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Title:
POWER GENERATION ELEMENT, ENCODER, METHOD FOR MANUFACTURING MAGNETIC MEMBER, AND SIGNAL ACQUISITION METHOD
Document Type and Number:
WIPO Patent Application WO/2022/230652
Kind Code:
A1
Abstract:
Provided are a power generation element, encoder, method for manufacturing a magnetic member, and signal acquisition method that make it possible to reduce variation in generated power. A power generation element (100) comprises a magnetic member (110) that produces a large Barkhausen effect in response to variation in an external magnetic field and a coil (130) that is wound around the magnetic member (110). The magnetic member (110) comprises a first magnetically sensitive part (111) and a second magnetically sensitive part (112) that is more magnetically soft than the first magnetically sensitive part (111). The first magnetically sensitive part (111) is magnetized in the direction of the winding axis of the coil (130) and does not have a magnetization direction that is changed by variation in the direction of an external magnetic field.

Inventors:
TSUTSUMI SHINICHI
NUKADA KEIICHIRO
MURANISHI TOMOYUKI
WATANABE AKIHIKO
Application Number:
PCT/JP2022/017528
Publication Date:
November 03, 2022
Filing Date:
April 11, 2022
Export Citation:
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Assignee:
PANASONIC IP MAN CO LTD (JP)
International Classes:
G01D5/245; H01F5/00
Foreign References:
JP2000287470A2000-10-13
JP2006114857A2006-04-27
JP2006073974A2006-03-16
JP2012162383A2012-08-30
JP2000030939A2000-01-28
JP2016144335A2016-08-08
JP2004206378A2004-07-22
Attorney, Agent or Firm:
KAMATA Kenji et al. (JP)
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