EP0902402A3 - Verfahren zur optischen Überwachung eines Raumbereichs - Google Patents

Verfahren zur optischen Überwachung eines Raumbereichs Download PDF

Info

Publication number
EP0902402A3
EP0902402A3 EP98117081A EP98117081A EP0902402A3 EP 0902402 A3 EP0902402 A3 EP 0902402A3 EP 98117081 A EP98117081 A EP 98117081A EP 98117081 A EP98117081 A EP 98117081A EP 0902402 A3 EP0902402 A3 EP 0902402A3
Authority
EP
European Patent Office
Prior art keywords
space
cameras
optically monitoring
image
vision
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
EP98117081A
Other languages
English (en)
French (fr)
Other versions
EP0902402A2 (de
EP0902402B1 (de
Inventor
Karl-Heinz Kleine
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.)
Rms Kleine Vertrieb Elektonischer Geraete GmbH
Sick AG
Original Assignee
Rms Kleine Vertrieb Elektonischer Geraete GmbH
Rms Kleine Vertrieb Elekt GmbH
Rms Kleine Vertrieb Elektonischer 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 Rms Kleine Vertrieb Elektonischer Geraete GmbH, Rms Kleine Vertrieb Elekt GmbH, Rms Kleine Vertrieb Elektonischer Gerate GmbH filed Critical Rms Kleine Vertrieb Elektonischer Geraete GmbH
Publication of EP0902402A2 publication Critical patent/EP0902402A2/de
Publication of EP0902402A3 publication Critical patent/EP0902402A3/de
Application granted granted Critical
Publication of EP0902402B1 publication Critical patent/EP0902402B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • G08B13/189—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems
    • G08B13/194—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems using image scanning and comparing systems
    • G08B13/196—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems using image scanning and comparing systems using television cameras
    • G08B13/19602—Image analysis to detect motion of the intruder, e.g. by frame subtraction
    • 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
    • G08B13/189—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems
    • G08B13/194—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems using image scanning and comparing systems
    • G08B13/196—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems using image scanning and comparing systems using television cameras
    • G08B13/19602—Image analysis to detect motion of the intruder, e.g. by frame subtraction
    • G08B13/19604—Image analysis to detect motion of the intruder, e.g. by frame subtraction involving reference image or background adaptation with time to compensate for changing conditions, e.g. reference image update on detection of light level change
    • 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
    • G08B13/189—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems
    • G08B13/194—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems using image scanning and comparing systems
    • G08B13/196—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems using image scanning and comparing systems using television cameras
    • G08B13/19639—Details of the system layout
    • G08B13/19641—Multiple cameras having overlapping views on a single scene

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Closed-Circuit Television Systems (AREA)
  • Holo Graphy (AREA)
  • Burglar Alarm Systems (AREA)
  • Indicating And Signalling Devices For Elevators (AREA)

Abstract

Dargestellt und beschrieben ist ein optisches Überwachungssystem zur Erfassung eines Raumbereichs, insbesondere des Türbereichs (1) eines Aufzuges, mit mindestens einer digitalen Kamera (2) und einer Auswerteeinheit (3), wobei die digitale Kamera (2) ein Kameramodul (5) und einen A/D-Wandler (6) und die Auswerteeinheit (3) einen Mikroprozessor (7) und einen Bildspeicher (8) aufweisen und die Auswerteeinheit (3) die Grauwerte eines aktuellen Bildes mit den Grauwerten eines Referenzbildes pixelweise vergleicht und die Differenz zwischen den Grauwerten des aktuellen Bildes und den Grauwerten des Referenzbildes auswertet.
Erfindungsgemäß ist das Überwachungssystem dadurch besonders sicher, daß der Mikroprozessor (7) die Funktionstüchtigkeit der digitalen Kamera (3) überwacht, insbesondere das Unter- und/oder Überschreiten einer Grundhelligkeit des aktuellen Bildes feststellt.
EP98117081A 1997-09-15 1998-09-09 Verfahren und Vorrichtung zur optischen Überwachung eines Raumbereichs Expired - Lifetime EP0902402B1 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19740599 1997-09-15
DE19740599 1997-09-15
DE19743874 1997-10-04
DE19743874 1997-10-04

Publications (3)

Publication Number Publication Date
EP0902402A2 EP0902402A2 (de) 1999-03-17
EP0902402A3 true EP0902402A3 (de) 2000-05-17
EP0902402B1 EP0902402B1 (de) 2002-07-24

Family

ID=26040008

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98117081A Expired - Lifetime EP0902402B1 (de) 1997-09-15 1998-09-09 Verfahren und Vorrichtung zur optischen Überwachung eines Raumbereichs

Country Status (3)

Country Link
EP (1) EP0902402B1 (de)
AT (1) ATE221232T1 (de)
DE (1) DE59804862D1 (de)

Families Citing this family (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29911390U1 (de) * 1999-06-30 1999-08-12 Sick AG, 79183 Waldkirch Optoelektronisches Überwachungssystem
DE29911391U1 (de) * 1999-06-30 1999-10-14 Sick AG, 79183 Waldkirch Optoelektronisches Überwachungssystem
DE10017344C1 (de) * 2000-04-07 2001-11-29 Pilz Gmbh & Co Verfahren und Vorrichtung zum Überprüfen der Funktionssicherheit einer Bildaufnahmeeinheit
AU2001252223A1 (en) 2000-04-07 2001-10-23 Pilz Gmbh And Co. Protective device for safeguarding a dangerous area and method for verifying thefunctional reliability of such device
DE10017333C2 (de) * 2000-04-07 2003-02-13 Pilz Gmbh & Co Schutzvorrichtung zum Absichern eines Gefahrenbereichs sowie Verfahren zum Überprüfen der Funktionssicherheit einer solchen
DE10033608A1 (de) * 2000-07-11 2002-02-07 Pilz Gmbh & Co Verfahren und Vorrichtung zum Absichern eines Gefahrenbereichs, insbesondere des Gefahrenbereichs einer automatisiert arbeitenden Maschine
DE10047896A1 (de) * 2000-09-26 2002-04-11 Saftey Control Verfahren zum Überprüfen der Funktionstüchtigkeit einer Sensoreinrichtung
FR2829755B1 (fr) * 2001-09-18 2004-01-23 Autinor Procede de surveillance d'une cabine d'ascenseur
US7154531B2 (en) * 2001-10-26 2006-12-26 The Chamberlain Group, Inc. Detecting objects by digital imaging device
DE10205691A1 (de) 2002-02-04 2003-08-14 Pilz Gmbh & Co Verfahren zum Überprüfen der Funktonssicherheit eines Bildsensors sowie Vorrichtung mit einem Bildsensor
DE10224031B3 (de) * 2002-05-31 2004-01-29 Leuze Lumiflex Gmbh + Co. Kg Vorrichtung zur Überwachung eines Erfassungsbereiches an einem Arbeitsmittel
DE10251584B4 (de) 2002-11-06 2004-11-04 Leuze Lumiflex Gmbh + Co. Kg Verfahren und Vorrichtung zur Überwachung eines Erfassungsbereiches
AT500925A1 (de) * 2003-03-05 2006-04-15 Walter Dipl Ing Lorenz Verfahren und einrichtung zur überwachung des einstiegsbereiches von fahrzeugen
DE10353981A1 (de) * 2003-11-19 2005-06-09 Sick Ag Kamerasystem
DE102004020998A1 (de) 2004-04-19 2005-11-03 Pilz Gmbh & Co. Kg Vorrichtung zum Überwachen eines Raumbereichs, insbesondere zum Absichern eines Gefahrenbereichs einer automatisiert arbeitenden Anlage
DE102004035243B4 (de) * 2004-07-21 2007-09-20 Sick Ag Kameraanordnung
EP1647357A1 (de) * 2004-10-13 2006-04-19 Robosoft N.V. Verfahren und Vorrichtung zur Überwachung und Sicherung eines Gefahrbereichs einer Maschine
ES2358133T3 (es) 2006-04-24 2011-05-05 Inventio Ag Dispositivo de vigilancia y procedimiento para vigilar un sistema de ascensor.
DE202006008112U1 (de) * 2006-05-20 2006-08-10 Sick Ag Optoelektronische Schutzeinrichtung
DE102006052805B3 (de) * 2006-11-09 2008-06-05 Sick Ag Optoelektronische Überwachungsvorrichtung mit Testeinheit und Testverfahren
ATE456783T1 (de) 2007-07-20 2010-02-15 Sick Ag 3d-sicherheits-sensor und verfahren zum testen eines 3d-sicherheits-sensors
EP2199999B1 (de) 2008-12-19 2012-05-02 Pepperl + Fuchs GmbH Verfahren zum Testen eines optischen Sensors und testbarer optischer Sensor
DE102009010460B4 (de) 2009-02-13 2010-11-25 Pilz Gmbh & Co. Kg Vorrichtung und Verfahren zum Bestimmen der Nachlaufzeit einer Maschine
US9083946B2 (en) * 2012-02-21 2015-07-14 Rockwell Automation Technologies, Inc. System to detect failed pixels in a sensor array
DE102013106514B3 (de) 2013-06-21 2014-10-30 Pilz Gmbh & Co. Kg Vorrichtung und Verfahren zum Absichern einer automatisiert arbeitenden Maschine
US9525865B2 (en) * 2014-10-23 2016-12-20 Texas Instruments Incorporated Fault detection and method of detecting faults in digital imaging systems
DE102019123581A1 (de) * 2019-09-03 2021-03-04 Pilz Gmbh & Co. Kg Vorrichtung und Verfahren zur Ausführung einer Sicherheitsfunktion
DE102020101794A1 (de) 2020-01-27 2021-07-29 Sick Ag Absichern einer Maschine
EP3995852A1 (de) 2020-11-06 2022-05-11 Sick Ag Abstandsmessung eines objekts

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991007850A1 (en) * 1989-11-09 1991-05-30 Zone Technology Pty Limited Digital video camera
US5298697A (en) * 1991-09-19 1994-03-29 Hitachi, Ltd. Apparatus and methods for detecting number of people waiting in an elevator hall using plural image processing means with overlapping fields of view
US5387768A (en) * 1993-09-27 1995-02-07 Otis Elevator Company Elevator passenger detector and door control system which masks portions of a hall image to determine motion and court passengers
DE19525875A1 (de) * 1995-07-15 1997-01-16 Dorma Gmbh & Co Kg Vorrichtung und Verfahren zur Feststellung von Personenzahl und Gegenständen innerhalb eines zu überwachenden Raumes

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991007850A1 (en) * 1989-11-09 1991-05-30 Zone Technology Pty Limited Digital video camera
US5298697A (en) * 1991-09-19 1994-03-29 Hitachi, Ltd. Apparatus and methods for detecting number of people waiting in an elevator hall using plural image processing means with overlapping fields of view
US5387768A (en) * 1993-09-27 1995-02-07 Otis Elevator Company Elevator passenger detector and door control system which masks portions of a hall image to determine motion and court passengers
DE19525875A1 (de) * 1995-07-15 1997-01-16 Dorma Gmbh & Co Kg Vorrichtung und Verfahren zur Feststellung von Personenzahl und Gegenständen innerhalb eines zu überwachenden Raumes

Also Published As

Publication number Publication date
DE59804862D1 (de) 2002-08-29
ATE221232T1 (de) 2002-08-15
EP0902402A2 (de) 1999-03-17
EP0902402B1 (de) 2002-07-24

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