Research Of Fundamental Database For CBTC Simulation Sys

With the accelerating urbanization and the unique advantage, the subway has been became the excellent choice to solve urban traffic pressure. Now all urban subway constructions begin to pick up. And with the realization of the movable block, Communication Based Train Control System (CBTC) can take place of the track circuit based control system, for its great improvement on carrying capacity of the block section, the flexible organization of two-way operation and one-way continuous departure. Also, the trend is inevitable.With the development of CBTC in the urban railway system, we try to develop and improve the urban rail transport CBTC simulation system, establishing the computer aided design platform for the project of the urban railway system. Because of the embedded train dynamics model and train control model, the system can provide the theoretical basis for the whole process design of urban rail transit projects, and can realize optimized configuration in the civil and electromechanical system through accurate calculation on the lines, traffic organization and related system in the premise of safety.Combined with the research and development of CBTC simulation, the author first analyzed the application of graph and directed graph theory in the database of the lines in detail, including how to use a directed graph to describe a urban rail transit station; how to describe the signal equipment and the route information in the station-yard based on directed graph; and finally, how to search the route. This paper also analyzed the data structure definition and storage of each subentry in the line database, and the position of the line database in the CBTC simulation system, at last, the interfaces for other parts.The author focused on what is the simulated/simulation system, and the working principles and advantages of the simulated/simulation system. And the paper emphasized the structure of CBTC analog/simulation system, why we need map the line database with the ATS show, and put forward two data mapping methods.Finally we introduced the structure of the management software for the line foundation database and the design results of the simulation system, at last the outlook of the next stage.