Optimization of a Passive Magnetic Relay Coil for Underground RFID Detection Systems

IF 3.7 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE journal of radio frequency identification Pub Date : 2025-11-21 DOI:10.1109/JRFID.2025.3635554

Jihan Liang;Jixuan Zhu;Bo Tao;Zhouping Yin

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引用次数: 0

Abstract

Passive magnetic relay technology offers an effective solution for enhancing the detection range of an underground low-frequency (LF) Radio Frequency Identification (RFID) system. However, the parameter optimization of relay coils based on theoretical models remains an unresolved challenge. Firstly, this work establishes an equivalent circuit model for a three-coil RFID system and derives the transmission efficiency based on the reflected impedance theory. Compared to traditional two-coil RFID systems, the passive underground RFID detection system based on magnetic relay can improve the transmission efficiency, thereby increasing its detection range. Then, a genetic algorithm is designed to optimize the radius and deployment position of the relay coil with the goal of maximizing transmission efficiency, and the rationality of the optimal relay coil design is verified through simulations. Finally, a test platform for the three-coil RFID system is constructed, and the experimental results show that the maximum detection range of the three-coil RFID system is increased by 15.23% due to the passive relay coil, while also validating the feasibility of the proposed relay coil optimization design method.

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用于地下RFID探测系统的无源磁继电器线圈优化

无源磁继电器技术为提高地下低频射频识别（RFID）系统的探测距离提供了有效的解决方案。然而，基于理论模型的继电器线圈参数优化仍然是一个未解决的挑战。首先，本文建立了三圈RFID系统的等效电路模型，并基于反射阻抗理论推导了传输效率。与传统的双线圈RFID系统相比，基于磁继电器的无源地下RFID探测系统可以提高传输效率，从而增加探测范围。然后，以传输效率最大化为目标，设计遗传算法对继电器线圈的半径和布置位置进行优化，并通过仿真验证了继电器线圈优化设计的合理性。最后搭建了三圈RFID系统的测试平台，实验结果表明，由于无源继电器线圈的存在，三圈RFID系统的最大检测距离提高了15.23%，同时也验证了所提出的继电器线圈优化设计方法的可行性。

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 radio frequency identification

CiteScore

5.70

自引率

0.00%

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