Patent · US Active

Voltage sensor

US10422820B2 · kind B2 · utility

0Cited by

0References

6Claims

0Family size

Assignees

YAZAKI CORPORATION · JP
TOYOTA SCHOOL FOUNDATION · JP

Inventors

Hiroki Ishihara · Sakai, JP
Makoto Ishii · Nagoya, JP
Minoru Sasaki

Key dates

Filing date	Oct 3, 2017
Grant date	Sep 24, 2019
Priority date	—
Expiry date	Oct 3, 2037

Classification

Technology area (CPC G)Physics
CPC primaryG01R15/24
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A voltage sensor includes a vibrator configured to be supported by a mechanical supporting portion and to be given a floating potential, a drive electrode configured to be disposed adjacent to the vibrator and to resonate the vibrator with applied AC voltage, a driver configured to apply an AC voltage that crosses 0 V to the drive electrode, a fixed electrode configured to be disposed adjacent to the vibrator with a gap formed between the fixed electrode and the vibrator, and a calculator configured to detect a magnitude of a measurement target voltage based on a change of a resonant frequency of the vibrator when the measurement target voltage is applied to the fixed electrode.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.