Effects of Amplitude and Frequency of the Modulation Field on the Sensitivity for Low-Frequency Magnetic Field in Magnetoelectric Sensors

被引：3
作者：
Sun, Xuan [1 ]
Wu, Jingen [2 ]
Liang, Xianfeng
Du, Yongjun
Xu, Yiwei
Qu, Yuhan
Guan, Mengmeng
Huang, Hui
Li, Fuchao
Liu, Sujie
Ju, Dengfeng
Wang, Zhiguang
Hu, Zhongqiang [2 ]
Guo, Jinghong
Liu, Ming [2 ]
机构：
[1] Sun Yat Sen Univ, Sch Elect & Informat Technol, Guangzhou, Peoples R China
[2] Xi An Jiao Tong Univ, Sch Elect Sci & Engn, Xian, Peoples R China
来源：
IEEE SENSORS JOURNAL | 2023年 / 23卷 / 12期
关键词：
Sensors; Frequency modulation; Magnetic fields; Magnetic sensors; Frequency conversion; Magnetostriction; Magnetic resonance; low-frequency magnetic field detection; nonlinear magnetoelectric (ME) effect; quasi-static analysis;
D O I：
10.1109/JSEN.2023.3268741
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Magnetoelectric (ME) sensors based on piezoelectric/ferromagnetic composites have been investigated extensively due to their resonance-enhanced ME coupling effect and high sensitivity for magnetic field, especially at resonant frequency. However, the sensitivity drops rapidly when the frequency drifts away from resonance, making it unsuitable for low-frequency applications. Frequency modulation has been proposed as an effective method to up-convert the frequency of the desired signal into the mechanical resonance. In this work, we study the optimized amplitude and frequency of the modulation field, which improve the sensitivity at low frequency by two orders of magnitude without increasing the noise level. Magnetic field of 200 pT is detected at 10 Hz with a near-flat frequency response in the range of 1-100 Hz, showing promising potential for low-frequency applications in smart grid and renewable energy.
引用
收藏
页码：12695 / 12701
页数：7
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