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EP2559010B1 - Capteur pour vérification de documents de valeur - Google Patents

Capteur pour vérification de documents de valeur Download PDF

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Publication number
EP2559010B1
EP2559010B1 EP11715177.9A EP11715177A EP2559010B1 EP 2559010 B1 EP2559010 B1 EP 2559010B1 EP 11715177 A EP11715177 A EP 11715177A EP 2559010 B1 EP2559010 B1 EP 2559010B1
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EP
European Patent Office
Prior art keywords
sensor
luminescence
value document
detectors
detection region
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.)
Active
Application number
EP11715177.9A
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German (de)
English (en)
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EP2559010A1 (fr
Inventor
Wolfgang Deckenbach
Martin Clara
Wolfgang Rauscher
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 Currency Technology GmbH
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Giesecke and Devrient Currency Technology GmbH
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Publication of EP2559010A1 publication Critical patent/EP2559010A1/fr
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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
    • G07D7/121—Apparatus characterised by sensor details
    • 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
    • G07D7/1205—Testing spectral properties

Definitions

  • the invention relates to a sensor and a method for checking documents of value and a device which has the sensor.
  • sensors are usually used with which the type of documents of value is determined and / or with which the documents of value are checked for authenticity and / or for their condition.
  • sensors are used, for example, to check bank notes, checks, ID cards, credit cards, check cards, tickets, vouchers and the like.
  • the documents of value are checked in a device for processing documents of value, in which, depending on the properties of the document of value to be checked, one or more different sensors are contained.
  • these are usually moved relative to the sensors, either the document of value being transported past the sensor, as it is, for example, from the US2002 / 0191175 A1 is known, or vice versa.
  • a value document to be checked can have one or more luminescent substances, of which, for example, the decay time and / or spectral properties of the luminescence are checked, as is evident from, for example, the DE10322794 A1 or EP1814058 A1 is known.
  • the luminescent substances of the document of value can be present on the document of value in regions or over the entire surface.
  • To check the decay time of the luminescence it is known to illuminate documents of value with light pulses and, in the dark phase between the light pulses, to detect the luminescence intensity of the document of value at different times after the end of the illumination pulse.
  • the disadvantage here is that, due to the pulsed lighting and due to the relative movement between the sensor and the document of value, a discontinuous check of the document of value is carried out. This is because the dark phases lead to a periodic interruption of the optical excitation of the document of value, so that the luminescence is not checked at regular intervals along the document of value.
  • One object of the present invention is to provide a sensor for checking documents of value with which the decay time of a luminescence of the document of value can be checked in a large value range of decay times even at low movement speeds.
  • the sensor according to the invention is designed to check a value document present in a measuring plane of the sensor.
  • the value document and the sensor are moved relative to one another in such a way that the value document moves along a direction of movement relative to the sensor.
  • the value document is usually transported along or past the stationary sensor along the direction of movement.
  • the sensor can also be transported in relation to the stationary value document, or both can be transported.
  • the sensor is set up to check the decay time of a luminescence of the document of value. The decay time is checked based on luminescence signals from detectors of the sensor.
  • the sensor can only be used for checking documents of value transported individually past the sensor, but also for checking a sheet with several documents of value or a continuous material web which has a multiplicity of documents of value along the direction of movement.
  • the sensor is also suitable for checking a web of material made up of documents of value that have not yet been completed in order to check the documents of value as they are being produced.
  • the sensor has an illumination device which is used to illuminate a section of the measuring plane of the sensor in order to illuminate the value document, when it moves relative to the sensor, in this section of the measuring plane with excitation light.
  • the sensor has several detectors for detecting luminescent light, which the value document illuminated with the excitation light emits in different detection areas of the measuring plane when it moves relative to the sensor.
  • the detection areas of the detectors of the sensor are arranged offset from one another along the direction of movement of the document of value.
  • the illuminated section and the detection areas of the detectors are each stationary in the measuring plane of the sensor.
  • the excitation light of the lighting device is designed to excite a luminescence of the document of value to be checked in such a way that the document of value emits luminescent light which can be detected by the detectors.
  • a first of the detectors of the sensor is set up to generate a first luminescence signal of a first detection area which overlaps with the illuminated section in the measuring plane.
  • the first luminescence signal corresponds to the luminescent light detected in the first detection area.
  • a second of the detectors of the sensor is set up to generate a second luminescence signal of a preceding detection area which, viewed along the direction of movement of the document of value, is arranged in front of the first detection area in the measuring plane.
  • the second luminescence signal corresponds to the luminescence light detected in the preceding detection area.
  • the illuminated section preferably has a length that is greater than or equal to the length of the first detection region.
  • the sensor preferably also has a third detector which is set up to generate a third luminescence signal of a subsequent detection area.
  • the subsequent detection area viewed along the direction of movement, is arranged after the first detection area in the measuring plane.
  • the third luminescence signal corresponds to the luminescence light detected in the subsequent detection area.
  • the third detector enables the sensor to more accurately determine long decay times.
  • the sensor can also be implemented without the third detector.
  • the subsequent detection area viewed along the direction of movement, is arranged after the first detection area to the extent that it does not overlap with the illuminated section of the measurement plane.
  • the illuminated section of the measurement plane is continuously illuminated and the luminescent light of the value document is continuously detected by the detectors at the same time as the illumination.
  • the value document can be checked without interruptions, in contrast to a check with pulsed lighting and detection with a time delay.
  • a spectral one Arranged filter that blocks the excitation light of the lighting device so that the excitation light scattered on the value document is not also detected.
  • the sensor can also have one or more further detectors, each of which is set up to generate a further luminescence signal from a further detection area.
  • the further detection area or areas viewed along the direction of movement of the document of value, are arranged after the preceding detection area and in front of the first detection area in the measuring plane.
  • the luminescence signals from the other detectors can also be used to check the decay time.
  • the ratio of the luminescence signal from one of the further detectors to the first luminescence signal can be formed. It is advantageous to also use the luminescence signal from one of these further detectors to check the decay time, since this enables a more precise check or determination of the decay time.
  • the first, the second and optionally the further detectors and optionally the third detector can be formed, for example, by a one- or two-dimensional photodetector array.
  • the sensor is set up so that, under certain conditions, the second luminescence signal and the luminescence signal of at least one of the other detectors of the sensor are used to check the decay time of the luminescence of the document of value.
  • This other detector whose luminescence signal is used together with the second luminescence signal, is, for example, the first detector or one of the above-mentioned further detectors of the sensor.
  • the conditions under which the second luminescence signal and the luminescence signal of the other detector are used to check the decay time can be predetermined.
  • the conditions for the second luminescence signal and the luminescence signal of the other detector to be used to check the decay time can include measurement conditions for checking the value document and / or properties of the value document to be checked itself, e.g. the type of value document.
  • the second luminescence signal and at least the luminescence signal of one of the other detectors of the sensor can be used to check the decay time, in particular the second and the first Luminescence signal or the second and the luminescence signal of at least one of the further detectors.
  • the selection of those luminescence signals, on the basis of which the decay time is checked, can take place quasi online, e.g. on the basis of information that is only determined in the context of a check of the value document.
  • the sensor is preferably set up to check the decay time of the luminescence of the document of value based on the first and the second luminescence signal.
  • the sensor can be configured to check the decay time either based on the first and the second luminescence signal or based on the first and the third luminescence signal.
  • the selection of the first and second or the first and third luminescence signal can be made as a function of the measurement conditions and / or as a function of the properties of the document of value to be checked.
  • the sensor can also be set up to measure the decay time of the luminescence of the value document either based on the first and the second luminescence signal or based on the to check the first and the third luminescence signal or based on the first and the second and the third luminescence signal.
  • Information about the speed of movement of the document of value relative to the sensor can be made available to the sensor.
  • the speed of movement of the document of value can be set in the sensor.
  • the information about the speed of movement used when checking the document of value can also be supplied to the sensor from outside, e.g. through the device in which the sensor is installed. This can be done before the document of value is checked.
  • the sensor can also, quasi online, receive the actual speed of movement or a movement cycle of the document of value to be checked, e.g. from the device which also controls the movement of the document of value.
  • the movement speed of the value document can be determined from the movement of the value documents with the aid of one or more light barriers.
  • the light barriers can be arranged in the device along the transport path of the document of value before and / or after the sensor.
  • the speed of movement can be determined from the time interval between the signals of two light barriers which are arranged at a certain distance along the transport path, e.g. based on the time interval between the edges of the value document or another structure of the signals.
  • the speed of movement can, however, also be determined mechanically, e.g. with the aid of a wheel that is moved along with the transport system, the document of value, the sheet or the material web.
  • the sensor according to the invention can, however, also itself be designed to determine the speed of movement of the documents of value.
  • one or more light barriers can be placed in the sensor for this purpose be integrated.
  • the sensor has a light barrier along the transport path in front of the detection areas of the detectors, the luminescence signals of which the sensor uses to check the decay time, and a light barrier after this.
  • the movement speed can then be determined from the time distance between the value document edges or another structure of the light barrier signals.
  • the speed of movement can also be determined from the signal from a single light barrier of the sensor.
  • the speed of movement of the document of value can, however, also be determined from the luminescence signals that the sensor detects.
  • the speed of movement can be determined by comparing the luminescence signals that have been detected by at least two of the detectors as a function of time, for example by comparing the luminescence signals of the first and second detectors.
  • the comparison provides the time interval between the luminescence signals with which the luminescence signals are detected due to the local offset of the detectors along the direction of movement.
  • the time interval between certain structures of the luminescence signal or the rise or fall of the detected luminescence signals at the front or rear edge of the document of value can be used.
  • the speed of movement of the respective document of value can be determined from the determined time interval and the known spatial offset of the detectors along the transport direction. If the length of the document of value or the length of a structure of the document of value are known, the speed of movement can also be determined from the luminescence signal of a single one of the detectors of the sensor.
  • the senor is set up so that the selection of the luminescence signals that are used to check the decay time of the luminescence is made as a function of the movement speed at which the value document and the sensor are moved relative to one another when checking the value document.
  • the sensor is set up to check the decay time of the luminescence based on the first and the second luminescence signal below a first speed threshold of the movement speed.
  • the decay time of the luminescence can be checked based on the first and the third luminescence signal, the second speed threshold being greater than or equal to the first speed threshold.
  • the decay time of the luminescence can be checked between the first and the second speed threshold based on the first, the second and the third luminescence signal.
  • the sensor forms, for example, the ratio of the second and the first luminescence signal and / or the ratio of the third and the first luminescence signal.
  • the respective ratio can, for example, be compared with one or more thresholds in order to check whether the decay time is below or above a certain time or is within a certain time window.
  • the first detector has a spectral sensitivity that differs from the spectral sensitivity of the second detector and from the spectral sensitivity of the third detector.
  • the spectral sensitivity of the first detector differs from that of the second and third detectors in such a way that an additional emission light of a document of value to be checked is contained in another
  • the spectral range lies as the luminescent light, the decay time of which is checked by the sensor, can be detected either by the first detector or by both the second and the third detector.
  • the additional emission light can lie in a longer-wave or in a shorter-wave spectral range than the luminescent light, the decay time of which is checked.
  • the additional emission light can only be detected with the first detector and the additional emission light cannot be detected by the second and third detectors.
  • the additional emission light can only be detected with the second and the third detector, and the additional emission light cannot be detected with the first detector.
  • different types of detectors can be used, but a different spectral filter can also be used for the first detector than for the second and third detectors.
  • the additional emission light can also be a luminescence of the document of value.
  • the additional emission light for which the sensor is set up to check, can be emission light which is emitted by the same document of value from whose luminescent light the decay time is checked.
  • the additional emission light of a value document area is checked which is outside the value document area in which the value document emits the abovementioned luminescence.
  • the two value document areas of the value document can be separate value document areas or partially overlap. In the latter case, however, the decay time of the luminescence is preferably checked outside of the overlap area.
  • the additional emission light can, however, also be the emission light of other documents of value that differ from those documents of value from whose luminescent light the decay time is checked.
  • the preceding detection area overlaps with the illuminated section in such a way that, when checking the document of value, only a sub-area of the preceding detection area is illuminated with excitation light, this sub-area, viewed along the direction of movement, being arranged at the end of the preceding detection area.
  • the illuminated sub-area of the preceding detection area extends in particular, viewed along the direction of movement, from the center of the preceding detection area or from a location after the middle of the preceding detection area to the end of the preceding detection area.
  • the illuminated sub-area of the preceding detection area preferably comprises between 20% and 50% of the preceding detection area in terms of area.
  • the first detection area overlaps with the illuminated section in the measuring plane in such a way that, when checking the document of value, only a partial area of the first detection area is illuminated with excitation light which, viewed along the direction of movement, is arranged at the beginning of the first detection area.
  • the center of the illuminated section viewed along the direction of movement, is positioned in front of the first detection area.
  • the illuminated sub-area of the first detection area extends, viewed along the direction of movement, from the beginning of the first detection area, preferably to the center of the first detection area. Along the direction of movement there is no overlap with the illumination area from the center of the first detection area to the end of the first detection area in the measuring plane.
  • the first detection area in the measuring plane has the greatest overlap with the illuminated section.
  • the illuminated sub-area of the first detection area preferably comprises at least 30% of the first detection area in terms of area.
  • the first detection area overlaps with the illuminated section in such a way that, when checking the value document, essentially half of the first detection area is illuminated with excitation light.
  • the invention also relates to a device which is set up to use the sensor according to the invention for checking documents of value.
  • the device can be a checking device for value documents, which checks the value documents for their authenticity, a deposit device or a processing machine for value documents, which can check the value documents and, if necessary, sort them.
  • the invention also relates to a method for checking a document of value, with the following steps: the document of value and a sensor, which is set up for checking the document of value, are moved relative to one another for checking the document of value, the document of value moving along a direction of movement relative to the sensor and moved relative to the illuminated section.
  • a section of a measuring plane of the sensor is illuminated by an illumination device, so that the document of value is illuminated with excitation light in the illuminated section when it is moved relative to the sensor and relative to the illuminated section.
  • the sensor has several detectors which detect luminescent light which the document of value illuminated with the excitation light is in emits different detection areas of the measuring plane.
  • the decay time of a luminescence of the document of value is then checked based on the luminescence signals of the detectors.
  • the detection areas of the detectors are arranged offset from one another along the direction of movement of the document of value.
  • a first of the detectors generates a first luminescence signal of a first detection area which overlaps with the illuminated section in the measuring plane
  • a second of the detectors generates a second luminescence signal of a preceding detection area which, viewed along the direction of movement, is in front of the first detection area is arranged in the measuring plane.
  • a third of the detectors can generate a third luminescence signal of a subsequent detection area which, viewed along the direction of movement, is arranged after the first detection area in the measurement plane. Analogous to the other special features of the sensor for which the sensor is set up, corresponding method steps can be carried out in the method according to the invention.
  • the relative movement between the sensor and the document of value to be checked can be carried out by the above-mentioned device.
  • the remaining method steps can be carried out by the sensor described above.
  • the lighting device can be part of the sensor.
  • the decay time can be checked by the sensor itself. Alternatively, the decay time can also be checked outside the sensor.
  • FIG. 1a-c the structure of a sensor 100 for checking documents of value is shown schematically (xz plane).
  • a value document W is moved along a direction of movement T relative to the sensor 100 and passes through a measuring plane E of the sensor 100.
  • the value document plane lies approximately in the measuring plane E of the sensor 100.
  • To check the value document it is through an illuminated section B of the measuring plane E moves in the excitation light of a lighting device 8 of the Sensor 100 hits the measuring plane, cf.
  • Figure 1a The beam path of the excitation light leads from the lighting device 8 via a lens 9 to a beam splitter 6, which deflects a portion of the excitation light and from which the excitation light is directed via a further lens 7 onto the measuring plane E.
  • the excitation light of the lighting device 8 leads to an optical excitation of the luminescence of the document of value W and can be, for example, in the ultraviolet, in the visible or in the infrared spectral range.
  • a lamp, one or more light-emitting diodes or one or more lasers, for example, can be used as the lighting device.
  • the sensor also contains several detectors 1, 2, 3, which can be applied to a common carrier 4, for example.
  • Individual photodiodes or individual phototransistors, for example, can be used as detectors, but a photodetector line or a two-dimensional photodetector array can also be used for this purpose, the individual elements of which form the detectors.
  • Each of the detectors is designed to detect luminescent light from the document of value, which can be in the ultraviolet, visible or infrared spectral range.
  • the detectors can be provided with a spectral filter (not shown) which suppresses the spectral range of the illuminating light and / or only lets through the luminescent light to be detected.
  • the detectors detect the luminescence light emanating from the respective detection area of the respective detector located in the measuring plane E.
  • the first detector 1 detects the luminescence light emanating from a first detection area D1
  • the second detector 2 the luminescence light emanating from a preceding detection area D2, which is arranged in front of the first detection area D1 along the direction of movement T of the document of value
  • the third Detector 3 the luminescent light emanating from a subsequent detection area D3, which, along the direction of movement T of the document of value W, is arranged after the first detection area D1, cf.
  • Figure 1b The luminescent light of the respective detection area D1-D3 is collected by the lens 7, passes the beam splitter 6 and is focused by the lens 5 onto the respective detector 1-3.
  • the first detection area D1 and the preceding detection area D2 are positioned so as to partially overlap with the illuminated portion B.
  • the following detection area D3 lies outside the illuminated section B, cf. Figure 1c .
  • the luminescent light of the document of value W is continuously detected by the detectors 1, 2, 3, for example over the entire document of value W while it is being moved relative to the sensor 100.
  • Figure 2a shows a plan view of the measuring plane E of the sensor 100 (xy plane), from which the relative arrangement of the illuminated section B and the detection areas D1, D2, D3 can be seen.
  • the shape of the illuminated section B and of the detection areas D1, D2, D3 can each be as desired.
  • the shape of the illuminated section B is rectangular and that of the detection areas D1, D2, D3 is circular.
  • the illuminated section B overlaps with the first detection area D1 in an illuminated sub-area D10 of the first detection area D1 and with the preceding detection area D2 in an illuminated sub-area D20 of the preceding detection area D2.
  • the value document W moves through the in Figure 2a
  • the shown section of the measuring plane E along the direction of movement T (x-direction).
  • the detectors 1, 2, 3 continuously detect the luminescence intensity emitted by the value document W, while the value document W moves along the direction of movement T through the measuring plane E of the sensor 100.
  • this continuously detected luminescence intensity L is plotted in each case as a function of the spatial coordinate x parallel to the direction of movement T of the document of value W.
  • the luminescence intensities are standardized to the respective intensity maximum.
  • the one detected by detectors 1, 2, 3 remains in the Figures 3a-d applied luminescence intensity is the same as long as a homogeneously luminescent value document area is moved through the detection areas D1, D2, D3.
  • FIG. 3a-d The detection areas D1-D3 and the illuminated section B are shown at the top in each case at the corresponding x positions.
  • the Figures 3a and 3c show the luminescence intensity for the case of a low movement speed v g of the document of value W
  • the Figures 3b and 3d the case of a high speed of movement v h .
  • the luminescence intensity L of a "slow" luminescent substance is plotted in each case, the luminescence intensity of which has a long decay time ⁇ l
  • the luminescence intensity L of a "fast” luminescent substance the luminescence intensity of which has a short decay time ⁇ k
  • the highest luminescence intensity is detected in the first detection area D1. Whether and how much luminescence intensity can be detected in the preceding and following detection areas D2 and D3 depends on the decay time of the luminescence and the speed of movement of the document of value W.
  • the luminescence signal S2 of the second detector 2 is very low, cf. Figure 4c .
  • the luminescence signals S1 and S3 of the first and third detectors 1, 3 are used to check the decay time of the luminescence.
  • the ratio S3 / S1 can be formed, on the basis of which the decay time of the luminescence can be checked and, if necessary, clearly determined, cf. Figure 5a .
  • the first detector 1 detects a significant luminescence signal S1 and S3, cf.
  • the luminescence signal S2 of the second detector 2 is very low, cf. Figure 4c .
  • the luminescence signals S1 and S3 of the first and third detectors 1, 3 are used to check the decay time of the luminescence.
  • the ratio S3 / S1 can be formed, on the basis of which the decay time of the luminescence can be checked and, if necessary, clearly determined, cf. Figure 5a .
  • the first detector 1 detects a considerable luminescence signal S1, cf. Figure 4a .
  • the luminescence signal S3 of the third detector 3 is, however, negligibly small in this case, cf. Figure 4b .
  • the luminescence signal of the second detector 2 is considerable in this case, cf. Figure 4c .
  • the luminescence signals S1 and S2 of the first and second detectors 1, 2 are used to check the decay time of the luminescence.
  • the ratio S2 / S1 can be formed, on the basis of which the decay time of the luminescence can be checked and, if necessary, clearly determined, cf. Figure 5b .
  • the decay time of the luminescence can also be checked on the basis of all three luminescence signals S1, S2 and S3.
  • a decay time ⁇ which corresponds approximately to the mean value of the decay times ⁇ k and ⁇ l would then produce clear luminescence signals S1, S2, S3 in all three detectors 1, 2 and 3.
  • the decay time ⁇ can be checked, for example, in a certain medium speed range using all three luminescence signals S1, S2 and S3, for example by forming both ratios S3 / S1 and S2 / S1, and at low speeds using the first and second luminescence signals S1, S2.
  • the detectors 1, 2 and 3 can have similar or the same spectral sensitivity. In the following exemplary embodiment, however, the first detector 1 has a different spectral sensitivity than the second detector 2 and the third detector 3, at least their spectral sensitivities are approximately the same. In the common spectral range which all three detectors 1, 2, 3 cover, their spectral sensitivity curve preferably runs at least approximately the same.
  • the different spectral sensitivity of the first detector 1 ensures that the sensor 100, in addition to checking the decay time ⁇ , can also detect an additional emission light of the document of value W, for example the luminescence that is caused by a different luminescent substance than the luminescence of which Decay time ⁇ is checked.
  • the additional emission light is preferably detected in a value document area in which the luminescence, the decay time ⁇ of which is checked, does not occur.
  • a first detector 1 is used, the spectral sensitivity of which covers an additional spectral range which the second 2 and third detectors 3 neither cover.
  • the spectral sensitivity of the first detector 1 extends into a longer-wave spectral range than that of the second 2 and third detectors 3.
  • the first detector 1 detects a clear luminescence signal that corresponds to the additional luminescence intensity in the additional spectral range.
  • the second 2 and third detectors 3 each detect no luminescence signal from a luminescence in this additional spectral range.
  • the emission of the additional emission light is clearly detectable, since this case can be clearly distinguished from all cases in FIGS. 3, 4 and 5. Because there the second 2 or the third detector 3 always also detects a clear luminescence signal.
  • a second 2 and a third detector 3 are used, their respective spectral sensitivity covers an additional spectral range that the first detector 1 does not cover.
  • the spectral sensitivity of the second 2 and third detectors 3 each extends into a longer-wave spectral range than that of the first detector 1.
  • the second 2 and third detector 3 each detect a clear luminescence signal, which is the one in the additional spectral range located additional luminescence intensity corresponds.
  • the first detector 1 does not detect any luminescence signal from a luminescence in this additional spectral range, only the second or the third detector.
  • the emission of the additional emission light is clearly detectable and clearly distinguishable from all cases of the Figures 3 , 4 and 5 . Because in each of the latter cases the first detector 1 detects a clear luminescence signal.
  • Figure 2b shows another embodiment in which the sensor 100 has further detectors n which detect the luminescent light of the illuminated document of value W, which this emits in further detection areas Dn of the measuring plane E when it moves relative to the sensor 100.
  • the further detection areas Dn are arranged, along the direction of movement T, after the preceding detection area D2, but before the first detection area D1.
  • the first, the second, the third and the further detectors 1, 2, 3, n can be formed by a one-dimensional photodetector array in which the detectors are formed on the same substrate, for example. Analogously to the first, second and third detectors, the further detectors generate n further luminescence signals Sn of the further detection areas Dn.
  • the sensor 100 further detectors m which detect the luminescence light of the illuminated document of value W in further detection areas Dm of the measuring plane E.
  • the detection areas Dm are arranged after the first detection area D1 along the direction of movement T.
  • the luminescence signals Sm can also be used to check the decay time of the luminescence.

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  • Facsimile Scanning Arrangements (AREA)

Claims (13)

  1. Capteur (100) destiné à l'examen d'un document de valeur (W) présent dans un plan de mesure (E) du capteur, cependant que, pour l'examen du document de valeur, le document de valeur (W) et le capteur (100) sont déplacés de telle façon relativement l'un à l'autre que le document de valeur (W) se déplace le long d'une direction de déplacement (T) relativement au capteur (100), comprenant :
    - un équipement d'éclairage (8) pour l'éclairage d'une section (B) du plan de mesure (E) du capteur pour éclairer le document de valeur (10) avec de la lumière d'excitation dans la section (B) quand il se déplace relativement au capteur (100), et
    - plusieurs détecteurs (1, 2, 3, n) pour la détection de lumière luminescente que le document de valeur (W) éclairé avec de la lumière d'excitation émet dans différentes zones de détection (D1, D2, D3, Dn) du plan de mesure quand il se déplace relativement au capteur (100), cependant que les zones de détection (D1, D2, D3, Dn) des détecteurs (1, 2, 3, n) sont agencées de manière décalée les unes par rapport aux autres le long d'une direction de déplacement (T) du document de valeur (W),
    et
    et cependant que le capteur (100) est équipé pour vérifier le temps de décroissance d'une luminescence du document de valeur (W) sur la base de signaux de luminescence des détecteurs (1, 2, 3, n), caractérisé en ce que
    - un premier des détecteurs (1) est équipé pour la génération d'un premier signal de luminescence (S1) d'une première zone de détection (D1) qui, dans le plan de mesure (E), se chevauche de telle façon avec la section éclairée (B) que, lors de l'examen du document de valeur, seulement une zone partielle (D10), de la première zone de détection (D1), agencée au début de la première zone de détection (D1) lors d'une observation le long de la direction de déplacement, est éclairée avec de la lumière d'excitation, et
    - un deuxième des détecteurs (2) est équipé pour la génération d'un deuxième signal de luminescence (S2) d'une zone de détection précédente (D2) qui, lors d'une observation le long de la direction de déplacement (T), est agencée dans le plan de mesure (E) avant la première zone de détection (D1), et se chevauche de telle façon dans le plan de mesure avec la section éclairée que, lors de l'examen du document de valeur, seulement une zone partielle (D20), de la zone de détection précédente, agencée à la fin de la zone de détection précédente (D2) lors d'une observation le long de la direction de déplacement, est éclairée avec de la lumière d'excitation.
  2. Capteur selon la revendication 1, caractérisé en ce qu'un troisième des détecteurs (3) du capteur est équipé pour la génération d'un troisième signal de luminescence (S3) d'une zone de détection suivante (D3) qui, lors d'une observation le long de la direction de déplacement (T), est agencée dans le plan de mesure (E) après la première zone de détection (D1).
  3. Capteur selon la revendication 2, caractérisé en ce que le premier détecteur (1) a une sensibilité spectrale qui se différencie de telle façon de la sensibilité spectrale du deuxième détecteur (2) et de la sensibilité spectrale du troisième détecteur (3) qu'une lumière supplémentaire d'émission d'un document de valeur (W) à examiner se trouvant dans une autre zone spectrale que la lumière luminescente peut être détectée soit par le premier détecteur (1), soit respectivement tant par le deuxième détecteur (2) que par le troisième détecteur (3).
  4. Capteur selon la revendication 2 ou 3, caractérisé en ce que le capteur est équipé pour vérifier le temps de décroissance de la luminescence du document de valeur (W) au choix sur la base du premier (S1) et du deuxième signal de luminescence (S2), ou sur la base du premier (S1) et du troisième signal de luminescence (S3).
  5. Capteur selon une des revendications précédentes, caractérisé en ce que le capteur comporte un ou plusieurs autres détecteurs (n) qui sont respectivement équipés pour la génération d'un autre signal de luminescence (Sn) d'une autre zone de détection (Dn), cependant que la ou les autres zones de détection (Dn) sont, lors d'une observation le long de la direction de déplacement (T), agencés dans le plan de mesure (E) après la zone de détection (D2) précédente et avant la première zone de détection (D1).
  6. Capteur selon une des revendications précédentes, caractérisé en ce que le capteur est équipé pour que, sous certaines conditions, le deuxième signal de luminescence (S2) et le signal de luminescence (S1, Sn) d'au moins un des autres détecteurs (1, 2, 3, n, m) du capteur (100) soient utilisés pour la vérification du temps de décroissance de la luminescence du document de valeur.
  7. Capteur selon une des revendications précédentes, caractérisé en ce que le capteur est équipé pour que, pour un document de valeur (W) à examiner pour la luminescence duquel un temps de décroissance inférieur à un temps de décroissance prédéterminé est attendu, le deuxième signal de luminescence (S2) et le signal de luminescence (S1, S3, Sn, Sm) d'au moins un des autres détecteurs (1, 2, 3, n, m) du capteur (100) sont utilisés pour la vérification du temps de décroissance.
  8. Capteur selon une des revendications de 2 à 7, caractérisé en ce que le capteur est équipé pour que le choix des signaux de luminescence (S1, S2, S3) qui sont utilisés pour la vérification du temps de décroissance de la luminescence soit effectué en fonction de la vitesse de déplacement à laquelle le document de valeur (W) et le capteur (100) sont déplacés relativement l'un à l'autre lors de l'examen du document de valeur.
  9. Capteur selon une des revendications précédentes, caractérisé en ce que le capteur est équipé pour vérifier le temps de décroissance de la luminescence du document de valeur (W) sur la base du premier (S1) et du deuxième signal de luminescence (S2).
  10. Capteur selon une des revendications précédentes, caractérisé en ce que la zone partielle (D20) éclairée de la zone précédente de détection (D2) s'étend, lors d'une observation le long de la direction de déplacement (T), du milieu de la zone précédente de détection (D2) ou d'un endroit après le milieu de la zone précédente de détection (D2) jusqu'à la fin de la zone précédente de détection (D2).
  11. Capteur selon une des revendications précédentes, caractérisé en ce que la zone partielle (D10) éclairée de la première zone précédente de détection (D1) s'étend, lors d'une observation le long de la direction de déplacement, au moins du début de la première zone de détection (D1) jusqu'au milieu de la première zone de détection (D1).
  12. Equipement d'examen de documents de valeur avec un capteur selon une ou plusieurs des revendications précédentes.
  13. Procédé d'examen d'un document de valeur, en particulier à l'aide d'un capteur selon une ou plusieurs des revendications de 1 à 11, comprenant les étapes :
    - déplacement d'un document de valeur à examiner, le long d'une direction de déplacement (T) relativement à un capteur équipé pour l'examen du document de valeur, cependant que le document de valeur se déplace le long d'une direction de déplacement (T) relativement au capteur,
    - éclairage d'une section (B) d'un plan de mesure (E) du capteur par un équipement d'éclairage (8), de telle sorte que le document de valeur, lors du déplacement relativement au capteur (100), est éclairé avec de la lumière d'excitation dans la section éclairée (B),
    - détection de lumière luminescente que le document de valeur (W) éclairé avec de la lumière d'excitation émet dans différentes zones de détection (D1, D2, D3) du plan de mesure (E) quand il se déplace relativement au capteur (100), par plusieurs détecteurs, cependant que les zones de détection (D1, D2, D3) des détecteurs sont agencées de manière décalée les unes par rapport aux autres le long de la direction de déplacement (T) du document de valeur, et cependant que
    - un premier des détecteurs (1) génère un premier signal de luminescence (S1) d'une première zone de détection (D1) qui, dans le plan de mesure, se chevauche de telle façon avec la section éclairée (B) que, lors de l'examen du document de valeur, seulement une zone partielle (D10), de la première zone de détection (D1), agencée au début de la première zone de détection (D1) lors d'une observation le long de la direction de déplacement, est éclairée avec de la lumière d'excitation, et
    - un deuxième des détecteurs (2) génère un deuxième signal de luminescence (S2) d'une zone de détection précédente (D2) qui, lors d'une observation le long de la direction de déplacement (T), est agencée dans le plan de mesure avant la première zone de détection (D1), et se chevauche de telle façon dans le plan de mesure avec la section éclairée que, lors de l'examen du document de valeur, seulement une zone partielle (D20), de la zone de détection précédente, agencée à la fin de la zone de détection précédente (D2) lors d'une observation le long de la direction de déplacement, est éclairée avec de la lumière d'excitation,
    - vérification du temps de décroissance d'une luminescence du document de valeur sur la base des signaux de luminescence des détecteurs.
EP11715177.9A 2010-04-14 2011-04-12 Capteur pour vérification de documents de valeur Active EP2559010B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010014912A DE102010014912A1 (de) 2010-04-14 2010-04-14 Sensor zur Prüfung von Wertdokumenten
PCT/EP2011/001849 WO2011128080A1 (fr) 2010-04-14 2011-04-12 Capteur pour vérification de documents de valeur

Publications (2)

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EP2559010A1 EP2559010A1 (fr) 2013-02-20
EP2559010B1 true EP2559010B1 (fr) 2021-08-18

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EP11715177.9A Active EP2559010B1 (fr) 2010-04-14 2011-04-12 Capteur pour vérification de documents de valeur

Country Status (7)

Country Link
EP (1) EP2559010B1 (fr)
CN (1) CN102893309B (fr)
DE (1) DE102010014912A1 (fr)
ES (1) ES2886756T3 (fr)
MX (1) MX2012010028A (fr)
RU (1) RU2549122C2 (fr)
WO (1) WO2011128080A1 (fr)

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EP3133562B1 (fr) * 2014-04-18 2023-02-15 Glory Ltd. Dispositif de détermination de l'authenticité de feuilles de papier et procédé de détermination de l'authenticité de feuilles de papier
JP7111494B2 (ja) 2018-04-05 2022-08-02 グローリー株式会社 光検出センサ、光検出装置、シート類処理装置および光検出方法
DE102018109141A1 (de) * 2018-04-17 2019-10-17 Bundesdruckerei Gmbh Smartphone verifizierbares, leuchtstoffbasiertes Sicherheitsmerkmal und Anordnung zur VerifizierungSmartphone verifizierbares, leuchtstoffbasiertes Sicherheitsmerkmal und Anordnung zur Verifizierung
DE102021000807A1 (de) * 2021-02-16 2022-08-18 Giesecke+Devrient Currency Technology Gmbh Sensor zur Prüfung von Wertdokumenten
EP4295333B1 (fr) * 2021-02-16 2024-11-06 Giesecke+Devrient Currency Technology GmbH Capteur pour le contrôle de la luminescence de documents de valeur

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RU2549122C2 (ru) 2015-04-20
CN102893309B (zh) 2016-08-24
CN102893309A (zh) 2013-01-23
RU2012148171A (ru) 2014-05-20
EP2559010A1 (fr) 2013-02-20
DE102010014912A1 (de) 2011-10-20
MX2012010028A (es) 2012-09-21
WO2011128080A1 (fr) 2011-10-20
ES2886756T3 (es) 2021-12-20

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