CN114429690A - Multispectral paper currency inspection device and currency counter - Google Patents
Multispectral paper currency inspection device and currency counter Download PDFInfo
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- 238000007689 inspection Methods 0.000 title claims description 16
- 238000005286 illumination Methods 0.000 claims abstract description 48
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- 238000012360 testing method Methods 0.000 claims description 6
- 238000001514 detection method Methods 0.000 abstract description 20
- 230000005540 biological transmission Effects 0.000 abstract description 12
- 230000000149 penetrating effect Effects 0.000 description 4
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- G—PHYSICS
- G07—CHECKING-DEVICES
- G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
- G07D7/00—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency
- G07D7/06—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency using wave or particle radiation
- G07D7/12—Visible light, infrared or ultraviolet radiation
- G07D7/121—Apparatus characterised by sensor details
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06M—COUNTING MECHANISMS; COUNTING OF OBJECTS NOT OTHERWISE PROVIDED FOR
- G06M7/00—Counting of objects carried by a conveyor
- G06M7/02—Counting of objects carried by a conveyor wherein objects ahead of the sensing element are separated to produce a distinct gap between successive objects
- G06M7/06—Counting of flat articles, e.g. of sheets of paper
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- G—PHYSICS
- G07—CHECKING-DEVICES
- G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
- G07D7/00—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency
- G07D7/06—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency using wave or particle radiation
- G07D7/12—Visible light, infrared or ultraviolet radiation
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- Inspection Of Paper Currency And Valuable Securities (AREA)
Abstract
The invention discloses a banknote detection device, which comprises a banknote conveying channel for conveying banknotes, a banknote detection module and a control system, wherein the banknote detection module is arranged on the banknote conveying channel, the control system is used for controlling the operation of the banknote detection module, the banknote detection module comprises a first multispectral light source module, an illumination signal acquisition module and a second multispectral light source module, the first multispectral light source module and the illumination signal acquisition module are fixedly arranged on the banknote conveying channel, the first multispectral light source module and the illumination signal acquisition module are arranged on the same side of the banknote conveying channel, the illumination signal acquisition module and the second multispectral light source module are respectively arranged on two sides of the banknote conveying channel, and the illumination signal acquisition module is used for receiving and acquiring reflected light signals generated by the banknote irradiated by the first multispectral light source module or receiving and acquiring transmitted light signals generated by the banknote irradiated by the second multispectral light source module and outputting corresponding electric signals. The invention can realize double counterfeit discrimination of transmission and reflection, and has higher counterfeit discrimination precision and more sensitive recognition.
Description
Technical Field
The invention relates to the field of financial equipment, in particular to a multispectral paper money inspection device and a paper money counter.
Background
The existing currency counting and checking machine usually adopts a currency identification method aiming at an anti-counterfeiting part, and detects an anti-counterfeiting area at a fixed point, so that the currency is single.
The paper money discrimination device comprises a lamp tube fixing frame, a plurality of light emitting diodes fixed on the lamp tube fixing frame, a sensor fixing frame and an information analysis processing module, wherein the two groups of light emitting diodes are arranged in the width direction of the lamp tube fixing frame and are respectively a transmission light group and a reflection light group, the transmission light group is fixedly provided with a corresponding photosensitive sensor on the sensor fixing frame, the light emitting diodes of the reflection light group and the photosensitive sensor are fixedly arranged on the lamp tube fixing frame, a group of lenses are arranged between the lamp tube fixing frame and the paper money, the scheme realizes double discrimination from transmission and reflection by alternately working through two groups of light sources, and meanwhile, the discrimination precision is higher by utilizing the characteristics of the lenses, the discrimination is more sensitive, and the application range is wider.
The defects of the prior art are as follows: 1. the transmission light group and the reflection light group are arranged on the width direction of the lamp tube fixing frame together, so that too much use space is occupied, and the currency discrimination function is easy to be simplified. 3. The number of the used photosensitive sensors is large, the cost is high, and the detection results of different sensors have certain difference, so that the false identification precision is reduced.
Disclosure of Invention
The invention aims to solve the problems in the prior art and provides a multispectral paper currency testing device which can realize double counterfeit identification of transmission and reflection, so that the counterfeit identification precision is higher and the identification is more sensitive.
The invention adopts the technical scheme for solving the technical problems that: a multispectral paper money inspection device comprises a paper money conveying channel used for conveying paper money, a paper money inspection module arranged on the paper money conveying channel and a control system used for controlling the paper money inspection module to work, wherein the paper money inspection module comprises a first multispectral light source module, an illumination signal acquisition module and a second multispectral light source module which are fixedly arranged on the paper money conveying channel, the first multispectral light source module and the illumination signal acquisition module are arranged on the same side of the paper money conveying channel, the illumination signal acquisition module and the second multispectral light source module are respectively arranged on two sides of the paper money conveying channel, and the illumination signal acquisition module is used for receiving and acquiring reflected light signals generated when the first multispectral light source module irradiates the paper money or receiving and acquiring transmitted light signals when the second multispectral light source module irradiates the paper money and outputting corresponding electric signals.
For further improvement, the first multispectral light source module and the second multispectral light source module are RGB light sources, and the illumination signal acquisition module is an RGB color sensor.
Further perfecting, the RGB light source is RGB three-color integrative lamp or RGB three-color combination lamp that has red luminescent light, green luminescent light and blue luminescent light.
Further perfection, the RGB light source is a laser lamp or an LED lamp.
Further perfection, the first multispectral light source module, the illumination signal acquisition module and the second multispectral light source module are respectively provided with a first condenser lens, a diffuser lens and a second condenser lens.
Further perfecting, the control system comprises a modulation circuit module, an information converter module and a control module, wherein the control module is respectively and electrically connected with the modulation circuit module and the information converter module, the modulation circuit module is respectively and electrically connected with the first multispectral light source module and the second multispectral light source module, and the information converter module is electrically connected with the illumination signal acquisition module.
Further perfecting, control system still includes and sets up paper money feeding mechanism and the display module inside and outside the paper money feeding passageway respectively, paper money feeding mechanism and display module all with control module electric connection.
Further perfection, a counting currency machine, have foretell paper currency verifying attachment on it, the usage space that paper currency verifying attachment occupy is little, makes its paper money discrimination function more accurate and diversified.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the scheme, by utilizing the dual principle of light transmission and reflection, the light rays irradiate on the paper money, the near colors on the paper money are detected and compared, the discrimination is higher, the paper money is not easily affected by oil stains and defects of the paper money, and the detection is more efficient and accurate;
2. the scheme adopts the RGB light source and the RGB color sensor, can emit and receive light with corresponding wavelength, has good consistency, reduces the influence of stray light, further enhances the collection sensitivity of light signals, improves the false distinguishing precision, and has higher accuracy, stronger sensitivity and lower purchasing cost;
3. the reflecting light source and the penetrating light source are respectively arranged on two sides of the paper money, so that the use space on one side is saved, the paper money discriminating function can be more diversified, the reflecting light source and the penetrating light source are not easy to interfere with each other due to traffic work between the reflecting light source and the penetrating light source, multi-point double-light detection is realized by arranging a plurality of groups of paper money detecting devices, and the paper money discriminating device can be suitable for full-width detection of thickness, face value, anti-counterfeiting, checking and scoring of paper money of various countries in the world;
4. according to the scheme, the illumination signal acquisition module is used for receiving the reflected light and the transmitted light, so that the installation and manufacturing cost is saved, the receiving difference of detection results of different sensors is eliminated, and the counterfeit identification precision of the device is effectively improved.
Drawings
FIG. 1 is a schematic diagram of the working principle of the present invention;
FIG. 2 is a schematic view of an illumination path according to the present invention;
FIG. 3 is a schematic view of the illumination path used in various combinations of the present invention;
FIG. 4 is a schematic diagram of the optical path of a prior art solution;
description of reference numerals: 1. the device comprises a first multispectral light source module, a second multispectral light source module and an illumination signal acquisition module. 3. The device comprises a second multispectral light source module, a first condenser, a second multispectral light source module, a first diffuser, a second diffuser and a second condenser, wherein the second multispectral light source module is 4, the first condenser is 5, the astigmatic lens is 6, and the second condenser is 6.
Detailed Description
The invention is further described below with reference to the accompanying drawings:
referring to fig. 1, the present embodiment: a multispectral paper currency testing device comprises a paper currency conveying channel for conveying paper currency, a paper currency testing module arranged on the paper currency conveying channel and a control system for controlling the paper currency testing module to work, wherein the paper currency testing module comprises a first multispectral light source module, an illumination signal acquisition module and a second multispectral light source module which are fixedly arranged on the paper currency conveying channel, the first multispectral light source module and the illumination signal acquisition module are arranged on the same side of the paper currency conveying channel, the illumination signal acquisition module and the second multispectral light source module are respectively arranged on two sides of the paper currency conveying channel, the first multispectral light source module and the second multispectral light source module are arranged in the vertical direction of the paper currency, light beams emitted by the first multispectral light source module can be perpendicular to the paper currency or form a certain included angle with the paper currency, and the illumination signal acquisition module is used for receiving and acquiring reflected light signals generated by the first multispectral light source module on the paper currency, or receiving and collecting transmission light signals when the second multispectral light source module irradiates the paper money, and outputting corresponding electric signals.
The working principle is as follows: after the paper money enters the checking machine, the paper money is conveyed and checked through the paper money conveying channel, when the paper money passes between the first multispectral light source module and the second multispectral light source module, the control system controls the first multispectral light source module and the second multispectral light source module to alternately scan the paper money, the first multispectral light source module alternately emits RGB tricolor light to irradiate in a designated site area of the paper money, generated reflected light is received by the illumination signal acquisition module, then the second multispectral light source module alternately emits RGB tricolor light to irradiate in a corresponding site area of the paper money, generated transmitted light is received by the illumination signal acquisition module, the transmitted light is uniformly fed back to the control system by the illumination signal acquisition module, the reliability of received data is high, errors are small, two groups of data are mutually contrasted, and the identification precision is improved, the scheme adopts a dual principle of transmission and reflection, the detection and comparison of the similar color, material and thickness of the same monitoring point on the paper money can be carried out (the related detection method of the paper money can refer to patent documents CN107134046B and CN105447955A), the discrimination is higher, the paper money is not easily affected by oil stain and defect of the paper money, the detection is more efficient and accurate, the identification precision is ensured, various paper money versions and various counterfeit money can be identified, the paper money discrimination and detection device can be suitable for the purposes of full-width detection of thickness, face value, anti-counterfeiting, checking, scoring and the like of the paper money of various countries, the first multispectral light source module and the second multispectral light source module can be used in a complementary mode, one fault does not affect the normal use of the checking machine as long as the other fault works normally, and the reliability is high. The circuit technologies of the above-mentioned electronic components, such as power supply, light-emitting signal modulation, signal reception, analog-to-digital conversion, and data transmission control, belong to the prior art or the common general knowledge, and are not described herein again.
The first multispectral light source module and the second multispectral light source module are RGB light sources, and the illumination signal acquisition module is an RGB color sensor. The RGB light source and the RGB color sensor can emit and receive light with corresponding wavelengths, have good consistency, stop the interference of a non-receiving inner wavelength light source, reduce the influence of stray light, further enhance the collection sensitivity of optical signals, and improve the accuracy and the false identification precision.
The RGB light source is the integrative lamp of RGB three-colour or has the RGB three-colour combination lamp of red luminescent light, green luminescent light and blue luminescent light. The RGB three-color integrated lamp has high integration level and small volume, and the RGB three-color light is mixed and displayed into white light, so the manufacturing requirement is higher. The integrative lamp of RGB tricolor can select for use the bulb that can send tricolor light simultaneously under same current size or can send the bulb of different chromatic light according to different current size. The RGB three-color combined lamp is convenient to manufacture, can be used in a mixed mode or used independently and alternately, and therefore the sensitivity of single-color detection is improved. During detection, the paper money is scanned by one group of six paths in one period, the three paths of red, green and blue light rays are emitted to the illumination signal acquisition module alternately from top to bottom, the light rays are not easy to interfere with each other, and the identification precision of the paper money is higher.
The RGB light source is a laser lamp or an LED lamp. Compared with a common light source, the laser lamp is good in monochromaticity and directivity, the focus position is more accurate, the detection precision can be improved, and the cost for erecting the lens is saved. The LED lamp can directly convert electricity into light, has high luminous efficiency, and different semiconductor P-N junctions can directly emit red, yellow, blue, green, cyan, orange, purple and white light. The LED light source has strong directivity, and the optical characteristics of the LED need to be considered in the design of the lamp. The paper currency inspection module sets up at least two sets ofly, can detect paper currency in different positions, different angles, and gathers the light variation printing ink colour change signal on the paper currency, improves the discrimination to paper currency.
As shown in fig. 2, the first multispectral light source module, the illumination signal collection module and the second multispectral light source module are respectively provided with a first condenser lens, a diffuser lens and a second condenser lens. The first condenser lens can assemble the light emitted by the first multispectral light source module to a specified site area, the irradiation range can be reduced, the reflection effect is improved, the second condenser lens can assemble the light emitted by the multispectral light source module to the corresponding site area, the irradiation intensity can be improved, the penetration effect is improved, the light signal intensity collected by the illumination signal collection module is enhanced, the false distinguishing precision is improved, the diffuser lens can uniformly disperse reflected light or transmitted light to the illumination signal collection module, the receiving range can be enlarged, the fault tolerance is good, and the receiving effect and the measurement precision can be effectively improved. The inclined positions of the first multispectral light source module, the illumination signal acquisition module, the second multispectral light source module, the first condenser lens, the astigmatic lens and the second condenser lens can be freely arranged according to requirements. As shown in the attached figure 3, the paper money inspection module can be combined up and down to improve the accuracy of paper money identification. The distances between the first condenser lens, the diffuser lens and the second condenser lens and the surface of the paper money are all 3-5 mm. The angle of inclination of the first condenser lens and the first multispectral light source module can be adjusted through the first direction adjusting mechanism to obtain different light reflection angles, the angle of inclination of the second condenser lens and the second multispectral light source module can be adjusted through the second direction adjusting mechanism to obtain different light transmission angles, the angle of inclination of the astigmatic lens and the illumination signal acquisition module can be adjusted through the second direction adjusting mechanism to obtain different light receiving angles so as to better receive light signals, and horizontal moving mechanisms are further arranged on the astigmatic lens and the illumination signal acquisition module to adjust the distance between the first multispectral light source module and the illumination signal acquisition module and improve the accuracy of signal receiving.
The control system comprises a modulation circuit module, an information converter module and a control module, wherein the control module is respectively and electrically connected with the modulation circuit module and the information converter module, the modulation circuit module is respectively and electrically connected with the first multispectral light source module and the second multispectral light source module, and the information converter module is electrically connected with the illumination signal acquisition module. The control module controls the modulation circuit module to enable the multispectral light source module to emit light, and the information converter module is used for receiving and converting light signals collected by the illumination signal collection module and sending processed data to the control module. The control module can receive and process the information fed back by the illumination signal acquisition module, thereby realizing the identification of the paper money.
The control system further comprises a paper money feeding mechanism and a display module which are arranged inside and outside the paper money feeding channel respectively, and the paper money feeding mechanism and the display module are electrically connected with the control module. The bill conveying mechanism is used for conveying paper money to pass through the bill conveying channel, and the display module is used for receiving the data sent by the control module and displaying images of the data. The paper money feeding mechanism is electrically connected with the control module, the control module can control the modulation circuit module to perform pulse modulation according to the paper money feeding speed of the paper money feeding mechanism, the multispectral light source module is driven to emit light alternately, the control module can display the inspection result through the display module, and the display module is a touch screen, a liquid crystal display screen or a nixie tube.
The banknote sending channel is also provided with an ultraviolet light emitter and a fluorescent ultraviolet sensor which are respectively and electrically connected with the modulation circuit module and the information converter module, so that ultraviolet light inspection can be performed on banknotes, and the accuracy and reliability of the banknote authenticity inspection of the banknote sending channel can be improved.
As shown in fig. 4, a prior art for banknote inspection (similar technology can refer to patent document CN205750988U), which comprises a multispectral light source module and two illumination signal acquisition modules, wherein the two illumination signal acquisition modules are respectively disposed at two sides of a banknote feeding channel, and the two illumination signal acquisition modules respectively receive and acquire reflected light signals and penetrating light signals generated by the multispectral light source module irradiating banknotes at the same time, and output corresponding electrical signals. The multispectral light source module sends the same position point on a bundle of light detection paper money simultaneously, the two illumination signal acquisition modules receive reflected light and transmitted light generated by the same bundle of light respectively, the emission and transmission phenomena are not easy to control, mutual interference phenomena are easy to generate, and the two illumination signal acquisition modules are separated from each other to receive signals, so that the situation of poor receiving is easy to generate. Compared with the scheme of the invention, the number of the used light sources is small, the number of the acquisition sensors is large, the problems of high cost and low illumination intensity received by the sensors are caused, and the detection accuracy of the paper money is reduced.
While the invention has been shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the scope of the appended claims.
Claims (8)
1. The utility model provides a multispectral paper currency verifying attachment, is including the control system that is used for the paper currency passageway that send that the paper currency carried, sets up the paper currency inspection module and controls paper currency inspection module work on sending the paper currency passageway, its characterized in that: the paper money inspection module comprises a first multispectral light source module, an illumination signal acquisition module and a second multispectral light source module which are fixedly installed on a paper money conveying channel, the first multispectral light source module and the illumination signal acquisition module are arranged on the same side of the paper money conveying channel, the illumination signal acquisition module and the second multispectral light source module are respectively arranged on two sides of the paper money conveying channel, and the illumination signal acquisition module is used for receiving and acquiring reflected light signals generated when the first multispectral light source module irradiates paper money or receiving and acquiring transmitted light signals when the second multispectral light source module irradiates paper money and outputting corresponding electric signals.
2. A multispectral banknote validator as claimed in claim 1 wherein: the first multispectral light source module and the second multispectral light source module are RGB light sources, and the illumination signal acquisition module is an RGB color sensor.
3. A multispectral banknote validator as claimed in claim 2 wherein: the RGB light source is an RGB three-color integrated lamp or an RGB three-color combined lamp with a red light-emitting lamp, a green light-emitting lamp and a blue light-emitting lamp.
4. A multispectral banknote validator as claimed in claim 3 wherein: the RGB light source is a laser lamp or an LED lamp.
5. A multispectral banknote validator as claimed in claim 1 wherein: and the first multispectral light source module, the illumination signal acquisition module and the second multispectral light source module are respectively provided with a first condenser lens, a diffuser lens and a second condenser lens.
6. A multispectral banknote validator as claimed in claim 1 wherein: the control system comprises a modulation circuit module, an information converter module and a control module, wherein the control module is electrically connected with the modulation circuit module and the information converter module respectively, the modulation circuit module is electrically connected with the first multispectral light source module and the second multispectral light source module respectively, and the information converter module is electrically connected with the illumination signal acquisition module.
7. A multispectral banknote validator as claimed in claim 6 wherein: the control system further comprises a paper money feeding mechanism and a display module which are arranged inside and outside the paper money feeding channel respectively, and the paper money feeding mechanism and the display module are electrically connected with the control module.
8. A currency count machine which characterized in that: having thereon a banknote testing device according to any one of claims 1-7.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210251239.0A CN114429690A (en) | 2022-03-15 | 2022-03-15 | Multispectral paper currency inspection device and currency counter |
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| CN202210251239.0A CN114429690A (en) | 2022-03-15 | 2022-03-15 | Multispectral paper currency inspection device and currency counter |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0314195A (en) * | 1989-06-13 | 1991-01-22 | Nec Corp | Optical discriminator for note |
| CN102930631A (en) * | 2011-08-09 | 2013-02-13 | 佳能元件股份有限公司 | Image sensor unit and image reading apparatus |
| CN205750988U (en) * | 2016-05-17 | 2016-11-30 | 北京新岸线数字图像技术有限公司 | A kind of paper money discrimination device |
| CN107093258A (en) * | 2017-04-27 | 2017-08-25 | 深圳怡化电脑股份有限公司 | Module for recognizing paper money and automatic depositing-withdrawing equipment |
| CN210324349U (en) * | 2019-11-01 | 2020-04-14 | 温州铂芯电子科技有限公司 | Paper currency false distinguishing device that suitability is strong |
| CN216817478U (en) * | 2022-03-15 | 2022-06-24 | 温州铂芯电子科技有限公司 | Paper money detection device based on two optical phenomena and paper money counter |
-
2022
- 2022-03-15 CN CN202210251239.0A patent/CN114429690A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0314195A (en) * | 1989-06-13 | 1991-01-22 | Nec Corp | Optical discriminator for note |
| CN102930631A (en) * | 2011-08-09 | 2013-02-13 | 佳能元件股份有限公司 | Image sensor unit and image reading apparatus |
| CN205750988U (en) * | 2016-05-17 | 2016-11-30 | 北京新岸线数字图像技术有限公司 | A kind of paper money discrimination device |
| CN107093258A (en) * | 2017-04-27 | 2017-08-25 | 深圳怡化电脑股份有限公司 | Module for recognizing paper money and automatic depositing-withdrawing equipment |
| CN210324349U (en) * | 2019-11-01 | 2020-04-14 | 温州铂芯电子科技有限公司 | Paper currency false distinguishing device that suitability is strong |
| CN216817478U (en) * | 2022-03-15 | 2022-06-24 | 温州铂芯电子科技有限公司 | Paper money detection device based on two optical phenomena and paper money counter |
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