| By the development of science and technology, computer technology, information technology, and telecommunication is more and more integrated into industrial control system. Integration, network, and intelligence is the develop trend of the future industrial control system. Field bus and remote monitoring is put forward in this trend. Remote control system based on network overcomes the limit of geography. It can manage and control multisystem in all directions. The research of this system is very meaningful.In this paper, it is to research a remote control system based on network used for solar energy fresh air system. The control system can not only meet the requirement of solar energy fresh air system, but also be applied in other industrial control system by using the control model. The system performs the function of running control, remote monitoring, and automatic control of heating fresh air for solar energy control system.The control object of the system is solar energy control system. Firstly, the running principle and control requirement is analyzed in this paper, and a control system of field bus combined with remote monitoring is designed. iCAN protocol based on CAN-bus is used to build a hardware platform of filed bus. CAN-bus is flexible and reliability. Software of control system is based on virtual instrument technology, and developed by LabWindows/CVI. The software includes the function of running control, data monitoring, data saving, and automatic control algorithm. Automatic control algorithm is fuzzy control, and programmed by combining of LabWindows/CVI and Matlab. Remote monitoring is based on TCP/IP, and programmed by the TCP library function of LabWindows/CVI. It performs the function of data transmission and monitoring.Control system is integrated with field bus technology, network, virtual instrument technology and intelligent control algorithm. It keeps up with the trend of the modern industrial control system. |
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