EP1064624B1 - Procede pour verifier l'etat d'un dispositif servant a controler un article se presentant sous la forme de feuilles - Google Patents

Procede pour verifier l'etat d'un dispositif servant a controler un article se presentant sous la forme de feuilles Download PDF

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Publication number
EP1064624B1
EP1064624B1 EP00902599A EP00902599A EP1064624B1 EP 1064624 B1 EP1064624 B1 EP 1064624B1 EP 00902599 A EP00902599 A EP 00902599A EP 00902599 A EP00902599 A EP 00902599A EP 1064624 B1 EP1064624 B1 EP 1064624B1
Authority
EP
European Patent Office
Prior art keywords
light
measuring window
filter
measuring
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.)
Expired - Lifetime
Application number
EP00902599A
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German (de)
English (en)
Other versions
EP1064624A1 (fr
Inventor
Achim Philipp
Heinz Hornung
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 EP1064624A1 publication Critical patent/EP1064624A1/fr
Application granted granted Critical
Publication of EP1064624B1 publication Critical patent/EP1064624B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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 invention relates to a method for checking the state of a Device for testing sheet material, the at least one lighting device, has a translucent measuring window and a detector.
  • a device of the type mentioned above is e.g. known from WO98 / 26276.
  • the light emitted by a lighting device passes through a translucent measuring window on the sheet material to be tested. That from Light reflected from the sheet is then detected and evaluated.
  • Measuring window can become dirty during operation. If the measurement window is dirty, e.g. less light from the irradiation device for sheet material to be tested, whereby the measurement signal drops.
  • sheet material cannot be determined whether the weaker measurement signal to contamination of the measuring window or to the condition of the inspecting leaf material. As a result, it is due to the soiling of the measuring window leads to a misjudgment of the test item Leaf crops can come. This will increase the reliability of the Inspection of sheet material impaired.
  • GB-A-2 109 923 discloses an active one Change of electronic amplification in one Banknote checker if the device is dirty.
  • the invention has for its object a method and a device for checking the condition of a testing device for sheet material to propose the finding of with little technical effort contamination affecting the measurement in a measurement window the test device allows. According to the invention the task is accomplished by solved the features specified in the independent claims.
  • the UV light transmitted through the measurement window from a UV filter is filtered so that only a small proportion passes the filter and is passed to a detector. This transmitted through the filter The proportion of UV light is detected and used to determine the degree of contamination of the measurement window evaluated.
  • the evaluation is preferably carried out in such a way that for a clean measurement window a lighting profile is recorded and saved, which with the illumination profile currently obtained from the detected signal is compared. Based on the deviation of the currently recorded Lighting profile from the saved lighting profile can the degree of contamination of the measuring window can be determined. Instead of However, lighting profiles can also integrate the measured values with each other be compared. In both cases, a deviation points to one Contamination of the measuring window.
  • the sensitivity is preferably used to determine the degree of contamination of the detector, for example, by extending the integration time or also the light intensity of the lighting device or also the signal amplification compared to normal operation at the Check of sheet material increased.
  • FIG. 1 shows an example of the principle of operation in a schematic representation for the detection of contamination in a measuring window.
  • the measurement window 2 is used here by a lighting device e.g. of two UV lamps 1 irradiated with UV light 5. That transmitted through the measurement window UV light 5 is filtered by means of a UV filter 3 such that only a small one Portion 6 of the UV light 5 reaches a detector 4. Only this part of UV light is detected and used to determine the degree of contamination of the measurement window evaluated.
  • the current measured value is included a stored reference value compared with a clean measurement window is obtained. The comparison can be based on the integrated Measured values or also based on the recorded lighting profiles in certain cycles, which depend on the operating time.
  • the Evaluation is based only on the UV light portion 6 that passes through the filter 3 and this proportion compared to that of the lighting device emitted UV light 5 is low, for example only a few Percent is preferably the sensitivity of the detector, for example by an extension of the integration time or also the Luminous intensity of the lighting device or the signal amplification to check the status of the measuring window compared to the operation increased when checking the sheet material, which facilitates the evaluation and is improved.
  • Figure 2 shows a device for checking sheet material, in particular banknotes in which, for example, two measuring windows 2 are provided, which are spaced from each other. Every measurement window is here a lighting device 1, e.g. in the form of two UV lamps 1 assigned.
  • the transported between the measuring windows 2 and not here banknote shown is e.g. in the authenticity check on both sides with UV light stimulated, with the light reflected from the banknote on each side is detected by one detector 4 each.
  • banknotes emit when excited by UV light, light in the visible wavelength range, which is one of the criteria for the authenticity of banknotes.
  • a UV filter 3 is arranged in front of the detectors 4, through which the Measurement signal of the banknote is not affected, however, because of the filters 3 the light reflected by the banknote in the visible wavelength range is let through.
  • the status of the measuring windows is checked preferably by irradiating the measuring window 2 on both sides by means of the UV light 5 emitted by the lighting devices 1 in each case UV light 5 transmitted through the measuring window 2 is emitted by the filters 3 filtered such that only a small proportion 6, for example some Percent, is passed to the detectors 4.
  • the one through the filters 3 transmitted portion 6 of the UV light 5 is detected and for determination of the degree of contamination of the measuring window evaluated.
  • these can also be from only one Side are irradiated with UV light, as already related to Figure 1 has been described.

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  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Inspection Of Paper Currency And Valuable Securities (AREA)
  • Continuous Casting (AREA)
  • Manufacture Of Motors, Generators (AREA)
  • Control And Other Processes For Unpacking Of Materials (AREA)

Claims (8)

  1. Procédé pour inspecter l'état d'un dispositif pour contrôler un produit en feuilles, qui comporte au moins un organe d'éclairage, une fenêtre de mesure transparente à la lumière et un détecteur, dans lequel pour déterminer le degré de salissure de la fenêtre de mesure, on réalise les étapes suivantes consistant :
    à éclairer la fenêtre de mesure avec de la lumière ultraviolette,
    à filtrer la lumière ultraviolette transmise par la fenêtre de mesure, de sorte que seule une faible partie de la lumière ultraviolette soit transmise par un filtre de lumière ultraviolette,
    à détecter la lumière ultraviolette transmise par le filtre et
    à comparer la valeur mesurée avec une valeur de référence mise en mémoire.
  2. Procédé selon la revendication 1, caractérisé en ce que, comme valeur de référence on prend et on met en mémoire un profil d'éclairement pour une fenêtre de mesure propre, profil qui est comparé avec le profil d'éclairement obtenu pour l'état actuel de la fenêtre de mesure.
  3. Procédé selon la revendication 1, caractérisé en ce qu'on met en mémoire comme valeur de référence, la valeur de mesure intégrée pour une fenêtre de mesure propre et on la compare avec la valeur de mesure actuelle intégrée.
  4. Procédé selon la revendication 2 ou 3, caractérisé en ce qu'on réalise la comparaison selon des cycles déterminés.
  5. Procédé selon l'une des revendications précédentes, caractérisé en ce que la sensibilité du détecteur ou l'intensité lumineuse de l'organe d'éclairage ou l'amplification du signal pour déterminer le degré de salissure de la fenêtre de mesure est augmentée par comparaison avec le service de contrôle du produit en feuilles.
  6. Dispositif pour mettre en oeuvre le procédé selon l'une des revendications 1 à 5, qui comporte au moins un organe d'éclairage (1), une fenêtre de mesure (2), un filtre (3) et un détecteur (4), caractérisé en ce qu'au moins un organe d'éclairage (1) est disposé d'un côté de la fenêtre de mesure (2), de sorte que la lumière ultraviolette (5) rayonnée par l'organe d'éclairage (1) frappe à travers la fenêtre de mesure (2) un filtre (3) à rayonnement ultraviolet disposé de l'autre côté de la fenêtre de mesure (2) et qui laisse passer seulement une faible partie (6) de la lumière ultraviolette (5) vers le détecteur (4), et en ce que la partie (6) de la lumière ultraviolette (5) transmise par le filtre (3) est captée et évaluée par le détecteur (4) pour déterminer le degré de salissure de la fenêtre de mesure.
  7. Dispositif selon la revendication 6, caractérisé en ce qu'une deuxième fenêtre de mesure (2) est disposée à une distance déterminée de la première fenêtre de mesure (2), de sorte que la lumière ultraviolette (5) rayonnée par le moyen d'éclairage frappe le filtre (3) à lumière ultraviolette à travers les première et deuxième fenêtres de mesure (2), qui laisse passer seulement une faible partie (6) de la lumière ultraviolette (5) vers le détecteur (4), et en ce que la partie (6) de la lumière ultraviolette (5) transmise à travers le filtre (3) à lumière ultraviolette est captée par le détecteur (4) et est évaluée pour déterminer le degré de salissure de la fenêtre de mesure (2).
  8. Dispositif selon la revendication 7, caractérisé en ce qu'un deuxième organe d'éclairage (1) est prévu, en ce que les organes d'éclairage (1) sont disposés de sorte que la lumière ultraviolette (5) rayonnée par les organes d'éclairage (1) frappe à travers les deux fenêtres de mesure (2) chaque fois sur l'un des filtres (3) à lumière ultraviolette associé aux organes d'éclairage (1) et que chacun ne laisse passer qu'une faible partie (6) de la lumière ultraviolette (5) vers chaque fois un détecteur (4) associé au filtre (3), et en ce que la partie (6) de la lumière ultraviolette transmise à chaque fois à travers le filtre (3) à lumière ultraviolette, est captée par les détecteurs (4) et est évaluée pour déterminer le degré de salissure des fenêtres de mesure (2).
EP00902599A 1999-01-18 2000-01-17 Procede pour verifier l'etat d'un dispositif servant a controler un article se presentant sous la forme de feuilles Expired - Lifetime EP1064624B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19901702A DE19901702A1 (de) 1999-01-18 1999-01-18 Verfahren zur Überprüfung des Zustandes einer Vorrichtung zur Prüfung von Blattgut
DE19901702 1999-01-18
PCT/EP2000/000315 WO2000042578A1 (fr) 1999-01-18 2000-01-17 Procede pour verifier l'etat d'un dispositif servant a controler un article se presentant sous la forme de feuilles

Publications (2)

Publication Number Publication Date
EP1064624A1 EP1064624A1 (fr) 2001-01-03
EP1064624B1 true EP1064624B1 (fr) 2002-10-09

Family

ID=7894573

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00902599A Expired - Lifetime EP1064624B1 (fr) 1999-01-18 2000-01-17 Procede pour verifier l'etat d'un dispositif servant a controler un article se presentant sous la forme de feuilles

Country Status (7)

Country Link
US (1) US6472670B1 (fr)
EP (1) EP1064624B1 (fr)
AT (1) ATE225971T1 (fr)
AU (1) AU2437700A (fr)
DE (2) DE19901702A1 (fr)
ES (1) ES2180510T3 (fr)
WO (1) WO2000042578A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013017193A1 (fr) 2011-08-04 2013-02-07 Giesecke & Devrient Gmbh Dispositif capteur d'une machine de traitement de billets de banque

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0028263D0 (en) * 2000-11-20 2001-01-03 Rue De Int Ltd Document handling apparatus
DE10160578A1 (de) * 2001-12-10 2004-02-12 Giesecke & Devrient Gmbh Verfahren und Vorrichtung für die Überprüfung der Echtheit von Blattgut
DE102010055428A1 (de) * 2010-12-21 2012-06-21 Giesecke & Devrient Gmbh Verschmutzungsprüfung des Fensters einer Messvorrichtung zur Prüfung von Blattgut
DE102011116487A1 (de) * 2011-10-20 2013-04-25 Giesecke & Devrient Gmbh Verschmutzungsprüfung des Fensters einer Messvorrichtung
WO2024020305A2 (fr) * 2022-07-18 2024-01-25 Siemens Healthcare Diagnostics Inc. Analyseur doté d'un écran transparent pour protéger un système d'imagerie

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Publication number Priority date Publication date Assignee Title
US3755674A (en) * 1972-03-09 1973-08-28 Columbia Res Corp Method of detecting pinhole defects in sheet material
US4114804A (en) 1976-08-04 1978-09-19 Brandt-Pra, Inc. Counterfeit detection means for paper counting
CH622369A5 (fr) * 1978-04-18 1981-03-31 Radioelectrique Comp Ind
JPS57113351A (en) * 1980-11-19 1982-07-14 Apuraido Kuromatogurafuii Syst Detector for compounds separated with chromatography apparatus
US4560874A (en) * 1981-06-02 1985-12-24 Santa Barbara Research Center Reference channel for sensing optical contamination
AU556102B2 (en) * 1981-10-22 1986-10-23 Cubic Western Data Currency note validator
GB2109923B (en) 1981-11-13 1985-05-22 De La Rue Syst Optical scanner
DE3816943A1 (de) * 1988-05-18 1989-11-30 Nixdorf Computer Ag Verfahren zum pruefen von blattmaterial
DE4022020A1 (de) * 1990-07-11 1992-01-16 Gao Ges Automation Org Vorrichtung und verfahren zur pruefung von dokumenten
US5578828A (en) * 1994-11-15 1996-11-26 General Electric Company Flame sensor window coating compensation
DE19651101A1 (de) * 1996-12-09 1998-06-10 Giesecke & Devrient Gmbh Vorrichtung und Verfahren zur Detektion von fluoreszentem und phosphoreszentem Licht
US5812270A (en) * 1997-09-17 1998-09-22 Ircon, Inc. Window contamination detector

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013017193A1 (fr) 2011-08-04 2013-02-07 Giesecke & Devrient Gmbh Dispositif capteur d'une machine de traitement de billets de banque
DE102011109400A1 (de) 2011-08-04 2013-02-07 Giesecke & Devrient Gmbh Sensoreinrichtung in einer Banknotenbearbeitungsmaschine
US9004257B2 (en) 2011-08-04 2015-04-14 Giesecke & Devrient Gmbh Sensor device in a bank note processing machine

Also Published As

Publication number Publication date
US6472670B1 (en) 2002-10-29
EP1064624A1 (fr) 2001-01-03
DE50000614D1 (de) 2002-11-14
ES2180510T3 (es) 2003-02-16
ATE225971T1 (de) 2002-10-15
AU2437700A (en) 2000-08-01
DE19901702A1 (de) 2000-07-20
WO2000042578A1 (fr) 2000-07-20

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