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WO2009103411A1 - Goods detection in self-checkout systems - Google Patents

Goods detection in self-checkout systems Download PDF

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Publication number
WO2009103411A1
WO2009103411A1 PCT/EP2009/000684 EP2009000684W WO2009103411A1 WO 2009103411 A1 WO2009103411 A1 WO 2009103411A1 EP 2009000684 W EP2009000684 W EP 2009000684W WO 2009103411 A1 WO2009103411 A1 WO 2009103411A1
Authority
WO
WIPO (PCT)
Prior art keywords
goods
scanning
transport device
scanning units
housing
Prior art date
Application number
PCT/EP2009/000684
Other languages
German (de)
French (fr)
Inventor
Josef Twiste
Original Assignee
Wincor Nixdorf International 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 Wincor Nixdorf International Gmbh filed Critical Wincor Nixdorf International Gmbh
Priority to EP09713585A priority Critical patent/EP2248116A1/en
Publication of WO2009103411A1 publication Critical patent/WO2009103411A1/en

Links

Classifications

    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07G—REGISTERING THE RECEIPT OF CASH, VALUABLES, OR TOKENS
    • G07G1/00—Cash registers
    • G07G1/0036—Checkout procedures
    • G07G1/0045—Checkout procedures with a code reader for reading of an identifying code of the article to be registered, e.g. barcode reader or radio-frequency identity [RFID] reader
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
    • G06K7/10544—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation by scanning of the records by radiation in the optical part of the electromagnetic spectrum
    • G06K7/10554—Moving beam scanning
    • G06K7/10594—Beam path
    • G06K7/10683—Arrangement of fixed elements
    • G06K7/10693—Arrangement of fixed elements for omnidirectional scanning
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
    • G06K7/10544—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation by scanning of the records by radiation in the optical part of the electromagnetic spectrum
    • G06K7/10821—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation by scanning of the records by radiation in the optical part of the electromagnetic spectrum further details of bar or optical code scanning devices
    • G06K7/10831—Arrangement of optical elements, e.g. lenses, mirrors, prisms
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07G—REGISTERING THE RECEIPT OF CASH, VALUABLES, OR TOKENS
    • G07G1/00—Cash registers
    • G07G1/0018—Constructional details, e.g. of drawer, printing means, input means

Definitions

  • the invention is based on a device for detecting the goods on a self-service cash register system.
  • Such devices are used to capture the goods selected by a customer in a self-service department store.
  • the collection of goods should be automatic, in order to be able to waive the presence of a cashier when paying for the goods.
  • SeIf checkout Customer independently collects and pays the goods selected by him, without relying on the presence of a cashier, is called SeIf checkout.
  • the goods are recorded with or without the support of the customer and the purchase price of the recorded goods is calculated.
  • the customer then pays his purchase in cash, by debit card or credit card directly to the self-service checkout system.
  • the goods are equipped with a machine-readable marking or a machine-readable code.
  • the mark or the code is, for example, a one-dimensional, two-dimensional or other multi-dimensional bar code. This is also called a barcode or barcode.
  • the machine-readable mark contains, inter alia, the price of the goods.
  • the customer places his goods selected by him on a transport device, such as a conveyor belt.
  • a transport device such as a conveyor belt.
  • one or more scanning devices are arranged stationary on the transport device.
  • the scanner consists of several scanning units. Each scanning unit is equipped with a source for emitting optical radiation and with a detector for receiving the radiation reflected by the goods lying on the transport means.
  • the optical radiation is light of the visible wavelength range or the infrared wavelength range.
  • Scanning unit generates a scanning pattern by means of pattern forming mirrors, which is imaged on the scanned goods and is reflected by the goods.
  • the scanning unit also generates a signal corresponding to the reflected radiation.
  • Such scanning units are also called bar code readers or scanners. Often these are so-called laser scanner modules. They transmit the optically scanned machine readable mark into electrical signals which are input in digital form as an input to a data processing unit of a self-service cash register system.
  • the scanning units typically have a field of view centered about an optical axis and line of sight. Scanning devices for operated cash registers, which are equipped with a cashier, have only individual
  • Target axes or fields of view They therefore require a precise positioning of the goods with respect to the scanning device, so that the machine-readable mark or the code is aligned in the direction of the scanning unit.
  • Most goods are only marked with a mark in one place.
  • Such scanners are not possible in self-service checkout systems that are not equipped with a cashier, and in which the goods lying on a transport device are automatically scanned, since the customer usually does not pay attention to place the goods on the transport device such that the marking on the goods points in the direction of the scanning device. Particularly difficult is the scanning of the
  • Devices for detecting the goods on a self-service checkout system are therefore usually provided with multiple scanning devices
  • Scanning units equipped which are arranged at different positions on and above the transport device. Such devices are also referred to as tunnel scanners.
  • the individual scanning units are in this case arranged in a stationary manner over an archway that is exciting over the transport device.
  • the present invention is based on the object, a device for
  • Provision of goods to provide a self-service cashier system that is inexpensive to manufacture and reliably detects the machine-readable mark or the code of a product regardless of their orientation on a transport device.
  • the device according to the invention with the features of claim 1 is characterized in that are arranged between or next to the plurality of scanning units laterally from and / or above the transport means mirrors. If the optical radiation emitted by the sources of the scanning units and reflected by the surfaces of the product does not impinge on a detector of one of the scanning units but on a mirror, then it is reflected by it in the direction of a detector. Even with a small number of scanning units, almost all of the optical radiation reflected from the surface of the goods is fed to the detectors of the scanning units. The machine-readable markings of the goods are thus detected in a reliable manner. Since this does not increase the number of scanning units but only a plurality of mirrors are used, the device according to the invention is inexpensive to manufacture.
  • Markings on the goods are collected increased.
  • the goal here is to capture the goods with a probability of 100% or nearly 100%, while increasing the speed of the acquisition process.
  • the reliability or probability is also referred to as the sampling rate, read rate or scan rate.
  • the device is equipped with a housing for the scanning device.
  • the scanning units and the mirrors are arranged in the housing. In this way, the scanning units and the mirrors are protected from damage. Furthermore, they can not be manipulated by customers.
  • the housing is arranged laterally and above the transport device and surrounds a portion of the transport device in the manner of an archway.
  • the product lying on the transport device is through the opening of the archway-like
  • the housing transported.
  • the opening of the archway and thus the housing is so large that even large, lying on the transport goods can be passed through the housing of the scanner.
  • the housing further extends in the transport direction of the transport device over a portion along the transport device and has a length in this direction.
  • several scanning units in the transport direction in the housing can be arranged side by side.
  • scanning units and mirrors can be arranged in the housing side by side in the transport direction. Due to the size of the housing, the distance between the arranged in the housing
  • a total of four scanning units are arranged in the housing: one above the conveyor belt, one right of the conveyor belt, one left of the conveyor belt, and one below the predetermined by the conveyor belt goods transport plane.
  • the additional mirrors are arranged in front of and behind the scanning units in the transport direction.
  • the scanning units can also be arranged only on two sides of the housing. The two others
  • the housing of the scanning device and the transport device span a space that bulges outwardly above the transport device.
  • the housing is round at least in an upwardly facing portion.
  • the housing and the transport device span a space perpendicular to the transport direction of the transport device has a polygonal cross-section.
  • the housing consists for example of two lateral sections, which are arranged perpendicular to the transport device, and one or more sections above the transport device. The sections above the transport device can thereby run parallel to the transport device or at an angle to the plane formed by the transport device.
  • the mirrors are mounted on rotatable drive shafts, which are driven by at least one drive unit. This increases the likelihood that the rays reflected from the goods will be redirected by the mirrors to a scanning device.
  • FIG. 1 shows a device for detecting the goods on a self-service check system with a conveyor belt 1, a total of four scanning units. 2 and 8 mirrors 3.
  • the four scanning units 2 form a scanning device.
  • the scanning units 2 and the mirrors 3 are arranged in a housing 4. At the side of the housing facing the conveyor belt, the scanning units 2 and the mirrors 3 are covered by a glass plate 5, which has a high intensity for the radiation emitted by a source of the scanning units 2
  • the sources of the scanning units are not shown in the drawing. Through the transparent glass plate 5, the scanning units 2 and the mirror 3 are visible.
  • the scanning units 2 and the mirror 3 can be seen. On the other two sides they are hidden in the representation by the housing.
  • the scanning units 2 extend over the entire width of the housing perpendicular to the transport direction of the conveyor belt first
  • the conveyor belt 1 consists of two sections. A first section is at the foreground of Figure 1 and leads the goods up to the housing of the scanning units 2 and the mirror 3. A second section is located in the background of Figure 1. It supplies the goods to other stations after scanning.
  • the device according to FIG. 1 is also referred to as a tunnel scanner, since the goods lying on the conveyor belt pass by the scanning units as in a tunnel.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Artificial Intelligence (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Theoretical Computer Science (AREA)
  • Cash Registers Or Receiving Machines (AREA)

Abstract

The invention relates to a device for detecting goods in a self-checkout system, comprising a transport device (1) for transporting the goods, at least one scanning device fore detecting machine-readable codes with which the goods are equipped, the scanning device being arranged stationary on the transport device (1), a plurality of scanning units (2) of the scanning device, which are equipped with a source for emitting optical radiation into the direction of the transport device (1) and a detector for receiving the radiation reflected by the goods lying on the transport device (1) and for producing a signal which corresponds to the intensity of the reflected radiation, an arrangement of the scanning units (2) at different positions laterally or and/or above the transport device (1) for scanning the goods in a plurality of directions and a plurlaity of mirrors (3) which are arranged between the scanning units (2) and/or next to the scanning units (2).

Description

Warenerfassung an Selbstbedienungskassensystemen Goods acquisition at self-service checkout systems
Die Erfindung geht aus von einer Vorrichtung zur Erfassung der Waren an einem Selbstbedienungskassensystem.The invention is based on a device for detecting the goods on a self-service cash register system.
Derartige Vorrichtungen dienen zur Erfassung der von einem Kunden ausgewählten Waren in einem Selbstbedienungswarenhaus. Die Erfassung der Waren soll automatisch erfolgen, um bei der Bezahlung der Waren auf die Anwesenheit eines Kassierers verzichten zu können. Der Vorgang, bei dem derSuch devices are used to capture the goods selected by a customer in a self-service department store. The collection of goods should be automatic, in order to be able to waive the presence of a cashier when paying for the goods. The process in which the
Kunde die von ihm ausgewählten Waren eigenständig erfasst und bezahlt, ohne dabei auf die Anwesenheit einer Kassierkraft angewiesen zu sein, wird als SeIf- Checkout bezeichnet. Hierbei werden die Waren mit oder ohne Unterstützung des Kunden erfasst und der Kaufpreis der erfassten Waren berechnet. Der Kunde zahlt anschließend seinen Einkauf bar, per EC-Karte oder Kreditkarte direkt an dem Selbstbedienungskassensystem. Die Waren sind mit einer maschinenlesbaren Markierung oder einem maschinenlesbaren Code ausgestattet. Bei der Markierung oder dem Code handelt es sich beispielsweise um einen eindimensionalen, zweidimensionalen oder sonstigen mehrdimensio- nalen Strichcode. Dieser wird auch als Balkencode oder Barcode bezeichnet.Customer independently collects and pays the goods selected by him, without relying on the presence of a cashier, is called SeIf checkout. Here, the goods are recorded with or without the support of the customer and the purchase price of the recorded goods is calculated. The customer then pays his purchase in cash, by debit card or credit card directly to the self-service checkout system. The goods are equipped with a machine-readable marking or a machine-readable code. The mark or the code is, for example, a one-dimensional, two-dimensional or other multi-dimensional bar code. This is also called a barcode or barcode.
Die maschinenlesbare Markierung enthält unter anderem den Preis der Ware. Der Kunde legt seine von ihm ausgewählten Waren auf eine Transporteinrichtung, beispielsweise ein Transportband. Zur Erfassung der Markierung an der Ware sind an der Transporteinrichtung eine oder mehrere Abtasteinrichtungen stationär angeordnet. Die Abtasteinrichtung besteht aus mehreren Abtasteinheiten. Jede Abtasteinheit ist mit einer Quelle zum Emittieren optischer Strahlung und mit einem Detektor zum Empfangen der von den auf der Transporteinrichtung liegenden Waren reflektierten Strahlung ausgestattet. Typischerweise handelt es sich bei der optischem Strahlung um Licht des sichtbaren Wellenlängenbereichs oder des infraroten Wellenlängenbereichs. DieThe machine-readable mark contains, inter alia, the price of the goods. The customer places his goods selected by him on a transport device, such as a conveyor belt. To detect the marking on the goods, one or more scanning devices are arranged stationary on the transport device. The scanner consists of several scanning units. Each scanning unit is equipped with a source for emitting optical radiation and with a detector for receiving the radiation reflected by the goods lying on the transport means. Typically, the optical radiation is light of the visible wavelength range or the infrared wavelength range. The
Abtasteinheit erzeugt mittels Musterformspiegeln ein Abtastmuster, das auf den abgetasteten Waren abgebildet wird und von den Waren reflektiert wird. Die Abtasteinheit erzeugt ferner ein Signal entsprechend der reflektierten Strahlung. Derartige Abtasteinheiten werden auch als Barcodelesegerät oder als Scanner bezeichnet. Häufig handelt es sich um so genannte Laserscannermodule. Sie übertragen die optisch abgetastete maschinenlesbare Markierung in elektrische Signale, die in digitaler Form als Eingangsgröße in eine Datenverarbeitungseinheit eines Selbstbedienungskassensystems eingegeben werden.Scanning unit generates a scanning pattern by means of pattern forming mirrors, which is imaged on the scanned goods and is reflected by the goods. The The scanning unit also generates a signal corresponding to the reflected radiation. Such scanning units are also called bar code readers or scanners. Often these are so-called laser scanner modules. They transmit the optically scanned machine readable mark into electrical signals which are input in digital form as an input to a data processing unit of a self-service cash register system.
Die Abtasteinheiten besitzen typischerweise ein Sichtfeld, das um eine optische Achse und Sichtlinie zentriert ist. Abtasteinrichtungen für bediente Kassen, welche mit einem Kassierer ausgestattet sind, weisen lediglich einzelneThe scanning units typically have a field of view centered about an optical axis and line of sight. Scanning devices for operated cash registers, which are equipped with a cashier, have only individual
Zielachsen oder Sichtfelder auf. Sie erfordern daher ein genaues Positionieren der Waren im Bezug auf die Abtasteinrichtung, so dass die maschinenlesbare Markierung oder der Code in Richtung der Abtasteinheit ausgerichtet ist. Die meisten Waren sind nur an einer Stelle mit einer Markierung ausgestattet. Derartige Abtasteinrichtungen sind bei Selbstbedienungskassensystemen, die nicht mit einem Kassierer ausgestattet sind, und bei denen die auf einer Transporteinrichtung liegenden Waren automatisch abgetastet werden, nicht möglich, da der Kunde in der Regel nicht darauf achtet, die Waren derart auf die Transporteinrichtung zu legen, dass die Markierung auf der Ware in Richtung der Abtasteinrichtung weist. Besonders schwierig ist das Abtasten derTarget axes or fields of view. They therefore require a precise positioning of the goods with respect to the scanning device, so that the machine-readable mark or the code is aligned in the direction of the scanning unit. Most goods are only marked with a mark in one place. Such scanners are not possible in self-service checkout systems that are not equipped with a cashier, and in which the goods lying on a transport device are automatically scanned, since the customer usually does not pay attention to place the goods on the transport device such that the marking on the goods points in the direction of the scanning device. Particularly difficult is the scanning of the
Markierung auf unregelmäßig geformten Waren oder Verpackungen von Waren, wie beispielsweise Tüten mit Bonbons oder Nudeln.Marking on irregularly shaped goods or packaging of goods, such as bags of candy or pasta.
Vorrichtungen zur Erfassung der Waren an einem Selbstbedienungskassensys- tem sind daher üblicherweise mit Abtasteinrichtungen mit mehrerenDevices for detecting the goods on a self-service checkout system are therefore usually provided with multiple scanning devices
Abtasteinheiten ausgestattet, welche an verschiedenen Positionen an und oberhalb der Transporteinrichtung angeordnet sind. Derartige Vorrichtungen werden auch als Tunnelscanner bezeichnet. Die einzelnen Abtasteinheiten sind in diesem Fall entlang eines sich über die Transporteinrichtung spannenden Torbogens ortsfest angeordnet. Die auf der Transporteinrichtung liegendenScanning units equipped, which are arranged at different positions on and above the transport device. Such devices are also referred to as tunnel scanners. The individual scanning units are in this case arranged in a stationary manner over an archway that is exciting over the transport device. The lying on the transport device
Waren werden an den Abtasteinheiten vorbei transportiert. Dabei erfassen dieGoods are transported past the scanning units. In doing so, they record
Abtasteinheiten die Oberflächen der Waren unter verschiedenen Richtungen. AIs nachteilig erweist sich bei derartigen Vorrichtungen, dass eine Vielzahl von Abtasteinheiten notwendig ist, um in zuverlässiger Weise die maschinenlesbare Markierung der Ware zu erfassen.Scanning units the surfaces of the goods under different directions. AIs disadvantageous in such devices proves that a plurality of scanning units is necessary to reliably detect the machine-readable marking of the goods.
Der vorliegenden Erfindung liegt die Aufgabe zu Grunde, eine Vorrichtung zurThe present invention is based on the object, a device for
Erfassung der Waren an einem Selbstbedienungskassensystem zur Verfügung zu stellen, die preiswert herzustellen ist und in zuverlässiger Weise die maschinenlesbare Markierung oder den Code einer Ware unabhängig von ihrer Ausrichtung auf einer Transporteinrichtung erfasst.Provision of goods to provide a self-service cashier system that is inexpensive to manufacture and reliably detects the machine-readable mark or the code of a product regardless of their orientation on a transport device.
Die erfindungsgemäße Vorrichtung mit den Merkmalen des Anspruchs 1 zeichnet sich dadurch aus, dass zwischen oder neben den mehreren Abtasteinheiten seitlich von und/ oder oberhalb der Transporteinrichtung Spiegel angeordnet sind. Trifft die von den Quellen der Abtasteinheiten emittierte und durch die Oberflächen der Ware reflektierte optische Strahlung nicht auf einem Detektor einer der Abtasteinheiten sondern auf einen Spiegel, so wird sie von diesem in Richtung eines Detektors reflektiert. Selbst bei einer geringen Anzahl an Abtasteinheiten wird nahezu die gesamte, von der Oberfläche der Waren reflektierte optische Strahlung den Detektoren der Abtasteinheiten zugeführt. Die maschinenlesbaren Markierungen der Waren werden damit in zuverlässiger Weise erfasst. Da hierzu nicht die Anzahl der Abtasteinheiten erhöht wird sondern lediglich mehrere Spiegel eingesetzt werden, ist die erfindungsgemäße Vorrichtung kostengünstig herzustellen.The device according to the invention with the features of claim 1 is characterized in that are arranged between or next to the plurality of scanning units laterally from and / or above the transport means mirrors. If the optical radiation emitted by the sources of the scanning units and reflected by the surfaces of the product does not impinge on a detector of one of the scanning units but on a mirror, then it is reflected by it in the direction of a detector. Even with a small number of scanning units, almost all of the optical radiation reflected from the surface of the goods is fed to the detectors of the scanning units. The machine-readable markings of the goods are thus detected in a reliable manner. Since this does not increase the number of scanning units but only a plurality of mirrors are used, the device according to the invention is inexpensive to manufacture.
Durch den Einsatz der Spiegel wird die Zuverlässigkeit, mit der dieBy using the mirrors, the reliability with which the
Markierungen an den Waren erfasst werden, erhöht. Ziel ist es hierbei, die Waren mit einer Wahrscheinlichkeit von 100% oder nahezu 100% zu erfassen und gleichzeitig die Geschwindigkeit des Vorgangs des Erfassens zu erhöhen. Die Zuverlässigkeit oder Wahrscheinlichkeit wird auch als Abtastrate, Leserate oder Scanrate bezeichnet. Mit der erfindungsgemäßen Vorrichtung kann eineMarkings on the goods are collected increased. The goal here is to capture the goods with a probability of 100% or nearly 100%, while increasing the speed of the acquisition process. The reliability or probability is also referred to as the sampling rate, read rate or scan rate. With the device according to the invention can a
Abtastrate von mehr als 99,0% erreicht werden. - A -Sample rate of more than 99.0% can be achieved. - A -
Nach einer weiteren vorteilhaften Ausgestaltung der Erfindung ist die Vorrichtung mit einem Gehäuse für die Abtasteinrichtung ausgestattet. Die Abtasteinheiten und die Spiegel sind in dem Gehäuse angeordnet. Auf diese Weise werden die Abtasteinheiten und die Spiegel vor Beschädigungen geschützt. Ferner können sie durch Kunden nicht manipuliert werden.According to a further advantageous embodiment of the invention, the device is equipped with a housing for the scanning device. The scanning units and the mirrors are arranged in the housing. In this way, the scanning units and the mirrors are protected from damage. Furthermore, they can not be manipulated by customers.
Nach einer weiteren vorteilhaften Ausgestaltung der Erfindung ist das Gehäuse seitlich und oberhalb der Transporteinrichtung angeordnet und umgibt einen Abschnitt der Transporteinrichtung nach Art eines Torbogens. Die auf der Transporteinrichtung liegende Ware wird durch die Öffnung des torbogenartigenAccording to a further advantageous embodiment of the invention, the housing is arranged laterally and above the transport device and surrounds a portion of the transport device in the manner of an archway. The product lying on the transport device is through the opening of the archway-like
Gehäuses transportiert. Die Öffnung des Torbogens und damit des Gehäuses ist dabei so groß, dass auch große, auf der Transporteinrichtung liegende Waren durch das Gehäuse der Abtasteinrichtung hindurchgeführt werden können. Das Gehäuse erstreckt sich ferner in Transportrichtung der Transporteinrichtung über einen Abschnitt entlang der Transporteinrichtung und weist in dieser Richtung eine Länge auf. Auf diese Weise können auch mehrere Abtasteinheiten in Transportrichtung in dem Gehäuse nebeneinander angeordnet sein. Ferner können in Transportrichtung Abtasteinheiten und Spiegel in dem Gehäuse nebeneinander angeordnet sein. Durch die Größe des Gehäuses wird der Abstand zwischen den in dem Gehäuse angeordnetenHousing transported. The opening of the archway and thus the housing is so large that even large, lying on the transport goods can be passed through the housing of the scanner. The housing further extends in the transport direction of the transport device over a portion along the transport device and has a length in this direction. In this way, several scanning units in the transport direction in the housing can be arranged side by side. Furthermore, scanning units and mirrors can be arranged in the housing side by side in the transport direction. Due to the size of the housing, the distance between the arranged in the housing
Abtasteinheiten einerseits und der Transporteinrichtung andererseits vorgegeben.Scanning units on the one hand and the transport device on the other hand given.
Nach einer vorteilhaften Ausgestaltung der Erfindung sind in dem Gehäuse insgesamt vier Abtasteinheiten angeordnet: eine oberhalb des Transportbandes, eine rechts des Transportbandes, eine links des Transportbandes, und eine unterhalb der durch das Transportband vorgegebenen Warentransport- ebene. Die zusätzlichen Spiegel sind in Transportrichtung jeweils vor und hinter den Abtasteinheiten angeordnet. Darüber hinaus können die Abtasteinheiten auch nur an zwei Seiten des Gehäuses angeordnet sein. Die beiden anderenAccording to an advantageous embodiment of the invention, a total of four scanning units are arranged in the housing: one above the conveyor belt, one right of the conveyor belt, one left of the conveyor belt, and one below the predetermined by the conveyor belt goods transport plane. The additional mirrors are arranged in front of and behind the scanning units in the transport direction. In addition, the scanning units can also be arranged only on two sides of the housing. The two others
Seiten des Gehäuses sind in diesem Fall mit Spiegeln ausgestattet. Nach einer weiteren vorteilhaften Ausgestaltung der Erfindung umspannen das Gehäuse der Abtasteinrichtung und die Transporteinrichtung einen Raum, der sich oberhalb der Transporteinrichtung nach außen wölbt. Das Gehäuse ist zumindest in einem nach oben weisenden Abschnitt rund ausgebildet.The sides of the case are equipped with mirrors in this case. According to a further advantageous embodiment of the invention, the housing of the scanning device and the transport device span a space that bulges outwardly above the transport device. The housing is round at least in an upwardly facing portion.
Nach einer weiteren vorteilhaften Ausgestaltung der Erfindung umspannen das Gehäuse und die Transporteinrichtung einen Raum, der senkrecht zur Transportrichtung der Transporteinrichtung einen eckigen Querschnitt aufweist. In diesem Fall besteht das Gehäuse beispielsweise aus zwei seitlichen Abschnitten, die senkrecht zu der Transporteinrichtung angeordnet sind, und einem oder mehreren Abschnitten oberhalb der Transporteinrichtung. Die Abschnitten oberhalb der Transporteinrichtung können dabei parallel zu der Transporteinrichtung oder unter einem Winkel zu der durch die Transporteinrichtung gebildeten Ebene verlaufen.According to a further advantageous embodiment of the invention, the housing and the transport device span a space perpendicular to the transport direction of the transport device has a polygonal cross-section. In this case, the housing consists for example of two lateral sections, which are arranged perpendicular to the transport device, and one or more sections above the transport device. The sections above the transport device can thereby run parallel to the transport device or at an angle to the plane formed by the transport device.
Nach einer weiteren vorteilhaften Ausgestaltung der Erfindung sind die Spiegel auf drehbaren Antriebswellen befestigt, die durch mindestens eine Antriebseinheit angetrieben werden. Dadurch wird die Wahrscheinlichkeit erhöht, dass die von den Waren reflektierten Strahlen durch die Spiegel auf eine Abtasteinrichtung umgelenkt werden.According to a further advantageous embodiment of the invention, the mirrors are mounted on rotatable drive shafts, which are driven by at least one drive unit. This increases the likelihood that the rays reflected from the goods will be redirected by the mirrors to a scanning device.
Weitere Vorteile und vorteilhafte Ausgestaltungen der Erfindung sind den Ansprüchen zu entnehmen.Further advantages and advantageous embodiments of the invention can be found in the claims.
In der Zeichnung ist ein Ausführungsbeispiel einer erfindungsgemäßenIn the drawing, an embodiment of an inventive
Vorrichtung dargestellt. Es zeigt:Device shown. It shows:
Figur 1 Vorrichtung zur Erfassung der Waren an einem Selbstbedienungskassensystem in perspektivischer Ansicht.1 device for detecting the goods on a self-service cash system in perspective view.
Figur 1 zeigt eine Vorrichtung zur Erfassung der Waren an einem Selbstbedienungskassensystem mit einem Transportband 1 , insgesamt vier Abtasteinhei- ten 2 und acht Spiegeln 3. Die vier Abtasteinheiten 2 bilden eine Abtasteinrichtung. Die Abtasteinheiten 2 und die Spiegel 3 sind in einem Gehäuse 4 angeordnet. An der dem Transportband zugewandten Seite des Gehäuses sind die Abtasteinheiten 2 und die Spiegel 3 durch eine Glasplatte 5 abgedeckt, die für das von einer Quelle der Abtasteinheiten 2 emittierten Strahlung eine hoheFIG. 1 shows a device for detecting the goods on a self-service check system with a conveyor belt 1, a total of four scanning units. 2 and 8 mirrors 3. The four scanning units 2 form a scanning device. The scanning units 2 and the mirrors 3 are arranged in a housing 4. At the side of the housing facing the conveyor belt, the scanning units 2 and the mirrors 3 are covered by a glass plate 5, which has a high intensity for the radiation emitted by a source of the scanning units 2
Transmission aufweist. Die Quellen der Abtasteinheiten sind in der Zeichnung nicht dargestellt. Durch die durchsichtige Glasplatte 5 sind die Abtasteinheiten 2 und die Spiegel 3 sichtbar.Transmission has. The sources of the scanning units are not shown in the drawing. Through the transparent glass plate 5, the scanning units 2 and the mirror 3 are visible.
In der Zeichnung sind nur an zwei Seiten des Gehäuses 4 die Abtasteinheiten 2 und die Spiegel 3 erkennbar. An den anderen beiden Seiten sind sie in der Darstellung durch das Gehäuse verdeckt. Die Abtasteinheiten 2 erstrecken sich über die gesamte Breite des Gehäuses senkrecht zur Transportrichtung des Transportbandes 1.In the drawing, only on two sides of the housing 4, the scanning units 2 and the mirror 3 can be seen. On the other two sides they are hidden in the representation by the housing. The scanning units 2 extend over the entire width of the housing perpendicular to the transport direction of the conveyor belt first
Das Transportband 1 besteht aus zwei Abschnitten. Eine erster Abschnitt befindet sich um Vordergrund von Figur 1 und führt die Waren bis an das Gehäuse der Abtasteinheiten 2 und der Spiegel 3. Ein zweiter Abschnitt befindet sich im Hintergrund von Figur 1. Er führt die Waren nach dem Abtasten weiteren Stationen zu.The conveyor belt 1 consists of two sections. A first section is at the foreground of Figure 1 and leads the goods up to the housing of the scanning units 2 and the mirror 3. A second section is located in the background of Figure 1. It supplies the goods to other stations after scanning.
Die Vorrichtung gemäß Figur 1 wird auch als Tunnelscanner bezeichnet, da die auf dem Transportband liegenden Waren wie in einem Tunnel an den Abtasteinheiten vorbeigeführt.The device according to FIG. 1 is also referred to as a tunnel scanner, since the goods lying on the conveyor belt pass by the scanning units as in a tunnel.
Sämtliche Merkmale der Erfindung können sowohl einzeln als auch in beliebiger Kombination miteinander erfindungswesentlich sein. BezugszeichenAll features of the invention may be essential to the invention both individually and in any combination with each other. reference numeral
1 Transportband / Transporteinrichtung1 conveyor belt / transport device
2 Abtasteinheit2 scanning unit
3 Spiegel3 mirrors
4 Gehäuse4 housing
5 Glasplatte 5 glass plate

Claims

Ansprüche claims
1. Vorrichtung zur Erfassung der Waren an einem Selbstbedienungskas- sensystem mit einer Transporteinrichtung (1) zum Transport der Waren, mit einer ortsfest an der Transporteinrichtung (1) angeordneten Abtasteinrichtung zum Erfassen von maschinenlesbaren Codes, mit welchen die Waren ausgestattet sind, mit mehreren Abtasteinheiten (2) der Abtasteinrichtung, welche mit einer1. A device for detecting the goods on a Selbstbedienungskas- sensens system with a transport device (1) for transporting goods, with a stationary on the transport means (1) arranged scanning device for detecting machine-readable codes, which are equipped with the goods, with a plurality of scanning units (2) the scanner, which with a
Quelle zum Emittierten optischer Strahlung in Richtung der Transporteinrichtung (1) und mit einem Detektor zum Empfangen der von den auf der Transporteinrichtung (1) liegenden Waren reflektierten Strahlung und zum Erzeugen eines Signals entsprechend der Intensität der reflektierten Strahlung ausgestattet sind, mit einer Anordnung der Abtasteinheiten (2) an verschiedenen Positionen seitlich von und/ oder oberhalb der Transporteinrichtung (1) zum Abtasten der Waren in mehreren Richtungen, mit mehreren zwischen den Abtasteinheiten (2) und/ oder neben den Abtasteinheiten (2) angeordneten Spiegeln (3).A source for emitting optical radiation in the direction of the transport device (1) and equipped with a detector for receiving the radiation reflected by the goods lying on the transport device (1) and for generating a signal corresponding to the intensity of the reflected radiation, with an arrangement of the scanning units (2) at different positions laterally of and / or above the transport means (1) for scanning the goods in multiple directions, with a plurality of mirrors (3) arranged between the scanning units (2) and / or adjacent to the scanning units (2).
2. Vorrichtung nach Anspruch 1 , dadurch gekennzeichnet, dass sie mit einem Gehäuse (4) für die Abtasteinrichtung ausgestattet ist und dass die Abtasteinheiten (2) und die Spiegel (3) in dem Gehäuse (4) angeord- net sind.2. Apparatus according to claim 1, characterized in that it is equipped with a housing (4) for the scanning device and that the scanning units (2) and the mirrors (3) in the housing (4) are arranged net.
3. Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, dass das Gehäuse (4) seitlich und oberhalb der Transporteinrichtung (1) angeordnet ist und einen Abschnitt der Transporteinrichtung (1) nach Art eines Torbogens umgibt. 3. Apparatus according to claim 2, characterized in that the housing (4) is arranged laterally and above the transport device (1) and surrounds a portion of the transport device (1) in the manner of an archway.
4. Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, dass das4. Apparatus according to claim 3, characterized in that the
Gehäuse (4) und die Transporteinrichtung (1) einen Raum umspannen, der sich oberhalb der Transporteinrichtung (1) nach außen wölbt.Housing (4) and the transport device (1) span a space that bulges above the transport device (1) to the outside.
5. Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, dass das5. Apparatus according to claim 3, characterized in that the
Gehäuse (4) und die Transporteinrichtung (1) einen Raum umspannen, der senkrecht zur Transportrichtung der Transporteinrichtung (1) einen eckigen Querschnitt aufweist.Housing (4) and the transport device (1) span a space perpendicular to the transport direction of the transport device (1) has a polygonal cross-section.
6. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass sie mit mindestens einer Antriebseinrichtung aufgestattet ist, dass die Spiegel (3) auf drehbaren Antriebswellen befestigt sind, und dass die Antriebswellen von der Antriebseinrichtung angetrieben sind. 6. Device according to one of the preceding claims, characterized in that it is equipped with at least one drive means, that the mirrors (3) are mounted on rotatable drive shafts, and that the drive shafts are driven by the drive means.
PCT/EP2009/000684 2008-02-23 2009-02-03 Goods detection in self-checkout systems WO2009103411A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP09713585A EP2248116A1 (en) 2008-02-23 2009-02-03 Goods detection in self-checkout systems

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DE200810010905 DE102008010905A1 (en) 2008-02-23 2008-02-23 Goods acquisition at self-service checkout systems
DE102008010905.3 2008-02-23

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DE102008010905A1 (en) 2009-08-27

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