The Risks Assessment Of Security In Track Traffic Signal System Of City

Summaries:with the development of traffic of orbit of our country city develops quickly, city track traffic operation safety more and more get attention.Risk assessment is the effective method to reduce operation safety risk.In this article, the integrated use of the fault tree analysis method, analytic hierarchy process, the city rail transit signal system risk assessment were studied.City rail transit is a huge complex system, many factors affect its safety operation.This article systematically summarizes the city and track traffic operation in the presence of various risk factors, and then focus on the analysis of signaling system in switch fault, axle fault, fault of track circuit, network and computer equipment failure, public part of the effect of five main causes of risk, fault tree analysis is used to establish the fault tree, and the minimal cut sets and the bottom event of important degree analysis.In fault tree analysis foundation, through the analytic hierarchy process to determine the weight of factors on each component, each component factors in the occurrence probability and severity of consequence assessment, which determine the risk grade, the establishment of risk evaluation in the membership matrix, Shanghai track traffic safety risk evaluation.