CN101393138A - Surface quality on-line detection system for coin finished goods - Google Patents
Surface quality on-line detection system for coin finished goods Download PDFInfo
- Publication number
- CN101393138A CN101393138A CNA2008102015928A CN200810201592A CN101393138A CN 101393138 A CN101393138 A CN 101393138A CN A2008102015928 A CNA2008102015928 A CN A2008102015928A CN 200810201592 A CN200810201592 A CN 200810201592A CN 101393138 A CN101393138 A CN 101393138A
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- coin
- detection system
- field detector
- surface quality
- transport tape
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- 238000001514 detection method Methods 0.000 title claims abstract description 24
- 239000002699 waste material Substances 0.000 claims abstract description 16
- 230000007547 defect Effects 0.000 claims abstract description 15
- 230000007246 mechanism Effects 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims description 14
- 238000012545 processing Methods 0.000 claims description 11
- 230000007306 turnover Effects 0.000 abstract 2
- 239000002131 composite material Substances 0.000 abstract 1
- 238000004049 embossing Methods 0.000 abstract 1
- 239000000047 product Substances 0.000 description 38
- 230000008569 process Effects 0.000 description 6
- 238000012360 testing method Methods 0.000 description 5
- 230000003111 delayed effect Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000004804 winding Methods 0.000 description 4
- 206010061619 Deformity Diseases 0.000 description 3
- 230000004075 alteration Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
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Abstract
The invention discloses an online detection system for the surface quality of a coin finished product, which comprises a group of 'O'-shaped conveyer belt which is formed by two driving wheels, and a group of 'C'-shaped conveyer belt which is formed by driving wheels, wherein the 'C'-shaped conveyer belt is winded on one end of the 'O'-shaped conveyer belt to form a turnover mechanism. The online detection system for the surface quality of the coin finished product is characterized in that one end of the 'O'-shaped conveyer belt is provided with a centrifugal turntable; bright field detectors and dark field detectors are arranged on linear conveying sections of two conveyer belts respectively; a slideway is arranged between the centrifugal turntable and the 'O'-shaped conveyer belt for connection; lower parts of the two conveyer belts are provided with defect ware collecting boxes; and one side of the turnover mechanism is provided with a programmable controller. The online detection system for the surface quality of the coin finished product adopts bright and dark composite fields to automatically detect the quality of the coin finished product, is easy to catch the characteristics and the defects of the coin, effectively reduces the rejection rate, has the continuous waste automatic alarm and stop function which is linked with an embossing press, performs real-time automatic detection and control on the quality of online products, and greatly improves the detection accuracy and the labor productivity.
Description
Technical field
The present invention relates to coin manufacturing technology field, especially a kind of surface quality on-line detection system for coin finished goods.
Background technology
At present, only the base cake quality to coin detects automatically in the coinage industry, the quality of finished product coin mainly still relies on manual detection to finish, now also have and adopt the bright field coaxial light source that the finished surface quality of coin is detected automatically, but this single bright field pick-up unit, the real-time control of waste product continuously in can't realizing producing, it can't accurately be caught some characteristics defect of coin, there is certain limitation, leaks useless and by mistake useless rate than higher.
Summary of the invention
A kind of coin surface quality on-line measuring device that is used for of providing at the deficiencies in the prior art is provided; bright, the dark complex visual field that it adopts axis light and annular light source to combine; surface quality to the finished product coin detects automatically; the characteristics defect of coin is easy to catch; effectively reduce the useless rate of mistake; be provided with the interlock of automatic warning shutdown procedure and Embosser; in case shut down after Embosser just can be reported to the police automatically behind the continuous generation defect ware in the moulding process; realize the real-time control of product quality, improved greatly the examination and test of products qualification rate.
The technical scheme that realizes the object of the invention is: a kind of surface quality on-line detection system for coin finished goods, comprise one group of O shape transport tape that constitutes by two power wheels, the C shape transport tape that another group is made of power wheel, the end that C shape transport tape surrounds O shape transport tape constitutes switching mechanism, two transport tapes are provided with the bright field detector, characteristics are that an end of O shape transport tape is provided with centrifugal turntable, be respectively equipped with the bright field detector successively on the straight line transportation section of two transport tapes, the dark field detector, being provided with slideway between centrifugal turntable and the O shape transport tape is connected, the bottom of two transport tapes is provided with the defect ware collecting box, and a side of switching mechanism is provided with Programmable Logic Controller.
Described dark field detector, bright field detector are made up of industrial camera, sensor, pneumatic valve and image processing server, are controlled in real time by Programmable Logic Controller.
Described Programmable Logic Controller is provided with and the continuous waste product of the marking press interlock shutdown procedure of reporting to the police automatically.
Described bright field detector is that coaxial light source detects, and the dark field detector is that annular light source detects.
The present invention is reasonable in design; it adopts bright, dark complex visual field that the end product quality of coin is detected automatically; the characteristics defect of coin is easy to catch; effectively reduce the useless rate of mistake; and be provided with and the continuous waste product of the marking press interlock shutdown function of reporting to the police automatically; in case occur just energy auto stop of defect ware Embosser in the production run continuously; quality at line products is controlled in real time; thereby thoroughly solved the labour intensity height that desk checking brings, quality inspection instability, the useless high problem of rate of mistake, improved the accuracy rate and the labor productivity of check greatly.
Description of drawings
Fig. 1 is a structural representation of the present invention
Fig. 2 is Fig. 1 vertical view
Fig. 3 is a work synoptic diagram of the present invention
The aberration waste product figure that Fig. 4 detects for the present invention
The certified products figure that Fig. 5 detects for the present invention
The big unfilled corner figure that Fig. 6 detects for the present invention
The little unfilled corner figure that Fig. 7 detects for the present invention
The certified products figure that Fig. 8 detects for coaxial light source of the present invention
The waste product figure that Fig. 9 detects for annular light source of the present invention
Embodiment
Embodiment 1
Consult accompanying drawing 1～2, the present invention is by being arranged on big on the frame 19, brief biography driving wheel 1,9 constitute the transport tape 3 of " O " shape winding, by power wheel 2,12,17,18,20 constitute the transport tape 11 of C shape winding, the recess Bao Rao of C shape winding transport tape 11 constitutes switching mechanism 10 at an end of " O " shape winding transport tape 3, transport tape 3 one ends are provided with centrifugal turntable 8, transport tape 3, be provided with bright field detector 5 on 11 the straight line transportation section respectively successively, dark field detector 4, being provided with slideway 13 between centrifugal turntable 8 and the transport tape 3 is connected, transport tape 3,11 bottom is provided with defect ware collecting box 16, and Programmable Logic Controller 14 is arranged on a side of switching mechanism 10.Dark field detector 4, bright field detector 5 are made up of industrial camera 15, sensor 6, pneumatic valve 7 and image processing server; bright field detector 5 detects for coaxial light source; dark field detector 4 detects for annular light source; two detectors 4,5 are controlled in real time by 14 pairs of quality at line products of Programmable Logic Controller, are provided with in the Programmable Logic Controller 14 and the continuous waste product of the marking press interlock shutdown procedure of reporting to the police automatically.
Above-mentioned bright field detector 5 adopts the direct irradiation of light, is mainly used in coin overall profile, the literal on surface and the image acquisition at figure line edge.And on this basis, utilizing the ring light light source irradiation of dark field detector 4, it can make level and smooth surperficial deepening, and the surface of surface irregularity, height change brightens.Thereby make all kinds of planes pit defect feature common in the production run be easy to catch, brought facility for the Flame Image Process in later stage.It is that carrier is handled computing based on image processing server that coin image detects software, and its testing process comprises the statistics and the computing of the obtaining of image, processing and image microscopic characteristics.Industrial camera 15 will be taken after the analog signal conversion that obtains is digital signal, and image information (being numerical information) is transferred in the image processing server, then begin the pre-service of carries out image, then, the microscopic characteristics algorithm computing of software to beginning to set through pretreated coin image.
The pre-service of image comprises the steps:
1, background separation---according to the gray difference of coin and transmission belt background, isolate destination object, i.e. coin image.
2, coin is cut edge---and the coin image zone position information according to the background separation gained carries out automatic trimming.
3, positive and negative judgement---by dividing some annular regions,, it is made positive and negative judgement according to the difference of tow sides reflection on gradation of image distributes.
4, determine the center of circle---by the Hough conversion, the rough position in the coin image center of circle, location is then accurately located in conjunction with the side cut position.
5, rotation automatically---according to the intensity profile curve of product to be checked and the difference of standardized product, calculate the angle that product to be checked and standardized product differ.Rotate the angle of each piece coin around the center of circle, to make things convenient for accurate match to standardized product.
The computing of microscopic characteristics algorithm comprises the steps:
1, whole aberration
Calculate and compare the average gray of coin image, when minimum gray value≤average gray≤gray scale maximal value, its result is certified products such as accompanying drawing 5, otherwise is waste product such as accompanying drawing 4.
2, edge fault
(1) limit is inclined to one side
Distance of center circle
(2) limit damage, unfilled corner (greatly)
When area grayscale [i] (0≤i≤28)＜standard value, its result is certified products, otherwise is waste product such as accompanying drawing 6.
(3) unfilled corner (little)
When maximum gauge-minimum diameter＜standard value, its result is certified products, otherwise is waste product such as accompanying drawing 7.
3, pattern defect
(1) at the template matches (area) of literal
A. piecemeal thresholding
To in the front side, state, people, the people, silver, row, YI, YUAN, unit, 2,0,0, X, ZHO, ONG, GUO, REN, MIN, YINH, ANG carry out zone location and select the local threshold processing.
B. area matched
Obtain the average area at each position according to the template statistics, determine the bound of the areal extent of certified products according to sensitivity.The connected region area (Blob) at each position of count coins, and compare.
When Minimum Area area＜connected region area＜maximum region area, its result is certified products, otherwise is waste product.
(2) at the template matches (gray scale) of pattern
Utilization gray scale coupling compares the average gray numerical value and the template statistic of test section.When minimum gray value≤average gray≤gray scale maximal value, its result is certified products, otherwise is waste product.
4, planar disfigurement
Defect part on the coin except limit portion and figure line part all classifies as planar disfigurement.
(1) difference shadow method
Use difference shadow method that the figure line is partly removed, be left planar section, obtain the detected object of planar disfigurement.
(2) threshold setting
Adjust the setting of threshold value according to the intensity profile situation self-adaptation of coin, thereby the information that the needs in the filtering image are ignored keeps connected region to be analyzed, reduced the mistake rate of giving up.
(3) connected region area (Blob)
Calculate the connected region area, when connected region area＜maximum region area, its result is certified products such as accompanying drawing 8, otherwise is waste product such as accompanying drawing 9.
In above-mentioned testing process; system controls the real-time control of finishing product quality according to the detection statistics data of software by PLC independently; and ensure that by the quality control standard of setting the automatic warning of continuous waste product shuts down, realize the real-time control of impression quality in the production run.Detect software and in testing process, define an array variable, cumulative statistics quantity scrapped in cycle period.The number of rejects of adding up in finding this array surpasses the standard value of setting, and then software outputs signal to the PLC controller, and PLC exports a stopping signal and gives Embosser subsequently, makes it stop impression.
The present invention not only can be done in real time the online automatic detection of coin surface quality, and can realize the quality of product is controlled in real time by PLC control.The present invention can also have other embodiment in addition to the implementation, and all employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop on the protection domain of requirement of the present invention.
Claims (4)
1, a kind of surface quality on-line detection system for coin finished goods, comprise one group of " O " shape transport tape that constitutes by two power wheels, " C " shape transport tape that another group is made of power wheel, the end that " C " shape transport tape surrounds " O " shape transport tape constitutes switching mechanism, two transport tapes are provided with the bright field detector, an end that it is characterized in that " O " shape transport tape is provided with centrifugal turntable, be respectively equipped with the bright field detector successively on the straight line transportation section of two transport tapes, the dark field detector, being provided with slideway between centrifugal turntable and " O " shape transport tape is connected, the bottom of two transport tapes is provided with the defect ware collecting box, and a side of switching mechanism is provided with Programmable Logic Controller.
2, according to the described surface quality on-line detection system for coin finished goods of claim 1, it is characterized in that described dark field detector, bright field detector be made up of industrial camera, sensor, pneumatic valve and image processing server, control in real time by Programmable Logic Controller.
3,, it is characterized in that described Programmable Logic Controller is provided with and the continuous waste product of the marking press interlock shutdown procedure of reporting to the police automatically according to claim 1 or 2 described surface quality on-line detection system for coin finished goods.
4, according to claim 1 or 2 described surface quality on-line detection system for coin finished goods, it is characterized in that described bright field detector is that coaxial light source detects, the dark field detector is that annular light source detects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102015928A CN101393138B (en) | 2008-10-22 | 2008-10-22 | Surface quality on-line detection system for coin finished goods |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102015928A CN101393138B (en) | 2008-10-22 | 2008-10-22 | Surface quality on-line detection system for coin finished goods |
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| Publication Number | Publication Date |
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| CN101393138A true CN101393138A (en) | 2009-03-25 |
| CN101393138B CN101393138B (en) | 2011-07-20 |
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| CN2008102015928A Active CN101393138B (en) | 2008-10-22 | 2008-10-22 | Surface quality on-line detection system for coin finished goods |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101865861A (en) * | 2010-05-28 | 2010-10-20 | 益伸电子(东莞)有限公司 | Hardware outward appearance automatic check out system |
| CN102374997A (en) * | 2010-08-25 | 2012-03-14 | 中国印钞造币总公司 | High-precision detection device of coin surface quality based on vision system |
| CN102809566A (en) * | 2012-08-29 | 2012-12-05 | 上海造币有限公司 | System for automatically detecting surface quality of colorful gold/silver coin (medal) |
| CN102809941A (en) * | 2011-06-03 | 2012-12-05 | 上海造币有限公司 | Online automatic geometric dimension detecting and rejecting device for circulating coin blanks |
| CN103207185A (en) * | 2012-01-11 | 2013-07-17 | 宝山钢铁股份有限公司 | Steel coil end portion quality detection system and method thereof |
| CN103617670A (en) * | 2013-12-11 | 2014-03-05 | 南京中钞长城金融设备有限公司 | Spiral oscillatory type worn coin picking device |
| CN104249925A (en) * | 2013-06-25 | 2014-12-31 | 上海造币有限公司 | High-speed stamping, separating and overturning arranging conveyer for double-layered composite coins (badges) |
| CN105866135A (en) * | 2016-03-22 | 2016-08-17 | 中和汇阔科技（北京）有限公司 | Detection system for flaky material |
| CN110296997A (en) * | 2019-07-03 | 2019-10-01 | 三峡大学 | The defect inspection method and device of ceramic tile based on machine vision |
| CN113984789A (en) * | 2021-11-16 | 2022-01-28 | 南京中钞长城金融设备有限公司 | A surface quality inspection system for coin products |
| CN119290574A (en) * | 2024-10-10 | 2025-01-10 | 延锋(南通)座椅有限公司 | Seat cushion cover indentation detection device and detection method |
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| JP4111378B2 (en) * | 2002-06-27 | 2008-07-02 | 日本ユニカ株式会社 | Identification object support device |
| CN2859539Y (en) * | 2005-12-14 | 2007-01-17 | 中国印钞造币总公司 | Surface quality on-line checkout device for coin completed product |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101865861A (en) * | 2010-05-28 | 2010-10-20 | 益伸电子(东莞)有限公司 | Hardware outward appearance automatic check out system |
| CN102374997A (en) * | 2010-08-25 | 2012-03-14 | 中国印钞造币总公司 | High-precision detection device of coin surface quality based on vision system |
| CN102809941B (en) * | 2011-06-03 | 2015-03-11 | 上海造币有限公司 | Online automatic geometric dimension detecting and rejecting device for circulating coin blanks |
| CN102809941A (en) * | 2011-06-03 | 2012-12-05 | 上海造币有限公司 | Online automatic geometric dimension detecting and rejecting device for circulating coin blanks |
| CN103207185A (en) * | 2012-01-11 | 2013-07-17 | 宝山钢铁股份有限公司 | Steel coil end portion quality detection system and method thereof |
| CN102809566B (en) * | 2012-08-29 | 2014-12-31 | 上海造币有限公司 | System for automatically detecting surface quality of colorful gold/silver coin (medal) |
| CN102809566A (en) * | 2012-08-29 | 2012-12-05 | 上海造币有限公司 | System for automatically detecting surface quality of colorful gold/silver coin (medal) |
| CN104249925A (en) * | 2013-06-25 | 2014-12-31 | 上海造币有限公司 | High-speed stamping, separating and overturning arranging conveyer for double-layered composite coins (badges) |
| CN103617670A (en) * | 2013-12-11 | 2014-03-05 | 南京中钞长城金融设备有限公司 | Spiral oscillatory type worn coin picking device |
| CN103617670B (en) * | 2013-12-11 | 2015-09-30 | 南京中钞长城金融设备有限公司 | Residual device chosen by spiral oscillatory type coin |
| CN105866135A (en) * | 2016-03-22 | 2016-08-17 | 中和汇阔科技（北京）有限公司 | Detection system for flaky material |
| CN110296997A (en) * | 2019-07-03 | 2019-10-01 | 三峡大学 | The defect inspection method and device of ceramic tile based on machine vision |
| CN113984789A (en) * | 2021-11-16 | 2022-01-28 | 南京中钞长城金融设备有限公司 | A surface quality inspection system for coin products |
| CN119290574A (en) * | 2024-10-10 | 2025-01-10 | 延锋(南通)座椅有限公司 | Seat cushion cover indentation detection device and detection method |
| CN119290574B (en) * | 2024-10-10 | 2025-03-25 | 延锋(南通)座椅有限公司 | Seat cushion cover indentation detection device and detection method |
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| Publication number | Publication date |
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| CN101393138B (en) | 2011-07-20 |
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Address after: 100044 Beijing city Xicheng District Xizhimen Street No. 143 Kaixuan main building Patentee after: China Banknote Printing and Minting Group Co.,Ltd. Patentee after: SHANGHAI MINT Co.,Ltd. Address before: 100044 Beijing city Xicheng District Xizhimen Street No. 143 Kaixuan main building Patentee before: CHINA BANKNOTE PRINTING AND MINTING Corp. Patentee before: SHANGHAI MINT Co.,Ltd. |
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