Title:
FLUX GATE SENSOR, ELECTRONIC DIRECTION FINDER USING SAME, AND CURRENT METER
Document Type and Number:
WIPO Patent Application WO/2011/155527
Kind Code:
A1
Abstract:
A flux gate sensor comprises at least a magnetic core having a central portion and first and second end portions being continuous to the central portion, having a width wider than the width of the central portion, and located at both ends of the central portion. The flux gate sensor further comprises a first solenoid coil wound around the first and second end portions and a second solenoid coil wound around the central portion. If the numbers of turns of the first and second solenoid coils are denoted by T1 and T2, respectively, when a value of T2/(T1 + T2) is smaller than a boundary value, the first solenoid coil functions as an excitation coil. When the value of T2/(T1 + T2) is greater than the boundary value, the second solenoid coil functions as the excitation coil. When the value of T2/(T1 + T2) is equal to the boundary value, both of the first and second solenoid coils can function as the excitation coil.
Inventors:
NAGASU Katsubumi (Sakura Works 1440, Mutsuzaki, Sakura-sh, Chiba 50, 〒2858550, JP)
Application Number:
JP2011/063135
Publication Date:
December 15, 2011
Filing Date:
June 08, 2011
Export Citation:
Assignee:
Fujikura Ltd. (5-1 Kiba 1-chome, Koto-ku Tokyo, 12, 〒1358512, JP)
株式会社フジクラ (〒12 東京都江東区木場１丁目５番１号 Tokyo, 〒1358512, JP)
株式会社フジクラ (〒12 東京都江東区木場１丁目５番１号 Tokyo, 〒1358512, JP)
International Classes:
G01R33/04; G01C17/32
Attorney, Agent or Firm:
SHIGA Masatake et al. (1-9-2, Marunouchi Chiyoda-k, Tokyo 20, 〒1006620, JP)
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Claims: