Design And Realization Of The Yangtze River Sand Mining Monitoring System

The Yangtze River is not only the important pillar of economic development in the coastal area, but also is the main aorta of the Yangtze River carriage and traffic-transport. Illegal sand mining from the Yangtze River is one of the growing problems nowadays. This has created a serious affect on transportation of vehicles accross it and flood protection. As we know, the Yangtze River is so board and there are so many locations for sand mining, the only way for law enforcement ranks is to patrol everywhere. In practice, a considerable number of illegal sand mining is difficult to find out and dealt with timely.With the development of the embedded technology, wireless communication technology and multimedia technology, the traditional video monitoring system with image-compression card plus PC can't meet the requirement of some applications. At present, the last trend is the application of embedded system in video monitoring field, the network video momtoring system based on embedded system has good application and development foreground.This thesis topic is to design an actual project. By using of Intel XScale architectured PXA272 processor as the core hardware system, transplanting Windows XP Embedded as the operating system, combining with video compressing module, GPS, CDMA, wireless bridge. the cameras equipment and so on, constructs the remote monitoring system.Fristly, this article introduces the developed background and key technology, educes the importance and necessarian of this article. Secondly it describes the whole functions and each module's electric circuit designed including the design of choosing processor, video compressing module, backup module and so on. Thirdly, it goes into the system platform operating system transplantation and introduces the application program, which covers SNMP. the multithread programming, series port communication, reading the received signal strength from the wireless bridge, video compressing module, it implements remote tracking, real-time visual monitor, remote voice command in the system. Finally, rigorous testing of the system has been carried out to make sure the system is correct and reliable. The project acceptance has been completed and now it has been running in the sand-mining ship, law enforcement ship as well as law enforcement vehicles and received an excellent feedback.