CN102129738B - Optical sensor and regonization unit - Google Patents
Optical sensor and regonization unit Download PDFInfo
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- CN102129738B CN102129738B CN201010588511.1A CN201010588511A CN102129738B CN 102129738 B CN102129738 B CN 102129738B CN 201010588511 A CN201010588511 A CN 201010588511A CN 102129738 B CN102129738 B CN 102129738B
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Abstract
The present invention provides an optical sensor and a recognizing unit, which restrains detection precision reduction of a fluorescent light-emitting pattern that is caused by muddiness of an optical wave filter that is provided in front of a light receiving part for detecting the fluorescent light emitting pattern of the paper. A paper money recognizing unit (20) is characterized in that: a detection part (24) causes a second light emitter (22B) of a light emitting part (22) to emit light and irradiates the light with a second wavelength (S11). A detection part (24) regulates the power supplied to the second light emitter (22B) and detects the powers (P1) which are output from a light receiving part (23) and becomes the reference value stored by a storage part (26) (S12). The detection part (24) calculates a supply power (P2) to a correction value based on the power (P1) detected in (S12) and a related function (F) that is stored in the storage part (26) when the light emitting amount of a first light emitter (22A) becomes the light emitting amount which is suitable for fluorescent light emitting pattern detection (S13). The paper money recognizing unit (20) controls the power that is supplied to the first light emitter (22A) based on the correction value stored in the storage part (26).
Description
Technical field
The present invention relates to the optical sensor that the fluorescence radiation pattern of fluorescent material that paper sheet is had detects, and use this optical sensor, based on detected phosphor pattern by the recognition unit of its true and false.
Background technology
In the past, there was the automat that the paper sheets such as bank note, check, security are processed.This automat possesses the recognition unit that the true and false of handled paper sheet is identified.As this automat, such as the cash banding machine (hereinafter referred to as ATM) of the financial institution such as depositing in the bank and in the shop, arranging.
Bank note is to use the ink (ink that contains fluorescent material) that carries out luminous (hereinafter referred to as fluorescence) when having shone special wavelength light (hereinafter referred to as exciting light), prints the pattern that prevents from forging usefulness.And, for paper using, use and himself do not contain the paper using of fluorescent material.Therefore, in the situation that the true and false of bank note is identified, the fluorescence radiation pattern that the fluorescence radiation of the bank note of this identifying object is produced detects, and can identify its true and false based on this fluorescence radiation pattern.
As the recognition unit of the true and false that detects fluorescence radiation pattern, identification bank note, the unit that for example exists patent documentation 1 to put down in writing.The recognition unit that this patent documentation 1 is put down in writing has bank note is shone exciting light and the exciting light that bank note reflects is subjected to the first light accepting part of light and the second light accepting part that the secondary light that the fluorescence radiation with bank note accompanies is subjected to light.The optical filter that the secondary light wavelength that has the fluorescence radiation that only makes bank note to produce in the former configuration of the second light accepting part is passed through.This recognition unit detects the fluorescence radiation pattern of this bank note by the reflected light pattern of the first light accepting part detection bank note, by the second light accepting part.And, the true and false of identifying this bank note based on the reflected light pattern that detects and fluorescence radiation pattern.
And this recognition unit is, clips the carrying channel of conveyance bank note, relatively configures reflecting plate with the illuminating part of light excitation light.Recognition unit is, carries out control that the luminous quantity of illuminating part is adjusted, so that when not having bank note, detects from the reflection of light light of illuminating part to the reflecting plate irradiation by the first light accepting part, and this detections is exported becomes predetermined reference value.Carry out this control and be changing for the light quantity of the illuminating part that suppresses to be caused by temporal evolution etc. the reduction of the accuracy of identification of the bank note that causes.
And the recognition unit of record is in patent documentation 2, and the transmitted light pattern of bank note is detected, and identifies the true and false of this bank note based on this transmitted light pattern.This recognition unit is to make illuminating part and light accepting part clip carrying channel and relative configuration.This recognition unit is, detects by the transmitted light pattern of light accepting part to bank note, identifies the true and false of this bank note based on this transmitted light pattern.And, this recognition unit also constitutes, change the reduction of the accuracy of identification of the bank note that causes for the light quantity of the illuminating part that suppresses to be caused by temporal evolution etc., carry out control that the luminous quantity of illuminating part is adjusted, so that the detection of the light accepting part under the state that does not have bank note between illuminating part and light accepting part output becomes pre-stored adjustment reference value.
Patent documentation 1: TOHKEMY 2003-67805 communique
Patent documentation 2: TOHKEMY 2001-195629 communique
But, the fluorescence radiation pattern of the paper sheets such as bank note is detected to identify the recognition unit of its true and false, as patent documentation 1 is also put down in writing, the optical filter that near the light of the wavelength the former configuration of the light accepting part that detects this fluorescence radiation pattern has the secondary light that the fluorescence radiation that only makes paper sheet produces passes through.Patent documentation 1 only is the catoptrical light accepting part that use to detect from bank note, and the luminous quantity of illuminating part is set as the adjustment reference value.That is, patent documentation 1 does not have to consider to follow the decay of detection light of the dirt etc. of optical filter.
Therefore, in the formation that patent documentation 1 proposes, the problem of existence is, along with the pollution of optical filter, reduced by the light quantity of the suffered light of light accepting part of the fluorescence radiation pattern that detects paper sheet, and the accuracy of detection of fluorescence radiation pattern reduces.
In addition, in the patent documentation 2, as mentioned above, owing to being the formation that does not detect the fluorescence radiation pattern of paper sheet, therefore do not configure optical filter in the front of light accepting part.
Summary of the invention
The object of the invention is to, a kind of optical sensor is provided, suppress to be configured in the reduction of the accuracy of detection of this fluorescence radiation pattern that the dirt of the optical filter of the light accepting part front that the fluorescence radiation pattern to paper sheet detects causes, and the recognition unit that has used this optical sensor.
Optical sensor of the present invention is in order to realize above-mentioned purpose as consist of followingly.
This optical sensor, for along carrying channel by the paper sheet of conveyance, detect the fluorescence radiation pattern based on fluorescent material that this paper sheet has.Generally, the paper sheets such as bank note, check, security use the ink (ink that contains fluorescent material) that carries out luminous (hereinafter referred to as fluorescence) when having shone special wavelength light (hereinafter referred to as exciting light), print the pattern that prevents from forging usefulness.And, for paper using, do not carry out the fluorescence radiation paper using of (not containing fluorescent material).
Illuminating part and light accepting part clip the carrying channel of conveyance paper sheet and relative configuration.This illuminating part has the first luminophor of the light (being exciting light) that shines the activating fluorescent material and make its first luminous wavelength and the second luminophor of the light that shines the second wave length different from this first wavelength.
And optical filter is configured between light accepting part and the carrying channel.This optical filter blocks the light of the first wavelength of illuminating part irradiation.The characteristic that optical filter preferably has is, the light of second wave length of illuminating part irradiation and the light (hereinafter referred to as secondary light) that fluorescent material that paper sheet has carries out fluorescence radiation are passed through.In other words, the light of the second wave length of illuminating part irradiation is the light near the secondary light wavelength, and it is to get final product near the secondary light wavelength that optical filter makes the wave band that passes through.
The modified value calculating part is, when not having paper sheet between illuminating part and light accepting part, the detected value of the light accepting part that produces based on the light of the second wave length of the second luminophor irradiation calculates modified value.Therefore, can calculate the modified value of dirt of the optical filter of the front of having considered to be configured in light accepting part.Test section, use modified value that the modified value calculating part calculates and the first luminophor shines the light of the first wavelength to the paper sheet along the conveyance of carrying channel institute, and by light accepting part the luminous pattern based on the fluorescent material of sneaking in this paper sheet is detected.
Test section also can constitute, and the modified value of using the modified value calculating part to calculate is controlled the luminous quantity of the first luminophor, also can constitute the output of light accepting part is controlled.For example, in the situation that the luminous quantity of the first luminophor is controlled, the modified value that calculates for the electric power that determines the first luminophor is supplied with gets final product.And in the situation that the output of light accepting part is controlled, the modified value that calculates for the magnification of the output of determine amplifying light accepting part gets final product.
Therefore, can be configured in light accepting part the front wave filter dirt impact and the light light quantity that is subjected to of light accepting part is remained suitably.Thus, suppress to be configured in the reduction of the accuracy of detection of this fluorescence radiation pattern that the dirt of the optical filter of the light accepting part front that the fluorescence radiation pattern to paper sheet detects causes.
And, the sensitivity of the light accepting part that can also cause corresponding to temporal evolution deteriorated.
And, by using this optical sensor, identify paper sheet based on the fluorescence radiation pattern of the paper sheet that is obtained by this optical sensor, can guarantee enough accuracy of identification.
The effect of invention:
According to the present invention, suppress to be configured in the reduction of the accuracy of detection of this fluorescence radiation pattern that the dirt of the optical filter of the light accepting part front that the fluorescence radiation pattern to paper sheet detects causes.
And, can fully guarantee the accuracy of identification to paper sheet.
Description of drawings
Fig. 1 is the skeleton diagram of the outward appearance of expression ATM.
Fig. 2 is the block diagram of formation of the major part of expression ATM.
Fig. 3 is the skeleton diagram that the inside of expression bill handling section consists of.
Fig. 4 is the block diagram of formation of the major part of expression paper money recognition unit.
Fig. 5 is the figure of the configuration of illuminating part on the expression bank note carrying channel and light accepting part.
Fig. 6 is the process flow diagram that the expression paper money recognition is processed.
Fig. 7 is the process flow diagram of expression correcting process.
Fig. 8 is the figure of the correlationship between the luminous quantity of the expression luminous quantity of the first luminophor and the second luminophor.
The explanation of symbol:
1ATM
20 paper money recognition unit
21 control parts
22 illuminating parts
22A the first luminophor
22B the second luminophor
23 light accepting parts
The 23A optical filter
24 test sections
25 identification parts
26 reservoir
27 input and output sections
Embodiment
Below, embodiments of the present invention are described.
Herein, describe as example with the cash banding machine (hereinafter referred to as ATM) that has used the related recognition unit of upper embodiment of the present invention.And, in this recognition unit, used the related optical sensor of embodiments of the present invention.
Fig. 1 is the skeleton diagram of outward appearance of expression ATM, and Fig. 2 is the block diagram of formation of the major part of expression ATM.ATM1 is arranged in the shop of financial institution and convenience store etc.ATM1 processes the various transaction such as credit transaction and the transaction of withdrawing the money according to user's input operation.ATM1 possesses master control part 2, display operation section 3, bill handling section 4, coin handling part 5, card and detail form handling part 6, bankbook handling part 7, Biont information reading part 8 and Department of Communication Force 9.The transaction that processing and utilizing person asks is controlled in the action of 2 pairs of ATM1 main bodys of master control part each several part.
Display operation section 3 has the touch pad 3B on the display 3A that is arranged on the main body front and the picture that sticks on this display 3A etc.Display operation section 3 will be for user's operation guide picture disply on display 3A.And display operation section 3 detects the user's of password and transaction content (type of transaction, the amount of money etc. of depositing and withdrawing) input operation by detecting touch pad 3B depressed position.
4 pairs of bank note of depositing and withdrawing of bill handling section are processed.Be provided with the paper money depositing and drawing port 4A that collects the bank note of depositing and withdrawing in the main body front.4A is provided with gate at this paper money depositing and drawing port.And, be provided with deposit bank note, the dividing plate that the place is distinguished of taking in of withdrawing the money bank note and returning bank note at paper money depositing and drawing port 4A.The switching of bill handling section 4 by gate limits input and the taking-up for the bank note of paper money depositing and drawing port 4A.The detailed formation of bill handling section 4 is with aftermentioned.
Card and detail form handling part 6 are, be taken into the cash card (being designated hereinafter simply as card) that inserts to the card insert opening 6A that is arranged on the main body front, and carry out reading and the rewriting of card information etc. of card information (financial institution's sequence number, shop sequence number, account sequence number etc.) that the magnetic stripe of this card records.And, be in the situation of IC-card at the card that inserts, also carry out as required the reading and rewriteeing of IC chip recorded data of this card.In the IC chip, record Biont information (register information) as the possessory user of this card etc.And card and detail form handling part 6 have transaction content are printed to printing section (not shown) on the detail form.Card and detail form handling part 6 will have been printed the detail form of transaction content and emit from the detail form discharge port 6B that is arranged on the main body front.
Bankbook handling part 7 is to be taken into the bankbook that inserts to the bankbook insert port 7A that is arranged on the main body front, and to have the printing section (not shown) of this bankbook being printed the transaction resume.And bankbook handling part 7 also has: the page or leaf roll-up mechanism, roll the page or leaf of the bankbook that is taken into; Bar code reader reads the bar code of the expression page or leaf sequence number that is printed on the bankbook; And magnetic head, read the bankbook information (financial institution's sequence number, shop sequence number, account sequence number etc.) that sticks on the magnetic stripe on the bankbook and record.
And Biont information reading part 8 has the Biont information read sensor 8A that is arranged on the main body front.This Biont information read sensor 8A reads user's finger vena pattern.Herein, as Biont information read sensor 8A, take the sensor that reads the finger vena pattern as example, but also can be the sensor that reads the Biont information of other kinds such as palm vein, iris, retina.The user's that 8 pairs of Biont information reading parts are read by Biont information read sensor 8A Biont information (reading information) contrasts with the Biont information (register information) that the IC chip of card records, and whether the owner who authenticates user and card according to its similar degree is same personage.And 9 pairs of Department of Communication Forces are controlled with the communicating by letter of host apparatus (not shown) of financial institution via network.
Then, the formation of bill handling section 4 described.Fig. 3 is the skeleton diagram that the inside of expression bill handling section consists of.The different boxes 11～14 of Currency Type and recycling box 15 have been taken in by bill handling section 4 in inside.The different boxes 11～14 of Currency Type and recycling box 15 are with respect to the main body loading and unloading freely.The different boxes 11,12 of Currency Type are taken in 10,000 Japanese yen paper currencies.The different boxes 13 of Currency Type are taken in 1,000 Japanese yen paper currencies.The different boxes 14 of Currency Type are taken in 2,000 Japanese yen paper currencies and 5,000 Japanese yen paper currencies.The different boxes 15 of Currency Type are taken in and are judged as the bank note that can not be used for transaction.The bank note that the bank note (2,000 Japanese yen paper currencies and 5,000 Japanese yen paper currencies) that the different boxes 14 of Currency Type are taken in and recycling box 15 are taken in is not utilized as the bank note of withdrawing the money.Therefore, for the different boxes 14 of Currency Type and recycling box 15, can be the formation with eliminating mechanism of bank note.
And bill handling section 4 has the interim reserve part 16 that deposit bank note etc. is taken in temporarily, kept.And, have the bank note carrying channel 17 that depositing and drawing port 4A, the different boxes 11～14 of Currency Type, recycling box 15 and interim reserve part 16 are linked.Bill handling section 4 has along the bank note conveying unit (not shown) of this bank note carrying channel 17 conveyance bank note.And the bank note conveying unit is controlled the conveyance destination of the bank note of institute's conveyance to controlling at the set baffle plates such as take-off point of bank note carrying channel 17.And bill handling section 4 has along the Currency Type of the bank note of 17 conveyances of bank note carrying channel and the paper money recognition unit 20 that the true and false is identified.20 pairs of each bank note along 17 conveyances of bank note carrying channel in paper money recognition unit are identified its true and false.
Fig. 4 is the block diagram of formation of the major part of expression paper money recognition unit.Paper money recognition unit 20 has control part 21, illuminating part 22, light accepting part 23, test section 24, identification part 25, reservoir 26 and input and output section 27.The fluorescence radiation pattern based on fluorescent material that the 20 pairs of bank note in this paper money recognition unit have detects, and identifies the true and false of bank note based on this fluorescence radiation pattern.The action of the each several part of 21 pairs of paper money recognition unit 20 of control part is controlled.
As shown in Figure 5, illuminating part 22, light accepting part 23 clip bank note carrying channel 17 and relatively configuration.Illuminating part 22 has the first luminophor 22A of the light that shines the first wavelength and the second luminophor 22B that shines the light of second wave length.Illuminating part 22 for example is dual wavelength LD or dual wavelength LED.The light wavelength (the first wavelength) of the first luminophor 22A irradiation is the wavelength that prevents from forging the fluorescent material luminous (hereinafter referred to as fluorescence radiation) that the employed ink of printing of pattern of usefulness has that makes the bank note of the object of distinguishing true from false.And the light wavelength (second wave length) of the second luminophor 22B irradiation is the wavelength roughly the same with the wavelength of the light (hereinafter referred to as secondary light) of the fluorescence radiation of the bank note of identifying object.
And light accepting part 23 is photodiodes.Former configuration at light accepting part 23 has optical filter 23A.This optical filter 23A is that the wave band of the light that passes through is near the wavelength of secondary light, blocks the light of other wavelength.
In addition, the light of above-mentioned the first luminophor 22A irradiation is blocked by this optical filter 23A.And the light of above-mentioned the second luminophor 22B irradiation is not blocked by this optical filter 23A, and passes through.
The true and false of this bank note is identified based on test section 24 detected fluorescence radiation patterns in identification part 25.The employed parameter of action control of reservoir 26 these paper money recognition unit 20 of storage etc.Input and output section 27 notifies the recognition result of identification part 25 to bank note handling part 24.
Then, the molar behavior of the ATM1 that simple declaration present embodiment is related.Herein, the processing sequence of the credit transaction of simple declaration ATM1 and the transaction of withdrawing the money.
In credit transaction, each 1 ground of deposit bank note that ATM1 will put among the depositing and drawing port 4A is discharged on the bank note carrying channel 17, by paper money recognition unit 20 identification Currency Type and the true and falses.Bill handling section 4 will be identified its Currency Type and be the deposit bank note of genuine note, and conveyance also is received in the interim reserve part 16.On the other hand, bill handling section 4 can not identify Currency Type or send depositing and drawing port 4A back to at least one party's of genuine note bank note, return to the user.When having determined amount deposited by the user, ATM1 carries out determined amount deposited is deposited the deposit processing of user's account (account of appointment).It is to notify processing to host apparatus with user's account sequence number and amount deposited that this deposit is processed.And the transaction content printing to this bankbook of accepting is carried out in the distribution or exist that has printed the detail form of transaction content in card and detail form handling part 6 in the handling part 7.
Discharge on each 1 ground of bank note that will be retained in after the bill handling section 4 in the interim reserve part 16, and again by paper money recognition unit 20 identification Currency Type and the true and falses.Bill handling section 4 is for each bank note, and conveyance also is received in the box to the Currency Type of this paper money recognition.The bank note that bill handling section 4 can not identify with Currency Type or at least one party of genuine note, conveyance also is received in the recycling box 15.
And in the transaction of withdrawing the money, ATM1 determines the number of the bank note that each Currency Type is withdrawn the money according to the specified amount of money of withdrawing the money.Bill handling section 4 discharges the bank note of the number of determining to each Currency Type from the different boxes 11～13 of Currency Type, and identifies Currency Type and the true and false by paper money recognition unit 20.Bill handling section 4 can identify Currency Type and for the bank note conveyance of genuine note and be received into depositing and drawing port 4A.On the other hand, can not identify Currency Type or at least one party's of genuine note bank note conveyance and be received into recycling box 15.And, will press on towards when being received in the recycling box 15 at every turn, again discharge 1 bank note from the different boxes 11～13 of Currency Type of discharging this bank note.
When will be according to the bank note containing of the amount of money of withdrawing the money during to depositing and drawing port 4A, ATM1 carries out the processing of withdrawing the money that the account (account of appointment) of the amount of money of withdrawing the money from the user withdrawn the money.This is withdrawn the money and processes is to notify processing to host apparatus with user's account sequence number and the amount of money of withdrawing the money.ATM1 opens the gate that is arranged on depositing and drawing port 4A, and the bank note that is accommodated in this depositing and drawing port 4A is emitted the user.And the transaction content printing to this bankbook of accepting is carried out in the distribution or exist that has printed the detail form of transaction content in card and detail form handling part 6 in the handling part 7.
Herein, the identifying processing of the bank note of paper money recognition unit 20 described.As mentioned above, the fluorescence radiation pattern that the 20 pairs of bank note in this paper money recognition unit have detects, and identifies the true and false of this bank note based on the fluorescence radiation pattern that detects.
Fig. 6 is the process flow diagram that the expression paper money recognition is processed.Paper money recognition unit 20 is that test section 24 makes the first luminophor 22A of illuminating part 22 luminous, shines the light (S1) of the first wavelength.The paper money recognition unit does not make the second luminophor 22B luminous 20 this moments.And test section is controlled the luminous quantity of the first luminophor 22A based on the modified value that calculates in the correcting process described later for 24 this moments.Thus, the illumination of the first wavelength is mapped on the bank note of 17 conveyances of bank note carrying channel.As mentioned above, the light of this first wavelength is the exciting light that fluorescent material that the employed ink of printing of the pattern that prevents from forging usefulness is had carries out fluorescence radiation.
Paper money recognition unit 20, the light pattern that is subjected to by the light in 24 pairs of light accepting parts 23 of test section detects (S2).From the light of the first luminophor 22A irradiation, 23A blocks by optical filter.Therefore, light accepting part 23 is subjected to light to the light from the first luminophor 22A irradiation hardly.On the other hand, by the light from this first luminophor 22A irradiation, the fluorescent material that bank note has carries out fluorescence radiation.The secondary light that this fluorescence radiation produces is not subjected to light by light accepting part 23 by optical filter 23A with blocking.That is, the fluorescence radiation pattern based on fluorescent material that has of 24 pairs of bank note of test section detects.
Paper money recognition unit 20, in identification part 25, template and this fluorescence radiation pattern by test section 24 detected bank note of the fluorescence radiation pattern that will store each Currency Type compare, and identify its Currency Type and the true and false (S3).
In addition, the template stores of the fluorescence radiation pattern of the bank note of each Currency Type is in reservoir 26.And the identification of Currency Type also can be that the image of this bank note is made a video recording, and sets according to this photographed images.And, about the identification of the true and false of bank note, not only by above-mentioned fluorescence radiation pattern, also can with the recognition combination based on known reflected light pattern and transmitted light pattern, synthetically judge.
Paper money recognition unit 20 is to bill handling section 4 notice recognition results (S4).Bill handling section 4 determines the conveyance destination of this bank note based on the recognition result of 20 notices from the paper money recognition unit.The bank note conveying unit arrives this bank note conveyance the conveyance destination that determines herein.
Following correcting process is carried out in the reduction of the accuracy of detection of this fluorescence radiation pattern that this paper money recognition unit 20 causes for the dirt of the optical filter 23A that suppresses to be configured in light accepting part 23 fronts.Fig. 7 is the process flow diagram of this correcting process of expression.Between the luminous quantity of the first luminophor 22A that illuminating part 22 possesses and the luminous quantity of the second luminophor 22B, has the correlationship that Fig. 8 represents.Fig. 8 be the electric power that will the first luminophor 22A and the second luminophor 22B be supplied with as common parameter, the figure of the correlationship of the luminous quantity of expression this moment.For example, when the size of the electric power that the first luminophor 22A and the second luminophor 22B are supplied with was " PW1 ", the luminous quantity of the first luminophor 22A was PA1, and the luminous quantity of the second luminophor 22B is PB1.
Paper money recognition unit 20 will represent that the related function F of correlationship shown in Figure 8 stores in the reservoir 26.And the reference value of output of light accepting part 23 of detection that can suitably carry out the fluorescence radiation pattern of bank note stores in the reservoir 26.
Correcting process shown in Figure 7 is carried out before also can beginning in the identification of bank note of the transaction of depositing and withdrawing, also can be suitable timing (number of the bank note of processing reaches the timing of regulation dress, passed through the timing of stipulated time etc. from the execution of last time).This correcting process is carried out under the state that does not have bank note between illuminating part 22 and the light accepting part 23.
Paper money recognition unit 20 is that test section 24 makes the second luminophor 22B of illuminating part 22 luminous, the light (S11) of irradiation second wave length.The paper money recognition unit does not make the first luminophor 22A luminous 20 this moments.Light from the second wave length of the second luminophor 22B irradiation by optical filter 23A, is subjected to light by light accepting part 23.
PWA＝PWB
Situation under, will S12 detect the protection supply capability PWB get final product as modified value.
And, be set as in the reference value that reservoir 26 is stored in the situation of reference value of output of light accepting part 23, based on the related function F of expression correlationship shown in Figure 8 and at the detected supply capability PWB of S12, calculate the supply capability PWA that the first luminophor 22A is supplied with, and it is got final product as modified value.
The modified value that paper money recognition unit 20 will calculate in S13 stores (S14) in the reservoir 26 into, finishes this processing.
Paper money recognition unit 20 is in above-mentioned paper money recognition is processed, and based on the reference value that this reservoir 26 is stored, control is to the supply capability of the first luminophor 22A.Therefore, paper money recognition unit 20 is not subjected to the deteriorated impact of the sensitivity of the dirt of optical filter 23A, light accepting part 23 that temporal evolution causes, and can carry out the detection to the fluorescence radiation pattern of the bank note of identifying object.Thus, can suppress the reduction of the accuracy of identification of bank note, and realize the raising of reliability.
And, in the above description, the supply capability that test section 24 is adjusted the second luminophor 22B in S12, and the supply capability PWB the when output of light accepting part 23 become the reference value that reservoir 26 stores detects, but also can make the supply capability to the second luminophor 22B is pre-sizing, and calculates the processing that the output that makes light accepting part 23 at this moment becomes the magnification ZB of appropriate value (reference value).
Then, test section 24 comes calcuating correction value based on the magnification ZB that calculates herein.The modified value of herein calculating is the magnification ZA that when the identification of bank note the output of light accepting part 23 is amplified.About this magnification ZA, also can set reference value based on correlationship shown in Figure 8, so that
ZA＝ZB。
In addition, in the situation of the reference value of the output that this reference value is set as light accepting part 23, based on the related function F of expression correlationship shown in Figure 8 and the magnification ZB that this time calculates, calculate magnification ZA, and it is got final product as modified value.
At this moment, paper money recognition unit 20 is not subjected to the deteriorated impact of the sensitivity of the dirt of optical filter 23A, light accepting part 23 that temporal evolution causes yet, and can carry out the detection to the fluorescence radiation pattern of the bank note of identifying object.Thus, can suppress the reduction of the accuracy of identification of bank note, and realize the raising of reliability.
In addition, in the above description, be illustrated as an example of the situation that the present invention is used in ATM example, but the present invention also goes for the device beyond the ATM.
Claims (5)
1. optical sensor, for along carrying channel by the paper sheet of conveyance, detect the fluorescence radiation pattern that fluorescent material that this paper sheet has forms, it is characterized in that,
Possess:
Illuminating part and light accepting part, clip above-mentioned carrying channel and relatively configuration, above-mentioned illuminating part has the irradiation above-mentioned fluorescent material of excitation and makes the second luminophor of the light of first luminophor of light of its first luminous wavelength second wave length different from above-mentioned the first wavelength with irradiation;
Optical filter is configured between above-mentioned light accepting part and the above-mentioned carrying channel, blocks the light of above-mentioned the first wavelength;
The modified value calculating part, when not having paper sheet between above-mentioned illuminating part and above-mentioned light accepting part, the detected value of the above-mentioned light accepting part that produces according to the light of the second wave length of above-mentioned the second luminophor irradiation calculates modified value; And
Test section, the modified value that calculates based on above-mentioned modified value calculating part, above-mentioned the first luminophor shines the light of the first wavelength to the paper sheet along the conveyance of above-mentioned carrying channel institute, and by above-mentioned light accepting part the luminous pattern that the fluorescent material of sneaking in this paper sheet forms is detected.
2. optical sensor as claimed in claim 1 is characterized in that,
Above-mentioned optical filter sees through the light of the emission wavelength of the light of above-mentioned second wave length and above-mentioned fluorescent material.
3. optical sensor as claimed in claim 1 is characterized in that,
Above-mentioned test section is controlled the luminous quantity of above-mentioned the first luminophor based on the modified value that above-mentioned modified value calculating part calculates.
4. optical sensor as claimed in claim 1 is characterized in that,
Above-mentioned test section is revised the output of above-mentioned light accepting part based on the modified value that above-mentioned modified value calculating part calculates.
5. a recognition unit is characterized in that,
Possess: optical sensor, for along carrying channel by the paper sheet of conveyance, detect the fluorescence radiation pattern that fluorescent material that this paper sheet has forms; With
This paper sheet based on the detected fluorescence radiation pattern of above-mentioned optical sensor, is identified in the identification part;
Above-mentioned optical sensor possesses:
Illuminating part and light accepting part, clip above-mentioned carrying channel and relatively configuration, above-mentioned illuminating part has the irradiation above-mentioned fluorescent material of excitation and makes the second luminophor of the light of first luminophor of light of its first luminous wavelength second wave length different from above-mentioned the first wavelength with irradiation;
Optical filter is configured between above-mentioned light accepting part and the above-mentioned carrying channel, blocks the light of above-mentioned the first wavelength;
The modified value calculating part, when not having paper sheet between above-mentioned illuminating part and above-mentioned light accepting part, the detected value of the above-mentioned light accepting part that produces based on the light of the second wave length of above-mentioned the second luminophor irradiation calculates modified value; And
Test section, the modified value that calculates based on above-mentioned modified value calculating part, above-mentioned the first luminophor shines the light of the first wavelength to the paper sheet along the conveyance of above-mentioned carrying channel institute, and by above-mentioned light accepting part the luminous pattern that the fluorescent material of sneaking in this paper sheet forms is detected.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2009290473A JP4979759B2 (en) | 2009-12-22 | 2009-12-22 | Optical sensor and identification unit |
| JP290473/2009 | 2009-12-22 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102129738A CN102129738A (en) | 2011-07-20 |
| CN102129738B true CN102129738B (en) | 2013-01-02 |
Family
ID=44267810
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010588511.1A Expired - Fee Related CN102129738B (en) | 2009-12-22 | 2010-12-10 | Optical sensor and regonization unit |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP4979759B2 (en) |
| CN (1) | CN102129738B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5715919B2 (en) * | 2011-09-27 | 2015-05-13 | 日立オムロンターミナルソリューションズ株式会社 | Paper sheet identification device |
| JP5825070B2 (en) | 2011-11-21 | 2015-12-02 | セイコーエプソン株式会社 | Printing apparatus and printing method |
| JP6009992B2 (en) * | 2013-06-03 | 2016-10-19 | 日立オムロンターミナルソリューションズ株式会社 | Paper sheet identification device and optical sensor device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1517955A (en) * | 2003-01-20 | 2004-08-04 | 旭精工株式会社 | Bank-note detecting unit for back-note identification device |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6130866A (en) * | 1984-07-23 | 1986-02-13 | Canon Inc | Method and apparatus for reading picture |
| JPS62111376A (en) * | 1985-11-11 | 1987-05-22 | 富士電機株式会社 | Optical identification system for paper money |
| JP2003067805A (en) * | 2001-08-28 | 2003-03-07 | Hitachi Ltd | Device for discriminating truth or falsehood of sheet paper |
| JP2005215784A (en) * | 2004-01-27 | 2005-08-11 | Nidec Copal Corp | Fluorescence detection apparatus |
| JP2007066059A (en) * | 2005-08-31 | 2007-03-15 | Toshiba Corp | Fluorescent reference member, and fluorescence inspection device |
-
2009
- 2009-12-22 JP JP2009290473A patent/JP4979759B2/en not_active Expired - Fee Related
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2010
- 2010-12-10 CN CN201010588511.1A patent/CN102129738B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1517955A (en) * | 2003-01-20 | 2004-08-04 | 旭精工株式会社 | Bank-note detecting unit for back-note identification device |
Non-Patent Citations (3)
| Title |
|---|
| JP昭62-111376A 1987.05.22 |
| JP特开2003-67805A 2003.03.07 |
| JP特开2005-215784A 2005.08.11 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102129738A (en) | 2011-07-20 |
| JP2011133956A (en) | 2011-07-07 |
| JP4979759B2 (en) | 2012-07-18 |
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