临时限速服务器安全评估研究

Security Assessment of Temporary Speed Restriction Server

近年来我国高速铁路飞速发展,越来越多的高速铁路线路投入使用有效的缓解了我国铁路出行的压力。如何保证铁路的安全运行成为了人们亟需研究的问题。临时限速服务器是CTCS-3级列控系统的重要组成部分,其系统安全直接影响到高速铁路的运营安全。文章结合临时限速服务器的实际运行过程,采用安全性分析软件SIMFIA构建临时限速服务器仿真模型,自动生成系统故障树,并计算失效状态最小割集。根据最小割集可以快速找到故障源,从而达到分析临时限速服务器安全性的目的。

In recent years, with China＇s rapid development of high speed railways, more and more high speed railway lines have been put into operation effectively, alleviating the pressure on China＇s railway travel. But frequent railway accidents have caused great threat to people＇s life and property security. It is urgent to probe into how to ensure the safe operation of the railway. Temporary speed restriction server is an important part of CTCS-3 train control system whose safety directly affects the safe operation of high-speed railway. Combined with the actual operation of the temporary speed restriction server process, by use of the security analysis software –SIMFIA to build simulation model of temporary speed restriction server, this study automatically generated the fault tree of the system, and calculated the minimal cut sets of the failed state. According to the fact that minimum cut sets can quickly find fault source, it analyzed the security of temporary speed restriction server.