EP0391883A2 - Détecteur opto-électronique d'obstacle - Google Patents

Détecteur opto-électronique d'obstacle Download PDF

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Publication number
EP0391883A2
EP0391883A2 EP90890073A EP90890073A EP0391883A2 EP 0391883 A2 EP0391883 A2 EP 0391883A2 EP 90890073 A EP90890073 A EP 90890073A EP 90890073 A EP90890073 A EP 90890073A EP 0391883 A2 EP0391883 A2 EP 0391883A2
Authority
EP
European Patent Office
Prior art keywords
optoelectronic
sensor strip
receiving
sensors
obstacle
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
EP90890073A
Other languages
German (de)
English (en)
Other versions
EP0391883B1 (fr
EP0391883A3 (fr
Inventor
Martin Spitzer
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.)
WITRONIC ELEKTRONISCHE GERATE GmbH
Original Assignee
WITRONIC ELEKTRONISCHE GERATE GmbH
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 WITRONIC ELEKTRONISCHE GERATE GmbH filed Critical WITRONIC ELEKTRONISCHE GERATE GmbH
Publication of EP0391883A2 publication Critical patent/EP0391883A2/fr
Publication of EP0391883A3 publication Critical patent/EP0391883A3/fr
Application granted granted Critical
Publication of EP0391883B1 publication Critical patent/EP0391883B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/18—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength
    • G08B13/181—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using active radiation detection systems
    • G08B13/183—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using active radiation detection systems by interruption of a radiation beam or barrier

Definitions

  • the invention relates to an optoelectronic sensor strip for monitoring a specific space for the penetration of foreign bodies, in particular the use between force-moving devices.
  • a contactless sensor strip is increasingly desired, which is in a spatial range of e.g. 20 cm any obstacles are detected and a corresponding output signal is passed on to downstream systems.
  • Sensor strips are currently known which operate in the manner of a light switch. The reflection of the light rays at a corresponding obstacle is measured.
  • the disadvantage of such systems is that the detectability of obstacles depends heavily on the reflective properties of the obstacle.
  • a diffuse light field is generated, which is detected by a spatially separate reception sensor.
  • a signal is only sent to the external device if the bodies penetrating into the monitored space either exceed a certain minimum size or fall below a certain minimum distance from the receiving device. Reflections are irrelevant.
  • Fig. 1 shows the optoelectric sensor bar.
  • the invention consists of a sensor strip with a number of optoelectronic sensors (6) and (7) with corresponding signal amplifiers.
  • the distance between the individual receiving sensors (7) or the individual transmitting sensors (6) from one another can be selected in accordance with the desired uniformity of the field. In experiments, a distance of approx. 80 mm has proven to be well suited.
  • These transmit sensors (6) can be designed as infrared diodes and continuously send out a pulsed infrared light signal.
  • the pulse frequency can be selected as desired within the framework of the data sheet for the diodes.
  • the transmission range of the individual diodes overlaps and a corresponding diffuse infrared light field is created.
  • the infrared light will reach the receiving sensors (7) without weakening.
  • the receiving device (7) is covered by the obstacle at a certain distance between the obstacle (5) and the receiving sensor (7). This distance, at which no more infrared light falls on one of the receiving sensors (7), can be determined by adjusting the transmission power (1), but also by adjusting the gain of the signal received by the receiving device (2).
  • a distance of approx. 20 cm has proven to be useful. As soon as one of the receiving sensors (7) no longer receives a sufficient signal, a signal is passed on to the external control device (8).
  • the external control device (8) can thus carry out a corresponding reversal of the moving receiving device (7).
  • Fig. 2 shows the arrangement of the sensor strip for moving devices, which close from two sides. Both transmit sensors (6) and receive sensors (7) are mounted on both closing edges. An electronic switching device (11) now switches the transceiver (9) in a certain rhythm. This creates a sensor strip effect on both moving closing edges of the transceiver device (9).
  • the receiving device and the transmitting device can be operated by means of their own power supply, but a corresponding electrical connection (wire connection, light guide, wireless data transmission by means of an infrared signal or capacitive or inductive coupling) with central control electronics is also possible.
  • This control electronics also contains the power supply and the corresponding switching elements for controlling downstream devices.
  • the present invention offers a great technical advantage especially in the case of moving devices, such as motorized doors.
  • the receiving device (2) is mounted on the closing edge and the transmitting device (1) is mounted on the opposite impact edge.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Power-Operated Mechanisms For Wings (AREA)
  • Optical Radar Systems And Details Thereof (AREA)
EP19900890073 1989-03-13 1990-03-13 Détecteur opto-électronique d'obstacle Expired - Lifetime EP0391883B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT564/89 1989-03-13
AT56489A AT396188B (de) 1989-03-13 1989-03-13 Verfahren zum ueberwachen des raumes zwischen kraftbewegten einrichtungen

Publications (3)

Publication Number Publication Date
EP0391883A2 true EP0391883A2 (fr) 1990-10-10
EP0391883A3 EP0391883A3 (fr) 1991-08-07
EP0391883B1 EP0391883B1 (fr) 1995-06-21

Family

ID=3493956

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900890073 Expired - Lifetime EP0391883B1 (fr) 1989-03-13 1990-03-13 Détecteur opto-électronique d'obstacle

Country Status (3)

Country Link
EP (1) EP0391883B1 (fr)
AT (1) AT396188B (fr)
DE (1) DE59009266D1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5486691A (en) * 1992-10-07 1996-01-23 Erwin Sick Gmbh Optik-Eletronik Monitoring apparatus in machines
FR2754089A1 (fr) * 1996-09-27 1998-04-03 Barbuti Ottorino Barriere de securite a rayons infrarouges
WO2005088349A1 (fr) * 2004-03-09 2005-09-22 Gerd Reime Dispositif de controle d'acces
EP2083286A1 (fr) * 2008-01-25 2009-07-29 Marantec Antriebs- Und Steuerungstechnik Gmbh & Co., Produktions Kg Barrière lumineuse
CN111610783A (zh) * 2020-04-29 2020-09-01 尚科宁家(中国)科技有限公司 自主机器人的行进控制方法、自主机器人及存储介质

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3746863A (en) * 1972-03-15 1973-07-17 Exotron Ind Ltd Light curtain control for a switch
AU509436B2 (en) * 1976-05-05 1980-05-15 3M Australia Pty Limited Optoelectronic detection apparatus
US4260882A (en) * 1978-05-17 1981-04-07 Barnes Austen B Light sensitive detection circuit
AU550049B2 (en) * 1981-02-10 1986-02-27 Otis Elevator Company Detection means
US4652205A (en) * 1985-05-02 1987-03-24 Robotic Vision Systems, Inc. Robot cell safety system
WO1987004259A1 (fr) * 1986-01-13 1987-07-16 Data Instruments Inc. Systeme de detection d'intrusions dans des machines industrielles en fonctionnement

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3105569C2 (de) * 1981-02-16 1983-10-20 Walter 8011 Kirchheim Neubert Objektsicherungsstrecke

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3746863A (en) * 1972-03-15 1973-07-17 Exotron Ind Ltd Light curtain control for a switch
AU509436B2 (en) * 1976-05-05 1980-05-15 3M Australia Pty Limited Optoelectronic detection apparatus
US4260882A (en) * 1978-05-17 1981-04-07 Barnes Austen B Light sensitive detection circuit
AU550049B2 (en) * 1981-02-10 1986-02-27 Otis Elevator Company Detection means
US4652205A (en) * 1985-05-02 1987-03-24 Robotic Vision Systems, Inc. Robot cell safety system
WO1987004259A1 (fr) * 1986-01-13 1987-07-16 Data Instruments Inc. Systeme de detection d'intrusions dans des machines industrielles en fonctionnement

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5486691A (en) * 1992-10-07 1996-01-23 Erwin Sick Gmbh Optik-Eletronik Monitoring apparatus in machines
FR2754089A1 (fr) * 1996-09-27 1998-04-03 Barbuti Ottorino Barriere de securite a rayons infrarouges
WO2005088349A1 (fr) * 2004-03-09 2005-09-22 Gerd Reime Dispositif de controle d'acces
US7531787B2 (en) 2004-03-09 2009-05-12 Gerd Reime Access control device
EP2083286A1 (fr) * 2008-01-25 2009-07-29 Marantec Antriebs- Und Steuerungstechnik Gmbh & Co., Produktions Kg Barrière lumineuse
US7973273B2 (en) 2008-01-25 2011-07-05 Marantec Antriebs—und Steuerungstechnik GmbH & Co. KG Light barrier with feedback control
CN101493530B (zh) * 2008-01-25 2014-08-20 玛琅泰克驱动及控制技术股份有限及两合公司 光栅栏
CN111610783A (zh) * 2020-04-29 2020-09-01 尚科宁家(中国)科技有限公司 自主机器人的行进控制方法、自主机器人及存储介质

Also Published As

Publication number Publication date
EP0391883B1 (fr) 1995-06-21
DE59009266D1 (de) 1995-07-27
ATA56489A (de) 1992-10-15
EP0391883A3 (fr) 1991-08-07
AT396188B (de) 1993-06-25

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