CN104215613B - Sheet paper identification device and optical sensor arrangement - Google Patents
Sheet paper identification device and optical sensor arrangement Download PDFInfo
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- CN104215613B CN104215613B CN201410242406.0A CN201410242406A CN104215613B CN 104215613 B CN104215613 B CN 104215613B CN 201410242406 A CN201410242406 A CN 201410242406A CN 104215613 B CN104215613 B CN 104215613B
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Abstract
The present invention provides a kind of sheet paper identification device and optical sensor arrangement, to improve the accuracy of detection for the fluorescence that paper is sent.The sheet paper identification device of the present invention possesses optical sensor portion and identification part.The optical sensor portion possesses：Transport path；Light source portion；Optical splitter, it will be divided along the fluorescence in 1st direction vertical with conveying direction along 2nd direction vertical with the 1st direction；Light accepting part, have along the 1st direction and the 2nd direction with multiple photo detectors of grid-like arrangement；And signal processing part, the fluorescence spectrophotometer picture signal of output and the light splitting photophase of the fluorescence.The identification part carries out the identification of the paper based on the fluorescence spectrophotometer picture signal exported from the optical sensor portion.
Description
Technical field
The present invention relates to as paper as bank note or marketable securities etc., especially to including the image for sending fluorescence
The sheet paper identification device that the paper of (following, also known as " fluorescence radiation image ") is identified.
Background technology
In order to which the paper comprising fluorescence radiation image is identified, such as the optics described in using patent document 1
The device that line sensor device is detected as the pattern (pattern) of the image to paper.The optical line of patent document 1
Sensor device is via R, G, B by the paper irradiating ultraviolet light to detection object by the fluorescence sent from paper
Each photo detector of each colour filter sensor assembly receives, and thus the pattern of the image of the fluorescence of each color is detected
Device.The pattern of the image of the fluorescence of each color detected by optical line sensor device is used in the identification of paper.
Patent document 1：JP 2012-68731 publications
But being used for the fluorescent material in paper has a various materials, the color of fluorescence is also various.Example
Such as, there is the material that fluorescence is sent with the visible ray of the different monochromatic wavelength of red, green, yellow, blueness etc., also will be more
The visible ray that the wavelength of individual color is obtained by mixing sends the material of fluorescence.In addition, there is fluorescent material to be made up of organic matter
Material, the material for thering is the inorganic matter by terres rares etc. to form, it is different to send the wavelength of fluorescence, spatial distribution.It is for example, even if glimmering
The peak wavelength of light is equal, also because of the difference of organic matter and inorganic matter and the spatial distribution of fluorescence is different.Typically, organic matter is glimmering
The spatial distribution of stimulative substance is wide and gentle, the spectrum of the fluorescent material of inorganic matter it is narrow and drastically.
Therefore, in the conventional optical line sensor device described in patent document 1, it is difficult to will be above-mentioned various
The difference of the color for sending fluorescence distinguish in detail to detect, not enough filled in terms of the accuracy of detection for the fluorescence that paper is sent
Point, it is not abundant enough in terms of the accuracy of identification of the paper of the difference based on fluorescence.
The content of the invention
It is an object of the invention to provide a kind of accuracy of detection for improving the fluorescence that paper is sent and improve the knowledge of paper
The sheet paper identification device of other precision.
In order to solve the above problems, sheet paper identification device of the invention possesses described in optical sensor portion and progress
The identification part of the identification of paper.The optical sensor portion possesses：Transport path；Light source portion；Optical splitter, will along with conveying side
Fluorescence to the 1st vertical direction is divided along the 2nd direction vertical with the 1st direction；Light accepting part, have along institute
The 1st direction and the 2nd direction are stated with the light accepting part of multiple photo detectors of grid-like arrangement；And signal processing part, it is defeated
Go out the fluorescence spectrophotometer picture signal with the light splitting photophase of the fluorescence.The identification part is based on defeated from the optical sensor portion
The fluorescence spectrophotometer picture signal gone out, carries out the identification of the paper.
Invention effect
In accordance with the invention it is possible to accurately distinguish the difference of the iridescent sent from paper, and paper can be carried out
Open the high-precision identification of class.
Brief description of the drawings
Fig. 1 is the explanation figure of the schematic configuration for the paper money identifier for being denoted as embodiment 1.
Fig. 2 (A) is the explanation figure for the schematic configuration for representing optical sensor portion.
Fig. 2 (B) is the explanation figure for the schematic configuration for representing optical sensor portion.
Fig. 3 is the explanation for the relation for representing the light splitting light from optical splitter that light accepting part irradiates with the smooth surface to light accepting part
Figure.
Fig. 4 is represented with the explanation figure of the example of the block of the wire of the bank note of certain fed distance unit differentiation.
Fig. 5 is the explanation figure of one for representing the spectral image by light accepting part reading.
Fig. 6 is other the explanation figures for representing the spectral image by light accepting part reading.
Fig. 7 is another other the explanation figure for representing the spectral image by light accepting part reading.
Fig. 8 is the explanation figure for representing the example that the fluorescence spectrophotometer detected in the position coordinates in Fig. 7 shown in (b) is distributed.
Fig. 9 is paper obtained from representing the spectral image as the bank note to reading as the block of each wire being combined
Coin is with specific iridescent come the explanation figure of one of fluoroscopic image that shows.
Figure 10 is the explanation figure of the schematic configuration in the optical sensor portion for the paper money identifier for representing embodiment 2.
Figure 11 is the explanation figure for luminous and white light the luminous switching for representing ultraviolet light.
Figure 12 is that the example for representing the reflection beam splitting image and fluorescence spectrophotometer image that is read by light accepting part timesharing is said
Bright figure.
Description of reference numerals
10 ... paper money identifiers；11 ... transport paths；11x ... imaginary centres face；12 ... encoder portions；
13 ... feed drive portions；13a ... conveying rollers；13b ... conveying rollers；14 ... optical sensor portions；14B ... optics passes
Sensor portion；15 ... Magnetic Sensor portions；16 ... control units；16a ... identification parts；21 ... light source portions；21B ... light sources
Portion；22 ... light guiding lens；22b ... bottom surfaces；22s ... end faces；22t ... convex surfaces；25 ... lens arrays；26 ... points
Light device；27 ... light accepting parts；27p ... photo detectors；28 ... signal processing parts；29 ... optical treatment substrates；30……
Casing (housing)；41 ... light-guiding mechanisms；S ... bank note；DL ... irradiation areas.
Embodiment
Hereinafter, the embodiment as sheet paper identification device of the invention, by paper such as bank note, marketable securities, checks
Bank note among class exemplified by the paper money identifier of identification object as illustrating.Paper money identifier is built in finance
Automatic trading apparatus, automatic compensation ticketing machine, ticket machine etc. as the ATM (Automated Teller Machine) that office is set
The various equipment handled bank note.
【Embodiment 1】
The pattern (pattern) (also known as " fluoroscopic image ") for the fluorescence that embodiment 1 is sent to reading from bank note is simultaneously carried out
The paper money identifier of the identification of bank note illustrates.
Fig. 1 is the explanation figure of the schematic configuration for the paper money identifier 10 for being denoted as embodiment 1.The paper money identifier
10 possess transport path 11, the feed drive portion 13 configured successively along transport path 11, optical sensor portion 14, Magnetic Sensor
Portion 15, encoder portion 12 and control unit 16.
Feed drive portion 13 possesses to be set up and upper and lower along the width (y directions) of transport path 11 in the x-direction
Opposed conveying roller 13a, 13b on direction (z directions).Conveying roller 13a, 13b are rotated by being transmitted by conveying motor (not illustrating)
Power and driven and rotated.The conveying roller 13a of upside is the driving side conveying roller driven by conveying motor, the conveying roller of downside
13b is the slave end conveying roller of the rotation for the conveying roller 13a for being driven in upside.Feed drive portion 13 will guide to transport road successively
The bank note S in footpath 11 is clamped with a pair of conveying rollers 13a, 13b, and is conveyed to the back-end along transport path 11.In addition, bank note S with
Short and long on width (y directions) state grown crosswise, is conveyed on transport path 11 on conveying direction (x directions).
The clock of pulse type is made every the delivery interval (transport cycle) for representing certain fed distance in encoder portion 12
The timing that is conveyed for feed drive portion 13 exports.Optical sensor portion 14 is according to the action timing based on clock, by every
Transport cycle is successively read the bank note S conveyed pattern.Magnetic Sensor portion 15 is according to the action timing based on clock, to being coated in
The magnetic of magnetic ink on the bank note S conveyed is differentiated.
Control unit 16 is entered based on action of the clock to feed drive portion 13, optical sensor portion 14 and Magnetic Sensor portion 15
Row control, and the pattern-information based on the bank note S read by optical sensor portion 14 and differentiated by magnetism sensor 15
Bank note S magnetic information, carry out the identification of the currency type of bank note, the detection of number, bank note the true and false discriminating.
Fig. 2 (A) and Fig. 2 (B) is the explanation figure for the schematic configuration for representing optical sensor portion 14.Optical sensor portion 14 matches somebody with somebody
Put in the casing (housing) 30 of box-like, possess light source portion 21, lens array 25, optical splitter 26, light accepting part 27 and be provided with
The optical treatment substrate 29 of signal processing part 28.
Light source portion 21 possess along y directions be configured to a row the multiple LED23 for sending ultraviolet light and will be multiple
The diffusion of each light shafts that LED23 is sent and the light guiding lens 22 for being used as the light shafts summed up to project.LED23 is sent ultraviolet
Light is set to encourage the wavelength of the fluorescent material contained by bank note S.
Light guiding lens 22 be with the plane bottom surface 22b opposed with multiple LED23, relative to bottom surface 22b with it is more
The opposite side of individual LED23 has the cylindrical lens (cylinder of the convex surface 22t of (width of transport path 11) extension in the y-direction
Lens).Multiple LED23 are arranged on LED array substrate 24 along the arrangement of y directions, and are configured near the 22b of bottom surface, more
The outgoing plane for being preferably configured to LED23 connects with bottom surface 22b, so that the light each sent is expeditiously incident to leaded light thoroughly
The bottom surface 22b of mirror 22.
Light source portion 21 is arranged to from the region of the defined wire in the light irradiation transport path 11 of the injection of light guiding lens 22.
For example, light source portion 21 is positioned against transport path 11 with the optical axis center of light source 21 from the top in the downstream of transport path 11
The irradiation area DL mode of upstream side obliquely set, (put down with the imaginary centres face 11x in transport path 11 with x/y plane
Capable face) on, to the irradiation area DL irradiation lights of wire elongated in y-direction.Irradiation area DL is set to cover from defeated
One end of the bank note S sent long side direction (y directions) is to the other end.In addition, irradiation wire irradiation area DL light (with
Under, also known as " irradiation light ") same with the irradiation area DL wire being not limited to along vertical with conveying direction y directions extension
Or the light of banding (hereinafter referred to as " wire etc. ").As long as can be irradiated to cover irradiation area DL, then not necessarily need to be
The irradiation light of the wire vertical with conveying direction etc..But if consider light illumination efficiency, preferably substantially with irradiation
In parallel, i.e. substantially vertical with the conveying direction scope in the direction of region DL line, in the range of such as 90 degree ± 10%
Wire etc. irradiation light.In addition, the wire that the closer direction vertical with conveying direction is then more preferred, vertical with conveying direction
Deng irradiation light most preferably.In addition, the irradiation area DL of wire direction is also not limited to the direction vertical with conveying direction,
It can be the direction in substantially vertical scope, in the range of such as 90 degree ± 10%.Wherein, closer and conveying direction
Vertical direction is then more preferred, and the direction vertical with conveying direction is most preferably.
Lens array 25 is that have from the irradiation area DL directions z direction vertical with x directions (conveying direction) and y directions
Optical axis center, the lens element of the construction that multiple rod-shaped lens of elongated shape arrange along y directions in a z-direction.To
It is delivered to the reflected light of the light of irradiation area DL bank note S part (also known as " illuminated part ") irradiation and from bank note S
The fluorescence sent Yong Zuo not show the image light of the image in bank note S illuminated part.But in this example, such as following theory
Bright, only fluorescence is used as effective image light.Lens array 25 is so that the image from the bank note S for being delivered to irradiation area DL
The mode that the optical image (spectral image) that light is showed is imaged on the smooth surface of light accepting part 27 focuses on.
Optical splitter 26 is configured between lens array 25 and light accepting part 27, and the wire projected from lens array 25 (is also claimed
For " banding ") image light be divided along the direction vertical with y directions, be transformed to along the direction diffusion vertical with y directions
The spectral image light of Two dimensional Distribution shape (planar).As the optical splitter 26, various prisms, grating (diffraction grating) etc. are used.This
In example, the prism using triangle column is set to.The spectral image light performance wavelength of the Two dimensional Distribution shape projected from optical splitter 26 is not
The light splitting wavelength optical picture (light splitting wavelength image) of same each light is arranged respectively at two on position corresponding with each wavelength
The spectral image of dimension distribution shape.In addition, by the light of optical splitter 26 because wavelength is more short, light reflects stronglyer, thus with y
It is divided from bottom to up as the light of the short wavelength side (in figure, towards right oblique direction) to long wavelength side on the vertical direction in direction.Separately
Outside, the direction of the line of the image light of wire equivalent to the present invention the 1st direction, the direction that the image light of wire is split equivalent to
The 2nd direction of the present invention.The direction (the 2nd direction) that the portrait light of the wire is split is not limited to the 1st direction (in this example
Y directions) direction in vertical direction or substantially vertical scope, in the range of such as 90 degree ± 10%.But
It is that the closer direction vertical with the 1st direction is then more preferred, and the direction vertical with the 1st direction is most preferably.
Fig. 3 is the explanation figure for the relation for representing the spectral image light that light accepting part 27 irradiates with the smooth surface to light accepting part 27.
Light accepting part 27 is multiple photo detector 27p in main scanning direction (the v direction parallel with y directions) and vertical with main scanning direction
Sub-scanning direction (w directions) on the dimension sensor that arranges.Photo detector 27p is to be transformed to the light of receiving and its strong and weak phase
The components of photo-electric conversion for the electromotive force answered, its action are controlled by drive circuit (not shown).As light accepting part 27, quilt can be used
Group has entered the various dimension sensor IC of photo detector and drive circuit, such as cmos sensor, ccd sensor.
Distribution arrangement i.e. of the multiple photo detector 27p of light accepting part 27 in the spectral image light by being projected from optical splitter 26
Lattice-shaped is arranged in the face that 1 direction and the 2nd direction are formed, receives the light splitting light (spectral image light) projected from optical splitter 26
Ysa.Therefore, the photo detector 27p arranged on main scanning direction v positional representation performance bank note S long side direction (y directions)
Position coordinate (also known as " position coordinates "), the photo detector 27p arranged on sub-scanning direction w positional representation performance
From light splitting light Ysa long wavelength side to the coordinate (also known as " wavelength coordinate ") of the wavelength of short wavelength side.
In light accepting part 27, by carrying out light-to-current inversion, the light splitting light that will be received to the light received by each photo detector 27p
The Dichroic Optical picture that (spectral image light) is showed is read as spectral image.But as described above, each photo detector 27p
Action press and controlled per the clock cycle (also known as " transport cycle ", or " during conveying "), the clock is by the every of bank note S
The clock that certain fed distance exports from encoder portion 12.Therefore, in fact, the paper distinguished with certain fed distance unit
The Dichroic Optical picture in each region (block) of coin S wire (banding) is successively read as spectral image.Therefore, bank note S
Short side direction (conveying direction, x directions) reading resolution ratio be transport cycle in bank note S conveying capacity (convey away from
From).In addition, the resolution ratio of bank note S long side direction (direction vertical with conveying direction, y directions) corresponds to photo detector 27p
Main scanning direction the number of permutations.In addition, the number of permutations of photo detector 27p sub-scanning direction corresponds to the resolution of light splitting wavelength
Rate.The photo detector 27p of the main scanning direction number of permutations is more, can more identify the position of bank note S long side direction in detail,
The number of permutations of the photo detector of sub-scanning direction is more, can more identify wavelength, the i.e. difference of color of detected light in detail
It is different.In addition, the fed distance of the bank note S in transport cycle is shorter, bank note S short side direction (conveying can be more identified in detail
Direction) position.
Fig. 4 is represented with the explanation figure of the example of the block of the bank note S of certain fed distance unit differentiation wire.DA
(1)~DA (n) represents the block of the wire read in each transport cycle.
Analog signal corresponding with the spectral image read by light accepting part 27 is by the letter on optical treatment substrate 29
Number processing unit 28 (Fig. 2 (A) and Fig. 2 (B)) is handled, and carries out various computing working processes.Thus, obtain and read from bank note S
The various image informations taken.In addition, what signal processing part 28 was generally formed by being integrated of circuit for carrying out above-mentioned various processing
IC is formed.The bank note S obtained by signal processing part 28 various image informations are sent to the identification part 16a of control unit 16.Know
Other portion 16a carries out bank note S identification based on obtained image information.
, being capable of the image based on the bank note S read in optical sensor portion 14, specifically in paper money identifier 10
The spectral image of the spectral image light for the fluorescence that each block based on the wire by bank note S is sent, enters as described below
Row bank note S identification.
Fig. 5 is the explanation figure of one of spectral image for representing to be read by light accepting part 27.(a) will be by light accepting part 27 in Fig. 5
A part for the spectral image of reading cuts out and represented.Each pixel arranged on sub-scanning direction corresponds to by every bandwidth 25nm
Nine bandwidth distinguished, the centre wavelength of each differentiation is 680,655,630,605,580,555,530,505,480nm.This
Outside, each pixel arranged on main scanning direction corresponding to bank note S long side direction position, in order to easily illustrate in this example,
The region being expressed as after interval obtained from the length of bank note S long side direction is carried out into 20 deciles makes a distinction.In addition,
Show that the color in pixel is more dense in Fig. 5 in (a), the luminous intensity detected is higher, as brighter pixel.
The spectral image of (a) represents that the line of the pixel of wavelength coordinate corresponding with centre wavelength 580nm is detected as in Fig. 5
The state of the line of the high and bright pixel of luminous intensity.In this case, such as in Fig. 5 (b) is shown, can pick out and be read
In the block DA of the bank note S of spectral image wire, the fluorescence of the fluorescence of color corresponding with the wavelength coordinate detected is sent
Long side directions of the image Pfla along bank note S is with wire (banding) formation.Specifically, the picture detected in the spectral image
The wavelength coordinate of the line of element is the coordinate that centre wavelength is 580nm, therefore can pick out the fluorescence that fluoroscopic image Pfla is sent
Color be yellow.In addition, the lightness of iridescent can recognize according to the intensity of the light detected in each pixel.
In addition, on above-mentioned spectral image, it is illustrated exemplified by sending the fluoroscopic image of fluorescence of yellow, but send
It is also identical in the fluoroscopic image of the fluorescence of other colors.In addition, the one of 380nm or so~780nm or so can not only be picked out
As visible ray color, and send the ultraviolet light of shorter wavelength side, longer wavelength side infrared light fluorescence fluorogram
As can similarly recognize.
Fig. 6 is other the explanation figures of spectral image for representing to be read by light accepting part 27.The spectroscopy scheme of (a) in Fig. 6
As also equally a part for the spectral image read by light accepting part 27 is cut out with (a) in Fig. 5 and represented.The spectral image represents
It is high and bright that the line of the pixel of wavelength coordinate corresponding with centre wavelength 630nm, 580nm and 530nm is detected as luminous intensity respectively
The state of the line of bright pixel.Also it is same with the situation of spectral image illustrated in fig. 5 in this case, such as (b) institute in Fig. 6
Show, can pick out in the block DA of the bank note S wire of spectral image has been read, the wavelength coordinate pair for sending and detecting
Long side directions of the fluoroscopic image Pflb of the fluorescence for the color answered along bank note S is with wire (banding) formation.Specifically, this point
The wavelength coordinate of the line of the pixel detected in light image is centre wavelength 630nm, 580nm and 530nm, therefore can be recognized
The color for going out the fluorescence that fluoroscopic image Pflb is sent is this 3 color of red, yellow, and green.In addition, the lightness of each iridescent being capable of root
Recognized according to the intensity of each light.In addition, in the spectral image, entered in case of sending red, yellow, and green these three iridescent
Explanation is gone, but can similarly have been recognized in the case where sending other multiple iridescent.
As previously discussed, in Fig. 5,6, in the spectral image of reading, can pick out send it is high and bright with luminous intensity
Pixel line corresponding to iridescent represented by wavelength coordinate fluoroscopic image, and can detect sent from bank note S it is glimmering
Photochromic and its lightness, therefore bank note S identification can be used in.In addition, on the contrary, what is predetermined by detecting is specific
Wavelength coordinate, i.e. specific iridescent pixel line luminous intensity state, so as to detect the presence of send it is specific
The fluoroscopic image of iridescent, therefore bank note S identification can be used in.
Fig. 7 is another other the explanation figure of spectral image for representing to be read by light accepting part 27.In Fig. 7 (a)
Spectral image also equally cuts out a part for the spectral image read by light accepting part 27 and table with (a) in (a), Fig. 6 in Fig. 5
Show.The spectral image illustrates that the line of the pixel of the position coordinates of the ad-hoc location of bank note S long side direction (y directions) is detected
Survey the state of the line for the high and bright pixel of luminous intensity.In this case, such as in Fig. 7 (b) is shown, can pick out in quilt
It has read among the block DA of the bank note S of light splitting portrait wire, bank note S corresponding with the position coordinates detected long side side
To ad-hoc location on, formed with the fluoroscopic image Pflc for sending fluorescence.In addition, the color for the fluorescence that fluoroscopic image Pflc is sent
And its lightness can recognize according to the wavelength coordinate and the intensity of light detected.By read light splitting can be recognized
The position of the high and bright pixel of luminous intensity in image, and can detect on the position from the bank note S iridescent sent and
Its lightness, therefore bank note S identification can be used in.In addition it is also possible to detect the presence of send it is pre-determined specific
Iridescent fluorescent material.In addition, as described below, also can be according to the light of the fluorescence detected in each wavelength coordinate
Distribution (following, also known as " fluorescence spectrophotometer distribution ") fluorescent material used in determination of intensity.
Fig. 8 is the explanation figure for representing the example that the fluorescence spectrophotometer detected in the position coordinates in Fig. 7 shown in (b) is distributed.
In the case that fluorescence spectrophotometer distribution is precipitous as shown in (a) in Fig. 8, it is known that be the fluorescent material based on inorganic compound.In addition,
In the case that fluorescence spectrophotometer distribution is gentle as shown in (b) in Fig. 8, it is known that be the fluorescent material based on organic compound.Like this,
Fluorescent material used in being determined based on the shape of the Wavelength distribution (spatial distribution) of fluorescence.
Fig. 9 is bank note S obtained from representing that the spectral image of the bank note of each block reading as wire will be combined
The explanation figure of one of the fluoroscopic image showed with specific iridescent.By from each block (reference picture 4) by wire successively
The bank note S of reading spectral image, line PDA (1)~PDA (n) of the pixel of specific wavelength coordinate is cut out respectively and carries out group
Close, can generate and only show bank note S fluoroscopic image Pfls with the iridescent of wavelength corresponding with specific wavelength coordinate.Fig. 9
Fluoroscopic image Pfls represent to form the rectangular-shaped image Pfl1 for sending that wavelength is 580nm fluorescence, the i.e. fluorescence of yellow
~Pfl4 example.Like this, only show bank note S's with the iridescent of wavelength corresponding with specific wavelength coordinate by generating
Image, bank note S identification can be used in.
It is as described above, in the paper money identifier 10 of the present embodiment, by optical sensor portion 14 to being sent from bank note S
Fluorescence is divided, and detection sends position and the lightness of the fluorescence of the color represented by the wavelength after light splitting in detail,
Thus, it is possible to distinguish the color of fluorescence and the difference of lightness in detail.Thereby, it is possible to accurately read bank note S fluorescence
Pattern (fluoroscopic image), it can accurately carry out bank note S identification.
【Embodiment 2】
Illustrate the pattern (fluoroscopic image) for reading the fluorescence occurred from bank note similarly to Example 1, and one in embodiment 2
And the pattern (also known as " non-fluorescence image ") of the reflected light from bank note is read, carry out the paper money recognition dress of the identification of bank note
Put.
Figure 10 is the explanation figure of the optical sensor portion 14B for the paper money identifier for representing embodiment 2 schematic configuration.Light
Learn sensor portion 14B and possess light source portion 21B to substitute the light source portion 21 in the optical sensor portion 14 of embodiment 1.Knot beyond it
Structure is substantially the same manner as Example 1, omits the explanation to other structures.
End face 22ss of the light source portion 21B in the y directions side of light guiding lens 22 is equal with wide as natural light provided with sending
The common light of even wavelength diffusion properties, the LED40 for for example sending white light, and on the bottom surface 22b edges of light guiding lens 22
Y directions and be provided with light-guiding mechanism 41.But it is white light that it is not absolutely required to, as long as with the paper to be identified can be read
Open the light of the visible wavelength distribution character of the light of class S color.In this example, it is set to send white light.Sent from LED40
Light is incident from end face 22s, is reflected by light-guiding mechanism 41, is thus projected in a manner of irradiating irradiation area DL from convex surface 22t.Separately
Outside, light-guiding mechanism 41 can be for example made up of reflecting plate.In addition it is also possible to by by the bottom surface 22b of light guiding lens 22 construction
It is set to the fully reflecting surface for being incident to light in light guiding lens 22 from LED40 and being reflected to convex surface 22t direction, thus leaded light is set
Mechanism 41.In addition it is also possible to total reflection prism is set as light-guiding mechanism 41 in the bottom surface 22b of light guiding lens 22.
Figure 11 is the explanation figure for luminous and white light the luminous switching for representing ultraviolet light.(a) represents to press in Figure 11
The clock that bank note S every certain fed distance exports from encoder portion 12,1 cycle of the clock represent bank note S conveying
Period.(b) represents that timesharing will be carried out during the conveying of (a) in Figure 11 in Figure 11, is lit in the first half LED40 of transport cycle
And during sending white light, in Figure 11, (c) represents the transport cycle of (a) in Figure 11 carrying out timesharing, after transport cycle
During half portion LED23 is lit and sends ultraviolet light.In addition, these LED23's and LED40 lights by installed in LED battle arrays
Starting controlling circuit (not illustrating) on row substrate 24 performs.
During the white color light emitting of first half in Figure 11 shown in (b), the reflected light of bank note S white light is exposed to
Light splitting light (also known as " reflection beam splitting light " or " the non-fluorescence light splitting of (also known as " reflected image light " or " non-fluorescence image light ")
Light ", in addition, also known as " reflection beam splitting image light " or " non-fluorescence spectral image light ") represented by Dichroic Optical picture as point
Light image (" reflection beam splitting image " or " non-fluorescence spectral image ") is read.It is in addition, latter half of shown in (c) in fig. 11
During UV-light luminous, similarly to Example 1, light splitting light (also known as " fluorescence spectrophotometer light " or " the fluorescence spectrophotometer image of fluorescence
Light ") represented by Dichroic Optical picture be read as spectral image (also turning into " fluorescence spectrophotometer image ").That is, in bank note S quilts
Convey and read in a reading process of bank note S information, it is defeated by will be distinguished by bank note S every certain fed distance
Send the cycle to carry out timesharing, common reflection beam splitting image and fluorescence spectrophotometer image both sides can be read.
Figure 12 is the example for representing the reflection beam splitting image and fluorescence spectrophotometer image read by the timesharing of light accepting part 27
Illustrate figure.The fluorescence spectrophotometer image of (b) is in bank note S and identical in the reflection beam splitting image and Figure 12 of (a) in Figure 12
The spectral image read in the block (reference picture 4) of wire corresponding to transport cycle.(a) in Figure 12, (b) spectral image also all with
A part for the spectral image read by light accepting part 27 is equally cut out and represented by (a) in (a), Fig. 7 in (a), Fig. 6 in Fig. 5.
Represent that the more dense then volume reflection of color in pixel is more and brighter in Figure 12 in the reflection beam splitting image of (a).Cause
This, pixel region Aw1, Aw2 show the more and bright state of volume reflection compared with the Aw3 of these neighboring pixel regions.Thus, it is possible to
Pick out as shown in (c) in Figure 12, among the block DA of the bank note S wire of reflection beam splitting image has been read and pixel region
Corresponding to the Aw1 of domain on location of pixels, formed with comprising with centre wavelength be 505nm~605nm wave band each wave band under
The image Pwa of the color of lightness corresponding to luminous intensity.Furthermore it is possible to pick out in pixel position corresponding with pixel region Aw2
Put, formed with including and the corresponding lightness of luminous intensity under each wave band for the wave band that centre wavelength is 580nm~630nm
Color image Pwb.
In addition, represent that the more dense then fluorescence volume of color in pixel is more and bright in Figure 12 in the fluorescence spectrophotometer image of (b).
Therefore, show that pixel region Afl1 is detected centre wavelength 580nm fluorescence, image-region Afl2 is detected centre wavelength
The state of 630nm fluorescence.Thus, it is possible to pick out as shown in (c) in Figure 12, the bank note S of fluorescence spectrophotometer image is being read
Wire block DA among location of pixels corresponding with pixel region Afl1, Afl2 on, formed with sending yellow and red
The image Pfld of fluorescence.
In addition, in above-mentioned reflection beam splitting image, face corresponding with each wavelength after light splitting can be picked out in detail
The lightness of color, therefore the difference of color can be distinguished in detail, the difference based on color can accurately carry out bank note S's
Identification.Equally, the difference of iridescent can also be distinguished in detail in above-mentioned fluorescence spectrophotometer image, the difference based on color can
Accurately carry out bank note S identification.And then by combining the identification of the bank note S based on reflection beam splitting image and based on fluorescence
The bank note S of spectral image identification, the bank note S of higher precision identification can be carried out.
It is as described above, in the optical sensor portion 14B of the paper money identifier of the present embodiment, when bank note S is conveyed
A reading process in, by the way that transport cycle is carried out into timesharing, reading and the paper of bank note S reflection beam splitting image can be carried out
The reading of coin S fluorescence spectrophotometer image.Thus, it is same with conventional paper money identifier, being capable of the reflected image based on reading
To carry out the identification of bank note S in general, and by carrying out bank note S identification based on reflection beam splitting image, so as to it is conventional
Paper money identifier compares the difference that can distinguish color in detail, and can carry out high-precision identification.In addition, with implementation
Example 1 is same, and the fluorescence spectrophotometer image based on reading distinguishes the difference of color in detail, can accurately carry out bank note S knowledge
Not.And then the information obtained from reflection beam splitting image and the information obtained from fluorescence spectrophotometer image can be combined and
Bank note S identification is synthetically carried out, the identification of higher precision can be carried out.
In addition, the light source portion 21B of the present embodiment is configured to by the LED40 that sends white light, light-guiding mechanism 41 and led
Optical lens 22 irradiates white light to irradiation area DL, but can also be equally constituted with sending multiple LED23 of ultraviolet light as that will send out
Go out multiple LED of white light with array-like configuration light guiding lens 22 bottom surface 22b, via light guiding lens 22 to irradiation area DL
Irradiate white light.In addition, in this example, as light source, it is illustrated by taking LED as an example, but is not limited to LED, can also be made
With various light sources.
In addition, in the optical sensor portion 14B of the present embodiment, with relative to transport path 11 with the identical of light accepting part 27
It is illustrated exemplified by upper side configuration light source portion 21B reflective optics.It however, it can be relative to transport path 11
In the lower side configuration light source portion 21B opposite with light accepting part 27 projection optical system.In addition it is also possible to it is except reflecting optics
The structure of projection optical system is also equipped with beyond system.For example, it is also possible to it is to configure the light source for sending fluorescence in transport path
11 upper side or lower side, the light source for sending white light is configured in the upper side of transport path 11 and the knot of lower side
Structure.
In addition, the present invention is not limited to the above embodiments, and include various deformation example.For example, the above embodiments
It is to by understandable the embodiment for illustrating and describing in detail of the present invention, be not limited to must possess illustrated whole knots
The composition of structure.In addition it is also possible to a part for the structure of certain embodiment is replaced into the structure of other embodiment, in addition, also may be used
To add the structure of other embodiment to the structure of certain embodiment.
Claims (4)
1. a kind of sheet paper identification device, paper is identified, it is characterised in that
Possess：
Optical sensor portion；And
Identification part, carry out the identification of the paper；
The optical sensor portion possesses：
Transport path, the paper are conveyed along conveying direction；
Light source portion, will be glimmering contained by the paper with making for the paper moved on the transport path
Stimulative substance sends irradiation of the light of the wavelength of fluorescence as the wire or banding extended along the direction vertical with the conveying direction
Light irradiates to the paper；
Optical splitter, by from the illuminated portions incident of the paper of the illuminated irradiation light and along and the conveying side
To the fluorescence of the wire in the 1st vertical direction, it is divided along 2nd direction vertical with the 1st direction；
Light accepting part, there are multiple photo detectors, and receive the light splitting light of the fluorescence from the optical splitter, the multiple light member
Part is along the 1st direction and the 2nd direction with grid-like arrangement；And
Signal processing part, the fluorescence spectrophotometer image of the light splitting photophase for the fluorescence that output is received with the light accepting part are believed
Number；
The identification part carries out the paper based on the fluorescence spectrophotometer picture signal exported from the optical sensor portion
Identification；
The identification part is based on corresponding with the assigned position in the 1st direction among the fluorescence spectrophotometer image and along described
The light splitting location drawing picture of the wire in 2 directions, detect sent from the assigned position of the illuminated part of the paper it is glimmering
The intensity of light and light splitting distribution, and based on the identification of the testing result progress paper.
2. sheet paper identification device as claimed in claim 1, it is characterised in that
The light source portion has：
1st light source, sends the 1st light, and the 1st light has the wavelength for making the fluorescent material send fluorescence；And
2nd light source, the 2nd light being sent, the 2nd light is non-fluorescence, and with defined wave-length coverage；
In 1st period obtained from timesharing is carried out during the corresponding conveying by certain conveying capacity with the paper, institute
State the 1st light and be irradiated to the illuminated part as the irradiation light, thus export the fluorescence point from the signal processing part
Light image signal,
In the 2nd period obtained from timesharing will be carried out during the conveying, the 2nd light is irradiated to institute as the irradiation light
Illuminated part is stated, thus the non-fluorescence light of the wire from the illuminated portions incident is divided by the optical splitter,
By the light accepting part receive the non-fluorescence light splitting light from the optical splitter, and from the signal processing part output and institute
State the non-fluorescence spectral image signal for the non-fluorescence light splitting photophase that light accepting part is received；
The identification part is based on the fluorescence spectrophotometer picture signal and the non-fluorescence spectral image signal, carries out the paper
The identification of class.
3. a kind of sheet paper identification device, paper is identified, it is characterised in that
Possess：
Optical sensor portion；And
Identification part, carry out the identification of the paper；
The optical sensor portion possesses：
Transport path, the paper are conveyed along conveying direction；
Light source portion, will be glimmering contained by the paper with making for the paper moved on the transport path
Stimulative substance sends irradiation of the light of the wavelength of fluorescence as the wire or banding extended along the direction vertical with the conveying direction
Light irradiates to the paper；
Optical splitter, by from the illuminated portions incident of the paper of the illuminated irradiation light and along and the conveying side
To the fluorescence of the wire in the 1st vertical direction, it is divided along 2nd direction vertical with the 1st direction；
Light accepting part, there are multiple photo detectors, and receive the light splitting light of the fluorescence from the optical splitter, the multiple light member
Part is along the 1st direction and the 2nd direction with grid-like arrangement；And
Signal processing part, the fluorescence spectrophotometer image of the light splitting photophase for the fluorescence that output is received with the light accepting part are believed
Number；
The identification part carries out the paper based on the fluorescence spectrophotometer picture signal exported from the optical sensor portion
Identification；
Each wrapped by the fluorescence spectrophotometer image that is obtained to the region of each banding by the paper the identification part
The light splitting wavelength image of the wire of the provision wavelengths contained is combined, and generation represents what is showed by the fluorescence of the provision wavelengths
The image of the paper, and the image based on generation carries out the identification of the paper, each banding of the paper
Region is by the region distinguished per certain fed distance along the conveying direction.
4. sheet paper identification device as claimed in claim 3, it is characterised in that
The light source portion has：
1st light source, sends the 1st light, and the 1st light has the wavelength for making the fluorescent material send fluorescence；And
2nd light source, the 2nd light being sent, the 2nd light is non-fluorescence, and with defined wave-length coverage；
In 1st period obtained from timesharing is carried out during the corresponding conveying by certain conveying capacity with the paper, institute
State the 1st light and be irradiated to the illuminated part as the irradiation light, thus export the fluorescence point from the signal processing part
Light image signal,
In the 2nd period obtained from timesharing will be carried out during the conveying, the 2nd light is irradiated to institute as the irradiation light
Illuminated part is stated, thus the non-fluorescence light of the wire from the illuminated portions incident is divided by the optical splitter,
By the light accepting part receive the non-fluorescence light splitting light from the optical splitter, and from the signal processing part output and institute
State the non-fluorescence spectral image signal for the non-fluorescence light splitting photophase that light accepting part is received；
The identification part is based on the fluorescence spectrophotometer picture signal and the non-fluorescence spectral image signal, carries out the paper
The identification of class.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013-116737 | 2013-06-03 | ||
| JP2013116737A JP6009992B2 (en) | 2013-06-03 | 2013-06-03 | Paper sheet identification device and optical sensor device |
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| Publication Number | Publication Date |
|---|---|
| CN104215613A CN104215613A (en) | 2014-12-17 |
| CN104215613B true CN104215613B (en) | 2017-12-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410242406.0A Active CN104215613B (en) | 2013-06-03 | 2014-06-03 | Sheet paper identification device and optical sensor arrangement |
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| JP (1) | JP6009992B2 (en) |
| CN (1) | CN104215613B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017010149A (en) * | 2015-06-18 | 2017-01-12 | 沖電気工業株式会社 | Medium processing device and automatic transaction device |
| EP3637378B1 (en) * | 2017-05-26 | 2024-05-01 | Toppan Printing Co., Ltd. | Identification device, identification method, and identification program |
| CN112229441A (en) * | 2020-09-10 | 2021-01-15 | 西安工程大学 | Automatic paper sorting device |
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| EP0466119B1 (en) * | 1990-07-11 | 1999-09-29 | GAO Gesellschaft für Automation und Organisation mbH | Apparatus and method for checking documents |
| JP2005024335A (en) * | 2003-06-30 | 2005-01-27 | Nidec Copal Corp | Inspection device |
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Also Published As
| Publication number | Publication date |
|---|---|
| JP6009992B2 (en) | 2016-10-19 |
| CN104215613A (en) | 2014-12-17 |
| JP2014235577A (en) | 2014-12-15 |
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Address after: Tokyo, Japan Patentee after: Hitachi Financial Systems Co.,Ltd. Address before: Tokyo, Japan Patentee before: HITACHI-OMRON TERMINAL SOLUTIONS, Corp. |