基于WiFi的无线测控系统设计与实现

Design and Implement of WiFi Wireless Measurement and Control Network

本文研究了WiFi技术应用于工业测控网络,开发出WiFi无线终端和WiFi无线接入点设备。WiFi无线终端实现工业现场设备的数据采集与无线传送。WiFi无线网络传输速率高,具有较强的抗干扰能力,适合在恶劣的工业现场环境中使用。WiFi无线接入点设备实现了与有线网络的无缝连接。由核心处理器、电源电路、WiFi无线模块、以太网功能模块、SPI电路、LED指示灯、复位电路等构成硬件电路设计。介绍了Linux操作系统的移植和WiFi无线模块驱动程序的移植,以及相应的软件流程图。该系统解决了工业现场环境中设备不能布线或很难布线时的数据采集问题。

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.