Performance of U-shaped Core Orthogonal Fluxgate Magnetometer

• Goleman K.

  Department of Applied Science for Electronic and Materials, Interdisciplinary Graduate School of Engineering Sciences, Kyushu University

• Sasada I.

  Department of Applied Science for Electronic and Materials, Interdisciplinary Graduate School of Engineering Sciences, Kyushu University

抄録

We proposed a new method for decreasing transformer effect from excitation current to sense coil in an orthogonal fluxgate operated in the fundamental mode. The point of this method is to use a U-shaped magnetic wire core on each branch of which two identical sense coils are wound and to arrange the two coils in counter series. As a result, induced voltage is reduced by a factor of 1/3 from that observed with a single wire core. The levels of the magnetic noise and drift are reduced substantially. For example, the noise level at 10 Hz decreased from 0.5 n T/√Hz to 0.08 n T/√Hz for small excitation current 4.1 m A with 5.8 m A dc bias. The driftof the sensors is confined within the range 0.5 n T for the U-shaped F G and 1 n T for the single core F G.

収録刊行物

• Ｔｒａｎｓａｃｔｉｏｎｓ　ｏｆ　ｔｈｅ　Ｍａｇｎｅｔｉｃｓ　Ｓｏｃｉｅｔｙ　ｏｆ　Ｊａｐａｎ

  Ｔｒａｎｓａｃｔｉｏｎｓ　ｏｆ　ｔｈｅ　Ｍａｇｎｅｔｉｃｓ　Ｓｏｃｉｅｔｙ　ｏｆ　Ｊａｐａｎ 5 (2), 101-104, 2005

  社団法人 日本磁気学会

キーワード

• magnetometer
• orthogonal fluxgate
• magnetic wire
• fundamental mode
• U-shaped core

詳細情報

• CRID: 1390282680200180096
• NII論文ID: 10015504536
• NII書誌ID: AA1158094X
• DOI: 10.3379/tmjpn2001.5.101
• ISSN: 18846726
• ISSN: 13467948
• ISSN: http://id.crossref.org/issn/13467948
• 本文言語コード: en
• データソース種別:
  • JaLC
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可