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MNVPCS: Multinode Virtual-Point–Based Charging Scheme to Prolong the Lifetime of Wireless Rechargeable Sensor Networks
The Computer Journal ( IF 1.4 ) Pub Date : 2019-11-17 , DOI: 10.1093/comjnl/bxz110
Hong-Yi Chang, Zih-Huan Hang, Yih-Jou Tzang

Wireless-charging technology can utilize a mobile wireless charging vehicle (WCV) to rescue dying nodes by supplementing their remaining energy, and using WCVs in this way forms wireless rechargeable sensor networks (WRSNs). However, a WCV in a WRSN encounters several challenges, collectively called the optimized charging problem. This problem involves a set of sensor nodes randomly distributed on the ground for which the WCV must determine an appropriate travel path to charge the sensor nodes. Because these sensor nodes have different workloads, they exhibit different energy consumption profiles over time. Resolving the above-mentioned problem requires the determination of the priority of charging the sensor nodes based on the order in which they are expected to die and subsequently finding the most efficient path to charge the sensor nodes such that sensor death is avoided for as long as possible. Furthermore, the most efficient placement of the charging point needs to be considered when planning the charging path. To address this, the proposed multinode virtual point-based charging scheme (MNVPCS) considers both the planning of an efficient charging and the best location for the charging point. Experimental results show that MNVPCS can improve the lifetime of the entire WRSN and substantially outperform other methods on this measure.

中文翻译:

MNVPCS:基于多节点虚拟点的充电方案,可延长无线充电传感器网络的使用寿命

无线充电技术可以利用移动无线充电车(WCV)来补充垂死的节点,以补充其剩余能量,并以此方式使用WCV形成无线可充电传感器网络(WRSN)。但是,WRSN中的WCV遇到了一些挑战,统称为优化充电问题。此问题涉及一组随机分布在地面上的传感器节点,WCV必须为此确定一个合适的行进路径以对传感器节点充电。由于这些传感器节点具有不同的工作负荷,因此随着时间的推移,它们展现出不同的能耗分布。要解决上述问题,需要根据传感器节点预期死亡的顺序来确定对传感器节点充电的优先级,并随后找到对传感器节点充电的最有效路径,从而尽可能避免传感器死亡。可能。此外,在规划充电路径时,需要考虑充电点的最有效放置。为了解决这个问题,建议的基于多节点虚拟点的计费方案(MNVPCS)既考虑了有效计费的规划,又考虑了计费点的最佳位置。实验结果表明,MNVPCS可以改善整个WRSN的寿命,并且在此方面明显优于其他方法。规划充电路径时,需要考虑充电点的最有效放置。为了解决这个问题,提出的多节点基于虚拟点的计费方案(MNVPCS)既考虑了有效计费的规划,又考虑了该计费点的最佳位置。实验结果表明,MNVPCS可以改善整个WRSN的寿命,并且在此方面明显优于其他方法。规划充电路径时,需要考虑充电点的最有效放置。为了解决这个问题,提出的多节点基于虚拟点的计费方案(MNVPCS)既考虑了有效计费的规划,又考虑了该计费点的最佳位置。实验结果表明,MNVPCS可以改善整个WRSN的寿命,并且在此方面明显优于其他方法。
更新日期:2019-11-17
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