Title:
ROTATION ANGLE DETECTING DEVICE AND ROTATION SHIFTER
Document Type and Number:
Japanese Patent JP2022074174
Kind Code:
A
Abstract:
To provide a rotation angle detecting device and rotation shifter that can sufficiently suppress erroneous detection of a rotation angle due to disturbance.SOLUTION: A rotation angle detecting device comprises: a rotating member 110 that rotates in accordance with operation; a first magnet 121 and a second magnet 122 that rotate in accordance with rotation of the rotating member 110; a first magnetism detection element 131 that detects a direction of a first magnetic field generated by the first magnet 121; a second magnetism detection element 132 that detects a direction of a second magnetic field generated by the second magnet 122; a rotation angle identifying section 142 that identifies a rotation angle of the rotating member 110 on the basis of detection results of the first magnetism detection element 131 and detection results of the second magnetism detection element 132; and a determining section 141 that determines external intrusion of magnetism on the basis of the detection results of the first magnetism detection element 131 and the detection results of the second magnetism detection element 132. The first magnet 121 and the second magnet 122 rotate at the same angle in the same direction, and the direction of the first magnetic field and the direction of the second magnetic field are opposite.SELECTED DRAWING: Figure 1
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Inventors:
SUGAWARA DAISAKU
Application Number:
JP2019050296A
Publication Date:
May 18, 2022
Filing Date:
March 18, 2019
Export Citation:
Assignee:
ALPSALPINE CO LTD
International Classes:
G01D5/244; G01B7/30; G01D5/245
Attorney, Agent or Firm:
Tadashige Ito
Tadahiko Ito
Tadahiko Ito
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