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一种基于模糊逻辑的无线可充电传感器网络定向充电方案。

A Fuzzy Logic-Based Directional Charging Scheme for Wireless Rechargeable Sensor Networks.

作者信息

Ma Yuhan, Sha Chao, Wang Yue, Wang Jingwen, Wang Ruchuan

机构信息

School of Computer Science, Software and Cyberspace Security, Nanjing University of Posts and Telecommunications, Nanjing 210003, China.

出版信息

Sensors (Basel). 2024 Aug 5;24(15):5070. doi: 10.3390/s24155070.

DOI:10.3390/s24155070
PMID:39124117
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11315021/
Abstract

Wireless Power Transfer (WPT) has become a key technology to extend network lifetime in Wireless Rechargeable Sensor Networks (WRSNs). The traditional omnidirectional recharging method has a wider range of energy radiation, but it inevitably results in more energy waste. By contrast, the directional recharging mode enables most of the energy to be focused in a predetermined direction that achieves higher recharging efficiency. However, the MC (Mobile Charger) in this mode can only supply energy to a few nodes in each direction. Thus, how to set the location of staying points of the MC, its service sequence and its charging orientation are all important issues related to the benefit of energy replenishment. To address these problems, we propose a Fuzzy Logic-based Directional Charging (FLDC) scheme for Wireless Rechargeable Sensor Networks. Firstly, the network is divided into adjacent regular hexagonal grids which are exactly the charging regions for the MC. Then, with the help of a double-layer fuzzy logic system, a priority of nodes and grids is obtained that dynamically determines the trajectory of the MC during each round of service, i.e., the charging sequence. Next, the location of the MC's staying points is optimized to minimize the sum of charging distances between MC and nodes in the same grid. Finally, the discretized charging directions of the MC at each staying point are adjusted to further improve the charging efficiency. Simulation results show that FLDC performs well in both the charging benefit of nodes and the energy efficiency of the MC.

摘要

无线功率传输（WPT）已成为延长无线可充电传感器网络（WRSN）网络寿命的关键技术。传统的全向充电方法能量辐射范围更广，但不可避免地会导致更多的能量浪费。相比之下，定向充电模式能使大部分能量集中在预定方向，从而实现更高的充电效率。然而，这种模式下的移动充电器（MC）在每个方向上只能为少数节点供电。因此，如何设置移动充电器的停留点位置、其服务顺序以及充电方向，都是与能量补充效益相关的重要问题。为了解决这些问题，我们提出了一种用于无线可充电传感器网络的基于模糊逻辑的定向充电（FLDC）方案。首先，将网络划分为相邻的正六边形网格，这些网格正是移动充电器的充电区域。然后，借助双层模糊逻辑系统，获得节点和网格的优先级，动态确定移动充电器在每轮服务期间的轨迹，即充电顺序。接下来，优化移动充电器停留点的位置，以最小化移动充电器与同一网格中节点之间的充电距离总和。最后，调整移动充电器在每个停留点的离散充电方向，以进一步提高充电效率。仿真结果表明，FLDC在节点充电效益和移动充电器能量效率方面均表现良好。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f23a/11315021/858596204661/sensors-24-05070-g017.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f23a/11315021/2e4ab9532a46/sensors-24-05070-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f23a/11315021/31ccdbd117c5/sensors-24-05070-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f23a/11315021/854e4bd99fdc/sensors-24-05070-g011.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f23a/11315021/627b103d00a4/sensors-24-05070-g012.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f23a/11315021/858596204661/sensors-24-05070-g017.jpg

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