井下人员定位的超宽带TWR改进算法

Improvement algorithm of ultra wide band TWR for underground personnel positioning

针对现有的煤矿人员定位系统定位精度较差、抗干扰能力较弱等问题,提出了一种基于超宽带无线通信技术的定位系统,改进TWR测距算法及硬件电路设计,通过仿真实验验证其可靠性。研究表明:当前使用的煤矿井下人员定位系统定位精度50 m,该定位系统定位精度达到0.8 m,误差范围具有显著的提升;电路设计时加入拨码开关,可以支持至少200人同时定位。该定位系统满足煤矿用人员定位系统的规定及标准。

This paper proposes a positioning system based on ultra-wideband wireless communication technology,which is designed to address the notorious issues,such as lower positioning accuracy of existing coal miner’s positioning system and poorer anti-interference ability.The system enables an improvement in the TWR ranging algorithm and hardware circuit design and the reliability of the positioning and is verified by simulation experiments.The research shows that the system provides the positioning accuracy up to 0.8 m,demonstrating a greater improvement than the 50 m error range of the currently available personnel positioning systems in underground coal mine;and a dial switch added to the circuit design allows for the simultaneous positioning of at least 200.The positioning system is up to the requirements and standards of coal mine personnel positioning system.