井下RFID定位系统的读写器防碰撞技术研究

Study on Preventing Collision Between Reading Writer Devices of RFID Positioning System of Coal Mine Underground

随着技术的进步,RFID(射频识别)已在煤矿井下动目标定位中得到了应用。由于频率资源有限,读写器之间往往存在频率干扰,将导致RFID定位系统出现读写器碰撞问题。分析了读写器碰撞的3种情形,根据二进制搜索算法,提出了基于时分多路的二进制搜索防碰撞方法,并对其工作性能进行了分析,性能分析表明该算法满足实际应用需要。

With the development of RFID technology, it has been applied in positioning System of moving object of coal mine underground. Because of the frequencies limit, the interference between reader writer devices caused refer writer devices collision.problem. Reader writer devices collision problem was analyzed with three situations, and introduces a method of preventing collision was presented in accordance with binary - search- tree of the search of binary system based on TDMA. And some of its functions were analyzed. Moreover, the performance analysis shows that it satisfy actual application.