基于802.11n无线传感器网络的巷道人员定位技术研究  

Research on personnel positioning technology of roadway based on 802.11n wireless sensor network

作　　者：张庆华[1,2] 徐雪战[1,2] 邹云龙[1,2] 

机构地区：[1]瓦斯灾害监控与应急技术国家重点实验室,重庆400037 [2]中煤科工集团重庆研究院有限公司,重庆400037

出　　处：《中国安全生产科学技术》2016年第4期62-69,共8页Journal of Safety Science and Technology

基　　金：国家"十二五"科技支撑计划项目(2012BAK04B01);中煤科工集团有限公司科技创新基金项目(2013ZD002)

摘　　要：针对现阶段矿井人员定位系统定位精度低、成本高、可靠性差等问题,提出了一种基于802.11n无线传感器网络技术的真三维人员定位系统,该系统根据功能特征划分为现场设备管理层、系统运行监控层和地面监控管理层。工作时,定位分站将移动节点通过无线网络传输过来的位置坐标信息通过RS-485总线传输到光纤冗余网中,紧接着将位置坐标信息通过CAN现场总线传输到地面数据服务器内进行解压、分析处理和可视化显示。实验结果表明:当加权因子k取1.1时,该系统在井下巷道测试环境中的平均误差仅为1.15 m,且长期运行无故障,具有较高的定位精度和可靠性,降低了成本。Aiming at the problems of low accuracy,high cost and poor reliability of personnel positioning system in mine,a true three- dimensional personnel positioning system based on 802. 11 n wireless sensor network technology was proposed.The system can be divided into the field equipment management layer,the system operation monitoring layer and the ground monitoring management layer according to the functional characteristics. When the system works,the position coordinates information transmitted over wireless network from the mobile nodes can be transmitted to the fiber redundancy network through the RS- 485 bus by the positioning substation,then the position coordinates information can be transmitted to the ground data server through the CAN field bus to be decompressed,analyzed and visually displayed. The experimental results showed that when the weighting factor K was taken to be 1. 1,the average error of the system in the test environment of underground roadway was only 1. 15 m. The system operated for long- term without fault,and it had higher positioning accuracy,reliability and lower cost.

关 键 词：人员定位 无线传感网络 真三维定位算法 802.11n 加权质心 

分 类 号：X936[环境科学与工程—安全科学]