IN174276B - - Google Patents

Info

Publication number
IN174276B
IN174276B IN68189A IN68189A IN174276B IN 174276 B IN174276 B IN 174276B IN 68189 A IN68189 A IN 68189A IN 68189 A IN68189 A IN 68189A IN 174276 B IN174276 B IN 174276B
Authority
IN
India
Prior art keywords
charge
primary electrode
pct
primary
electrode
Prior art date
Application number
IN68189A
Other languages
English (en)
Inventor
Rob Van Der Valk
Original Assignee
Barnwell Invest S A
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=10643546&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=IN174276(B) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Barnwell Invest S A filed Critical Barnwell Invest S A
Publication of IN174276B publication Critical patent/IN174276B/en

Links

Classifications

    • 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
    • G01D5/241—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 relative movement of capacitor electrodes
    • G01D5/2412—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 relative movement of capacitor electrodes by varying overlap
    • G01D5/2415—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 relative movement of capacitor electrodes by varying overlap adapted for encoders
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
  • Measurement Of Resistance Or Impedance (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
  • Inorganic Insulating Materials (AREA)
  • Measuring Fluid Pressure (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
IN68189A 1988-09-14 1989-07-12 IN174276B (cs)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8821512A GB2223589B (en) 1988-09-14 1988-09-14 Measurement of capacitance and parameters related thereto

Publications (1)

Publication Number Publication Date
IN174276B true IN174276B (cs) 1994-10-29

Family

ID=10643546

Family Applications (1)

Application Number Title Priority Date Filing Date
IN68189A IN174276B (cs) 1988-09-14 1989-07-12

Country Status (16)

Country Link
US (1) US5237284A (cs)
EP (1) EP0442898B2 (cs)
JP (1) JP2846387B2 (cs)
CN (1) CN1017553B (cs)
AT (1) ATE90156T1 (cs)
AU (1) AU4335789A (cs)
BR (1) BR8907652A (cs)
CA (1) CA1330453C (cs)
DE (1) DE68906896T3 (cs)
ES (1) ES2017147A6 (cs)
GB (1) GB2223589B (cs)
HK (2) HK105391A (cs)
IL (1) IL91626A (cs)
IN (1) IN174276B (cs)
WO (1) WO1990002923A1 (cs)
ZA (1) ZA896973B (cs)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4963829A (en) * 1988-03-21 1990-10-16 Wereb John A Shaft rotation analyzer using variable capacitance transducer maintained at a constant voltage
DE4201813A1 (de) * 1992-01-24 1993-07-29 Pav Praezisions Apparatebau Ag Vorrichtung zum messen einer geometrischen groesse
JP2588346B2 (ja) * 1992-09-01 1997-03-05 株式会社ミツトヨ 変位測定装置
CH689190A5 (fr) * 1993-10-19 1998-11-30 Hans Ulrich Meyer Instrument de mesure de longueurs ou d'angles.
US5594353A (en) * 1995-05-11 1997-01-14 Elsag International N.V. Method and apparatus for measuring the change in capacitance values in dual capacitors
US5610528A (en) * 1995-06-28 1997-03-11 International Business Machines Corporation Capacitive bend sensor
US5936411A (en) * 1997-11-28 1999-08-10 Sarcos L.C. Apparatus and method for measuring strain within a structure
US6307385B1 (en) 1997-12-30 2001-10-23 Vibrosystm, Inc. Capacitance measuring circuit for a capacitive sensor
DE10035192C1 (de) * 2000-07-20 2001-10-11 Carl Mahr Holding Gmbh Kapazitiver Wegaufnehmer für stromsparende Messgeräte
JP2003223275A (ja) * 2001-11-22 2003-08-08 Omron Corp 入力装置
JP3848901B2 (ja) * 2002-07-12 2006-11-22 ニッタ株式会社 静電容量式センサ
US6829119B2 (en) * 2002-10-24 2004-12-07 Seagate Technology Llc Disc drive microactuator with lateral position sensor
US7570066B2 (en) * 2007-11-01 2009-08-04 Seagate Technology Llc Simultaneous detection of in-plane and out-of-plane position displacement with capacitive sensors
CN102736049B (zh) * 2011-11-25 2014-11-19 中国电力科学研究院 一种可无线遥控的模拟介质损耗器
CN110068356B (zh) * 2018-01-23 2021-08-03 上海三菱电梯有限公司 门绝对位置检测装置
CN116558403A (zh) * 2023-07-12 2023-08-08 天津宜科自动化股份有限公司 一种基于电容器测量位移的系统

Family Cites Families (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE953745C (de) * 1954-06-09 1956-12-06 Movomatic Sa Mechanisch-elektrische Laengen-Messeinrichtung
US3071758A (en) * 1959-09-29 1963-01-01 Servomatic Hydraulics Guildfor Potentiometers
US3297941A (en) * 1963-01-23 1967-01-10 Sogenique Electronics Ltd Position-sensitive apparatus
GB1190469A (en) * 1967-12-06 1970-05-06 Bausch & Lomb Capacitive Transducer.
GB1274856A (en) * 1968-10-17 1972-05-17 Peter Caleb Frederi Wolfendale Improvements in capacitive displacement transducers
US3683402A (en) * 1970-11-12 1972-08-08 Bausch & Lomb Capacitive transducer drive mechanism for the recording pen of a graphical recorder
US3668672A (en) * 1970-11-13 1972-06-06 Bausch & Lomb Capacitive transducer
CH538114A (de) * 1971-05-06 1973-06-15 Bauer Messinstrumente Ag Vorrichtung zur Digitalen, kapazitiven Messung der örtlichen Lage von Trennschichten zwischen mindestens zwei aneinandergrenzenden Medien
CH539837A (de) * 1972-03-22 1973-07-31 Ulrich Meyer Hans Kapazitive Längenmesseinrichtung
CH550378A (de) * 1972-09-07 1974-06-14 Maag Zahnraeder & Maschinen Ag Vorrichtung zur kapazitiven winkel- oder laengenmessung.
US3938113A (en) * 1974-06-17 1976-02-10 International Business Machines Corporation Differential capacitive position encoder
US4217543A (en) * 1977-05-23 1980-08-12 John Fluke Mfg. Co., Inc. Digital conductance meter
SE411392B (sv) * 1977-12-09 1979-12-17 Inst Mikrovagsteknik Vid Tekni Metanordning for kapacitiv bestemning av det inbordes leget hos tva relativt varandra rorliga delar
JPS5491355A (en) * 1977-12-28 1979-07-19 Nippon Chemical Ind Device for measuring displacement
DE2758525B1 (de) * 1977-12-28 1979-06-28 Heidenhain Gmbh Dr Johannes Messeinrichtung mit codierter Unterteilung
US4177421A (en) * 1978-02-27 1979-12-04 Xerox Corporation Capacitive transducer
GB2020815B (en) * 1978-04-26 1983-02-09 Ogasawara H Displacement sensor using differential capacitor
GB2022840B (en) * 1978-05-31 1982-10-13 Automatic Systems Lab Ltd Capacitve displacement transducer
JPS5562310A (en) * 1978-10-20 1980-05-10 Hiromi Ogasawara Direct-acting type displacement detector
GB2035569A (en) * 1978-11-29 1980-06-18 Peakin K Capacitive transducers
FR2454083A1 (fr) * 1979-04-09 1980-11-07 Facom Dispositif de mesure de la position relative de deux objets
JPS568508A (en) * 1979-07-02 1981-01-28 Nippon Soken Inc Rotation detector
NL7905562A (nl) * 1979-07-17 1981-01-20 Heerens Willem Christiaan Capacitieve meter.
GB2076070B (en) * 1980-05-19 1983-11-23 United Technologies Corp Wind turbine
CH651136A5 (de) * 1980-11-21 1985-08-30 Hans Ulrich Meyer Kapazitives laengen- und winkelmessverfahren.
US4543562A (en) * 1982-08-23 1985-09-24 Rca Corporation Mechanically-actuated touchbars and touchplates using multiple-closure switches

Also Published As

Publication number Publication date
GB8821512D0 (en) 1988-10-12
EP0442898B1 (en) 1993-06-02
IL91626A0 (en) 1990-04-29
DE68906896T2 (de) 1993-09-09
ZA896973B (en) 1991-09-25
CN1017553B (zh) 1992-07-22
ATE90156T1 (de) 1993-06-15
JPH04501311A (ja) 1992-03-05
GB2223589A (en) 1990-04-11
BR8907652A (pt) 1991-05-14
IL91626A (en) 1993-04-04
HK105391A (en) 1991-12-27
GB2223589B (en) 1991-07-24
CA1330453C (en) 1994-06-28
DE68906896T3 (de) 2002-11-07
US5237284A (en) 1993-08-17
AU4335789A (en) 1990-04-02
EP0442898B2 (en) 2002-04-03
EP0442898A1 (en) 1991-08-28
DE68906896D1 (de) 1993-07-08
JP2846387B2 (ja) 1999-01-13
CN1041216A (zh) 1990-04-11
WO1990002923A1 (en) 1990-03-22
ES2017147A6 (es) 1991-01-01
HK38395A (en) 1995-03-24

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