Positioning system for miners based on RFID

Mine accidents occur frequently recently. The situation under mine is very complicated. So it is very difficult to rescue the miners when accident happens. If we can determine the accurate position of miners under mine, the casualty rate will be decreased greatly. So the positioning problem of miners is an urgent task during the coal mining processing. Many schemes are proposed, but ineffectively. Our system use advanced Radio Frequency Identification (RFID) to tracking and positioning the miners. Once the accident occurs, we can find the miners with the fastest speed. So we can limit the casualties at the lowest line.