DK2684618T3 - Device for identification of empty return containers - Google Patents

Device for identification of empty return containers Download PDF

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Publication number
DK2684618T3
DK2684618T3 DK12175491T DK12175491T DK2684618T3 DK 2684618 T3 DK2684618 T3 DK 2684618T3 DK 12175491 T DK12175491 T DK 12175491T DK 12175491 T DK12175491 T DK 12175491T DK 2684618 T3 DK2684618 T3 DK 2684618T3
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DK
Denmark
Prior art keywords
empty container
unit
light sources
optical identification
identification unit
Prior art date
Application number
DK12175491T
Other languages
Danish (da)
Inventor
Roy Gergs
Domenic Hartung
Original Assignee
Wincor Nixdorf Int 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.)
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Publication date
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Publication of DK2684618T3 publication Critical patent/DK2684618T3/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
    • B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
    • B07C5/04—Sorting according to size
    • B07C5/12—Sorting according to size characterised by the application to particular articles, not otherwise provided for
    • B07C5/122—Sorting according to size characterised by the application to particular articles, not otherwise provided for for bottles, ampoules, jars and other glassware
    • B07C5/126—Sorting according to size characterised by the application to particular articles, not otherwise provided for for bottles, ampoules, jars and other glassware by means of photo-electric sensors, e.g. according to colour
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07F—COIN-FREED OR LIKE APPARATUS
    • G07F7/00—Mechanisms actuated by objects other than coins to free or to actuate vending, hiring, coin or paper currency dispensing or refunding apparatus
    • G07F7/06—Mechanisms actuated by objects other than coins to free or to actuate vending, hiring, coin or paper currency dispensing or refunding apparatus by returnable containers, i.e. reverse vending systems in which a user is rewarded for returning a container that serves as a token of value, e.g. bottles
    • G07F7/0609—Mechanisms actuated by objects other than coins to free or to actuate vending, hiring, coin or paper currency dispensing or refunding apparatus by returnable containers, i.e. reverse vending systems in which a user is rewarded for returning a container that serves as a token of value, e.g. bottles by fluid containers, e.g. bottles, cups, gas containers

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Sorting Of Articles (AREA)
  • Control Of Vending Devices And Auxiliary Devices For Vending Devices (AREA)

Description

The invention relates to an apparatus for identifying empty containers in a reverse vending machine having a receiving unit containing a rotary element which is mounted about a horizontal rotation axis and which has at least one support surface for receiving the empty container in a first rotation position and for releasing said empty container in a second rotation position, having an optical identification unit for identifying characteristic features of the empty container, having a control unit for processing image data from the optical identification unit and for actuating the rotary element.
An apparatus for identifying empty containers in a reverse vending machine is known from WO 2011/089013 A1, which has a rotary element provided with vanes for receiving individually supplied empty containers. Three vanes, which are arranged offset to one another by 120°, are provided, which are rotatable about a horizontal rotation axis. To form a support surface for the empty containers to be received, two vanes are arranged inclined upward symmetrically in relation to a vertical plane. An optical identification unit is provided above the rotary element, by means of which characteristic features of the empty container positioned on the support surface, for example, the shape of the empty container, are identifiable. For example, the optical identification unit can be implemented as a camera, the image data of which are further processed in a control unit, so that after the empty container is identified, it can be supplied to a sorting unit. The shape identification of the empty container is based on the fact that the contour thereof can be established by the optical identification unit. It has been shown that in the case of empty containers having clear transparent lateral surfaces, an unambiguous establishment of the contour is not always possible because of reflections on these lateral surfaces.
The object of the present invention is therefore to refine an apparatus for identifying empty containers in a reverse vending machine in such a manner that the identification of characteristic features of the empty container is improved.
To achieve this object, the apparatus according to the invention in conjunction with the preamble of Patent Claim 1 is characterized in that an illumination device is provided for illuminating the empty container which is supported on the support surface of the rotary element in such a way that the empty container can be illuminated from a side of the empty container which is opposite the optical identification unit.
According to the invention, an illumination device is provided, by means of which an empty container to be detected by an optical identification unit is illuminated from a side of the empty container which is opposite the optical identification unit. In this way, a back light is generated, which substantially improves the ability to identify the contour of the empty container by means of the optical identification unit located opposite. In particular, in this way improved contrast of the contour of the empty container in comparison to the support surface can be provided, so that characteristic features, such as the shape in particular, of clear glass empty containers can be identified reliably and unambiguously.
According to one preferred embodiment of the invention, the illumination device comprises illumination means not only for generating a back light, but rather also illumination means, such that the empty container is illuminated from a side of the empty container which faces the optical identification unit. In this way, improved illumination of the empty container and its surroundings is achieved in the identification direction of the optical identification unit. Reliable and unambiguous identification of characteristic features of the empty container is always ensured by this illumination from both sides or multiple sides of the empty container.
According to one refinement of the invention, the illumination device comprises a lower illumination unit and an upper illumination unit, wherein the lower illumination unit has at least one light source which is arranged below a horizontal longitudinal center plane of the empty container, and wherein the upper illumination unit has at least one light source which is arranged above the horizontal longitudinal center plane of the empty container. In this way, comprehensive illumination of the empty container can advantageously be produced, which is preferably detectable by a single optical identification unit.
According to one refinement of the invention, the rotary element is in the form of a vane shaft, wherein the support surface for the empty container is formed by two vanes which project from the rotation axis at an obtuse angle in relation to one another, and which extend inclined upward with respect to a vertical plane and symmetrically to the vertical plane originating from the rotation axis. The vanes are composed of a translucent material, so that the light emitted from the lower illumination unit can be incident on the empty container.
According to one preferred embodiment of the invention, the vanes of the rotary element are in the form of flat light guides, which light can be coupled into via a narrow side thereof facing the rotation axis and can be coupled out on opposing flat sides thereof. In this way, a back light can be generated in a space-saving manner, since the at least one light source can press directly against a narrow side of the vane. The vanes are therefore used for the space-saving deflection and emission of the light emitted from the light source in the direction of the empty container.
According to one preferred embodiment of the invention, the light sources are in the form of LED light sources, which are arranged fixed in place along a rotation axis of the vane shaft. The light sources are positioned in this case so that in a receiving rotational position of the vane shaft, the light can always be coupled into narrow sides of the upper two vanes. The production expenditure can be significantly reduced in this way.
According to a further embodiment of the invention, the lower illumination unit can have at least one light source which is arranged at a distance to the vanes forming the support surface and below said vanes. The at least one light source is positioned so close in the direction of the vertical plane extending through the rotation axis that the sorting of the empty containers is not obstructed.
Further advantages of the invention result from the further dependent claims.
Exemplary embodiments of the invention will be explained in greater detail hereafter on the basis of the figures.
In the figures:
Figure 1 shows a schematic side view of a receiving unit according to a first embodiment,
Figure 2shows a schematic side view of the receiving unit according to a second embodiment,
Figure 3shows a perspective illustration of a receiving unit according to a third embodiment, and
Figure 4shows a front view of the receiving unit according to Figure 3.
The apparatus according to the invention for identifying empty containers in a reverse vending machine essentially comprises a receiving unit 1 for receiving empty containers 2 to be supplied sequentially, an optical identification unit 3 for identifying characteristic features of the supplied empty container 2, and an illu- mination device 4 for illuminating the empty container 2 positioned in the receiving unit.
The empty container 2 is preferably in the form of a transparent bottle, which can be produced from a glass or plastic material (PET).
The receiving unit 1 is arranged integrated in a reverse vending machine and is accessible via an opening (not shown) of the reverse vending machine. The receiving unit 1 has a rotary element 5 which is mounted so it is rotatable about a horizontal rotation axis D and is in the form of a vane shaft. This vane shaft 5 has three vanes 6, 6', 6", which are arranged offset by 120° about the rotation axis D and which preferably have equal axial and radial lengths. To receive an empty container 2, the vane shaft 5 is located in a first rotational position shown in Figure 1, in which two upper vanes 6, 6' are arranged symmetrically to a vertical plane V extending through the rotation axis D. They each enclose an angle of 60° in relation to the vertical plane. In this first rotational position, the upper sides of the upper vanes 6, 6' form a support surface on which the empty container 2 can be placed by a user. Subsequently thereto, identification of characteristic features of the empty container 2 is performed before the vane shaft 5 is activated by means of a control unit in such a way that the vane shaft 5 moves into a second rotational position, in which the empty container 2 is supplied for the sorting to a determined collection container. After all empty containers have been identified, a receipt having the corresponding deposit value of the empty containers is printed out for the user. If it is identified by the apparatus according to the invention that the empty container 2 is not suitable for further processing, a feedback signal is generated so that the user can remove the rejected empty container 2 from the receiving unit 1.
The illumination device 4 is provided for identifying characteristic features of the empty container 2, such as preferably the shape of the empty container 2. It comprises illumination means, so that the empty container 2 positioned in the receiving unit 1 can be illuminated from at least two opposite sides of the empty container 2. The illumination device 4 has, on the one hand, an upper illumination unit 4', which is arranged on the same side as the optical identification unit 3 in relation to the empty container 2 or the vane shaft 5. The upper illumination unit 4' is arranged - like the identification unit 3 - above a horizontal center plane M of the empty container 2. The upper illumination unit 4' has two lights 7, for example, which are arranged on both sides of the vertical plane V at a vertical dis tance to the empty container 2 and the vane shaft 5. As can be seen from Figure 1, the lights 7 of the upper illumination unit 4 are arranged at the height of the optical identification unit 3, which is in the form of a CCD camera. The upper illumination unit 4' preferably generates a diffuse incident light illumination L1, by means of which the empty container 2 is illuminated in the identification direction 8 of the optical identification unit 3.
Furthermore, the illumination device 4 comprises a lower illumination unit 4" having lights 9 or LED light sources as the illumination means, which are arranged in rows in the axial direction in the region of the rotation axis D and which couple light L2 into the two upper vanes 6, 6', which are in the form of flat light guides. The light coupled into the vanes 6, 6' is totally reflected in the region of flat sides 10, 10' of the vanes 6, 6' and coupled out by means of coupling elements (not shown) at least in the direction of a side facing the empty container 2. The vanes 6, 6', 6" have a translucent material, so that the light L2 which is coupled in can be coupled out by means of integrated coupling-out elements on the flat sides 10, 10' and can be used for illuminating the empty container 2 from below. Since in the case of sequential receiving of the empty containers 2, each vane 6, 6', 6" on both sides of the vertical plane V can assume a rotational position which receives the empty container 2, the light L2 must be able to be coupled out on both flat sides 10, 10'. The vane shaft 5 is preferably driven in a predefined rotational direction 11. The upper vanes 6, 6' therefore form self-illuminated surfaces, which can be used to illuminate the empty container 2 from below.
The LED light sources 9, which are arranged in rows, are preferably arranged fixed in place in the region of the rotation axis D, so that the design outlay can be kept low. The vanes 6, 6', 6" preferably each have convex narrow sides as the light coupling-in surfaces, which face the rotation axis D, but are mounted rotatably at a distance to the fixedly arranged LED light sources 9.
The lower illumination unit 4" therefore enables illumination of the empty container 2 from below or a back light illumination which is oriented opposite to the identification direction 8. The lower illumination unit 4" is located below the horizontal center plane M of the empty container 2 or the LED light sources 9 are located below the empty container 2.
According to a second embodiment of the invention according to Figure 2, an apparatus for identifying empty containers 2 is shown, which differs from the em bodiment according to Figure 1 by way of a different embodiment of the lower illumination unit 14.
Identical components or component functions are provided with identical reference signs.
The lower illumination unit 14 is formed by two lights 15, which are arranged on both sides of the vertical plane V and below the upper vanes 6, 6'. They each emit a light bundle L2', which is oriented on the upper vanes 6, 6'. The lights 15 are positioned sufficiently far inward or in the direction of the vertical plane V that sorting of the empty containers 2 is not obstructed. In contrast to the vanes 6, 6', 6" of the lower illumination unit 4" according to the first embodiment according to Figure 1, the vanes 6, 6', 6" of the lower illumination unit 14 according to the second embodiment according to Figure 2 must only be transparent, so that the light bundle L2' for illuminating the empty container 2 can be conducted through from below. The vanes 6, 6', 6" of the lower illumination unit 14 do not have to have additional coupling-out elements.
According to a further embodiment of the invention according to Figures 3 and 4, the rotary element 5 consists of vanes 16, 16', 16", which are in the form of a propeller and taper radially outward, and which are rotatably mounted with respect to the rotation axis D in the rotational direction 11. The vanes 16, 16', 16" run together centrally to a shared bearing tube 17, which is rotatably mounted with respect to the rotation axis D. A triangular mounting is provided within this bearing tube 17, on which the LED light sources 9 described according to the embodiment according to Figure 1 are arranged fixed in place so that the light emitted thereby is coupled into the narrow sides of the upper vanes 16, 16'. For this purpose, the LED light sources 9 are arranged in two axial rows, wherein one row is arranged oriented toward the first vane 16 and the second row of the LED light sources 9 is arranged oriented toward the second vane 16'.
The rotary element 5 is mounted in a housing frame 19, which is also used to receive an optical identification unit 3'. Said unit is fastened on one side of the housing frame 19 and cooperates with a mirror 20 fastened on an opposite side of the housing frame 19 so that an empty container arranged on the upper vanes 16, 16' is detectable.
The vanes 16, 16', 16" have - as in the first embodiment of the invention accord- ing to Figure 1 - flat sides 10, 10' made of a translucent material. A light guide (not shown), which deflects the light L3 emitted from the LED light sources 9 homogeneously by an acute or obtuse angle in the direction of the empty container, is provided between opposing flat sides 10, 10' of each vane 16, 16', 16".
It is obvious that the above-mentioned features can be used alone or in groups in any desired combination with one another. The described exemplary embodiments are not to be understood as an exhaustive list, but rather have exemplary character for the description of the invention. In particular, the vanes can also consist of a transparent and translucent material. For example, the upper illumination unit can also be omitted if sufficient illumination from above is ensured in another manner.
List of reference signs 1 receiving unit 2 empty container 3 optical identification unit 4, 4', 4"iliumination device 5 rotary element/vane shaft 6, 6', 6"vanes 7 lights 8 identification direction 9 lights/LED light sources 10, 10' flat side 11 rotational direction 14 lower illumination unit 15 light sources 16, 16', 16" vanes 17 bearing tube 18 mounting 19 housing frame 20 mirror D rotation axis L1 diffuse incident light illumination L2 light L3 light M center plane V vertical plane

Claims (10)

1. Apparat til identificering af tomme returbeholdere i en returautomat, - med en modtageenhed indeholdende et drejeorgan, som er lejret om en vandret rotationsakse, og som har mindst en støtteflade til optagelse af den tomme beholder i en første d rej est ill ing og til frigørelse af den tomme beholder i en anden drejestilling, - med en optisk identifikationsenhed til identificering af karakteristiske træk ved den tomme beholder, - med en styreenhed til behandling af billeddata fra den optiske identifikationsenhed og til aktivering af drejeorganet, kendetegnet ved, at en belysningsindretning (4) er tilvejebragt til belysning af den tomme beholder (2), som ligger på drejeorganets (5) støtteflade (6, 6’) på sådan måde, at den tomme beholder (2) kan belyses fra en side af den tomme beholder (2), som er overfor den optiske identifikationsenhed (3).1. Apparatus for identifying empty return containers in a return dispenser, - with a receiving unit containing a swivel mounted on a horizontal axis of rotation and having at least one support surface for accommodating the empty container in a first draft and for releasing the empty container in a second pivot position, - with an optical identification unit for identifying characteristic features of the empty container, - with a control unit for processing image data from the optical identification unit and for activating the rotary device, characterized in that a lighting device ( 4) is provided for illuminating the empty container (2) which is on the support surface (6, 6 ') of the rotary member (5) in such a way that the empty container (2) can be illuminated from one side of the empty container (2) ) which is opposite the optical identification unit (3). 2. Apparat ifølge krav 1, kendetegnet ved, at belysningsindretningen (4) omfatter belysningsmidler, sådan at den støttede tomme beholder (2) kan belyses både fra en side af den tomme beholder (2), som vender mod den optiske identifikationsenhed (3) såvel som fra den side af den tomme beholder (2), som vender væk fra den optiske identifikationsenhed (3).Apparatus according to claim 1, characterized in that the illumination device (4) comprises illuminating means such that the supported empty container (2) can be illuminated both from one side of the empty container (2) facing the optical identification unit (3). as well as from the side of the empty container (2) facing away from the optical identification unit (3). 3. Apparat ifølge krav 1 eller 2, kendetegnet ved, at belysningsindretningen (4) har en nedre belysningsenhed (4”, 14) til belysning af den tomme beholder (2) fra den side af den tomme beholder (2), som er overfor den optiske identifikationsenhed (3), hvilken nedre belysningsenhed omfatter mindst en lyskilde (9, 15), som er arrangeret under et vandret midterplan (M) for den tomme beholder (2).Apparatus according to claim 1 or 2, characterized in that the illumination device (4) has a lower illumination unit (4 ”, 14) for illuminating the empty container (2) from the side of the empty container (2) facing the optical identification unit (3), the lower illumination unit comprising at least one light source (9, 15) arranged below a horizontal center plane (M) of the empty container (2). 4. Apparat ifølge ethvert af de foregående krav, kendetegnet ved, at belysningsindretningen (4) har en øvre belysningsenhed (4’) til belysning af den tomme beholder (2) fra den side af den tomme beholder (2), som vender mod den optiske identifikationsenhed (3), hvilken øvre belysningsenhed omfatter mindst en lyskilde (7), som er arrangeret over et vandret midterplan (M) for den tomme beholder (2).Apparatus according to any one of the preceding claims, characterized in that the lighting device (4) has an upper lighting unit (4 ') for illuminating the empty container (2) from the side of the empty container (2) facing it. optical identification unit (3), said upper illumination unit comprising at least one light source (7) arranged over a horizontal center plane (M) of said empty container (2). 5. Apparat ifølge ethvert af de foregående krav, kendetegnet ved, at drejeorganet (5) er i form af en vingeaksel, hvori støttefladen er dannet af to vinger (6, 6’), der rager ud fra rotationsaksen (D) i en stump vinkel i forhold til hinanden.Apparatus according to any one of the preceding claims, characterized in that the turning means (5) is in the form of a blade shaft, in which the supporting surface is formed by two blades (6, 6 ') protruding from the axis of rotation (D) in a blunt angle to each other. 6. Apparat ifølge ethvert af de foregående krav, kendetegnet ved, at vingerne (6, 6’, 6”) på drejeorganet (5) består af et gennemskinneligt og/eller gennemsigtigt materiale.Apparatus according to any one of the preceding claims, characterized in that the blades (6, 6 ', 6 ") of the swivel (5) consist of a translucent and / or transparent material. 7. Apparat ifølge ethvert af de foregående krav, kendetegnet ved, at den nedre belysningsenhed (14) omfatter lyskilder (15) tilknyttet vingerne (6, 6’), som danner støttefladen, og hvilke lyskilder er arrangeret på begge sider af et lodret plan (V), der forløber gennem vingeakslens (5) rotationsakse (D) og under vingerne (6, 6’), der danner støttefladen.Apparatus according to any one of the preceding claims, characterized in that the lower illumination unit (14) comprises light sources (15) associated with the wings (6, 6 ') forming the supporting surface and which light sources are arranged on both sides of a vertical plane. (V) extending through the axis of rotation (D) of the blade shaft (5) and under the wings (6, 6 ') forming the support surface. 8. Apparat ifølge ethvert af de foregående krav, kendetegnet ved, at den nedre belysningsenhed (4”) har et antal lyskilder (9), som er arrangeret i området for vingeakslens (5) rotationsakse (D), og at vingerne (6, 6’, 6”) er udformet som flade lysledere, så at lyset (L2) udsendt fra lyskilderne på den drejeaksen (D) tilvendte smalside af vingerne, der danner støttefladen, kan tilkobles vingerne og udkobles på en flad side (10) af vingerne, og som vender mod den tomme beholder (2).Apparatus according to any one of the preceding claims, characterized in that the lower illumination unit (4 ") has a plurality of light sources (9) arranged in the region of the axis of rotation (D) of the blade shaft (5) and that the wings (6, 6 ', 6 ") are designed as flat light guides, so that the light (L2) emitted from the light sources on the turned axis side (D) of the wings forming the supporting surface can be engaged and turned off on a flat side (10) of the wings , and facing the empty container (2). 9. Apparat ifølge ethvert af de foregående krav, kendetegnet ved, at lyskilderne (9, 15) er arrangeret på stationær måde.Apparatus according to any one of the preceding claims, characterized in that the light sources (9, 15) are arranged in a stationary manner. 10. Apparat ifølge ethvert af de foregående krav, kendetegnet ved, at lyskilderne er i form af LED lyskilder (9).Apparatus according to any one of the preceding claims, characterized in that the light sources are in the form of LED light sources (9).
DK12175491T 2012-07-09 2012-07-09 Device for identification of empty return containers DK2684618T3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20120175491 EP2684618B1 (en) 2012-07-09 2012-07-09 Device for recognising empty containers

Publications (1)

Publication Number Publication Date
DK2684618T3 true DK2684618T3 (en) 2015-01-12

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DK12175491T DK2684618T3 (en) 2012-07-09 2012-07-09 Device for identification of empty return containers

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DK (1) DK2684618T3 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3208781B1 (en) * 2016-02-22 2020-08-26 Wincor Nixdorf International GmbH Empties return device

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO152065C (en) * 1983-02-24 1985-07-24 Tomra Systems As PROCEDURE FOR CONTINUOUS RECOGNITION OF TOTAL OR PARTIAL TRANSPARENT GOODS, EX. BOTTLES
GB2288016B (en) * 1994-03-31 1998-05-13 Tomra Systems As Device for generating,detecting and recognizing a contour image of a liquid container
JP3104949B2 (en) * 1994-04-12 2000-10-30 株式会社栗本鐵工所 Waste bottle sorting device
NO322775B1 (en) * 2004-09-24 2006-12-11 Tomra Systems Asa Device and method for detecting a medium
WO2011089013A1 (en) 2010-01-25 2011-07-28 Wincor Nixdorf International Gmbh Device and method for recognizing characteristic features of an empties container

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EP2684618A1 (en) 2014-01-15

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