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首页> 外文期刊>Magnetics, IEEE Transactions on >Recent Advances of Pico-Tesla Resolution Magneto-Impedance Sensor Based on Amorphous Wire CMOS IC MI Sensor
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Recent Advances of Pico-Tesla Resolution Magneto-Impedance Sensor Based on Amorphous Wire CMOS IC MI Sensor

机译:基于非晶线CMOS IC MI传感器的Pico-Tesla分辨率磁阻传感器的最新进展

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摘要

We have developed sensitive micro magnetic sensors referred to as MI sensors based on magneto-impedance effect in amorphous wires and CMOS IC electronic circuits providing a sharp-pulse excitation. Micro sized MI-HIC chips have been in mass production of electronic compasses by Aichi Steel Corp. since 2002 for mobile phones and since 2010 for smart phones. Recently we have realized pico-Tesla ($10^{-8}$ Oe) resolution for micro MI sensors making use of ultralow intrinsic magnetic noise in amorphous wires with the pulse magnetoimpedance effect. The pico-Tesla MI sensor is useful especially for bio-magnetic measurements without any magnetic shielding at room temperature. In order to avoid a risk of traffic accident due to noise reduction electric vehicles, an alert system for the pedestrians having a smart phone would be useful, if pico-Tesla MI sensor were built in the smart phones.
机译:我们已经开发出了基于MI传感器的灵敏微磁传感器,它被称为MI传感器,它基于非晶导线和提供尖脉冲激励的CMOS IC电子电路中的磁阻抗效应。自2002年以来,爱知钢铁公司就已开始大规模生产用于电子罗盘的MI-HIC芯片,并于2010年开始用于智能手机。最近,我们已经实现了微MI传感器的pico-Tesla($ 10 ^ {-8} $ Oe)分辨率,它利用非晶态导线中的超低固有磁噪声和脉冲磁阻效应。 pico-Tesla MI传感器特别适用于在室温下没有任何磁屏蔽的生物磁测量。为了避免由于降低噪音的电动汽车而导致交通事故的风险,如果在智能电话中内置了pico-Tesla MI传感器,则针对具有智能电话的行人的警报系统将非常有用。

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