Radio Frequency Identification Technology Research Based On The Underground Personnel Positioning System

China is a big country of coal production and amsuption. The economic can’t do without coal.Because coal resources stored in underground. there are some risks that hidden dangers in mining production. A major accdent in decades, coal production to the society. family have brought serious losses. So the coal mine safety production is an important task of the national production safety, reduce coal production accidents, coal mining rate wil be reduced to the lowest level, only rely on the system requirements can not be fully realized. It must control from the aspects of technology, equipment input thoroughtly.With the development of RFID by leaps and bounds in recent years. It is gradually used in various fields of production and life. The RFID improves the efficiency of production. the accuracy and convenience of technical provides convenience for us, the last reduces the cost. The RFID is applied in coal mine underground personal orientation and management. it has been incorporated into the national laws and regulations. The geology and topography of coal mine are complex. The useful of RFID principle and characteristic,the reader-writer device is mounted in the underground tunnel. For the well personal belong to their own tags. The underground and ground terminal connected through the advanced CAN bus connections. Combining with computer software management system, can help to understand and prasp the underground personal the location of underground personal oritentation information. to achieve 24 hours of uninterrupted location identification. In addition to the realization of peraonal orientation, system can assist in the management of attendance, alarm and other functions.In this paper, the basic of principle of RFID workflow. though underground personl orientation system requirement analysis. functional design put forward the necessity to establish the system. A focus on the RFID in this paper, the signal transmission method and computer software management function and demonstrate the realization of software system. In the core module,the processing of multiple access of RFIDin anti collision.the antenna perforrance problems of reader-writer and tag. Through this paper analysis that can establish a set of mature, accurate and convenient underground personal orientation system.To provide protection for the safety mof coal production, coal accident and disaster relief of technical support.