Simulation Of Ground Part In CTCS-1 Train Control System Based On Model

As an important part of train control system,ground subsystem not only bears the responsibility of real-time secure communication with vehicle-mounted equipment,but also directly relates to the safe operation of the train in the whole line.The upgrading of CTCS-1 train control system optimizes the defects and shortcomings of CO system,incorporates many advantages of CTCS-2 and CTCS-3 train control systems,and forms a set of transitional train control scheme suitable for new or reformed lines under 200 km/h.However,CTCS-1 train control system needs further research in cross-line operation scheme and compatibility with CO functions.Previous research on train control system modeling and simulation mostly relies on computer programming language.Modeling and Simulation of train control system based on model design method is often used in urban rail train control system simulation or on-board equipment simulation.Some studies only realize the independent functions of each module,but do not realize the integrated simulation process from module to model and then to system.Aiming at the above problems,this paper uses the method of model-based design to study the simulation of ground subsystem of CTCS-1 train control system.The main work of this paper is as follows:(1)After thorough analysis of the detailed functions and interface relationships of each equipment and control system,a simulation process suitable for C1 ground subsystem is proposed based on Simulink/Stateflow modeling method.(2)Simulink/Stateflow graphical modeling is carried out for each module of the ground subsystem,and the basic logic function of the ground subsystem is realized by connecting and integrating the modules.(3)The real line data is integrated into the simulation study,and the line model is designed.The output status of Simulink/Stateflow model is monitored by the graphical display of MATLAB,and the simulation results are accurately displayed in the station yard diagram.(4)Combining with Simulink's general inspection tool,the configuration and design vulnerabilities of the model are screened.The typical train operation scenarios of C1 train control system are simulated by inputting different route numbers,temporary speed limit information and train location information.The accuracy of the simulation results is analyzed,and an example process of converting the signal model into C code is given.