煤矿井下人员精确定位系统四最值轨迹回放方法研究

Research on playback method of four extreme values trajectory for coal mine personnel accurate positioning system

人员轨迹回放是煤矿井下人员精确定位系统的重要功能。针对煤矿精确定位系统数据量巨大,导致轨迹回放时存在计算时间长或改用读卡器轨迹回放等问题,提出了煤矿井下人员精确定位系统四最值轨迹回放方法;该方法以UWB(超宽带技术)精确数据与GIS(地理信息系统)地图为基础,考虑人员经过读卡器的不同方式,采用四最值抽稀算法,抽取左侧最大、左侧最小、右侧最大、右侧最小4个关键数据点,对轨迹回放方法进行对比。四最值轨迹回放方法对比全数据计算、区域数据计算等方法,具有计算速度快、轨迹精确等特点。

Personnel trajectory playback is an important function of the precise positioning system for underground personnel in coal mines.Aiming at the huge amount of data in the precise positioning system of coal mines,which leads to problems such as long calculation time or the use of card readers for trajectory playback,a four extreme values trajectory playback method for the precise positioning system of coal mine personnel is proposed.This method is based on UWB(Ultra Wide Band)precise data and GIS(Geographic Information System)map,considering the different ways of people passing through the card reader,the four extreme values extraction algorithm is used to extract four key data points,namely the maximum on the left,the minimum on the left,the maximum on the right and the minimum on the right,and the trajectory playback methods are compared.Compared with methods such as full data calculation and regional data calculation,the four extreme values trajectory playback method has the characteristics of fast calculation speed and accurate trajectory.