井下无线传感器网络定位DV-Hop改进算法  

Improved DV-Hop Wireless Sensor Networks Localization Algorithm Underground of Coal Mine

作　　者：王鸿铭[1] 张麦玲[1] 吴延昌[1] 

机构地区：[1]平顶山工业职业技术学院,河南平顶山467000

出　　处：《煤矿机械》2014年第9期15-18,共4页Coal Mine Machinery

基　　金：河南省高等学校青年骨干教师资助计划项目(2012GGJS-235)

摘　　要：针对煤矿井下环境复杂,传统DV-Hop节点定位算法无法满足无线传感器网络定位需求的问题,设计了一种改进的DV-Hop算法,引入分级节点和扩展信标节点,采用分级定位,通过已定位的未知节点作为信标节点参与定位运算,利用三角定理和1跳距离对未知节点与信标节点之间的跳段距离进行修正。仿真结果表明:改进算法有效提高了节点的定位精度,能够满足井下传感器节点的定位需要。In the complicated environment underground of coal mine, the traditional DV-Hop wireless sensor networks localization algorithm was not able to meet the localization demands, in order to enhance its localization accuracy in such environment, this paper introduced the terms of the leveled node and the extended beacon node,and used the method of leveled localization, which let the unknowh node that had, been located join the subsequent unknown nodes calculation, then modified the hops distance between the unknown node and beacon by triangular theorem and one hop distance. The improved algorithm mentions in this paper, has been proved which can enhance the localization accuracy effectively and can be used in the positioning of underground sensor node.

关 键 词：DV-HOP算法 分级节点 扩展信标节点 三角定理 无线传感器网络 

分 类 号：TD655[矿业工程—矿山机电] TP39[自动化与计算机技术—计算机应用技术]