Dynamic Physical Simulation System For Urban Rail Transit Operation

Urban rail transit industry has developed rapidly in recent years.More and more cities in China are building rail transit.The demand for talents in urban rail transit is also growing.Therefore,it is of great significance to study the method of cultivating a diverse population of urban rail transit personnel.The system platform designed in this paper is aimed at providing a better training and learning tool for the rail transit industry.Firstly,this paper analyzes the needs of the train dispatching subsystem and designs the overall structure of the system from the perspective of function implementation and architecture,which is divided into orbital sand table platform subsystem,communication control subsystem and service control subsystem.For sand table platforms,equipment such as switch controllers,signal controllers,and wireless locations on the solid sand table are designed and developed.For communication control,using Zigbee wireless communication technology and infrared sensing technology to build the wireless sensor network of the system.For service control,the train operation dispatching system is made up with the operating terminal of the train operation dispatching,the transport management and the train driver etc.Secondly,build the data structure of various business of the system.Divide the data structure of the basic equipment in the system into three types: basic properties,state properties and graphic properties.A route search model based on Floyd algorithm and high priority search algorithm is put forward to achieve the establishment of route in the train dispatching subsystem.Then analyze the control process of manual and automatic approaches in the system and link the control of various devices to the database in the same time.Thirdly,introduce the structure and functions of the train dispatching subsystem.The paper mainly designs an optimization algorithm of route arrangement for turn-back stations.By solving multiple-target problems,such as arrival time,departure time,uniqueness of route selection and so on,with single-target solution,and combining the programming ideas of the system,the paper solves the conflict problems of multi-category route arrangement that occurs in the turn-back station of the system.Finally,through the debugging of hardware devices and software of the system,the maintenance functions of various types of data on the simulated operating terminal of the system is achieved.Moreover,the main functions of the operating terminal of the train dispatching is also achieved,including the functions of the achievement of train dispatching station graph,the arrangement of artificial route,the trigger of automatic route,the settings of train detaining on the station or none stop for certain station and the generating of log report.