The invention belongs to the technical field of vehicle data, and provides an instrument total mileage backup method and device, and the method comprises the steps: a vehicle body controller backs up the total mileage sent by an instrument; when the vehicle power supply is switched from OFF to ON and the VI N code is written into the new instrument, the vehicle body controller sends the mileage total backup and the VI N code of the vehicle body controller to the new instrument; the new instrument compares whether the vehicle body controller VI N code is consistent with the new instrument VI N code or not, and if yes, whether the total mileage backup value is larger than the current total mileage value of the new instrument or not is judged; if the total mileage backup value is greater than the current total mileage count value of the new instrument, updating the total mileage count value of the new instrument as the total mileage backup value; according to the method, by comparing the VI N code of the vehicle body controller with the VI N code of the new instrument, it can be ensured that when the new instrument is replaced, the total mileage backup received from the vehicle body controller belongs to the corresponding vehicle, and mileage information inconsistency caused by data errors or tampering can be prevented.
本发明属于车辆数据技术领域,提供了一种仪表总里程备份方法及装置,所述方法包括:车身控制器备份仪表发送的里程总计;当车辆电源从OFF到ON,且新仪表写入VI N码后,车身控制器发送里程总计备份以及车身控制器VI N码至新仪表;新仪表比对车身控制器VI N码是否与新仪表VI N码一致,若一致,则判断里程总计备份数值是否大于新仪表当前里程总计数值;若所述里程总计备份数值大于新仪表当前里程总计数值,则更新所述新仪表的里程总计数值为里程总计备份数值;本发明的方法通过比对车身控制器VI N码与新仪表VI N码,能够确保在更换新仪表时,从车身控制器接收到的里程总计备份是属于对应车辆的,能够防止由于数据错误或篡改导致的里程信息不一致。
Instrument total mileage backup method and device
一种仪表总里程备份方法及装置
2025-03-11
Patent
Electronic Resource
Chinese
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