GB1388463A - Strain measuring device - Google Patents

Strain measuring device

Info

Publication number
GB1388463A
GB1388463A GB1936272A GB1936272A GB1388463A GB 1388463 A GB1388463 A GB 1388463A GB 1936272 A GB1936272 A GB 1936272A GB 1936272 A GB1936272 A GB 1936272A GB 1388463 A GB1388463 A GB 1388463A
Authority
GB
United Kingdom
Prior art keywords
oscillator
bridge
frequency
measuring device
strain gauges
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
GB1936272A
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.)
TINSLEY TELCON Ltd
Original Assignee
TINSLEY TELCON 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 TINSLEY TELCON Ltd filed Critical TINSLEY TELCON Ltd
Priority to GB1936272A priority Critical patent/GB1388463A/en
Publication of GB1388463A publication Critical patent/GB1388463A/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
    • G01L1/225—Measuring circuits therefor

Landscapes

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

Abstract

1388463 Strain measuring device TINSLEY TELCON Ltd 30 March 1973 [26 April 1972] 19362/72 Heading G1N A strain measuring device comprises two electrical resistance strain gauges R, arranged in a Wien bridge, as shown, an oscillator connected to the bridge and a calibrated means for establishing the frequency of the oscillator whereby the resistance of the strain gauges may be evaluated. As shown in Fig 1, a variable frequency oscillater 16 is provided, the calibrated means being a device for adjusting and displaying the frequency of the oscillator. A null-centre ammeter A is also provided to determine the bridge balance point. As shown in Fig 2, the bridge is arranged in the feedback of an oscillator formed by a differential amplifier 20 to form a Wien bridge oscillator, the calibrated means being provided by a frequency meter 21, preferably a digital read out meter. The capacitors and strain gauges may have equal and opposite temperature coefficients to provide temperature compensation.
GB1936272A 1972-04-26 1972-04-26 Strain measuring device Expired GB1388463A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1936272A GB1388463A (en) 1972-04-26 1972-04-26 Strain measuring device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1936272A GB1388463A (en) 1972-04-26 1972-04-26 Strain measuring device

Publications (1)

Publication Number Publication Date
GB1388463A true GB1388463A (en) 1975-03-26

Family

ID=10128085

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1936272A Expired GB1388463A (en) 1972-04-26 1972-04-26 Strain measuring device

Country Status (1)

Country Link
GB (1) GB1388463A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116679125A (en) * 2023-06-07 2023-09-01 海安市综合检验检测中心 Strain resistance measuring circuit device for generating measured signal by using multivibrator

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116679125A (en) * 2023-06-07 2023-09-01 海安市综合检验检测中心 Strain resistance measuring circuit device for generating measured signal by using multivibrator
CN116679125B (en) * 2023-06-07 2024-04-09 海安市综合检验检测中心 Strain resistance measuring circuit device for generating measured signal by using multivibrator

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Legal Events

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