High-Sensitivity magnetic field sensor shielded from the effect of earth's magnetism

被引：0

作者：

Sonoda, Toshikatsu ^{[1
]}

Ueda, Ryuzo ^{[1
]}

Ikemoto, Hajime ^{[1
]}

机构：

[1] Kyushu Inst of Technology

来源：

Electrical Engineering in Japan (English translation of Denki Gakkai Ronbunshi) | 1993年 / 113卷 / 01期

关键词：

DC ... - Electric excitation - Geomagnetism - Magnetic field effects - Magnetic fields - Magnetic shielding;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

To realize a general-purpose magnetic field sensor having a detection sensitivity of the order of 10-12 T/√Hz at room temperature, a problem of removing the effect of the Earth's magnetism from the sensor must be solved because its magnitude is 4.5 × 104 times larger than that in the range to be detectable. For this purpose, a well-known approach of exciting the sensor in the opposite direction to the Earth's magnetism to cancel out the value has been adopted. This paper aims at realizing a magnetic field sensor free from the Earth's magnetism by introducing a method called 'zero magnetic field.' In practice, such a sensor was developed and the tested results confirmed that the detection performance was maintained without losing the high sensitivity.

引用

页码：60 / 69