CN112184984A - Currency detector with adhesive tape detection function - Google Patents
Currency detector with adhesive tape detection function Download PDFInfo
- Publication number
- CN112184984A CN112184984A CN202010910053.2A CN202010910053A CN112184984A CN 112184984 A CN112184984 A CN 112184984A CN 202010910053 A CN202010910053 A CN 202010910053A CN 112184984 A CN112184984 A CN 112184984A
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- light
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- adhesive tape
- tape
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- 238000001514 detection method Methods 0.000 title claims abstract description 113
- 239000002390 adhesive tape Substances 0.000 title claims abstract description 52
- 239000011324 bead Substances 0.000 claims abstract description 23
- 239000011521 glass Substances 0.000 claims description 9
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 6
- 238000012360 testing method Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 238000005259 measurement Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G07—CHECKING-DEVICES
- G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
- G07D7/00—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency
- G07D7/20—Testing patterns thereon
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/95—Investigating the presence of flaws or contamination characterised by the material or shape of the object to be examined
- G01N21/958—Inspecting transparent materials or objects, e.g. windscreens
-
- 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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- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Toxicology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Inspection Of Paper Currency And Valuable Securities (AREA)
Abstract
The invention discloses a currency detecting device with a tape detecting function, which comprises a shell, an image scanning module and a tape detecting module, wherein the image scanning module and the tape detecting module are arranged in the shell, and are adjacently distributed; the adhesive tape detection module comprises a detection circuit board, lamp beads, a photodiode and a detection support, wherein the lamp beads and the photodiode are arranged on the detection circuit board, and the detection support is covered on the adhesive tape detection circuit board. The device integrates pattern scanning detection and adhesive tape detection. The currency detecting device with the adhesive tape detecting function has the functions of scanning images and detecting adhesive tapes, integrates pattern scanning detection and adhesive tape detection, effectively saves space, and adds the function of detecting the adhesive tapes on the original image sensor; the structure is simple, and the cost can be effectively reduced; this sticky tape detection module just has little contained angle to detect, can increase the stability that the sticky tape detected.
Description
Technical Field
The invention relates to the technical field of optical detection equipment, in particular to a currency detecting device with an adhesive tape detection function.
Background
Because the counterfeit identification pattern on the existing financial currency detector mainly scans the special pattern by means of optics, if the transparent adhesive tape is pasted on the currency, the scanning of the special pattern will have deviation, so the currency pasted with the transparent adhesive tape needs to be identified in advance.
The conventional tape inspecting technique mainly uses a thickness sensor as a main inspecting method, which requires a high cost and occupies a large volume (refer to fig. 1). Secondly, the light sensor (please refer to fig. 2) is used for receiving the large included angle to detect the reflective surface of the adhesive tape, but the detection accuracy problem occurs because the flatness of the banknotes is difficult to ensure and the large included angle cannot be ensured during the receiving.
The invention particularly provides a project which can solve the problems of higher cost, larger structure, detection accuracy and incapability of integrating in the existing adhesive tape detection technology, and can effectively reduce the cost, reduce the structure, increase the accuracy and realize integration.
Disclosure of Invention
According to one aspect of the invention, a currency detecting device with a tape detecting function is provided, which comprises a shell, an image scanning module and a tape detecting module, wherein the image scanning module and the tape detecting module are arranged in the shell, and the image scanning module and the tape detecting module are distributed adjacently; the adhesive tape detection module comprises a detection circuit board, lamp beads, a photodiode and a detection support, wherein the lamp beads and the photodiode are arranged on the detection circuit board, and the detection support is covered on the adhesive tape detection circuit board.
The invention provides a currency detecting device with a tape detecting function. In the device, the adhesive tape on the bank note is detected by an adhesive tape detection module consisting of a detection support, a detection circuit board, a lamp bead and a photodiode. In the process, the detection bracket converts scattered light emitted by the lamp bead into parallel light and emits the light to the object to be detected at a required small included angle; the photodiode receives the light energy reflected by the target object to be detected, and whether the adhesive tape is adhered to the target object to be detected is judged according to the voltage of an output tube of the photodiode; meanwhile, the detection support can control the photodiode to receive light energy, and blocks unnecessary stray light outside. The size of the adhesive tape detection module is reduced, the adhesive tape detection module can be embedded into the currency detection device, and the image quality scanned by the original image scanning module is not influenced, so that the integrated functions of image scanning and adhesive tape detection are realized. This sticky tape detection module detection mode utilizes little contained angle to detect the scotch tape, and the characteristic that mainly is the scotch tape smooth surface is littleer or big incident light angle can make it have near 100% reflection of light, so do not receive the size of intermodule passageway and lead to unstable influence behind the paper entering passageway, and the detection ability is comparatively stable.
In some embodiments, the detection bracket comprises a first fixing strip, a second fixing strip and a third fixing strip which are linearly distributed, a first channel is formed between the first fixing strip and the second fixing strip, and a second channel is formed between the second fixing strip and the third fixing strip; the lamp bead is located first passageway, and photodiode is located the second passageway.
Therefore, the detection bracket is composed of a first fixing strip, a second fixing strip and a third fixing strip. A first channel between the first fixing strip and the second fixing strip is an emergent channel of light emitted by the lamp bead; the second channel between the second fixing strip and the third fixing strip is an incident channel of light received by the photodiode. The reflection of a small included angle is realized through the structure, and the detection stability is improved.
In some embodiments, the first channel includes a first straight section and a first inclined section which are communicated with each other, the second channel includes a second straight section and a second inclined section which are communicated with each other, and the first inclined section and the second inclined section are mutually included and distributed in a crossed manner.
Therefore, the first channel can shape and refract the emitted light onto the object to be measured, and the second channel can receive and input the reflected light into the photodiode.
In some embodiments, the light of the lamp bead is red light, blue light, green light, infrared light 850nm or infrared light 940 nm.
Thereby, refraction is achieved by the upper beam type, the wavelength band.
In some embodiments, the image scanning module includes a printed circuit board, a photosensitive wafer, a light guiding rod light source assembly, and a cylindrical lens, wherein the printed circuit board is located at the lowest end of the housing, the photosensitive wafer is disposed on the printed circuit board, the cylindrical lens is located above the photosensitive wafer, the cylindrical lens and the photosensitive wafer transmit light therebetween, and the light guiding rod light source assembly is disposed in the housing and located at one side of the cylindrical lens.
Therefore, the image scanning is carried out through the structure so as to realize the image currency detection function.
In some embodiments, a light guide groove is formed between the printed circuit board and the cylindrical lens, the photosensitive wafer is located in the light guide groove, and the cylindrical lens is in light transmission through the light guide groove.
Therefore, the reflected light of the object to be measured is input into the photosensitive chip through the cylindrical lens and is imaged by the printed circuit board.
In some embodiments, the light bar light source assembly is tilted toward the centerline of the lenticular lens.
Thereby, light refraction for image scanning is achieved.
In some embodiments, the light of the light guide rod light source assembly comprises red light, blue light, green light, infrared light 850nm and infrared light 940 nm.
Thereby, refraction is achieved by the upper beam type, the wavelength band.
In some embodiments, the housing includes a casing and a glass, a cavity for installing the image scanning module and the tape detection module is disposed in the casing, and the glass is disposed at an opening of the casing and encapsulates the image scanning module and the tape detection module.
Therefore, the glass is adopted for packaging, so that the module can be protected, and the light-transmitting function can be realized.
The invention has the beneficial effects that: the currency detecting device with the adhesive tape detecting function provided by the invention has the functions of scanning images and detecting adhesive tapes, and integrates pattern scanning detection and adhesive tape detection. The space is effectively saved, and the function of detecting the adhesive tape is added on the original image sensor. Moreover, the structure is simple, and the cost can be effectively reduced. This sticky tape detection module just has little contained angle to detect, can increase the stability that the sticky tape detected.
Drawings
Fig. 1 is a schematic plan view of a thickness sensor architecture in the related art.
Fig. 2 is a schematic plane structure diagram of a light sensor receiving large-angle architecture in the related art.
Fig. 3 is a schematic plan view of a banknote testing apparatus with a tape detection function according to an embodiment of the present invention.
Fig. 4 is a schematic side view of a tape detection module in the banknote identifier with tape detection shown in fig. 3.
Fig. 5 is a schematic top view of the tape detection module shown in fig. 4.
Fig. 6 is a schematic cross-sectional view of the tape detection module shown in fig. 4.
Fig. 7 is a schematic diagram of a size structure of the tape detection module shown in fig. 4.
Fig. 8 is a schematic diagram of a simulation result of a tape detection channel of the tape detection module shown in fig. 4.
Fig. 9 is a schematic circuit structure diagram of a detection circuit board in the tape detection module shown in fig. 4.
Fig. 10a is a schematic view of a test yellow paper waveform measurement result of the tape detection module shown in fig. 4.
Fig. 10b is a schematic diagram illustrating a measurement result of a test white paper waveform of the tape detection module shown in fig. 4.
Reference numbers in the figures: 1-shell, 11-shell, 12-glass, 2-image scanning module, 21-printed circuit board, 22-photosensitive wafer, 23-light guide rod light source module, 24-cylindrical lens, 3-adhesive tape detection module, 31-detection circuit board, 32-lamp bead, 33-photodiode, 34-detection support, 341-first fixed strip, 342-second fixed strip, 343-third fixed strip, 35-first channel, 351-first straight section, 352-first inclined section, 36-second channel, 361-second straight section and 362-second inclined section.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Fig. 3-7 schematically show a banknote checking apparatus with a tape detection function according to an embodiment of the present invention, including a housing 1, an image scanning module 2, and a tape detection module 3, where the image scanning module 2 and the tape detection module 3 are both disposed in the housing 1, and the image scanning module 2 and the tape detection module 3 are adjacently distributed; the adhesive tape detection module 3 comprises a detection circuit board 31, a lamp bead 32, a photodiode 33 and a detection support 34, wherein the lamp bead 32 and the photodiode 33 are arranged on the detection circuit board 31, and the detection support 34 covers the adhesive tape detection circuit board 31. The circuit diagram of the detection circuit board 31 is shown in fig. 9, the detection circuit board 31 can realize the function of adhesive tape detection, the circuit is simple, each group only needs one transistor and one group of bead 32 circuits to drive, and the cost can be effectively reduced.
The invention provides a currency detecting device with a tape detecting function. In the device, the adhesive tape detection module 3 consisting of the detection support 34, the detection circuit board 31, the lamp bead 32 and the photodiode 33 is used for detecting the adhesive tape on the bank notes. The detection bracket 34 converts the scattered light emitted by the lamp bead 32 into parallel light and emits the light to the target object to be detected at a required small included angle; the photodiode 33 receives the light energy reflected by the target object to be detected, and whether the adhesive tape is stuck on the target object to be detected is judged according to the output tube voltage of the photodiode 33; meanwhile, the detection support 34 can control the photodiode 33 to receive light energy, and block out unwanted stray light. The size of the adhesive tape detection module 3 is reduced, the adhesive tape detection module 3 can be embedded into a currency detection device, and the image quality scanned by the original image scanning module 2 is not influenced, so that the integrated functions of image scanning and adhesive tape detection are realized.
Referring to fig. 6, the detecting bracket 34 includes a first fixing strip 341, a second fixing strip 342, and a third fixing strip 343 that are linearly arranged, a first channel 35 is formed between the first fixing strip 341 and the second fixing strip 342, and a second channel 36 is formed between the second fixing strip 342 and the third fixing strip 343; a plurality of lamp beads 32 are arranged, and the plurality of lamp beads 32 are linearly arrayed in the first channel 35; the photodiode 33 is provided in plural, and the plural photodiodes 33 are linearly arrayed in the second channel 36.
The detection holder 34 is composed of a first fixing strip 341, a second fixing strip 342, and a third fixing strip 343. The first channel 35 between the first fixing strip 341 and the second fixing strip 342 is an exit channel of light emitted by the lamp bead 32; the second channel 36 between the second and third fixed bars 342, 343 is an incident channel of light received by the photodiode 33. The reflection of a small included angle is realized through the structure, and the detection stability is improved.
Referring to fig. 8, the result of the channel simulation of the tape detection module 3 is shown. This 3 detection methods of sticky tape detection module utilize little contained angle to detect the scotch tape, and the characteristic that mainly is the scotch tape smooth surface is littleer or big incident light angle can make it have near 100% reflection of light, so do not receive the size of intermodule passageway and lead to unstable influence behind the paper entering passageway, detection ability is comparatively stable.
Referring to fig. 6, the first channel 35 includes a first straight section 351 and a first inclined section 352 which are communicated with each other, and the second channel 36 includes a second straight section 361 and a second inclined section 362 which are communicated with each other, and the first inclined section 352 and the second inclined section 362 are mutually included and distributed crosswise. The first straight section 351 and the second straight section 361 are parallel to each other and vertically distributed. The inclination angles of the first inclined section 352 and the second inclined section 362 are both 5-10 degrees; in this embodiment, the inclination angles of the first and second inclined sections 352 and 362 are preferably 7.5 degrees, the included angle between the first and second inclined sections 352 and 362 is 15 degrees, the refraction angle lower than 45 degrees in the art is a small included angle, and vice versa is a large included angle. The first channel 35 is capable of shaping and refracting the emitted light onto the object to be measured, and the second channel 36 is capable of receiving and inputting the reflected light into the photodiode 33.
In this embodiment, the light of the lamp bead 32 is red light, blue light, green light, infrared light 850nm or infrared light 940 nm. Refraction is achieved by the upper beam type and the wave band.
Referring to fig. 3, the image scanning module 2 includes a printed circuit board 21, a photosensitive wafer 22, a light guiding rod light source assembly 23, and a cylindrical lens 24, wherein the printed circuit board 21 is located at the lowest end of the casing 1, the photosensitive wafer 22 is disposed on the printed circuit board 21, the cylindrical lens 24 is located above the photosensitive wafer 22, the cylindrical lens 24 and the photosensitive wafer 22 transmit light therebetween, and the light guiding rod light source assembly 23 is disposed in the casing 1 and located at one side of the cylindrical lens 24. The image scanning is carried out through the structure so as to realize the image currency examination function.
Referring to fig. 3, a light guide groove is formed between the printed circuit board 21 and the lenticular lens 24, the photosensitive chip 22 is located in the light guide groove, and the lenticular lens 24 transmits light through the light guide groove. The reflected light of the object to be measured is inputted into the photosensitive wafer 22 by the lenticular lens 24 and is subjected to an image forming process by the printed circuit board 21.
Referring to fig. 3, the light guide rod light source assembly 23 is disposed obliquely to the center line of the lenticular lens 24. Light refraction for image scanning is achieved.
In this embodiment, the light of the light guide rod light source assembly 23 includes red light, blue light, green light, infrared light 850nm and infrared light 940 nm. Refraction is achieved by the upper beam type and the wave band.
Referring to fig. 3, the housing 1 includes a housing 11 and a glass 12, a cavity for installing the image scanning module 2 and the tape detection module 3 is provided in the housing 11, and the glass 12 is provided at an opening of the housing 11 and encapsulates the image scanning module 2 and the tape detection module 3. The glass 12 is used for packaging, so that the module can be protected, and the light transmission function can be realized.
Reference to the embodiments and illustrations:
in the present test, two tapes are attached to the yellow paper and the white paper for respective tests, and with reference to fig. 10a and 10b, for actually detecting the test results of the tapes, it can be seen that when the tapes are attached to the yellow paper and the white paper, the output results of the diodes are as follows:
the adhesive tape detection module 3 is embedded into a currency detecting device, the adhesive tape detection function of the adhesive tape detection module does not influence the image scanning function of the original machine, and the quality of the original scanned image is not influenced. The optical voltage difference between the adhesive tape and the non-adhesive tape can be effectively detected, so that the object to be scanned with the adhesive tape can be detected by the signal.
The currency detecting device with the adhesive tape detecting function provided by the invention has the functions of scanning images and detecting adhesive tapes, and integrates pattern scanning detection and adhesive tape detection. The space is effectively saved, and the function of detecting the adhesive tape is added on the original image sensor. Moreover, the structure is simple, and the cost can be effectively reduced. This sticky tape detection module 3 just has little contained angle to detect, can increase the stability that the sticky tape detected.
The foregoing are only some embodiments of the invention. It will be apparent to those skilled in the art that various changes and modifications can be made without departing from the inventive concept thereof, and these changes and modifications can be made without departing from the spirit and scope of the invention.
Claims (9)
1. The currency detecting device with the adhesive tape detecting function is characterized by comprising a shell (1), an image scanning module (2) and an adhesive tape detecting module (3), wherein the image scanning module (2) and the adhesive tape detecting module (3) are arranged in the shell (1), and the image scanning module (2) and the adhesive tape detecting module (3) are adjacently distributed; the adhesive tape detection module (3) comprises a detection circuit board (31), lamp beads (32), a photodiode (33) and a detection support (34), wherein the lamp beads (32) and the photodiode (33) are arranged on the detection circuit board (31), and the detection support (34) is covered on the adhesive tape detection circuit board (31).
2. The banknote validator with the tape detection function according to claim 1, wherein the detection bracket (34) comprises a first fixing strip (341), a second fixing strip (342) and a third fixing strip (343) which are distributed in a straight line, a first channel (35) is formed between the first fixing strip (341) and the second fixing strip (342), and a second channel (36) is formed between the second fixing strip (342) and the third fixing strip (343); the lamp beads (32) are located in the first channel (35), and the photodiodes (33) are located in the second channel (36).
3. The banknote validator with the tape detection function according to claim 2, wherein the first channel (35) comprises a first straight section (351) and a first inclined section (352) which are communicated, the second channel (36) comprises a second straight section (361) and a second inclined section (362) which are communicated, and the first inclined section (352) and the second inclined section (362) are mutually included and distributed in a crossed manner.
4. The money detecting device with the tape detection function according to claim 3, wherein the light of the lamp bead (32) is red light, blue light, green light, infrared light 850nm or infrared light 940 nm.
5. The currency detecting device with the tape detection function according to any one of claims 1 to 4, wherein the image scanning module (2) comprises a printed circuit board (21), a photosensitive wafer (22), a light guide rod light source assembly (23) and a cylindrical lens (24), the printed circuit board (21) is located at the lowest end of the inside of the housing (1), the photosensitive wafer (22) is arranged on the printed circuit board (21), the cylindrical lens (24) is located above the photosensitive wafer (22), the cylindrical lens (24) and the photosensitive wafer (22) are in light transmission, and the light guide rod light source assembly (23) is arranged in the housing (1) and located on one side of the cylindrical lens (24).
6. The banknote identifier with the tape detection function according to claim 5, wherein a light guide slot is formed between the printed circuit board (21) and the cylindrical lens (24), the photosensitive wafer (22) is located in the light guide slot, and the cylindrical lens (24) is optically transmitted through the light guide slot.
7. The bill validator with tape detection function as claimed in claim 6, wherein the light guide bar light source assembly (23) is arranged to be inclined toward the center line of the cylindrical lens (24).
8. The money detecting device with tape detection function according to claim 7, wherein the light of the light guide bar light source assembly (23) comprises red light, blue light, green light, infrared light 850nm and infrared light 940 nm.
9. The currency detecting device with the tape detection function according to claim 8, wherein the housing (1) comprises a casing (11) and a glass (12), a cavity for installing the image scanning module (2) and the tape detection module (3) is arranged in the casing (11), and the glass (12) is arranged at an opening of the casing (11) and encapsulates the image scanning module (2) and the tape detection module (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010910053.2A CN112184984A (en) | 2020-09-02 | 2020-09-02 | Currency detector with adhesive tape detection function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010910053.2A CN112184984A (en) | 2020-09-02 | 2020-09-02 | Currency detector with adhesive tape detection function |
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| Publication Number | Publication Date |
|---|---|
| CN112184984A true CN112184984A (en) | 2021-01-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010910053.2A Pending CN112184984A (en) | 2020-09-02 | 2020-09-02 | Currency detector with adhesive tape detection function |
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Application publication date: 20210105 |
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