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EP1927086B1 - Method and device for testing valuable documents - Google Patents

Method and device for testing valuable documents Download PDF

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Publication number
EP1927086B1
EP1927086B1 EP06791944A EP06791944A EP1927086B1 EP 1927086 B1 EP1927086 B1 EP 1927086B1 EP 06791944 A EP06791944 A EP 06791944A EP 06791944 A EP06791944 A EP 06791944A EP 1927086 B1 EP1927086 B1 EP 1927086B1
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EP
European Patent Office
Prior art keywords
value
document
irradiating
sensors
detector
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.)
Not-in-force
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EP06791944A
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German (de)
French (fr)
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EP1927086A1 (en
Inventor
Sven Ehrich
Bernd Wunderer
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Giesecke and Devrient GmbH
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Giesecke and Devrient GmbH
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Publication of EP1927086A1 publication Critical patent/EP1927086A1/en
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    • 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

Definitions

  • the present invention relates to a method and apparatus for testing value documents, in particular banknotes, to determine value document properties.
  • value documents are, in particular, banknotes but also documents and documents requiring further protection, such as checks, shares, identity cards, passports, entrance tickets, tickets and the like.
  • Characteristic features of these value documents are checked to determine their authenticity.
  • sensors adapted to the properties to be tested are used.
  • optical sensors for example, the absorption, transmission and / or luminescence properties of value documents can be tested.
  • the object of the present invention is to propose a simplified method and a simplified device for testing documents of value in order to record both value-document properties independent of asymmetrical effects of the value document and also the asymmetrical effects of the value document.
  • the valuable document area to be tested is detected by means of two (or more) sensors from different directions, wherein the value document properties to be tested, in particular thus authenticity features, are determined unaffected by asymmetrical effects of the value document by adding the measured values of both sensors, whereas the asymmetrical effects, such as wrinkles and asymmetrical reflections, are determined by subtraction of the measured values supplied by the sensors.
  • Essential for the invention is therefore an evaluation of the measured values both by summation and by subtraction.
  • the measured values supplied by the sensors are added in order to obtain a total measured value which is insensitive to asymmetrical effects of the value document.
  • the difference is formed to capture just these unbalanced effects. In this way, both authenticity features and other value-document-specific features as well as the condition quality of the value document can be tested by means of a single device, which is derived precisely from asymmetrical effects.
  • the sensors each comprise an illumination device for irradiating the valuable document area to be tested and a detector for measuring value document radiation in the irradiated valuable document area.
  • the detectors are arranged relative to the value document on the same side as the illumination devices or on the opposite side of the value document.
  • either the detectors or the illumination devices of the sensors are combined to form a common detector or a common illumination device. This is particularly useful when the two sensors are arranged symmetrically relative to the valuable document area to be tested. As a result, the design effort for the sensor device can be significantly reduced.
  • the banknote by means of two illumination devices from different irradiation directions and to provide a common detector, for example, centrally between the illumination devices.
  • a common detector for example, centrally between the illumination devices.
  • the evaluation device coupled to the illumination receives from the detector at appropriate times recorded radiation readings, which is due either to one or the other of the two lighting devices.
  • the two radiation measurement values can then be summed up as well as used for subtraction. If the difference approaches zero, this means that the value document is virtually new.
  • a problem with the abovementioned embodiment is the control effort for the alternating activation of the two illumination devices.
  • the value document areas respectively irradiated by the two illumination devices do not exactly match if the value documents, as is generally customary in bank note checking, are passed continuously and not intermittently past the checking device.
  • a further preferred embodiment of the invention therefore provides that the two (or more) sensors use a common illumination device instead of a common detector.
  • the illumination device is arranged, for example, centrally between two detectors, preferably aligned symmetrically with respect to the valuable document area to be tested.
  • the illumination device is arranged, for example, centrally between two detectors, preferably aligned symmetrically with respect to the valuable document area to be tested.
  • detector arrays in particular linearly arranged detector arrays
  • the irradiation of the banknote can also take place, for example, by means of LED arrays, in particular linearly arranged LED arrays.
  • FIG. 1 shows a first embodiment of an apparatus 1 for testing documents of value, in particular banknotes BN.
  • a housing 2 two sensors are directed to a measuring zone 3, which corresponds to a value-document area of the banknote BN to be detected.
  • the banknote BN is transported (in the direction of the arrow) past the device 1 in order to successively test different value-document areas.
  • the two sensors each comprise an illumination device 4, a detector 5 and a Selfoc lens 6 arranged between the detector 5 and the measurement zone 3.
  • the detectors 5 are connected via lines 7 to an evaluation device 8.
  • the lighting devices 4 are coupled via lines 9 to the evaluation device 8.
  • the radiation direction of the illumination devices 4 is represented in each case by an arrow which originates from the radiation devices 4 and points to the measurement zone 3.
  • the banknote BN is transported past the device 1, it is irradiated alternately in the measuring zone 3 by the one and the other illumination device 4.
  • the respective radiation periods of the evaluation device 8 are communicated via the connecting lines 9, or the illumination devices 4 are correspondingly controlled by the evaluation device 8 via these lines 9.
  • the periods may well overlap, provided that time windows remain in which only one and only the other of the two lighting devices 4 are active.
  • radiation of the value document falling through the Selfoc lenses 6 is detected, and the detected radiation measurement values are transmitted via the lines 7 to the evaluation device 8.
  • each of the two illumination devices 4 is permanently assigned to one of the two detectors 5, such that only such radiation measurement values supplied by a detector 5 are used for the evaluation, which were acquired during the period in which the illumination device 4 assigned to this detector alone was active.
  • the radiation measured values for a measuring point detected by the detectors 5 are then added on the one hand to a first measured value and on the other hand a second measured value is formed by subtraction.
  • the first measured value the features characterizing the banknote, eg. As authenticity features, currency, denomination characteristics, etc., to be checked in order to derive statements about genuineness and type (currency, denomination) of the banknote.
  • the second measured value the asymmetrical properties, z. B. Knitter, are checked to derive a statement about the state of the bill.
  • the evaluation device 8 alternately receives radiation measurement values via the common detector 5, which are due to the irradiation of the banknote BN by means of one or the other of the two illumination devices 4. Due to the coupling of the evaluation device 8 with the illumination devices 4 via the connecting lines 9, a synchronization of the radiation measured values supplied by the detector 5 with the respective illumination periods of the illumination devices 4 is ensured.
  • the two sensors share a lighting device 4.
  • On the connecting line 9 between the evaluation device 8 and the illumination device 4 may optionally be omitted in this embodiment, since the illumination device 4 does not have to be controlled by the evaluation device 8. Instead, the illumination device 4 can be permanently switched on or activated, for example, by a light barrier, when the banknote BN enters the measuring zone 3.
  • the evaluation device 8 then receives the radiation measurement values detected by the two detectors 5 via the lines 7 and performs addition and subtraction in order to be able to infer, for example, the authenticity and the state of the value document on the basis of the results obtained.

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

In an apparatus for testing value documents, such as for example bank notes, an area of the bank note is captured from different directions with the help of two optical sensors aligned symmetrically to each other. The measured values supplied by the sensors on the one hand are added up in order to obtain a total measured value which is insensitive to asymmetric effects of the value document, and on the other hand the measured values are subtracted in order to capture exactly these asymmetric effects. In this way with the help of one single apparatus there can be tested authenticity features as well as the quality of the actual state of the value document.

Description

Die vorliegende Erfindung betrifft ein Verfahren und eine Vorrichtung zum Testen von-Wertdokumenten, insbesondere Banknoten, um Wertdokuinenteigenschaften zu ermitteln.The present invention relates to a method and apparatus for testing value documents, in particular banknotes, to determine value document properties.

Bei Wertdokumenten im Sinne der vorliegenden Erfindung handelt es sich insbesondere um Banknoten, aber auch um andere eine Absicherung benötigende Dokumente und Urkunden wie zum Beispiel Schecks, Aktien, Ausweiskarten, Pässe, Eintrittskarten, Fahrscheine und dergleichen.For the purposes of the present invention, value documents are, in particular, banknotes but also documents and documents requiring further protection, such as checks, shares, identity cards, passports, entrance tickets, tickets and the like.

Charakteristische Eigenschaften dieser Wertdokumente werden zur Bestimmung ihrer Echtheit geprüft. Dazu werden, unterschiedlichste, an die jeweils zu prüfenden Eigenschaften angepasste Sensoren eingesetzt. Mittels optischer Sensoren lassen sich beispielsweise die Absorptions-, Transmissions- und/ oder Lumineszenzeigenschaften von Wertdokumenten testen.Characteristic features of these value documents are checked to determine their authenticity. For this purpose, a wide variety of sensors adapted to the properties to be tested are used. By means of optical sensors, for example, the absorption, transmission and / or luminescence properties of value documents can be tested.

Aufgrund täglichen Gebrauchs kann es bei manchen Wertdokurnentarten zu Abnutzungserscheinungen kommen. Dies gilt insbesondere für Banknoten, die im Laufe der Zeit verknittern und deren Oberflächen verschmutzen. Beides bewirkt ein unsymmetrisches Reflexionsverhalten. Um auch derartige Wertdokumente zuverlässig mittels optischer Sensoren testen zu können, wird der zu testende Wertdokumentbereich gleichzeitig aus verschiedenen Richtungen beleuchtet. Dadurch sind die optischen Sensoren unempfindlich gegenüber den vorgenannten unsymmetrischen Effekten. Eine derartige Vorgehensweise ist aus der EP 0092691 A1 bekannt.Due to daily use, some types of value token can cause signs of wear. This is especially true of banknotes that wrinkle over time and soil their surfaces. Both effects an asymmetrical reflection behavior. In order to reliably test such value documents by means of optical sensors as well, the value-document area to be tested is illuminated simultaneously from different directions. As a result, the optical sensors are insensitive to the aforementioned asymmetrical effects. Such an approach is from the EP 0092691 A1 known.

Andererseits werden Wertdokumente nicht nur auf ihre Echtheit hin getestet, sondern sie werden auch hinsichtlich ihrer Umlauffähigkeit überprüft. Es werden daher zusätzliche Sensoren eingesetzt, um gerade diejenigen Eigenschaften mit vorwiegend unsymmetrischen Effekten im Reflexionsverhalten zu prüfen, die wegen der besonderen Beleuchtung mittels der vorgenannten optischen Sensoren gerade nicht erfassbar sind, insbesondere also zum Beispiel Knitter und Verschmutzung. Eine derartige Vorgehensweise ist aus der DE 2 749 873 A1 bekannt.On the other hand, value documents are not only tested for their authenticity, but they are also checked for their fitness for circulation. Therefore, additional sensors are used to achieve precisely those properties with predominantly asymmetrical effects in the reflection behavior to examine, because of the special lighting by means of the aforementioned optical sensors just can not be detected, in particular so for example, crease and pollution. Such an approach is from the DE 2 749 873 A1 known.

Aufgabe der vorliegenden Erfindung ist es, ein vereinfachtes Verfahren und eine vereinfachte Vorrichtung zum Testen von Wertdokumenten vorzuschlagen, um sowohl Wertdokumenteigenschaften unabhängig von unsymmetrischen Effekten des Wertdokuments als auch die unsymmetrischen Effekte des Wertdokuments zu erfassen.The object of the present invention is to propose a simplified method and a simplified device for testing documents of value in order to record both value-document properties independent of asymmetrical effects of the value document and also the asymmetrical effects of the value document.

Diese Aufgabe wird durch ein Verfahren und eine Vorrichtung mit den Merkmalen der nebengeordneten Patentansprüche gelöst. In davon abhängigen Ansprüchen sind vorteilhafte Weiterbildungen und Ausgestaltungen der Erfindung angegeben.This object is achieved by a method and a device having the features of the independent claims. In dependent claims advantageous developments and refinements of the invention are given.

Erfindungsgemäß wird der zu testende Wertdokumentbereich mittels zwei (oder mehr) Sensoren aus unterschiedlichen Richtungen erfasst, wobei die zu testenden Wertdokumenteigenschaften, insbesondere also Echtheitsmerkmale, unbeeinflusst von unsymmetrischen Effekten des Wertdokuments ermittelt werden, indem die Messwerte beider Sensoren addiert werden, wohingegen die unsymmetrischen Effekte, wie zum Beispiel Knitter und unsymmetrische Reflexionen, durch Differenzbildung der von den Sensoren gelieferten Messwerte ermittelt werden. Wesentlich für die Erfindung ist somit ein Auswerten der Messwerte sowohl durch Aufsummieren als auch durch Differenzbildung.According to the invention, the valuable document area to be tested is detected by means of two (or more) sensors from different directions, wherein the value document properties to be tested, in particular thus authenticity features, are determined unaffected by asymmetrical effects of the value document by adding the measured values of both sensors, whereas the asymmetrical effects, such as wrinkles and asymmetrical reflections, are determined by subtraction of the measured values supplied by the sensors. Essential for the invention is therefore an evaluation of the measured values both by summation and by subtraction.

Die von den Sensoren gelieferten Messwerte werden einerseits addiert, um einen Gesamtmesswert zu erhalten, der unempfindlich gegenüber unsymmetrischen Effekten des Wertdokuments ist. Zusätzlich wird aus den Messwerten die Differenz gebildet, um gerade diese unsymmetrischen Effekte zu erfassen. Auf diese Weise können mittels einer einzigen Vorrichtung sowohl Echtheitsmerkmale und sonstige wertdokumentenspezifische Merkmale als auch die Zustandsqualität des Wertdokuments getestet werden, die sich gerade aus unsymmetrischen Effekten ableitet.On the one hand, the measured values supplied by the sensors are added in order to obtain a total measured value which is insensitive to asymmetrical effects of the value document. In addition, from the measured values the difference is formed to capture just these unbalanced effects. In this way, both authenticity features and other value-document-specific features as well as the condition quality of the value document can be tested by means of a single device, which is derived precisely from asymmetrical effects.

Die Sensoren umfassen jeweils eine Beleuchtungseinrichtung zum Bestrahlen des zu testenden Wertdokumentbereichs und einen Detektor zum Messen von Wertdokumentstrahlung in dem bestrahlten Wertdokumentbereich. Je nach dem ob das Reflexions-, Transmissions- oder Emissionsverhalten des Wertdokuments geprüft werden soll, sind die Detektoren relativ zum Wertdokument auf derselben Seite wie die Beleuchtungseinrichtungen oder auf der gegenüberliegenden Seite des Wertdokuments angeordnet.The sensors each comprise an illumination device for irradiating the valuable document area to be tested and a detector for measuring value document radiation in the irradiated valuable document area. Depending on whether the reflection, transmission or emission behavior of the value document is to be checked, the detectors are arranged relative to the value document on the same side as the illumination devices or on the opposite side of the value document.

Vorzugsweise sind entweder die Detektoren oder die Beleuchtungseinrichtungen der Sensoren zu einem gemeinsamen Detektor bzw. zu einer gemeinsamen Beleuchtungseinrichtung zusammengefasst. Dies ist besonders zweckmäßig, wenn die beiden Sensoren relativ zum zu prüfenden Wertdokumentbereich symmetrisch angeordnet sind. Dadurch lässt sich der konstruktive Aufwand für die Sensoreinrichtung deutlich reduzieren.Preferably, either the detectors or the illumination devices of the sensors are combined to form a common detector or a common illumination device. This is particularly useful when the two sensors are arranged symmetrically relative to the valuable document area to be tested. As a result, the design effort for the sensor device can be significantly reduced.

So ist es beispielsweise vorteilhaft, die Banknote mittels zweier Beleuchtungseinrichtungen aus verschiedenen Einstrahlrichtungen zu bestrahlen und einen gemeinsamen Detektor zum Beispiel zentral zwischen den Beleuchtungseinrichtungen vorzusehen. Um auf Basis der von dem gemeinsamen Detektor gelieferten Messwerte auch Strahlungsdifferenzen ermitteln zu können, ist es zweckmäßig, die beiden Beleuchtungseinrichtungen entsprechend abwechselnd zu aktivieren. Die mit der Beleuchtung gekoppelte Auswerteeinrichtung erhält dann zu entsprechenden Zeiten von dem Detektor erfasste Strahlungsmesswerte, die entweder auf die eine oder auf die andere der beiden Beleuchtungseinrichtungen zurückzuführen ist. Die beiden Strahlungsmesswerte können dann sowohl aufsummiert werden als auch zur Differenzbildung verwendet werden. Geht die Differenz gegen Null, so bedeutet dies, dass das Wertdokument quasi neuwertig ist.Thus, it is advantageous, for example, to irradiate the banknote by means of two illumination devices from different irradiation directions and to provide a common detector, for example, centrally between the illumination devices. In order to be able to determine radiation differences on the basis of the measured values supplied by the common detector, it is expedient to activate the two illumination devices alternately. The evaluation device coupled to the illumination then receives from the detector at appropriate times recorded radiation readings, which is due either to one or the other of the two lighting devices. The two radiation measurement values can then be summed up as well as used for subtraction. If the difference approaches zero, this means that the value document is virtually new.

Problematisch an der vorerwähnten Ausführungsform ist jedoch der Steuerungsaufwand zum alternierenden Aktivieren der beiden Beleuchtungseinrichtungen. Außerdem stimmen die von den beiden Beleuchtungseinrichtungen jeweils bestrahlten Wertdokumentbereiche nicht exakt überein, wenn die Wertdokumente, wie es bei der Banknotenprüfung allgemein üblich ist, kontinuierlich und nicht intermittierend an der Prüfvorrichtung vorbeigeführt werden.However, a problem with the abovementioned embodiment is the control effort for the alternating activation of the two illumination devices. In addition, the value document areas respectively irradiated by the two illumination devices do not exactly match if the value documents, as is generally customary in bank note checking, are passed continuously and not intermittently past the checking device.

Eine weiter bevorzugte Ausführungsform der Erfindung sieht daher vor, dass die beiden (oder mehreren) Sensoren statt eines gemeinsamen Detektors eine gemeinsame Beleuchtungseinrichtung nutzen. In diesem Falle ist also die Beleuchtungseinrichtung zum Beispiel zentral zwischen zwei vorzugsweise symmetrisch zu dem zu prüfenden Wertdokumentbereich ausgerichteten Detektoren angeordnet. Anders als im Falle der Beleuchtung mittels zweier Beleuchtungseinrichtungen (und gemeinsamen Detektor) ist es im Falle der Messwerterfassung mittels zweier Detektoren (und gemeinsamer Beleuchtungseinrichtung) nicht notwendig, die Detektoren alternierend zu betreiben. Es reicht aus, wenn in der Auswerteeinrichtung die von den Detektoren gelieferten Messwerte einerseits aufsummiert werden und andererseits zur Differenzbildung herangezogen werden. Der technische Mehraufwand kann somit auf eine anzupassende Software beschränkt bleiben. Zudem tritt die oben erwähnte, durch den Transport des zu prüfenden Wertdokuments verursachte, Abweichung nicht auf.A further preferred embodiment of the invention therefore provides that the two (or more) sensors use a common illumination device instead of a common detector. In this case, therefore, the illumination device is arranged, for example, centrally between two detectors, preferably aligned symmetrically with respect to the valuable document area to be tested. Unlike in the case of illumination by means of two illumination devices (and common detector), in the case of measured value acquisition by means of two detectors (and common illumination device), it is not necessary to operate the detectors alternately. It is sufficient if, in the evaluation device, the measured values supplied by the detectors are summed up on the one hand and used for subtraction on the other hand. The additional technical effort can thus be limited to a software to be adapted. In addition, the above-mentioned deviation caused by the transport of the value document to be checked does not occur.

Um die Wertdokumente, insbesondere Banknoten, über ihre gesamte Transportbreite erfassen zu können, werden vorzugsweise Detektorarrays, insbesondere linear angeordnete Detektorarrays, eingesetzt. Auch die Bestrahlung der Banknote kann beispielsweise durch LED-Arrays, insbesondere linear angeordnete LED-Arrays, erfolgen.In order to be able to record the value documents, in particular banknotes, over their entire transport width, detector arrays, in particular linearly arranged detector arrays, are preferably used. The irradiation of the banknote can also take place, for example, by means of LED arrays, in particular linearly arranged LED arrays.

Nachfolgend wird die Erfindung beispielhaft anhand der begleitenden Zeichnungen erläutert. Darin zeigen:

Figur 1
schematisch eine erfindungsgemäße Vorrichtung zum Testen von Wertdokumenten mit zwei separaten Sensoren,
Figur 2
die Vorrichtung aus Figur 1, wobei sich die beiden Sensoren einen Detektor teilen, und
Figur 3
die Vorrichtung aus Figur 1, wobei sich die beiden Sensoren eine Beleuchtungseinrichtung teilen.
The invention will now be described by way of example with reference to the accompanying drawings. Show:
FIG. 1
1 schematically a device according to the invention for testing value documents with two separate sensors,
FIG. 2
the device off FIG. 1 , where the two sensors share a detector, and
FIG. 3
the device off FIG. 1 , wherein the two sensors share a lighting device.

Figur 1 zeigt ein erstes Ausführungsbeispiel einer Vorrichtung 1 zum Testen von Wertdokumenten, insbesondere Banknoten BN. In einem Gehäuse 2 sind zwei Sensoren auf eine Messzone 3 gerichtet, die einem zu erfassenden Wertdokumentbereich der Banknote BN entspricht. Die Banknote BN wird (in Pfeilrichtung) an der Vorrichtung 1 vorbeitransportiert wird, um sukzessive verschiedene Wertdokumentbereiche zu testen. FIG. 1 shows a first embodiment of an apparatus 1 for testing documents of value, in particular banknotes BN. In a housing 2, two sensors are directed to a measuring zone 3, which corresponds to a value-document area of the banknote BN to be detected. The banknote BN is transported (in the direction of the arrow) past the device 1 in order to successively test different value-document areas.

Die beiden Sensoren umfassen jeweils eine Beleuchtungseinrichtung 4, einen Detektor 5 und eine zwischen dem Detektor 5 und der Messzone 3 angeordnete Selfoc-Linse 6. Die Detektoren 5 sind über Leitungen 7 an eine Auswerteeinrichtung 8 angeschlossen. Auch die Beleuchtungseinrichtungen 4 sind über Leitungen 9 an die Auswerteeinrichtung 8 gekoppelt. Die Strahlungsrichtung der Beleuchtungseinrichtungen 4 ist jeweils durch einen von den Strahlungseinrichtungen 4 ausgehenden, auf die Messzone 3 gerichteten Pfeil dargestellt.The two sensors each comprise an illumination device 4, a detector 5 and a Selfoc lens 6 arranged between the detector 5 and the measurement zone 3. The detectors 5 are connected via lines 7 to an evaluation device 8. The lighting devices 4 are coupled via lines 9 to the evaluation device 8. The radiation direction of the illumination devices 4 is represented in each case by an arrow which originates from the radiation devices 4 and points to the measurement zone 3.

Wenn nun die Banknote BN an der Vorrichtung 1 vorbeitransportiert wird, wird sie in der Messzone 3 alternierend von der einen und der anderen Beleuchtungseinrichtung 4 bestrahlt. Über die Verbindungsleitungen 9 werden die jeweiligen Strahlungsperioden der Auswerteeinrichtung 8 mitgeteilt oder die Beleuchtungseinrichtungen 4 werden von der Auswerteeinrichtung 8 über diese Leitungen 9 entsprechend gesteuert. Die Perioden können sich durchaus überlappen, sofern Zeitfenster verbleiben, in denen nur die eine und nur die andere der beiden Beleuchtungseinrichtungen 4 aktiv sind. Mittels der Detektoren 5 wird durch die Selfoc-Linsen 6 fallende Strahlung des Wertdokuments erfasst, und die erfassten Strahlungsmesswerte werden über die Leitungen 7 an die Auswerteeinrichtung 8 übermittelt. Dabei ist jede der beiden Beleuchtungseinrichtungen 4 einem der beiden Detektoren 5 fest zugeordnet, derart, dass nur solche von einem Detektor 5 gelieferten Strahlungsmesswerte zur Auswertung herangezogen werden, die während derjenigen Zeitspanne erfasst wurden, in der die diesem Detektor zugeordnete Beleuchtungseinrichtung 4 allein aktiv war. Die von den Detektoren 5 jeweils erfassten Strahlungsmesswerte für einen Meßpunkt werden dann einerseits zu einem ersten Messwert addiert und andererseits wird durch Differenzbildung ein zweiter Messwert gebildet. Mittels des ersten Messwerts können die die Banknote kennzeichnenden Merkmale, z. B. Echtheitsmerkmale, Währungs-, Denominationsmerkmale usw., geprüft werden, um Aussagen über Echtheit und Art (Währung, Denomination) der Banknote abzuleiten. Mittels des zweiten Messwerts können die unsymmetrischen Eigenschaften, z. B. Knitter, geprüft werden, um eine Aussage über den Zustand der Banknote abzuleiten.If now the banknote BN is transported past the device 1, it is irradiated alternately in the measuring zone 3 by the one and the other illumination device 4. The respective radiation periods of the evaluation device 8 are communicated via the connecting lines 9, or the illumination devices 4 are correspondingly controlled by the evaluation device 8 via these lines 9. The periods may well overlap, provided that time windows remain in which only one and only the other of the two lighting devices 4 are active. By means of the detectors 5, radiation of the value document falling through the Selfoc lenses 6 is detected, and the detected radiation measurement values are transmitted via the lines 7 to the evaluation device 8. In this case, each of the two illumination devices 4 is permanently assigned to one of the two detectors 5, such that only such radiation measurement values supplied by a detector 5 are used for the evaluation, which were acquired during the period in which the illumination device 4 assigned to this detector alone was active. The radiation measured values for a measuring point detected by the detectors 5 are then added on the one hand to a first measured value and on the other hand a second measured value is formed by subtraction. By means of the first measured value, the features characterizing the banknote, eg. As authenticity features, currency, denomination characteristics, etc., to be checked in order to derive statements about genuineness and type (currency, denomination) of the banknote. By means of the second measured value, the asymmetrical properties, z. B. Knitter, are checked to derive a statement about the state of the bill.

Die in Figur 2 dargestellte Vorrichtung unterscheidet sich von der Vorrichtung gemäß Figur 1 lediglich dadurch, dass sich die beiden Sensoren einen Detektor 5 mit einer vorgeschalteten Selfoc-Linse 6 teilen. Im übrigen sind der Aufbau und die Funktionsweise identisch. Das heißt, die Auswerteeinrichtung 8 erhält über den gemeinsamen Detektor 5 abwechselnd Strahlungsmesswerte, die auf die Bestrahlung der Banknote BN mittels der einen oder der anderen der beiden Beleuchtungseinrichtungen 4 zurückzuführen sind. Aufgrund der Kopplung der Auswerteeinrichtung 8 mit den Beleuchtungseinrichtungen 4 über die Verbindungsleitungen 9 ist eine Synchronisierung der vom Detektor 5 gelieferten Strahlungsmesswerte mit den jeweiligen Beleuchtungsperioden der Beleuchtungseinrichtungen 4 sichergestellt.In the FIG. 2 shown device differs from the device according to FIG. 1 merely in that the two sensors share a detector 5 with an upstream Selfoc lens 6. Incidentally, the structure and operation are identical. That is, the evaluation device 8 alternately receives radiation measurement values via the common detector 5, which are due to the irradiation of the banknote BN by means of one or the other of the two illumination devices 4. Due to the coupling of the evaluation device 8 with the illumination devices 4 via the connecting lines 9, a synchronization of the radiation measured values supplied by the detector 5 with the respective illumination periods of the illumination devices 4 is ensured.

Die in Figur 3 dargestellte Vorrichtung unterscheidet sich von der Vorrichtung gemäß Figur 1 dadurch, dass sich die beiden Sensoren eine Beleuchtungseinrichtung 4 teilen. Auf die Verbindungsleitung 9 zwischen der Auswerteeinrichtung 8 und der Beleuchtungseinrichtung 4 kann bei diesem Ausführungsbeispiel gegebenenfalls auch verzichtet werden, da die Beleuchtungseinrichtung 4 nicht durch die Auswerteeinrichtung 8 gesteuert werden muß. Die Beleuchtungseinrichtung 4 kann stattdessen ständig eingeschaltet sein oder beispielsweise durch eine Lichtschranke aktiviert werden, wenn die Banknote BN in die Messzone 3 einläuft. Über die Leitungen 7 erhält die Auswerteeinrichtung 8 dann die von den beiden Detektoren 5 erfassten Strahlungsmesswerte und führt diesbezüglich eine Addition sowie eine Differenzbildung durch, um auf Basis der dabei erhaltenen Ergebnisse zum Beispiel auf die Echtheit und auf den Zustand des Wertdokuments zurückschliessen zu können.In the FIG. 3 shown device differs from the device according to FIG. 1 in that the two sensors share a lighting device 4. On the connecting line 9 between the evaluation device 8 and the illumination device 4 may optionally be omitted in this embodiment, since the illumination device 4 does not have to be controlled by the evaluation device 8. Instead, the illumination device 4 can be permanently switched on or activated, for example, by a light barrier, when the banknote BN enters the measuring zone 3. The evaluation device 8 then receives the radiation measurement values detected by the two detectors 5 via the lines 7 and performs addition and subtraction in order to be able to infer, for example, the authenticity and the state of the value document on the basis of the results obtained.

Claims (16)

  1. A method for testing value documents, in particular bank notes (BN), comprising the steps of:
    - irradiating the value document at least in an area of the value document from a first irradiating direction and measuring value-document radiation in the value-document area from a first detection direction, and/or
    - irradiating the value-document area from a second irradiating direction different from the first irradiating direction, and/or measuring value-document radiation in the value-document area from a second detection direction different from the first detection direction,
    - forming a first measurement value from the measured radiations by adding up the radiation measurement values,
    - forming a second measurement value from the measured radiations by taking the difference between the radiation measurement values,
    characterized by the further steps of
    - deriving a statement about features of the value document which relate to authenticity and/or type of the value document, by means of the first measurement value, and
    - deriving a statement about features of the value document which relate to the condition of the value document, by means of the second measurement value, the features causing asymmetrical effects and being formed by creasing and soiling.
  2. The method according to claim 1, characterized in that the first and second irradiating directions are different, and the first and second detection directions are identical, the step of measuring the value-document radiation from the identical detection direction being effected by means of the same detector (5), in particular by means of a preferably linear detector array.
  3. The method according to claim 1 or 2, characterized in that the irradiating of the value-document area is effected alternatingly from the first and second irradiating directions.
  4. The method according to claim 1, characterized in that the first and second irradiating directions are identical, and the first and second detection directions are different, the step of irradiating the value-document area from the identical irradiating direction being effected by means of the same illumination device (4), in particular by means of a preferably linear LED array.
  5. The method according to any of claims 1 to 4, characterized in that the value document is transported in order to test successive different value-document areas.
  6. The method according to any of claims 1 to 5, characterized in that the first and second irradiating directions and/or the first and second detection directions are disposed symmetrically with respect to the value-document area.
  7. An apparatus for testing value documents, in particular bank notes (BN), comprising:
    - a measuring zone (3), and
    - a sensor device for measuring value-document properties, comprising at least two optical sensors directed onto the measuring zone from different directions and each having at least one illumination device (4) and at least one detector (5), whereby the at least one illumination device (4) or the at least one detector (5) can be associated jointly with the sensors,
    - an evaluation device (8) which is adapted to form a first measurement value from signals of the at least two sensors by adding up, and a second measurement value by taking the difference,
    characterized in that the evaluation device (8) evaluates the first measurement value to derive a statement about features of the value document which relate to authenticity and/or type of the value document, and the evaluation device (8) evaluates the second measurement value to derive a statement about features of the value document which relate to the condition of the value document, the features causing asymmetrical effects and being formed by creasing and soiling.
  8. The apparatus according to claim 7, characterized in that the at least one detector (5) is associated jointly with the sensors.
  9. The apparatus according to claim 7 or 8, characterized by a control device for alternatingly driving the illumination devices (4) of the sensors.
  10. The apparatus according to claim 7, characterized in that the at least one illumination device (4) is associated jointly with the sensors.
  11. The apparatus according to any of claims 7 to 10, characterized by a transport device for transporting the value documents (BN) through the measuring zone (3).
  12. The apparatus according to any of claims 7 to 11, characterized in that the at least one detector (5) is a detector array, in particular a linear detector array.
  13. The apparatus according to any of claims 7 to 12, characterized in that the at least one illumination device (4) is an LED array, in particular a linear LED array.
  14. The apparatus according to any of claims 7 to 13, characterized by at least one Selfoc lens (6) between the measuring zone (3) and the at least one detector (5).
  15. The apparatus according to any of claims 7 to 14, characterized in that the sensors are aligned symmetrically with respect to each other relative to the measuring zone (3).
  16. A bank-note processing machine, characterized by an apparatus for testing bank notes according to any of claims 7 to 15.
EP06791944A 2005-09-09 2006-09-08 Method and device for testing valuable documents Not-in-force EP1927086B1 (en)

Applications Claiming Priority (2)

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DE102005042991A DE102005042991A1 (en) 2005-09-09 2005-09-09 Method and device for testing value documents
PCT/EP2006/008792 WO2007028640A1 (en) 2005-09-09 2006-09-08 Method and device for testing valuable documents

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EP1927086A1 EP1927086A1 (en) 2008-06-04
EP1927086B1 true EP1927086B1 (en) 2009-08-26

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US (1) US7742154B2 (en)
EP (1) EP1927086B1 (en)
AT (1) ATE441166T1 (en)
DE (2) DE102005042991A1 (en)
ES (1) ES2328070T3 (en)
WO (1) WO2007028640A1 (en)

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US11870847B2 (en) * 2019-01-21 2024-01-09 EMC IP Holding Company LLC Decentralized data flow valuation and deployment

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US20080259316A1 (en) 2008-10-23
US7742154B2 (en) 2010-06-22
EP1927086A1 (en) 2008-06-04
WO2007028640A1 (en) 2007-03-15
DE502006004686D1 (en) 2009-10-08
ATE441166T1 (en) 2009-09-15
ES2328070T3 (en) 2009-11-06
DE102005042991A1 (en) 2007-03-22

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