摘 要：阐述车辆OTA的工作原理，参照UDS服务协议，针对采用S32K146微处理器的车载ECU设计一种OTA升级系统，在TBOX接收升级包后通过车载EUC进行BootLoader下载。应用结果表明，将OTA用于车辆软件升级，可以提高车载ECU软件更新的快捷性。
关键词：UDS协议；OTA升级；ECU；TBOX；S32K146微处理器
中图分类号：U469；TP31 文献标志码：A 文章编号：1006-3331(2024)03-0039-06
Application of In-vehicle OTA Based on UDS Protocols
WU Chengjia,ZHENG Lei,XIA Yusheng,HAO Xucheng
Abstract: This paper describes the working principle of vehicle OTA.According to the UDS service protocols,the paper designs an OTA upgrade system for the on-board EUC using an S32K146 microprocessor,which downloads the upgrade package through the on-board EUC by BootLoader after TBOX receives the upgrade package.The application results show that using OTA for vehicle software upgrade can improve the fastness of vehicle ECU software update.
Key words: UDS protocol; OTA upgrade; ECU;TBOX; S32K146 microprocessor
