基于UWB和RFID多源融合的煤矿人员精准定位系统设计

Design of Coal Mine Personnel Precise Positioning System Based on UWB and RFID Multi-source Fusion

为了突破应用在煤矿中的基于RFID、Zigbee、WiFi和蓝牙等无线通信技术的人员定位系统只能进行区域定位,定位精度差的技术瓶颈,提出了一种基于超宽带(UWB)无线载波通信技术与射频识别(RFID)技术相结合的多源融合煤矿人员精准定位系统设计方案。本系统精准定位部分采用了飞行时间法(TOF)的双向测距技术,通过测量UWB无线信号在定位分站与标识卡(标签)之间往返的飞行时间来计算距离。实现了人员重要场所的精准定位和非重要场所的区域定位。通过试验验证:精准定位测距可达400 m以上,直线静态测距误差小于0.3 m,区域定位覆盖距离为30 m以内。

In order to break through the technical bottleneck that the personnel positioning system based on RFID,Zigbee,WiFi,Bluetooth and other wireless communication technologies used in coal mines can only carry out regional positioning and has poor positioning accuracy,a design scheme of multi-source fusion coal mine personnel precise positioning system based on UWB wireless carrier communication tech⁃nology and RFID technology is proposed.The precise positioning part of the system uses the time-of-flight(TOF)two-way ranging technology to calculate the distance by measuring the flight time of the UWB wire⁃less signal between the positioning substation and the identification card(label).The precise positioning of personnel important places and the regional positioning of non-important places are realized.The experi⁃mental verification shows that the precise positioning ranging can reach more than 400 m,the static linear ranging error is less than 0.3 m,and the regional positioning coating cover distance is less than 30 m.