南京理工大学学报（自然科学版）2011，Vol.35Issue(3)：338-342,5.
基于纵向激励的铁基非晶带弱磁传感器研究
Fe-based Amorphous Ribbon Weak Magnetic Sensor Based on Longitudinal Excitation
于葛亮 1卜雄洙 1史晓君 1熊长兵1
作者信息
- 1. 南京理工大学机械工程学院,江苏南京210094
- 折叠
摘要
Abstract
To research the weak magnetic sensor with high performance, the Fe-based amorphous ribbon Fe78 Si9B13 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 converting circuit based on a dual operational amplifiers. The output of the weak magnetic sensor based on the GMI effect is experimentally calibrated and analyzed on data. The test results show: in the magnetic field from -210μT to 210μT, the sensitivity is 5.7 mV/μT,the linearity is 0.87％ ,the repeatability is 0.63％ and the hysteresis is +0.36％,which attains the test requirement of a weak magnetic field.关键词
纵向激励/铁基非晶带/弱磁传感器/巨磁阻抗效应Key words
longitudinal excitation/ Fe-based amorphous ribbons/ weak magnetic sensors/ giant magnetic impedance分类
信息技术与安全科学引用本文复制引用
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):338-342,5.
