JP2006032085A - 静電容量式近接センサ - Google Patents
静電容量式近接センサ Download PDFInfo
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
- G01D5/14—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
- G01D5/24—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying capacitance
- G01D5/2405—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying capacitance by varying dielectric
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
- G01D5/14—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
- G01D5/24—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying capacitance
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
- G01R27/26—Measuring inductance or capacitance; Measuring quality factor, e.g. by using the resonance method; Measuring loss factor; Measuring dielectric constants ; Measuring impedance or related variables
- G01R27/2605—Measuring capacitance
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
- G01V3/08—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices
- G01V3/088—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices operating with electric fields
Abstract
【解決手段】 物体の接近を検出する通常モードとセンサ部10と主回路部20との接続状態を診断する自己診断モードとを備え、シールドケーブル30の他端側の被覆線32への第1の発振信号と同位相及び同電位の第2の発振信号の供給を、通常モードではオン状態、自己診断モードではオフ状態とする出力オンオフ制御部23を備えた。制御回路24は、自己診断モードでは、通常モード時の検知信号と自己診断モード時の検知信号とを比較して両者の変化からセンサ部10又はセンサ部10と主回路部20との接続状態の異常を判定する。
【選択図】 図1
Description
Claims (2)
- 検知電極となる第1の電極、検知電極とは異なる第2の電極及び両電極の間に両電極とは絶縁状態で配置されたガード電極を有するセンサ部と、
前記第1の電極によって形成される静電容量に基づく検知信号を出力して前記検知電極に物体が接近したことを検出し出力する主回路部と、
前記センサ部と前記主回路部とを接続する第1及び第2の配線を有する配線手段と
を備え、
前記第1の電極及びガード電極が、前記配線手段の一端側の前記第1の配線及び前記第2の配線にそれぞれ接続され、
前記主回路部が、前記配線手段の他端側の第1の配線に前記第1の電極によって形成される静電容量に基づく第1の発振信号を与え、前記配線手段の他端側の前記第2の配線に前記第1の発振信号と同位相及び同電圧の第2の発振信号を与える
ようにした静電容量式近接センサにおいて、
前記主回路部は、前記物体の接近を検出する通常モードと前記センサ部又は前記センサ部と主回路部との接続状態を診断する自己診断モードとを備え、
前記配線手段の他端側の被覆線への前記第2の発振信号の供給を、前記通常モードではオン状態、前記自己診断モードではオフ状態とする出力オンオフ制御手段と、
前記自己診断モードでは、前記通常モード時の前記検知信号と前記自己診断モード時の前記検知信号とを比較して両者の変化から前記センサ部又は前記センサ部と前記主回路部との接続状態の異常を判定する制御手段と
を備えたことを特徴とする静電容量式近接センサ。 - 検知電極となる第1の電極、検知電極とは異なる第2の電極及び両電極の間に両電極とは絶縁状態で配置されたガード電極を有するセンサ部と、
前記第1の電極によって形成される静電容量に基づく検知信号を出力して前記検知電極に物体が接近したことを検出し出力する主回路部と、
前記センサ部と前記主回路部とを接続する第1及び第2の配線を有する配線手段と
を備え、
前記第1の電極及びガード電極が、前記配線手段の一端側の前記第1の配線及び第2の配線にそれぞれ接続され、
前記主回路部が、前記配線手段の他端側の第1の配線に前記第1の電極によって形成される静電容量に基づく第1の発振信号を与え、前記配線手段の他端側の前記第2の配線に前記第1の発振信号と同位相及び同電圧の第2の発振信号を与える
ようにした静電容量式近接センサにおいて、
前記主回路部は、前記物体の接近を検出する通常モードと前記センサ部又は前記センサ部と主回路部との接続状態を診断する自己診断モードとを備え、
前記自己診断モードにおいて、前記シールドケーブルの他端側の第2の配線への前記第2の発振信号の供給に代えて予め設定された所定の電圧パターンを印加する電圧印加手段と、
前記診断モードにおいて、前記所定の電圧パターンが印加されたときの前記検知信号の変化から前記センサ部又は前記センサ部と前記主回路部との接続状態の異常を判定する制御手段と
を備えたことを特徴とする静電容量式近接センサ。
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JP2004208341A JP4531469B2 (ja) | 2004-07-15 | 2004-07-15 | 静電容量式近接センサ |
US11/178,383 US7119554B2 (en) | 2004-07-15 | 2005-07-12 | Electrical capacitance proximity sensor |
CNB200510083174XA CN100570786C (zh) | 2004-07-15 | 2005-07-13 | 电容接近传感器 |
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JP2004208341A JP4531469B2 (ja) | 2004-07-15 | 2004-07-15 | 静電容量式近接センサ |
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JP4531469B2 JP4531469B2 (ja) | 2010-08-25 |
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JP6522048B2 (ja) * | 2017-05-31 | 2019-05-29 | 本田技研工業株式会社 | 電力装置及び電力装置の製造方法 |
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JP2006351531A (ja) * | 2005-06-16 | 2006-12-28 | Asulab Sa | 透明電極を有する透明装置の製造方法 |
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JP2008298562A (ja) * | 2007-05-31 | 2008-12-11 | Koyo Electronics Ind Co Ltd | 自己診断機能付き近接センサ |
JP2008301158A (ja) * | 2007-05-31 | 2008-12-11 | Koyo Electronics Ind Co Ltd | 自己診断機能付き近接センサ |
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JPWO2010050607A1 (ja) * | 2008-10-31 | 2012-03-29 | 株式会社フジクラ | 静電容量型センサ |
JP2012509610A (ja) * | 2008-11-18 | 2012-04-19 | イデント テクノロジー アーゲー | 静電容量式センサシステム |
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JP2011053212A (ja) * | 2009-08-31 | 2011-03-17 | Robert Bosch Gmbh | 機械的な構成部分での周辺監視のためのセンサシステムおよび当該センサシステムを駆動制御および評価する方法 |
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KR102199857B1 (ko) * | 2012-04-16 | 2021-01-12 | 사이레고 테크놀로지 인코포레이티드 | 용량 결합 기반 센서 |
CN111473809A (zh) * | 2019-01-23 | 2020-07-31 | 东京零件工业股份有限公司 | 静电电容式接近传感器 |
JP7472589B2 (ja) | 2020-03-27 | 2024-04-23 | 株式会社ニデック | 眼科検査装置 |
CN113465486A (zh) * | 2020-03-31 | 2021-10-01 | 矢崎总业株式会社 | 检查屏蔽电线端接部分的检查装置和诊断其性能的方法 |
Also Published As
Publication number | Publication date |
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CN1725410A (zh) | 2006-01-25 |
CN100570786C (zh) | 2009-12-16 |
JP4531469B2 (ja) | 2010-08-25 |
US20060022682A1 (en) | 2006-02-02 |
US7119554B2 (en) | 2006-10-10 |
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