CN101592621A - A kind of automatic optical inspection device that uses refraction grid light sources check vial surface imperfection and inherent vice - Google Patents
A kind of automatic optical inspection device that uses refraction grid light sources check vial surface imperfection and inherent vice Download PDFInfo
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- CN101592621A CN101592621A CNA2009100154174A CN200910015417A CN101592621A CN 101592621 A CN101592621 A CN 101592621A CN A2009100154174 A CNA2009100154174 A CN A2009100154174A CN 200910015417 A CN200910015417 A CN 200910015417A CN 101592621 A CN101592621 A CN 101592621A
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Abstract
A kind of automatic optical inspection device of refraction grid light sources check vial surface imperfection and inherent vice that uses is made up of following four parts: dull and stereotyped high frequency backlight (1), grid striped (2), camera (4) and vision processor (5) are formed.Adopt the polyphaser scheme,, must select the efficient light sources that to discern defective as much as possible for use in order farthest to reduce cost.We place a kind of general light source and test by the refraction grid striped after being examined vial.We find vial before the black and white background of this grid striped, and it is more apparent that defective becomes.By suitable image processing algorithm,, fast detecting is arrived defective such as High frequency filter or geometric mode identification software etc.This equipment is widely used in checking dissimilar vials, such as neck bottle, no neck bottle, flask, short-necked flask, thick neck bottle and glass vial etc.
Description
(1) technical field
The present invention relates to be used for industrial automation and the industrial flow-line that a kind of vial is produced, use the automatic optical inspection device of refraction grid light sources check vial surface imperfection and inherent vice.
(2) technical background
Machine vision replaces human eye to do measurement and judgement with machine exactly.The machine vision light source is meant that will be ingested Target Transformation by machine vision product becomes picture signal, sends special-purpose Flame Image Process light source to, according to information such as pixel distribution and brightness, colors, is transformed into digital signal.Then, picture system carries out the feature that various computings come extracting objects to these signals, and then controls on-the-spot equipment action according to testing result.
The characteristics of Vision Builder for Automated Inspection are to improve the flexibility and the automaticity of producing.Be not suitable for the dangerous work environment of manual work or the occasion that the artificial vision is difficult to meet the demands at some, the machine in normal service vision substitutes the artificial vision; Simultaneously because in industrial processes in enormous quantities, low and precision is not high with artificial visual inspection product quality efficient, the automaticity that can enhance productivity greatly and produce with machine vision detection method.Can obtain bulk information fast just because of Vision Builder for Automated Inspection, and be easy to automatic processing, also be easy to design information and machining control information integration, therefore, in the modern automation production run, people are widely used for Vision Builder for Automated Inspection in fields such as operating condition monitoring, product inspection and quality control.
In Machine Vision Detection system applies process, find the suitable sources that obviously to distinguish defective by no means easy.A kind of scheme is to use background light, from the polishing of the vial back side, takes pictures by the camera of vial front.Yet this method only can detect opaque defectives such as calculus, burning into sand, and defectives such as the cut on body surface, washboard line but can can't detect because of printing opacity.Another kind of scheme is that from a side polishing, camera was taken pictures at opposite side before vial was placed on black background, like this on the body reflective spot of defective can with form tangible contrast on every side, cause erroneous judgement.Yet, therefore only use the impossible complete detection whole bottle body of a camera because defective may appear at any position of body.Surface imperfection on the vial or inherent vice are in case occur and will produce serious adverse consequences to product quality.
(3) summary of the invention
The objective of the invention is to propose a kind of special light source that comprehensively, accurately detects vial surface imperfection and inherent vice.Not only can detect defectives such as the calculus that produces in the processing fusion process of vial, burning into sand, bubble, crackle; Also can detect surface imperfection such as the washboard line that causes in cooling or the system bottle link, pit, crystallization, cut, and wryneck, baffle mark partially, fault of construction such as bottleneck burr.Under the light-source system of special use, by mode identificating software and image processing algorithm post-processed, these defectives can both be detected well, need not to use other light sources, not only make things convenient for use but also save cost.
A kind of automatic optical inspection device of refraction grid light sources check vial surface imperfection and inherent vice that uses of the present invention comprises: dull and stereotyped high frequency backlight (1), grid striped (2), camera (4) and vision processor (5).The light that dull and stereotyped high frequency backlight is sent by the grid stripe segmentation after, be mapped on the vial; The installation site conllinear of camera (4), and increase progressively successively apart from horizontal vertical distance be same zebra pattern striped with what guarantee that each camera photographed, but color is opposite; That is to say that each position of vial all will be checked simultaneously by at least two cameras, realized 360 ° of comprehensive check vial defectives.The one-hundred-percent inspection process relies on the SPEED VISION processor (5) that Pentium processor is housed, and guarantees testing result accurately and reliably.The grid striped is reserved certain space at vial relief literal place on one's body and is passed through by bias light, expose the relief literal, illuminate the literal edge, if this zone has defectives such as crackle can produce cut edge clearly on camera image, obviously be different from the edge of relief literal, avoid taking place flase drop to the full extent.The width of grid striped (2) can also be adjusted according to concrete size and dimension, at different vials different grid widths of fringe is arranged.
A kind of automatic optical inspection device that uses refraction grid light sources check vial surface imperfection and inherent vice of the present invention, with existing checkout equipment ratio, have following advantage: 1, dull and stereotyped high frequency backlight matches with the grid striped, increase the contrast of being examined between vial and the bias light, help the accuracy of Flame Image Process; 2, the installation site conllinear of camera, and increase progressively successively apart from horizontal vertical distance is the image that the light beam of diverse location sees through vial with what guarantee that each camera photographed, guarantees testing result accurately and reliably; 3, the width of grid striped can be adjusted according to concrete size and dimension, at different vials different grid widths of fringe is arranged, the convenient use; 4, the grid striped is reserved certain space at vial relief literal place on one's body and is passed through by bias light, expose the relief literal, illuminate the literal edge, if this zone has defectives such as crackle can produce cut edge clearly on camera image, obviously be different from the edge of relief literal, avoid taking place flase drop to the full extent; 5, only finish multinomial detection task, improved the automaticity of production efficiency and production greatly with a cover light source one-time detection; 6, this equipment is widely used, and is applicable to the vial that check is dissimilar, such as neck bottle, no neck bottle, flask, short-necked flask, thick neck bottle and glass vial etc.; 7, processing technology is simple, and cost accounting is low, is easy to promote the use of.
(4) description of drawings
Fig. 1 uses the side view of the automatic optical inspection device of refraction grid light sources check vial surface imperfection and inherent vice for the present invention is a kind of;
Among the figure: 1, dull and stereotyped high frequency backlight; 2, grid striped; 3, vial; 4, camera; 5, vision processor;
Fig. 2 is the synoptic diagram of grid striped processing relief literal of the present invention, and dash area is a transmission region;
Fig. 3 is a vertical view of the present invention;
Fig. 4 is the synoptic diagram of zebra grid;
The shadow region is a transmission region among the figure, and white rectangle is rectangular to be light tight district.
(5) in conjunction with the accompanying drawings, narrate specific embodiments of the present invention
Referring to Fig. 3 and Fig. 1, during the light supply apparatus of service test vial surface imperfection and inherent vice, the vertical view of whole device.In order to see full whole bottle body, need on three different directions, take pictures respectively.Three cameras can be installed on the same detection station, for fear of the interference of light on vial surface, also three cameras can be installed in the different detection cases.When vial in-position 1 (P1), sensor can trigger camera 1 and take pictures; In like manner, during to position 2 (P2), take pictures by camera 2; During to position 3 (P3), take pictures by camera 3.Light source and zebra grid are wanted long enough, in the image that each camera photographs grid are arranged all so that guarantee.In this case, between vial and the zebra grid apart from d, enough little so that eliminate phase mutual interference between the diffracted beam; Simultaneously also to leave enough spaces, make the light of capacity penetrate the defective that vial can see that just black background is preceding.
Referring to Fig. 2, the grid striped is reserved certain space at vial relief literal place on one's body and is passed through by bias light, expose the relief literal, illuminate the literal edge, if this zone has defectives such as crackle can produce cut edge clearly on camera image, obviously be different from the edge of relief literal, avoid taking place flase drop to the full extent.
Referring to Fig. 4, on an opaque black panel, parallel to dig out a plurality of rectangles rectangular, and background light can see through the panel of hollow out, form chequered with black and white zebra grid, wherein hollow out rectangular strip and the width of blackstreak are than adjusting according to the concrete shape of vial, color and size.Under the effect of this light source, surface imperfection such as cut are easy to identification more in the grid front of black, and simultaneously, fault of construction can cause the image fault of grid, thereby is detected.
In addition, what time Flame Image Process and the algorithm for pattern recognition about vision processor illustrates:
Whether 1, when a qualified vial passes through, the triggering imageing sensor transmits live signal and catches image for the CCD camera, check the zebra pattern even regular by Flame Image Process and mode identificating software.
2 if following defective, and vision processor will be tackled respectively:
(1) small (black or white) burning into sand is a defective the most common, that be easy to discern in the grid striped.Vision processor can test out by Flame Image Process and mode identificating software, and the user can be provided with size and the density that does not allow to occur burning into sand as required.
(2) defective such as cut will produce the image that is similar to fragment before the grid striped, and vision processor can test out by Flame Image Process and mode identificating software, and the user can be provided with size and the density that does not allow to occur burning into sand as required.
(3) inherent vices such as silk or telephone wire are taken in uneven thickness, inside, the grid striped that camera was photographed is produced acute variation on level or vertical direction, by the direction and the angle of Flame Image Process and mode identificating software change detected, just can determine the type of defective.
(4) defectives such as body gauffer or pressure break if there is not the grid striped, only can't be seen this defective with the high frequency backlight; After adding the grid striped, these defectives will make the grid stripe edge place of the relevant position that camera photographed produce spike, easily detect these defectives by Flame Image Process and mode identificating software.
3, Flame Image Process and mode identificating software are to come analyzing defect by pixel value, number of edges, distributing position, x and attributes such as the y direction length and the frequency of occurrences; We come the percent of pass of control detection by different attribute threshold values is set, and reach the purpose of control product quality.
Claims (5)
1, a kind of automatic optical inspection device that uses refraction grid light sources check vial surface imperfection and inherent vice, it is characterized in that being made up of following four parts: dull and stereotyped high frequency backlight (1), grid striped (2), camera (4) and vision processor (5) are formed.
2, automatic optical inspection device according to claim 1, it is characterized in that: the installation site conllinear of camera (4), and increasing progressively successively apart from horizontal vertical distance, be same zebra pattern striped with what guarantee that each camera photographed, but color is opposite; That is to say that each position of vial all will be checked simultaneously by at least two cameras, realized 360 ° of comprehensive check vial defectives.
3, automatic optical inspection device according to claim 1 is characterized in that: the one-hundred-percent inspection process relies on the SPEED VISION processor (5) that Pentium processor is housed, and guarantees testing result accurately and reliably.
4, automatic optical inspection device according to claim 1, it is characterized in that: for fear of producing flase drop at vial relief literal place on one's body, grid striped (2) will be reserved certain space herein and pass through by bias light, expose the relief literal, illuminate the literal edge, if this zone has defectives such as crackle can produce cut edge clearly on camera image, obviously be different from the edge of relief literal.
5, automatic optical inspection device according to claim 4 is characterized in that: the width of grid striped (2) can be adjusted according to concrete size and dimension, at different vials different grid widths of fringe is arranged.
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| CNA2009100154174A CN101592621A (en) | 2009-05-18 | 2009-05-18 | A kind of automatic optical inspection device that uses refraction grid light sources check vial surface imperfection and inherent vice |
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| CNA2009100154174A CN101592621A (en) | 2009-05-18 | 2009-05-18 | A kind of automatic optical inspection device that uses refraction grid light sources check vial surface imperfection and inherent vice |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102472707A (en) * | 2010-05-20 | 2012-05-23 | 松下电器产业株式会社 | Drug solution determination device and drug solution determination method |
| CN103026212A (en) * | 2010-04-13 | 2013-04-03 | 法国Iris检测仪器公司 | Method for detecting defects in glassware articles, and installation for implementing said method |
| CN103026213A (en) * | 2010-07-23 | 2013-04-03 | Khs有限责任公司 | Detection device and inspection method for bottle seam and embossing alignment |
| CN103097879A (en) * | 2010-04-01 | 2013-05-08 | 法国圣戈班玻璃厂 | Method and device for analyzing the optical quality of a transparent substrate |
| CN103175569A (en) * | 2011-12-21 | 2013-06-26 | 北京兆维电子(集团)有限责任公司 | Acquiring device for single-light-source dual cameras |
| CN103454287A (en) * | 2013-09-05 | 2013-12-18 | 深圳市维图视技术有限公司 | Glass tube defect visual detection method and device |
| CN103472072A (en) * | 2013-09-09 | 2013-12-25 | 深圳市维图视技术有限公司 | Novel visual inspection method and device for glass tube defects |
| CN108431586A (en) * | 2014-08-14 | 2018-08-21 | 克朗斯股份公司 | Optical inspection and optical detection device for container |
| CN109001076A (en) * | 2018-06-11 | 2018-12-14 | 中国矿业大学 | A kind of concentration of emulsion used on-line detecting system and method based on image recognition |
| CN111107257A (en) * | 2020-01-20 | 2020-05-05 | 成都德图福思科技有限公司 | Method for carrying out high-contrast imaging on transparent medium surface etching or embossment pattern |
| CN111912842A (en) * | 2019-05-07 | 2020-11-10 | 湖北省鲲发工程检测有限公司 | Container detection system |
| CN116203035A (en) * | 2023-04-28 | 2023-06-02 | 双峰格雷斯海姆医药玻璃（丹阳）有限公司 | Adjustable visual monitoring equipment |
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2009
- 2009-05-18 CN CNA2009100154174A patent/CN101592621A/en active Pending
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103097879A (en) * | 2010-04-01 | 2013-05-08 | 法国圣戈班玻璃厂 | Method and device for analyzing the optical quality of a transparent substrate |
| CN103097879B (en) * | 2010-04-01 | 2017-01-18 | 法国圣戈班玻璃厂 | Method and device for analyzing the optical quality of a transparent substrate |
| CN103026212A (en) * | 2010-04-13 | 2013-04-03 | 法国Iris检测仪器公司 | Method for detecting defects in glassware articles, and installation for implementing said method |
| CN103026212B (en) * | 2010-04-13 | 2015-07-22 | 法国Iris检测仪器公司 | Method for detecting defects in glassware articles, and installation for implementing said method |
| CN102472707A (en) * | 2010-05-20 | 2012-05-23 | 松下电器产业株式会社 | Drug solution determination device and drug solution determination method |
| CN102472707B (en) * | 2010-05-20 | 2014-03-12 | 松下电器产业株式会社 | Drug solution determination device and drug solution determination method |
| CN103026213A (en) * | 2010-07-23 | 2013-04-03 | Khs有限责任公司 | Detection device and inspection method for bottle seam and embossing alignment |
| CN103026213B (en) * | 2010-07-23 | 2016-03-16 | Khs有限责任公司 | The detection system aligned for bottle seam and embossing and inspection method |
| CN103175569B (en) * | 2011-12-21 | 2015-07-15 | 北京兆维电子(集团)有限责任公司 | Acquiring device for single-light-source dual cameras |
| CN103175569A (en) * | 2011-12-21 | 2013-06-26 | 北京兆维电子(集团)有限责任公司 | Acquiring device for single-light-source dual cameras |
| CN103454287A (en) * | 2013-09-05 | 2013-12-18 | 深圳市维图视技术有限公司 | Glass tube defect visual detection method and device |
| CN103472072A (en) * | 2013-09-09 | 2013-12-25 | 深圳市维图视技术有限公司 | Novel visual inspection method and device for glass tube defects |
| CN108431586A (en) * | 2014-08-14 | 2018-08-21 | 克朗斯股份公司 | Optical inspection and optical detection device for container |
| CN108431586B (en) * | 2014-08-14 | 2021-01-29 | 克朗斯股份公司 | Optical inspection method and optical inspection apparatus for containers |
| CN109001076A (en) * | 2018-06-11 | 2018-12-14 | 中国矿业大学 | A kind of concentration of emulsion used on-line detecting system and method based on image recognition |
| CN111912842A (en) * | 2019-05-07 | 2020-11-10 | 湖北省鲲发工程检测有限公司 | Container detection system |
| CN111107257A (en) * | 2020-01-20 | 2020-05-05 | 成都德图福思科技有限公司 | Method for carrying out high-contrast imaging on transparent medium surface etching or embossment pattern |
| CN116203035A (en) * | 2023-04-28 | 2023-06-02 | 双峰格雷斯海姆医药玻璃（丹阳）有限公司 | Adjustable visual monitoring equipment |
| CN116203035B (en) * | 2023-04-28 | 2023-07-18 | 双峰格雷斯海姆医药玻璃（丹阳）有限公司 | Adjustable visual monitoring equipment |
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Open date: 20091202 |