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

摘要： 文章基于车载控制系统，对商用车整车控制器的双分区数据备份空中下载（OTA） 技 术展开研究探讨，为提升车载电子控制单元（ECU）远程升级过程容错能力与抗异常能力， 提出一种基于车载 ECU 软件的双分区数据备份远程升级解决方案。通过构建 Bootloader 引导 机制实现主、备分区的独立存储与运行管理，并开发程序刷写故障回滚策略。为验证方案有 效性，开展硬件台架测试与实车测试，结果表明，所提方案能有效降低因异常中断引发的 ECU 远程升级失败概率，提升 ECU 程序刷写可靠性、稳定性与安全性，为车辆电子系统远程升级 提供了可靠的技术路径。

关键词: 整车控制器；远程升级；双分区存储；数据备份