Design and Implement of WiFi Wireless Measurement and Control Network

This dissertation studies WiFi technology for industrial measurement and control network.A WiFi wireless terminal and a WiFi wireless access point device are developed.The WiFi wireless terminal realizes data acquisition of the devices in industrial field and wireless transmission.The WiFi wireless network has high transfer rate which is with a strong anti-interference ability and suitable for harsh industrial field environment.The WiFi wireless access point device achieves seamless connectivity with the wired network.The hardware circuit consists of core processor,power supply circuit,WiFi wireless module,Ethernet module,SPI circuit,LED indicator and reset circuit.Transplantation of Linux operating system,WiFi wireless driver program,and the software flow chart are introduced.The system resolves the data acquisition problems when it is difficult or impossible to wire in industrial field environment.