铁路信号系统中安全关键软件的安全分析方法  

Safety Analysis Approach for Safety Critical Software in Railway Signal System

作　　者：林伟欣 胡源 李梅 LIN Weixin;HU Yuan;LI Mei(CASCO Signal Co.Ltd.,Shanghai 200070,China)

机构地区：[1]卡斯柯信号有限公司,上海200070

出　　处：《微型电脑应用》2022年第4期183-186,190,共5页Microcomputer Applications

摘　　要：铁路信号系统中的安全关键软件,在其生命周期内需要有系统性的安全分析方法,保证软件的安全和质量要求。基于铁路信号系统软件EN50128标准的软件开发生命周期模型,提出了基于软件开发周期完整的安全分析流程,并结合轨旁设备安全控制平台开发过程为实施案例,给出了各个阶段实现的具体方法指导,具有系统性和可操作性。解决了轨道交通领域通信信号系统安全关键软件全生命周期安全分析的工程化实现问题,并符合EN50128标准对软件安全保障的相关要求,对安全关键软件的安全保障工作具有重要的工程指导价值。Systematic safety analysis process is essential to ensure the safety and quality for safety critical software in railway signaling system during its life-cycle.A complete software safety analysis process and the specific methods to manage the process are prosed based on the development module defined in software standard EN50218 in railway signaling system.The systematic and feasible process provides a theoretical basis and implementation method for safety assurance in software development life-cycle,and an example of railway side vital control platform development process is provided.The proposed safety analysis approach complies with the software assurance requirements required in EN50128,and can be used as an engineering approach for software safety analysis in railway signal system,which has practical engineering application and reference value.

关 键 词：软件安全 安全分析 软件生命周期 铁路信号系统软件 

分 类 号：U284.95[交通运输工程—交通信息工程及控制]