The Design And Realization Of A Vehicle Watching System Based On MapX

By introducing to the recent development of GPS , GIS and GPRS, based on MapX control, a plan of vehicles watching and managing system is proposed in this article. This system receives real-time GPS position data, and sends it to Internet through GPRS net. And with the technique of GIS, it realizes managing and attempering vechiles at the watching center. It enhances the vechiles using and managing efficiency, and offers alarming function and communication.First of all, this paper describes the background and significance of choosing this problem. And it introduce the developping status of similar technology in home and abroad. Then, it discusses the involved technology and developping mode in this system.In succession, the paper introduces the structure of the system,the digital map and the creation of frame, the design of system interface and the function and realization of watching center.The paper discusses the characteristics and function requirment of the vehicles watching system, hardware structure and software programming. This system is composed of mobile end, communication network and watching center. The watching center is one or several ordinary PC computer, which can connect to Internet and has a static IP address. It create Socket, Listen to the special port,and distills latitude and longtitude data by programing, and shows position of vechiles on digital map. Further more, it can show the real-time track of vechiles, realize the watching function to the mobile object. In the discussion of watching center, the technique of network programing and electronic chart display technique are expatiated. Much emphasis has been laid on scientific problems such as plotting real- time track curves and synchronizing digital map, dealing with GPS data , the operation of digital...