ES2051584T3 - Disposicion para el procesado de señales de sensor. - Google Patents

Disposicion para el procesado de señales de sensor.

Info

Publication number
ES2051584T3
ES2051584T3 ES91900801T ES91900801T ES2051584T3 ES 2051584 T3 ES2051584 T3 ES 2051584T3 ES 91900801 T ES91900801 T ES 91900801T ES 91900801 T ES91900801 T ES 91900801T ES 2051584 T3 ES2051584 T3 ES 2051584T3
Authority
ES
Spain
Prior art keywords
sub
capacitor
loads
measure
capacitors
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Lifetime
Application number
ES91900801T
Other languages
English (en)
Inventor
Georg Schneider
Richard Wagner
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Endress and Hauser SE and Co KG
Original Assignee
Endress and Hauser SE and Co KG
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
Application filed by Endress and Hauser SE and Co KG filed Critical Endress and Hauser SE and Co KG
Application granted granted Critical
Publication of ES2051584T3 publication Critical patent/ES2051584T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L9/00—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means
    • G01L9/0041—Transmitting or indicating the displacement of flexible diaphragms
    • G01L9/0072—Transmitting or indicating the displacement of flexible diaphragms using variations in capacitance
    • 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
    • G01D5/2417—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 separation
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L9/00—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means
    • G01L9/12—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means by making use of variations in capacitance, i.e. electric circuits therefor
    • 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 Resistance Or Impedance (AREA)
  • Measuring Fluid Pressure (AREA)
  • Package Closures (AREA)
  • Processing Of Meat And Fish (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)
  • Indication And Recording Devices For Special Purposes And Tariff Metering Devices (AREA)

Abstract

LA INVENCION ESTA DESTINADA A PROCESAR SEÑALES DE SENSOR SUMINISTRADAS DESDE UN SENSOR CAPACITIVO (20) QUE CONTIENE UN CAPACITOR DE MEDIDA (21) CON CAPACITANCIA DE MEDIDA (C SUB X) QUE PUEDE ESTAR INFLUENCIADA POR UN VALOR FISICO QUE VA A MEDIRSE Y POR LO MENOS UN CAPACITOR DE REFERENCIA (22) CON UNA CAPACITANCIA DE REFERENCIA (C SUB REF) INFLUENCIABLE DE MODO DIFERENTE Y QUE PROPORCIONA UN EFECTO DE MEDIDA (M) DEPENDIENTE DE ESTAS DOS CAPACIDADES. TIENE UN CIRCUITO PROCESADOR DE SEÑAL, QUE OPERA SEGUN EL PRINCIPIO DE TRANSPORTE DE CARGAS CUANTIFICADAS A TRAVES DE LAS ESTRUCTURAS DE UN CONMUTADOR-CAPACITOR Y EQUILIBRIO DE CARGA POR LO MENOS EN EL TIEMPO MEDIO, QUE RECIBE LAS SEÑALES DE SENSOR QUE REPRESENTAN EL EFECTO DE MEDIDA (M) Y ALIMENTA UNA SEÑAL DE SALIDA (S/S SUB REF) CORRESPONDIENTE, P.EJ. ANALOGA. LOS PRIMEROS ELECTRODOS (24) DE LOS CAPACITORES (21, 22) ESTAN EN UN POTENCIAL FIJO (U SUB 1) Y PUEDEN CONECTARSE SEGUNDOS ELECTRODOS (26, 28) CON EL PROPOSITO DE TRANSPORTAR CARGAS HACIA LA PRIMERA ENTRADA DE UN AMPLIFICADOR DE OPERACION DE ENTRADA (A SUB 1), SU SEGUNDA ENTRADA ESTA EN UN POTENCIAL DE REFERENCIA (U SUB 4) QUE SE INVIERTE CON EL PROPOSITO DE RECARGAR LOS CAPACITORES (21, 22) NECESARIOS PARA FORMAR UN GRUPO DE CARGAS TRANSPORTADAS.
ES91900801T 1989-12-20 1991-07-12 Disposicion para el procesado de señales de sensor. Expired - Lifetime ES2051584T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19893942159 DE3942159A1 (de) 1989-12-20 1989-12-20 Anordnung zur verarbeitung von sensorsignalen

Publications (1)

Publication Number Publication Date
ES2051584T3 true ES2051584T3 (es) 1994-06-16

Family

ID=6395937

Family Applications (1)

Application Number Title Priority Date Filing Date
ES91900801T Expired - Lifetime ES2051584T3 (es) 1989-12-20 1991-07-12 Disposicion para el procesado de señales de sensor.

Country Status (8)

Country Link
EP (1) EP0458931B1 (es)
JP (1) JP2515456B2 (es)
CA (1) CA2046344C (es)
DE (2) DE3942159A1 (es)
DK (1) DK0458931T3 (es)
ES (1) ES2051584T3 (es)
IE (1) IE904484A1 (es)
WO (1) WO1991009278A1 (es)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4133426A1 (de) * 1991-10-09 1993-04-15 Bosch Gmbh Robert Schaltungsanordnung zur auswertung und zum test eines kapazitiven sensors
FR2682768A1 (fr) * 1991-10-21 1993-04-23 Otic Fischer & Porter Methodes de conversion de rapports d'impedances applicables aux appareils de mesure, notamment aux transmetteurs de pression industriels, et leurs dispositifs de mise en óoeuvre.
DE4225113C2 (de) * 1992-07-30 1995-05-04 Erhardt & Leimer Gmbh Vorrichtung zur Überwachung einer laufenden Warenbahn
DE4227052C1 (de) * 1992-08-13 1994-03-10 Schmidt Werner Dr Sensorsystem zur berührungsfreien Abtastung von Etiketten
DE4237196C1 (de) * 1992-11-04 1994-02-10 Vega Grieshaber Gmbh & Co Verfahren und Anordnung zur Messung zumindest einer Kapazität
DE4434338C2 (de) * 1994-09-26 1996-12-19 Siemens Ag Ausleseschaltung für einen kapazitiven Sensor
DE19744152A1 (de) * 1997-10-07 1999-04-29 Ifm Electronic Gmbh Schaltungsanordnung zur Erfassung der Kapazität bzw. einer Kapazitätsänderung eines kapazitiven Schaltungs- oder Bauelementes
DE19711215C1 (de) * 1997-03-18 1998-05-07 Heidenhain Gmbh Dr Johannes Verfahren und Vorrichtung zur Umschaltung zwischen verschiedenen Ausgangssignal-Arten einer Positionsmeßeinrichtung
DE19833210C2 (de) * 1998-07-23 2000-06-21 Siemens Ag Verstärkerschaltung zur Kapazitätsmessung
DE19833211C2 (de) 1998-07-23 2000-05-31 Siemens Ag Verfahren zur Bestimmung sehr kleiner Kapazitäten und Verwendung
JP3588276B2 (ja) * 1999-07-26 2004-11-10 株式会社山武 センサ信号処理回路
JP2003028607A (ja) 2001-07-12 2003-01-29 Sony Corp 静電容量検出装置およびこれを用いた指紋照合装置
EP1830182A1 (fr) * 2006-02-22 2007-09-05 Glaverbel Vitrage feuilleté
ATE526559T1 (de) 2009-03-10 2011-10-15 Em Microelectronic Marin Sa Elektronischer schaltkreis mit kapazitivem sensor zur messung eines physikalischen parameters und verfahren zur ingangsetzung des elektronischen schaltkreises
DE102009057439B4 (de) 2009-10-27 2012-09-27 Gerd Reime Vorrichtung und Verfahren zur fehlerfreien kapazitiven Messwerterfassung
KR101423063B1 (ko) * 2010-02-02 2014-08-13 엠케이에스 인스트루먼츠, 인코포레이티드 용량성 압력 센서
CN118758460B (zh) * 2024-09-09 2024-11-19 成都时代慧道科技有限公司 压力传感器的压力变量转化为电变量的工作方法及系统

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4039940A (en) * 1976-07-30 1977-08-02 General Electric Company Capacitance sensor
US4128985A (en) * 1977-10-31 1978-12-12 Package Machinery Company Control system for package making machine
DE3125927A1 (de) * 1981-07-01 1983-01-20 Herbert Dipl.-Ing. 6240 Königstein Niedecker Verfahren zum fuellen und verschliessen von wuersten

Also Published As

Publication number Publication date
DE59005540D1 (de) 1994-06-01
EP0458931B1 (de) 1994-04-27
CA2046344C (en) 2000-03-07
DK0458931T3 (da) 1994-07-25
JPH04503713A (ja) 1992-07-02
CA2046344A1 (en) 1991-06-21
WO1991009278A1 (de) 1991-06-27
DE3942159A1 (de) 1991-06-27
JP2515456B2 (ja) 1996-07-10
IE904484A1 (en) 1991-07-03
EP0458931A1 (de) 1991-12-04

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