摘要
Abstract
In order to improve the positioning accuracy and communication capability of downhole personnel in coal mines,Taking Heilongguan Coal Industry of Lu'an Group as the scene,a positioning communication system integrating UWB high-precision positioning and Wi-Fi 6 high-speed communication is designed and deployed.The system integrates mine used intrinsically safe type wireless base stations,KJ787 series UWB card readers,and identification cards to construct a centimeter level trajectory tracking network,combined with GIS to achieve visual management.The platform supports dual band Wi-Fi communication,APP remote monitoring,video linkage early warning,and broadcast alarm response.The testing results show that the static accuracy of the system is better than 0.3 m,the dynamic error is≤1 m,the video delay is 0.54 s,the concurrent recognition reaches 200 cards/s,and the blind spot ratio is less than 1.5%;The system passes EMC and explosion-proof certification,with MTBF≥8000 h,and has good stability and engineering feasibility;The economic analysis indicates that the cost per ton of coal is decreased by 31%compared to the traditional scheme,providing a reliable path for the intelligentization management of downhole.关键词
UWB定位/Wi-Fi 6通信/井下人员定位/智能矿井Key words
UWB positioning/Wi-Fi6 communication/downhole personnel positioning/intelligent mine分类
矿业与冶金
