基于WiFi技术的矿井信号收发器设计

Design of mine signal transceiver based on WiFi technology

针对现有井下无线收发器信号传输距离短、功耗大、抗干扰能力差等缺陷,设计了一种基于WiFi技术的矿井信号收发器。该信号收发器采用ARM9嵌入式芯片及WinCE操作系统,与井下采煤机监控模块建立Modbus协议的数据通信,通过RS485串口接收采煤机运行参数;在WiFi网络内与井下无线接入点建立支持TCP/IP协议的无线连接,并与井上监控中心服务器通信,完成对采煤机运行状态的监控。应用表明,该信号收发器具有较高的实时传输性能,且功耗低,抗干扰能力强。

In view of defaults of short transmission distance, high power consumption and poor antiinterference ability of existing underground wireless signal transceiver, the paper designed an mine signal transceiver based on WiFi technology by use of ARM9 embedded chip and WinCE operating system. The signal transceiver communicates with shearer monitoring module through Modbus protocol and receives running parameters of shearer through RS485 serial ports. Meanwhile, the signal transceiver connects to underground wireless access point based on TCP/IP protocol in WiFi network, and communicates with sever in monitoring center, so as to realize running state monitoring of the shearer. Application shows that the signal transceiver achieves high real-time transmission performance, low power consumption and strong anti-interference ability.