Reliability Analysis of the Railway Time Synchronization Network Based on Bayesian

With the high speed railway speed increasing and driving distance shortening in China, the time conformity of subsystems of railway is becoming more significant to railway traffic safety. The railway time synchronization network (RTSN), the medium carrying and broadcasting time information, is responsible to convey the information of internal clock of railway and its function poses direct influence on the time conformity of subsystems of railway. This paper firstly analyzes the RTSN, including its functions, the differentiation of layers in system, and the hardware framework. Then combining factors like equipment redundancy and common cause failure, etc, the paper collects a large number of data by gathering field data and experts suggestions and Bayesian (BN) is established. Thus reliability analyses of RTSN is conducted and, by inference, its weak links can be discovered, which puts forward references to the maintenance distribution and resource checking of the constructing RTSN.