update request based on the comparison result, feeds back the backup mileage value to the instrument cluster, and updates the total mileage data stored in the local EEROM.
8. The automatic total mileage calibration method for automotive instrument clusters as described in claim 6, characterized in that, The update process for the total mileage data stored in the TSP cloud platform is as follows: The instrument cluster triggers the real-time acquisition of total mileage data based on the vehicle's real-time status and a preset data transmission trigger mechanism, stores the total mileage data in the local EEROM, and sends it to the vehicle's local area network. The remote monitoring module detects the total mileage data in the vehicle's local area network in real time and uploads it to the TSP cloud platform. The TSP cloud platform receives and stores the total mileage data.
9. The automatic total mileage calibration method for automotive instrument clusters as described in claim 8, characterized in that, The preset data transmission triggering mechanism is as follows: When the vehicle power is detected to be off, the instrument cluster will store the collected total mileage data in the local EEROM and send it to the vehicle's local area network; The system periodically checks the vehicle's power-on operating status, and the instrument cluster sends the incremental mileage data for the current period to the vehicle's local area network. When a sudden abnormal power outage is detected, the instrument cluster writes the current total mileage data to the temporary power outage cache module, which will automatically read and send it to the vehicle's local area network upon the next power-on.
10. A vehicle, characterized in that, Includes the automatic total mileage calibration system for automobile instrument clusters as described in any one of claims 1-5, or performs the automatic total mileage calibration method for automobile instrument clusters as described in any one of claims 6-9.