EP0849608A3 - Device for determining the position of the edge of a moving belt - Google Patents

Device for determining the position of the edge of a moving belt Download PDF

Info

Publication number
EP0849608A3
EP0849608A3 EP97120897A EP97120897A EP0849608A3 EP 0849608 A3 EP0849608 A3 EP 0849608A3 EP 97120897 A EP97120897 A EP 97120897A EP 97120897 A EP97120897 A EP 97120897A EP 0849608 A3 EP0849608 A3 EP 0849608A3
Authority
EP
European Patent Office
Prior art keywords
edge
retroreflector
determining
directed
detected
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.)
Withdrawn
Application number
EP97120897A
Other languages
German (de)
French (fr)
Other versions
EP0849608A2 (en
Inventor
Thomas Dipl.-Ing. Sauer
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.)
Fife GmbH
Original Assignee
Fife 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 Fife GmbH filed Critical Fife GmbH
Publication of EP0849608A2 publication Critical patent/EP0849608A2/en
Publication of EP0849608A3 publication Critical patent/EP0849608A3/en
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H23/00—Registering, tensioning, smoothing or guiding webs
    • B65H23/02—Registering, tensioning, smoothing or guiding webs transversely
    • B65H23/0204—Sensing transverse register of web
    • B65H23/0216—Sensing transverse register of web with an element utilising photoelectric effect

Landscapes

  • Length Measuring Devices By Optical Means (AREA)

Abstract

Die vorgeschlagene Vorrichtung zur Bestimmung der räumlichen Lage wenigstens eines Randes eines laufenden Bandes hat einen mit Spiegelfacetten besetzten Drehspiegel 18, auf den an voneinander beabstandeten Rückwurfstellen R1, R2 auftreffende Peilstrahlen 15, 21 gerichtet sind. Die rückgeworfenen Peilstrahlen bestreichen das Beobachtungsfeld, in dem das Band vor einem Retroreflektor 4 läuft. Solange die Peilstrahlen auf den Retroreflektor fallen, werden sie retroreflektiert und von einem Empfänger 28, 33 erfaßt, dessen Signal endet, wenn der jeweilige Peilstrahl vom Retroreflektor auf den Rand des Bandes übergeht. Damit sind die Impulsrückflanken eindeutig mit der Winkellage jedes Peilstrahls beim Erfassen des Bandrandes verknüpft und die Auswerteschaltung kann aus diesen beiden Peilstrahllagen die räumliche Lage des Bandrandes ermitteln.

Figure 00000001
The proposed device for determining the spatial position of at least one edge of a running belt has a rotating mirror 18 which is equipped with mirror facets and on which the direction-finding beams 15, 21 which are directed at spaced-apart throwing points R 1 , R 2 are directed. The reflected directional beams sweep the observation field in which the tape runs in front of a retroreflector 4. As long as the beacons fall on the retroreflector, they are retroreflected and detected by a receiver 28, 33, the signal of which ends when the respective beacon passes from the retroreflector to the edge of the tape. The pulse trailing edges are thus clearly linked to the angular position of each direction finding beam when the band edge is detected, and the evaluation circuit can determine the spatial position of the band edge from these two direction finding positions.
Figure 00000001
EP97120897A 1996-12-20 1997-11-28 Device for determining the position of the edge of a moving belt Withdrawn EP0849608A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19653312 1996-12-20
DE1996153312 DE19653312C1 (en) 1996-12-20 1996-12-20 Detector for edge of belt between retro-reflector and sensor

Publications (2)

Publication Number Publication Date
EP0849608A2 EP0849608A2 (en) 1998-06-24
EP0849608A3 true EP0849608A3 (en) 1998-08-19

Family

ID=7815546

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97120897A Withdrawn EP0849608A3 (en) 1996-12-20 1997-11-28 Device for determining the position of the edge of a moving belt

Country Status (2)

Country Link
EP (1) EP0849608A3 (en)
DE (1) DE19653312C1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005002189B4 (en) * 2005-01-17 2007-02-15 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Device for determining the angular position of a light beam and method for operating a device for determining the angular position of a light beam
DE102007054596A1 (en) 2007-11-15 2009-05-20 Pepperl + Fuchs Gmbh Optical sensor and method for determining the position of objects
EP2093173B1 (en) 2008-02-19 2013-06-12 Texmag GmbH Vertriebsgesellschaft Method and device for detecting orientation characteristics on a web of material
AT509180B1 (en) * 2009-11-19 2016-01-15 Riegl Laser Measurement Sys OPTOELECTRONIC MEASURING SYSTEM
DE102017127420A1 (en) 2017-11-21 2019-05-23 Sick Ag Polygon scanner and method for capturing objects in a surveillance area

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1191591B (en) * 1958-01-17 1965-04-22 Licentia Gmbh Method for photoelectrically determining the relative position of at least one edge of an object
US4021031A (en) * 1975-12-08 1977-05-03 Butler Automatic, Inc. Web alignment system
US4523093A (en) * 1981-09-03 1985-06-11 Excellon Industries Scanning beam reference and read system
US4788441A (en) * 1985-12-16 1988-11-29 Acme-Cleveland Corporation Range finder wherein distance between target and source is determined by measuring scan time across a retroreflective target

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1191591B (en) * 1958-01-17 1965-04-22 Licentia Gmbh Method for photoelectrically determining the relative position of at least one edge of an object
US4021031A (en) * 1975-12-08 1977-05-03 Butler Automatic, Inc. Web alignment system
US4523093A (en) * 1981-09-03 1985-06-11 Excellon Industries Scanning beam reference and read system
US4788441A (en) * 1985-12-16 1988-11-29 Acme-Cleveland Corporation Range finder wherein distance between target and source is determined by measuring scan time across a retroreflective target

Also Published As

Publication number Publication date
EP0849608A2 (en) 1998-06-24
DE19653312C1 (en) 1998-04-02

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