CAPACITANCE SENSOR AND ELECTRIC APPARATUS INCLUDING THE SAME

PROBLEM TO BE SOLVED: To provide a capacitance sensor capable of suppressing malfunction due to noise.SOLUTION: A capacitance sensor (1) includes: a detection electrode (2); a dummy electrode (4) as an electrode for detecting noise; and a calculation section (6) for generating a calculation signal b...

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Bibliographic Details
Main Authors TAGUCHI SHIGEYA, OTANI TAKEHIRO, KANAZAWA TAKESUKE
Format Patent
LanguageEnglish
Japanese
Published 22.03.2016
Subjects
BASIC ELECTRONIC CIRCUITRY
DETECTING MASSES OR OBJECTS
ELECTRICITY
GEOPHYSICS
GRAVITATIONAL MEASUREMENTS
MEASURING
MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUIDLEVEL
METERING BY VOLUME
PHYSICS
PULSE TECHNIQUE
TESTING
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Summary:PROBLEM TO BE SOLVED: To provide a capacitance sensor capable of suppressing malfunction due to noise.SOLUTION: A capacitance sensor (1) includes: a detection electrode (2); a dummy electrode (4) as an electrode for detecting noise; and a calculation section (6) for generating a calculation signal by calculating a signal including a first noise component based on the noise immixed from the detection electrode (2) and a signal formed of a second noise component based on the noise immixed from the dummy electrode (4).SELECTED DRAWING: Figure 1 【課題】雑音による誤動作を抑制可能な静電容量センサを提供する。【解決手段】本発明に係る静電容量センサ（１）は、検出電極（２）と、雑音を検出するための電極であるダミー電極（４）と、検出電極（２）から混入した雑音に基づく第１雑音成分を含む信号およびダミー電極（４）から混入した雑音に基づく第２雑音成分から成る信号を演算することによって演算信号を生成する演算部（６）とを備える。【選択図】図１
Bibliography:Application Number: JP20140159904