JPS5552974A - Detector circuit - Google Patents

Detector circuit

Info

Publication number
JPS5552974A
JPS5552974A JP12668378A JP12668378A JPS5552974A JP S5552974 A JPS5552974 A JP S5552974A JP 12668378 A JP12668378 A JP 12668378A JP 12668378 A JP12668378 A JP 12668378A JP S5552974 A JPS5552974 A JP S5552974A
Authority
JP
Japan
Prior art keywords
signal
light
article
photodetector
discriminated
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.)
Pending
Application number
JP12668378A
Other languages
Japanese (ja)
Inventor
Tsutomu Sakuma
Toshiyuki Nishimura
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP12668378A priority Critical patent/JPS5552974A/en
Publication of JPS5552974A publication Critical patent/JPS5552974A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V8/00—Prospecting or detecting by optical means
    • G01V8/10—Detecting, e.g. by using light barriers
    • G01V8/12—Detecting, e.g. by using light barriers using one transmitter and one receiver

Landscapes

  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Geophysics (AREA)
  • Geophysics And Detection Of Objects (AREA)

Abstract

PURPOSE:To carry out exact detection devoid of influence of disturbance of outside light by synchronously discriminating and retaining a signal discriminated by a received light signal from a photodetector as a quantitative signal and a light emitting signal and using the output of a synchronous discriminator as a detected output. CONSTITUTION:An optical signal from a light emitting element 3 is received by a photodetector 5 for producing a binary signal of the position or property or the like of an article for reflecting the optical signal or an article 4 located on the route of the optical signal to thereby detect the article. The element 3 emits a light under the control of a light emitting element controller 2 on the basis of the signal from a light emission signal generator 1. The photodetector 5 receives the light of different amount depending upon the position, property or the like of the article 4. The signal is then discriminated by a discriminator 7 to become a binary signal, and synchronized, discriminated and retained with the signal from the generator 1. The signal thus retained becomes the output 9 of this detector circuit.
JP12668378A 1978-10-13 1978-10-13 Detector circuit Pending JPS5552974A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12668378A JPS5552974A (en) 1978-10-13 1978-10-13 Detector circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12668378A JPS5552974A (en) 1978-10-13 1978-10-13 Detector circuit

Publications (1)

Publication Number Publication Date
JPS5552974A true JPS5552974A (en) 1980-04-17

Family

ID=14941265

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12668378A Pending JPS5552974A (en) 1978-10-13 1978-10-13 Detector circuit

Country Status (1)

Country Link
JP (1) JPS5552974A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4629877A (en) * 1983-04-04 1986-12-16 Canon Kabushiki Kaisha Photo-electric conversion device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4629877A (en) * 1983-04-04 1986-12-16 Canon Kabushiki Kaisha Photo-electric conversion device

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