Invention Application
- Patent Title: ROTATION STATE DETECTION DEVICE
- Patent Title (中): 旋转状态检测装置
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Application No.: US14893467Application Date: 2014-05-26
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Publication No.: US20160123778A1Publication Date: 2016-05-05
- Inventor: Motoki TACHIIRI
- Applicant: DENSO CORPORATION
- Priority: JP2013-114958 20130531
- International Application: PCT/JP2014/002756 WO 20140526
- Main IPC: G01D5/241
- IPC: G01D5/241 ; G01B7/30

Abstract:
A rotation state detection device is applied to an operation device having a rotating body that rotates in response to an input of an operation force, and a supporting body that supports the rotating body rotatably. The rotation state detection device includes: a first electrode arranged at the rotating body; and a second electrode arranged at the supporting body and generating a capacitance with the first electrode. The first electrode and the second electrode are arranged to vary the capacitance periodically each time the rotating body rotates by a predetermined angle and make a shape of a capacitance waveform representing a change in the capacitance to be different. A rotational angle of the rotating body is calculated based on the number of periodic times the capacitance varies, and a rotational direction of the rotating body is determined based on the shape of the capacitance waveform.
Public/Granted literature
- US09568337B2 Rotation state detection device Public/Granted day:2017-02-14
Information query
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