The Analysis And Design Of Train On-line Monitoring System

With the developing of subway in China, the number of Metro vehicle has grown up quickly. At the same time ,with the developing of computer techonology, checking the vehicle of subway by advanced techonology and device has become possible.Computer's ability of aquest data,analysing data and transporting data by the Internet can help the ergineers find and soluting the fault of vehicle remotedly.It has more quickly response and more veracity than traditional checking methods.The train online monitor system included three subsystems: data acquizition system,analyze and control system and WEB express system. All the subsystems share a database management system, while each subsystem as a autocephaly system.In this article, the author described the processes of research and development. Firstly, described the physical theory that the system based on and the main techonology in this system . Secondly, some software system structures were discussed and the best feasible alternative was picked out. Thirdly, the author analysed function of the system and introduced the processes of the system design in detail from two aspects including functional modularity and database.Especially,the author focus on the the studies of key and realization technologies. It includes the theory of embeded system designing and the realization of WEB express.Finally ,the system testing results were analyzed, the main hardware components and the main GUIs were introduced. Meanwhile, the shortages of the system were pointed out and it took a further view of the prospect of the system.