Enhanced detection performance based on a differential ME sensor with strong suppression of vibration interference

IF 3.5 2区物理与天体物理 Q2 PHYSICS, APPLIED

Applied Physics Letters Pub Date : 2024-10-28 DOI:10.1063/5.0232400

Zhaoqiang Chu, Yanpan Wang, Zelin Du, Jianyu Cui, Zhonghui Yu

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引用次数: 0

Abstract

Magnetoelectric (ME) sensors have enormous potential for detecting weak magnetic fields because of their high sensitivity, low power consumption, compact size and, low cost. However, inevitable vibration interference limits their application in practical environments, especially in the case of mobile platform mounting. Here, we propose a differential ME sensor, consisting of PZT macro-fiber composites (MFCs) and Metglas laminates. The differential ME sensor has two output terminals with weak mutual mechanical coupling and works in longitudinal vibration mode. MFC cores are polarized in parallel mode to guarantee their consistency of electric characteristics and reversed bias field is provided by attached magnets. Experimental results show that the differential-mode response amplitudes have a gain of −17.6 dB for low-frequency vibration at 2 Hz and ∼6.2 dB for an applied magnetic field at 3 Hz, in comparison with the single-ended mode. In addition, our proposed ME sensor also has a low inherent equivalent magnetic noise of 18.3 pT/√Hz at 1 Hz. Finally, a target detection experiment in the presence of heavy lab noise and strong vibration interference is conducted and the improved detection performance of the proposed differential ME sensor is proved.

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基于能有效抑制振动干扰的差分 ME 传感器的更高探测性能

磁电（ME）传感器具有灵敏度高、功耗低、体积小和成本低的特点，在探测弱磁场方面具有巨大的潜力。然而，不可避免的振动干扰限制了其在实际环境中的应用，尤其是在移动平台安装的情况下。在此，我们提出了一种由 PZT 宏纤维复合材料 (MFC) 和 Metglas 层压板组成的差分 ME 传感器。差分 ME 传感器有两个相互机械耦合较弱的输出端，在纵向振动模式下工作。MFC 芯采用并联极化模式，以保证其电气特性的一致性，反向偏置场由附加磁铁提供。实验结果表明，与单端模式相比，差分模式在 2 Hz 低频振动下的响应幅度增益为 -17.6 dB，在 3 Hz 外加磁场下的响应幅度增益为 ∼6.2 dB。此外，我们提出的 ME 传感器在 1 Hz 时的固有等效磁噪声也很低，仅为 18.3 pT/√Hz。最后，我们进行了在实验室噪声和强振动干扰下的目标检测实验，证明了所提出的差分 ME 传感器检测性能的提高。

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

Applied Physics Letters 物理-物理：应用

CiteScore

6.40

自引率

10.00%

发文量

1821

审稿时长

1.6 months

期刊介绍： Applied Physics Letters (APL) features concise, up-to-date reports on significant new findings in applied physics. Emphasizing rapid dissemination of key data and new physical insights, APL offers prompt publication of new experimental and theoretical papers reporting applications of physics phenomena to all branches of science, engineering, and modern technology. In addition to regular articles, the journal also publishes invited Fast Track, Perspectives, and in-depth Editorials which report on cutting-edge areas in applied physics. APL Perspectives are forward-looking invited letters which highlight recent developments or discoveries. Emphasis is placed on very recent developments, potentially disruptive technologies, open questions and possible solutions. They also include a mini-roadmap detailing where the community should direct efforts in order for the phenomena to be viable for application and the challenges associated with meeting that performance threshold. Perspectives are characterized by personal viewpoints and opinions of recognized experts in the field. Fast Track articles are invited original research articles that report results that are particularly novel and important or provide a significant advancement in an emerging field. Because of the urgency and scientific importance of the work, the peer review process is accelerated. If, during the review process, it becomes apparent that the paper does not meet the Fast Track criterion, it is returned to a normal track.