Low-frequency magnetic field detection for metal sensing

被引：8
|
作者：
Kiwa, Toshihiko [1 ]
Kawata, Tomoaki [1 ]
Tsukada, Keiji [1 ]
机构：
[1] Okayama Univ, Dept Elect & Elect Engn, Okayama 7008530, Japan
来源：
INTERNATIONAL JOURNAL OF APPLIED ELECTROMAGNETICS AND MECHANICS | 2007年 / 25卷 / 1-4期
关键词：
metal sensing; low-frequency; magnetic field detector;
D O I：
10.3233/JAE-2007-745
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
A new type of magnetic field detection system, which can operate at a frequency below 1 kHz, is proposed and developed. The system consists of a 40-turn-coil to generate the magnetic field and a magneto resistive sensor to detect both the amplitude and the phase signal of the magnetic field induced by eddy-current and magnetization of the samples. The magnetic field detection of ferro- and non-magnetic samples using the system is demonstrated and discussed.
引用
收藏
页码：447 / 451
页数：5
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