Design And Implementation Of Microcomputer Interlocking System For Railway Signals

The main function of the station signal computer interlocking system is to control the turnout,route and signal machine in the station and realize the interlocking function between them.Station signal computer interlocking system is an important technical equipment to ensure the safety of train operation,improve the efficiency of railway transportation and improve the working conditions of train operators.Based on the characteristics of UML technology and VC++ development tools,this paper designs a computer interlocking simulation system for railway signals which meets the safety standards.In the design process,the existing railway specifications and design principles are fully utilized.The author has completed the research through the following steps:The structure and working mode of interlocking system are analyzed.The core business of interlocking system(including train route business,shunting route business,guiding route business,switch operation business,accident unlocking business,section direction business and three-point inspection business)is analyzed in detail with UML use case diagram.The working sequence of interlocking software is analyzed with time sequence diagram.Description,lay the foundation for the follow-up work.The overall structure of the interlocking simulation system is designed,the core data flow is analyzed,and the basic module division is completed.On the basis of module division,the function,input and output of each module are described.Aiming at the more complex route processing algorithm in interlocking,it is described in the form of route registration,route selection,signal opening,signal closing and route unlocking,as well as state transition diagrams.Finally,the function of the whole interlocking simulation system is verified.This paper comprehensively introduces the basic knowledge of signal interlocking system,designs the structure and interlocking software code of the interlocking system of Railway Station,provides the graph of interlocking system test,and describes in detail the realization process of the simulation system of railway station interlocking control.