| 基于纵向激励的铁基非晶带弱磁传感器研究 |
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| 引用本文： | 于葛亮,卜雄洙,史晓君,熊长兵.基于纵向激励的铁基非晶带弱磁传感器研究[J].南京理工大学学报(自然科学版),2011,35(3). |
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| 作者姓名： | 于葛亮 卜雄洙 史晓君 熊长兵 |
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| 作者单位： | 南京理工大学机械工程学院,江苏南京,210094 |
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| 摘 要： | 为研制高性能的弱磁传感器,通过纵向激励方式,使得铁基非晶带Fe78Si9B13具有高巨磁阻抗(GM I)效应。在传感器电路设计中,RC反相振荡电路与开关管构成脉冲信号发生电路;峰值检波电路、无源低通滤波电路与AD620差分运算电路构成信号调理电路;由双运放组成的V/I转换电路作为负反馈电路。对基于GM I效应的弱磁传感器的输出进行了试验标定与数据分析。测试结果表明:在磁场-210μT至210μT范围内,灵敏度为5.7 mV/μT、线性度为0.87%,重复性为0.63%,迟滞误差为±0.36%,达到了实际的弱磁场测试要求。
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| 关 键 词： | 纵向激励 铁基非晶带 弱磁传感器 巨磁阻抗效应 |
Fe-based Amorphous Ribbon Weak Magnetic Sensor Based on Longitudinal Excitation |
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| YU Ge-liang,BU Xiong-zhu,SHI Xiao-jun,XIONG Chang-bing.Fe-based Amorphous Ribbon Weak Magnetic Sensor Based on Longitudinal Excitation[J].Journal of Nanjing University of Science and Technology(Nature Science),2011,35(3). |
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| Authors: | YU Ge-liang BU Xiong-zhu SHI Xiao-jun XIONG Chang-bing |
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| Institution: | YU Ge-liang,BU Xiong-zhu,SHI Xiao-jun,XIONG Chang-bing(School of Mechanical Engineering,NUST,Nanjing 210094,China) |
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| Abstract: | To research the weak magnetic sensor with high performance,the Fe-based amorphous ribbon Fe78Si9B13 is made to have high giant magneto impedance(GMI)effect by longitudinal excitation.In the circuit design of the sensor,the pulse excitation current circuit is made up of the RC-invertors oscillating circuit and a switch transistor;the signal conditioning circuit is composed of a peak-value detector,a passive low-pass filter circuit and a differential amplifier AD620;the feedback circuit is composed of a V/I c... |
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| Keywords: | longitudinal excitation Fe-based amorphous ribbons weak magnetic sensors giant magnetic impedance |
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