{"title":"EMR Safety in Multiple Wireless Chargers Powered IoT Networks","authors":"Jiaxuan Li;Xilong Liu;Fuyong Ma;Nirwan Ansari","doi":"10.1109/LWC.2024.3503762","DOIUrl":null,"url":null,"abstract":"In order to actualize maintenance-free and energy-sustainable Internet of Things (IoT) networks, far-field wireless charging has been prevalently applied to power the IoT devices (IoTDs). However, electromagnetic radiation (EMR) safety becomes the increasing concern when multiple wireless chargers simultaneously power surrounding IoTDs. In this letter, we derive accurate Non-Linear Superposition models for both specific absorption ratio (SAR) and wireless charging utility in scenarios with multiple wireless chargers. Considering EMR safety, we formulate the overall wireless charging utility maximization problem based on our proposed models. We then propose the tiMe domaIn sampliNg safE chaRging (MINER) algorithm to efficiently solve it. Hardware-based experiments have been conducted to validate the effectiveness of our proposed models and algorithm.","PeriodicalId":13343,"journal":{"name":"IEEE Wireless Communications Letters","volume":"14 2","pages":"395-399"},"PeriodicalIF":5.5000,"publicationDate":"2024-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"IEEE Wireless Communications Letters","FirstCategoryId":"94","ListUrlMain":"https://ieeexplore.ieee.org/document/10759692/","RegionNum":3,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"COMPUTER SCIENCE, INFORMATION SYSTEMS","Score":null,"Total":0}
引用次数: 0
Abstract
In order to actualize maintenance-free and energy-sustainable Internet of Things (IoT) networks, far-field wireless charging has been prevalently applied to power the IoT devices (IoTDs). However, electromagnetic radiation (EMR) safety becomes the increasing concern when multiple wireless chargers simultaneously power surrounding IoTDs. In this letter, we derive accurate Non-Linear Superposition models for both specific absorption ratio (SAR) and wireless charging utility in scenarios with multiple wireless chargers. Considering EMR safety, we formulate the overall wireless charging utility maximization problem based on our proposed models. We then propose the tiMe domaIn sampliNg safE chaRging (MINER) algorithm to efficiently solve it. Hardware-based experiments have been conducted to validate the effectiveness of our proposed models and algorithm.
期刊介绍：
IEEE Wireless Communications Letters publishes short papers in a rapid publication cycle on advances in the state-of-the-art of wireless communications. Both theoretical contributions (including new techniques, concepts, and analyses) and practical contributions (including system experiments and prototypes, and new applications) are encouraged. This journal focuses on the physical layer and the link layer of wireless communication systems.
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