星载通讯软件的可靠性设计方法

摘要

Firstly, the failure model of Spaceborn communication software is given for space environment, especially SEU (Single Event Upset), unlike common communication software, then the design flow for spaceborn software is set , and some measures are taken such as register renewed periodically, memory voting and redundancy design. Finally fault injection is applied to validate. Practical results show that the design is necessary and effective.%为避免空间环境尤其是单粒子翻转效应(SEU)对星载通讯软件的危害性影响,建立星载通讯软件通用的失效模式分析模型,并针对典型的失效模式如中断无法响应、帧格式错误等,给出与一般通讯软件不同的高可靠性软件设计流程,在设计方法上采取寄存器定时更新,存储区表决法以及冗余设计等可靠性措施避免失效,通过对固定位置的存储单元模拟SEU故障注入的方式进行验证;实验表明此设计降低了单粒子翻转的危害性,提高了星载通讯软件的可靠性,具有普遍意义.