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EP1576553A2 - Method and device for the checking of banknotes - Google Patents

Method and device for the checking of banknotes

Info

Publication number
EP1576553A2
EP1576553A2 EP03813130A EP03813130A EP1576553A2 EP 1576553 A2 EP1576553 A2 EP 1576553A2 EP 03813130 A EP03813130 A EP 03813130A EP 03813130 A EP03813130 A EP 03813130A EP 1576553 A2 EP1576553 A2 EP 1576553A2
Authority
EP
European Patent Office
Prior art keywords
data
banknote
checked
property
banknotes
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.)
Granted
Application number
EP03813130A
Other languages
German (de)
French (fr)
Other versions
EP1576553B1 (en
Inventor
Hendrik Derks
Matthias Hecht
Norbert Holl
Nikolai Lipkowitsch
Dieter Stein
Holger Trumpfheller
Bernd Wunderer
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.)
Giesecke and Devrient GmbH
Original Assignee
Giesecke and Devrient 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 Giesecke and Devrient GmbH filed Critical Giesecke and Devrient GmbH
Publication of EP1576553A2 publication Critical patent/EP1576553A2/en
Application granted granted Critical
Publication of EP1576553B1 publication Critical patent/EP1576553B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
    • G07D7/00—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency
    • G07D7/181—Testing mechanical properties or condition, e.g. wear or tear
    • G07D7/185—Detecting holes or pores
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
    • G07D7/00—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency
    • G07D7/06—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency using wave or particle radiation
    • G07D7/08—Acoustic waves
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
    • G07D7/00—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency
    • G07D7/06—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency using wave or particle radiation
    • G07D7/12—Visible light, infrared or ultraviolet radiation
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
    • G07D7/00—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency
    • G07D7/181—Testing mechanical properties or condition, e.g. wear or tear
    • G07D7/183—Detecting folds or doubles
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
    • G07D7/00—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency
    • G07D7/181—Testing mechanical properties or condition, e.g. wear or tear
    • G07D7/187—Detecting defacement or contamination, e.g. dirt

Definitions

  • the present invention relates to a method and a device for checking banknotes, in which data from at least two different measurements of the banknotes to be checked are evaluated.
  • the checking of banknotes is usually carried out by means of sensors which record data which represent certain banknote properties.
  • the data from each sensor is usually evaluated independently of the data from the other sensors.
  • the invention is based on a check of banknotes in which data from at least two different measurements of the banknotes to be checked are evaluated, a first property of the banknote to be checked being derived from the data of at least one first measurement, at least a second one Property of the banknote to be checked is derived from the data of at least one second measurement, a correlation between the first and at least second property is determined for the same locations of the banknote to be checked, and the first property is derived again, at locations of the banknote to be checked for a correlation between the first and at least second properties has been determined, a modified derivation of the first property is carried out from the data of the at least first measurement.
  • correlation is not only to be understood to mean the formation of a correlation function, but any local or non-local arithmetic or logical combination of data or properties derived from the data.
  • the invention thus has the particular advantage that, due to the changed derivation, disruptive information can be suppressed in the data evaluated for checking the banknote, which improves the quality and plausibility of the check.
  • This also makes it possible for features and / or properties of the Checking banknotes can be evaluated safely, whereas problems occur with only one measurement or with two isolated measurements of the features and / or properties, e.g. B. because the recorded characteristics and / or properties are not unique.
  • Figure 1 is a schematic representation of a basic structure of a device for checking banknotes
  • Figure 2 is a schematic representation of a check of a banknote.
  • Figure 1 shows a schematic representation of a basic structure of a device 10 for checking banknotes.
  • the device 10 for the check is designed as a banknote processing machine and has an input compartment 20 for the input of banknotes 21 to be processed, in which a separator 22 engages.
  • the separator 22 detects one of the banknotes 21 to be processed and transfers the individual banknote to a transport system 23, which transports the individual banknote through a sensor arrangement 30.
  • At least two different sensors 31, 32, 33 are present in the sensor arrangement 30, for example a first optical sensor 31, which detects light reflected by the banknote, a second acoustic sensor 33, which is detected by the ultrasound signals originating from the banknote, in particular transmitted, and a third optical sensor 32 which detects light transmitted by the banknote.
  • the sensors 31, 32, 33 carry out a measurement for checking the bank notes, in which they record the features and / or properties of each individual bank note and generate corresponding data.
  • the sensors 31, 32, 33 detect the banknotes with a certain resolution, from which a pixel size results, with which the banknotes are scanned and detected.
  • the sensors 31, 32, 33 and / or a control device 35 form data from the captured pixels of each of the bank notes, which data represent each location on the surface of the respective bank note.
  • the generation of the data by the sensors 31, 32, 33 can, for. B. for one side of the banknotes, d. H. for one of the surfaces of the banknotes, both surfaces can also be detected and corresponding data made available.
  • the pages or surfaces of the banknotes are preferably completely recorded and corresponding data is generated for the complete page or surface.
  • Properties which are relevant for checking the bank notes are derived from the data from the sensors 31, 32, 33. These properties can concern, for example, the authenticity, the type (currency, denomination), the condition (damage, soiling), etc. of the respective banknote.
  • the respective properties can be derived, for example, from the data of one or more of the sensors 31, 32, 33.
  • control device 35 the data from the sensors 31, 32, 33 are compared with reference data stored in the control device 35, which identify real or counterfeit and / or suspect counterfeits Banknotes that allow the type of banknotes, the condition of the banknotes, etc.
  • switches 24, 26 arranged in the transport system 23 are actuated, e.g. B. to store banknotes in good condition in an output compartment 25, whereas banknotes with poor condition can be stored in an output compartment 27 or a further processing 28 can be fed via the transport system 23.
  • FIG. 1 A check of a banknote is shown schematically in FIG. 1
  • a first property of the banknote is to be determined, e.g. B. the state of the banknote with regard to the degree of contamination of the banknote. Soiling should be understood to mean, in particular, spots, illegally added inscriptions, etc.
  • the control device 35 uses the data from the first optical sensor 31, which, for. B. detected by the banknote reflected light of a certain wavelength, derived the areas or locations of the surface of the banknote, the data of which indicate that there is contamination.
  • the areas or locations of contamination by dark areas are identified in a representation 131 representing the banknote.
  • At least one second property of the banknote is determined, e.g. B. the state of the banknote with regard to the degree of damage or destruction of the banknote. Under damage or destruction In particular, holes, tears, missing parts, dog-ears, adhesive strips, etc. should be understood.
  • control device 35 uses the data from the second optical sensor 32, which, for. B. detected by the banknote transmitted light of a certain wavelength, derived the areas or locations of the surface of the Ban knot, the data of which indicate that there is damage or destruction. 2 shows the areas or locations of damage or destruction by black areas 1 to 4 in a representation 132 representing the banknote.
  • the area 1 indicates a hole in the banknote
  • the areas 2 and 3 indicate cracks in the banknote
  • the areas 4 indicate defects or dog ears.
  • the data of the third acoustic sensor 33 can be used to check or confirm the second property of the banknote (here: damage or destruction) derived from the data of the second optical sensor 32.
  • the data of the acoustic sensor 33 can also be evaluated by the control device 35 in various ways.
  • the data of the acoustic sensor 33 which detects transmitted ultrasound, for example, is examined for locations with a high signal strength, the locations of the bank note with holes V, cracks 2 'and defects 4' can be shown in a representation 133 the control device 35 are derived.
  • a step 40 for checking or confirming the derived holes, cracks and imperfections, the previously (representations 132 and 133) middle holes 1, 1 ', cracks 2, 3, 2' and missing parts 4, A! compared, as shown in an illustration 41. It is determined, for example, that the crack 3 determined by the optical sensor 32 was not also determined by the acoustic sensor 33.
  • a representation 42 is therefore determined by the control device 35, in which only the hole 1, the crack 2 and the defects 4 are contained.
  • the information about donkey ears 5 and adhesive strips 6 are combined in a further step 50 with the hole 1, the tear 2 and the missing parts 4 by the control device 35 to form a representation 51 which contains all detected and checked damage or destruction of the bank note.
  • a mask 61 is formed by the control device 35, which contains the spatial distribution of the damage or destruction 1, 2, 4, 5, 6, ie the locations or locations of the banknote to be checked with the corresponding damage or destruction .
  • the mask 61 is placed by the control device 35 over the areas or locations of the soiling of the banknote which were derived from the data of the first sensor 31 when the first property of the banknote to be checked was derived and in the representation 131 are shown. This results in a representation 71, from which the spatial or local correlation of the first property (contamination) with the second property (damage or destruction) emerges.
  • the first characteristic characterizing the soiling is again derived by the control device 35 from the data (dark spots in illustration 131) of the first sensor 31, the derivation from the data being changed.
  • the control device 35 can then make an assessment in order to check the banknote. B. as dirty, little dirty or not dirty to classify dirty. This classification can be used for a decision whether the banknote e.g. B. is still fit for circulation.
  • the data of the optical sensor 31, which correlate locally with the at least second property are processed analogously, e.g. B. by means of a linear combination.
  • methods of fuzzy logic can be used alternatively or additionally for the changed derivation.
  • the data from the optical sensor 31 can alternatively or additionally also be linked to data from other sensors, wherein data are always linked which relate to the same location of the bank note to be examined in each case.
  • the described correlation of the various data can thus achieve that the result of the checking of the banknotes is generally improved. This is achieved - as described - in that in all cases of inaccuracy or uncertainty when making a decision about the condition, the authenticity, the type of the banknote etc. instead of solely on the basis of data from a sensor, by linking data with one or more other sensors is achieved that the quality of the assessment made increases. This also makes annoying manual rework unnecessary. H. Operator assessments of banknotes. In this way, by using the method and the device according to the invention, the rejection rate of banknotes during processing with a banknote processing machine can be considerably reduced, whereby the reworking is correspondingly reduced and the throughput of banknotes to be achieved is increased.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Acoustics & Sound (AREA)
  • Inspection Of Paper Currency And Valuable Securities (AREA)

Abstract

The invention relates to a method and a device for the checking of banknotes, whereby data from at least two different measurements of the banknotes for checking are analysed. The invention is based on a checking of banknotes, in which data from at least two different measurements of the banknotes for checking are analysed, in which a first property of the banknote for checking is derived from the data from at least one first measurement, at least one second property of the banknote for checking is derived from the data from at least one second measurement, a correlation between the first and second property for the same positions on the banknote for checking is determined and the first property again derived, whereby, in positions of the banknote for checking for which a correlation between the first property and at least the second property is determined, an altered derivation of the first property from the data of the at least first measurement is carried out.

Description

Verfahren und Vorrichtung für die Überprüfung von Banknoten Method and device for checking banknotes
Die vorliegende Erfindung betrifft ein Verfahren und eine Vorrichtung für die Überprüfung von Banknoten, bei denen Daten aus mindestens zwei unterschiedlichen Messungen der zu überprüfenden Banknoten ausgewertet werden.The present invention relates to a method and a device for checking banknotes, in which data from at least two different measurements of the banknotes to be checked are evaluated.
Die Überprüfung von Banknoten wird üblicherweise mittels Sensoren durchgeführt, die Daten erfassen, welche bestimmte Banknoteneigenschaften repräsentieren. Die Daten jedes Sensors werden dabei in der Regel unabhängig von den Daten der andere Sensoren ausgewertet.The checking of banknotes is usually carried out by means of sensors which record data which represent certain banknote properties. The data from each sensor is usually evaluated independently of the data from the other sensors.
Aus der EP 1 172773 AI ist eine Vorrichtung und ein Verfahren zur Überprüfung der Echtheit von Dokumenten bekannt, bei denen die Daten eines optischen Sensors dazu verwendet werden, die Lage eines magnetischen Sicherheitsfadens zu ermitteln. Die vom optischen Sensor ermittelte Lage des Sicherheitsfadens wird dazu verwendet, einen magnetischen Sensor gezielt anzusteuern, damit dieser genau an der Position des Sicherheitsfaden die im Sicherheitsfaden enthaltene Codierung auslesen kann.From EP 1 172773 AI an apparatus and a method for checking the authenticity of documents is known, in which the data of an optical sensor are used to determine the position of a magnetic security thread. The position of the security thread determined by the optical sensor is used to specifically control a magnetic sensor so that it can read out the coding contained in the security thread precisely at the position of the security thread.
Die bekannten Verfahren und Vorrichtungen für die Überprüfung von Banknoten, machen jedoch keinerlei Aussagen, wie die Überprüfung von Banknoten mittels mindestens zwei verschiedenen Messungen der zu überprüfenden Banknoten verbessert werden kann, falls mindestens eine der verschiedenen Messungen Informationen oder Daten enthält, die zu einer fehlerhaften Überprüfung führen können.The known methods and devices for checking banknotes, however, do not make any statements as to how the checking of banknotes can be improved by means of at least two different measurements of the banknotes to be checked, if at least one of the different measurements contains information or data that lead to an incorrect check being able to lead.
Es ist deshalb Aufgabe der vorliegenden Erfindung, ein Verfahren und eine Vorrichtung für die Überprüfung von Banknoten anzugeben, bei denen Daten aus mindestens zwei unterschiedlichen Messungen der zu überprüfen- den Banknoten ausgewertet werden, wobei eine fehlerhafte Überprüfung auf der Grundlage der Auswertung der Daten der mindestens zwei unterschiedlichen Messungen vermieden wird.It is therefore an object of the present invention to provide a method and a device for checking banknotes in which data from at least two different measurements of the the banknotes are evaluated, an incorrect check on the basis of the evaluation of the data of the at least two different measurements being avoided.
Diese Aufgabe wird erfindungsgemäß durch die Merkmale der Ansprüche 1 und 9 gelöst.According to the invention, this object is achieved by the features of claims 1 and 9.
Die Erfindung geht dabei von einer Überprüfung von Banknoten, bei der Daten aus mindestens zwei unterschiedlichen Messungen der zu überprü- fenden Banknoten ausgewertet werden, aus, wobei eine erste Eigenschaft der zu überprüfenden Banknote aus den Daten mindestens einer ersten Messung abgeleitet wird, mindestens eine zweite Eigenschaft der zu überprüfenden Banknote aus den Daten mindestens einer zweiten Messung abgeleitet wird, eine Korrelation zwischen erster und mindestens zweiter Eigenschaft für gleiche Orte der zu überprüfenden Banknote ermittelt wird, und die erste Eigenschaft erneut abgeleitet wird, wobei an Orten der zu überprüfenden Banknote, für die eine Korrelation zwischen erster und mindestens zweiter Eigenschaft ermittelt wurde, eine veränderte Ableitung der ersten Eigenschaft aus den Daten der mindestens ersten Messung vorgenommen wird. Dabei soll im Zusammenhang mit der vorliegenden Erfindung unter Korrelation nicht allein die Bildung einer Korrelationsfunktion verstanden, sondern jede lokale oder nichtlokale arithmetische oder logische Verknüpfung von Daten oder von aus den Daten abgeleiteten Eigenschaften.The invention is based on a check of banknotes in which data from at least two different measurements of the banknotes to be checked are evaluated, a first property of the banknote to be checked being derived from the data of at least one first measurement, at least a second one Property of the banknote to be checked is derived from the data of at least one second measurement, a correlation between the first and at least second property is determined for the same locations of the banknote to be checked, and the first property is derived again, at locations of the banknote to be checked for a correlation between the first and at least second properties has been determined, a modified derivation of the first property is carried out from the data of the at least first measurement. In connection with the present invention, correlation is not only to be understood to mean the formation of a correlation function, but any local or non-local arithmetic or logical combination of data or properties derived from the data.
Die Erfindung weist somit insbesondere den Vorteil auf, daß aufgrund der veränderten Ableitung störende Informationen in den für die Überprüfung der Banknote ausgewerteten Daten unterdrückt werden können, wodurch die Qualität und Plausibilität der Überprüfung verbessert wird. Dadurch wird es auch möglich, daß Merkmale und/ oder Eigenschaften der zu über- prüfenden Banknoten sicher ausgewertet werden können, wohingegen bei nur einer Messung oder bei zwei isolierten Messungen der Merkmale und/ oder Eigenschaften Probleme auftreten, z. B. weil die erfaßten Merkmale und/ oder Eigenschaften nicht eindeutig sind.The invention thus has the particular advantage that, due to the changed derivation, disruptive information can be suppressed in the data evaluated for checking the banknote, which improves the quality and plausibility of the check. This also makes it possible for features and / or properties of the Checking banknotes can be evaluated safely, whereas problems occur with only one measurement or with two isolated measurements of the features and / or properties, e.g. B. because the recorded characteristics and / or properties are not unique.
Weitere Vorteile der vorliegenden Erfindung ergeben sich aus den abhängigen Ansprüchen sowie der nachfolgenden Beschreibung einer Ausführungsform anhand von Figuren.Further advantages of the present invention result from the dependent claims and the following description of an embodiment with reference to figures.
Es zeigt:It shows:
Figur 1 eine schematische Darstellung eines prinzipiellen Aufbaus einer Vorrichtung für die Überprüfung von Banknoten, undFigure 1 is a schematic representation of a basic structure of a device for checking banknotes, and
Figur 2 eine schematische Darstellung einer Überprüfung einer Banknote.Figure 2 is a schematic representation of a check of a banknote.
Figur 1 zeigt eine schematische Darstellung eines prinzipiellen Aufbaus einer Vorrichtung 10 für die Überprüfung von Banknoten.Figure 1 shows a schematic representation of a basic structure of a device 10 for checking banknotes.
Die Vorrichtung 10 für die Überprüfung ist als Banknotenbearbeitungsmaschine ausgebildet und weist ein Eingabefach 20 für die Eingabe von zu bearbeitenden Banknoten 21 auf, in welches ein Vereinzeier 22 eingreift. Der Vereinzeier 22 erfaßt jeweils eine der zu bearbeitenden Banknoten 21 und übergibt die einzelne Banknote einem Transportsystem 23, welches die ein- zelne Banknote durch eine Sensoranordnung 30 transportiert.The device 10 for the check is designed as a banknote processing machine and has an input compartment 20 for the input of banknotes 21 to be processed, in which a separator 22 engages. The separator 22 detects one of the banknotes 21 to be processed and transfers the individual banknote to a transport system 23, which transports the individual banknote through a sensor arrangement 30.
In der Sensoranordnung 30 sind mindestens zwei verschiedene Sensoren 31, 32, 33 vorhanden, beispielsweise ein erster optischer Sensor 31, der von der Banknote reflektiertes Licht erfaßt, ein zweiter akustischer Sensor 33, der von der Banknote stammende, insbesondere transmittierte, Ultraschallsignale erfaßt, und ein dritter optischer Sensor 32, der durch die Banknote transmit- tiertes Licht erfaßt. Die Sensoren 31, 32, 33 führen für die Überprüfung der Banknoten eine Messung durch, bei der sie Merkmale und/ oder Eigenschaf - ten jeder einzelnen Banknote erfassen und entsprechende Daten erzeugen. Dazu erfassen die Sensoren 31, 32, 33 die Banknoten mit einer bestimmten Auflösung, aus der sich eine Bildpunktgröße ergibt, mit der die Banknoten abgetastet und erfaßt werden.At least two different sensors 31, 32, 33 are present in the sensor arrangement 30, for example a first optical sensor 31, which detects light reflected by the banknote, a second acoustic sensor 33, which is detected by the ultrasound signals originating from the banknote, in particular transmitted, and a third optical sensor 32 which detects light transmitted by the banknote. The sensors 31, 32, 33 carry out a measurement for checking the bank notes, in which they record the features and / or properties of each individual bank note and generate corresponding data. For this purpose, the sensors 31, 32, 33 detect the banknotes with a certain resolution, from which a pixel size results, with which the banknotes are scanned and detected.
Aus den erfaßten Bildpunkten jeder der Banknoten werden von den Sensoren 31, 32, 33 und/ oder einer Steuereinrichtung 35 Daten gebildet, welche jeden Ort auf der Oberfläche der jeweiligen Banknote repräsentieren. Die Erzeugung der Daten durch die Sensoren 31, 32, 33 kann z. B. für eine Seite der Banknoten erfolgen, d. h. für eine der Oberflächen der Banknoten, eben- so können beide Oberflächen erfaßt und entsprechende Daten zur Verfügung gestellt werden. Bevorzugt werden die Seiten bzw. Oberflächen der Banknoten jeweils vollständig erfaßt und entsprechende Daten für die vollständige Seite bzw. Oberfläche erzeugt.The sensors 31, 32, 33 and / or a control device 35 form data from the captured pixels of each of the bank notes, which data represent each location on the surface of the respective bank note. The generation of the data by the sensors 31, 32, 33 can, for. B. for one side of the banknotes, d. H. for one of the surfaces of the banknotes, both surfaces can also be detected and corresponding data made available. The pages or surfaces of the banknotes are preferably completely recorded and corresponding data is generated for the complete page or surface.
Aus den Daten der Sensoren 31, 32, 33 werden Eigenschaften abgeleitet, die für die Überprüfung der Banknoten relevant sind. Diese Eigenschaften können beispielsweise die Echtheit, die Art (Währung, Stückelung), den Zustand (Beschädigungen, Verschmutzung) usw. der jeweiligen Banknote betreffen. Die jeweiligen Eigenschaften können beispielsweise aus den Daten eines oder mehrerer der Sensoren 31, 32, 33 abgeleitet werden.Properties which are relevant for checking the bank notes are derived from the data from the sensors 31, 32, 33. These properties can concern, for example, the authenticity, the type (currency, denomination), the condition (damage, soiling), etc. of the respective banknote. The respective properties can be derived, for example, from the data of one or more of the sensors 31, 32, 33.
In der Steuereinrichtung 35 werden die Daten der Sensoren 31, 32, 33 mit in der Steuereinrichtung 35 gespeicherten Referenzdaten verglichen, welche die Erkennung von echten bzw. gefälschten und/ oder fälschungsverdächtigen Banknoten, die Art der Banknoten, den Zustand der Banknoten usw. ermöglichen.In the control device 35, the data from the sensors 31, 32, 33 are compared with reference data stored in the control device 35, which identify real or counterfeit and / or suspect counterfeits Banknotes that allow the type of banknotes, the condition of the banknotes, etc.
Anhand der von der Steuereinrichtung 35 durchgeführten Überprüfung der jeweiligen Banknote werden im Transportsystem 23 angeordnete Weichen 24, 26 angesteuert, z. B. um Banknoten mit gutem Zustand in einem Ausgabefach 25 abzulegen, wohingegen Banknoten mit schlechtem Zustand in einem Ausgabefach 27 abgelegt werden können oder über das Transportsystem 23 einer weiteren Bearbeitung 28 zuführbar sind.On the basis of the check of the respective bank note carried out by the control device 35, switches 24, 26 arranged in the transport system 23 are actuated, e.g. B. to store banknotes in good condition in an output compartment 25, whereas banknotes with poor condition can be stored in an output compartment 27 or a further processing 28 can be fed via the transport system 23.
In Figur 2 ist schematisch eine Überprüfung einer Banknote dargestellt.A check of a banknote is shown schematically in FIG.
Bei der Überprüfung soll eine erste Eigenschaft der Banknote ermittelt werden, z. B. der Zustand der Banknote hinsichtlich des Grads der Verschmut- zung der Banknote. Unter Verschmutzung sollen dabei insbesondere Flek- ken, unzulässigerweise hinzugefügte Beschriftungen usw. verstanden werden.When checking, a first property of the banknote is to be determined, e.g. B. the state of the banknote with regard to the degree of contamination of the banknote. Soiling should be understood to mean, in particular, spots, illegally added inscriptions, etc.
Dazu werden beispielsweise von der Steuereinrichtung 35 aus den Daten des ersten, optischen Sensors 31, der z. B. von der Banknote reflektiertes Licht einer bestimmten Wellenlänge erfaßt, die Bereiche bzw. Orte der Oberfläche der Banknote abgeleitet, deren Daten darauf hinweisen, daß eine Verschmutzung vorliegt. In der Figur 2 sind die Bereiche bzw. Orte der Verschmutzung durch dunkle Flächen in einer die Banknote repräsentierenden Darstellung 131 kenntlich gemacht.For this purpose, for example, the control device 35 uses the data from the first optical sensor 31, which, for. B. detected by the banknote reflected light of a certain wavelength, derived the areas or locations of the surface of the banknote, the data of which indicate that there is contamination. In FIG. 2, the areas or locations of contamination by dark areas are identified in a representation 131 representing the banknote.
Weiterhin wird mindestens eine zweite Eigenschaft der Banknote ermittelt, z. B. der Zustand der Banknote hinsichtlich des Grads von Beschädigungen oder Zerstörungen der Banknote. Unter Beschädigungen oder Zerstörungen sollen dabei insbesondere Löcher, Risse, Fehlstellen, Eselsohren, Klebestreifen usw. verstanden werden.Furthermore, at least one second property of the banknote is determined, e.g. B. the state of the banknote with regard to the degree of damage or destruction of the banknote. Under damage or destruction In particular, holes, tears, missing parts, dog-ears, adhesive strips, etc. should be understood.
Dazu werden beispielsweise von der Steuereinrichtung 35 aus den Daten des zweiten, optischen Sensors 32, der z. B. durch die Banknote transmittiertes Licht einer bestimmten Wellenlänge erfaßt, die Bereiche bzw. Orte der Oberfläche der Ba-nknote abgeleitet, deren Daten darauf hinweisen, daß eine Beschädigung oder Zerstörung vorliegt. In der Figur 2 sind die Bereiche bzw. Orte der Beschädigung oder Zerstörung durch schwarze Flächen 1 bis 4 in einer die Banknote repräsentierenden Darstellung 132 kenntlich gemacht.For this purpose, for example, the control device 35 uses the data from the second optical sensor 32, which, for. B. detected by the banknote transmitted light of a certain wavelength, derived the areas or locations of the surface of the Ban knot, the data of which indicate that there is damage or destruction. 2 shows the areas or locations of damage or destruction by black areas 1 to 4 in a representation 132 representing the banknote.
Die Fläche 1 weist auf ein Loch in der Banknote hin, die Flächen 2 und 3 weisen auf Risse in der Banknote hin und die Flächen 4 weisen auf Fehlstellen oder Eselsohren hin.The area 1 indicates a hole in the banknote, the areas 2 and 3 indicate cracks in the banknote and the areas 4 indicate defects or dog ears.
Zur Überprüfung oder Bestätigung der aus den Daten des zweiten, optischen Sensors 32 abgeleiteten zweiten Eigenschaft der Banknote (hier: Beschädigungen oder Zerstörungen), können die Daten des dritten, akustischen Sensors 33 verwendet werden. Dazu können die Daten des akustischen Sensors 33 von der Steuereinrichtung 35 zusätzlich in verschiedener Weise ausgewertet werden.The data of the third acoustic sensor 33 can be used to check or confirm the second property of the banknote (here: damage or destruction) derived from the data of the second optical sensor 32. For this purpose, the data of the acoustic sensor 33 can also be evaluated by the control device 35 in various ways.
Werden die Daten des akustischen Sensors 33, der beispielsweise transmit- tierten Ultraschall detektiert, auf Stellen mit großer Signalstärke untersucht, können, wie in einer Darstellung 133 gezeigt, die Orte der Banknote mit Lö- ehern V, Rissen 2' und Fehlstellen 4' von der Steuereinrichtung 35 abgeleitet werden.If the data of the acoustic sensor 33, which detects transmitted ultrasound, for example, is examined for locations with a high signal strength, the locations of the bank note with holes V, cracks 2 'and defects 4' can be shown in a representation 133 the control device 35 are derived.
In einem Schritt 40 werden zur Überprüfung oder Bestätigung der abgeleiteten Löcher, Risse und Fehlstellen, die zuvor (Darstellungen 132 und 133) er- mittelten Löcher 1, 1', Risse 2, 3, 2' und Fehlstellen 4, A! verglichen, wie in einer Darstellung 41 gezeigt. Dabei wird beispielsweise festgestellt, daß der von dem optischen Sensor 32 ermittelte Riß 3 nicht auch vom akustischen Sensor 33 ermittelt wurde. In einem nächsten Schritt 45 wird deshalb eine Darstellung 42 von der Steuereinrichtung 35 ermittelt, in welcher nur das Loch 1, der Riß 2 und die Fehlstellen 4 enthalten sind.In a step 40, for checking or confirming the derived holes, cracks and imperfections, the previously (representations 132 and 133) middle holes 1, 1 ', cracks 2, 3, 2' and missing parts 4, A! compared, as shown in an illustration 41. It is determined, for example, that the crack 3 determined by the optical sensor 32 was not also determined by the acoustic sensor 33. In a next step 45, a representation 42 is therefore determined by the control device 35, in which only the hole 1, the crack 2 and the defects 4 are contained.
Aus den Daten des akustischen Sensors 33, der beispielsweise transmittierten Ultraschall detektiert, können weitere Rückschlüsse auf den Zustand der Banknote gezogen werden. Werden die Daten von der Steuereinrichtung 35 auf Stellen untersucht, die nahezu keine Signalstärke aufweisen, können, wie in der Darstellung 133' gezeigt, Orte 5 der Banknote mit erhöhter Dicke bzw. Materialstärke von der Steuereinrichtung 35 abgeleitet werden. Derartige Orte 5 sind beispielsweise ein Hinweis auf das Vorliegen von Eselsohren. Werden die Daten des akustischen Sensors 33 auf Stellen mit abgeschwächter Signalstärke untersucht, können, wie in der Darstellung 133" gezeigt, Orte 6 der Banknote von der Steuereinrichtung 35 abgeleitet werden, die beispielsweise auf das Vorliegen eines Klebestreifens hinweisen.Further conclusions about the state of the banknote can be drawn from the data of the acoustic sensor 33, which detects transmitted ultrasound, for example. If the data is examined by the control device 35 for locations that have almost no signal strength, locations 5 of the bank note with increased thickness or material thickness can be derived from the control device 35, as shown in the illustration 133 ′. Such locations 5 are, for example, an indication of the presence of dog ears. If the data of the acoustic sensor 33 is examined for points with weakened signal strength, locations 6 of the bank note can be derived from the control device 35, as shown in the illustration 133 ", which indicate, for example, the presence of an adhesive strip.
Die Informationen über Eselsohren 5 und Klebestreifen 6 werden in einem weiteren Schritt 50 mit dem Loch 1, dem Riß 2 und den Fehlstellen 4, von der Steuereinrichtung 35 zu einer Darstellung 51 zusammengefaßt, welche sämtliche festgestellten und überprüften Beschädigungen oder Zerstörungen der Banknote enthält.The information about donkey ears 5 and adhesive strips 6 are combined in a further step 50 with the hole 1, the tear 2 and the missing parts 4 by the control device 35 to form a representation 51 which contains all detected and checked damage or destruction of the bank note.
In einem weiteren Schritt 60 wird eine Maske 61 von der Steuereinrichtung 35 gebildet, welche die räumliche Verteilung der Beschädigungen oder Zerstörungen 1, 2, 4, 5, 6 enthält, d. h. die Stellen bzw. Orte der zu überprüfenden Banknote mit den entsprechenden Beschädigungen oder Zerstörungen. In einem nächsten Schritt 70 wird die Maske 61 von der Steuereinrichtung 35 über die Bereiche bzw. Orte der Verschmutzung der Banknote gelegt, die bei der Ableitung der ersten Eigenschaft der zu überprüfenden Banknote aus den Daten des ersten Sensors 31 abgeleitet wurden und in der Darstellung 131 gezeigt sind. Dabei ergibt sich eine Darstellung 71, aus der die räumliche bzw. örtliche Korrelation der ersten Eigenschaft (Verschmutzung) mit der zweiten Eigenschaft (Beschädigung oder Zerstörung) hervorgeht.In a further step 60, a mask 61 is formed by the control device 35, which contains the spatial distribution of the damage or destruction 1, 2, 4, 5, 6, ie the locations or locations of the banknote to be checked with the corresponding damage or destruction , In a next step 70, the mask 61 is placed by the control device 35 over the areas or locations of the soiling of the banknote which were derived from the data of the first sensor 31 when the first property of the banknote to be checked was derived and in the representation 131 are shown. This results in a representation 71, from which the spatial or local correlation of the first property (contamination) with the second property (damage or destruction) emerges.
Zur endgültigen Beurteilung der Verschmutzung der Banknote, wird die die Verschmutzung kennzeiclinende erste Eigenschaft erneut von der Steuereinrichtung 35 aus den Daten (dunkle Flecken in Darstellung 131) des ersten Sensors 31 abgeleitet, wobei die Ableitung aus den Daten verändert wird.For the final assessment of the soiling of the banknote, the first characteristic characterizing the soiling is again derived by the control device 35 from the data (dark spots in illustration 131) of the first sensor 31, the derivation from the data being changed.
Bei der veränderten Ableitung kann es vorgesehen sein, daß die Daten des optische Sensors 31, die örtlich mit der mindestens zweiten Eigenschaft (Beschädigung oder Zerstörung) korrelieren, nicht berücksichtigt werden. In diesem Fall ergibt sich bei einem letzten Schritt 80 der Bearbeitung durch die Steuereinrichtung 35, die in einer Darstellung 81 gezeigte Verteilung von Verschmutzung auf der zu überprüfenden Banknote, die bei der erneuten Ableitung der ersten Eigenschaft (Verschmutzung) berücksichtigt wird. Somit werden Stellen auf der zu überprüfenden Banknote, die irrtümlich als Verschmutzung bewertetet werden könnten (Löcher 1", Risse 3", Fehlstellen 4", Eselsohren A. " , Klebestreifen 6" usw.) nicht berücksichtigt, wodurch sich eine Verbesserung der Überprüfung der Banknote ergibt.With the changed derivation, it can be provided that the data of the optical sensor 31, which correlate locally with the at least second property (damage or destruction), are not taken into account. In this case, in a last step 80 of processing by the control device 35, the distribution of contamination on the banknote to be checked, which is shown in a representation 81, results, which is taken into account when the first property (contamination) is derived again. Thus, places on the banknote to be checked that could be mistakenly rated as soiling (holes 1 ", tears 3", missing parts 4 ", donkey ears A.", adhesive strips 6 "etc.) are not taken into account, which improves the checking of the Banknote results.
Aus der in der Darstellung 81 gezeigten Verschmutzung der Banknote, die im Speicher der Steuereinrichtung 35 gespeichert wird, kann abschließend eine Beurteilung durch die Steuereinrichtung 35 vorgenommen werden, um die Banknote z. B. als verschmutzt, wenig verschmutzt oder nicht ver- schmutzt einzustufen. Diese Einstufung kann für eine Entscheidung verwendet werden, ob die Banknote z. B. noch umlauffähig ist.From the contamination of the banknote shown in the illustration 81, which is stored in the memory of the control device 35, the control device 35 can then make an assessment in order to check the banknote. B. as dirty, little dirty or not dirty to classify dirty. This classification can be used for a decision whether the banknote e.g. B. is still fit for circulation.
Bei der veränderten Ableitung kann es alternativ oder zusätzlich vorgesehen sein, daß die Daten des optischen Sensors 31, die örtlich mit der mindestens zweiten Eigenschaft korrelieren, analog verarbeitet werden, z. B. mittels einer Linearkombination. Ebenso können bei der veränderten Ableitung Verfahren der Fuzzy-Logik alternativ oder zusätzlich eingesetzt werden. Dabei können die Daten des optischen Sensors 31 alternativ oder zusätzlich auch mit Daten anderer Sensoren verknüpft werden, wobei immer Daten verknüpft werden, die sich auf den selben Ort der jeweils zu untersuchenden Banknote beziehen.In the case of the changed derivation, it can alternatively or additionally be provided that the data of the optical sensor 31, which correlate locally with the at least second property, are processed analogously, e.g. B. by means of a linear combination. Likewise, methods of fuzzy logic can be used alternatively or additionally for the changed derivation. The data from the optical sensor 31 can alternatively or additionally also be linked to data from other sensors, wherein data are always linked which relate to the same location of the bank note to be examined in each case.
Durch die beschriebene Korrelation der verschiedener Daten kann somit er- reicht werden, daß das Ergebnis der Überprüfung der Banknoten allgemein verbessert wird. Dies wird - wie beschrieben - dadurch erreicht, daß in allen Fällen von Ungenauigkeit oder Unsicherheit bei einer Entscheidung über den Zustand, die Echtheit, den Typ der Banknote usw. statt allein anhand von Daten eines Sensors, durch die Verknüpfung mit Daten eines oder meh- rerer anderer Sensoren erreicht wird, daß die Qualität der vorgenommenen Beurteilung steigt. Dadurch werden auch lästige manuelle Nacharbeiten überflüssig, d. h. Beurteilungen der Banknoten durch einen Bediener. Auf diese Weise läßt sich durch den Einsatz des erfindungsgemäßen Verfahrens bzw. der erfindungsgemäßen Vorrichtung die Zurückweisungsrate von Banknoten bei der Bearbeitung mit einer Banknotenbearbeitungsmaschine erheblich verringern, wodurch sich die Nacharbeiten entsprechend verringern und der zu erreichende Durchsatz von Banknoten erhöht. The described correlation of the various data can thus achieve that the result of the checking of the banknotes is generally improved. This is achieved - as described - in that in all cases of inaccuracy or uncertainty when making a decision about the condition, the authenticity, the type of the banknote etc. instead of solely on the basis of data from a sensor, by linking data with one or more other sensors is achieved that the quality of the assessment made increases. This also makes annoying manual rework unnecessary. H. Operator assessments of banknotes. In this way, by using the method and the device according to the invention, the rejection rate of banknotes during processing with a banknote processing machine can be considerably reduced, whereby the reworking is correspondingly reduced and the throughput of banknotes to be achieved is increased.

Claims

P a t e n t a n S p r ü c h e P atentan speech
1. Verfahren für die Überprüfung von Banknoten, bei dem Daten aus mindestens zwei unterschiedlichen Messungen der zu überprüfenden Banknoten ausgewertet werden, dadurch gekennzeichnet, daß eine erste Eigenschaft der zu überprüfenden Banknote aus den Daten mindestens einer ersten Messung abgeleitet wird, mindestens eine zweite Eigenschaft der zu überprüfenden Banknote aus den Daten mindestens einer zweiten Messung abgeleitet wird, eine Korrelation zwischen erster und mindestens zweiter Eigenschaft für gleiche Orte der zu überprüfenden Banknote ermittelt wird, und die erste Eigenschaft erneut abgeleitet wird, wobei an Orten der zu überprüfenden Banknote, für die eine Korrelation zwischen erster und mindestens zweiter Eigenschaft ermittelt wurde, eine veränderte Ableitung der ersten Eigenschaft aus den Daten der mindestens ersten Messung vorgenommen wird.1. A method for checking banknotes, in which data from at least two different measurements of the banknotes to be checked are evaluated, characterized in that a first property of the banknote to be checked is derived from the data of at least one first measurement, at least one second property of banknote to be checked is derived from the data of at least one second measurement, a correlation between the first and at least second properties is determined for the same locations of the banknote to be checked, and the first property is derived again, at locations of the banknote to be checked for which one Correlation between the first and at least second properties was determined, a modified derivation of the first property is carried out from the data of the at least first measurement.
2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß bei der veränderten Ableitung Daten von Orten mit einer Korrelation nicht berücksichtigt werden.2. The method according to claim 1, characterized in that data from locations with a correlation are not taken into account in the changed derivation.
3. Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß bei den Messungen Daten für mindestens eine Seite der zu überprüfenden Banknote erzeugt werden.3. The method according to claim 1 or 2, characterized in that data for at least one side of the banknote to be checked are generated in the measurements.
4. Verfahren nach Anspruch 3, dadurch gekennzeichnet, daß Daten für die vollständige Seite der zu überprüfenden Banknote erzeugt werden. 4. The method according to claim 3, characterized in that data are generated for the complete page of the banknote to be checked.
5. Verfahren nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die erste Eigenschaft eine Verschmutzung der zu überprüfenden Banknoten ist.5. The method according to any one of claims 1 to 4, characterized in that the first property is contamination of the banknotes to be checked.
6. Verfahren nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß die erste Messung eine optische Messung ist.6. The method according to any one of claims 1 to 5, characterized in that the first measurement is an optical measurement.
7. Verfahren nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß die zweite Eigenschaft eine Beschädigung der zu überprüfenden Bank- noten ist.7. The method according to any one of claims 1 to 6, characterized in that the second property is damage to the bank notes to be checked.
8. Verfahren nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß die zweite Messung eine optische und/ oder akustische Messung ist.8. The method according to any one of claims 1 to 7, characterized in that the second measurement is an optical and / or acoustic measurement.
9. Vorrichtung für die Überprüfung von Banknoten, mit mindestens zwei Sensoren (31, 32, 33), deren Daten für die Überprüfung der Banknoten von einer Steuereinrichtung (35) ausgewertet werden, dadurch gekennzeichnet, daß die Steuereinrichtung (35) eine erste Eigenschaft der zu überprüfenden Banknote aus den Daten mindestens eines ersten Sensors (31) ableitet, die Steuereinrichtung (35) mindestens eine zweite Eigenschaft der zu überprüfenden Banknote aus den Daten mindestens eines zweiten Sensors (32, 33) ableitet, die Steuereinrichtung (35) eine Korrelation zwischen erster und mindestens zweiter Eigenschaft für gleiche Orte der zu überprüfenden Banknote ermittelt, und die Steuereinrichtung (35) die erste Eigenschaft erneut ableitet, wobei an Orten der zu überprüfenden Banknote, für die eine Korrelation zwischen erster und mindestens zweiter Eigenschaft ermittelt wurde, eine veränderte Ablei- tung der ersten Eigenschaft aus den Daten des mindestens ersten Sensors (31) voπiimmt.9. Device for checking banknotes, with at least two sensors (31, 32, 33), the data for checking the banknotes are evaluated by a control device (35), characterized in that the control device (35) has a first property of derives the banknote to be checked from the data of at least one first sensor (31), the control device (35) derives at least one second property of the banknote to be checked from the data of at least one second sensor (32, 33), the control device (35) a correlation between the first and at least second properties are determined for the same locations of the banknote to be checked, and the control device (35) derives the first property again, a different derivative being found at locations of the banknote to be checked for which a correlation between the first and at least second properties has been determined - device of the first property from the data of the at least first sensor (31).
10. Vorrichtung nach Anspruch 9, dadurch gekennzeichnet, daß die Steuer- einrichtung (35) bei der veränderten Ableitung Daten des mindestens ersten10. The device according to claim 9, characterized in that the control device (35) at the changed derivative data of the at least first
Sensors (31) von Orten mit einer Korrelation nicht berücksichtigt.Sensors (31) from locations with a correlation are not taken into account.
11. Vorrichtung nach Anspruch 9 oder 10, dadurch gekennzeichnet, daß die Sensoren (31, 32, 33) Daten für mindestens eine Seite der zu überprüfenden Banknote erzeugen.11. The device according to claim 9 or 10, characterized in that the sensors (31, 32, 33) generate data for at least one side of the banknote to be checked.
12. Vorrichtung nach Anspruch 11, dadurch gekennzeichnet, daß die Sensoren (31, 32, 33) Daten für die vollständige Seite der zu überprüfenden Banknote erzeugen.12. The apparatus according to claim 11, characterized in that the sensors (31, 32, 33) generate data for the complete side of the banknote to be checked.
13. Vorrichtung nach einem der Ansprüche 9 bis 12, dadurch gekennzeichnet, daß die erste Eigenschaft eine Verschmutzung der zu überprüfenden Banknoten ist.13. Device according to one of claims 9 to 12, characterized in that the first property is contamination of the banknotes to be checked.
14. Vorrichtung nach einem der Ansprüche 9 bis 13, dadurch gekennzeichnet, daß der erste Sensor (31) ein optischer Sensor ist.14. Device according to one of claims 9 to 13, characterized in that the first sensor (31) is an optical sensor.
15. Vorrichtung nach einem der Ansprüche 9 bis 14, dadurch gekennzeichnet, daß die zweite Eigenschaft eine Beschädigung der zu überprüfenden Banknoten ist.15. Device according to one of claims 9 to 14, characterized in that the second property is damage to the banknotes to be checked.
16. Vorrichtung nach einem der Ansprüche 9 bis 15, dadurch gekennzeichnet, daß der zweite Sensor (32, 33) ein optischer (32) und/ oder akustischer Sensor (33) ist. 16. Device according to one of claims 9 to 15, characterized in that the second sensor (32, 33) is an optical (32) and / or acoustic sensor (33).
EP03813130.6A 2002-12-18 2003-12-16 Method and device for the checking of banknotes Expired - Lifetime EP1576553B1 (en)

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