摘要
随着汽车产业“新四化”的提出,智能网联化已成为汽车领域发展的必然趋势。OTA技术是支撑新一代智能网联车辆落地的关键技术之一。通过OTA技术,实现无感升级功能是大势所趋,该功能可实现用户对升级包下载、传输、安装等过程无感,不影响用户用车的目标。文章主要以智能网联汽车核心零件OTA主节点为研究对象,基于SoC平台,在POSIX环境下,利用增强型A/B备份技术,软件升级系统负责启动独立进程,监控整个软件升级过程系统参数,应用无感升级策略,实现待升级文件无感下载,直接获取待安装文件并调用标准化外设驱动库接口,完成升级文件无感安装,进而实现了整体软件无感自升级功能。试验表明,该系统具有安全性高、升级速度快、稳定性高等特点。
With the proposal of the"new four modernizations"in the automotive industry,in⁃telligent networking has become an inevitable trend in the development of the automotive field.OTA technology is one of the key technologies supporting the realization of the new generation of intelligent connected vehicles.Through OTA technology,achieving seamless upgrade functionality is the general trend.This function allows users to download,transmit,and install upgrade packages without any perception,without affecting the user.Taking the core component OTA main node of intelligent con⁃nected vehicles as the research object,based on the SoC platform,in the POSIX environment,using enhanced A/B backup technology,the software upgrade system is responsible for starting an indepen⁃dent process,monitoring the system parameters of the entire software upgrade process,applying seamless upgrade strategies,achieving seamless download of upgrade files,directly obtaining the files to be installed,and calling the standardized peripheral driver library interface to complete the seamless installation of upgrade files,thereby realizing the overall software seamless self-upgrade function.Experiments show that the system has characteristics such as high security,fast upgrade speed,and high stability.
出处
《上海汽车》
2024年第4期38-42,共5页
Shanghai Auto
