【摘要】 针对传统列检场存在的人员安全隐患及信息传递滞后问题,提出了一种以射频识别技术为基础的人员定位系统,以实现移动目标的精确定位.基于成本及可靠性考虑,选择LANDMARC定位算法,并利用牛顿插值法在系统边界区域动态插入虚拟节点,同时优化最近邻居标签数k的动态取值以实现算法改进.在模拟列检场实验中,LANDMARC算法的平均误差1.25m,改进后的平均误差为0.94m,定位精度提高约24.8%.模拟实验表明:改进LANDMARC算法具有更高的定位精度,可以用于列检场中列检员的跟踪定位.更多还原

【Abstract】 In view of security problems of train maintenance workers and the delayed information transfer of the traditional train inspection and service field,a kind of personnel location system is proposed based on RFID technology to locate train maintenance workers precisely.In consideration of cost and reliability,LANDMARC algorithm is proposed,and it is improved by inserting the virtual nodes in the system’s boundary region based on Newton interpolation and by optimizing the nearest neighbor tag k value dynamically.In the simulated experiment of train inspection and service field,the average error of LANDMARC algorithm is 1.25 mand the improved algorithm’s average error is 0.94 m,so the location accuracy is increased to about 24.8%.The simulation results show that the improved LANDMARC algorithm has better accuracy and it can be used to track and locate the train maintenance workers on the train inspection and service field.更多还原