CN112505067A - Method for detecting defects of transparent glass after film coating - Google Patents
Method for detecting defects of transparent glass after film coating Download PDFInfo
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- CN112505067A CN112505067A CN202011101079.9A CN202011101079A CN112505067A CN 112505067 A CN112505067 A CN 112505067A CN 202011101079 A CN202011101079 A CN 202011101079A CN 112505067 A CN112505067 A CN 112505067A
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- light intensity
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- 230000007547 defect Effects 0.000 title claims abstract description 54
- 239000011521 glass Substances 0.000 title claims abstract description 43
- 238000000034 method Methods 0.000 title claims abstract description 41
- 239000007888 film coating Substances 0.000 title claims abstract description 11
- 238000009501 film coating Methods 0.000 title claims abstract description 11
- 238000001514 detection method Methods 0.000 claims abstract description 31
- 239000012780 transparent material Substances 0.000 claims description 40
- 238000003384 imaging method Methods 0.000 claims description 38
- 238000002834 transmittance Methods 0.000 claims description 9
- 230000003287 optical effect Effects 0.000 claims description 7
- 238000005286 illumination Methods 0.000 claims description 5
- 238000000576 coating method Methods 0.000 abstract description 25
- 239000011248 coating agent Substances 0.000 abstract description 18
- 239000011247 coating layer Substances 0.000 abstract description 6
- 238000012545 processing Methods 0.000 abstract description 4
- 238000012360 testing method Methods 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 238000012544 monitoring process Methods 0.000 abstract description 3
- 239000010410 layer Substances 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 238000010219 correlation analysis Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000005357 flat glass Substances 0.000 description 1
- 230000010365 information processing Effects 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 230000036632 reaction speed Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/95—Investigating the presence of flaws or contamination characterised by the material or shape of the object to be examined
- G01N21/958—Inspecting transparent materials or objects, e.g. windscreens
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
Abstract
The invention discloses a method for detecting defects of transparent glass after film coating. The method for detecting the defects of the transparent glass after coating realizes that the removal treatment of the coating layer is not needed in the detection process, reduces unnecessary steps, saves the time for implementing the method, eliminates the inherent error of test data, can truly reflect the quality of the coating layer in the coating process, is convenient for monitoring the coating processing quality of the coating process, and is beneficial to improving the quality of photovoltaic glass products.
Description
Technical Field
The invention relates to the technical field of glass coating, in particular to a method for detecting defects of transparent glass after coating.
Background
In the production process of film-coated transparent materials (such as flat glass, inorganic glass, organic glass, acrylic and the like), quality control is an important link. At present, many production processes do not have automatic detection equipment and rely on manual detection to control quality. However, the method for manually detecting defects has the following problems: if the detection is missed, the false detection is carried out, the control standards of the glass output quality are inconsistent, and the subjective factors are more; the required quality data cannot be obtained in real time, and the statistics and query of the quality data are inconvenient; the detection efficiency is low, the automation degree is low, and the cost is high.
Some automatic detection equipment for the coated transparent material also exists in the prior art, although the detection equipment can detect the defects of the coated transparent material, the three-dimensional relative position of the defects in the coated transparent material cannot be identified on line, the equipment cannot be suitable for the special-shaped coated transparent material with rough surface, uneven surface and the like, a user cannot obtain visual distribution of the defects in the coated transparent material, and the equipment cannot detect the non-flat transparent material. However, the three-dimensional relative position of the defect in the material is an important index for guiding the analysis of the defect cause, the adjustment of the material production process, the grading of the finished material product and the like. In order to perform the above-mentioned correlation analysis on the product, offline sampling of the defect is often required, but offline analysis of the three-dimensional relative position of the defect of the coated transparent material results in poor real-time performance and slow reaction speed, and greatly affects the production operation efficiency and the product yield.
After the glass is coated, the light transmittance of the glass is changed compared with that of the original piece of glass before coating, the coating aims to increase the light transmittance of the whole glass, and the optical performance detection of the coated glass quantifies the increased light transmittance of the coated layer and is used for judging the quality of the coating process, judging the quality of the coated layer and evaluating the quality of the coated layer, so the detection of the light transmittance of the coated glass becomes particularly important.
The previous detection method for the light transmittance of the part of the film coating layer of the coated photovoltaic glass is mostly an integral measurement method, and mainly comprises the following steps: the non-online test method and the online test method cannot overcome inherent errors caused by different glasses or different test instruments, accurately quantize the light transmittance of the part of the film coating layer, and cannot well judge the quality of the film coating process, the quality of the film coating layer and evaluate the quality of the film coating layer.
Disclosure of Invention
The main objective of the present invention is to provide a method for detecting defects of a transparent glass after coating, which can solve the problems of the background art and can judge the light intensity information value in the transparent material after coating.
In order to achieve the above purposes, the technical scheme adopted by the invention is as follows:
a method for detecting defects of transparent glass after film coating comprises the following steps:
a, a detection system moves and controls an imaging device to continuously scan a coated transparent material when the coated transparent material is illuminated, and the light intensity of the coated transparent material is continuously detected;
step B, comparing the detected light intensity information values to obtain a maximum light intensity information value M;
step C, judging whether the real-time light intensity information value of the detection environment is larger than or equal to the preset condition value of the maximum light intensity information value M or whether the real-time detected light intensity information value is larger than or equal to a first light brightness absolute threshold value N;
d, when the real-time light intensity information value is larger than or equal to the maximum light intensity information value M or the light intensity information value is larger than or equal to the first light brightness absolute threshold value N, stopping the movement of the detection system, obtaining real image information of the defect and defect virtual image information imaged in a mirror reflection surface of the detection system, and obtaining the real image information of the defect for the special-shaped coated transparent material with a rough and uneven surface;
and E, when the special-shaped coated transparent material is judged to be unqualified, the detection control system sends out an instruction for removing the unqualified special-shaped coated transparent material.
In the method for detecting defects after the transparent glass is coated, the step a further includes a step a1, in which the combined light sources are controlled to irradiate the coated transparent material, and different illumination modes are provided by different combinations of the combined light sources in a time-sharing switching manner.
In the method for detecting the defects after the transparent glass is coated, the step D further includes a step D1, and when the real-time light intensity information value is smaller than the maximum light intensity information value M or the light intensity information value is smaller than the first light brightness absolute threshold value N, the intelligent device continues to move.
In the method for detecting defects after coating of the transparent glass, the predetermined condition value of the maximum light intensity information value M in the step C means that the real-time light intensity information value is 60-80% of the maximum light intensity information value M.
According to the method for detecting the defects of the coated transparent glass, the real-time light intensity information value is 70% of the maximum light intensity information value M.
According to the method for detecting the defects after the transparent glass is coated, the combined light source comprises one or more of a reflection bright light source, a reflection dark light source, a transmission bright light source, a transmission dark light source and a long-shot dark light source.
In the method for detecting the defects of the coated transparent glass, the imaging device comprises an imaging component for collecting optical signals and converting the optical signals into electric signals, and the imaging component is a CCD linear array imaging component or a CMOS linear array imaging component or other linear array imaging components; the mirror imaging assembly is a low-transmittance coated mirror.
According to the method for detecting the defects of the coated transparent glass, the number of the imaging devices is multiple, and the imaging devices are arranged above and/or below the coated transparent material.
The invention has the advantages that: the method for detecting the defects of the transparent glass after coating realizes that the removal treatment of the coating layer is not needed in the detection process, reduces unnecessary steps, saves the time for implementing the method, eliminates the inherent error of test data, can truly reflect the quality of the coating layer in the coating process, is convenient for monitoring the coating processing quality of the coating process, and is beneficial to improving the quality of photovoltaic glass products.
Detailed Description
The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art.
The invention provides a method for detecting defects of transparent glass after film coating, which comprises the following steps:
a, a detection system moves and controls an imaging device to continuously scan the coated transparent material when the coated transparent material is illuminated, and the light intensity of the coated transparent material is continuously detected;
step B, comparing the detected light intensity information values to obtain a maximum light intensity information value M;
step C, judging whether the real-time light intensity information value of the detection environment is larger than or equal to the preset condition value of the maximum light intensity information value M or whether the real-time detected light intensity information value is larger than or equal to a first light brightness absolute threshold value N;
d, when the real-time light intensity information value is larger than or equal to the maximum light intensity information value M or the light intensity information value is larger than or equal to the first light brightness absolute threshold value N, stopping the movement of the detection system, obtaining real image information of the defect and defect virtual image information imaged in a mirror reflection surface of the detection system, and obtaining the real image information of the defect for the special-shaped coated transparent material with a rough and uneven surface;
and E, when the special-shaped coated transparent material is judged to be unqualified, the detection control system sends out an instruction for removing the unqualified special-shaped coated transparent material.
Further, in a preferred embodiment of the method for detecting defects after coating of transparent glass, the step a further includes a step a1, in which the combined light sources are controlled to irradiate the coated transparent material, and different illumination modes are provided by different combinations of the combined light sources through time-sharing switching.
Further, in a preferred embodiment of the method for detecting defects after the transparent glass is coated, the step D further includes a step D1, when the real-time light intensity information value is smaller than the maximum light intensity information value M or the light intensity information value is smaller than the first absolute light intensity threshold N, the intelligent device continues to move.
Further, in a preferred embodiment of the method for detecting defects after coating a transparent glass according to the present invention, the predetermined condition value of the maximum light intensity information value M in the step C is that the real-time light intensity information value is 60-80% of the maximum light intensity information value M.
Further, in a preferred embodiment of the method for detecting defects after coating of transparent glass according to the present invention, the real-time light intensity information value is 70% of the maximum light intensity information value M. The first light brightness absolute threshold value N is obtained when the light brightness is 300-350 lux.
Contain removal module, drive module, power module and control module, removal module sets up at detecting system's top, control module with drive module connects under control module's effect, drive module drives removal module removes, still includes photosensitive sensor, sets up in the smart machine bottom for detect light intensity, convey light intensity information value to control module.
The control module includes: the information storage submodule is used for presetting a first light brightness absolute threshold N; and the information processing submodule is used for obtaining a maximum light intensity information value M according to the light intensity information value detected by the photosensitive sensor.
The light intensity information value detected by the photosensitive sensor in real time is larger than or equal to a first light intensity absolute threshold value N, or the light intensity information value detected by the photosensitive sensor in real time is larger than or equal to 60% -80% of a maximum light intensity information value M, and when the brightness is not lower than 60% -80% of the maximum light intensity information value M, the detection system is located at the outer edge of the coated transparent material.
Further, in a preferred embodiment of the method for detecting defects after coating of transparent glass, the combined light source includes one or more of a reflective bright light source, a reflective dark light source, a transmissive bright light source, a transmissive dark light source, and a transmissive dark light source.
Further, in a preferred embodiment of the method for detecting defects after the transparent glass is coated with a film, the imaging device comprises an imaging component for collecting optical signals and converting the optical signals into electrical signals, wherein the imaging component is a CCD linear array imaging component or a CMOS linear array imaging component or other linear array imaging components; the mirror imaging assembly is a low-transmittance coated mirror.
In a preferred embodiment of the method for detecting defects after coating of transparent glass according to the present invention, the number of the imaging devices is plural, and the plural imaging devices are disposed above and/or below the coated transparent material.
By introducing at least one mirror imaging assembly, the imaging device has an independent imaging mode and a combined imaging mode under the control of the controller, and is matched with a plurality of illumination modes provided by the combined light source, so that multi-channel image acquisition of the defects of the coated transparent material can be realized, multi-channel image data of the surface and/or internal defects of the coated transparent material in different illumination modes and imaging modes can be captured, and defect images of the surface and/or internal defects of the coated transparent material in the mirror imaging assembly are captured by controlling the change of the imaging mode, thereby overcoming the limitation that the imaging device is only suitable for flat coated transparent materials in the prior art. Compared with the existing defect detection system, the method greatly enriches the information quantity of image acquisition, improves the accuracy and precision of defect information, improves the detection rate and recognition rate of defects of the coated transparent material, facilitates the subsequent analysis of specific three-dimensional positions of the defects of the product and the analysis of the types of the defects of the product, is favorable for improving the online processing quality of the coated transparent material, and has wide application value.
The method for detecting the defects of the transparent glass after coating realizes that the removal treatment of the coating layer is not needed in the detection process, reduces unnecessary steps, saves the time for implementing the method, eliminates the inherent error of test data, can truly reflect the quality of the coating layer in the coating process, is convenient for monitoring the coating processing quality of the coating process, and is beneficial to improving the quality of photovoltaic glass products.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (8)
1. A method for detecting defects of transparent glass after film coating is characterized by comprising the following steps:
a, a detection system moves and controls an imaging device to continuously scan the coated transparent material when the coated transparent material is illuminated, and the light intensity of the coated transparent material is continuously detected;
step B, comparing the detected light intensity information values to obtain a maximum light intensity information value M;
step C, judging whether the real-time light intensity information value of the detection environment is larger than or equal to the preset condition value of the maximum light intensity information value M or whether the real-time detected light intensity information value is larger than or equal to a first light brightness absolute threshold value N;
d, when the real-time light intensity information value is larger than or equal to the maximum light intensity information value M or the light intensity information value is larger than or equal to the first light brightness absolute threshold value N, stopping the movement of the detection system, obtaining real image information of the defect and defect virtual image information imaged in a mirror reflection surface of the detection system, and obtaining the real image information of the defect for the special-shaped coated transparent material with a rough and uneven surface;
and E, when the special-shaped coated transparent material is judged to be unqualified, the detection control system sends out an instruction for removing the unqualified special-shaped coated transparent material.
2. The method for detecting the defects of the coated transparent glass as claimed in claim 1, wherein the step A further comprises a step A1 of controlling the combined light sources to irradiate the coated transparent material, and providing different illumination modes by different combinations of the combined light sources through time-sharing switching.
3. The method according to claim 1, wherein the step D further comprises a step D1, wherein when the real-time light intensity information value is less than the maximum light intensity information value M or the light intensity information value is less than the first absolute light intensity threshold value N, the intelligent device continues to move.
4. The method of claim 1, wherein the predetermined condition value of the maximum light intensity information value M in step C is that the real-time light intensity information value is 60-80% of the maximum light intensity information value M.
5. The method of claim 4, wherein the real-time light intensity information value is 70% of the maximum light intensity information value M.
6. The method of claim 1, wherein the combined light source comprises one or more of a reflective bright light source, a reflective dark light source, a transmissive bright light source, a transmissive dark light source, and a transmissive dark light source.
7. The method for detecting the defects of the transparent glass after being coated with the film as claimed in claim 1, wherein the imaging device comprises an imaging component for collecting optical signals and converting the optical signals into electric signals, and the imaging component is a CCD linear array imaging component, a CMOS linear array imaging component or other linear array imaging components; the mirror imaging assembly is a low-transmittance coated mirror.
8. The method for detecting the defects of the transparent glass after being coated according to claim 1, wherein the number of the imaging devices is multiple, and a plurality of the imaging devices are arranged above and/or below the transparent material after being coated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011101079.9A CN112505067A (en) | 2020-10-15 | 2020-10-15 | Method for detecting defects of transparent glass after film coating |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011101079.9A CN112505067A (en) | 2020-10-15 | 2020-10-15 | Method for detecting defects of transparent glass after film coating |
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| Publication Number | Publication Date |
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| CN112505067A true CN112505067A (en) | 2021-03-16 |
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| CN202011101079.9A Pending CN112505067A (en) | 2020-10-15 | 2020-10-15 | Method for detecting defects of transparent glass after film coating |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115100102A (en) * | 2022-05-10 | 2022-09-23 | 厦门微亚智能科技有限公司 | Coated lens defect detection method, device and equipment and readable storage medium |
| CN117388314A (en) * | 2023-12-13 | 2024-01-12 | 徐州丰诚新材料科技有限公司 | Intelligent detection method and system for molding temperature of optical glass |
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2020
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115100102A (en) * | 2022-05-10 | 2022-09-23 | 厦门微亚智能科技有限公司 | Coated lens defect detection method, device and equipment and readable storage medium |
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