煤矿井下无线传感器网络节点三维定位算法概要VIP免费

煤矿井下无线传感器网络节点三维定位算法摘要:现有煤矿无线传感器网络节点定位存在定位精度差、功耗高等问题,提出一种基于信标节点规则部署的煤矿井下无线传感器网络节点三维定位算法,根据井下巷道特征成对部署信标节点,在定位估算时先将信标节点投影到与未知节点同一高度的水平面,再利用三边测量法进行平面定位,然后结合未知节点与信标节点的高度差即可实现三维定位。理论分析和仿真结果表明,该算法具有计算量小、通信量小、定位精度较高以及稳定性较好等特点。关键词:无线传感器网络;煤矿;三维定位;定位精度;能耗;稳定性3dlocalizationalgorithmforwirelesssensornetworksinundergroundcoalminezhuxiao.juan1*,wangjun.hao1,mengxiang.rui21.schoolofcomputerscienceandengineering,anhuiuniversityofscienceandtechnology,huainananhui232001,china;2.schoolofenergyandsafety,anhuiuniversityofscienceandtechnology,huainananhui232001,chinaabstract:mostexistingalgorithmsforwirelesssensornetworkslocalizationinundergroundcoalminehavelowaccuracyandhighcostproblems.anovel3dlocalizationalgorithmisproposedforundergroundcoalminebasedonthebeaconnodesregulardeployment.first,thebeaconnodesisdeployedaccordingtothecharactersoftheundergroundtunnel,second,thebeaconnodesandunknownnodeareprojectedontothesamehighlevelwhenlocationestimation,third,2dpositioniscalculatedbytrilateration,atlastthe3dpositionisobtainedbymeansofcombiningwiththeheightdifferencebetweenunknownnodesandbeaconnodes.theoreticalanalysisandsimulationresultsshowthatthealgorithmhaslesscalculation,lowcommunication,higherpositioningaccuracyandgoodstabilitycharacters.mostoftheexistingalgorithmsforwirelesssensornetworks(wsnlocalizationinundergroundcoalminehaveproblemsoflowaccuracyandhighcost.anew3dlocalizationalgorithmwasproposedforundergroundcoalminebasedontheregulardeploymentofbeaconnodes.first,thebeaconnodesweredeployedaccordingtothecharacteristicsoftheundergroundtunnel;second,thebeaconnodesandunknownnodewereprojectedontothesamehighlevelwhiledoinglocationestimation;third,2dpositionwascalculatedbytrilateration;atlastthe3dpositionwasobtainedbymeansofcombiningtheheightdifferencebetweenunknownnodesandbeaconnodes.thetheoreticalanalysisandsimulationresultsshowthatthealgorithmisoflesscalculation,lowcommunication,higherpositioningaccuracyandgoodstability.keywords:wirelesssensornetworks(wsn;coalmine;3dlocalization;positioningaccuracy;energyconsumption;stability0引言无线传感器网络已被应用于煤矿井下人员定位、环境监测和机电装备状态检测与定位中,由传感器采集到的数据在不知道相应位置信息的情况下,往往是没有意义的。因此研究可靠实用的煤矿井下无线传感器网络节点定位算法,不仅能进行较为精确的监控,当矿难发生时还能够提供位置信息便于及时展开救援,对煤矿的安全生产有着重要的现实意义。在煤矿井下定位算法的相关研究领域,许多的节点定位算法已被提出。文献[1]提出了一种信标节点链式部署结构下的动态接收信号强度指示(receivedsignalstrengthindication,rssi测距算法,计算巷道内实际环境下的路径衰落指数,以提高rssi测距算法对环境的适应性;文献[2]提出了基于rssi的对角差分修正定位算法,利用差分原理对测量距离进行修正,从而改善了定位精度;文献[3]将rssi测距法与切球球心法相结合,提出了接收信号强度指示与切球球心法混合定位算法(rssiandspherecentremixedlocalization,rsm;文献[4]提出了一种基于球面坐标的动态定位机制,将定位问题抽象为多元线性方程组求解问题;文献[5]将井下巷道网络分割成多个以网关为中心的分布式定位单元,当移动节点经过定位单元时,首先计算其在局部定位单元内的位置坐标,并将该位置信息通过多跳传递给网关,再由网关传送到井上计算机,由井上计算机通过坐标变换...