一种改进的煤矿井下无线传感器网络定位算法

针对煤矿井下巷道狭长,传感器节点分布不均匀,环境恶劣,井下人员定位不明确。传统算法定位精度不高。为此,提出一种改进DV-Hop的煤矿井下节点定位方法,利用无线信号同种介质中传播速度不变性,并利用节点间数据包传送时间对未知节点的估计距离进行修正。实验结果表明,改进算法有效地提高了无线传感器网络节点的定位精度,减少了定位误差,更加适合于类似于煤矿井下场景的定位需求。

Improved Wireless Sensor Network Node Localization Algorithm of Underground Coal Mine

Coal mines str long and narrow,and the sensor nodes distribution is not uniform,thererfore,the traditional DV-Hop algorithm positioning accuracy is not high.This paper put forward an underground node localization algorithm based on improved DV-Hop algorithm.The proposed algorithm uses the node packet transmission time to correct the unknown node’s estimated distance correction for radio signals in the same medium propagation velocity invariance.The experimental results show that the improved algorithm can effectively improve the wireless sensor network node localization accuracy,and reduce the localization error.It is more suitable for the demands of coal mine underground scene localization position.