Research And Design Of Real-time Monitoring System Used In Power Plant's IDF Based On WiFi Network

With the development of science and technology, industry systems is becoming more and more integrated, which requires key equipment in industry system for real-time monitoring and research on monitoring system has become an important research direction of industrial system. Embedded control system based on WiFi wireless network integrate embedded technology, WiFi wireless network technology, sensor technology and Web application technology, with strong real-time, high-speed network transmission, the system set up flexible and rapid, remote monitoring is not limited by host computer and characteristics. In this article, IDF(induced draft fan) in thermal power plant as a control object, study on WiFi wireless network and Embedded System used in industrial monitoring system.Research content and research results of the article are as follows:First of all, research and analysis to the WiFi wireless network technology, key analysis of security algorithms and safety management and other mechanism taken to IEEE802.11 protocol to ensure the security and privacy of communication.Second, based on the research on Running conditions and Common accident of IDF, make up embedded real-time monitoring project based on WiFi wireless network. The project real-time monitors IDF's speed, temperature and current. Desgin and development of the corresponding control circuit.Embedded terminal designed with SOPC technology, using cyclone-II 2c35-type FPGA as the main control chip. Custom 32-bit Nios II soft-core processor, design the peripheral hardware control module for monitoring circuit, encapsulate Nios II processor and peripheral module in the FPGA. Real-time operating systemμC/OS-II development of software system and embedded TCP/IP protocol stack LwIP development of Web service.