Research On Communication Based Train Tracking Interval Control

Train tracking interval control technology based on communication,is the development direction of rail transit control at present and in the future.It is based on train positioning,the train location is transmitted to the computer by wireless communication,and then the computer by the track calculates the moving authorization of the train on the line to realize the tracking interval control of the train.This paper introduces the principle and structure of CBTC system,designs the algorithm of train tracking interval control technology based on wireless communication,and tests it on Suzhou Rail Transit Line 4.The test results meet the expected requirements and are successfully applied to Suzhou Rail Transit.Line 4 line operation.The main research work in this paper is as follows:This paper studies the method of train positioning,expounds the concept and algorithm of train positioning error,and explains its importance.According to the line parameters of Suzhou Rail Transit Line 4,it calculates the train positioning error under the most unfavorable conditions.Based on the principle of wireless communication transmission,the reliability of wireless communication system is studied and analyzed.The distribution of wireless communication transmission system is designed according to the line structure of Suzhou Rail Transit Line 4.The method of train tracking interval control is designed.Combining track data and train data,an algorithm of tracking interval control is proposed and applied to Suzhou Rail Transit Line 4 to realize train tracking interval control.The application of train tracking interval control system based on wireless communication in Suzhou Rail Transit Line 4 is tested.The train location,wireless communication quality and minimum train tracking interval are tested respectively.The test results meet the design expectations and the line operation requirements.