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Energy-Efficient Cluster Management Using a Mobile Charger for Solar-Powered Wireless Sensor Networks.
Sensors ( IF 3.9 ) Pub Date : 2020-06-30 , DOI: 10.3390/s20133668
Youngjae Son 1 , Minjae Kang 2 , Younghyun Kim 3 , Ikjune Yoon 4 , Dong Kun Noh 1
Affiliation  

In solar-powered wireless sensor networks (SP-WSNs), sensor nodes can continuously harvest energy to relieve the energy constraint problem in battery-powered WSNs. With the advent of wireless power transmission (WPT) technology, the nodes can be charged remotely if the energy harvested is insufficient. However, even in SP-WSNs with WPT, an energy imbalance problem is observed, in which the energy consumption of the nodes around a sink node increases abnormally if the sink node is stationary. To solve this problem, recent studies have been conducted using a mobile sink node instead of a stationary one. Generally, a clustering scheme is used for the efficient utilization of a mobile sink. However, even in the case of mobile sinks, it is still necessary to minimize the energy burden of the cluster heads and their surrounding nodes. In this study, we propose a scheme that mitigates the energy imbalance problem of SP-WSNs by using a WPT-capable mobile sink and an efficient clustering scheme. In the proposed scheme, the energy imbalance is minimized by electing the cluster heads effectively after considering the energy state of the nodes, and by enabling the sink node to charge the energy of the cluster heads while collecting data from them. Consequently, this scheme allows the sink node to collect more data with fewer blackouts of the sensor nodes.

中文翻译:

使用移动充电器对太阳能无线传感器网络进行节能集群管理。

在太阳能无线传感器网络(SP-WSN)中,传感器节点可以不断收集能量,以缓解电池供电WSN中的能量约束问题。随着无线电力传输(WPT)技术的出现,如果收集的能量不足,则可以对节点进行远程充电。但是,即使在具有WPT的SP-WSN中,也观察到能量不平衡问题,如果接收器节点固定,则接收器节点周围的节点的能耗会异常增加。为了解决这个问题,最近的研究是使用移动宿节点而不是固定宿节点进行的。通常,集群方案用于有效利用移动宿。但是,即使在移动接收器的情况下,仍然有必要使簇头及其周围节点的能量负担最小化。在这个研究中,我们提出了一种方案,该方案通过使用支持WPT的移动接收器和有效的群集方案来缓解SP-WSN的能量不平衡问题。在所提出的方案中,通过在考虑节点的能量状态之后有效地选择簇头,以及通过使宿节点能够在从簇头收集数据的同时为簇头的能量充电,来使能量不平衡最小化。因此,该方案允许宿节点以更少的传感器节点停电收集更多数据。并且通过使宿节点能够在从簇头收集数据的同时为簇头的能量充电。因此,该方案允许宿节点以更少的传感器节点停电收集更多数据。并且通过使宿节点能够在从簇头收集数据的同时为簇头的能量充电。因此,该方案允许宿节点以更少的传感器节点停电收集更多数据。
更新日期:2020-06-30
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