The Application Research Of Remote Control Communication In Railway Signal System

The interlocking system in the railway signal fields has being secured the security running of railway. The railway signal system has gone through the machinery interlocking, the relay interlocking in technical aspects. With the technical development of electron and computer, including the perfect step by step in the fault tolerance and fault avoidance technique and theory, computer interlocking system has replaced the relay interlocking system. Microcomputer Interlock System has some functions of reliable and fail-safe characteristics, real time characteristics, structure modularization and standardization, including such as some functions of fault diagnoses and analysis, the repeat showing, remote communication.This dissertation has carefully analyzed the remote communication technique of self-using railway signal system in the schedule. There are three communication modules, such as the remote communication of control device layer, the communication between monitor layer and control layer, the communication of interlock system. The PLC communicates the remote I/O modules through PROFIBUS in control device layer. The computer in the monitor layer communicates the PLC through RS-232 or RS-485.Between PC and PC may directly communicate through the computer network and Socket program in the protocol of TCP/IP.At last, this dissertation discusses the application of remote communication technique among arranging concentration system.