Vehicle Network Monitoring System Based On WebSocket Protocol

With the development of society,the integration of vehicle network and Intelligent Transportation Systems is becoming more and more closely.The development of Internet of vehicles in various countries is aimed at improving road traffic and reducing traffic accidents,so as to build a safe,reliable and efficient intelligent transportation network.As an important component of IoV and ITS,a real-time and stable monitoring system can effectively improve the safety of transportation and the efficiency of vehicle management,and bring about good social benefits.Based on the development status of vehicle networking monitoring systems in domestic and international,this thesis designs and implements a WebSocket protocol based vehicle network monitoring system.This thesis firstly analyzes the characteristics and existing problems of HTTP-based long connection technology and browser-based plug-in technology widely used in server push technology,and then researches and analyzes the implementation principle of WebSocket communication protocol in HTML5 standard and the advantages relative to other server push technology.According to the design requirements and design principles of the vehicle networking monitoring system,this thesis uses WebSocket protocol to realize the real-time communication between the vehicle terminal,server and browser client in the system.This thesis completes the implementation of user registration module,Connection management module,data analysis module and data push module in WebSocket server.On this basis,This thesis combines the Web application development framework CodeIgniter,jQuery technology,online maps and Highcharts chart library to achieve real-time monitoring of vehicle running status,vehicle position tracking,and visualization of data graphics etc.In the end,this thesis makes a functional test and performance test on the system.The test results show that the vehicle network monitoring system can realize the accurate data transmission and real-time monitoring functions.The system has good real-time performance and stability,and meets the design requirements of the system.