Design Of ATIS-Railway Fault Diagnasis System And Research Its Diagnosis Technology

Automatic Train Identification System(ATIS) is a basic information system project in the railway construction of informationization.The system can carry out the dynamic management of train, vehicles and motorcycles,and keep track of data resources for sharing. Once the ATIS system have system failure and can not be ruled out in time,then,on the one hand, Operating efficiency in the application of the railway system will be reduced seriously,in turn,it can affect transportation ability of equipments,such as the railway station,railway line,etc.It could else increase the workload of the labor intensity and operating personnel at all levels.On the other hand,it give railway companies a greater impact on the liquidation of truck toll and will bring huge economic losses to related Railway Bureaus.In order to achieve the master real-time data of in and out traffic within the Railway Bureaus boundaries ,monitor and control the work of the ATIS system equipment in all time, and examine quality of indeed report,,achieve real-time monitoring about the ATIS system failure in particular,which improve reliability and availability of system,this paper advance ATIS monitoring system for Railway Bureaus boundary stations and design the ATIS fault diagnosis system structure and its sub-system.Through introducing the fault diagnosis theory and relevant methods, this paper analyse the current main methods of failure diagnosis.Through comparing a variety of methods between good qualities and weaknesses,the paper put forward the method that based on the probability of belief network fault diagnosis. This method has a solid mathematical basis,the network's structure form is easy-to-understand and can access to expert knowledge and experience, further-more,it has a better efficiency and mature probability inference algorithms and software.In researching the DBN(dynamic belief network) based on timing fault diagnosis, The scope of application of underlying events' significant degree was extended to the general system,and make it more broad applicability of application.Finally, the ATIS system fault diagnosis model is established and simulated with toolbox for the BNT aids which based on the MATLAB and be a good test results.