JPS59183675U - Light receiving element level down detection device - Google Patents

Light receiving element level down detection device

Info

Publication number
JPS59183675U
JPS59183675U JP7933983U JP7933983U JPS59183675U JP S59183675 U JPS59183675 U JP S59183675U JP 7933983 U JP7933983 U JP 7933983U JP 7933983 U JP7933983 U JP 7933983U JP S59183675 U JPS59183675 U JP S59183675U
Authority
JP
Japan
Prior art keywords
receiving element
light receiving
detection
level
detection device
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
JP7933983U
Other languages
Japanese (ja)
Inventor
福山　俊文
Original Assignee
オムロン株式会社
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 オムロン株式会社 filed Critical オムロン株式会社
Priority to JP7933983U priority Critical patent/JPS59183675U/en
Publication of JPS59183675U publication Critical patent/JPS59183675U/en
Pending legal-status Critical Current

Links

Landscapes

  • Optical Radar Systems And Details Thereof (AREA)
  • Electronic Switches (AREA)

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【図面の簡単な説明】[Brief explanation of drawings]

第１図は、この考案の実施例を示す電気回路図、第２図
は第１図の回路の動作を示すタイム・チャートである。 １・・・投光素子、２・・・受光素子、５・・・物体検
出用比較回路、８・・・レベル・ダウン検出用比較回路
、９・・・レベル・ダウン検出回路。FIG. 1 is an electric circuit diagram showing an embodiment of this invention, and FIG. 2 is a time chart showing the operation of the circuit shown in FIG. DESCRIPTION OF SYMBOLS 1... Light emitting element, 2... Light receiving element, 5... Comparison circuit for object detection, 8... Comparison circuit for level down detection, 9... Level down detection circuit.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 受光素子および受光素子の出力信号を所要の物体検出用
基準レベルで弁別して第１の検知信号を出力する物体検
出用比較回路を備えた受光回路において、受光素子の出
力信号を所要のレベル・ダウン検出用基準レベルで弁別
［、て第２の検知信号を出力するレベル・ダウン検出用
比較回路と１、物体検出用比較回路から検知信号が出力
されている間にレベル・り゛ラン検出用比較回路から検
知信号が出力されないときに受光素子のレベル・ダウン
を検出するレベル・ダウン検出回路とを備えている受光
素子のレベル・ダウン検出装置。In a light receiving circuit equipped with a light receiving element and an object detection comparison circuit that discriminates the output signal of the light receiving element at a required reference level for object detection and outputs a first detection signal, the output signal of the light receiving element is lowered to the required level. A comparison circuit for level down detection outputs a second detection signal by discrimination based on the detection reference level. A level-down detection device for a light-receiving element, comprising a level-down detection circuit that detects a level-down of the light-receiving element when no detection signal is output from the circuit.
JP7933983U 1983-05-25 1983-05-25 Light receiving element level down detection device Pending JPS59183675U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7933983U JPS59183675U (en) 1983-05-25 1983-05-25 Light receiving element level down detection device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7933983U JPS59183675U (en) 1983-05-25 1983-05-25 Light receiving element level down detection device

Publications (1)

Publication Number Publication Date
JPS59183675U true JPS59183675U (en) 1984-12-06

Family

ID=30209344

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7933983U Pending JPS59183675U (en) 1983-05-25 1983-05-25 Light receiving element level down detection device

Country Status (1)

Country Link
JP (1) JPS59183675U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09238062A (en) * 1997-02-07 1997-09-09 Omron Corp Photoelectric detector

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09238062A (en) * 1997-02-07 1997-09-09 Omron Corp Photoelectric detector

Similar Documents

Publication Publication Date Title
JPS59183675U (en) Light receiving element level down detection device
JPS60184188U (en) visitor alarm
JPS5954871U (en) detection device
JPS5842669U (en) electronic device with a motor
JPS58530U (en) AM receiver muting device
JPS5968251U (en) gas detector
JPS60119158U (en) Input signal disconnection detection device
JPS58189980U (en) Infrared moving object detection device
JPS59170271U (en) current detection device
JPS59191683U (en) alarm device
JPS60166234U (en) Power outage detection device
JPS59144584U (en) paper detection device
JPS6146651U (en) Mark detection device
JPS5948163U (en) automatic telephone answering device
JPS59168460U (en) Multilevel parking device operation panel
JPS6035280U (en) position detection device
JPS6118674U (en) fax machine
JPS5962556U (en) Input level digitization device
JPS6035364U (en) Record size detection device
JPS59187730U (en) Detection device using photo sensor
JPS60169587U (en) sensor circuit
JPS60183955U (en) Player switch device
JPS58123845U (en) Digital original detection circuit
JPS5857909U (en) object detection device
JPS6142146U (en) Traffic information station display circuit