Invention Grant
- Patent Title: Noncontact voltage measurement apparatus
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Application No.: US15718950Application Date: 2017-09-28
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Publication No.: US10254313B2Publication Date: 2019-04-09
- Inventor: Hiroyuki Hebiguchi
- Applicant: Alps Electric Co., Ltd.
- Applicant Address: JP Tokyo
- Assignee: ALPS ALPINE CO., LTD.
- Current Assignee: ALPS ALPINE CO., LTD.
- Current Assignee Address: JP Tokyo
- Agency: Beyer Law Group LLP
- Priority: JP2015-092096 20150428
- Main IPC: G01R29/22
- IPC: G01R29/22 ; G01R5/28 ; G01R15/16 ; G01R19/00 ; G01R5/30

Abstract:
A noncontact voltage measurement apparatus includes a sensing electrode to which a voltage corresponding to an alternating current voltage is applied, a feedback electrode, a conductive movable body that is supported so as to be displaceable in accordance with the Coulomb force generated between the movable body and the sensing electrode and the Coulomb force generated between the movable body and the feedback electrode, an elastic force for causing the movable body to return to a predetermined neutral position acting on the movable body, a displacement detection unit configured to detect a displacement of the movable body, a voltage applying unit configured to apply an alternating current voltage to the feedback electrode, and a control unit configured to control the voltage to be output from the voltage applying unit such that a detection result of the displacement from the displacement detection unit approaches a predetermined reference value.
Public/Granted literature
- US20180017597A1 NONCONTACT VOLTAGE MEASUREMENT APPARATUS Public/Granted day:2018-01-18
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