Safeguarding Humans From Indoor Wireless Powering via Radar Detection

IF 3 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Journal of Electromagnetics RF and Microwaves in Medicine and Biology Pub Date : 2024-08-29 DOI:10.1109/JERM.2024.3447469

Pouya Mehrjouseresht;Oluwatosin J. Babarinde;Vladimir Volski;Alexander Ye. Svezhentsev;Dominique M. M.-P. Schreurs

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引用次数: 0

Abstract

Ensuring the safety of electromagnetic exposure stands as an important concern in wireless power transfer (WPT) systems. This work proposes a distributed Fusion Radar WPT (FRWPT) system designed to maintain safe Electric Field Amplitude (EFA) levels at specific locations detected by the radar, primarily where an individual is present. This approach allows for higher EFA in areas without the person, thus optimizing overall power utilization within the system. Also, the radar's ability to detect a person's velocity allows for projecting the person's upcoming location to ensure safety in advance. We introduce an algorithm including power weighting factors for controlling power to not only mitigate dangerous radiation but also maximize power utilization. One significant challenge is the estimation of EFA considering multipath propagation, a common issue in indoor environments. To overcome this, we explore the indoor EFA distribution and suggest a simulation-based method for EFA estimation, taking into account the amplifying effect of the human body on EFA. Experimental results demonstrate that the system successfully maintains EFA below a predefined threshold across various human locations. Moreover, these experiments highlight the system's capability to maximize power utilization ratio (PUR), achieving a value exceeding 50%.

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通过雷达探测保护人类免受室内无线供电

确保电磁暴露的安全性是无线电力传输（WPT）系统中的一个重要问题。这项工作提出了一种分布式融合雷达WPT （FRWPT）系统，旨在在雷达检测到的特定位置（主要是个人存在的地方）保持安全的电场振幅（EFA）水平。这种方法允许在没有人员的区域实现更高的EFA，从而优化系统内的整体功率利用率。此外，雷达探测人的速度的能力允许预测人即将到来的位置，以确保提前安全。提出了一种包含功率加权因子的功率控制算法，既能减轻危险辐射，又能最大限度地提高功率利用率。一个重要的挑战是考虑多径传播的EFA估计，这是室内环境中的一个常见问题。为了克服这一问题，我们探索了室内EFA分布，并提出了一种基于模拟的EFA估计方法，考虑了人体对EFA的放大效应。实验结果表明，该系统成功地将EFA维持在预定义的阈值以下。此外，这些实验突出了系统最大化功率利用率（PUR）的能力，实现了超过50%的值。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

IEEE Journal of Electromagnetics RF and Microwaves in Medicine and Biology ENGINEERING, ELECTRICAL & ELECTRONIC-

CiteScore

5.80

自引率

9.40%

发文量