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

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 omponents. The sensing element has a magnetic sensitivity of 55 VrmT at an excitation frequency of 8.4 kHz with a 160 mApeak driving current. Used as an electronic compass, the reached precision angle is better than 1degree.


Published in:
Sensors and Actuators A, 81, 180-183
Year:
2000
Publisher:
Elsevier
ISSN:
0924-4247
Keywords:
Laboratories:


Note: The status of this file is: EPFL only


 Record created 2011-02-15, last modified 2018-03-17

Publisher's version:
Download fulltext
PDF

Rate this document:

Rate this document:
1
2
3
 
(Not yet reviewed)