Desigh And Implementation Of The Simulation Platform Of The Trackside Subsystem Of The CTCS-3 Train Control System

CTCS-3 train control system uses wireless communication system for board-ground communication,and it’s the critical system for ensuring train operation safety in high-speed railways.So it’s necessary to carry out research,study and test of train control system in order to provide important technical support for the construction of high-speed railways through designing the laboratory simulation system of this system.The wayside basic signal equipment,also named trackside equipment,is an important part of the train control system and plays a major role in it,mainly including signal,switch,track circuit,balise and so on.It’s also a susystem to be focused on in the train control system.As the condition that the real subsystems of the train control system are connected to the trackside equipments is difficult to be realized in a laboratory whose area is limited.So this thesis designs the trackside subsystem that can simulate trackside equipments to provide simulation environment of wayside railways for other subsystems.The trackside subsystem can simulate all trackside equpiments of the specified railways with software according to the railway data,so as to implement unified management of the data and status of the simulated trackside equipments,as well as the communication exchange between the trackside subsystem and other subsystems.It solves the problems about the information capture of trackside equipments of the laboratory simulation system,thereby providing good experimental environment of the experiments and training for college students,railway employees of train control system’s test and research.In this thesis,part of the real line data of Zhengzhou-Xi’an PDL is used as an example to design and implement the simulation platform of trackside subsystem by using Visual Studio 2012.First,design the overall plan of the subsystem of CTCS-3 train control system based on the functions of various trackside equipments and related specifications of train control system to clarify the functions and structure of the subsystem.Next,analyze the information interaction interface of each kinds of trackside equipments and other subsystems,and design the communication interface between the trackside subsystem and other subsystems,such as CBI,TCC and ATP.After that,design the system structure of the simulation platform of trackside subsystem and finish the software design of the simulation platform.The subsystem software can be divided into data storage,interface display,logical calculation and communication interface.Among them,logical calculation of the program is the data processing and calculation of trackside equipments,which is the core content,including the message coding of passive balise,train occupation check,equipment monitoring and fault setting.Through the communication tests with other subsystems,the simulation platform of trackside subsystem of CTCS-3 train control implemented based on the design above has realized the simulation of functions conducted in the overall plan,such as trackside equipments’ work,communication interaction,fault simulation,status information management and so on.