关键词: 整车控制器；远程升级；双分区存储；数据备份

Abstract: Based on vehicle control systems, this paper investigates the dual-partition data backup over-the-air (OTA) technology for commercial vehicle control units. To enhance the fault tolerance and anomaly resistance of the remote upgrade process for in-vehicle electronic control units (ECU), a dual-partition data backup remote upgrade solution based on in-vehicle ECU software is proposed. By constructing a Bootloader boot mechanism, independent storage and operation management of the primary and backup partitions are realized, and a firmware flashing rollback strategy under abnormal conditions is developed. Hardware bench tests and real-vehicle tests are carried out to verify the scheme. The results show that the proposed method effectively reduces the ECU remote update failure probability caused by abnormal interruptions, and improves the reliability, stability and security of ECU firmware flashing, which provides a reliable technical approach for remote upgrading of automotive electronic systems.

Key words: vehicle control units; remote upgrade; dual partition storage; data backup