基于误差修正距离约束的深井巷道目标定位算法  

Study on target location algorithm of deep mine roadway with distance constraint based on error correction

作　　者：余修武[1,2] 张可[1] 周利兴 张枫[1,2] 胡沐芳 刘琴[1] 

机构地区：[1]南华大学环境保护与安全工程学院,湖南衡阳421001 [2]中钢集团马鞍山矿山研究院有限公司金属矿山安全与健康国家重点实验室,安徽马鞍山243000

出　　处：《中国安全生产科学技术》2017年第5期68-72,共5页Journal of Safety Science and Technology

基　　金：金属矿山安全与健康国家重点实验室开放基金项目(2016-JSKSSYS-04);江西省自然科学基金(20122BAB201050);南华大学环境与安全工程学院研究生创新课题(2017YCXXM08)

摘　　要：针对基于距离约束的井下定位算法本身存在的近似误差,尤其在锚点附近定位误差较大的问题,通过改进算法,引入1个误差系数ω,并以此为依据,来选取误差较小的边作为定位信息来源,同时引入修正系数ε来进行修正分割点,使其更加接近于垂足,以此来减少定位的误差。仿真结果表明:改进算法的平均定位误差远小于原定位算法,约为1/4;改进算法的最大误差小于1.5 m、最小误差为0.2 m;改进算法不仅定位精度优于原定位算法,且计算复杂度较低,更加适用于深井环境定位。Aiming at the problem of approximation error in underground target location algorithm based on distance con- straint, especially the large location error around the anchor point, an error coefficient to was introduced to improve the algo- rithm. On this basis, the edges with smaller error were selected as the information source of location. Meanwhile, a correc- tion coefficient e was introduced to correct the division point, which made it closer to the foot of perpendicular, so as to re- duce the location error. The simulation results showed that the average location error of the improved algorithm was much less than the original location algorithm, about 1/4 times. The maximum error of the improved algorithm was less than 1.5 m, and the minimum error was 0.2 m. The improved algorithm has a better location accuracy than the original location algo- rithm, with a lower computation complexity, so itg more suitable for the location in deep mine environment.

关 键 词：无线传感器网络 深井定位 接收信号强度指示 距离约束 误差修正 

分 类 号：TP301.6[自动化与计算机技术—计算机系统结构] X936[自动化与计算机技术—计算机科学与技术]