CN102893309B - Sensor for verifying valuable file - Google Patents
Sensor for verifying valuable file Download PDFInfo
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- CN102893309B CN102893309B CN201180024229.3A CN201180024229A CN102893309B CN 102893309 B CN102893309 B CN 102893309B CN 201180024229 A CN201180024229 A CN 201180024229A CN 102893309 B CN102893309 B CN 102893309B
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- 230000033001 locomotion Effects 0.000 claims abstract description 93
- 238000005286 illumination Methods 0.000 claims abstract description 41
- 230000003595 spectral effect Effects 0.000 claims description 38
- 238000007689 inspection Methods 0.000 claims description 27
- 238000001514 detection method Methods 0.000 claims description 26
- 230000004044 response Effects 0.000 claims description 17
- 230000003287 optical effect Effects 0.000 claims description 12
- 238000005259 measurement Methods 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 7
- 230000033228 biological regulation Effects 0.000 claims description 4
- 238000001228 spectrum Methods 0.000 claims description 4
- 239000000523 sample Substances 0.000 abstract description 5
- 230000006870 function Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 230000004048 modification Effects 0.000 description 5
- 238000012986 modification Methods 0.000 description 5
- 230000008859 change Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 238000001917 fluorescence detection Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 240000001439 Opuntia Species 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
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
- 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
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- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Inspection Of Paper Currency And Valuable Securities (AREA)
- Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
- Facsimile Scanning Arrangements (AREA)
Abstract
The present invention relates to the sensor of a kind of verifying valuable file, value document is relative to sensor movement.Sensor is set to, based on the fluorescence signal of multiple detectors, and the die-away time of verifying valuable file fluorescence.Sensor has for illuminating the lighting device of value document and multiple detector with exciting light, and for continuous probe fluorescence, this fluorescence is sent in the different detecting areas of arrangement that offset one from another along the value document direction of motion by illuminated value document.First detector of sensor is provided for producing the first fluorescence signal of the first detecting area, first detecting area is overlapping with the section of illumination in measuring plane, and the second detector of sensor is provided for producing at the second fluorescence signal of detecting area above, this detecting area is observed along the direction of motion of value document before being in the first detecting area in measuring plane.
Description
Technical field
The present invention relates to a kind of sensor for verifying valuable file and method and one has this
The equipment of sensor.
Background technology
Generally use sensor check value document, determine the type of value document by them, and/or
Authenticity and/or its state by they verifying valuable files.This sensor is such as used for checking paper money
Ticket, check, certificate, credit card, cheque card, ticket, reward voucher etc..Value document is at value document
In processing equipment, inspection, according to value document characteristic to be checked, comprises one or more difference in equipment
Sensor.For verifying valuable file, they are commonly angled relative to sensor movement, wherein, or have valency
File is conveyed through by sensor, or vice versa.
Value document to be checked can have declining of one or more fluorescent materials, the most such as inspection fluorescence
Subtract time and/or spectral characteristic.The fluorescent material of value document may reside in the local of value document or whole
On individual area.In order to check the die-away time of fluorescence, it is known that use light pulsing light value document, and
Dark phase between light pulse, the value document fluorescence that detection bright pulse terminates rear different time is strong
Degree.Shortcoming here is, due to the relative fortune between pulsed illumination and sensor with value document
Dynamic, the inspection of value document is carried out by phased manner.Because dark phase causes value document optical excitation
Periodic interruptions, so just not carrying out fluorescent inspection at spacing intervals along value document.
It is furthermore well known that value document to be checked illuminates with exciting light in a position of its transport path,
And by the detector inspection being arranged on having with a certain distance from lighting device on transport path follow-up location
Survey the fluorescence of value document.If here employing two-dimensional image sensor is as detector, then by fluorescence edge
Value document direction of motion decay spatially, it may be determined that the die-away time of value document fluorescence.?
It is a disadvantage here that, in the case of value document movement velocity is relatively low, use this method can only determine have
Number range die-away time of limit.
Summary of the invention
The technical problem to be solved is to provide the sensor of a kind of verifying valuable file, with it
Also can be the declining of verifying valuable file fluorescence in bigger die-away time number range when movement velocity is relatively low
Subtract the time.
This technical problem is solved by the technical theme of independent claims.Illustrate in the dependent claims
Favourable the developing further and design of the present invention.
By sensor of the invention be designed for check sensor measurement graphic memory value document.
For verifying valuable file, value document moves relative to each other with sensor, makes value document along the side of moving
To relative to sensor movement.Here, value document generally along the direction of motion by static sensor
Carry along it or through it.But alternately, sensor can also be defeated relative to static value document
Send, or both can carry.Sensor is provided for the fluorescence decay time of verifying valuable file.?
Here, based on the fluorescence signal of sensor detector, die-away time is checked.Sensor can only use
The value document that sensor is other it is conveyed through one by one but it also may inspection includes multiple value document in inspection
Paper or there is the continuous web of multiple value document along the direction of motion.Such as sensor is also applied for inspection
Test the web being made up of the value document not yet completed, in order that in value document production process just
Checked.
Sensor has lighting device, and it measures a section of plane for illumination sensor, has made valency literary composition
Part is when it is relative to sensor movement, and be excited in the described section measuring plane optical illumination.Additionally,
Sensor has the detector of multiple detection fluorescence, and fluorescence is worked as its phase by the value document illuminated with exciting light
For sending at the different detecting areas measuring plane during sensor movement.The detecting area of the detector of sensor
The direction of motion along value document offsets one from another arrangement.The section of illumination and the detecting area of detector position respectively
Put in the measurement plane being securely in sensor.The exciting light of lighting device is designed for so exciting and wants
The fluorescence of the value document of inspection, makes value document launch the fluorescence that can be detected by detector.
First detector of sensor is provided for producing the first fluorescence signal of the first detecting area, and first visits
Survey district overlapping with the section of illumination in measuring plane.Described first fluorescence signal is equivalent in the first detection
The fluorescence of detection in district.Second detector of sensor is provided for producing at the second of detecting area above
Fluorescence signal, this detecting area is observed along the value document direction of motion and is in the first detection in measuring plane
Qu Qian.Described second fluorescence signal is equivalent at the described fluorescence of detection in detecting area above.Along fortune
Dynamic direction is observed, and the length of the section of illumination is preferably greater than or equal to the length of the first detecting area.
Additionally, sensor preferably also has the 3rd detector, it is provided for producing detecting area subsequently
3rd fluorescence signal.This detecting area subsequently is observed along the direction of motion and is in the first detection in measuring plane
Qu Hou.Described 3rd fluorescence signal is equivalent to the fluorescence of detection in detecting area subsequently.3rd detector
Allow sensor can determine long die-away time more accurately.But sensor may be designed in does not has the 3rd
Detector.By a kind of embodiment, described detecting area subsequently is observed along the direction of motion and is in the first detector
It is the most remote afterwards, so that it is not overlapping with the illumination section measuring plane.
For verifying valuable file, flat illumination section is measured in continuous illumination, and while illumination by
The fluorescence of detector continuous probe value document.Thus, with stagger spy by pulsed illumination with for this time
The inspection surveyed is contrary, can verifying valuable file incessantly.Spectral filtering is the most generally set
Device, it stop lighting device exciting light, in order to will not together detect be scattered on value document swash
Luminous.
Additionally, sensor can also have one or more other detector, they are respectively arranged to
Produce another fluorescence signal of another detecting area.The one or more other detecting area is along there being valency
The file direction of motion observe measure in plane be in described after detecting area above and the first detecting area
Before.Alternatively it is also possible to be used for checking die-away time by the fluorescence signal of described other detector.For
The ratio of this fluorescence signal that can set up one of other detector the most respectively and the first fluorescence signal is closed
System.Also it is favourable for being used for the fluorescence signal of one of other detector checking die-away time, because serving as reasons
This can check more accurately or determine die-away time.First, second and the most other detector with
And the 3rd detector can such as be consisted of one-dimensional or two-dimentional photodetector array if desired.
Sensor is set to, use under certain conditions the second fluorescence signal and sensor at least one its
The die-away time of the fluorescence signal verifying valuable file fluorescence of its detector.Other its fluorescence signal described
The detector being used in conjunction with the second fluorescence signal, the e.g. first detector or sensor above-mentioned additionally
One of detector.Can the most clearly give the fluorescence signal of the second fluorescence signal He other detector
It is used in the condition of inspection die-away time.
But sensor it can also be provided that, these conditions can be adjusted after sensor is devoted oneself to work.Use
The fluorescence signal of the second fluorescence signal and other detector checks the condition of die-away time, can include inspection
The measuring condition of value document and/or the characteristic of value document to be checked itself, the class of such as value document
Type.Such as, for this value document that expection die-away time of its fluorescence is shorter than the die-away time of regulation,
The fluorescence signal of the second fluorescence signal and at least one of other detector of sensor can be used, especially
Second and first fluorescence signal, or second and other detector at least one fluorescence signal check
Die-away time.The selection of fluorescence signal being based on inspection die-away time, to a certain extent can be
Line is carried out, such as by the information only just known in the range of value document inspection.
Preferably, sensor is set to, based on the first and second fluorescence signals, and verifying valuable file
The die-away time of fluorescence.This outer sensor may be configured as, by selecting with the first and second fluorescence signals as base
Plinth, or by first and the 3rd based on fluorescence signal, the die-away time described in inspection.Select first and the
Two or select first and the 3rd fluorescence signal, can there is valency literary composition according to measuring condition and/or according to be checked
The characteristic of part is carried out.This outer sensor it can also be provided that, by select with the first and second fluorescence signals be
Basis, or by first and the 3rd based on fluorescence signal, or with first and second and the 3rd fluorescence signal
Based on, the die-away time of verifying valuable file fluorescence.
Can be that sensor provides about value document relative to the information of the movement velocity of sensor.Example
As, the movement velocity of value document can be adjusted in sensor.The relevant use when verifying valuable file
The information of movement velocity, it is also possible to such as by wherein equipped with the equipment of sensor from outside input sensing
Device.This can complete before value document is checked.Sensor can also obtain reality the most online
The movement velocity on border, or such as obtained by the equipment also controlling value document motion and to be checked have valency literary composition
The period of motion of part.The movement velocity of value document can be by one or more diaphragms according to value document
Motion determine.Diaphragm can before in equipment, transport path along value document is located at sensor and/
Or afterwards.Here, movement velocity can be according to two light of the layout that keeps at a certain distance away along transport path
The time interval of signal of door screen determines, such as by the time interval at value document edge or signal other
Structure.But movement velocity can also such as by one by induction system, by value document, pass through
Paper or determined by web synkinetic wheel mechanism formula.
But can also be designed for determining the movement velocity of value document by sensor of the invention itself.Example
As, for this can in sensor integrated one or more diaphragms.Such as, sensor is for this purpose along defeated
Sending path to have a diaphragm before the detecting area of detector, the fluorescence signal of detecting area is used in by sensor
Check die-away time, and an aperture arrangement is after this.Therefore at diaphragm in the case of known,
Can according to value document edge time away from or other structure of diaphragm signal determine movement velocity.There iing valency
When known or a kind of structure of value document the length of file size is known, it is also possible to according to unique sensor
The signal of diaphragm determines movement velocity.
But the fluorescence signal that the movement velocity of value document can also be detected by sensor determines.Such as,
Movement velocity can be believed as the fluorescence of the function detection of time by least two in detector by comparing
Number determine, such as by comparing the fluorescence signal of first and second detector.This offer fluorescence that compares is believed
Number time away from, owing to detector offsets in position along the direction of motion, thus by now away from detection fluorescence letter
Number.Here, can such as use some structure of fluorescence signal time away from, value document leading edge or after
The increase of the fluorescence signal detected at edge or decay.According to measure time away from detector along conveying direction
The space known offsets, it may be determined that the movement velocity of each value document.Known in value document length or have
When the length of a kind of structure of value document is known, it is also possible to according to the fluorescence signal of the unique detector of sensor
Determine movement velocity.
Sensor is particularly arranged to, relative to each other according to value document and sensor when verifying valuable file
The movement velocity of motion selects the fluorescence signal for checking fluorescence decay time.Such as sensor is arranged
For, if less than the First Speed threshold value of movement velocity, then check based on the first and second fluorescence signals
The die-away time of fluorescence.If additionally, being higher than the second speed threshold value of movement velocity, then with first and the 3rd
Checking the die-away time of fluorescence based on fluorescence signal, wherein second speed threshold value is more than or equal to the first speed
Degree threshold value.If additionally, between first and second threshold speed, then can be with first, second, and third
The die-away time of fluorescence is checked based on fluorescence signal.In order to check the die-away time of fluorescence, sensor example
As set up the proportionate relationship of the second and first fluorescence signal and/or the 3rd and first the ratio of fluorescence signal close
System.Each proportionate relationship can such as with one or more threshold ratio relatively, it is therefore an objective to whether inspection die-away time
It is shorter than or exceedes the time of regulation, or be in the time window of regulation.
By a kind of embodiment, the first detector has a kind of spectral response, this spectral response and second
The spectral response of detector and different from the spectral response of the 3rd detector.The spectrum of the first detector
Sensitiveness with second and the 3rd the difference of spectral response of detector be, can or by the first detection
Device, or respectively the most both by second also by the 3rd detector, detect that value document to be checked adds,
It is in from its die-away time by the transmitting light in the different spectral regions of the fluorescence of sensor check.It declines with inspection
The fluorescence subtracting the time is compared, and additional light of launching may be at the spectral regions that wavelength is longer or wavelength is shorter
In.Such as, additional transmitting light with the first detector detection, and can only pass through second and the 3rd detector
All can not separately detect additional transmitting light.Alternately, additional transmitting light can only be respectively with the second He
3rd detector detection, and additional transmitting light can not be detected by the first detector.In order to obtain detection
The spectral response that device is different, it is possible to use different types of detector, but the first detector can also make
With from second and the 3rd different spectral filter of being used of detector.Additional transmitting light can be equally
A kind of fluorescence of value document.
That add, for its inspection, the transmitting light of sensor is set, can be a kind of by checking its fluorescence decay
The transmitting light that the same value document of time sends.Here, such as one region of verifying valuable file
Additional emission light, this region is in outside the value document region that value document sends above-mentioned fluorescence.
The two value document region of value document can be the value document district being separated from each other or partly overlap.
But in the case of the most that, outside overlay region, preferably check the die-away time of fluorescence.But additional sends out
Penetrating light can also be that different other of that value document being examined the die-away time from its fluorescence has valency
The transmitting light of file.
In measuring plane, preferably so overlapping with the section of illumination at detecting area above to work as inspection
When testing value document, only illuminate with exciting light in the subregion of detecting area above, see along the direction of motion
Examine this subregion and be in detecting area terminal above.In the subregion that detecting area above is illuminated
Observe from detecting area center above or from after detecting area center above along the direction of motion
Individual position extends to the terminal at detecting area above.Along the direction of motion, from detecting area above
Top until center, in measuring plane, between detecting area above and the section of illumination, there is not weight
Folded.Preferably, in the subregion that detecting area above is illuminated, it is included in detection above by area
Between the 20% to 50% of district.
By a kind of embodiment, the first detecting area is so overlapping with the section of illumination in measuring plane so that
Only illuminate the subregion of the first detecting area when value document is checked with exciting light, see along the direction of motion
Examining, this subregion is in the top of the first detecting area.Observe along the direction of motion, the center of illumination section
Such as before being positioned at the first detecting area.The subregion that first detecting area is illuminated, sees along the direction of motion
Examine, preferably extend to the center of the first detecting area from the top of the first detecting area.Here, edge
The direction of motion, measure in plane from the center of the first detecting area until from the terminal of the first detecting area not with
Illumination area overlapping.In the present embodiment, in all detecting areas, the first detecting area measure in plane with
Illuminated section is overlapping at most.Preferably, area is pressed at least in the subregion that the first detecting area is illuminated
Including the first detecting area 30%.Especially, the first detecting area is so overlapping with the section of illumination so that
The first detecting area substantially having half when verifying valuable file is excited optical illumination.
Additionally, the present invention relates to a kind of equipment, it be designed for application by the present invention for verifying valuable
The sensor of file.This equipment can be that the value document inspection of a kind of verifying valuable genuineness of document sets
Value document standby, a kind of is stored in equipment or processor, and it can check and can sort if desired valency literary composition
Part.
In addition a kind of method that the invention still further relates to verifying valuable file, comprises the following steps: value document
Move relative to each other, at this for verifying valuable file with the sensor being provided for verifying valuable file
In value document along the direction of motion relative to sensor with relative to illuminated section movement.By illumination
Device illumination sensor measures a section of plane, thus at value document relative to sensor with relative
When illuminated section movement, in the section that this is illuminated, illuminate value document with exciting light.Sensing
Device has the detector of multiple detection fluorescence, and fluorescence is being measured plane not by the value document illuminated with exciting light
Send in same detecting area.Then, based on the fluorescence signal of detector, verifying valuable file glimmering
The die-away time of light.The detecting area of detector offsets one from another arrangement along the direction of motion of value document.Visiting
Surveying in step, the first detector produces the first fluorescence signal of the first detecting area, and the first detecting area is being measured
In plane overlapping with illuminated section, and second glimmering at detecting area above of the second detector generation
Optical signal, this detecting area is observed along the direction of motion before being in the first detecting area in measuring plane.
Additionally, in detection steps, the 3rd detector can produce the 3rd fluorescence letter of detecting area subsequently
Number, this detecting area is observed along the direction of motion after being in the first detecting area in measuring plane.It is similar to pass
The feature that they are designed by other sensor tip of sensor, can implement corresponding in the present inventive method
Method step.
Relative motion between sensor and value document to be checked can be implemented by the said equipment.Its
Remaining method step can be implemented by the sensor.Lighting device can be the part of sensor.
Die-away time can be checked by sensor itself.But alternately, the inspection of die-away time can also be
Sensor external is implemented.
Accompanying drawing explanation
The present invention is illustrated below by accompanying drawing.In the accompanying drawings:
Fig. 1 a-c schematically illustrate sensor and illumination path and illuminate section B (Fig. 1 a, 1c) and with detection
Light path and the structure of detecting area D1, D2, D3 (Fig. 1 b, 1c)；
Fig. 2 a-b represents the illumination section by two kinds of embodiments and spy with the top view of sensor measurement plane
Survey the relative placement in district；
Fig. 3 a-d represents the fluorescence intensity change as the function of the position x along the value document direction of motion
Curve, for the die-away time that two kinds of different movement velocitys are different with two kinds；
When Fig. 4 a-c represents fluorescence signal S1, S2 and S3 of detector D1, D2 and D3 as decay
Between function, for two kinds of different movement velocitys；
Fig. 5 a-b represent the 3rd and first proportionate relationship S3/S1 of fluorescence signal as the letter of die-away time
Proportionate relationship S2/S1 of number (Fig. 5 a) and the second and first fluorescence signal is as the function (figure of die-away time
5b)。
Detailed description of the invention
Fig. 1 a-c schematically illustrates the sensor 100 structure (x-z-plane) for verifying valuable file.There is valency
File W moves and meanwhile through sensor 100 along direction of motion T-phase for sensor 100
Measure plane E.In here value document plane is generally in measurement plane E of sensor 100.For
Verifying valuable file, it moves through the illumination section B measuring plane E, in illumination section B,
The exciting light of the lighting device 8 of sensor 100 is radiated in measurement plane, sees Fig. 1 a.Exciting light
Light path guides optical splitter 6 from lighting device 8 through lens 9, and it makes a part of exciting light turn to and swash
Luminous sensing through another lens 7 from optical splitter 6 measures plane E.The exciting light of lighting device 8 has made
The fluorescence of value document W is gone out by optical excitation, and such as may be at ultraviolet, visible ray or infrared
In the spectral regions of line.Lamp, one or more light emitting diode or one can be such as used as lighting device
Or multiple laser instrument.
This outer sensor is possibly together with multiple detectors 1,2,3, and they can such as be arranged on common support
On 4.Can such as use single photodiode or single phototransistor as detector, but be
This can also use photodetector row or 2 D photoelectric detector array, and their each element is constituted to be visited
Survey device.Each detector is designed for detecting the fluorescence of value document, and it may be at ultraviolet, visible
In light or ultrared spectral regions.Detector can be provided with spectral filter (not shown), and it suppresses illumination
The spectral region of light and/or can only be through fluorescence to be detected.Detector detection is by each of each detector
It is in the fluorescence that the detecting area measured in plane E sends.Therefore the first detector 1 detects by the first detection
The fluorescence that district D1 sends, the second detector 2 detects by the fluorescence sent at detecting area D2 above,
Before detecting area D2 above is in the first detecting area D1 along direction of motion T of value document, and
3rd detector 3 detects the fluorescence sent by detecting area D3 subsequently, and detecting area D3 subsequently is along having
After direction of motion T of value document W is in the first detecting area D1, see Fig. 1 b.Each detecting area D1-D3
Fluorescence assembled by lens 7, through optical splitter 6 and pass through lens 5, focus on each detector 1-3
On.
By value document W moving along direction of motion T, not only it is exactly in illumination section B
That value document district sends fluorescence, and also sends along direction of motion T connected value document district
Fluorescence.First detecting area D1 and orientating as at detecting area D2 above, makes they and illumination section B
Partly overlap.Detecting area D3 subsequently is in outside illumination section B in this example, sees Fig. 1 c.?
During value document W moves relative to sensor 100, the fluorescence of value document W such as has whole
By detector 1,2,3 continuous probe on value document W.
Fig. 2 a represents the top view (x-y plane) of measurement plane E of sensor 100, and thus top view can
To find out the relative placement of illumination section B and detecting area D1, D2, D3.Illumination section B and detection
The shape of district D1, D2, D3 can be arbitrary.The shape of illumination section B is rectangle in this example,
And the shape of detecting area D1, D2, D3 is circular.Section B and the first detecting area D1 is first in illumination
In subregion D10 illuminated for detecting area D1 overlapping, and with at detecting area D2 above in institute
State in subregion D20 illuminated for detecting area D2 above overlapping.Value document W is along moving
Direction T (x direction) moves through the part of measurement plane E represented in Fig. 2 a.
During value document W moves through measurement plane E of sensor 100 along direction of motion T,
The fluorescence intensity that detector 1,2,3 continuous probe is sent by value document W.In Fig. 3 a-d respectively
Mark and draw fluorescence intensity L of continuous probe, as the position being parallel to value document W direction of motion T
The function of coordinate x.Here, fluorescence intensity is standardized by maximum of intensity at that time or scale table
Show.As long as it is desirable that the value document district uniformly sending fluorescence move through detecting area D1, D2,
D3, is the most always to maintain identical by the fluorescence intensity marked and drawed in Fig. 3 a-d of detector 1,2,3 detection.
Additionally, be painted with detecting area D1-D3 and illumination district at corresponding x position respectively above Fig. 3 a-d
Section B.Fig. 3 a and 3c represents movement velocity v at value document WgFluorescence intensity in the case of relatively low,
Fig. 3 b and 3d represents high movement velocity vhIn the case of fluorescence intensity.Fig. 3 a and 3d marks and draws respectively
Fluorescence intensity L of " slowly " fluorescent material, its fluorescence intensity has longer τ die-away timel, at figure
Marking and drawing fluorescence intensity L of " soon " fluorescent material in 3b and 3c respectively, its fluorescence intensity has shorter
τ die-away timek.In the case of all of four kinds, detect the highest fluorescence at the first detecting area D1
Intensity.Above and can detecting area D2 and D3 subsequently detect maybe can detect great
Fluorescence intensity, depends on die-away time and the movement velocity of value document W of fluorescence.
For two kinds of different movement velocitys v in Fig. 4 a-cgAnd vh, represent the glimmering of the first detector 1
The fluorescence signal S3 of optical signal S1, the fluorescence signal S2 of the second detector 2 and the 3rd detector 3 divides
Not and the relation of fluorescence decay time τ.There is τ die-away timel" slowly " fluorescence and harmonic motion speed
vgIn the case of (situation shown in Fig. 3 a), the first detector 1 (the first detecting area D1) and the 3rd detector
3 (detecting area D3 subsequently) detect strong fluorescence signal S1 or S3, see Fig. 4 a and 4b.Otherwise,
The fluorescence signal S2 of the second detector 2 (the detecting area D2 above) is the least, sees Fig. 4 c.This
In the case of, in order to check the die-away time of fluorescence, the fluorescence letter of use first and the 3rd detector 1,3
Number S1 and S3.Can such as set up proportionate relationship S3/S1 for this purpose, can check based on this and
The die-away time of fluorescence can be determined when needed clearly, see Fig. 5 a.
There is τ die-away timel" slowly " fluorescence and high movement velocity vhIn the case of (shown in Fig. 3 d
Situation) and there is τ die-away timek" soon " fluorescence and high movement velocity vhIn the case of (Fig. 3 b institute
Situation about showing), the first detector 1 (the first detecting area D1) and the 3rd detector 3 (detecting area D3 subsequently)
Detect strong fluorescence signal S1 or S3, see Fig. 4 a and 4b.Otherwise, the second detector 2 is (front
The detecting area D2 in face) fluorescence signal S2 the least, see Fig. 4 c.In order to check the die-away time of fluorescence,
The most also use first and fluorescence signal S1 and S3 of the 3rd detector 1,3.For this mesh
, can such as set up proportionate relationship S3/S1, can check based on this and when needed can be clear and definite
Ground determines the die-away time of fluorescence, sees Fig. 5 a.
There is τ die-away timek" soon " fluorescence and harmonic motion speed vgIn the case of (shown in Fig. 3 c
Situation), the first detector 1 (the first detecting area D1) detects strong fluorescence signal S1, sees Fig. 4 a.
But the fluorescence signal S3 of the 3rd detector 3 (detecting area D3 subsequently) is little to neglecting in this case
Slightly, Fig. 4 b is seen.Otherwise, the second detector 2 (the detecting area D2 above) is glimmering in this case
Optical signal S2 is strong, sees Fig. 4 c.In order to check the die-away time of fluorescence, use in this case
One and second fluorescence signal S1 and S2 of detector 1,2.For this purpose it is proposed, ratio of can such as setting up is closed
It is S2/S1, can check and can determine clearly when needed the die-away time of fluorescence based on this,
See Fig. 5 b.
Relatively low or be in two kinds of movement velocitys vgAnd vhBetween middle motion speed in the case of,
Can also be by the die-away time of all of three fluorescence signals S1, S2 and S3 inspection fluorescence.Now example
As about the same in τ die-away timekAnd τlτ die-away time of mean value, at all three detector 1,2
Obvious fluorescence signal S1, S2, S3 is all caused in 3.Such as in certain midrange velocity envelope,
Can be by all of three fluorescence signals S1, S2 and S3 inspection τ die-away time, such as by setting up
Two proportionate relationships S3/S1 and S2/S1, and can be by the first and second fluorescence letters when relatively low velocity
Number S1, S2 inspection.
Detector 1,2 can have similar or identical spectral response with 3.But in following enforcement
In example, the first detector 1 has the spectral response different from the second detector 2 and the 3rd detector 3, the
The spectral response of two detectors 2 and the 3rd detector 3 is the most approximately the same.Visit covering all three
Surveying in the common spectral regions of device 1,2,3, the change of their spectral sensitivity curves preferably at least approximates
Identical.The spectral response different by the first detector 1 can realize, and sensor 100 declines except inspection
Subtract and the additional transmitting light of value document W outside time τ, can also be detected, such as by being different from its die-away time of τ
The fluorescence that the another kind of fluorescent material of the fluorescence being examined causes.Here, preferably when not occurring that it is decayed
Between τ be examined fluorescence value document region in detection add transmitting light.
In the first modification of this embodiment, its spectral response is used to cover the of additional spectral regions
One detector 1, the second detector 2 and the 3rd detector 3 both of which do not cover the spectral regions that this is additional.
Such as, the spectral response of the first detector 1 extends to than the second detector 2 and the 3rd detector
The spectral regions that the spectrum sensitive district wavelength of 3 is longer.In this first modification, the first detector 1 detects
To obvious fluorescence signal, it is corresponding to the Additional fluorescence intensity being in described additional spectral regions.Second
Detector 2 and the 3rd detector 3 the most not by the fluorescence detection in spectral regions additional at this to fluorescence signal.
Can confirm clearly to send additional transmitting light because this situation can be different from clearly Fig. 3,4
With all situations shown in 5.Because the most also having the second detector 2 or the 3rd detector 3 to visit
Measure obvious fluorescence signal.
In the second modification of this embodiment, their spectral response is used to be covered each by the light added
Second detector 2 and the 3rd detector 3 in spectrum district, the first detector 1 does not cover this additional spectral regions.
The spectral response of the such as second detector 2 and the 3rd detector 3 extends to respectively than the first detection
The spectral regions that device 1 wavelength is longer.In this second modification, the second detector 2 and the 3rd detector 3
Separately detecting obvious fluorescence signal, it is strong corresponding to the Additional fluorescence being in described additional spectral regions
Degree.First detector 1 not by the fluorescence detection in spectral regions additional at this to fluorescence signal, only
Two or the 3rd detector detects.In this modification, also can confirm to send additional transmitting light clearly, and
And all situations of Fig. 3,4 and 5 can be different from clearly.Because any the one of these situations later
In the case of Zhong, the first detector 1 detects obvious fluorescence signal.
Fig. 2 b represents another kind of embodiment, and wherein sensor 100 has other detectors n, and they are visited
Survey the fluorescence of the value document W of illumination, when value document moves relative to sensor 100, illumination
Value document W measure plane E other detecting areas Dn in send fluorescence.Described other are visited
After survey district Dn is in detecting area D2 above along direction of motion T, but it is located at the first detecting area D1
Before.First, second, third and other detectors 1,2,3, n can be by one-dimensional light electrical resistivity survey
Surveying device array to constitute, wherein detector designs on the most same substrate.It is similar to first, second He
3rd detector, other detectors n produces other fluorescence signals Sn of other detecting areas Dn.
Similar with the 3rd fluorescence signal, for some measuring condition it may be advantageous that also by fluorescence signal Sn
For checking die-away time, such as set up proportionate relationship Sn/S1 for this.Additionally, sensor 100 is permissible
Having other detectors m, what they detections in other detecting areas Dm measuring plane E illuminated has
The fluorescence of value document W.After these detecting areas Dm is in the first detecting area D1 along direction of motion T.Glimmering
Optical signal Sm can be used for checking the die-away time of fluorescence.
Claims (15)
1. a sensor (100), the value document existed in sensor measurement plane (E) for inspection
(W), wherein, for verifying valuable file (W), value document (W) and sensor (100) phase the most each other
To motion, value document (W) is made to move along the direction of motion (T) relative to sensor (100), described sensor
Including:
-lighting device (8), measures the section (B) of plane (E) for illumination sensor, in order to when there being valency literary composition
When part (W) moves relative to sensor (100), in described section (B), illuminate this value document with exciting light
(W), and
-multiple detectors (1,2,3, n), be used for detecting fluorescence, when illuminate with exciting light have valency literary composition
When part (W) moves relative to sensor (100), the value document (W) of described exciting light illumination is being measured
The different detecting areas (D1, D2, D3, Dn) of plane (E) send described fluorescence, wherein, detector (1,2,
3, detecting area (D1, D2, D3, Dn) n) is along the direction of motion (T) row of offseting one from another of value document (W)
Row,
And wherein, sensor (100) be provided for detector (1,2,3, n) fluorescence signal as base
Plinth, the die-away time of the fluorescence of verifying valuable file (W), is characterized by:
-the first detector (1) is provided for producing first fluorescence signal (S1) of the first detecting area (D1), the
One detecting area (D1) is overlapping with illuminated section (B) in measuring plane (E), and
-the second detector (2) is provided for producing the second fluorescence signal at detecting area (D2) above
(S2), in measuring plane (E), it is in the first detection along the direction of motion (T) observation at detecting area (D2) above
Before district (D1).
2. according to the sensor described in claim 1, it is characterized by, the 3rd detector (3) of sensor
It is provided for producing the 3rd fluorescence signal (S3) of detecting area (D3) subsequently, detecting area (D3) edge subsequently
The direction of motion (T) is observed after being in the first detecting area (D1) in measuring plane (E).
3. according to the sensor described in claim 2, it is characterized by, the first detector (1) has spectrum
Sensitiveness, the spectral response of this spectral response and the second detector (2) and the 3rd detector (3)
Spectral response is different so that or can pass through the first detector (1), or the most both by the second spy
Survey device (2) also by the 3rd detector (3), detect value document (W) to be checked additional, be in glimmering
Transmitting light in the spectral regions that light is different.
4. according to the sensor one of claims 1 to 3 Suo Shu, it is characterized by, described sensor has
One or more other detectors (n), they are respectively arranged to produce the another of another detecting area (Dn)
One fluorescence signal (Sn), wherein, another or other detecting area (Dn) is observed along the direction of motion (T)
It is in described after detecting area (D2) above and before the first detecting area (D1) in measuring plane (E).
5. according to the sensor one of claims 1 to 3 Suo Shu, it is characterized by, described sensor sets
Put for using the second fluorescence signal (S2) and at least the one of sensor (100) under predetermined conditions
Other detector individual (1,2,3, n, m) fluorescence signal (S1, Sn) carry out the glimmering of verifying valuable file (W)
The die-away time of light.
6. according to the sensor one of claims 1 to 3 Suo Shu, it is characterized by, described sensor sets
It is set to, for value document (W) to be checked, when expecting that the die-away time of its fluorescence is shorter than declining of regulation
When subtracting the time, use the second fluorescence signal (S2) and sensor (100) at least one other detector (1,2,
3, n, fluorescence signal (S1, S3, Sn, Sm) m) check die-away time.
7. according to the sensor one of claims 1 to 3 Suo Shu, it is characterized by, described sensor sets
It is set to, the motion moved relative to each other according to value document (W) during verifying valuable file and sensor (100)
Speed selects the fluorescence signal (S1, S2, S3) for checking fluorescence decay time.
8. according to the sensor one of claims 1 to 3 Suo Shu, it is characterized by, described sensor sets
It is set to, based on the first fluorescence signal (S1) and the second fluorescence signal (S2), verifying valuable file (W)
Die-away time of fluorescence.
9. according to the sensor one of claims 1 to 3 Suo Shu, it is characterized by, described sensor sets
It is set to, optionally with the first fluorescence signal (S1) and the second fluorescence signal (S2) or with the first fluorescence letter
Based on number (S1) and the 3rd fluorescence signal (S3), the die-away time of the fluorescence of verifying valuable file (W).
10., according to the sensor one of claims 1 to 3 Suo Shu, it is characterized by, described above
Detecting area (D2) is the most overlapping with described illuminated section (B) so that when verifying valuable file (W) only
Described in the subregion (D20) of detecting area (D2) above with exciting light illumination, observe along the direction of motion,
Described subregion (D20) is in the described terminal at detecting area (D2) above.
11., according to the sensor described in claim 10, is characterized by, described at detecting area (D2) above
Illuminated subregion (D20), observes along the direction of motion, from described detecting area (D2) above
The heart or from a described position behind the center of detecting area (D2) above, extends to before described
The terminal of the detecting area (D2) in face.
12., according to the sensor one of claims 1 to 3 Suo Shu, is characterized by, the first detecting area (D1)
The most overlapping with described illuminated section (B) so that inspection is only shone with exciting light when value document (W)
The subregion (D10) of bright first detecting area (D1), observes along the direction of motion, this first detecting area (D1)
Subregion (D10) be in the first detecting area (D1) top.
13., according to the sensor described in claim 12, is characterized by, described first detecting area (D1)
Illuminated subregion (D10), observes along the direction of motion, at least from the top one of the first detecting area (D1)
Directly extend to the center of the first detecting area (D1).
The equipment of 14. 1 kinds of verifying valuable files (W), it is characterised in that this equipment has according to aforementioned
Sensor according to any one of claim.
15. 1 kinds by according to the sensor check value document according to any one of claim 1-13
(W) method, comprises the following steps:
-value document (W) to be checked along the direction of motion (T) relative to being provided for verifying valuable file
(W) sensor movement, wherein, value document (W) along the direction of motion (T) relative to sensor movement,
-by the section (B) of lighting device (8) illumination sensor measurement plane (E), therefore value document (W)
Be excited in this illuminated section (B) optical illumination when moving relative to sensor (100),
-detect fluorescence by multiple detectors, when the value document (W) illuminated with exciting light is relative to biography
During sensor (100) motion, the value document (W) that described fluorescence is illuminated by described exciting light is measuring plane
(E) different detecting area (D1, D2, D3) sends, wherein, the detecting area of detector (D1, D2,
D3) direction of motion (T) along value document (W) offsets one from another arrangement, and wherein, the first detector (1)
Produce first fluorescence signal (S1) of the first detecting area (D1), the first detecting area (D1) measure in plane with
Illuminated section (B) is overlapping, and the second detector (2) produces at the second of detecting area (D2) above
Fluorescence signal (S2), described observation along the direction of motion (T) at detecting area (D2) above is located measuring in plane
Before the first detecting area (D1),
-based on the fluorescence signal of detector, the die-away time of the fluorescence of verifying valuable file (W).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102010014912.8 | 2010-04-14 | ||
| DE102010014912A DE102010014912A1 (en) | 2010-04-14 | 2010-04-14 | Sensor for checking value documents |
| PCT/EP2011/001849 WO2011128080A1 (en) | 2010-04-14 | 2011-04-12 | Sensor for verifying value documents |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102893309A CN102893309A (en) | 2013-01-23 |
| CN102893309B true CN102893309B (en) | 2016-08-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201180024229.3A Active CN102893309B (en) | 2010-04-14 | 2011-04-12 | Sensor for verifying valuable file |
Country Status (7)
| Country | Link |
|---|---|
| EP (1) | EP2559010B1 (en) |
| CN (1) | CN102893309B (en) |
| DE (1) | DE102010014912A1 (en) |
| ES (1) | ES2886756T3 (en) |
| MX (1) | MX2012010028A (en) |
| RU (1) | RU2549122C2 (en) |
| WO (1) | WO2011128080A1 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6247747B2 (en) * | 2014-04-18 | 2017-12-13 | グローリー株式会社 | Paper sheet authenticity determination device and paper sheet authenticity determination method |
| JP7111494B2 (en) | 2018-04-05 | 2022-08-02 | グローリー株式会社 | Light detection sensor, light detection device, sheet processing device, and light detection method |
| DE102018109141A1 (en) * | 2018-04-17 | 2019-10-17 | Bundesdruckerei Gmbh | Smartphone-verifiable, fluorescent-based security feature and device for verification Smartcard-verifiable, fluorescent-based security feature and arrangement for verification |
| DE102021000807A1 (en) * | 2021-02-16 | 2022-08-18 | Giesecke+Devrient Currency Technology Gmbh | Sensor for checking documents of value |
| WO2022174979A1 (en) * | 2021-02-16 | 2022-08-25 | Giesecke+Devrient Currency Technology Gmbh | Sensor for verifying the luminescence of value documents |
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- 2011-04-12 RU RU2012148171/08A patent/RU2549122C2/en active
- 2011-04-12 WO PCT/EP2011/001849 patent/WO2011128080A1/en active Application Filing
- 2011-04-12 CN CN201180024229.3A patent/CN102893309B/en active Active
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Also Published As
| Publication number | Publication date |
|---|---|
| RU2012148171A (en) | 2014-05-20 |
| DE102010014912A1 (en) | 2011-10-20 |
| EP2559010B1 (en) | 2021-08-18 |
| WO2011128080A1 (en) | 2011-10-20 |
| RU2549122C2 (en) | 2015-04-20 |
| MX2012010028A (en) | 2012-09-21 |
| CN102893309A (en) | 2013-01-23 |
| ES2886756T3 (en) | 2021-12-20 |
| EP2559010A1 (en) | 2013-02-20 |
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