首页|The FMEDA Based DC Calculation for Railway Safety Computer
The FMEDA Based DC Calculation for Railway Safety Computer
扫码查看
点击上方二维码区域，可以放大扫码查看
原文链接
NETL
NSTL
万方数据
This paper presents a new algorithm to compute the Diagnostic coverage (DC) for railway safety computer using the Failure modes effects and diagnostic analysis (FMEDA) theory.The importance to work out the DC accurately is stressed.A certain type of railway safety computer's output element is taken as an example to show how the DC is worked out using the FMEDA method.The probability of dangerous failures per hour (PFH) of one certain safety computer is obtained considering the DC.The final results show that the DC is 99.6％ and the PFH of the safety is 1.165 fit,which means 1.165 dangerous failures may occur during 1 billion hours' working time,running up to the requirement of the Safety integrity level 4 (SIL4).This paper provides an example to come up with the DC for safety computer,thus making the PFH calculation more accurate and so is the Safety integrity level.
Diagnostic coverageDangerous failures per hourSafety computerSafety integrity level
WANG Juhan、GAO Ying、CAO Yuan、TANG Tao、ZHOU Mingjun
展开 >
School of Electronics and Information Engineering,Beijing Jiaotong University,Beijing 100044,China
Graduate Department,China Academy of Railway Science,Beijing 100081,China
National Engineering Research Center of Rail Transportation Operation and Control System,Beijing Jiaotong University,Beijing 100044,China
Railway Electrification Transformation Project Construction Headquarters,China Railway Harbin Bureau Group Co.,Ltd.,Harbin 150001,China
展开 >
This work is supported by the High-speed Rail Joint FundThis work is supported by the High-speed Rail Joint Fund
NETL
NSTL
万方数据
