Simulation Analysis of Train Speed Measurement Technology Based on Urban Rail Transit System

摘要

With the rapid development of urban rail transit, the velocity measurement and location technology of train has become one of the key technologies of the automatic operation control system of the train. To realize the interval of the train and safety-control of train velocity, we must first timely acquire the operation velocity and the current location of the train. The accuracy of velocity-measurement and location restrict the control accuracy of the automatic operation control system, and the accuracy of velocity-measurement and distance-measurement is rather low, which will not only increase the unsafe factors for the train, but also cause the distance for the security protection of the system become too large, thus affecting the transport efficiency. Therefore, further research on velocity measurement and location method of the train is of great and far-reaching significance in promoting the development of urban rail transit. This paper focuses on the role of simulation of velocity measurement and location method based on the wheel axle velocity sensor in urban rail transit. According to the characteristics of different sensors, it discusses velocity measurement and location method by photoelectric sensor information fusion of different sensors, analyzes the advantages and disadvantages of several measurement methods, establishes the algorithm model of velocity measurement and location system, and puts forward the ultimate velocity measurement simulation program.