基于UWB技术的隧道人员定位系统及精度研究

Research on Tunnel Personnel Positioning System and Accuracy Based on UWB Technology

由于隧道施工现场环境复杂,测距信号易受到噪声、遮挡等干扰因素影响,导致人员定位系统定位精度不高,一旦发生事故,系统无法准确判断被困人员的数量和具体位置。通过对西安外环高速公路白鹿原隧道人员定位系统进行测试试验,笔者提出在传统三边定位算法的基础上结合质心算法,实验结果表明,改进后的算法定位精度比三边定位算法提高了一倍。

Because of the complex environment of the tunnel construction site,the location signal is easily affected by noise,occlusion and other interference factors,resulting in low positioning accuracy of the personnel positioning system.Once an accident occurs,the system can not accurately determine the number and specific location of the trapped personnel.By testing the personnel location system of Bailuyuan tunnel of Xi'an outer ring expressway,the author proposes a centroid algorithm based on the traditional trilateral location algorithm.The experimental results show that the location accuracy of the improved algorithm is twice as high as that of the trilateral location algorithm.