Smart Sensor for Underground Coal Mine Based on ZigBee Protocol

The new generation of wireless communication technology(ZigBee) has been widely used in low data rate industry field due to its low power,low unit cost,flexible networking features and so on.Introduced a design of smart sensor based on ZigBee protocol for workspace temperature,humidity and methane detection of underground coal mine as well as for mineworker tracing and alarm service.The design consisted of hardware part and software part with the circuit of wireless micro-controller,sensor and power supply module as the former whilst the working principles of ZigBee stack,operating system and business code as the latter.The experiment effect and the application prospect were given at last as a conclusion.