：针对单一的软件升级方式难以满足不同VxWorks 软件升级需求的问题，分析各种VxWorks 软件升级方式的优缺点和适用场合，

设计VxWorks 远程在线软件升级系统，讨论动态软件升级的原理和实现方法。介绍提高升级可靠性的设计，描述系统的具体实现。该系统

组合使用3 种软件升级方式，可基本满足各种不同软件的升级需求。-A single software upgrade method can hardly meet the upgrade requirements of all software. A variety of software upgrade methods’

advantages, disadvantages and applicable situations are analyzed. A remote online VxWorks software upgrade system is designed, principle and

implementing method of dynamic software update are discussed. Some design approaches to improve upgrade reliability are introduced. The

realization of the system is described. The system uses in combination three software upgrade methods, it can basically meet the upgrade

requirements of various software.