JPH0419830U - - Google Patents

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Publication number
JPH0419830U
JPH0419830U JP5805590U JP5805590U JPH0419830U JP H0419830 U JPH0419830 U JP H0419830U JP 5805590 U JP5805590 U JP 5805590U JP 5805590 U JP5805590 U JP 5805590U JP H0419830 U JPH0419830 U JP H0419830U
Authority
JP
Japan
Prior art keywords
light
light emitting
light receiving
synchronization
optical axis
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
JP5805590U
Other languages
Japanese (ja)
Other versions
JP2519310Y2 (en
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 filed Critical
Priority to JP1990058055U priority Critical patent/JP2519310Y2/en
Publication of JPH0419830U publication Critical patent/JPH0419830U/ja
Application granted granted Critical
Publication of JP2519310Y2 publication Critical patent/JP2519310Y2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Description

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

図面は本考案の一実施例を示し、第１図は全体
のブロツク図、第２図は投光回路の各部の電圧波
形図、第３図は受光回路の各部の電圧波形図、第
４図はフローチヤートである。 図面中、１１は投光回路、１２は同期用投光素
子、１３〜１５は検出用投光素子、２１は受光回
路、２２は同期用受光素子、２３〜２５は同期用
受光素子、３２はＣＰＵ（同期信号生成手段、判
定手段）である。 The drawings show one embodiment of the present invention, and FIG. 1 is an overall block diagram, FIG. 2 is a voltage waveform diagram of each part of the light emitting circuit, FIG. 3 is a voltage waveform diagram of each part of the light receiving circuit, and FIG. 4 is a diagram of the voltage waveform of each part of the light receiving circuit. is a flowchart. In the drawing, 11 is a light projecting circuit, 12 is a synchronizing light projecting element, 13 to 15 are detection light projecting elements, 21 is a light receiving circuit, 22 is a synchronizing light receiving element, 23 to 25 is a synchronizing light receiving element, and 32 is a synchronizing light receiving element. It is a CPU (synchronization signal generation means, determination means).

Claims (1)

【実用新案登録請求の範囲】 検出用の光軸を構成するように対をなして設け
られた検出用投光素子及び受光素子と、 同期用の光軸を構成するように対をなして設け
られた同期用投光素子及び受光素子と、 前記同期用投光素子の発光時間を前記検出用投
光素子の発光時間よりも長くして各投光素子を所
定の投光タイミングで繰返し走査するように発光
させる投光回路と、 前記同期用受光素子が所定時間継続して受光状
態となつたことを検出する度に前記投光タイミン
グに対応した同期信号を出力する同期信号生成手
段と、 前記各検出用受光素子からの受光信号を前記同
期信号と同期をとりつつ取込むことにより前記光
軸の遮光状態を検出する判定手段とを具備し、 前記判定手段は、前記各光軸の状態を少なくと
も前回の走査時について記憶し遮光状態が複数回
数の走査にわたつて繰返されたことを条件に判定
を行うように構成され、 前記同期信号生成手段は、前記同期用受光素子
が所定時間継続した受光状態とならなかつたとき
にはその前に入力された同期用受光素子からの受
光信号に基づくタイミングで同期信号を出力する
構成とされていることを特徴とする多光軸式光電
スイツチ。[Scope of Claim for Utility Model Registration] A detection light emitting element and a light receiving element arranged in pairs to form an optical axis for detection, and a pair arranged to form an optical axis for synchronization. the synchronizing light emitting element and the light receiving element, and each light emitting element is repeatedly scanned at a predetermined light emitting timing by making the light emitting time of the synchronizing light emitting element longer than the light emitting time of the detection light emitting element. a light projecting circuit that emits light in such a manner; a synchronization signal generating means that outputs a synchronization signal corresponding to the light projection timing each time it is detected that the synchronization light receiving element has been in a light receiving state for a predetermined period of time; determination means for detecting a light-blocking state of the optical axis by capturing a light reception signal from each detection light-receiving element in synchronization with the synchronization signal, and the determination means detects the state of each optical axis. The synchronization signal generating means is configured to memorize at least the previous scan and to make a determination on the condition that the light-blocking state has been repeated over a plurality of scans, and the synchronization signal generating means is configured to perform a determination on the condition that the synchronization light receiving element continues for a predetermined period of time. A multi-optical axis photoelectric switch is characterized in that, when the light receiving state is not reached, a synchronizing signal is output at a timing based on a light receiving signal from a synchronizing light receiving element that was previously input.
JP1990058055U 1990-05-31 1990-05-31 Multi-axis photoelectric switch Expired - Lifetime JP2519310Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1990058055U JP2519310Y2 (en) 1990-05-31 1990-05-31 Multi-axis photoelectric switch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1990058055U JP2519310Y2 (en) 1990-05-31 1990-05-31 Multi-axis photoelectric switch

Publications (2)

Publication Number Publication Date
JPH0419830U true JPH0419830U (en) 1992-02-19
JP2519310Y2 JP2519310Y2 (en) 1996-12-04

Family

ID=31583319

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1990058055U Expired - Lifetime JP2519310Y2 (en) 1990-05-31 1990-05-31 Multi-axis photoelectric switch

Country Status (1)

Country Link
JP (1) JP2519310Y2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06132802A (en) * 1992-10-21 1994-05-13 Sunx Ltd Multiple optical axis photoelectric switch
JPH06132803A (en) * 1992-10-21 1994-05-13 Sunx Ltd Multiple optical axis photoelectric switch
JP2008089366A (en) * 2006-09-29 2008-04-17 Fujifilm Corp Dispensing device
JP2012199823A (en) * 2011-03-22 2012-10-18 Panasonic Industrial Devices Sunx Co Ltd Multiple optical axis photoelectric sensor

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5282066A (en) * 1975-12-27 1977-07-08 Omron Tateisi Electronics Co Circuit for photoelectric switch
JPS5322973A (en) * 1975-10-15 1978-03-02 Mitsubishi Electric Corp Controlling device fo r vehicle
JPS6084012A (en) * 1983-10-14 1985-05-13 Omron Tateisi Electronics Co Contactless switch
JPS6356015A (en) * 1986-08-26 1988-03-10 Sankusu Kk Multi optical axis type photoelectric switch

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5322973A (en) * 1975-10-15 1978-03-02 Mitsubishi Electric Corp Controlling device fo r vehicle
JPS5282066A (en) * 1975-12-27 1977-07-08 Omron Tateisi Electronics Co Circuit for photoelectric switch
JPS6084012A (en) * 1983-10-14 1985-05-13 Omron Tateisi Electronics Co Contactless switch
JPS6356015A (en) * 1986-08-26 1988-03-10 Sankusu Kk Multi optical axis type photoelectric switch

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06132802A (en) * 1992-10-21 1994-05-13 Sunx Ltd Multiple optical axis photoelectric switch
JPH06132803A (en) * 1992-10-21 1994-05-13 Sunx Ltd Multiple optical axis photoelectric switch
JP2008089366A (en) * 2006-09-29 2008-04-17 Fujifilm Corp Dispensing device
JP2012199823A (en) * 2011-03-22 2012-10-18 Panasonic Industrial Devices Sunx Co Ltd Multiple optical axis photoelectric sensor

Also Published As

Publication number Publication date
JP2519310Y2 (en) 1996-12-04

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