Magnetic Detector Based on GMI Effect of Amorphous Wire

Shuang Cheng Wei; Jia Hao Deng; Chao Han; Yu Ying Yang; Jing Cui

doi:10.4028/www.scientific.net/AMR.591-593.1160

Paper Titles

Spectral-Domain Optical Coherence Tomography for Material Detection
p.1139

The Analysis of Fracture Mechanics on Self-Healing Composite Materials with Microcapsules
p.1143

Nonlinear Viscoelastic Analysis of Double Base Propellant
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Adaptive Control of Magnetic Drive Actuator for Laser Cutting
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Magnetic Detector Based on GMI Effect of Amorphous Wire
p.1160

Analysis of Wireless Energy Transfer System Using Magnetic Resonant Coupling
p.1164

Receiver Operating Characteristic for Diagnosis of Wine Quality by Bayesian Network Classifiers
p.1168

Design of a Servo Controller for Modularized Flexible Joint with Integrated Torque Sensors Based on SOPC
p.1174

A Novel Method for Alignment Calibration of IMU and Doppler Sensors
p.1178

HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 591-593Magnetic Detector Based on GMI Effect of Amorphous...

Magnetic Detector Based on GMI Effect of Amorphous Wire

Abstract:

The giant magneto-impedance (GMI) effect of amorphous wire and its affecting factors were analyzed. Magnetic impedance (MI) element was designed with a special structure. So the difficulties of complex negative feedback circuit and winding double circuits on amorphous wire were solved. High frequency current pulse generator, signal preprocessing circuit and digital signal processing module were designed. Thus a low magnetic field detector was realized. The sensor and the detector were tested in laboratory. The experiment results proved that the sensor had good linearity at the magnetic field range from -3 Oe to +3 Oe. The sensitivity reached 65 mv/Oe and the sensor had well temperature stability. The magnetic field resolution can reach 50 μOe and small magnetic target can be detected.