A new compact 2D planar fluxgate sensor with amorphous metal core

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作   者：

Kejik P.;  Janossy B.;  Popovic RS.;  Chiesi L.; 

作者机构：

Switzerland;  Dept Microengn;  Swiss Fed Inst Technol;  CH-1015 Lausanne;  .; 

关键词：

Fluxgate sensor;  Planar coils;  Amorphous ferromagnetic ribbons;  Compass; 

期刊名称：

Sensors and Actuators, A. Physical

i s s n：

0924-4247

年卷期：

2000 年 81 卷 1/3 期

页   码：

180-183

页   码：

摘   要：

A new compact 2D planar fluxgate sensor using a ferromagnetic amorphous metal core is described, The fluxgate sensor consists of two orthogonal planar metallic coils and a ring shaped amorphous magnetic ribbon mounted on a PCB substrate. Each planar coil is used alternatively as excitation or as pick-up coil. An electronic interface drives alternatively the two coils and performs a feedback on each sensing coil in order to compensate for the two measured magnetic field components. The sensing element has a magnetic sensitivity of 55 V/mT at an excitation frequency of 8.4 kHz with a 160 mA(peak) driving current. Used as an electronic compass, the reached precision angle is better than 1 degrees. (C) 2000 Elsevier Science S.A, All rights reserved.