WO2003087749A3 - Messverstärkervorrichtung - Google Patents

Messverstärkervorrichtung Download PDF

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Publication number
WO2003087749A3
WO2003087749A3 PCT/EP2003/003781 EP0303781W WO03087749A3 WO 2003087749 A3 WO2003087749 A3 WO 2003087749A3 EP 0303781 W EP0303781 W EP 0303781W WO 03087749 A3 WO03087749 A3 WO 03087749A3
Authority
WO
WIPO (PCT)
Prior art keywords
measuring
circuit
evaluating
amplifier device
carrier frequency
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.)
Ceased
Application number
PCT/EP2003/003781
Other languages
English (en)
French (fr)
Other versions
WO2003087749A2 (de
Inventor
Michael Altwein
Manfred Kreuzer
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.)
Hottinger Bruel and Kjaer GmbH
Original Assignee
Hottinger Baldwin Messtechnik GmbH
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 Hottinger Baldwin Messtechnik GmbH filed Critical Hottinger Baldwin Messtechnik GmbH
Priority to EP03725012A priority Critical patent/EP1495295A2/de
Publication of WO2003087749A2 publication Critical patent/WO2003087749A2/de
Publication of WO2003087749A3 publication Critical patent/WO2003087749A3/de
Anticipated expiration legal-status Critical
Ceased 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
    • G01L9/02—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 ohmic resistance, e.g. of potentiometers, electric circuits therefor, e.g. bridges, amplifiers or signal conditioning
    • G01L9/04—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 ohmic resistance, e.g. of potentiometers, electric circuits therefor, e.g. bridges, amplifiers or signal conditioning of resistance-strain gauges
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01G—WEIGHING
    • G01G3/00—Weighing apparatus characterised by the use of elastically-deformable members, e.g. spring balances
    • G01G3/12—Weighing apparatus characterised by the use of elastically-deformable members, e.g. spring balances wherein the weighing element is in the form of a solid body stressed by pressure or tension during weighing
    • G01G3/14—Weighing apparatus characterised by the use of elastically-deformable members, e.g. spring balances wherein the weighing element is in the form of a solid body stressed by pressure or tension during weighing measuring variations of electrical resistance
    • G01G3/142—Circuits specially adapted therefor
    • G01G3/147—Circuits specially adapted therefor involving digital counting
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L1/00—Measuring force or stress, in general
    • G01L1/20—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress
    • G01L1/22—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress using resistance strain gauges

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Amplifiers (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)

Abstract

Die Erfindung betrifft eine Messverstärkervorrichtung und ein Messverfahren für rechteckträgerfrequenzgespeiste Meßbrücken, die nach der Verstärkungsschaltung (3) mindestens eine Auswerte- und Rechenschaltung (5) aufweist. Dabei enthält die Auswerteschaltung Abtast- (4) oder Vergleichsmittel (7, 8, 9, 10, 11), die das modulierte Messsignal (Um) mindestens während einer Trägerfrequenzperiode (T) abtasten oder mit einem periodischen Bezugssignal (UD) vergleichen. Für jede Halbwelle einer Trägerfrequenzperiode (T) werden dabei Amplitudenwerte (Ap, An) oder pulsbreitenmodulierte Signale (UKp, UKn,) erzeugt, aus denen in der Rechenschaltung (5) die Differenz gebildet wird, die einen unmittelbaren Wert der erfaßten Messgrösse darstellt.
PCT/EP2003/003781 2002-04-13 2003-04-11 Messverstärkervorrichtung Ceased WO2003087749A2 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP03725012A EP1495295A2 (de) 2002-04-13 2003-04-11 Messverstärkervorrichtung

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2002116344 DE10216344A1 (de) 2002-04-13 2002-04-13 Meßverstärkervorrichtung
DE10216344.8 2002-04-13

Publications (2)

Publication Number Publication Date
WO2003087749A2 WO2003087749A2 (de) 2003-10-23
WO2003087749A3 true WO2003087749A3 (de) 2004-02-05

Family

ID=28458784

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2003/003781 Ceased WO2003087749A2 (de) 2002-04-13 2003-04-11 Messverstärkervorrichtung

Country Status (3)

Country Link
EP (1) EP1495295A2 (de)
DE (1) DE10216344A1 (de)
WO (1) WO2003087749A2 (de)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2284530C1 (ru) * 2005-05-03 2006-09-27 Государственное образовательное учреждение высшего профессионального образования "Курский государственный технический университет" Мостовой измеритель параметров двухполюсников
DE102006051365B4 (de) * 2006-10-27 2011-04-21 Sartorius Ag Messverstärkungsvorrichtung und -verfahren
RU2326389C1 (ru) * 2006-11-27 2008-06-10 Государственное образовательное учреждение высшего профессионального образования "Курский государственный технический университет" Мостовой измеритель параметров двухполюсников
RU2365921C1 (ru) * 2008-02-11 2009-08-27 Государственное образовательное учреждение высшего профессионального образования "Курский государственный технический университет" Мостовой измеритель параметров пассивных двухполюсников
RU2379696C1 (ru) * 2008-06-09 2010-01-20 Государственное образовательное учреждение высшего профессионального образования "Курский государственный технический университет" (КурскГТУ) Мостовой измеритель параметров двухполюсников
RU2376608C1 (ru) * 2008-07-08 2009-12-20 Государственное образовательное учреждение высшего профессионального образования "Курский государственный технический университет" (КурскГТУ) Мостовой измеритель параметров двухполюсников
RU2471197C2 (ru) * 2011-01-18 2012-12-27 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Юго-Западный государственный университет" (ЮЗГУ) Мостовой измеритель параметров двухполюсников
RU2461010C1 (ru) * 2011-03-16 2012-09-10 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Юго-Западный государственный университет" (ЮЗГУ) Мостовой измеритель параметров двухполюсников
RU2542640C2 (ru) * 2013-04-23 2015-02-20 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Юго-Западный государственный университет" (ЮЗГУ) Мостовой измеритель параметров n-элементных двухполюсников
RU2661457C1 (ru) * 2017-08-27 2018-07-16 Федеральное государственное бюджетное образовательное учреждение высшего образования " Юго-Западный государственный университет" (ЮЗГУ) Мостовой измеритель параметров двухполюсников

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3125133A1 (de) * 1981-06-26 1983-01-13 Datron-Electronic GmbH, 6109 Mühltal "verfahren und vorrichtung zur messung von physikalischen groessen, insbesondere gewichten"
US4862382A (en) * 1986-10-03 1989-08-29 Endress U. Hauser Gmbh U. Co. Arrangement for processing the output signals of a resistance bridge
JPH03231129A (ja) * 1990-02-06 1991-10-15 Aisan Ind Co Ltd 圧力センサ
US6223138B1 (en) * 1997-05-27 2001-04-24 Carl Schenck Ag Carrier frequency measuring method and apparatus

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE793257A (fr) * 1971-12-23 1973-04-16 Bizerba Werke Kraut Kg Wilh Dispositif de mesure de desaccord de montages en pont, principalement ohmiques
DE2260439C2 (de) * 1972-12-11 1975-01-23 Siemens Ag, 1000 Berlin Und 8000 Muenchen Schaltungsanordnung zur digitalen Messung der meBgröBenabhänglgen Verstimmung einer elektrischen Brückenschaltung
DE3037925C2 (de) * 1980-10-08 1982-11-18 Günter Dr.techn. 4630 Bochum Schierjott Schaltungsanordnung zur Messung elektrischer Eigenschaften
DE3330841A1 (de) * 1983-08-26 1985-03-14 Siemens AG, 1000 Berlin und 8000 München Auswerteschaltungen fuer passive messgroessenaufnehmer
DE19509815C1 (de) * 1995-03-22 1996-10-31 Joachim Dr Scheerer Schaltung zur Speisung einer Wheatstoneschen Brücke mit einer Rechteckwechselspannung

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3125133A1 (de) * 1981-06-26 1983-01-13 Datron-Electronic GmbH, 6109 Mühltal "verfahren und vorrichtung zur messung von physikalischen groessen, insbesondere gewichten"
US4862382A (en) * 1986-10-03 1989-08-29 Endress U. Hauser Gmbh U. Co. Arrangement for processing the output signals of a resistance bridge
JPH03231129A (ja) * 1990-02-06 1991-10-15 Aisan Ind Co Ltd 圧力センサ
US6223138B1 (en) * 1997-05-27 2001-04-24 Carl Schenck Ag Carrier frequency measuring method and apparatus

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 016, no. 012 (P - 1297) 13 January 1992 (1992-01-13) *
See also references of EP1495295A2 *

Also Published As

Publication number Publication date
WO2003087749A2 (de) 2003-10-23
EP1495295A2 (de) 2005-01-12
DE10216344A1 (de) 2003-10-23

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