The RFID-based positioning equipmen

The RFID-based positioning equipment, which is widely used in mine operation such as coal mine, has the
advantages of low cost and maturity. It can locate human effectively so that it could improve the production safety
situation and provide guarantee for disaster prevention and relief. However, the traditional RFID technology has
the drawbacks of small monitoring range and no orientation which cause larger deviations and blind area in
personnel locating. In this paper, we design the coal mine personnel positioning system based RFID. The system
could track the underground person and draw the movements between the RFID base stations by the shortest path
principle and algorithm. Combining the factors of time and experience data, the system can also predict the person
position in blind area of the base stations. That improves the localization ability of RFID system.