CN103472072A - Novel visual inspection method and device for glass tube defects - Google Patents
Novel visual inspection method and device for glass tube defects Download PDFInfo
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- CN103472072A CN103472072A CN2013104163323A CN201310416332A CN103472072A CN 103472072 A CN103472072 A CN 103472072A CN 2013104163323 A CN2013104163323 A CN 2013104163323A CN 201310416332 A CN201310416332 A CN 201310416332A CN 103472072 A CN103472072 A CN 103472072A
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Abstract
The invention discloses a novel visual inspection method and device for glass tube defects. The device is characterized in that a camera and a lens are connected together and are arranged on one side of a glass tube; the direction pointed by the lens is vertical to the surface of the glass tube; a backlight is arranged on one side, pointing to the extending line of the glass tube, of the lens; the lens points to the light-emitting surface of the backlight; a transparent calibration plate is arranged between the backlight and the glass tube. The transparent calibration plate provided by the invention is provided with at least one non-transparent linear segment, and the surface of the transparent calibration plate is vertical to the direction pointed by the lens. The backlight can emit any monochromatic light, and an included angle of 0 degree to 180 degrees is formed between the light-emitting surface of the backlight and the direction pointed by the lens. The novel visual inspection method and device for glass tube defects can effectively solve the problem that the glass tube quality is difficult to detect, the production and detection efficiency of glass tubes can be improved, the potential safety hazard of a glass tube product can be reduced, and obvious economic and social benefits can be achieved.
Description
Technical field
The present invention relates to a kind of detection method and device of glass tube defect, particularly a kind of visible detection method of glass tube defect and device.
Background technology
Glassware is widely used in people's economic life, and glassware can be divided into glass sheet, glass tube and irregular vitreum according to profile.Wherein glass tube is widely applied in daily life, such as daylight lamp, desk lamp, medical needle tubing etc.The defects such as calculus, bubble, striped and furuncle knurl may appear in transparent glass tube in founding production run.On the Production of Glass streamline, the speed of production of glass tube reaches 3～5 meter per seconds.Because glass tube is transparent, can produce refraction and reflection to light, adopt laser or common vision detection technology can't accomplish effective detection of glass tube defect.The Production of Glass streamline all adopts the method for human eye detection at present, there is the blind spot of vision in the defect of human eye detection glass tube, reason due to light, human eye must just can recognize the defect on glass tube in specific angle, and due to the speed of production requirement of glass tube product, human eye can't be caught up with the movement velocity of product, thus be with defective glass tube to come into the market in enormous quantities, along with state's outer glass pipe product order increase and product quality requires to be tending towards strict.The factory that produces glass tube can only carry out quality testing to the transparent glass tube product by increasing a large amount of manpowers, has increased production cost and the production cycle of glass tube, causes declining to a great extent of product competitiveness.
In order to solve the problem of above-mentioned glass tube defects detection difficulty, the scientific research institution of the factory of Production of Glass and various production testing equipment and producer have all dropped into a large amount of resources and have been researched and developed and design, but effect is not clearly.Therefore for the problems referred to above, designing batch production that a kind of glass tube defective vision detection method adapts to the Production of Glass streamline becomes technical task to be solved is arranged at present.
Summary of the invention
The present invention is intended to address the above problem, and a kind of problem that solves glass tube quality testing difficulty is provided, and improves a kind of new glass tube defective vision detection method of Production of Glass and detection efficiency, and has designed the device that a kind of new glass tube defective vision detects.
For achieving the above object, the invention provides a kind of new glass tube defective vision detection method, comprise camera, camera lens, transparent calibrated plate and backlight, it is characterized in that: camera and camera lens link together, camera and camera lens are positioned at a side of glass tube, the direction of camera lens indication and glass tube Surface Vertical, and backlight is positioned at the side that camera lens points to the extended line of glass tube, camera lens points to the light-emitting area of backlight, and the transparent calibrated plate is placed between backlight and glass tube.
Described camera, can be line-scan digital camera, can be also area array cameras.
Described camera lens, can be tight shot, can be also zoom lens.
Described transparent calibrated plate, have a nontransparent straight-line segment at least, and can adopt linear pattern or grid type scaling board according to camera type, and transparent calibrated plate surface is vertical with the camera lens direction.
Described backlight, can send out any one monochromatic light.
Described backlight, light-source brightness can be constant brightness, can be also brightness-adjustable.
The light-emitting area of described backlight and camera lens direction have 0 degree to the angle between 180 degree.
The invention provides a kind of new glass tube defective vision pick-up unit, comprise camera, camera lens, transparent calibrated plate and backlight, it is characterized in that: camera and camera lens link together, camera and camera lens are positioned at a side of glass tube, the direction of camera lens indication and glass tube Surface Vertical, backlight is positioned at the side that camera lens points to the extended line of glass tube, and camera lens points to the light-emitting area of backlight, and the transparent calibrated plate is placed between backlight and glass tube.
Described camera, can be line-scan digital camera, can be also area array cameras.
Described camera lens, can be tight shot, can be also zoom lens.
Described transparent calibrated plate, have a nontransparent straight-line segment at least, and can adopt linear pattern or grid type scaling board according to camera type, and transparent calibrated plate surface is vertical with the camera lens direction.
Described backlight, can send out any one monochromatic light.
Described backlight, light-source brightness can be constant brightness, can be also brightness-adjustable.
The light-emitting area of described backlight and camera lens direction have 0 degree to the angle between 180 degree.
Contribution of the present invention is, it has broken through the limitation of existing glass tube detection method, a kind of method that adopts vision detection technology to replace human eye to be detected has been proposed, and a kind of method that mode that adopts transparent calibrated plate and backlight combination is detected the glass tube defect proposed, effectively avoided refraction and the reflections affect of glass tube for direct projection light, make the imaging clearly of glass tube, by the nontransparent straight-line segment on the transparent calibrated plate, the optical skew that the defect on glass tube can be caused clearly shows in image, final embodiment is exactly the nontransparent straight-line segment interrupt on the transparent calibrated plate, imperfect, distortion or distortion.With existing glass tube detection method, compare, the present invention has following distinguishing feature:
One, proposed a kind of method that adopts vision detection technology to replace human eye to be detected, can effectively detect the glass tube defect;
Two, the optical skew by the nontransparent straight-line segment on the transparent calibrated plate, the defect on glass tube caused clearly shows in image, when the glass tube defect being detected, be presented as nontransparent straight-line segment interrupt on the transparent calibrated plate, imperfect, distortion or distortion, thereby have defect by the nontransparent straight-line segment interrupt on the transparent calibrated plate, imperfect, distortion or distortion judgement glass tube;
Three, adopt the method for vision-based detection easier, simple in structure, be easy to realize, for the online detection of Production of Glass line, can greatly save cost of labor, shorten the product quality sense cycle;
Four, the economic benefit that has highly significant, effectively improve the Quality and yield of glass tube product, improves the competitive power of glass tube product; Glass tube is the requirement in people's daily life, and the quality that has improved glass tube must reduce the security incident in the use of glass tube product, reduces potential safety hazard, has very significantly social benefit.
The accompanying drawing explanation
Fig. 1 is that the present invention adopts the vision inspection apparatus of camera, camera lens, transparent calibrated plate and backlight composition to carry out the Facad structure figure of glass tube defects detection, wherein (1) is camera, (2) be camera lens, (3) be glass tube, (4) be the transparent calibrated plate, (5) are backlights.
Fig. 2 is that the present invention adopts the vision inspection apparatus of camera, camera lens, transparent calibrated plate and backlight composition to carry out the construction profile of glass tube defects detection, wherein (1) is camera, (2) be camera lens, (3) be glass tube, (4) be the transparent calibrated plate, (5) are backlights.
Fig. 3 is that the present invention adopts the vision inspection apparatus of camera, camera lens, transparent calibrated plate and backlight composition to carry out the diagrammatic cross-section of glass tube defects detection, wherein (1) is camera, (2) be camera lens, (3) be glass tube, (4) be the transparent calibrated plate, (5) are backlights.
Fig. 4 is that the present invention adopts the vision inspection apparatus of line-scan digital camera, camera lens, transparent calibrated plate and backlight composition to carry out the diagrammatic cross-section of glass tube defects detection, wherein (1) is line-scan digital camera, (2) be camera lens, (3) be glass tube, (4) be linear pattern transparent calibrated plate, (5) are backlights.
Fig. 5 is that the present invention adopts the vision inspection apparatus of area array cameras, camera lens, transparent calibrated plate and backlight composition to carry out the diagrammatic cross-section of glass tube defects detection, wherein (1) is area array cameras, (2) be camera lens, (3) be glass tube, (4) be grid type transparent calibrated plate, (5) are backlights.
Fig. 6 is that the present invention adopts the vision inspection apparatus of camera, camera lens, transparent calibrated plate and backlight composition to carry out the vertical view of glass tube defects detection, wherein (1) is camera, (3) be glass tube, (4) are the transparent calibrated plates, and (5) are backlights.
Fig. 7 is that the present invention adopts the vision inspection apparatus of line-scan digital camera, camera lens, transparent calibrated plate and backlight composition to carry out the vertical view of glass tube defects detection, wherein (1) is line-scan digital camera, (3) be glass tube, (4) are linear pattern transparent calibrated plates, and (5) are backlights.
Fig. 8 is that the present invention adopts the vision inspection apparatus of area array cameras, camera lens, transparent calibrated plate and backlight composition to carry out the vertical view of glass tube defects detection, wherein (1) is area array cameras, (3) be glass tube, (4) are grid type transparent calibrated plates, and (5) are backlights.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in detail.
The sectional view of the glass tube defect inspection method that Fig. 3 is camera of the present invention, camera lens, transparent calibrated plate, glass tube, backlight composition and the first embodiment of device thereof, Fig. 6 is the vertical view of the first embodiment for this reason.This glass tube defect inspection method and device contrast traditional glass pipe detection method thereof, the vision inspection apparatus that adopts camera and camera lens to form replaces human eye to carry out the detection of glass tube, adopt backlight to replace daylight lamp or other types light source, can effectively avoid glass tube refract light or catoptrical impact, it is clear to obtain, stable image, adopt the transparent calibrated plate to be placed between camera lens and glass tube, because the defect on glass tube can cause optical change, cause the straight-line segment on the transparent calibrated plate to interrupt, imperfect, distortion or distortion, make the defect state that can reflect clearly glass tube on the image of collected by camera, thereby draw the testing result needed.
The sectional view of the glass tube defect inspection method that Fig. 4 is line-scan digital camera of the present invention, camera lens, linear pattern transparent calibrated plate, glass tube, backlight composition and the second embodiment of device thereof, Fig. 7 is the vertical view of the second embodiment for this reason.This glass tube defect inspection method and device contrast traditional glass pipe detection method thereof, the vision inspection apparatus that adopts camera and camera lens to form replaces human eye to carry out the detection of glass tube, adopt backlight to replace daylight lamp or other types light source, can effectively avoid glass tube refract light or catoptrical impact, it is clear to obtain, stable image, adopt the transparent calibrated plate to be placed between camera lens and glass tube, because the defect on glass tube can cause optical change, cause the straight-line segment on the transparent calibrated plate to interrupt, imperfect, distortion or distortion, make the defect state that can reflect clearly glass tube on the image of collected by camera, thereby draw the testing result needed.
The sectional view of the glass tube defect inspection method that Fig. 5 is area array cameras of the present invention, camera lens, grid type transparent calibrated plate, glass tube, backlight composition and the 3rd embodiment of device thereof, Fig. 8 is the vertical view of the 3rd embodiment for this reason.This glass tube defect inspection method and device contrast traditional glass pipe detection method thereof, the vision inspection apparatus that adopts camera and camera lens to form replaces human eye to carry out the detection of glass tube, adopt backlight to replace daylight lamp or other types light source, can effectively avoid glass tube refract light or catoptrical impact, it is clear to obtain, stable image, adopt the transparent calibrated plate to be placed between camera lens and glass tube, because the defect on glass tube can cause optical change, cause the mesh lines on the transparent calibrated plate to interrupt, imperfect, distortion or distortion, make the defect state that can reflect clearly glass tube on the image of collected by camera, thereby draw the testing result needed.
The Facad structure schematic diagram of the glass tube defect inspection method that Fig. 1 is camera of the present invention, camera lens, transparent calibrated plate, glass tube, backlight composition and above first, second, third embodiment of device thereof.This glass tube defect inspection method and device contrast traditional glass pipe detection method thereof, the vision inspection apparatus that adopts camera and camera lens to form replaces human eye to carry out the detection of glass tube, adopt backlight to replace daylight lamp or other types light source, can effectively avoid glass tube refract light or catoptrical impact, it is clear to obtain, stable image, adopt the transparent calibrated plate to be placed between camera lens and glass tube, because the defect on glass tube can cause optical change, cause the straight-line segment on the transparent calibrated plate to interrupt, imperfect, distortion or distortion, make the defect state that can reflect clearly glass tube on the image of collected by camera, thereby draw the testing result needed.
The side structure schematic diagram of the glass tube defect inspection method that Fig. 2 is camera of the present invention, camera lens, transparent calibrated plate, glass tube, backlight composition and above first, second, third embodiment of device thereof.This glass tube defect inspection method and device contrast traditional glass pipe detection method thereof, the vision inspection apparatus that adopts camera and camera lens to form replaces human eye to carry out the detection of glass tube, adopt backlight to replace daylight lamp or other types light source, can effectively avoid glass tube refract light or catoptrical impact, it is clear to obtain, stable image, adopt the transparent calibrated plate to be placed between camera lens and glass tube, because the defect on glass tube can cause optical change, cause the straight-line segment on the transparent calibrated plate to interrupt, imperfect, distortion or distortion, make the defect state that can reflect clearly glass tube on the image of collected by camera, thereby draw the testing result needed.
Although by above embodiment, the present invention is disclosed, but scope of the present invention is not limited to this, under the condition that does not depart from the present invention's design, similar or the equivalent element that above each member can be understood with affiliated technical field personnel is replaced, but the number of straight segments on the transparent calibrated plate that the present invention proposes is also parameter, comprises 1 or a plurality of straight-line segment.
In sum, a kind of new glass tube defective vision detection method that the present invention proposes and device thereof have realizes every advantages such as simple, that cost is low, pollution-free, stable, can effectively solve the low problem of detection efficiency in current Production of Glass, effectively improve the Quality and yield of glass tube product, there is the economic benefit of highly significant; Glass tube is the requirement in people's daily life, has improved direct result that the quality of glass tube brings and is and reduced the security incident of glass tube product in using, and reduces potential safety hazard, has very significantly social benefit.
Claims (10)
1. new glass tube defective vision detection method and a device thereof, comprise camera, camera lens, transparent calibrated plate and backlight, it is characterized in that: camera and camera lens link together, camera and camera lens are positioned at a side of glass tube, the direction of camera lens indication and glass tube Surface Vertical, backlight is positioned at the side that camera lens points to the extended line of glass tube, and camera lens points to the light-emitting area of backlight, and the transparent calibrated plate is placed between backlight and glass tube.
2. a kind of new glass tube defective vision detection method and device thereof as claimed in claim 1, it is characterized in that: described camera can be line-scan digital camera, can be also area array cameras.
3. a kind of new glass tube defective vision detection method and device thereof as claimed in claim 1, it is characterized in that: described camera lens can be tight shot, can be also zoom lens.
4. a kind of new glass tube defective vision detection method and device thereof as claimed in claim 1, it is characterized in that: described transparent calibrated plate has a nontransparent straight-line segment at least.
5. a kind of new glass tube defective vision detection method and device thereof as claimed in claim 4, it is characterized in that: described transparent calibrated plate can adopt linear pattern scaling board or grid type scaling board according to camera type.
6. a kind of new glass tube defective vision detection method and device thereof as claimed in claim 4 is characterized in that: described transparent calibrated plate surface is vertical with the camera lens direction.
7. a kind of new glass tube defective vision detection method and device thereof as claimed in claim 1, it is characterized in that: the light-emitting area of described backlight and camera lens direction have 0 degree to the angle between 180 degree.
8. a kind of new glass tube defective vision detection method and device thereof as claimed in claim 1 is characterized in that: described backlight, can send out any one monochromatic light.
9. a kind of new glass tube defective vision detection method and device thereof as claimed in claim 8 is characterized in that: described backlight, and light-source brightness can be constant brightness, it can be also brightness-adjustable, if brightness-adjustable, can be the manual adjustments mode, can be also digital regulated mode.
10. a kind of new glass tube defective vision detection method and device thereof as claimed in claim 1, it is characterized in that: by the nontransparent straight-line segment on the transparent calibrated plate, in the image that the optical skew that the defect on glass tube can be caused obtains at camera, clearly show, directly be presented as nontransparent straight-line segment interrupt on transparent panel, imperfect, distortion or distortion, when the nontransparent straight-line segment interrupt in the image that obtains of judgement camera on the transparent calibrated plate, imperfect, distortion or distortion, can judge that there is defect in glass tube.
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| CN2013104163323A CN103472072A (en) | 2013-09-09 | 2013-09-09 | Novel visual inspection method and device for glass tube defects |
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Cited By (5)
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| CN104251867A (en) * | 2014-09-15 | 2014-12-31 | 河北省激光研究所 | On-line system and method for detecting defects of glass tube |
| CN108896576A (en) * | 2018-05-08 | 2018-11-27 | 无锡九霄科技有限公司 | A kind of endoscopic cavity components appearance detecting method based on area array cameras |
| CN113567342A (en) * | 2021-08-20 | 2021-10-29 | 安徽顺鼎阿泰克科技有限公司 | Transparent object defect detection method and device |
| CN114545541A (en) * | 2019-08-01 | 2022-05-27 | 上海塞普机电工程技术有限公司 | Grating and defect detecting and digital imaging device based on grating |
| CN116399882A (en) * | 2023-04-23 | 2023-07-07 | 合肥图迅电子科技有限公司 | Wafer defect detection device and detection method |
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Application publication date: 20131225 |