Study On Dual Fault Tolerance Technology Of Train Control On Train Section

With the development of computer and electronic technology and high reliable theory gradually be mature. Information technology has got more and more broad application in railway signal control system.Since railway signal control system be acting as extraordinary key role in safe,reliable railway transport system,Ensure that the railway signal control system safety,reliability becomes the all-important problem as a result.The computer fault-tolerant system is a redundant system composed of multicomputers by redundant resource and fault-tolerant software running on it according the definite fault-tolerant principle. When run-time error comes forth,the fault-tolerant system will continue executing the procedure and giving out proper results .In the train system the reliability of computer system was piad more attention.So developing the research of computer fault-tolerant system and fault-tolerant technology is very important.This thesis implement dual fault tolerance experiment model taking CBTC (communication based train control) as background and with the train control subsystem as a carrier .At first this paper introduce basic principle and system frame of the CBTC .For the more ,discuss the key technology of the various redundant model.Additionally,implement the redundancy of heartbeat module,fault check module,host-standby switch module and the other module of the dual standby system by the model of message-based mechanism for Winsock I/O.Finally, have carried out the function testing of the software subsystem and simulated the key parameter which affecting the dual fault tolerance system using simulated software Matlab.