DocumentCode :
1331781
Title :
Wide Range Orthogonal Fluxgate Sensor Fabricated With Cylinder-Shaped Ferrite Core
Author :
Yongmin Kim ; Byungwoo Yoon ; Young-Hak Kim ; Cang-Seob Yang ; Kwang-Ho Shin
Author_Institution :
Kyungsung Univ., Pusan, South Korea
Volume :
47
Issue :
10
fYear :
2011
Firstpage :
3744
Lastpage :
3747
Abstract :
In this study, we investigate the output properties of the orthogonal fluxgate sensor fabricated with a cylinder-shaped ferrite core, and examine whether it could show both high sensitivity and wide measurement range for the application of magnetic treatment facility for surface vessels and submarines. The excitation coil and pickup coil are 10 turns and 280 turns respectively. To gain the wide measurement range over 30 Oe, we design the shape of magnetic core through FEM analysis. It is found that a stable fundamental mode operation would be possible when an adequate DC bias is adding to alternating excitation current. There is a resonant peak in the operation frequency dependence of output voltage, which is caused by LC resonance of pickup coil and coaxial cable. The maximum sensitivity was ~2 V/Oe at 870 kHz, and the output increased almost linearly by external magnetic field to reach ~30 Oe.
Keywords :
coaxial cables; coils; ferrites; finite element analysis; fluxgate magnetometers; magnetic cores; magnetic sensors; underwater vehicles; FEM analysis; LC resonance; adequate DC bias; alternating excitation current; coaxial cable; cylinder-shaped ferrite core; excitation coil; external magnetic field; frequency 870 kHz; magnetic core shape; magnetic treatment facility; maximum sensitivity; measurement range; operation frequency dependence; output properties; output voltage; pickup coil; resonant peak; stable fundamental mode operation; submarines; surface vessels; wide range orthogonal fluxgate sensor; Amorphous magnetic materials; Coils; Magnetic cores; Magnetic resonance; Perpendicular magnetic anisotropy; Sensitivity; Ferrite core; fundamental mode operation; orthogonal fluxgate; wide measurement range;
fLanguage :
English
Journal_Title :
Magnetics, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9464
Type :
jour
DOI :
10.1109/TMAG.2011.2161274
Filename :
6028126
Link To Document :
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