GB1419413A - - Google Patents

Info

Publication number
GB1419413A
GB1419413A GB2308673A GB2308673A GB1419413A GB 1419413 A GB1419413 A GB 1419413A GB 2308673 A GB2308673 A GB 2308673A GB 2308673 A GB2308673 A GB 2308673A GB 1419413 A GB1419413 A GB 1419413A
Authority
GB
United Kingdom
Prior art keywords
roller
movement
bar
marks
photo
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
GB2308673A
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 filed Critical
Priority to GB2308673A priority Critical patent/GB1419413A/en
Publication of GB1419413A publication Critical patent/GB1419413A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • G01D5/32—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 attenuation or whole or partial obturation of beams of light
    • G01D5/34—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 attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells
    • G01D5/36—Forming the light into pulses
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B3/00—Measuring instruments characterised by the use of mechanical techniques
    • G01B3/12—Measuring wheels
    • 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
    • G01D5/262—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 optical projection of a pointer or a scale

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Length Measuring Devices By Optical Means (AREA)

Abstract

1419413 Distance measurement DIGITECH INSTRUMENTS Ltd 15 May 1973 23086/73 Headings G1A and G1M The movement of a device along a reference bar 11 is measured by photo-electrically sensing the rotation of a roller 31 which engages the bar. The roller can be moved in a direction arrows A, Fig. 3 transverse to the direction of movement of the device, to enable calibration of the device, but cannot be moved within the housing of the device in said direction of movement. As shown, the roller is tapered, so that for a given translational movement, a different angular movement of the roller is obtained for each position of engagement of the roller with the bar. The rotation of the roller is sensed at both ends of the roller, by lamp and photocell combinations which view markings on transparent glass or plastics discs 52. Also adjustable for focussing light on the marks are the positions of the lens 57 and lamp 58; which are carried in a housing slidably adjustable along pillar 67. The photo-cells 63 are aligned with the marks on the disc during setting up of the device and then fixed by cementing, glueing etc. The scales on the digitizer discs may provide coarse and fine measurements. The processing circuit may include conventional squaring (Schmitt trigger) circuits and digital display or control output.
GB2308673A 1973-05-15 1973-05-15 Expired GB1419413A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2308673A GB1419413A (en) 1973-05-15 1973-05-15

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2308673A GB1419413A (en) 1973-05-15 1973-05-15

Publications (1)

Publication Number Publication Date
GB1419413A true GB1419413A (en) 1975-12-31

Family

ID=10189890

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2308673A Expired GB1419413A (en) 1973-05-15 1973-05-15

Country Status (1)

Country Link
GB (1) GB1419413A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2466748A1 (en) * 1979-09-27 1981-04-10 Olivetti & Co Spa OPTICAL TRANSDUCER FOR DETECTING THE ANGULAR POSITION OF A ROTATING ORGAN IN RELATION TO A FIXED STRUCTURE

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2466748A1 (en) * 1979-09-27 1981-04-10 Olivetti & Co Spa OPTICAL TRANSDUCER FOR DETECTING THE ANGULAR POSITION OF A ROTATING ORGAN IN RELATION TO A FIXED STRUCTURE
GB2128731A (en) * 1979-09-27 1984-05-02 Olivetti & Co Spa Optical transducer arrangement for detecting the angular position of a rotating member with respect to a fixed structure

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Legal Events

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