基于无线网络的井下人员快速定位系统研究

Research on Fast Positioning System for Mine Workers Based on Wireless Networks

为了可以实时获取井下工作人员位置、环境状态等信息,设计了基于无线通信网络的井下人员快速定位系统。将RSSI算法应用于井下特殊环境,同时设计了三边测量校正方法。推导了人员定位数学模型,仿真分析了影响测距精度的两个重要参数。实验采用不同距离条件下的3个信标点测试移动点(人员)随距离变化入网后的具体位置,结果显示,直线巷道300 m内掉包率为0,弯道巷道200 m内掉包率为0,50 m内人员随机入网人员定位精度满足1 m的设计要求。

In order to obtain real-time mine location of staff,state of the environment,thereby preventing the occurrence of mine accidents,a fast positioning system for mine workers was designed based on wireless communication networks. After analyzing the various positioning algorithm,RSSI algorithm was applied to the special mine environment,trilateration correction method was designed for improving testing accuracy. A mathematical model for personnel positioning was derived,and the impact of two important parameters ranging accuracy was simulated. Experiments in the mine tests obtained corresponding environmental parameters through the point to point. On this basis,three beacons with different distances were used to test the specific location function of the changing distance of mobile points（ person） joined in the network. Experimental results show that within 300 m the straight roadway substitution rate is 0,within 200 m the curve roadway substitution rate is 0. Using the algorithm,and under 50 m the mine workers put into the networks is in random,it meets the design requirements for accuracy of 1 m.