说明：  利用GPRS DTU模块与现场监控PLC通信，并通过GPRS网络将数据发送到有互联网连接的数据服务器上，解决了煤矿主通风机监控信息只能在煤矿局域网内共享的问题。
(The GPRS DTU module is used to communicate with the on-site monitoring PLC, and the data is sent to the data server with internet connection through the GPRS network, which solves the problem that the monitoring information of the main fan can only be shared in the coal mine LAN.)