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BR9714020A - Eddy current measurement mechanism for an indicator instrument - Google Patents

Eddy current measurement mechanism for an indicator instrument

Info

Publication number
BR9714020A
BR9714020A BR9714020-1A BR9714020A BR9714020A BR 9714020 A BR9714020 A BR 9714020A BR 9714020 A BR9714020 A BR 9714020A BR 9714020 A BR9714020 A BR 9714020A
Authority
BR
Brazil
Prior art keywords
eddy current
torque
indicator
shaft
torsion
Prior art date
Application number
BR9714020-1A
Other languages
Portuguese (pt)
Inventor
Klaus Juergen Neidhardt
Karl Heinz Mittenbuehler
Heinrich Jochen Blume
Werner Duberg
Walter Rueb
Michael Kasper
Frank Weiand
Manuela Habermann
Christian Beckhaus
Original Assignee
Mannesmann Vdo Ag
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 Mannesmann Vdo Ag filed Critical Mannesmann Vdo Ag
Publication of BR9714020A publication Critical patent/BR9714020A/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
    • G01P3/42—Devices characterised by the use of electric or magnetic means
    • G01P3/44—Devices characterised by the use of electric or magnetic means for measuring angular speed
    • G01P3/49—Devices characterised by the use of electric or magnetic means for measuring angular speed using eddy currents
    • G01P3/495—Devices characterised by the use of electric or magnetic means for measuring angular speed using eddy currents where the indicating means responds to forces produced by the eddy currents and the generating magnetic field
    • G01P3/4956—Devices characterised by the use of electric or magnetic means for measuring angular speed using eddy currents where the indicating means responds to forces produced by the eddy currents and the generating magnetic field with thermal compensation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/70—Circuitry for compensating brightness variation in the scene
    • H04N23/75—Circuitry for compensating brightness variation in the scene by influencing optical camera components

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Measuring Temperature Or Quantity Of Heat (AREA)
  • Measuring Volume Flow (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)
  • Dynamo-Electric Clutches, Dynamo-Electric Brakes (AREA)
  • Measurement Of Current Or Voltage (AREA)
  • Power Steering Mechanism (AREA)
  • Measuring Magnetic Variables (AREA)

Abstract

Patente de Invenção: <B>"MECANISMO DE MEDIçãO DE CORRENTE PARASITA PARA UM INSTRUMENTO INDICADOR"<D>. Um mecanismo de medição de corrente parasita para um instrumento indicador, com um ímã rotativo disposto num eixo motor de uma forma resistente à torção e colocado em frente de um elemento de corrente parasita, fixo de uma forma resistente à torção num veio indicador e fabricado num material condutor elétrico, sendo construído de forma a transmitir um primeiro binário ao veio indicador no caso de rotação do eixo motor, com uma mola de torção que transmite um segundo binário ao veio indicador, que está oposto ao primeiro binário, com um elemento de retorno magnético disposto atrás do elemento de corrente parasita e/ou atrás do ímã rotativo, e com um elemento de compensação dependente da temperatura para compensação de um enfraquecimento do campo magnético do ímã rotativo e uma redução na condutividade do elemento de corrente parasita com aumento da temperatura, caracterizado pelo fato do elemento de compensação (14-17) estar concebido de forma a reduzir o segundo binário, transmitido pela mola de torção (11) ao veio indicador (10), ou para manter o primeiro binário constante, transmitido ao elemento de corrente parasita (9), com aumento da temperatura.Invention Patent: <B> "PARASITE CURRENT MEASUREMENT MECHANISM FOR AN INDICATOR INSTRUMENT" <D>. An eddy current measuring mechanism for an indicator instrument, with a rotating magnet arranged on a driving shaft in a torsion-resistant manner and placed in front of an eddy current element, fixed in a torsion-resistant manner on an indicator shaft and manufactured in a electrically conductive material, being constructed to transmit a first torque to the indicator shaft in case of rotation of the driving shaft, with a torsion spring that transmits a second torque to the indicator shaft, which is opposite the first torque, with a return element magnet arranged behind the eddy current element and / or behind the rotating magnet, and with a temperature-dependent compensation element to compensate for a weakening of the rotating magnet's magnetic field and a reduction in the conductivity of the eddy current element with increased temperature , characterized by the fact that the compensation element (14-17) is designed to reduce go the second torque, transmitted by the torsion spring (11) to the indicator shaft (10), or to keep the first torque constant, transmitted to the eddy current element (9), with increased temperature.

BR9714020-1A 1996-12-12 1997-11-27 Eddy current measurement mechanism for an indicator instrument BR9714020A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19651614A DE19651614B4 (en) 1996-12-12 1996-12-12 Wirbelstrommeßwerk for a pointer instrument
PCT/EP1997/006608 WO1998026296A1 (en) 1996-12-12 1997-11-27 Eddy current measuring arrangement for an indicating instrument

Publications (1)

Publication Number Publication Date
BR9714020A true BR9714020A (en) 2000-05-09

Family

ID=7814431

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9714020-1A BR9714020A (en) 1996-12-12 1997-11-27 Eddy current measurement mechanism for an indicator instrument

Country Status (7)

Country Link
JP (1) JP2001510561A (en)
KR (1) KR100491154B1 (en)
CN (1) CN1120373C (en)
BR (1) BR9714020A (en)
DE (1) DE19651614B4 (en)
MY (1) MY127704A (en)
WO (1) WO1998026296A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015104455B4 (en) * 2015-03-25 2020-11-19 Lorenz Hasenbach GmbH u. Co KG Fall protection runner and safety system with such a fall protection runner
CN108474655B (en) * 2015-12-15 2020-08-28 天宝公司 Measuring instrument with an optical table that compensates for temperature changes
DE102016119576B4 (en) * 2016-10-13 2020-11-05 Lorenz Hasenbach GmbH u. Co KG Fall protection runner and safety system with fall protection runner
DE102016119575B4 (en) * 2016-10-13 2020-11-05 Lorenz Hasenbach GmbH u. Co KG Fall protection runner and safety system with fall protection runner

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE356364C (en) * 1922-07-20 Heinrich Wolfer Device for compensating the temperature error in eddy current tachometers
DE258719C (en) *
DE232C (en) * 1877-07-02 C. HÄRTUNG, Ingenieur, in Nordhausen Precision control influenced by the regulator
DE356C (en) * 1877-08-25 H. SEEGER in Seegerhall Hyacinth pot
DE1764687A1 (en) * 1968-07-17 1971-10-21 Krupp Gmbh Magnetic components for eddy current measuring purposes, in particular tachometers
DE2232422C2 (en) * 1972-07-01 1984-03-08 Max 5060 Bergisch Gladbach Baermann Eddy current tachometer with temp. compensation - has strip-shaped compensation element on magnetic bodys inner wall
DE3113234A1 (en) * 1981-04-02 1982-10-21 Vdo Adolf Schindling Ag, 6000 Frankfurt PERMANENT MAGNETIC BODY MADE OF PLASTIC-BONDED MAGNETIC MATERIAL, METHOD FOR THE PRODUCTION THEREOF AND VERBY CURRENT TACHOMETER WITH SUCH A PERMANENT MAGNETIC BODY

Also Published As

Publication number Publication date
DE19651614A1 (en) 1998-06-18
CN1120373C (en) 2003-09-03
MY127704A (en) 2006-12-29
WO1998026296A1 (en) 1998-06-18
KR100491154B1 (en) 2005-05-24
CN1240512A (en) 2000-01-05
JP2001510561A (en) 2001-07-31
DE19651614B4 (en) 2005-03-24
KR20000057319A (en) 2000-09-15

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Legal Events

Date Code Title Description
B06A Patent application procedure suspended [chapter 6.1 patent gazette]
B09A Decision: intention to grant [chapter 9.1 patent gazette]
B16A Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]

Free format text: PRAZO DE VALIDADE: 10 (DEZ) ANOS CONTADOS A PARTIR DE 15/01/2008, OBSERVADAS AS CONDICOES LEGAIS.

B24C Patent annual fee: request for for restoration

Free format text: REFERENTE A 13A, 14A E 15A ANUIDADE(S), CONFORME ART. 87 DA LPI 9.279.

B24H Lapse because of non-payment of annual fees (definitively: art 78 iv lpi)
B24F Patent annual fee: publication cancelled

Free format text: ANULADA A PUBLICACAO CODIGO 24.8 NA RPI NO 2257 DE 08/04/2014 POR TER SIDO INDEVIDA.

B21F Lapse acc. art. 78, item iv - on non-payment of the annual fees in time

Free format text: REFERENTE AS 13A, 14A E 15A ANUIDADES.

B24J Lapse because of non-payment of annual fees (definitively: art 78 iv lpi, resolution 113/2013 art. 12)

Free format text: EM VIRTUDE DA EXTINCAO PUBLICADA NA RPI 2606 DE 15-12-2020 E CONSIDERANDO AUSENCIA DE MANIFESTACAO DENTRO DOS PRAZOS LEGAIS, INFORMO QUE CABE SER MANTIDA A EXTINCAO DA PATENTE E SEUS CERTIFICADOS, CONFORME O DISPOSTO NO ARTIGO 12, DA RESOLUCAO 113/2013.