Design And Scenario Simulation Of CBTC Subway Interlocking System Simulation Software

Communication Based Train Control system(CBTC)has become the mainstream application of subway rail traffic signal system due to its advantages of high operational efficiency,short train tracking interval,and less trackside equipment required.Intergrated Supervisory Control System(ISCS)in subway traffic,as the center of unified monitoring and management of all electromechanical equipment in the subway,is also an indispensable part of the automation of subway operation and management.At present,the integration methods of Intergrated Supervisory Control System and Automatic Train Supervision(ATS)adopted by the domestic urban rail mostly focus on environmental control dispatching and electric dispaching,while lack the monitoring functions of the operation plans and the route setting.This thesis takes Intergrated Supervisory Control System centered on traffic scheduling as the research background.In this thesis,under the mode of deep integration of Intergrated Supervisory Control System and Automatic Train Supervision,the centralized interlocking mode design of the unified control of the interlocking of the whole subway line is realized after considering the characteristics of high traffic density,less equipment between stations,and high degree of automation of subway interlocking.In this way,the purpose of simplifying the communication data of trains running across stations and centrally managing and controlling interlocking equipment is achieved,and it is also more convenient for ATS to grasp the train operation and signal equipment status of the whole line.In addition,this thesis analyzes the path search and logic operation of the interlocking on the basis of the structure of the centralized interlocking,determines the mode of unified logic operation of the whole line,and solves the problem of excessive path search nodes in centralized interlocking.This thesis uses the Visual Studio 2019 platform and the C# programming language to complete the design of the centralized interlocking simulation software with Zhengzhou Metro Line 1 as the line template.In this thesis,the centralized interlocking is divided into operation display module and logic operation module according to their functions.In the operation display module,the functions of completing the drawing of the interlocking interface and the simulation of the interlocking operation function are completed;In the logic operation module,the programming of the interlocking logic and the specific functions of the switch,signal,route and platform modules are completed.In addition,this thesis designs an external communication module,through the communication interface with the interlock,the data exchange between ATS,Zone Control(ZC),Veicle On-Board Controller(VOBC)and Computer Based Interlocking(CBI)can be realized.The functional linkage between the interlocking system and the external CBTC subsystem is realized by simulating the impact on the overall CBTC system and the simulated train after receiving and sending the corresponding communication data from ATS,ZC and VOBC.Finally,this thesis verifies that the designed centralized interlocking simulation software can be connected to the CBTC system to complete the interlocking function of the centralized control of the line through the simulation test of various train operation scenarios.