Design And Implementation Of Database Subsystem Of CTCS-3 Simulation Platform

With the rapid development of high-speed railway in our country,railway equipment design and manufacturing has been among the forefront of the world,and the train operation control system is the basis to ensure the safe operation of high-speed train,so the research on the new generation of train operation control system has very important significance.Based on the project of Beijing Jiaotong University National Rail Transportation Communication and Control Virtual Simulation "the CTCS-3 train operation control simulation platform",this thesis designs and implements the database subsystem.The platform is built under the indoor environment,through simulating the operation of the Beijing-Shanghai high-speed rail line to show the working principle of CTCS-3 train operation control system.The thesis is aimed at the database server and the inquiry terminal in the database subsystem,analyses the functions of the simulation system,and designs the database and the inquiry terminal.(1)According to the data communication protocol used in the simulation platform,design data table that facilitates database management,implement the data processing of the user data,the train graph data and the dispatching command data in the simulation platform.(2)Design a humanized operation interface of the query terminal;Using multi thread technology and TCP/IP network communication technology to establish a reliable network connection;Using MySQL database technology design and implement the user login function,user account management function,and query for dispatching command function.(3)Extract the train run line data from the database by programming and draw the train graph on the interface to achieve the query function of the train graph;Draw the simulation platform station map by designing rail equipment widgets includes track,switches,and signal machine,processing and displaying the feedback information from computer interlocking system to complete the query function of the station information.(4)At the end of this thesis,using a test to verify the practicability of the designed database subsystem,display the software interface of the database and the query terminal,and explain the operation process of the software,this ensure the quality of the system design.According to the test results,the database subsystem which is designed by this thesis achieved the expected function demand with great demonstration effect and application value,it laid a good foundation for the further construction of the CTCS-3 train operation control simulation platform,it also has a certain reference for the test,research and design of the train operation control system in the future.