GB1111145A - Improvements in or relating to indicating and/or measuring devices - Google Patents

Improvements in or relating to indicating and/or measuring devices

Info

Publication number
GB1111145A
GB1111145A GB36681/65A GB3668165A GB1111145A GB 1111145 A GB1111145 A GB 1111145A GB 36681/65 A GB36681/65 A GB 36681/65A GB 3668165 A GB3668165 A GB 3668165A GB 1111145 A GB1111145 A GB 1111145A
Authority
GB
United Kingdom
Prior art keywords
plate
photo
apertures
directed
aug
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
GB36681/65A
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.)
Sintef AS
Original Assignee
Sintef AS
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 Sintef AS filed Critical Sintef AS
Publication of GB1111145A publication Critical patent/GB1111145A/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
    • G01L9/00—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means
    • G01L9/0041—Transmitting or indicating the displacement of flexible diaphragms
    • G01L9/0076—Transmitting or indicating the displacement of flexible diaphragms using photoelectric means
    • G01L9/0077—Transmitting or indicating the displacement of flexible diaphragms using photoelectric means for measuring reflected light
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/26—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light
    • G01D5/28—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with deflection of beams of light, e.g. for direct optical indication
    • G01D5/30—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with deflection of beams of light, e.g. for direct optical indication the beams of light being detected by photocells

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Fluid Pressure (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
  • Length Measuring Devices By Optical Means (AREA)

Abstract

1,111,145. Photo-electric plate deflection measurement. SINTEF. Aug. 26, 1965 [Aug. 28, 1964], No. 36681/65. Heading G1A. In a device for measuring the deflection, or an excursion of a membrane or firmly clamped or freely suspended elastic plate 5, Fig. 1, comprising a light source 1, two or more lightsensitive elements 8, 9 and an optical system with lenses 2, 7 and screens 3, 6 provided with slot apertures for rays from the source which are directed against diametrically opposite regions or pairs of regions on the surface of the plate or diaphragm, reflected images of the apertures are directed on to respective screens in a manner partly to overlie the apertures therein and to fall on respective detectors positioned behind them. The reflected images may be directed on to the screen opposite to the ones forming them. The detectors may be photo-resistors or photo-diodes and may be connected in a bridge including two further resistors or two further sensitors which may be on another diameter. The arrangement may be adjusted to respond to plane distance without being affected by rotation, or vice versa, the effects of source variation being self cancelling. The arrangement described may be used as a microphone, or in combination with other plate moving arrangements as a pressure transducer. The plate may be deflected electromagnetically or electro-statically to measure current or voltage. The sensitor may be a photographic strip for recording sound.
GB36681/65A 1964-08-28 1965-08-26 Improvements in or relating to indicating and/or measuring devices Expired GB1111145A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NO15455864 1964-08-28

Publications (1)

Publication Number Publication Date
GB1111145A true GB1111145A (en) 1968-04-24

Family

ID=19909026

Family Applications (1)

Application Number Title Priority Date Filing Date
GB36681/65A Expired GB1111145A (en) 1964-08-28 1965-08-26 Improvements in or relating to indicating and/or measuring devices

Country Status (5)

Country Link
BE (1) BE668867A (en)
DE (1) DE1272005B (en)
ES (1) ES316857A1 (en)
GB (1) GB1111145A (en)
NL (1) NL6511262A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2154730A (en) * 1984-02-21 1985-09-11 Standard Telephones Cables Ltd Liquid level sensing
GB2188722A (en) * 1986-04-05 1987-10-07 Michael Roderick Oliver Optical transducer
DE4446760A1 (en) * 1994-12-24 1996-06-27 Sensor Instr Gmbh Measuring system for measuring deformations of basic body with light source

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3533699A (en) * 1968-07-23 1970-10-13 Hopkins Mfg Corp System of alignment particularly suitable for use in automotive applications
DE2937485A1 (en) * 1979-09-17 1981-06-19 Siemens AG, 1000 Berlin und 8000 München OPTICAL DEVICE FOR MEASURING LOW PRESSURE DIFFERENCES BY MEANS OF LIGHT INTENSITY CHANGE

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE699054C (en) * 1935-10-13 1940-11-21 Maihak Akt Ges H Calibration and monitoring device on devices for measuring mechanical forces and moments

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2154730A (en) * 1984-02-21 1985-09-11 Standard Telephones Cables Ltd Liquid level sensing
GB2188722A (en) * 1986-04-05 1987-10-07 Michael Roderick Oliver Optical transducer
DE4446760A1 (en) * 1994-12-24 1996-06-27 Sensor Instr Gmbh Measuring system for measuring deformations of basic body with light source
US5656783A (en) * 1994-12-24 1997-08-12 Sensor Instruments Gmbh Optical apparatus for measuring deformation of a body

Also Published As

Publication number Publication date
ES316857A1 (en) 1966-03-01
NL6511262A (en) 1966-03-01
DE1272005B (en) 1968-07-04
BE668867A (en)

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