WO2009115202A3 - Optical sensor and method for detecting objects - Google Patents

Optical sensor and method for detecting objects Download PDF

Info

Publication number
WO2009115202A3
WO2009115202A3 PCT/EP2009/001643 EP2009001643W WO2009115202A3 WO 2009115202 A3 WO2009115202 A3 WO 2009115202A3 EP 2009001643 W EP2009001643 W EP 2009001643W WO 2009115202 A3 WO2009115202 A3 WO 2009115202A3
Authority
WO
WIPO (PCT)
Prior art keywords
light
light sources
detecting
optical sensor
scattered
Prior art date
Application number
PCT/EP2009/001643
Other languages
German (de)
French (fr)
Other versions
WO2009115202A2 (en
Inventor
Marcus Thien
Kin Hing Chin
Yau Tine Chong
Weng Cheong Chow
Original Assignee
Pepperl + Fuchs 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 Pepperl + Fuchs Gmbh filed Critical Pepperl + Fuchs Gmbh
Priority to KR1020107023309A priority Critical patent/KR101275075B1/en
Priority to CN2009801099717A priority patent/CN101978291A/en
Priority to EP09722314.3A priority patent/EP2257840B1/en
Publication of WO2009115202A2 publication Critical patent/WO2009115202A2/en
Publication of WO2009115202A3 publication Critical patent/WO2009115202A3/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V8/00—Prospecting or detecting by optical means
    • G01V8/10—Detecting, e.g. by using light barriers
    • G01V8/20—Detecting, e.g. by using light barriers using multiple transmitters or receivers

Landscapes

  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Geophysics (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Length Measuring Devices By Optical Means (AREA)

Abstract

The invention relates to an optical sensor (50) for detecting an object (2) in a monitoring region (3), comprising a light emitting unit for illuminating the monitoring region with light, comprising a detector unit having a close-up element for detecting light reflected and/or scattered from an object in a close-up region, and a far element for detecting light reflected and/or scattered from a background surface, and comprising a control and evaluation unit for controlling the light emitting unit and for evaluating detection signals of the detector unit. The optical sensor is characterized in that the light emitting unit comprises a plurality of light sources (14, 15, 16) in order to exclude faulty diagnoses, that the light sources are positioned and aligned in order to create light spots (17, 18, 19) on the object to be detected at different locations, that the radiation of the different light sources in each case has different physical properties, allowing for the reflected and/or scattered light returning to the associated light sources to be differentiated, and that the control and evaluation unit is equipped to output a switch signal on the basis of a logic operation of the detection signals returning to the individual light sources. The invention further relates to a method for detecting objects in a monitoring region.
PCT/EP2009/001643 2008-03-20 2009-03-06 Optical sensor and method for detecting objects WO2009115202A2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
KR1020107023309A KR101275075B1 (en) 2008-03-20 2009-03-06 Optical sensor and method for detecting objects
CN2009801099717A CN101978291A (en) 2008-03-20 2009-03-06 Optical sensor and method for detecting objects
EP09722314.3A EP2257840B1 (en) 2008-03-20 2009-03-06 Optical sensor and method for detecting objects

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202008003953.3 2008-03-20
DE202008003953U DE202008003953U1 (en) 2008-03-20 2008-03-20 Optical sensor

Publications (2)

Publication Number Publication Date
WO2009115202A2 WO2009115202A2 (en) 2009-09-24
WO2009115202A3 true WO2009115202A3 (en) 2010-05-27

Family

ID=39597986

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2009/001643 WO2009115202A2 (en) 2008-03-20 2009-03-06 Optical sensor and method for detecting objects

Country Status (5)

Country Link
EP (1) EP2257840B1 (en)
KR (1) KR101275075B1 (en)
CN (1) CN101978291A (en)
DE (1) DE202008003953U1 (en)
WO (1) WO2009115202A2 (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010013880A1 (en) * 2010-04-01 2011-10-06 M & H Inprocess Messtechnik Gmbh Measurement device for use in e.g. laser light barrier arrangement, for measuring change of measuring beam detected by machine tool, has control unit transferring measuring beam change as measurement signal to signal output for controller
DE102010038186A1 (en) 2010-10-14 2012-04-19 Sick Ag Optoelectronic sensor with line arrangement of single emitters
US10591421B1 (en) 2014-02-25 2020-03-17 Khs Gmbh Beverage bottle handling device for handling beverage bottles and similar containers in a beverage bottling or container filling plant
DE102014102449A1 (en) * 2014-02-25 2015-08-27 Khs Gmbh inspection device
DE102014102450A1 (en) * 2014-02-25 2015-08-27 Khs Gmbh Inspection device with inverse foil lens
CN104965234A (en) * 2015-07-22 2015-10-07 上海龙华汽车配件有限公司 Temperature sensor front seat defect detection method and device
FR3046023B1 (en) * 2015-12-23 2017-12-22 Pellenc Sa ANTICIPATING ELECTRIC MOWER AND METHOD FOR CONTROLLING SUCH MOWER.
ES2743298T3 (en) * 2016-10-27 2020-02-18 Pepperl Fuchs Ag Measuring device and procedure for triangulation measurement
KR101960079B1 (en) * 2018-12-18 2019-03-19 코어다 주식회사 Motion recognition apparatus and motion recognition system
EP3899877B1 (en) * 2018-12-20 2024-06-05 Sick Ag Sensor device for detecting a target object influenced by a process or formed during the process
KR102324977B1 (en) * 2020-02-18 2021-11-11 국민대학교산학협력단 Apparatus and method for recogniging led matrix based on dynamic qr code and system having the same

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19707417A1 (en) * 1996-05-24 1998-08-27 Leuze Electronic Gmbh & Co Optoelectronic device for monitoring surveillance zone
DE19951557A1 (en) * 1998-10-30 2000-05-11 Leuze Electronic Gmbh & Co Optoelectronic arrangement for detecting objects in monitored region has light transmitter and receiver with near and far elements for light from near and far objects
DE202006006482U1 (en) * 2005-05-06 2006-08-03 Leuze Electronic Gmbh & Co Kg Optical sensor for detecting objects in an observation range where received signals are analyzed to define a sample width with a threshold
DE29924961U1 (en) * 1998-03-17 2007-03-08 Leuze Electronic Gmbh & Co Kg Optoelectronic device for detecting objects in monitored region

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10128476C2 (en) * 2001-06-12 2003-06-12 Siemens Dematic Ag Optical sensor device for the visual detection of substrates

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19707417A1 (en) * 1996-05-24 1998-08-27 Leuze Electronic Gmbh & Co Optoelectronic device for monitoring surveillance zone
DE29924961U1 (en) * 1998-03-17 2007-03-08 Leuze Electronic Gmbh & Co Kg Optoelectronic device for detecting objects in monitored region
DE19951557A1 (en) * 1998-10-30 2000-05-11 Leuze Electronic Gmbh & Co Optoelectronic arrangement for detecting objects in monitored region has light transmitter and receiver with near and far elements for light from near and far objects
DE202006006482U1 (en) * 2005-05-06 2006-08-03 Leuze Electronic Gmbh & Co Kg Optical sensor for detecting objects in an observation range where received signals are analyzed to define a sample width with a threshold

Also Published As

Publication number Publication date
KR101275075B1 (en) 2013-06-17
CN101978291A (en) 2011-02-16
WO2009115202A2 (en) 2009-09-24
KR20110021733A (en) 2011-03-04
DE202008003953U1 (en) 2008-07-10
EP2257840B1 (en) 2019-02-06
EP2257840A2 (en) 2010-12-08

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