EP1927086A1 - Method and device for testing valuable documents - Google Patents

Method and device for testing valuable documents

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Publication number
EP1927086A1
EP1927086A1 EP06791944A EP06791944A EP1927086A1 EP 1927086 A1 EP1927086 A1 EP 1927086A1 EP 06791944 A EP06791944 A EP 06791944A EP 06791944 A EP06791944 A EP 06791944A EP 1927086 A1 EP1927086 A1 EP 1927086A1
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EP
European Patent Office
Prior art keywords
value
value document
measuring
document
detector
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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
EP06791944A
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German (de)
French (fr)
Other versions
EP1927086B1 (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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Application filed by Giesecke and Devrient GmbH filed Critical Giesecke and Devrient GmbH
Publication of EP1927086A1 publication Critical patent/EP1927086A1/en
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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
    • G07D7/06—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 a device for testing value documents, in particular banknotes, in order 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 particular properties to be tested are used.
  • optical sensors for example, the absorption, transmission and / or luminescence properties of value documents can be tested.
  • 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. th to examine because of the special lighting by means of the aforementioned optical sensors just not detectable, in particular so for example, crease and pollution.
  • 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 authenticity features, are determined unaffected by asymmetrical effects of the value document by adding the measured values of both sensors, whereas the asymmetrical ones 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 in order to detect precisely these asymmetrical effects. In this way, it is possible by means of a single device to test both authenticity features and other value-document-specific features as well as the condition quality of the value document, 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 the case with banknote testing, 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 schematically shows an apparatus according to the invention for testing value documents with two separate sensors
  • Figure 2 shows the device of Figure 1, wherein the two sensors a
  • Figure 3 shows the device of Figure 1, wherein the two sensors a
  • FIG. 1 shows a first exemplary embodiment of a device 1 for testing value documents, in particular banknotes BN.
  • a device 1 for testing value documents in particular banknotes BN.
  • 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 starting from the radiation devices 4 and pointing 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.
  • the detectors 5 6 falling radiation of the value document is detected by the soap oc lenses 6, and the detected radiation readings are transmitted via 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 detected during the time period in which the detector associated with this detector
  • Lighting device 4 was active alone.
  • 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 features characterizing the banknote eg. B. authenticity features
  • the device shown in FIG. 2 differs from the device according to FIG. 1 only in that the two sensors share a detector 5 with an upstream selfoc lens 6.
  • 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.
  • the device shown in FIG. 3 differs from the device according to FIG. 1 in that the two sensors share a lighting device 4.
  • the connecting line 9 between the evaluation device 8 and the illumination device 4 can also be dispensed with in this exemplary embodiment, since the illumination device 4 does not have to be controlled by the evaluation device 8.
  • 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. Via the lines 7, the evaluation device 8 then receives the detected by the two detectors 5

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  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Inspection Of Paper Currency And Valuable Securities (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)

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

Verfahren und Vorrichtung zum Testen von Wertdokumenten Method and device for testing value documents
Die vorliegende Erfindung betrifft ein Verfahren und eine Vorrichtung zum Testen von Wertdokumenten, insbesondere Banknoten, um Wertdokumenteigenschaften zu ermitteln.The present invention relates to a method and a device for testing value documents, in particular banknotes, in order 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-, Transmissionsund/ 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 particular 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 Wertdokumentarten 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.Due to daily use, some value document types 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.
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 Reflexionsverhal- ten zu prüfen, die wegen der besonderen Beleuchtung mittels der vorgenannten optischen Sensoren gerade nicht erfassbar sind, insbesondere also zum Beispiel Knitter und Verschmutzung.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. th to examine because of the special lighting by means of the aforementioned optical sensors just not detectable, in particular so for example, crease and pollution.
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 ermit- telt 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 authenticity features, are determined unaffected by asymmetrical effects of the value document by adding the measured values of both sensors, whereas the asymmetrical ones 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 Messwer- ten 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 ge- rade 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 measuring The difference is formed in order to detect precisely these asymmetrical effects. In this way, it is possible by means of a single device to test both authenticity features and other value-document-specific features as well as the condition quality of the value document, 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 kon- struktive 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 Be- leuchtungseinrichtungen 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 bedeu- tet 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 Beleuchtungseinrich- hingen 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 the case with banknote testing, 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 ausgerichte- ten 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 De- tektoren gelieferten Messwerte einerseits auf summiert 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. 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.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 the measured values supplied by the detectors are summed up on the one hand in the evaluation device and, on the other hand, used to calculate the difference. 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. 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:The invention will now be described by way of example with reference to the accompanying drawings. Show:
Figur 1 schematisch eine erfindungsgemäße Vorrichtung zum Testen von Wertdokumenten mit zwei separaten Sensoren,FIG. 1 schematically shows an apparatus according to the invention for testing value documents with two separate sensors,
Figur 2 die Vorrichtung aus Figur 1, wobei sich die beiden Sensoren einenFigure 2 shows the device of Figure 1, wherein the two sensors a
Detektor teilen, undDivide detector, and
Figur 3 die Vorrichtung aus Figur 1, wobei sich die beiden Sensoren eineFigure 3 shows the device of Figure 1, wherein the two sensors a
Beleuchtungseinrichtung teilen.Sharing 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 exemplary embodiment of a device 1 for testing value documents, 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 Beleuchtungseinrichrungen 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 starting from the radiation devices 4 and pointing 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 Seif oc-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 derje- rügen Zeitspanne erfasst wurden, in der die diesem Detektor zugeordneteIf 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 6 falling radiation of the value document is detected by the soap oc lenses 6, and the detected radiation readings are transmitted via 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 detected during the time period in which the detector associated with this detector
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,Lighting device 4 was active alone. 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. B. authenticity features,
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.Currency, denomination characteristics, etc., are checked 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 Vorrich- tung 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.The device shown in FIG. 2 differs from the device according to FIG. 1 only 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 Aus- führungsbeispiel 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 erfasstenThe device shown in FIG. 3 differs from the device according to FIG. 1 in that the two sensors share a lighting device 4. Optionally, the connecting line 9 between the evaluation device 8 and the illumination device 4 can also be dispensed with in this exemplary 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. Via the lines 7, the evaluation device 8 then receives the detected by the two detectors 5
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 zurück- schliessen zu können. Radiation measured values and performs in this regard an addition and a difference, in order to be able to deduce on the basis of the results obtained, for example, on the authenticity and on the state of the value document.

Claims

P a t e n t a n s p r ü c h e Patent claims
1. Verfahren zum Testen von Wertdokumenten, insbesondere Banknoten (BN), umfassend die Schritte:A method for testing value documents, in particular banknotes (BN), comprising the steps:
- Bestrahlen des Wertdokuments zumindest in einem Bereich des Wertdokuments aus einer ersten Einstrahlrichtung und Messen von Wertdoku- mentstrahlung in dem Wertdokumentbereich aus einer ersten Detektions- richtung sowieIrradiating the value document at least in a region of the value document from a first irradiation direction and measuring value document radiation in the value document region from a first detection direction as well as
- Bestrahlen des Wertdokumentbereichs aus einer zweiten, von der ersten verschiedenen Einstrahlrichtung und/ oder Messen von Wertdokumentstrahlung in dem Wertdokumentbereich aus einer zweiten, von der ersten verschiedenen Detektionsrichtung, gekennzeichnet durch die weiteren SchritteIrradiating the value document area from a second, different from the first irradiation direction and / or measuring value document radiation in the value document area from a second, different from the first detection direction, characterized by the further steps
- Bilden eines ersten Messwerets aus den gemessenen Strahlungen durch Aufsummieren der Strahlungsmesswerte,Forming a first measuring device from the measured radiations by summing the radiation measured values,
- Bilden eines zweiten Messwerets aus den gemessenen Strahlungen durch Differenzbildung der Strahlungsmesswerte,Forming a second measuring device from the measured radiations by subtraction of the radiation measuring values,
- Ableiten einer Aussage über Merkmale des Wertdokuments, welche Echtheit und/ oder Art des Wertdokuments betreffen, mittels des ersten Messwerts, undDeriving a statement about features of the value document which relate to authenticity and / or type of the value document by means of the first measured value, and
- Ableiten einer Aussage über Merkmale des Wertdokuments, welche den Zustand des Wertdokuments betreffen, mittels des zweiten Messwerts.Deriving a statement about features of the value document, which relate to the state of the value document, by means of the second measured value.
2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass die erste und die zweite Einstrahlrichtung verschieden und die erste und die zweite Detektionsrichtung identisch sind, wobei der Schritt des Messens der Wert- dokumentstrahlung aus der identischen Detektionsrichtung mittels desselben Detektors (5), insbesondere mittels eines vorzugsweise linearen Detektorarrays, erfolgt. 2. The method according to claim 1, characterized in that the first and the second Einstrahlrichtung different and the first and the second detection direction are identical, wherein the step of measuring the value document radiation from the identical detection direction by means of the same detector (5), in particular by means of a preferably linear detector array occurs.
3. Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass das Bestrahlen des Wertdokumentbereichs abwechselnd aus der ersten und der zweiten Einstrahlrichtung erfolgt.3. The method according to claim 1 or 2, characterized in that the irradiation of the value-document area takes place alternately from the first and the second irradiation direction.
4. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass die erste und die zweite Einstrahlrichtung identisch und die erste und die zweite Detektionsrichtung verschieden sind, wobei der Schritt des Bestrahlens des Wertdokumentbereichs aus der identischen Einstrahlrichtung mittels derselben Beleuchtungseinrichtung (4), insbesondere mittels eines vorzugsweise linearen LED-Arrays, erfolgt.4. The method according to claim 1, characterized in that the first and the second irradiation direction are identical and the first and second detection directions are different, wherein the step of irradiating the value document area from the identical irradiation direction by means of the same illumination device (4), in particular by means of a preferably linear LED arrays, takes place.
5. Verfahren nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass das Wertdokument transportiert wird, um sukzessive verschiedene Wertdokumentbereiche zu testen.5. The method according to any one of claims 1 to 4, characterized in that the value document is transported in order successively to test different value document areas.
6. Verfahren nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass die erste und die zweite Einstrahlrichtung und/ oder die erste und die zweite Detektionsrichtung symmetrisch zu dem Wertdokumentbereich angeordnet werden.6. The method according to any one of claims 1 to 5, characterized in that the first and the second irradiation direction and / or the first and the second detection direction are arranged symmetrically to the value document area.
7. Vorrichtung zum Testen von Wertdokumenten, insbesondere Banknoten (BN), umfassend:7. Device for testing value documents, in particular banknotes (BN), comprising:
- eine Messzone (3), unda measuring zone (3), and
- eine Sensoreinrichtung zum Messen von Wertdokumenteigenschaften, bestehend aus mindestens zwei aus verschiedenen Richtungen auf diea sensor device for measuring value-document properties, consisting of at least two from different directions on the
Messzone gerichteten optischen Sensoren mit jeweils mindestens einer Beleuchtungseinrichtung (4) und jeweils mindestens einem Detektor (5), wobei die mindestens eine Beleuchtungseinrichtung (4) oder der mindestens eine Detektor (5) den Sensoren gemeinsam zugeordnet sein können, gekennzeichnet durch eine Auswerteeinrichtung (8), die eingerichtet ist, aus Signalen der mindestens zwei Sensoren einen ersten Messwert durch Aufsummieren und einen zweiten Messwert durch Differenzbildung zu bilden, wobei die Auswerteeinrichtung (8) den ersten Messwert auswertet, um eine Aussage über Merkmale des Wertdokuments, welche Echtheit und/ oder Art des Wertdokuments betreffen, abzuleiten, und wobei die Auswerteeinrichtung (8) den zweiten Messwert auswertet, um eine Aussage über Merkmale des Wertdokuments, welche den Zustand des Wertdokuments betreffen, abzuleiten.Measuring zone directed optical sensors, each with at least one illumination device (4) and at least one detector (5), wherein the at least one illumination device (4) or the at least one detector (5) can be assigned to the sensors together, characterized by an evaluation device (8) which is set up to form from signals of the at least two sensors a first measured value by summing up and a second measured value by subtraction, wherein the evaluation device (8) evaluates the first measured value to provide information about features of the value document deriving the authenticity and / or type of the value document, and wherein the evaluation device (8) evaluates the second measured value in order to derive a statement about features of the value document which relate to the state of the value document.
8. Vorrichtung nach Anspruch 7, dadurch gekennzeichnet, dass der mindestens eine Detektor (5) den Sensoren gemeinsam zugeordnet ist.8. Apparatus according to claim 7, characterized in that the at least one detector (5) is associated with the sensors together.
9. Vorrichtung nach Anspruch 7 oder 8, gekennzeichnet durch eine Steuerungseinrichtung zum alternierenden Ansteuern der Beleuchtungseinrichtungen (4) der Sensoren.9. Apparatus according to claim 7 or 8, characterized by a control device for alternately driving the lighting devices (4) of the sensors.
10. Vorrichtung nach Anspruch 7, dadurch gekennzeichnet, dass die mindestens eine Beleuchtungseinrichtung (4) den Sensoren gemeinsam zugeordnet ist.10. The device according to claim 7, characterized in that the at least one illumination device (4) is assigned to the sensors together.
11. Vorrichtung nach einem der Ansprüche 7 bis 10, gekennzeichnet durch eine Transporteinrichtung zum Transportieren der Wertdokumente (BN) durch die Messzone (3).11. Device according to one of claims 7 to 10, characterized by a transport device for transporting the value documents (BN) through the measuring zone (3).
12. Vorrichtung nach einem der Ansprüche 7 bis 11, dadurch gekennzeichnet, dass der mindestens eine Detektor (5) ein Detektorarray, insbesondere ein lineares Detektorarray, ist. 12. Device according to one 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. Vorrichtung nach einem der Ansprüche 7 bis 12, dadurch gekennzeichnet, dass die mindestens eine Beleuchtungseinrichtung (4) ein LED- Array, insbesondere ein lineares LED-Array, ist.13. Device according to one 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. Vorrichtung nach einem der Ansprüche 7 bis 13, gekennzeichnet durch mindestens eine Seif oc-Linse (6) zwischen der Messzone (3) und dem mindestens einen Detektor (5).14. Device according to one of claims 7 to 13, characterized by at least one soap oc lens (6) between the measuring zone (3) and the at least one detector (5).
15. Vorrichtung nach einem der Ansprüche 7 bis 14, dadurch gekennzeich- net, dass die Sensoren relativ zur Messzone (3) symmetrisch zueinander ausgerichtet sind.15. Device according to one of claims 7 to 14, marked thereby, that the sensors are aligned symmetrically to each other relative to the measuring zone (3).
16. Banknotenbearbeitungsmaschine, gekennzeichnet durch eine Vorrichtung zum Testen von Banknoten nach einem der Ansprüche 7 bis 15. 16. A banknote processing machine, characterized by a device for testing banknotes according to one of claims 7 to 15.
EP06791944A 2005-09-09 2006-09-08 Method and device for testing valuable documents Not-in-force EP1927086B1 (en)

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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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ATE441166T1 (en) 2009-09-15
EP1927086B1 (en) 2009-08-26
US7742154B2 (en) 2010-06-22
DE102005042991A1 (en) 2007-03-22

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