FR2362364A1 - LENGTH MEASURING DEVICE - Google Patents

LENGTH MEASURING DEVICE

Info

Publication number
FR2362364A1
FR2362364A1 FR7724887A FR7724887A FR2362364A1 FR 2362364 A1 FR2362364 A1 FR 2362364A1 FR 7724887 A FR7724887 A FR 7724887A FR 7724887 A FR7724887 A FR 7724887A FR 2362364 A1 FR2362364 A1 FR 2362364A1
Authority
FR
France
Prior art keywords
scale
segments
carriage
scanning
phototransistors
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.)
Granted
Application number
FR7724887A
Other languages
French (fr)
Other versions
FR2362364B1 (en
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of FR2362364A1 publication Critical patent/FR2362364A1/en
Application granted granted Critical
Publication of FR2362364B1 publication Critical patent/FR2362364B1/fr
Granted 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
    • G01D5/363—Direction discrimination
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness

Landscapes

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

Abstract

In this device, it is possible to adjust by means of a scale consisting of at least two segments (2, 2a) a measurement carriage (6) which has phototransistors (I, II) for the photoelectric scanning of an incremental graduation (3) of the scale, which control display devices for the measured length, control devices for taking account of the adjustment direction of the carriage (6) for the counter sign being provided. In order to simplify the composition of the segments (2, 2a), and to ensure that the gap width (A) between two segments (2, 2a) of the scale does not influence the measurement accuracy, two groups (I, II) of phototransistors for scanning the scale are arranged on the measurement carriage (6) at a distance from one another that is kept larger than the gap width (A), provision being made of a changeover switch which in each case connects only one of these groups (I or II) to the counting mechanism and also the control device for the sign. The changeover switch can be operated by control devices (4, 5, 7, 8) assigned to the joint regions of the scale segments (2, 2a) when each joint region is crossed over by the carriage (6), and alternately switches from the scanning group (I or II) reaching and crossing the joint region to the respective other scanning group (II or I).
FR7724887A 1976-08-19 1977-08-12 LENGTH MEASURING DEVICE Granted FR2362364A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT0617576A AT376298B (en) 1976-08-19 1976-08-19 DEVICE FOR LENGTH MEASUREMENT

Publications (2)

Publication Number Publication Date
FR2362364A1 true FR2362364A1 (en) 1978-03-17
FR2362364B1 FR2362364B1 (en) 1983-09-02

Family

ID=3583637

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7724887A Granted FR2362364A1 (en) 1976-08-19 1977-08-12 LENGTH MEASURING DEVICE

Country Status (3)

Country Link
AT (1) AT376298B (en)
CH (1) CH617006A5 (en)
FR (1) FR2362364A1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2479446A1 (en) * 1980-03-25 1981-10-02 Soro Electro Optics Optical grating system for displacement measurement - has cursor assembly sliding along fixed rule and uses electronic circuit to switch detector heads when grating junction detected
EP0160153A1 (en) * 1983-11-10 1985-11-06 Vcom S.A. Device for obtaining numerical coordinates of a point, or a group of points
EP0209676A2 (en) * 1985-07-23 1987-01-28 Dr. Johannes Heidenhain GmbH Length of way measuring device
FR2750492A1 (en) * 1996-05-24 1998-01-02 Braun Paul W METHOD AND DEVICE FOR POSITIONING MOBILE PARTS OF MACHINES
EP2866337A3 (en) * 2013-08-30 2015-11-11 Yamaha Hatsudoki Kabushiki Kaisha Slider for linear conveyer and linear conveyer

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19628765B4 (en) * 1996-07-17 2007-04-05 Braun, Paul-Wilhelm, Dipl.-Ing. Method and device for determining the position of non-rectilinearly moving, in particular rotating machine parts

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1333049A (en) * 1962-09-04 1963-07-19 Hensoldt & Sohne M Photoelectric measuring equipment
DE1773460A1 (en) * 1968-05-17 1971-09-23 Heidenhain Johannes Dr Arrangement for determining the relative position of two parts

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1333049A (en) * 1962-09-04 1963-07-19 Hensoldt & Sohne M Photoelectric measuring equipment
DE1773460A1 (en) * 1968-05-17 1971-09-23 Heidenhain Johannes Dr Arrangement for determining the relative position of two parts

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2479446A1 (en) * 1980-03-25 1981-10-02 Soro Electro Optics Optical grating system for displacement measurement - has cursor assembly sliding along fixed rule and uses electronic circuit to switch detector heads when grating junction detected
EP0160153A1 (en) * 1983-11-10 1985-11-06 Vcom S.A. Device for obtaining numerical coordinates of a point, or a group of points
EP0209676A2 (en) * 1985-07-23 1987-01-28 Dr. Johannes Heidenhain GmbH Length of way measuring device
EP0209676A3 (en) * 1985-07-23 1988-08-03 Dr. Johannes Heidenhain Gmbh Length of way measuring device
FR2750492A1 (en) * 1996-05-24 1998-01-02 Braun Paul W METHOD AND DEVICE FOR POSITIONING MOBILE PARTS OF MACHINES
EP2866337A3 (en) * 2013-08-30 2015-11-11 Yamaha Hatsudoki Kabushiki Kaisha Slider for linear conveyer and linear conveyer
US9757797B2 (en) 2013-08-30 2017-09-12 Yamaha Hatsudoki Kabushiki Kaisha Slider for linear conveyer and linear conveyer

Also Published As

Publication number Publication date
CH617006A5 (en) 1980-04-30
ATA617576A (en) 1982-02-15
FR2362364B1 (en) 1983-09-02
AT376298B (en) 1984-10-25

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Legal Events

Date Code Title Description
ST Notification of lapse