GB839121A - Improvements in and relating to load measuring apparatus - Google Patents

Improvements in and relating to load measuring apparatus

Info

Publication number
GB839121A
GB839121A GB1885456A GB1885456A GB839121A GB 839121 A GB839121 A GB 839121A GB 1885456 A GB1885456 A GB 1885456A GB 1885456 A GB1885456 A GB 1885456A GB 839121 A GB839121 A GB 839121A
Authority
GB
United Kingdom
Prior art keywords
gauges
strain
compensating
cylinder
load
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.)
Expired
Application number
GB1885456A
Inventor
Octavius Hunt Critchley
Albert Edward Bennett
William Albert Sammons
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.)
Coal Industry Patents Ltd
Original Assignee
Coal Industry Patents Ltd
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 Coal Industry Patents Ltd filed Critical Coal Industry Patents Ltd
Priority to GB1885456A priority Critical patent/GB839121A/en
Publication of GB839121A publication Critical patent/GB839121A/en
Expired 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
    • G01G3/142—Circuits specially adapted therefor
    • 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
    • G01G3/1404—Special supports with preselected places to mount the resistance strain gauges; Mounting of supports combined with means to connect the strain gauges on electrical bridges
    • 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
    • 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)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)

Abstract

839,121. Load cells. COAL INDUSTRY (PATENTS) Ltd. June 17, 1957 [June 18, 1956], No. 18854/56. Class 40 (1). An electrical resistance strain gauge load cell is fitted with two sets of electrical strain gauges (active gauges and compensating gauges) and the compensating strain gauges are so arranged and so connected in the electrical circuit of the active gauges that the output signal of the cell is substantially independent of the manner in which the load is supplied to the cell. Fig. 1 shows a load cell (adapted for use with a pit prop by means of lugs F on plate A and cut out corners on plate B) in which the strain gauges are mounted on the sides of a cylindrical member D. The active gauges M are mounted axially and the compensating gauges N are mounted circumferentially with respect to the cylinder. The gauges are connected in a bridge circuit as shown in Fig. 2. It is stated that when a load is applied to the cylinder firstly in a generally distributed manner and then in a concentrated manner at the sides of the cylinder there are two regions in which the change in circumferential strain is zero and the compensating gauges should be situated near one of these regions. A method of locating a region of minimum circumferential strain is described in which three sets of " compensating " gauges are placed at different axial position on the cylinder. The strain at each of these points is measured and the position of minimum strain is extrapolated from the measurement. The Specification mentions that the compensating gauges may also give an automatic temperature correction.
GB1885456A 1956-06-18 1956-06-18 Improvements in and relating to load measuring apparatus Expired GB839121A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1885456A GB839121A (en) 1956-06-18 1956-06-18 Improvements in and relating to load measuring apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1885456A GB839121A (en) 1956-06-18 1956-06-18 Improvements in and relating to load measuring apparatus

Publications (1)

Publication Number Publication Date
GB839121A true GB839121A (en) 1960-06-29

Family

ID=10119546

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1885456A Expired GB839121A (en) 1956-06-18 1956-06-18 Improvements in and relating to load measuring apparatus

Country Status (1)

Country Link
GB (1) GB839121A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0067664A2 (en) * 1981-06-12 1982-12-22 Reliance Electric Company Compensated load cell
WO2000050856A1 (en) * 1999-02-24 2000-08-31 Siemens Automotive Corporation Method and apparatus for sensing seat occupant weight
CN110260954A (en) * 2019-07-20 2019-09-20 徐州工程学院 Band enhancing signal high precision cabochon resistance wire sensor device and method
CN112556806A (en) * 2020-12-25 2021-03-26 中国航天空气动力技术研究院 Force-measuring weighing sensor

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0067664A2 (en) * 1981-06-12 1982-12-22 Reliance Electric Company Compensated load cell
EP0067664A3 (en) * 1981-06-12 1984-06-06 Reliance Electric Company Compensated load cell
WO2000050856A1 (en) * 1999-02-24 2000-08-31 Siemens Automotive Corporation Method and apparatus for sensing seat occupant weight
US6557424B1 (en) 1999-02-24 2003-05-06 Siemens Vdo Automotive Corporation Method and apparatus for sensing seat occupant weight
CN110260954A (en) * 2019-07-20 2019-09-20 徐州工程学院 Band enhancing signal high precision cabochon resistance wire sensor device and method
CN110260954B (en) * 2019-07-20 2024-04-16 徐州工程学院 Method for measuring high-precision cambered surface type resistance wire sensor device with enhanced signal
CN112556806A (en) * 2020-12-25 2021-03-26 中国航天空气动力技术研究院 Force-measuring weighing sensor

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