FR2280888A1 - Measurement of weight - uses strain gauges to detect deformation of a supported bar when loaded - Google Patents

Measurement of weight - uses strain gauges to detect deformation of a supported bar when loaded

Info

Publication number
FR2280888A1
FR2280888A1 FR7426939A FR7426939A FR2280888A1 FR 2280888 A1 FR2280888 A1 FR 2280888A1 FR 7426939 A FR7426939 A FR 7426939A FR 7426939 A FR7426939 A FR 7426939A FR 2280888 A1 FR2280888 A1 FR 2280888A1
Authority
FR
France
Prior art keywords
bar
strain gauges
loaded
measurement
weight
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.)
Granted
Application number
FR7426939A
Other languages
French (fr)
Other versions
FR2280888B1 (en
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.)
NEIGH TRONIX Inc
Original Assignee
NEIGH TRONIX Inc
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 NEIGH TRONIX Inc filed Critical NEIGH TRONIX Inc
Priority to FR7426939A priority Critical patent/FR2280888A1/en
Publication of FR2280888A1 publication Critical patent/FR2280888A1/en
Application granted granted Critical
Publication of FR2280888B1 publication Critical patent/FR2280888B1/fr
Granted legal-status Critical Current

Links

Classifications

    • 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
    • G01G3/1402—Special supports with preselected places to mount the resistance strain gauges; Mounting of supports
    • G01G3/1406—Special supports with preselected places to mount the resistance strain gauges; Mounting of supports combined with special measuring circuits
    • 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
    • G01L1/2218—Special supports with preselected places to mount the resistance strain gauges; Mounting of supports the supports being of the column type, e.g. cylindric, adapted for measuring a force along a single direction
    • G01L1/2225—Special supports with preselected places to mount the resistance strain gauges; Mounting of supports the supports being of the column type, e.g. cylindric, adapted for measuring a force along a single direction the direction being perpendicular to the central axis
    • 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
    • G01L1/2262—Measuring circuits therefor involving simple electrical bridges

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Force In General (AREA)
  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)

Abstract

An approximately straight bar with linear elastic deformation characteristics when a load is applied, is supported at the ends. The bar is free to move in an axis perpendicular to the longitudinal axis. Groups of strain gauges are mounted on the bar between the load point in the centre and the supports. These detect deformation in the bar due to loading. The gauges are arranged in a bridge network to generate a signal representing the applied load amplitude.
FR7426939A 1974-08-02 1974-08-02 Measurement of weight - uses strain gauges to detect deformation of a supported bar when loaded Granted FR2280888A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7426939A FR2280888A1 (en) 1974-08-02 1974-08-02 Measurement of weight - uses strain gauges to detect deformation of a supported bar when loaded

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7426939A FR2280888A1 (en) 1974-08-02 1974-08-02 Measurement of weight - uses strain gauges to detect deformation of a supported bar when loaded

Publications (2)

Publication Number Publication Date
FR2280888A1 true FR2280888A1 (en) 1976-02-27
FR2280888B1 FR2280888B1 (en) 1976-12-31

Family

ID=9142051

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7426939A Granted FR2280888A1 (en) 1974-08-02 1974-08-02 Measurement of weight - uses strain gauges to detect deformation of a supported bar when loaded

Country Status (1)

Country Link
FR (1) FR2280888A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2424523A1 (en) * 1978-04-26 1979-11-23 Perrier Gerard Weighing instrument using strain gauges - has flexible blade mounted on two rubber blocks acting as spacers
EP0038589A1 (en) * 1980-04-03 1981-10-28 Bavaria B.V. Device for determining the quantity of the contents of a tank
DE10231472A1 (en) * 2002-07-12 2004-01-22 Hottinger Baldwin Messtechnik Gmbh Weighing cell for weighbridges has moment free bending spring with load transfer spike and underside shaped to reduce moment transfer.

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE552383A (en) *
FR988667A (en) * 1949-04-12 1951-08-30 Sncaso Dynamometer and its applications
US2899191A (en) * 1959-08-11 Electrically actuated weighing device
DE1275783B (en) * 1962-09-27 1968-08-22 Sands Measurement Corp Weighing device for rail vehicles
DE1948159A1 (en) * 1968-10-25 1970-05-06 Zaklady Mechaniczne Im M Nowot Device for measuring the distribution of the pressure exerted by rings, in particular piston rings, on a cylinder running surface
DE2147869A1 (en) * 1971-09-24 1973-03-29 Siemens Ag METHOD AND DEVICE FOR MEASURING CONTROLLER CHARACTERISTICS OF CENTRIFUGAL BRAKE CONTROLLERS

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE552383A (en) *
US2899191A (en) * 1959-08-11 Electrically actuated weighing device
FR988667A (en) * 1949-04-12 1951-08-30 Sncaso Dynamometer and its applications
DE1275783B (en) * 1962-09-27 1968-08-22 Sands Measurement Corp Weighing device for rail vehicles
DE1948159A1 (en) * 1968-10-25 1970-05-06 Zaklady Mechaniczne Im M Nowot Device for measuring the distribution of the pressure exerted by rings, in particular piston rings, on a cylinder running surface
DE2147869A1 (en) * 1971-09-24 1973-03-29 Siemens Ag METHOD AND DEVICE FOR MEASURING CONTROLLER CHARACTERISTICS OF CENTRIFUGAL BRAKE CONTROLLERS

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
REVUE DT AUTOMATIK MESSEN UND PRUEFEN, VOL. 9, NO 11, NOVEMBRE 1973, PAGES 709 A 713. R. KAUTSCH, "MECHANISCHE AUFNEHMER FUR ELEKTRISCHE MESSUNGEN".) *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2424523A1 (en) * 1978-04-26 1979-11-23 Perrier Gerard Weighing instrument using strain gauges - has flexible blade mounted on two rubber blocks acting as spacers
EP0038589A1 (en) * 1980-04-03 1981-10-28 Bavaria B.V. Device for determining the quantity of the contents of a tank
DE10231472A1 (en) * 2002-07-12 2004-01-22 Hottinger Baldwin Messtechnik Gmbh Weighing cell for weighbridges has moment free bending spring with load transfer spike and underside shaped to reduce moment transfer.

Also Published As

Publication number Publication date
FR2280888B1 (en) 1976-12-31

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Legal Events

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