煤矿工作面定位WSN的部署与能耗分析

Placement of positioning WSN in coal face and energy consumption analysis

将工作面移动目标定位网络设计为二维线性无线传感器网络,提出了煤矿工作面定位无线传感器网络(PWSN)模型.分析了理想PWSN情况下的能量消耗情况和最优中继节点数目,探讨了一般PWSN的节点部署和下一跳选择方法.为了延长网络寿命,在选择下一跳时应综合考虑单跳能耗最小和能耗均衡两个因素.提出了利用定位目标的运动模式进行位置预测,结合变距节点部署方法来进一步提高PWSN的寿命.仿真实验表明:所提出的方法克服了PWSN没有锚节点和通信空间变化带来的挑战,能够显著节省网络能耗.

Taking the mobile object positioning networks in coal workface as a 2-D linear wire- less sensor networks, a new Positioning Wireless Sensor Networks （PWSN） model was intro- duced. The energy consumption and optimal relay number in ideal PWSN were analyzed and the node placement and next hop selection in general PWSN were also discussed. To prolong the network lifetime one must make equilibrium between minimum single-hop energy consump- tion and balanced consumption in different nodes. Besides, we could predicate object＇s location through its moving mode and place nodes with changeable spacing to extend the lifetime of the network further. The simulation experiment results show that the proposed method can resolve such challenges as having no anchor nodes and changing communication spaces, so the energy consumption can get a remarkable saving.