The invention relates to a vehicle combination instrument total mileage automatic updating method, which comprises the following steps that a combination instrument periodically sends total mileage data and an instrument allowed backup flag bit to a TSP background through a TBOX; the TSP background backs up the total mileage of the instrument for the first time, and the flag bit of the allowed backup total mileage needs to be received as 1; when the TSP background detects that the current value of the total mileage of the instrument is different from the last value in the continuous five-frame judgment process, the current value is abandoned, the frame number counter is reset, and continuous five-frame judgment is restarted; after the vehicle is powered on, the instrument sends total mileage data and uploads the total mileage data to the TSP background through the TBOX; and the TSP background compares the data V1 stored in the TSP background with the data V uploaded by the combination instrument, and judges whether the total mileage data is accurate or not. According to the invention, the problems of management of manual mileage flashing and easy errors after the vehicle combination instrument is replaced can be fully solved, and the problems of data error loss of the combination instrument and manual tampering of the total mileage of the instrument are solved through cooperation of the TSP background and the TBOX equipment.
本发明涉及车用组合仪表总里程自动更新方法,该方法包括以下步骤,组合仪表通过TBOX周期性发送总里程数据与仪表允许备份标志位至TSP后台;TSP后台第一次对仪表总里程进行备份,需要接受到允许备份总里程标志位为1;TSP后台在连续5帧判断过程中,检测到仪表总里程当前值与上次值不同,则抛弃本次值,帧数计数器清零,重新开始连续5帧判断;车辆上电后,仪表发送总里程数据,通过TBOX上传给TSP后台;TSP后台对自身存储的数据V1与组合仪表上传数据V进行比对,判断总里程数据是否准确。本发明可以充分解决车辆组合仪表更换后人为刷写里程的管理和容易出错问题,通过TSP后台与TBOX设备配合解决组合仪表数据出错丢失和人为篡改仪表总行驶里程问题。
Method for automatically updating total mileage of vehicle combination instrument
一种车用组合仪表总里程自动更新方法
2023-08-01
Patent
Electronic Resource
Chinese
IPC: | B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES |
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