一种矿用智能精确人员定位系统设计

摘要

In view of problems of difficult deployment and high cost caused by a lot of wired communication cable and low intelligence of request for help in emergency existed in current accurate personnel positioning system of coal mine underground,an intelligent accurate personnel positioning system for mine was designed.In the system,personnel label position is acquired exactly by use of time of arrival ranging method based on ultra wide band positioning technology,personnel label information collected by card reader is uploaded to substation through data concentrator by use of LoRa wireless communication technology,and information of request for help is sent to manager automatically through emergency processing plan when persons lose ability of triggering help button manually.The test results show that the system can achieve reliable wireless data transmission with bit error rate of less than 5％ within 2 km,whose positioning accuracy is 1 m,and automatic alarm rate is above 93.5％ when persons lose ability of triggering help button manually.%针对现有煤矿井下精确人员定位系统采用大量有线通信线缆导致部署困难、成本高及紧急情况求援时智能化程度低等问题,设计了一种矿用智能精确人员定位系统.该系统中读卡器采用基于超宽带定位技术的到达时间测距方法准确获取人员标签位置,数据集中器通过LoRa无线通信技术收集读卡器采集的人员标签信息并上传至分站,地面监控中心根据分站上传的数据,在井下人员失去手动触发求救按钮能力时,通过紧急状况处理方案自动报警并通知管理人员.实测结果表明,该系统定位精度为1m,可在2 km以内实现误码率小于5％的无线数据可靠传输,在井下人员失去手动触发求救按钮能力时自动报警率达93.5％以上.