JPS57204482A - Reflection type photoelectric switch - Google Patents

Reflection type photoelectric switch

Info

Publication number
JPS57204482A
JPS57204482A JP56090482A JP9048281A JPS57204482A JP S57204482 A JPS57204482 A JP S57204482A JP 56090482 A JP56090482 A JP 56090482A JP 9048281 A JP9048281 A JP 9048281A JP S57204482 A JPS57204482 A JP S57204482A
Authority
JP
Japan
Prior art keywords
detected
peak value
light beam
photodetector group
reflected
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
JP56090482A
Other languages
Japanese (ja)
Inventor
Masakatsu Kurita
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.)
Omron Corp
Original Assignee
Tateisi Electronics Co
Omron Tateisi Electronics Co
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 Tateisi Electronics Co, Omron Tateisi Electronics Co filed Critical Tateisi Electronics Co
Priority to JP56090482A priority Critical patent/JPS57204482A/en
Publication of JPS57204482A publication Critical patent/JPS57204482A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
    • G01S17/02—Systems using the reflection of electromagnetic waves other than radio waves
    • G01S17/04—Systems determining the presence of a target

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Switches Operated By Changes In Physical Conditions (AREA)
  • Optical Radar Systems And Details Thereof (AREA)

Abstract

PURPOSE:To cover a wide range, by photodetecting a light beam which has been projected from one projecting element and has been reflected by an object to be detected, by photodetector group, and comparing a peak value of each output with a threshold value decided in advance. CONSTITUTION:A light beam 2 emitted from a projecting element 1 is converted to a parallel light beam 4 by an optical system 3 and is irradiated to an object to be detected 5. It is irregularly reflected by the surface of the object to be detected 5, its reflected ray is focused by an optical system 9, and is led to a photodetector group 10. An output of the photodetector group 10 is sent to a peak value detecting circuit 11, a peak value is detected, its peak value is compared with a threshold value decided in advance by a discriminating circuit 12, and a signal showing ''exist'' of a detected object is outputted.
JP56090482A 1981-06-12 1981-06-12 Reflection type photoelectric switch Pending JPS57204482A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56090482A JPS57204482A (en) 1981-06-12 1981-06-12 Reflection type photoelectric switch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56090482A JPS57204482A (en) 1981-06-12 1981-06-12 Reflection type photoelectric switch

Publications (1)

Publication Number Publication Date
JPS57204482A true JPS57204482A (en) 1982-12-15

Family

ID=13999775

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56090482A Pending JPS57204482A (en) 1981-06-12 1981-06-12 Reflection type photoelectric switch

Country Status (1)

Country Link
JP (1) JPS57204482A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5434856A (en) * 1977-08-24 1979-03-14 Koito Kogyo Kk Device for detecting objects

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5434856A (en) * 1977-08-24 1979-03-14 Koito Kogyo Kk Device for detecting objects

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