摘要
目前大多数车载终端还不具备远程升级的功能,升级维护比较困难。针对这样的问题,提出了一种远程升级解决方案,设计并实现了远程升级系统。远程升级采用被动模式,由监控中心给车载终端发送远程升级指令,车载终端主动连接远程FTP服务器,下载最新版本的程序,然后利用单片机在线编程技术将新程序烧写到车载终端内部Flash用户功能代码区,从而实现远程升级。该升级系统可以自动根据网络的状态调整数据下载的速度,以保证网络传输数据的正确性。经测试,该远程升级系统具有极高的可靠性和安全性。
This paper presents a remote update solution and designs the remote update system.It takes passive mode in remote update.To complete the remote update,the monitor center first sends remote update instruction to vehicle terminal,and then the vehicle terminal request to connect to FTP server and download the latest version of program,after that it writes the downloaded program to the inner FLASH of vehicle terminal by the lAP technology.The system can adjust the download speed automatically according the network state to ensure the correctness of data in network transmission.
出处
《工业控制计算机》
2014年第1期99-101,共3页
Industrial Control Computer
