Maintenance System Of FC Between Railway Stations

With the rapid development of railway system and the advancement of global communications, the maintenance of hardware along railway lines by computers has become increasingly necessary. Field Controller (FC) is such a programmable hardware that is employed to connect, inspect and control various monitors along railway lines. This paper mainly studies the design and realization of Maintenance System of FC between Railway Stations, which can greatly facilitate the good care of that monitors.Such systems should not only send all kinds of telegraphic messages to the low layer of FC so as to realize its control upon requirement, provide users with a convenient and friendly interface, but resolve the synchronization and communication problems of interface part (Operation Module) and the controlling part in the low layer (Transference Module). The system presented in this paper realizes the Operation Module and the Transference Module via Microsoft Visual Basic and Microsoft Visual C++ respectively and solves their synchronization problems through the Message Request and Answer Pattern, which is implemented with the Message Cycle System of Windows. What's more, the system successfully settles the data-sending between the two modules with the Co-Memory mechanism. Besides, UDP and DHCP protocols are employed to send telegraphic messages to FC.The later testing proves the ability of the system to meet the users'demands, hence their acceptance.