Wireless monitoring equipment for coal mines

The utility model provides wireless monitoring equipment for coal mines. The wireless monitoring equipment for the coal mines comprises gateway nodes, a plurality of ordinary nodes, two-way communication links established among the nodes, and routing tables stored in the nodes. With regard to single-time data transmissions with relatively small data sizes among the nodes, the two-way communication links adopt one-time routing; and with regard to periodic data transmissions or data transmissions with relatively large data sizes among the nodes, the two-way communication links adopt persistent routing. The plurality of gateway nodes are employed among the plurality of ordinary nodes, and all the gateway nodes are in data transmission. The wireless monitoring equipment for the coal mines ensures instantaneity and accuracy of alarms by way of selecting a best gateway based on a multiple gateway routing selection algorithm of a shortest path to realize the transmission of alarm information to an underground backbo