Research And Implementation Of Mine Personnel Positioning System Based On RFID

With the high-speed economic development, the demand for energy keepsgrowing rapidly. Colliery accident has occurred frequently for special conditions inthe mine, so the safety in production aroused more attention. The management ofminers and equipment is very difficult. Due to the lack of reliable information oftrapped coal miners when the mine accident happened, the rescue work is inefficiency.So the design of personnel positioning system in coal mine is important and realistic,it monitors the activities of miners in order to dispatch reasonably and provide a basisfor rescue after disaster.Based on the actual engineering studies of school-enterprise cooperation project“Personnel Positioning System for Mine”, from the perspective of application, thispaper design a solution of personnel positioning system based on active RFIDtechnology for mine safety production. As follows is idiographic research:(1) This paper proposed the mine personnel positioning system solutions from theaspects of system target, function and system structure of the overall design. Theproper deployment of the readers and the reference tags in the underground tunnel, sothat they can cover the entire mining area. When the workers with tags are in therecognition area, the reader can get the information from tags and the value of signalstrength, and with its address number that is uploaded via the CAN bus to thepositioning management software. The values as the input of the positioningalgorithm in order to estimate the position of tag, and it’s save to the database andupdate the real-time picture.(2) In-depth study of wireless location method based on RFID technology, thecurrently used localization algorithms is particularly analyzed and compared. TheLANDMARC algorithm based on RSSI is analyzed specifically. Use the average ofRSSI and orientation correction value to improve it. By the simulated test, this methodhas got a higher positioning accuracy.(3) Wireless data collision between multiple tags existing positioning system,based on the study of RFID anti-collision algorithms, the dynamic frame slot ALOHAalgorithm has been optimized by analyzing the commonly used anti-collisionalgorithms. Hash function allocate gap and control the Q value by section todynamically adjust the frame length. According to experiment, the optimizedalgorithm has higher recognition efficiency. Improved algorithm can be easily implemented in the hardware, so it has high practical value.(4) Research active RFID design theory, the readers and tags are made. Accordingto the specific needs of locating in mine, the detailed design of the entire system fromthe back-end database and positioning management client is provided, and personnelpositioning, report query, alarm processing, staff attendance management functionmodules are introduced.After practical application, the design of improved personnel positioning systembased on RFID technology is proved to be flexible and reliable, low cost, effectivetracking and management of underground personnel positioning, it has a high level ofpracticality and economic benefits.