煤矿现场人员二维精确定位方法  

Two-dimensional precise positioning method of coal mine field personnel

作　　者：温贤培 WEN Xianpei(China Coal Technology and Engineering Group Chongqing Research Institute,Chongqing 400039,China)

机构地区：[1]中煤科工集团重庆研究院有限公司,重庆400039

出　　处：《煤矿安全》2023年第1期225-229,共5页Safety in Coal Mines

基　　金：中煤科工集团重庆研究院有限公司自立重点研发科研资助项目(2021ZDXM01);中煤科工集团重庆研究院有限公司创新引导资助项目(2021YBXM01)。

摘　　要：针对煤矿现场TOF二维精确定位定位速度慢的问题,提出了一种TOF结合TDOA的二维定位方法以满足煤矿现场快速定位的需求。定位前将1个主基站和3个从基站进行分组负责1块区域二维定位,标识卡在区域时只需通过1次DS-TWR测距就能够测量出4个基站与标识卡距离,在进行DS-TWR测距同时就能利用时间戳实现UWB无线时钟同步,任选3个基站与标识卡测距距离即可实现二维定位,通过随机组合可得到4组二维坐标数据,将4组数据进行卡尔曼滤波可得到更精准二维坐标数据。煤矿现场TOF结合TDOA二维精确定位方法具有定位速度快、定位精度高、定位流程简便等优点。Aiming at the slow speed of two-dimensional accurate positioning of TOF in coal mine sites, a two-dimensional positioning method based on TOF combined with TDOA was proposed to meet the needs of rapid localization in coal mine sites.Before positioning, a master base station and three slave base stations are grouped to be responsible for two-dimensional positioning of an area. When the identification card is in the area, the distance between the four base stations and the identification card can be measured by only one DS-TWR ranging. At the same time, TWR can use time stamp to realize UWB wireless clock synchronization. Optional three base stations and identification card ranging distance can realize two-dimensional positioning. Through random combination, four sets of two-dimensional coordinate data can be obtained. Kalman filtering can obtain more accurate two-dimensional coordinate data. The TOF combined with TDOA two-dimensional precise positioning method has the advantages of fast positioning speed, high positioning accuracy, and simple positioning process.

关 键 词：人员定位系统 时钟同步 时间戳 二维定位 TDOA DS-TWR 

分 类 号：TD676[矿业工程—矿山机电]