| With the accelerating process of urbanization,traffic congestion and the inconvenience of travel have become increasingly severe.Compared with other modes of transportation,urban rail transit has a large amount of traffic and speed,which is one of the important ways to solve the current traffic congestion.Metro automatic operation system is an advanced control system integrating computer technology and communication technology.It is also the main direction of future rail transit development.At present,China’s research in the fully automated operating system is still in an imperfect stage,and most domestic successful cases have been imported from abroad.Therefore,it is of great significance to the research of fully automatic operation system.This article gives a brief overview of the fully automated operating system.The definition of the fully automated operating system,the framework structure,functional requirements and key technologies are analyzed.At the same time,the functions of various subsystems were carefully analyzed,laying the foundation for the design of the simulation system.In this paper,firstly,according to the requirements of fully-automated vehicle-mounted system,the hierarchical and functional modules of the simulated vehicle-mounted system are divided in detail.Taking the current subway train as the main reference,the train DMI interface and driver controller are designed.Secondly,based on the Train Traction Calculation Procedure,based on the physics model of the train,the calculation methods of the traction,resistance,braking force and resultant force of the train are analyzed.According to the current speed of the train and the distance from the target point,the safe braking curve was calculated by the method of iterative step,and the function of the train speed supervision was realized.In addition,with Visual Studio 2015 as the main development tool,the simulated ATS system simulation control center was designed to remotely issue commands to the train;the virtual ZC was designed to calculate the train’s movement authorization;the simulation interlock system was designed to simulate the approach and Cancel the operation of the switch and display the function of train running;use UDP as the communication protocol to carry out information exchange between systems.Finally,the results of the entire system were demonstrated,some of the functions of the fully automated system were simulated,and the working conditions of the simulated vehicle under different scenarios were highlighted,and the feasibility of the entire design was verified. |
