The Research Of Watergate Remote Mornitoring System Based On CAN And Embeded Web Server

The construction of Watergate Remote Monitor System is one of the most important projects in the water conservancy modernization . The target of Yang Xin Watergate Remote Monitor System is to build a supervisor system which is composed of modern computer technology , communication technology ,database technology and WEB technology. The system will greately modernalize the managment of the monitoring system.The background of the essay is Yang Xin Watergate Remote Monitor System . The project is composed of Haikou Watergate , Haikou pump station , RuChi Watergate and FuChi pump station. It undertakes the responsibility of preventing flood and irrigation of YangXin Hubei province. The system has realized the supervisor of the water lever along the Changjiang River in Yang Xin County. It can also control the watergates on the internet in everywhere of the world .We design the system using PLC for controller. Web Server and CAN Field Bus technology are adopted .They advance the real time property and the stability of the system. The cost of the system has also greatly reduced .First of all,the essay introduces CAN Field Bus and Web technology based on emdeded system. It has analysed the structures and mode of the remote monitor and control system. Based on these, the essay designs a remote monitor and control system based on the technology of embedded system and CAN Field Bus , then carries out the hardware model.Second, because some equipments don't have CAN interface, in order to use these equipment conveniently, the essay has designed the mode which can transfer data between CAN bus and RS-232 bus. It can not only transfer data from CAN bus to RS232 bus ,but also can transfer data from RS-232 bus to CAN bus.Last, in order to control and supervisor in a place which is far away, the essay applies the software which is common used in Linux system—boa to realize the control and monitor system. CGI technology is also used in the system , It realizes the control and supervisor by the Web browser. The essay combines the research and practice together. Based on the research conclusion, the essay carries out the practical model and realizes design of the software and hardware of the system in detail. All these work has significance on both theory and practice for the development of the remote monitor and control system for CAN bus based on embedded Internet.