Modeling And Simulation Of Train Control Centre In CTCS Level-3 Based On Colored Petri Net

A new generation of CTCS3(Chinese Train Control System level 3) development and research is a systematic process to build out the platform of train control system simulation testing,which can be convenient,flexible,effective to multiply repeat the experiment,also can draw support from computer storage,performance and analysis, improving the efficiency of System testing and Research and Development.CTCS3 systems' Train control centers' functional requirements are different from CTCS2 systems',and related interactive interface subsystem is increases.Matched with the Train Control system of CTCS3 simulation platform set up,researching Train control center modeling and designing simulation,it has important practical of significance for speeding up the simulation system performance,perfect controlling center software design out,saving the cost of field testing.This thesis follows the general requirements of computer emulation technology, closely integrally cohere the CTCS3 Train Control System's functional requirements towards the Train Control Centre,adopts unified modeling theory of Color Petri nets and its models tools CPN-TOOLS,Established from conceptual model to described model Train control center software system model.Modeling for Train Control Center software system at different layers,establishes out TCC software system layer,occupied information message,access route and temporary speed restrictions commands processing layer and the access route message,temporary speed restrictions model in functions layer and balise message handling fragment model.Utilizing CPN-TOOLS modeling tools in state-space analysis methods to verify the rationality and completeness of the track circuit model in processing layer,through the state space of the query methods,a number of alternate multiple route information,verify the model in function layer.Provide a theoretical basis for the TCC software system emulation's designing.Based on the above hierarchical model of train control center,based on the life cycle of software development modeling,Carrying out Train Control Center system simulation software detailed design and implementation,and executing Joint Commissioning with other ground-based system simulation equipment.Through train control center of Xuzhou East and the section range track circuit of Suzhou East under the low frequency coding test case,to testing problems in the process is proposed protection methods to further improve the simulator of train control centre function.