Design of Real-time Environment Monitoring System of Coal Mine Goaf Based on ZigBee

Based on wireless sensor networks,a real-time environment monitoring system was designed for surveillance of gas concentration,CO concentration and temperature in the coal mine goaf.This system consists of environmental sensing nodes,router nodes,gateway node,data processing center and several other components.Based on the Zigbee network,the design of the software and hardware of the environmental sensing node were completed.With CC2530 as the main processor,drive circuits were designed based on the features of the sensor signal.And the data acquisition and transmission application software was designed based on Z-STACK.Test results show that the system can complete the appropriate functionality to meet the application requirements.