一种基于UWB的变电站运维人员定位系统

An Operation and Maintenance Personnel Positioning System of Substation Based on UWB

为了防止变电站工作人员误入危险区域,文章设计了一种基于UWB(Ultra WideBand)的变电站运维人员定位系统。该系统采用基于时间测距协议中的双边双程测距,利用基站间抢占标签信号的时间差对各个基站进行依次测距,在上位机中每间隔固定时间对标签进行一次定位。与以往基于时间的系统相比,本系统不要求设备时间同步,并能够有效减少时钟漂移的影响,降低系统功耗。实测结果表明,测距精度误差不大于10cm,定位精度误差不超过10cm,能够满足变电站运维人员追踪定位系统的厘米级精度要求。

In order to prevent the substation workers from straying into the danger area,a UWB based substation operation and maintenance personnel positioning system is designed in this paper.The system adopts double-sided two-way ranging based on time distance measurement protocol.It uses the time difference between base stations to preempt the label signal to measure the distance of each base station in turn,and locates the label once every fixed time in the upper computer.Compared with previous time-based systems,this system does not require time synchronization of equipment,and can effectively reduce the impact of clock drift and reduce system power consumption.The measured results show that the ranging accuracy is no more than 10 cm and the positioning accuracy is no more than 10 cm.