EP2010881A2 - Dispositif dynamométrique - Google Patents

Dispositif dynamométrique

Info

Publication number
EP2010881A2
EP2010881A2 EP07722305A EP07722305A EP2010881A2 EP 2010881 A2 EP2010881 A2 EP 2010881A2 EP 07722305 A EP07722305 A EP 07722305A EP 07722305 A EP07722305 A EP 07722305A EP 2010881 A2 EP2010881 A2 EP 2010881A2
Authority
EP
European Patent Office
Prior art keywords
measuring device
force measuring
coils
sleeve
coil
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.)
Withdrawn
Application number
EP07722305A
Other languages
German (de)
English (en)
Inventor
Michael Schurr
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.)
Soehnle Professional GmbH and Co KG
Original Assignee
Soehnle Professional GmbH 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 Soehnle Professional GmbH and Co KG filed Critical Soehnle Professional GmbH and Co KG
Publication of EP2010881A2 publication Critical patent/EP2010881A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • G01L1/14—Measuring force or stress, in general by measuring variations in capacitance or inductance of electrical elements, e.g. by measuring variations of frequency of electrical oscillators
    • 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
    • G01D5/20—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 inductance, e.g. by a movable armature
    • G01D5/2006—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 inductance, e.g. by a movable armature by influencing the self-induction of one or more coils
    • G01D5/202—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 inductance, e.g. by a movable armature by influencing the self-induction of one or more coils by movable a non-ferromagnetic conductive element

Definitions

  • the invention relates to a force measuring device having at least two mutually stationary coils for detecting the movement and / or the position of a relative to the coils against the force of a spring device movably arranged electrically conductive and / or magnetic element.
  • DE 103 41 334 A1 discloses a force measuring device, in particular for vehicle seats, having an inductive sensor, in which a coil core is moved relative to a coil.
  • DE 44 20 691 discloses a load cell in which the change in the effective permeability due to the eddy current effect and a change in the impedance caused thereby in a coil is measured.
  • DE 1001 20 978 A1 discloses a device for measuring the weight of a person sitting on a vehicle seat with a force transducer which operates on the eddy current principle.
  • the force transducer is operated so that frequency-analogue Weighing signals can be generated.
  • the object is achieved by a force measuring device, which is characterized in that the at least two coils are each assigned to a separate electrical measuring circuit.
  • the force measuring device has the advantage that a more accurate measurement result is achieved.
  • At least one of the coils is designed as a flat coil and / or flat coil and / or worm coil. It can be provided that at least one of the coils is arranged on a circuit board and / or a conductor track arranged on a circuit board forms the coil.
  • one of the coils is designed as etched flat coil.
  • the measurement of the movement and / or the position of the element can first be carried out with a first electrical measuring circuit associated with a coil and, subsequently, the measurement of the movement and / or the position of the element with another coil associated second electrical measuring circuit is feasible. As a result, a mutual influence of the measurements is effectively avoided.
  • the voltages induced in the coils are preferably readable one after the other.
  • a differential measurement can be carried out.
  • At least one of the coils is permanently and / or temporarily traversed by alternating current.
  • an eddy current is flown in the element.
  • the coils are shielded relative to each other electromagnetically and / or electrostatically.
  • the coils are shielded by the element relative to each other electromagnetically and / or electrostatically.
  • the element is in an advantageous embodiment at least partially made of copper.
  • the element is designed in an advantageous embodiment as a test coil.
  • two coils are arranged opposite one another.
  • two further coils - preferably assigned to a further measuring circuit in each case - may be provided opposite one another.
  • the two further coils are arranged offset by 90 degrees to the two coils.
  • the at least two coils are each arranged on a carrier.
  • the carrier and the spring device are manufactured together in one piece. It can also be provided that the element and the spring device are made together in one piece. It can also be provided that the element and the spring device and the carrier are made together in one piece.
  • a housing is provided.
  • the coils are fixedly connected to a first sleeve. It can also be provided that the element is fixedly connected to a second sleeve. Preferably, the first sleeve and the second sleeve project into one another.
  • first sleeve and the second sleeve - preferably projecting into one another - form a housing.
  • an overload protection is provided.
  • an annular gap between the first sleeve and the second sleeve defines or delimits the range of mobility of the coils relative to the element, in particular as overload protection.
  • O-ring seal - is provided.
  • the force measuring device may include a rotating part.
  • the spring device and / or the sleeves can be produced as turned parts.
  • the force measuring device according to the invention can be used particularly advantageously in a motor vehicle seat and / or a motor vehicle, in particular for measuring the weight of a seated person.
  • Fig. 1 shows a force measuring device according to the invention in a perspective
  • FIG. 3 the force measuring device according to the invention in a perspective

Abstract

Dispositif dynamométrique qui comporte au moins deux bobines fixes l'une par rapport à l'autre pour la détection du mouvement et / ou de la position d'un élément électroconducteur et / ou magnétique mobile par rapport aux bobines contre la force d'un dispositif ressort. Chaque bobine est placée dans un circuit de mesure électrique propre.
EP07722305A 2006-04-26 2007-04-26 Dispositif dynamométrique Withdrawn EP2010881A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006020051A DE102006020051A1 (de) 2006-04-26 2006-04-26 Kraftmessvorrichtung
PCT/DE2007/000747 WO2007121740A2 (fr) 2006-04-26 2007-04-26 Dispositif dynamométrique

Publications (1)

Publication Number Publication Date
EP2010881A2 true EP2010881A2 (fr) 2009-01-07

Family

ID=38519672

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07722305A Withdrawn EP2010881A2 (fr) 2006-04-26 2007-04-26 Dispositif dynamométrique

Country Status (5)

Country Link
US (1) US7908933B2 (fr)
EP (1) EP2010881A2 (fr)
JP (1) JP2009534675A (fr)
DE (1) DE102006020051A1 (fr)
WO (1) WO2007121740A2 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130072982A1 (en) * 2011-09-19 2013-03-21 Peter Melott Simonson Spinal assembly load gauge

Family Cites Families (25)

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Publication number Priority date Publication date Assignee Title
JPS4941329Y1 (fr) * 1969-05-19 1974-11-13
US3864614A (en) * 1970-08-12 1975-02-04 Foxboro Co Electro-magnetic position transducer for a thermo-electric linear motor force rebalance system
US5109701A (en) * 1989-04-03 1992-05-05 Sarcos Group Field-based movement sensor
JPH0566101A (ja) * 1991-09-06 1993-03-19 Komatsu Ltd 位置検出装置
JP3240390B2 (ja) * 1992-03-04 2001-12-17 オムロン株式会社 変位検出センサ
JPH07128116A (ja) * 1993-10-28 1995-05-19 Shimadzu Corp 荷重検出装置
DE4420691C1 (de) 1994-06-14 1996-01-18 Bizerba Gmbh & Co Kg Kraftmeßzelle
JP3629751B2 (ja) * 1995-04-14 2005-03-16 ソニー株式会社 自動バフ研磨装置
JP4441593B2 (ja) * 1996-03-16 2010-03-31 株式会社アミテック 荷重計
JP3920896B2 (ja) * 1996-03-16 2007-05-30 株式会社アミテック リニア位置検出装置
JP3844316B2 (ja) * 1997-06-19 2006-11-08 本田技研工業株式会社 波動減速機における伝達トルク検出装置
JP4217321B2 (ja) * 1997-12-26 2009-01-28 ヤマハ発動機株式会社 荷重検出装置
JP2000028450A (ja) * 1998-07-09 2000-01-28 Mitsubishi Electric Corp トルク検出装置
DE19918993A1 (de) 1999-03-23 2000-09-28 Daimler Chrysler Ag Vorrichtung mit einem elektromagnetischen Aktuator
US6666784B1 (en) * 1999-10-06 2003-12-23 Ntn Corporation Piston rod piston detector, autotensioner and belt tension adjuster
JP2001336995A (ja) * 2000-05-30 2001-12-07 Mitsubishi Electric Corp トルク検出装置
DE10141764A1 (de) 2000-10-20 2002-06-27 Micro Epsilon Messtechnik Vorrichtung und Verfahren zur Detektion der Position eines Objekts
EP1340047A1 (fr) 2000-12-08 2003-09-03 Micro-Epsilon Messtechnik GmbH & Co. KG Dispositif et procede de detection de la position d'une cible
JP3884274B2 (ja) * 2000-12-15 2007-02-21 古河電気工業株式会社 回転センサ
DE10120978A1 (de) 2001-05-01 2002-11-14 Bizerba Gmbh & Co Kg Vorrichtung und Verfahren zur Erfassung und Aufbereitung von auf einen Fahrzeugsitz wirkenden Gewichtskräften
JP2001336998A (ja) * 2001-06-01 2001-12-07 Mitsubishi Materials Corp 磁歪式応力検出装置
DE10313021B3 (de) 2003-03-24 2004-09-02 Siemens Ag Schaltungsanordnung mit einem linear veränderlichen differentiellen Transformator (LVDT) als Weg- oder Kraftsensor und Verfahren zum Betreiben einer solchen Schaltungsanordnung
WO2004102370A2 (fr) 2003-05-14 2004-11-25 Sensopad Limited Appareil de detection
JP2007526994A (ja) * 2003-08-12 2007-09-20 ジュン パク，フン 弾性構造物と誘導電圧を用いたゲージを含む荷重測定トランスデューサ、及びそのトランスデューサを用いた荷重測定システム
DE10341334A1 (de) 2003-09-08 2005-04-14 Siemens Ag Kraftmessvorrichtung

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2007121740A2 *

Also Published As

Publication number Publication date
JP2009534675A (ja) 2009-09-24
DE102006020051A1 (de) 2007-11-08
WO2007121740A2 (fr) 2007-11-01
WO2007121740A3 (fr) 2007-12-06
US7908933B2 (en) 2011-03-22
US20090095090A1 (en) 2009-04-16

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