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 PDFInfo
- 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- Withdrawn
Links
- 238000011156 evaluation Methods 0.000 abstract 1
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. 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.
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)
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)
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 |
-
1996
- 1996-12-20 DE DE1996153312 patent/DE19653312C1/en not_active Expired - Fee Related
-
1997
- 1997-11-28 EP EP97120897A patent/EP0849608A3/en not_active Withdrawn
Patent Citations (4)
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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Legal Events
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