Research And Design On Railway Signal Electronic Interlocking System

The main functions of the station signal interlocking system are the realization of controling the station turnout,route,signal and interlocking functions between them. Station signal computer interlocking system is the important technical equipment to ensure traffic safety within the station,improve the efficiency of rail transport and improve the important technical equipment of driver working conditions.1. On the current existence of several types of computer interlockingsystem from the system structure and working principle of a detailedanalysis of the above work on the computer interlocking system from the system architecture, software structure and hardwarestructure of the above to do a serious understanding.2.Based on the Object-oriented software developing method,this paper designs the interlocking software with these steps:demand analysis, establishment of object model,designing ofsystem structure and data structure.3.The paper finished the study of using VisualStdio 2005 development environment and C++language to study computer interlocking system, which bases on Object-oriented requirements analysis and system design. System based Windows platforms. PC mainly used for fuman-computer interaction to achieve the station interface displaying, station status for real-time rendering and transmit work and interlocking machines information receiveing and processing in generating the operation command. Interlocking machine achieves logical processing of signal equipment,interlocking machines and analogtraget machine based on advances industrial computer ete the command of route arrangement,locking,issuing an open signal,switch action and achieves unlock function of unlocked approaches automatically,malfunction to unlock and so on.4. analyzes the relevant designing implementation of ethernet communication mode computer interlocking system host computer based on heartbeat packet mechanism between computer interlocking system host computer and interlocking mechanism and the relevant designing implementation of communication mode between interlocking mechanism and simulated index machine based on CAN bus in the paper realized,and running some function simulation in interlocking system implemented in a simulated environment at last. At the conclusion of the dissertation, perspective of the development of computer-based intedocking technology is made.