FR2340574A2 - Optoelectronic dimensional control system - uses two pairs of photoreceivers detecting positive and negative tolerance respectively - Google Patents

Optoelectronic dimensional control system - uses two pairs of photoreceivers detecting positive and negative tolerance respectively

Info

Publication number
FR2340574A2
FR2340574A2 FR7622680A FR7622680A FR2340574A2 FR 2340574 A2 FR2340574 A2 FR 2340574A2 FR 7622680 A FR7622680 A FR 7622680A FR 7622680 A FR7622680 A FR 7622680A FR 2340574 A2 FR2340574 A2 FR 2340574A2
Authority
FR
France
Prior art keywords
photoreceivers
pair
pairs
illumination
control system
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
FR7622680A
Other languages
French (fr)
Other versions
FR2340574B2 (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
Priority claimed from CH156376A external-priority patent/CH612501A5/en
Application filed by Individual filed Critical Individual
Publication of FR2340574A2 publication Critical patent/FR2340574A2/en
Application granted granted Critical
Publication of FR2340574B2 publication Critical patent/FR2340574B2/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

Landscapes

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

Abstract

The ophelectronic dimensional control system uses live pairs of photoreceivers (2, 22, 23, 24). Each of these pairs is mounted between two electrical supply conductors with an electrode common lothers two receivers. The signal on the common electrode measures the difference in illumination of the two photoreceivers of the pair. This difference signal controls the setting of a two state electronic circuit for this pair of photoreceivers. The light beam is partially marked near to the middle position of the mobile element to be controlled. This middle position corresponds to equal illumination of each pair of photoelectric receivers. The masking is such that the detection of non-equal illumination of a pair of receivers corresponds to positive overshoot of predetermined dimensional tolerance. The detection of inbalance of illumination of the other pair of photoreceivers corresponds to a negative overshoot of tolerance.
FR7622680A 1976-02-04 1976-07-26 Optoelectronic dimensional control system - uses two pairs of photoreceivers detecting positive and negative tolerance respectively Granted FR2340574A2 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH156376A CH612501A5 (en) 1975-02-07 1976-02-04 Optoelectronic device for measuring a dimensional variation or the displacement of an object

Publications (2)

Publication Number Publication Date
FR2340574A2 true FR2340574A2 (en) 1977-09-02
FR2340574B2 FR2340574B2 (en) 1979-09-28

Family

ID=4213346

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7622680A Granted FR2340574A2 (en) 1976-02-04 1976-07-26 Optoelectronic dimensional control system - uses two pairs of photoreceivers detecting positive and negative tolerance respectively

Country Status (1)

Country Link
FR (1) FR2340574A2 (en)

Also Published As

Publication number Publication date
FR2340574B2 (en) 1979-09-28

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