Design And Implementation Of Modern Tram Ground Monitoring Platform

With the increasingly serious problem of urban traffic congestion,the modern tram has been put into operation in some cities in our country because of its strong capacity,no pollution,low cost and so on.The tram ground monitor platform is the key technology link to ensure traffic safety and improve transportation efficiency.However,most of the existing monitor platforms are designed for the CBTC train control system which is based on the tram-ground communication mode and the C/S architecture,which have the disadvantages of targeted development,flexible change,difficult maintenance and management.Therefore,this paper designed a ground monitor platform which is based on the B/S architecture and can be applied into the tram system based on tram-tram communication mode,the platform realized the reliable communication between the server and the tram/equipment along the line,storing the status data of tram and equipment along the line,dynamic display alarm of interactive page.It has important theoretical and practical significance.Applying computer technology,network communication technology,database technology and refer to related technical specificationthe about central operation subsystem of CBTC train control,the paper designed the ground monitoring platform.The platform includes the data of tram and equipment along the line receiving and processing module,the platform portal system module,the platform monitoring and management terminal module.The data of tram and equipment along the line receiving and processing module is designed in Qt environment using C++ language,realizing the reliable communication between the server and the tram and ground equipment by TCP/IP protocol,achieving the analysis,receiving and storage of related data.The platform portal system module and the platform monitoring and management terminal module are designed with B/S structure,and run on the WAMP platform,adopting HTML+CSS+JavaScript and PHP as the programming language.The platform portal system module achieved functions of platform home,administrator login and station information display.The platform monitoring and management terminal module achieved functions of tram running position real-time monitoring by calling Baidu Maps API and SVG Vector,the tram operation state monitoring,working conditionmonitoring of ground equipment along the line monitoring,alarm and temporary information release management by accessing the server database.Through the joint commissioning test in the laboratory sand table model of Xinjin tram test line with tram model,crossing model and turnout model,the functions of the platform have been verified and achieved the desired effect.In this paper,the design of the modern tram ground monitor platform based on the B/S structure achieved real-time,efficient and reliable monitoring of the tram system.The platform has the advantages of good stability,low cost,simple structure and easy maintenance.Through theoretical research,scheme comparison,platform design and experimental debugging,the design goals are achieved.The realization of the system provides a reference for the further study of the control system of the tram.