Title:
ROTATION SENSOR
Document Type and Number:
WIPO Patent Application WO/2015/008439
Kind Code:
A1
Abstract:
A rotation sensor has a plurality of magnetoelectric conversion units (10, 20), and each of the magnetoelectric conversion units has paired magnetoresistance effect elements (11-14, 21-24). The magnetization directions of the pinned layers provided to each of the paired magnetoresistance effect elements are different from each other by 180°. The paired magnetoresistance effect elements provided to each of the magnetoelectric conversion units are disposed side-by-side along the rotation direction of a rotating body and are disposed so as to be symmetrical in relation to a reference line extending from the axis of rotation of the rotating body so as to be perpendicular to the rotation direction. The paired magnetoresistance effect elements form bridge circuits, and the midpoint potentials of the bridge circuits are made to be signals based on the rotation state of the rotating body.
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Inventors:
KINPARA TAKAMASA (JP)
KURUMADO NORIHIRO (JP)
OKUDA YASUYUKI (JP)
KURUMADO NORIHIRO (JP)
OKUDA YASUYUKI (JP)
Application Number:
PCT/JP2014/003436
Publication Date:
January 22, 2015
Filing Date:
June 27, 2014
Export Citation:
Assignee:
DENSO CORP (JP)
International Classes:
G01D5/16; G01D5/245
Domestic Patent References:
| WO2008130002A1 | 2008-10-30 | |||
| WO2010029684A1 | 2010-03-18 | |||
| WO2013094236A1 | 2013-06-27 |
Attorney, Agent or Firm:
KIN, Junhi (JP)
Gold Junki (JP)
Gold Junki (JP)
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