引信软件失效模式影响分析研究  

Software Failure Modes and Effects Analysis of Fuze

作　　者：董成基[1] 齐杏林[1] 吕静[1] 于毅成[1] 赵志宁[1] 

机构地区：[1]军械工程学院,石家庄050003

出　　处：《装备环境工程》2012年第5期92-97,共6页Equipment Environmental Engineering

摘　　要：可编程器件在新型引信中的应用,使得软件安全性成为影响整个引信系统安全性的重要因素,软件失效后可能通过软硬件界面使硬件发生误动,并可能导致严重的事故。软件安全性分析是保证软件安全性的有效方法之一。将软件失效模式影响分析法(SFMEA)应用于引信软件分析中,从弹药存储至清理全过程分析可能由引信软件导致的风险,给出了分析的关键步骤、常见的失效模式和原因。结合某型基于双微处理器的引信进行了实例分析,发现了其中一个风险未被降低至可接受水平,证明了该方法的有效性。The using of Programmable Logic Devices（PLD） in new type fuzes makes software safety becoming a fatal factor influencing whole system′s safety.The software failures may cause hardware action abnormally through interface between software and hardware,and the abnormal action may cause mishap.Software safety analysis is an effective way to assure software safety.Software Failure Modes and Effects Analysis technique was applied to analyze fuze software safety,including lifecycle risks that may caused by software from ammunition handling to disposal.The key steps of analysis as well as the general software failure modes and the exact causes were given.A case study on analyzing a double micro-controllers based fuze system found an unacceptable risk which isn′t being controlled,which proved the effectiveness of SFEMA technique.

关 键 词：引信软件 SFMEA 软件安全性 风险 

分 类 号：TP311.5[自动化与计算机技术—计算机软件与理论] TJ430[自动化与计算机技术—计算机科学与技术]