FI105721B - Givare för att mäta belastningar - Google Patents

Givare för att mäta belastningar Download PDF

Info

Publication number
FI105721B
FI105721B FI954345A FI954345A FI105721B FI 105721 B FI105721 B FI 105721B FI 954345 A FI954345 A FI 954345A FI 954345 A FI954345 A FI 954345A FI 105721 B FI105721 B FI 105721B
Authority
FI
Finland
Prior art keywords
base plate
sensor
protective
deformation
protective housing
Prior art date
Application number
FI954345A
Other languages
English (en)
Finnish (fi)
Other versions
FI954345A (sv
FI954345A0 (sv
Inventor
Vesa Koivisto
Jari Sundqvist
Original Assignee
Vesa Koivisto
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 Vesa Koivisto filed Critical Vesa Koivisto
Priority to FI954345A priority Critical patent/FI105721B/sv
Publication of FI954345A0 publication Critical patent/FI954345A0/sv
Priority to EP96931074A priority patent/EP0880673A1/en
Priority to PCT/FI1996/000488 priority patent/WO1997010486A1/en
Priority to US09/029,998 priority patent/US6082203A/en
Publication of FI954345A publication Critical patent/FI954345A/sv
Application granted granted Critical
Publication of FI105721B publication Critical patent/FI105721B/sv

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
    • G01L1/20—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
    • G01L1/225—Measuring circuits therefor
    • G01L1/2256—Measuring circuits therefor involving digital counting
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
    • G01B7/16—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring the deformation in a solid, e.g. by resistance strain gauge
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01G—WEIGHING
    • G01G19/00—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups
    • G01G19/08—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups for incorporation in vehicles
    • G01G19/12—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups for incorporation in vehicles having electrical weight-sensitive devices
    • 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
    • G01L1/2206—Special supports with preselected places to mount the resistance strain gauges; Mounting of supports
    • G01L1/2231—Special supports with preselected places to mount the resistance strain gauges; Mounting of supports the supports being disc- or ring-shaped, adapted for measuring a force along a single direction

Landscapes

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

Claims (6)

1. Givare för att mätä belastningar iimefattande en formförändringsenhet (1; 11; 21. som mäter formförändringar i en konstruktion och innefattar ett formföränd-ringselement, säsom ett i och för sig känt töjningsgivarelement (6; 16; 26) och ett 5 skyddshölje (2; 12; 22) i vilket formförändringsenheten (1; 11; 21) inpassats och in-nefattande en basplatta (3; 13; 23) och ett skyddshölje (4; 14; 24), kännetecknad av att - basplattan (3; 13; 23) företrädesvis har formen av en cirkelskiva, fyrkant eller en tili attkant modiflerad fyrkant eller en liknande plansymmetrisk skiva beträffande tre 10 axlar; -formförändringsenheten (1; 11; 21), särskilt töjningsgivarelementet (6; 16; 26) är fastmonterad inom mittomrädet av basplattan (3; 13; 23), företrädesvis i mitten; och - skyddshöljet (4; 14; 24) har anpassats runt formförändringsenheten (1; 11; 21) pä basplattan (3; 13; 23) inom mittomrädet av basplattan sä att utanför skyddshöljet 15 hamnar basplattans randomräde (3a; 13a; 23a) där givaren kan fästas, företrädesvis genom att svetsa, vid konstruktionens mätpunkt.
2. Givare enligt patentkrav 1, kännetecknad av att skyddshöljets (2; 12; 22) basplatta (3; 13; 23) och skyddshöljet (4; 14; 24) är av metallplät, företrädesvis stälplät.
3. Givare enligt patentkrav 1 eller 2, kännetecknad av att formförändringsenhe-20 ten (21) innefattar en kretsskiva (33) i vars mittomräde, företrädesvis i mitten, töjningsgivarelementet (26) är fast monterat och kretsskivan (33) är fast monterad inom mittomrädet, företrädesvis i mitten av skyddshöljets (22) basplatta (23), och pä kretsskivan (33) har även anpassats elektroniska enheter (27, 28) för förhandsbe-handling av mätdata.
4. Givare enligt patentkrav 1, 2 eller 3, kännetecknad av att formförändringsen heten (21) innefattar en A/D-omvandlare (27) och en databehandlingsenhet, säsom en mikroprocessor (28), för att omvandla ett analogt mätmeddelande tili ett digitalt och för förhansdbehandling av mätdata.
5. Givare enligt nägot av föregäende patentkrav, kännetecknad av att skydds-30 höljet (4; 14; 24) fyllts med skyddsmassa (5; 15; 25).
• ^ 6. Givare enligt patentkrav 5, kännetecknad av att skyddshöljet (4; 14; 24) fast- monterats vid basplattan (3; 13; 23) med hjälp av skyddsmassan (5; 15; 25).
FI954345A 1995-09-15 1995-09-15 Givare för att mäta belastningar FI105721B (sv)

Priority Applications (4)

Application Number Priority Date Filing Date Title
FI954345A FI105721B (sv) 1995-09-15 1995-09-15 Givare för att mäta belastningar
EP96931074A EP0880673A1 (en) 1995-09-15 1996-09-16 Sensing element for measuring loads
PCT/FI1996/000488 WO1997010486A1 (en) 1995-09-15 1996-09-16 Sensing element for measuring loads
US09/029,998 US6082203A (en) 1995-09-15 1996-09-16 Sensing element for measuring loads

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI954345A FI105721B (sv) 1995-09-15 1995-09-15 Givare för att mäta belastningar
FI954345 1995-09-15

Publications (3)

Publication Number Publication Date
FI954345A0 FI954345A0 (sv) 1995-09-15
FI954345A FI954345A (sv) 1997-03-16
FI105721B true FI105721B (sv) 2000-09-29

Family

ID=8544029

Family Applications (1)

Application Number Title Priority Date Filing Date
FI954345A FI105721B (sv) 1995-09-15 1995-09-15 Givare för att mäta belastningar

Country Status (4)

Country Link
US (1) US6082203A (sv)
EP (1) EP0880673A1 (sv)
FI (1) FI105721B (sv)
WO (1) WO1997010486A1 (sv)

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FR2774858B1 (fr) * 1998-02-18 2000-05-05 Lucas Sa G Dispositif d'assistance a l'usage des operateurs pour machines de distribution de produits alimentaires, du genre desileuses-melangeuses-distributrices
FI107193B (sv) 1999-06-03 2001-06-15 Rouvari Oy R Mätningsgivare
US7004040B2 (en) * 2003-12-18 2006-02-28 Avery Weigh-Tronix, Llc Support structure for a load-bearing device
ES2283159B1 (es) * 2004-01-13 2008-08-16 Miguel Luis Cabral Martin Procedimiento de medida de la resistencia y fatiga en estructuras dinamicas, sometidas a deformacion y dispositivo de medicion para su puesta en practica.
US7461560B2 (en) * 2005-03-28 2008-12-09 Microstrain, Inc. Strain gauge with moisture barrier and self-testing circuit
GB0428378D0 (en) * 2004-12-24 2005-02-02 Airbus Uk Ltd Apparatus and method for measuring loads sustained by a bearing pin
US7953559B2 (en) * 2005-04-28 2011-05-31 Caterpillar Inc. Systems and methods for maintaining load histories
US7487066B2 (en) * 2005-04-28 2009-02-03 Caterpillar Inc. Classifying a work machine operation
US7472599B2 (en) * 2006-06-30 2009-01-06 Caterpillar Inc. Strain sensing device
US7908928B2 (en) * 2006-10-31 2011-03-22 Caterpillar Inc. Monitoring system
GB0806918D0 (en) * 2008-04-16 2008-05-21 Airbus Uk Ltd Method and apparatus for monitoring a structure
CN102183202A (zh) * 2011-03-31 2011-09-14 中国矿业大学 一种井壁变形传感器及其测试方法
JP6252444B2 (ja) * 2014-11-21 2017-12-27 アイシン精機株式会社 荷重検出装置
EP3379222B1 (en) 2017-03-22 2020-12-30 Methode Electronics Malta Ltd. Magnetoelastic based sensor assembly
US11084342B2 (en) 2018-02-27 2021-08-10 Methode Electronics, Inc. Towing systems and methods using magnetic field sensing
US11135882B2 (en) 2018-02-27 2021-10-05 Methode Electronics, Inc. Towing systems and methods using magnetic field sensing
US11014417B2 (en) 2018-02-27 2021-05-25 Methode Electronics, Inc. Towing systems and methods using magnetic field sensing
US11491832B2 (en) 2018-02-27 2022-11-08 Methode Electronics, Inc. Towing systems and methods using magnetic field sensing
US11221262B2 (en) 2018-02-27 2022-01-11 Methode Electronics, Inc. Towing systems and methods using magnetic field sensing
WO2019168565A1 (en) 2018-02-27 2019-09-06 Methode Electronics,Inc. Towing systems and methods using magnetic field sensing
DE102018216745B4 (de) * 2018-09-28 2020-09-03 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Messeinrichtung zur Messung von Materialdehnungen

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US3270554A (en) * 1961-01-04 1966-09-06 Bell Telephone Labor Inc Diffused layer transducers
GB1333167A (en) * 1971-02-23 1973-10-10 Peak Components Ltd Strain measuremenet
DE2351810A1 (de) * 1973-10-16 1975-04-24 Philips Patentverwaltung Dehnungs-messwertaufnehmer
US3986012A (en) * 1974-05-02 1976-10-12 Reliance Electric Company Digital weight measuring and computing apparatus with automatic zero correction
US3986254A (en) * 1974-10-09 1976-10-19 Consearch Ab Encased strain gauge
GB1530125A (en) * 1974-11-27 1978-10-25 Cl Instr Ltd Axle load monitoring systems
JPS5197457A (en) * 1975-02-22 1976-08-27 Yunitsutogata hizumigeeji
DE2901995A1 (de) * 1979-01-19 1980-07-31 Erich Brosa Dehnungsmesser zum anschweissen
US4375243A (en) * 1981-03-30 1983-03-01 Doll W Gary Wide range high accuracy weighing and counting scale
AU547838B2 (en) * 1982-10-26 1985-11-07 Ishida Koki Seisakusho K.K. Load cell
US4549439A (en) * 1984-06-19 1985-10-29 Colt Industries Operating Corp Moistureproof load cell for food processing applications and method for making the same
US5002141A (en) * 1989-12-08 1991-03-26 Toledo Scale Corporation Vehicle weighing in motion apparatus and method
FR2664458A1 (fr) * 1990-07-06 1992-01-10 Philips Electronique Lab Table chauffante.
US5442146A (en) * 1992-04-03 1995-08-15 Weigh-Tronix, Inc. Counting scale and load cell assembly therefor
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FR2701317B1 (fr) * 1993-02-09 1995-03-31 Thomson Csf Dispositif de mesure d'efforts exercés sur une pièce mécanique et procédé de fixation.

Also Published As

Publication number Publication date
FI954345A (sv) 1997-03-16
EP0880673A1 (en) 1998-12-02
US6082203A (en) 2000-07-04
FI954345A0 (sv) 1995-09-15
WO1997010486A1 (en) 1997-03-20

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Owner name: SAVCOR GROUP LIMITED

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