国外巨磁阻抗传感器检测电路技术的发展动态
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国防科学技术大学机电工程与自动化学院长沙410073

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TH73

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国家自然科学基金(91320202)项目资助


Advances in detection circuit of magnetic sensors based on giant magnetoimpedance at abroad
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College of Mechatronics Engineering and Automation, National University of Defense Technology, Changsha 410073, China

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    摘要:

    基于非晶态合金材料巨磁阻抗(GMI)效应和非对称巨磁阻抗(AGMI)效应磁传感器是近20年来磁传感器技术领域的研究热点之一。一些国外学者认为非晶态合金材料适合于制作能同时满足分辨力高、响应速度快、功耗低等要求的微磁传感器。然而,迄今为止,国外研发的绝大多数高分辨力GMI磁传感器仍停留在原理样机阶段,其主要技术指标甚至低于商品化各向异性磁阻(AMR)和巨磁电阻(GMR)磁传感器。简要叙述了非晶态合金材料的GMI效应和退火处理对GMI效应的影响,重点介绍了国外研发的各种不同类型的基于非晶丝(带)的GMI磁探头、模拟信号检测电路及其参考性能指标,并探讨了研发高灵敏度GMI磁传感器的关键技术。

    Abstract:

    The magnetic sensors based on giant magnetoimpedance (GMI) and asymmetrical giant magnetoimpedance (AGMI) effects of amorphous alloy materials are one of the research hot spots in the magnetic sensor technology field over the past two decades. Amorphous alloy material has been believed to be the material suitable for developing the micro magnetic sensors with high resolution, low power consumption and fast response speed. However, up to now most of the GMI sensors with high resolution developed at abroad are at the preindustrial prototype stage, and their basic performance specifications are inferior to the commercial AMR and GMR magnetic sensors. This paper briefly describes the influence of the GMI effect in amorphous alloy material and annealing processing on GMI effect. Then, the paper emphatically introduces various types of amorphous wires and ribbons based GMI magnetic sensors developed abroad, analog signal detection circuits and their reference performance specifications. Finally, the key techniques for developing high sensitivity GMI magnetic sensors are investigated with an outlook of future research in this field.

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潘仲明,周晗,张大厦,张文娜.国外巨磁阻抗传感器检测电路技术的发展动态[J].仪器仪表学报,2017,38(4):781-793

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  • 在线发布日期: 2017-07-19
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