Design And Implementation Of Section Block Simulation System

With the development of recent decades,the section block technology has been able to prevent train collision and ensure safety effectively,and become a necessary ability for railway signal college students and staff.However,the teaching of the section block technology in most colleges and universities pays close attention to theory and lacks access to practical operations,while pre-job training mainly focuses on technical documents.At present,there lacks a simulation software which can describe section block technology completely and systematically.Aiming to provide benefits of learning the theory and practical operations of section block technology and improving professional skills,designing and implementing a simulation system depends on field equipment and technical specifications,is very significant for the teaching and pre-job training of the railway college students and staff.Through analyzing the 64D relay semi-automatic block system,double-line and double-direction four-aspect frequency shift modulated automatic block system,and the principle and documents of track circuit coding and signal lighting of Train Control Center,a simulation software system is presented,which is consisted of display terminal and control terminal.Display terminal is consisted of three modules of initialization,communication and human-computer interface,while control terminal includes four modules of initialization,communication,simulation and block processing.Then,the data structure of the system is designed,including device,input,output and communication data;Then,the specific system framework is presented through designing the functionalities of initialization,human-computer interface,block processing,simulation and communication.Finally,using Visual Studio 2012 and C#,the section block simulation system is implemented.Based on this system,a functional test is performed,and the results shows that the system achieves the desired function.