Miner safety monitoring system, calibration method and false alarm elimination method

The invention relates to a miner safety monitoring system. The system comprises a mobile terminal. The terminal comprises a plurality of sensors, a positioning device, a timer, a microprocessor, a memory and an alarm module. The microprocessor comprises a wireless communication module, and the microprocessor receives real-time data from the sensors and stores the data in the memory; the received sensor data is transmitted to the server in real time through the wireless communication module; the microprocessor is compared with the threshold value of each parameter pre-stored in the memory; when the real-time data, received by the microprocessor, of one or more sensors exceed the threshold value of the parameter, alarm information is generated; the host or the server of the system can compare the received data of the terminal sensor in a certain range position with the received data of the same kind of parameters of the fixed sensor which is fixedly arranged in the same time period, and when the deviation value