CN104713483A - Detection method and device for photosensitive fibers embedded in anti-counterfeit paper - Google Patents
Detection method and device for photosensitive fibers embedded in anti-counterfeit paper Download PDFInfo
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- CN104713483A CN104713483A CN201510144936.6A CN201510144936A CN104713483A CN 104713483 A CN104713483 A CN 104713483A CN 201510144936 A CN201510144936 A CN 201510144936A CN 104713483 A CN104713483 A CN 104713483A
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Abstract
The invention discloses a detection method and device for photosensitive fibers embedded in anti-counterfeit paper. An LED line light source irradiates the surface of an anti-counterfeit paper web, the photosensitive fibers embedded in the anti-counterfeit paper web are stimulated to give out visible light, a line scanning camera shoots a frame of image which exactly corresponds to the large image of the anti-counterfeit paper according to received line triggering signals and frame triggering signals, the large image is segmented into a plurality of small images corresponding to small pieces of anti-counterfeit paper through an image processing and storing unit, then the features of the photosensitive fibers are detected, and thus the online and real-time detection of the photosensitive fibers embedded in the anti-counterfeit paper is achieved. The detection efficiency is high, the labor intensity is greatly lowered, and the accuracy rate is high; furthermore, detecting and alarming can be effectively conducted for the photosensitive fibers with special distribution requirements, and defect products can be prevented from flowing to the market.
Description
Technical field
The present invention relates to detection method and the device of the embedded photosensitive fiber of a kind of cheque paper.
Background technology
In cheque paper production run, often through adding the fiber with certain light sensitive characteristic in paper, reach false proof object.
In cheque paper production run, have the difference of large and Xiao Zhang, a corresponding false proof bill of Xiao Zhang or banknote size, a large Zhang Ze is made up of the multiple Xiao Zhang of continuous print, is the minimum unit of follow-up printing.When paper web is produced on paper machine, corresponding each large Zhang Youyi crosscut cursor, as point point of contact of opening greatly continuously.
The detection method of existing cheque paper photosensitive fiber, general employing Xiao Zhang sampling, laboratory naked eyes counting mode, not only detection efficiency is low, sampling rate is little, labour intensity is comparatively large, accuracy is not high, and some is had to the anti-false fiber of special location Spreading requirements, if occur aborning, applicator is abnormal, thus the fiber caused disappearance, at this moment on-line measuring device must be adopted to realize and alarm mark, otherwise faulty goods can be caused to flow to market.
Summary of the invention
In order to overcome above-mentioned defect, the invention provides detection method and the device of the embedded photosensitive fiber of a kind of cheque paper, real-time detection is often opened greatly in cheque paper, the embedded photosensitive fiber index based on false proof object, overcome the deficiency of existing manual detection, realize the online automatic detection of the embedded photosensitive fiber in cheque paper production run.
The present invention in order to the technical scheme solving its technical matters and adopt is:
A detection method for the embedded photosensitive fiber of cheque paper, comprising:
The cheque paper production line of one embedded photosensitive fiber is provided, cheque paper paper web is driven to carry out transmission by paper locomotive, this cheque paper paper web is intervally distributed with several crosscut cursors, paper web between every two crosscut cursors forms one and opens cheque paper greatly, and this large cheque paper comprises some Xiao Zhang's cheque papers;
Be irradiated on above-mentioned cheque paper paper web by one LED line source, the photosensitive fiber embedded in this cheque paper paper web is inspired visible ray;
One scrambler is set, paper locomotive speed is sensed as the first pulse signal and accesses to signal distributor, this signal distributor again by this first pulse signal distribution to several just to cheque paper paper web arrange line scan camera, as the line triggering signal of this line scan camera;
One crosscut cursor sensor is set, detect the crosscut cursor on described cheque paper paper web, and produce the second pulse signal, this second pulse signal access signal lag device, this second output of pulse signal is accessed described signal distributor by this signal lag device again, this second pulse signal is copied output and is sent to several line scan cameras by this signal distributor again, as the frame trigger pip of this line scan camera;
Described line scan camera under the acting in conjunction of described line triggering signal and frame trigger pip, an a two field picture i.e. large image of a shooting corresponding cheque paper greatly, and by this greatly an image be sent to image procossing and storage unit;
The separation of images of opening greatly each Xiao Zhang's cheque paper corresponding in image is formed Xiao Zhang's image as processing unit by described image procossing and storage unit, calculates the photosensitive fiber characteristic embedded in this Xiao Zhang's image;
Described image procossing and storage unit preserve characteristic photosensitive fiber in each Xiao Zhang's image being detected in time, and set limit value, when testing result exceedes setting limit value, image procossing and storage unit send sound and light alarm signal by man-machine interface, and drive extraneous mark unit coding mark on corresponding cheque paper paper web.
As a further improvement on the present invention, described line scan camera and LED light source are installed on the same side of described cheque paper paper web, and obtain cheque paper image by reflective shooting.
As a further improvement on the present invention, the back side installation paper carrying roll of the sweep trace on this cheque paper paper web is acted at the corresponding described line scan camera of described cheque paper paper web.
As a further improvement on the present invention, described line scan camera and LED light source are installed on the both sides of described cheque paper paper web, and obtain cheque paper image by printing opacity shooting.
As a further improvement on the present invention, paper carrying roll is separately installed with in the upstream and downstream of the corresponding described line scan camera sweep trace of described cheque paper paper web.
As a further improvement on the present invention, the characteristic of described photosensitive fiber at least comprise the quantity of this photosensitive fiber, length, area, position, spacing and uniformity index one of them.
The present invention also provides the pick-up unit of the embedded photosensitive fiber of a kind of cheque paper, the characteristic of the photosensitive fiber in the cheque paper paper web on the cheque paper production line detecting embedded photosensitive fiber, this cheque paper production line drives cheque paper paper web to carry out transmission by paper locomotive, this cheque paper paper web is intervally distributed with several crosscut cursors, paper web between every two crosscut cursors forms one and opens cheque paper greatly, this large cheque paper comprises some Xiao Zhang's cheque papers, described pick-up unit comprises LED light source, at least one line scan camera, crosscut cursor sensor, signal lag device, signal distributor, scrambler, image procossing and storage unit, mark unit and man-machine interface, described LED line source and line scan camera are just arranged cheque paper paper web,
Paper locomotive speed is sensed as the first pulse signal and accesses to signal distributor by described scrambler, this signal distributor again by this first pulse signal distribution to line scan camera, as the line triggering signal of this line scan camera;
Described crosscut cursor sensor detects the crosscut cursor on described cheque paper paper web, and produce the second pulse signal, this second pulse signal access signal lag device, this second output of pulse signal is accessed described signal distributor by this signal lag device again, this second pulse signal is copied output and is sent to several line scan cameras by this signal distributor again, as the frame trigger pip of this line scan camera;
Described line scan camera, under the acting in conjunction of described line triggering signal and frame trigger pip, can take an a two field picture i.e. large image of corresponding one cheque paper greatly, and by this greatly an image be sent to image procossing and storage unit;
The separation of images of each Xiao Zhang's cheque paper corresponding in described large image can be formed Xiao Zhang's image as processing unit by described image procossing and storage unit, calculates the photosensitive fiber characteristic embedded in this Xiao Zhang's image;
Described image procossing and storage unit can preserve characteristic photosensitive fiber in each Xiao Zhang's image being detected in time, and set limit value, when testing result exceedes setting limit value, image procossing and storage unit send sound and light alarm signal by man-machine interface, and drive extraneous mark unit coding mark on corresponding cheque paper paper web.
As a further improvement on the present invention, described line scan camera and LED light source are installed on the same side of described cheque paper paper web, and obtain cheque paper image by reflective shooting; Paper carrying roll is installed at the back side acting on the sweep trace on this cheque paper paper web at the corresponding described line scan camera of described cheque paper paper web.
As a further improvement on the present invention, described line scan camera and LED light source are installed on the both sides of described cheque paper paper web, and obtain cheque paper image by printing opacity shooting; Paper carrying roll is separately installed with in the upstream and downstream of the corresponding described line scan camera sweep trace of described cheque paper paper web.
As a further improvement on the present invention, the characteristic of described photosensitive fiber at least comprise the quantity of this photosensitive fiber, length, area, position, spacing and uniformity index one of them.
The invention has the beneficial effects as follows: detection method and the device of the embedded photosensitive fiber of this cheque paper are irradiated to cheque paper paper surface by LED line source, the photosensitive fiber embedded in cheque paper paper web is inspired visible ray, line scan camera takes a large image of a two field picture just in time corresponding cheque paper according to the line triggering signal received and frame trigger pip, this opens greatly the Characteristics Detection of carrying out photosensitive fiber after image is divided into Xiao Zhang's image of some corresponding Xiao Zhang's cheque papers by image procossing and storage unit again, thus the on-line real-time measuremen achieved the embedded photosensitive fiber of cheque paper, not only detection efficiency is high, greatly reduce labour intensity, and accuracy rate is high, to the anti-false fiber of some special Spreading requirements, also can detect in time and report to the police, faulty goods can not be caused to flow to market.
Accompanying drawing explanation
Fig. 1 is that paper web of the present invention is opened greatly and Xiao Zhang's graph of a relation;
Fig. 2 is transmission Cleaning Principle figure of the present invention;
Fig. 3 is that reflection of the present invention detects scheme of installation.
By reference to the accompanying drawings, make the following instructions:
100---crosscut cursors 200---open cheque paper greatly
300---Xiao Zhang's cheque paper 400---paper locomotive
401---paper carrying roll 500---cheque paper paper web
1---LED line source 2---line scan camera
3---crosscut cursor sensor 4---signal lag device
5---signal distributor 6---scrambler
7---image procossing and storage unit 8---mark unit
9---man-machine interface
Embodiment
By reference to the accompanying drawings, elaborate to the present invention, but protection scope of the present invention is not limited to following embodiment, the simple equivalence namely in every case done with the present patent application the scope of the claims and description changes and modifies, and all still belongs within patent covering scope of the present invention.
As shown in Figure 1, the paper web between two crosscut cursors 100 forms large opening in 200, one large and comprises 12 Xiao Zhangs 300.
As shown in Figure 2, by LED line source 1, be irradiated to false proof paper surface, be embedded in photosensitive fiber in cheque paper under light source irradiation, can naked eyes visible; Paper machine speed is sensed as pulse signal by scrambler 6 and accesses signal distributor 5, is redistributed to each line scan camera 2, as the line triggering signal of line scan camera 2; After crosscut cursor sensor 3 detects the crosscut cursor on paper web, produce a pulse signal, access signal lag device 4, export from signal lag device 4 again and access signal distributor 5, by divider 5, this crosscut cursor signal is carried out copying output again, be sent to each line scan camera 2 respectively, as the frame trigger pip of line scan camera 2, under line triggering signal and the acting in conjunction of frame trigger pip, the two field picture that line scan camera 2 photographs, just in time open image greatly for one of corresponding cheque paper, this is opened greatly image and is sent to image procossing and storage unit 7; Image procossing and storage unit 7 are opened greatly with the size relationship of Xiao Zhang for benchmark with paper web shown in Fig. 1, and from one greatly an image, isolate each Xiao Zhang's image, follow-up image procossing is all processing unit with Xiao Zhang; Image procossing and storage unit 7 pairs of Xiao Zhang's images, by the image algorithm of multi-step, calculate the quantity of the photosensitive fiber embedded in Xiao Zhang's image, area, the fiber two-dimensional coordinate position in Xiao Zhang's image;
Image procossing and storage unit 7 can preserve quantity, length, area, spacing, uniformity index that fiber in each Xiao Zhang's image detected in time, when testing result exceedes setting limit value, image procossing and storage unit 7 can by man-machine interfaces 9, send sound and light alarm signal, and drive external mark unit 8 coding mark on corresponding paper web.
When needs under reflected light detection fibers time, as fluorescent fiber, then press shown in Fig. 3, LED line source 1 and line scan camera 2 are arranged on the same side, obtained the image of embedded color fluorescence fiber by line scan camera, be sent to image procossing and storage unit 7, complete detection.
If reflection detects, line scan camera 2 acts on the surface sweeping line on paper web, should install paper carrying roll at the back side of surface sweeping line paper web, ensures the smooth stable of paper web, avoids shake to cause paper web to take image fault; If transmission detects, then line scan camera 2 acts on the surface sweeping line upstream and downstream on paper web, should install paper carrying roll 401, ensures that the paper web at surface sweeping line place is smooth as far as possible and does not shake.If need sense colors fiber, then select multi-color cord scanning camera, otherwise select monochrome cameras.The apolegamy of camera lens and the quantity of detection camera, depend on the accuracy of detection to detected fiber.
The present invention is used for the cheque paper of any embedded photosensitive fiber, and the real-time online in production run detects.
Claims (10)
1. a detection method for the embedded photosensitive fiber of cheque paper, is characterized in that:
The cheque paper production line of one embedded photosensitive fiber is provided, cheque paper paper web (500) is driven to carry out transmission by paper locomotive (400), this cheque paper paper web is intervally distributed with several crosscut cursors (100), paper web between every two crosscut cursors forms one and opens cheque paper (200) greatly, and this large cheque paper comprises some Xiao Zhang's cheque papers (300);
Be irradiated on above-mentioned cheque paper paper web by one LED line source (1), the photosensitive fiber embedded in this cheque paper paper web is inspired visible ray;
One scrambler (6) is set, paper locomotive speed is sensed as the first pulse signal and accesses to signal distributor (5), this signal distributor again by this first pulse signal distribution to several just to cheque paper paper web arrange line scan camera (2), as the line triggering signal of this line scan camera;
One crosscut cursor sensor (3) is set, detect the crosscut cursor on described cheque paper paper web, and produce the second pulse signal, this second pulse signal access signal lag device (4), this second output of pulse signal is accessed described signal distributor by this signal lag device again, this second pulse signal is copied output and is sent to several line scan cameras by this signal distributor again, as the frame trigger pip of this line scan camera;
Described line scan camera under the acting in conjunction of described line triggering signal and frame trigger pip, an a two field picture i.e. large image of a shooting corresponding cheque paper greatly, and by this greatly an image be sent to image procossing and storage unit (7);
The separation of images of opening greatly each Xiao Zhang's cheque paper corresponding in image is formed Xiao Zhang's image as processing unit by described image procossing and storage unit, calculates the photosensitive fiber characteristic embedded in this Xiao Zhang's image;
Described image procossing and storage unit preserve characteristic photosensitive fiber in each Xiao Zhang's image being detected in time, and set limit value, when testing result exceedes setting limit value, image procossing and storage unit send sound and light alarm signal by man-machine interface (9), and drive extraneous mark unit (8) coding mark on corresponding cheque paper paper web.
2. the detection method of the embedded photosensitive fiber of cheque paper according to claim 1, is characterized in that: described line scan camera and LED light source are installed on the same side of described cheque paper paper web, and obtains cheque paper image by reflective shooting.
3. the detection method of the embedded photosensitive fiber of cheque paper according to claim 2, is characterized in that: paper carrying roll (401) is installed at the back side acting on the sweep trace on this cheque paper paper web at the corresponding described line scan camera of described cheque paper paper web.
4. the detection method of the embedded photosensitive fiber of cheque paper according to claim 1, is characterized in that: described line scan camera and LED light source are installed on the both sides of described cheque paper paper web, and obtains cheque paper image by printing opacity shooting.
5. the detection method of the embedded photosensitive fiber of cheque paper according to claim 4, is characterized in that: be separately installed with paper carrying roll (401) in the upstream and downstream of the corresponding described line scan camera sweep trace of described cheque paper paper web.
6. the detection method of the embedded photosensitive fiber of cheque paper according to claim 1, is characterized in that: the characteristic of described photosensitive fiber at least comprise the quantity of this photosensitive fiber, length, area, position, spacing and uniformity index one of them.
7. the pick-up unit of the embedded photosensitive fiber of cheque paper, the characteristic of the photosensitive fiber in the cheque paper paper web on the cheque paper production line detecting embedded photosensitive fiber, this cheque paper production line drives cheque paper paper web (500) to carry out transmission by paper locomotive (400), this cheque paper paper web is intervally distributed with several crosscut cursors (100), paper web between every two crosscut cursors forms one and opens cheque paper (200) greatly, this large cheque paper comprises some Xiao Zhang's cheque papers (300), it is characterized in that: described pick-up unit comprises LED light source (1), at least one line scan camera (2), crosscut cursor sensor (3), signal lag device (4), signal distributor (5), scrambler (6), image procossing and storage unit (7), mark unit (8) and man-machine interface (9), described LED line source (1) and line scan camera are just arranged cheque paper paper web,
Described scrambler (6), paper locomotive speed is sensed as the first pulse signal and accesses to signal distributor (5), this signal distributor again by this first pulse signal distribution to line scan camera (2), as the line triggering signal of this line scan camera;
Described crosscut cursor sensor (3), detect the crosscut cursor on described cheque paper paper web, and produce the second pulse signal, this second pulse signal access signal lag device (4), this second output of pulse signal is accessed described signal distributor by this signal lag device again, this second pulse signal is copied output and is sent to several line scan cameras by this signal distributor again, as the frame trigger pip of this line scan camera;
Described line scan camera, under the acting in conjunction of described line triggering signal and frame trigger pip, can take an a two field picture i.e. large image of corresponding one cheque paper greatly, and by this greatly an image be sent to image procossing and storage unit (7);
The separation of images of each Xiao Zhang's cheque paper corresponding in described large image can be formed Xiao Zhang's image as processing unit by described image procossing and storage unit, calculates the photosensitive fiber characteristic embedded in this Xiao Zhang's image;
Described image procossing and storage unit can preserve characteristic photosensitive fiber in each Xiao Zhang's image being detected in time, and set limit value, when testing result exceedes setting limit value, image procossing and storage unit send sound and light alarm signal by man-machine interface (9), and drive extraneous mark unit (8) coding mark on corresponding cheque paper paper web.
8. the pick-up unit of the embedded photosensitive fiber of cheque paper according to claim 7, is characterized in that: described line scan camera and LED light source are installed on the same side of described cheque paper paper web, and obtains cheque paper image by reflective shooting; Paper carrying roll (401) is installed at the back side acting on the sweep trace on this cheque paper paper web at the corresponding described line scan camera of described cheque paper paper web.
9. the pick-up unit of the embedded photosensitive fiber of cheque paper according to claim 7, is characterized in that: described line scan camera and LED light source are installed on the both sides of described cheque paper paper web, and obtains cheque paper image by printing opacity shooting; Paper carrying roll (401) is separately installed with in the upstream and downstream of the corresponding described line scan camera sweep trace of described cheque paper paper web.
10. the pick-up unit of the embedded photosensitive fiber of cheque paper according to claim 7, is characterized in that: the characteristic of described photosensitive fiber at least comprise the quantity of this photosensitive fiber, length, area, position, spacing and uniformity index one of them.
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| CN201510144936.6A CN104713483B (en) | 2015-03-30 | 2015-03-30 | Cheque paper embeds the detection method and device of photosensitive fiber |
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| CN201510144936.6A CN104713483B (en) | 2015-03-30 | 2015-03-30 | Cheque paper embeds the detection method and device of photosensitive fiber |
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| CN104713483B (en) | 2017-09-12 |
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Inventor after: Du Zhengjie Inventor after: Di Hongwei Inventor after: Wang Weifeng Inventor after: Liu Gang Inventor after: Wang Duyi Inventor before: Lin Zhengjie Inventor before: Di Hongwei Inventor before: Wang Weifeng Inventor before: Liu Gang Inventor before: Wang Duyi |
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Address after: No. 1188 Zhenchuan East Road, Kunshan City, Suzhou City, Jiangsu Province 215300 Patentee after: KUNSHAN BANKNOTE PAPER Co.,Ltd. Patentee after: China Banknote Printing and Minting Group Co.,Ltd. Address before: No. 1188 Zhenchuan East Road, Kunshan City, Suzhou City, Jiangsu Province 215300 Patentee before: KUNSHAN BANKNOTE PAPER Co.,Ltd. Patentee before: CHINA BANKNOTE PRINTING AND MINTING Corp. |