Abstract:

In view of the types of Roof abscission layer instrument in Coal Mine at present, and according to the measurement principle of the roof abscission layer instrument and the way of recording roof abscission layer data in the actual, the paper puts forward an innovative system that adopts Zigbee technology , which transmits data. Substation and roof abscission layer instrument in every measuring position constitute an abscission instrument network, and through Man Machine interface of the substation, we monitor the state of roof separation in real time, and this way realizes automation and network of abscission layer monitoring，using the sectional digital capacitance sensor，improves overall measurement accuracy of the product and reduces the cost.

Key words: Zigbee, Wireless sensor network, Roof abscission layer instrument, the sectional digital capacitance sensor