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Title:
MAGNETIC DETECTION DEVICE, DETECTION METHOD, AND DETECTION PROGRAM
Document Type and Number:
WIPO Patent Application WO/2021/064800
Kind Code:
A1
Abstract:
This magnetic detection device comprises a magnetic sensor capable of measuring the size of an X-direction component of a magnetic field. The magnetic detection device determines whether the timing at which a magnetic body moving in the X direction passes a nearest position has been detected (S5). The magnetic detection device acquires an X-direction component, a Y-direction component, and a Z-direction component of the magnetic field as measured by the magnetic sensor at the timing at which the magnetic body passes the nearest position (S6). The magnetic detection device acquires the X-direction component of the magnetic field as measured by the magnetic sensor when the magnetic body is in a predetermined position (S7). The magnetic detection device estimates a distance z on the basis of the X-direction component of the magnetic field acquired in S6 and the X-direction component of the magnetic field acquired in S7 (S8). The magnetic detection device estimates a size m of a magnetic moment on the basis of any of the X-direction component, the Y-direction component, and the Z-direction component of the magnetic field acquired in S6, and on the basis of the distance z estimated in S8 (S10).

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Inventors:
MIYAZAKI HIDEKI (JP)
KIMURA KAZUYA (JP)
Application Number:
PCT/JP2019/038538
Publication Date:
April 08, 2021
Filing Date:
September 30, 2019
Export Citation:
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Assignee:
FUJIDENOLO CO LTD (JP)
International Classes:
G01N27/72; G01R33/02; G01V3/08
Domestic Patent References:
WO2018084278A12018-05-11
WO2018181836A12018-10-04
Foreign References:
JP2019512088A2019-05-09
US8575929B12013-11-05
JP2012202781A2012-10-22
JP2002333484A2002-11-22
JP2007163469A2007-06-28
JP2015025692A2015-02-05
US7342399B12008-03-11
US20020171427A12002-11-21
JP2019512088A2019-05-09
Other References:
See also references of EP 4040148A4
Attorney, Agent or Firm:
YAMAMOTO, Hisashi (JP)
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