AT410847B - Arrangement for detecting and recognizing objects has camera in dust-tight encapsulated chambers behind housing structure forming fore-chamber with openings on object, objective sides - Google Patents
Arrangement for detecting and recognizing objects has camera in dust-tight encapsulated chambers behind housing structure forming fore-chamber with openings on object, objective sides Download PDFInfo
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- AT410847B AT410847B AT0018002A AT1802002A AT410847B AT 410847 B AT410847 B AT 410847B AT 0018002 A AT0018002 A AT 0018002A AT 1802002 A AT1802002 A AT 1802002A AT 410847 B AT410847 B AT 410847B
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Abstract
Description
AT 410 847 BAT 410 847 B
Gegenstand der Erfindung ist eine Vorrichtung gemäß dem Oberbegriff des Anspruches 1.The invention relates to a device according to the preamble of claim 1.
Bei derartigen Vorrichtungen zum Erfassen und Erkennen von Objekten, z.B. in Sortieranlagen, werden Kameras eingesetzt, an denen Objekte eines Materialstromes vorbeigeführt und von den Kameras entsprechend erkannt und zugeordnet werden. Diese Erkennung und Zuordnung kann sich auf verschiedene Eigenschaften der Objekte beziehen, wie Materialzusammensetzung, Farbe, Größe oder dergleichen. Die so gewonnenen Informationen dienen in weiterer Folge der Steuerung nachfolgender Prozessabläufe, oder auch der Steuerung einer Trennvorrichtung, die die Objekte in unterschiedliche Fraktionen sortiert.In such devices for detecting and recognizing objects, e.g. In sorting systems, cameras are used that pass objects of a material flow and are recognized and assigned accordingly by the cameras. This recognition and assignment can relate to various properties of the objects, such as material composition, color, size or the like. The information obtained in this way subsequently serves to control subsequent process sequences or also to control a separating device which sorts the objects into different fractions.
Bei den Objekten dieses Materialstromes handelt es sich meistens um Recyclingmaterialien. Die Objekte des Materialstromes können daher mitunter erheblich verschmutzt sein. Beim optischen Sortieren von Recyclingmaterialien (etwa Glas, Kunststoffe, Papier oder ähnliches) in Sortieranlagen gemäß dem Oberbegriff von Anspruch 1 stellt dieser hohe Verschmutzungsgrad der Aufgabegüter ein großes Problem dar, weil er zur Verschmutzung der optischen Geräte der Sortieranlage, insbesondere der Sensorik, führt. Die Sauberkeit des optischen Weges von Erfassungsund Erkennungseinheiten solcher Sortieranlagen ist für eine hohe Sortiergenauigkeit allerdings entscheidend.The objects of this material flow are mostly recycling materials. The objects of the material flow can therefore be considerably dirty. In the optical sorting of recycling materials (such as glass, plastics, paper or the like) in sorting systems according to the preamble of claim 1, this high degree of contamination of the feed goods is a major problem because it leads to the contamination of the optical devices of the sorting system, in particular the sensors. However, the cleanliness of the optical path of detection and recognition units of such sorting systems is crucial for high sorting accuracy.
Zur Erhaltung der Sauberkeit der optischen Wege wurden daher unterschiedliche Maßnahmen ergriffen. Eine Möglichkeit besteht darin, mechanische Reinigungseinrichtungen, wie z.B. Scheibenwischer, für die Sensorik zu verwenden. Eine andere Möglichkeit besteht darin, Abreinigungsvorrichtungen auf Basis flüssiger Medien, wie z.B. Wasser oder andere flüssige Reinigungsmittel, zu konstruieren. Diese Methoden haben allerdings den großen Nachteil, dass sie zu Störungen im Strahlengang führen, sei es durch mechanische Barrieren wie dem Scheibenwischer oder durch den Flüssigkeitsstrahl letztgenannter Vorrichtung. Störungen im Strahlengang oder teilweise Verdeckungen des optischen Weges können aber wiederum zu einer empfindlichen Störung des Sortierverhaltens der Trenneinrichtung führen.Various measures have therefore been taken to maintain the cleanliness of the optical paths. One possibility is to use mechanical cleaning devices, e.g. Windshield wipers to be used for the sensors. Another possibility is to use cleaning devices based on liquid media, e.g. Water or other liquid cleaning agents. However, these methods have the major disadvantage that they lead to interference in the beam path, be it through mechanical barriers such as the windshield wiper or through the liquid jet of the latter device. Disturbances in the beam path or partial obscurations of the optical path can in turn lead to a sensitive disturbance in the sorting behavior of the separating device.
Ziel der Erfindung ist es daher, die Sensorik eines Trenngerätes ohne Störung durch Komponenten bisheriger Abreinigungseinrichtungen sauber und funktionsfähig zu halten, damit eine einwandfreie Trennung des Aufgabegutes durchgeführt werden kann. Dies wird durch die Maßnahmen des kennzeichnenden Teiles von Anspruch 1 erreicht.The aim of the invention is therefore to keep the sensors of a separating device clean and functional without interference from components of previous cleaning devices, so that the feed material can be separated properly. This is achieved by the measures of the characterizing part of claim 1.
Anspruch 1 sieht dabei vor, die Kamera der Erfassungs- und Erkennungseinheit oben beschriebener Sortieranlagen mit einem labyrinthähnlichen Gehäuseaufbau zu versehen. Die entscheidenden Komponenten dieses Aufbaus sind einerseits Kammern entlang des Strahlenganges, die durch senkrecht zum Strahlengang angeordnete Wehren abgeschlossen werden und andererseits ein Kanalstück, das direkt an einem Sensorglas anschließt, welches die objektivseitige Öffnung des Gehäuseaufbaus bedeckt. Durch die Wahl mehrerer Kammern und dem vor dem Sensorglas des Objektivs der Kamera befindlichen Kanalstückes wird Verschmutzung sukzessive verringert.Claim 1 provides for the camera of the detection and recognition unit of the sorting systems described above to be provided with a labyrinth-like housing structure. The decisive components of this construction are, on the one hand, chambers along the beam path, which are closed off by weirs arranged perpendicular to the beam path, and, on the other hand, a channel piece that connects directly to a sensor glass that covers the lens-side opening of the housing construction. By selecting several chambers and the channel section located in front of the sensor glass of the camera lens, contamination is successively reduced.
Anspruch 2 sieht dabei vor, im Grenzbereich zwischen Sensorglas und Kanalstück bei Bedarf durch Druckluft einen Überdruck aulzubauen, der leichte Staubschwebeteilchen zusätzlich abhält. Anspruch 3 sieht dazu vorteilhafte Konstruktionsmaßnahmen vor. Gemäß Anspruch 4 kann außerdem jedes Wehr, etwa an der Ober- und Unterseite, mit Druckluftabblaseinrichtungen versehen werden, die das Freihalten der Sehschlitze unterstützen und Schmutz am Eindringen in das Kammersystem hindern. Anspruch 5 erleichtert die Reinigung des Gehäuseaufbaus zur Schmutzabweisung, etwa die Reinigung des Sensorglases auf der objektivseitigen Öffnung des Gehäuseaufbaus.Claim 2 provides, in the border area between the sensor glass and the duct piece, if necessary, to build up excess pressure by compressed air, which additionally prevents light dust particles. Claim 3 provides advantageous construction measures. According to claim 4, each weir, for example on the top and bottom, can be provided with compressed air blow-off devices which support the keeping of the viewing slits and prevent dirt from penetrating into the chamber system. Claim 5 facilitates the cleaning of the housing structure for dirt repellency, for example the cleaning of the sensor glass on the lens-side opening of the housing structure.
Da die Schmutzabweisung aufgrund einer vorteilhaft gewählten Geometrie eines entsprechenden Gehäuses und gegebenenfalls durch Druckluft erzielt wird, verursacht sie keine Beeinträchtigungen oder Unterbrechungen des Strahlenganges.Since the dirt repellency is achieved on the basis of an advantageously selected geometry of a corresponding housing and possibly by compressed air, it does not cause any impairments or interruptions in the beam path.
Die Erfindung soll nun anhand beiliegender Zeichnung (Figur 1) näher erläutert werden:The invention will now be explained in more detail with reference to the attached drawing (FIG. 1):
Figur 1 zeigt dabei schematisch die relative Anordnung von Kamera 1, Lichtquelle 2, Materialstrom sowie dem erfindungsgemäßen Gehäuseaufbau 3 zur Schmutzabweisung. Die Objekte 4 des Materialstromes, z.B. ein Sortiergut, gleiten eine lichtdurchlässige Rutsche 5, etwa eine Rutsche aus Glas, entlang und durchlaufen dabei den Beleuchtungsbereich von Lichtquellen 2. Die durch das Vorbeigleiten eines Objektes 4 bedingten Modifikationen des von der Lichtquelle 2 emittierten Lichts werden von Kameras 1 erfasst, womit Aufschluss über verschiedene Eigenschaf- 2Figure 1 shows schematically the relative arrangement of camera 1, light source 2, material flow and the housing structure 3 according to the invention for dirt repellency. The objects 4 of the material flow, e.g. a material to be sorted, slide along a translucent slide 5, for example a slide made of glass, and thereby pass through the illumination area of light sources 2. The modifications of the light emitted by the light source 2 caused by the sliding past of an object 4 are recorded by cameras 1, thus providing information about them different properties- 2
Claims (6)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT0018002A AT410847B (en) | 2001-02-20 | 2002-02-04 | Arrangement for detecting and recognizing objects has camera in dust-tight encapsulated chambers behind housing structure forming fore-chamber with openings on object, objective sides |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT0013101U AT4802U1 (en) | 2001-02-20 | 2001-02-20 | DEVICE FOR DETECTING AND DETECTING OBJECTS |
AT0018002A AT410847B (en) | 2001-02-20 | 2002-02-04 | Arrangement for detecting and recognizing objects has camera in dust-tight encapsulated chambers behind housing structure forming fore-chamber with openings on object, objective sides |
Publications (2)
Publication Number | Publication Date |
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ATA1802002A ATA1802002A (en) | 2002-12-15 |
AT410847B true AT410847B (en) | 2003-08-25 |
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AT0018002A AT410847B (en) | 2001-02-20 | 2002-02-04 | Arrangement for detecting and recognizing objects has camera in dust-tight encapsulated chambers behind housing structure forming fore-chamber with openings on object, objective sides |
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2085154A2 (en) | 2008-01-31 | 2009-08-05 | Axel Kulcke | Method, illumination device and system for spectral-based sorting |
WO2009135546A1 (en) * | 2008-05-07 | 2009-11-12 | Robert Bosch Gmbh | Device comprising projection means |
EP2236220A2 (en) | 2009-03-30 | 2010-10-06 | EVK DI Kerschhaggl Gmbh | Method, lighting device and system for optical detection of mobile objects |
US8269845B2 (en) | 2008-05-13 | 2012-09-18 | Evk Di Kerschhaggl Gmbh | Method for optically detecting moving objects |
-
2002
- 2002-02-04 AT AT0018002A patent/AT410847B/en not_active IP Right Cessation
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2085154A2 (en) | 2008-01-31 | 2009-08-05 | Axel Kulcke | Method, illumination device and system for spectral-based sorting |
WO2009135546A1 (en) * | 2008-05-07 | 2009-11-12 | Robert Bosch Gmbh | Device comprising projection means |
EP2277082B1 (en) * | 2008-05-07 | 2018-02-21 | Robert Bosch GmbH | Device comprising projection means |
US8269845B2 (en) | 2008-05-13 | 2012-09-18 | Evk Di Kerschhaggl Gmbh | Method for optically detecting moving objects |
EP2236220A2 (en) | 2009-03-30 | 2010-10-06 | EVK DI Kerschhaggl Gmbh | Method, lighting device and system for optical detection of mobile objects |
AT508060B1 (en) * | 2009-03-30 | 2011-07-15 | Evk Di Kerschhaggl Gmbh | METHOD, ILLUMINATION DEVICE AND SYSTEM FOR OPTICAL DETECTING OF MOVING OBJECTS |
EP2236220A3 (en) * | 2009-03-30 | 2011-08-03 | EVK DI Kerschhaggl Gmbh | Method, lighting device and system for optical detection of mobile objects |
US8885036B2 (en) | 2009-03-30 | 2014-11-11 | EKV di Kerschhaggl GmbH | Process, lighting equipment and system for the optical detection of moving objects |
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Publication number | Publication date |
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ATA1802002A (en) | 2002-12-15 |
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