GB1534276A - Force transducers - Google Patents

Force transducers

Info

Publication number
GB1534276A
GB1534276A GB446575A GB446575A GB1534276A GB 1534276 A GB1534276 A GB 1534276A GB 446575 A GB446575 A GB 446575A GB 446575 A GB446575 A GB 446575A GB 1534276 A GB1534276 A GB 1534276A
Authority
GB
United Kingdom
Prior art keywords
resistors
reduced thickness
force
parallel
entrant portion
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
GB446575A
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.)
EMI Ltd
Original Assignee
EMI 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 EMI Ltd filed Critical EMI Ltd
Priority to GB446575A priority Critical patent/GB1534276A/en
Publication of GB1534276A publication Critical patent/GB1534276A/en
Expired 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
    • G01L1/20—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 Force In General (AREA)
  • Pressure Sensors (AREA)

Abstract

1534276 Force transducers EMI Ltd 2 Feb 1976 [1 Feb 1975 (2)] 4465/75 Heading G1N A force transducer includes a planar element in the form of a beam 6 with strain-sensing resistors 1-4 on its upper surface on reduced thickness portions 7, and having parallel limbs AD, BC and a re-entrant portion between them for application of a force at P, which portion projects into a central aperture. In use the beam is clamped along the edge AB and flexes substantially only in the portions 7 of reduced thickness (as shown in Fig. 2) where resistors 1, 2 are strained in the opposite sense to resistors 3, 4, these resistors being connected in a Wheatstone bridge circuit. In an alternative embodiment Piezo resistors 3-10 are provided on a semi-conductor beam 1 by differential doping. The beam is rigidly mounted along its edge AB and a force applied vertically downwards at P produces flexing at the reduced thickness areas 2 whereby resistors 5,6,7,8 are strained in the opposite sense to 3,4,9,10. In a further embodiment the parallel limbs and re-entrant portion each have four sections of reduced thickness and associated strain gauges, four gauges on each parallel limb and eight on the re-entrant portion, which is double the width of each parallel limb.
GB446575A 1976-02-02 1976-02-02 Force transducers Expired GB1534276A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB446575A GB1534276A (en) 1976-02-02 1976-02-02 Force transducers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB446575A GB1534276A (en) 1976-02-02 1976-02-02 Force transducers

Publications (1)

Publication Number Publication Date
GB1534276A true GB1534276A (en) 1978-11-29

Family

ID=9777702

Family Applications (1)

Application Number Title Priority Date Filing Date
GB446575A Expired GB1534276A (en) 1976-02-02 1976-02-02 Force transducers

Country Status (1)

Country Link
GB (1) GB1534276A (en)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2127161A (en) * 1982-09-03 1984-04-04 Endress Hauser Gmbh Co Transducer spring
GB2128806A (en) * 1982-09-29 1984-05-02 Itt Ind Ltd Pressure transducer
EP0126566A2 (en) * 1983-05-19 1984-11-28 Toledo Scale Corporation Load cell apparatus
GB2178541A (en) * 1985-06-24 1987-02-11 Tricolor Corp A weighing device
US4809552A (en) * 1987-11-23 1989-03-07 Allied-Signal, Inc. Multidirectional force-sensing transducer
US4836025A (en) * 1986-03-14 1989-06-06 Nissan Motor Co., Ltd. Accelerometer
US4848157A (en) * 1986-11-20 1989-07-18 Aisin Seiki Kabushiki Kaisha Acceleration detecting device
US4926689A (en) * 1986-08-25 1990-05-22 Hanson Richard A Proofmass suspension assembly for accelerometers
US5042301A (en) * 1986-08-25 1991-08-27 Hanson Richard A Pendulous assembly for use in an accelerometer
US5081867A (en) * 1988-09-30 1992-01-21 Nec Corporation Semiconductor sensor
GB2489246A (en) * 2011-03-22 2012-09-26 Illinois Tool Works Differential deflection measurement in structural members
CN107718047A (en) * 2017-08-21 2018-02-23 北京精密机电控制设备研究所 Light-duty mechanical arm self-adaption two-dimensional force feedback wrist connector and sensor

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2127161A (en) * 1982-09-03 1984-04-04 Endress Hauser Gmbh Co Transducer spring
US4548086A (en) * 1982-09-03 1985-10-22 Endress U. Hauser Gmbh U. Co. Deflecting spring
GB2128806A (en) * 1982-09-29 1984-05-02 Itt Ind Ltd Pressure transducer
EP0126566A2 (en) * 1983-05-19 1984-11-28 Toledo Scale Corporation Load cell apparatus
EP0126566A3 (en) * 1983-05-19 1985-09-18 Reliance Electric Company Load cell apparatus
GB2178541B (en) * 1985-06-24 1989-07-12 Tricolor Corp A weighing device
GB2178541A (en) * 1985-06-24 1987-02-11 Tricolor Corp A weighing device
US4836025A (en) * 1986-03-14 1989-06-06 Nissan Motor Co., Ltd. Accelerometer
US4926689A (en) * 1986-08-25 1990-05-22 Hanson Richard A Proofmass suspension assembly for accelerometers
US4955233A (en) * 1986-08-25 1990-09-11 Hanson Richard A Pendulous assembly for use in an accelerometer
US5042301A (en) * 1986-08-25 1991-08-27 Hanson Richard A Pendulous assembly for use in an accelerometer
US4848157A (en) * 1986-11-20 1989-07-18 Aisin Seiki Kabushiki Kaisha Acceleration detecting device
US4809552A (en) * 1987-11-23 1989-03-07 Allied-Signal, Inc. Multidirectional force-sensing transducer
US5081867A (en) * 1988-09-30 1992-01-21 Nec Corporation Semiconductor sensor
GB2489246A (en) * 2011-03-22 2012-09-26 Illinois Tool Works Differential deflection measurement in structural members
GB2489246B (en) * 2011-03-22 2015-10-28 Illinois Tool Works Differential deflection measurement in structural members
US9234809B2 (en) 2011-03-22 2016-01-12 Illinois Tool Works Inc. Differential deflection measurement in structural members
CN107718047A (en) * 2017-08-21 2018-02-23 北京精密机电控制设备研究所 Light-duty mechanical arm self-adaption two-dimensional force feedback wrist connector and sensor

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee