CN109946315A - A kind of appearance delection device of solar battery sheet - Google Patents
A kind of appearance delection device of solar battery sheet Download PDFInfo
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- CN109946315A CN109946315A CN201910193373.8A CN201910193373A CN109946315A CN 109946315 A CN109946315 A CN 109946315A CN 201910193373 A CN201910193373 A CN 201910193373A CN 109946315 A CN109946315 A CN 109946315A
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- 238000001514 detection method Methods 0.000 claims abstract description 44
- 230000007547 defect Effects 0.000 claims abstract description 35
- 238000003672 processing method Methods 0.000 claims abstract description 7
- 230000002950 deficient Effects 0.000 claims description 7
- 238000005259 measurement Methods 0.000 claims description 4
- 238000004458 analytical method Methods 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 3
- 230000001429 stepping effect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 6
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 210000004744 fore-foot Anatomy 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 1
- 229920005591 polysilicon Polymers 0.000 description 1
- 238000007634 remodeling Methods 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000011895 specific detection Methods 0.000 description 1
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Abstract
The present invention provides a kind of appearance delection devices of solar battery sheet, the parallel detection to various appearances qualities such as solar battery sheet grid line defect, surface defect, color steppings can be realized by digital image processing method, improve the intelligent and comprehensive of solar battery sheet detection；By the way that light source bucket and light guide plate are arranged in camera bellows, ensure the uniformity of light source irradiation, avoid the interference of external environment, improve detection accuracy.
Description
Technical field
The present invention relates to detection device technical fields, and in particular to a kind of appearance delection device of solar battery sheet.
Background technique
With the reduction of earth natural resources, environmental pollution is serious, and the solar energy as renewable resource is gradually by people
Concern, solar battery using more and more extensive, and the open defect detection directly related with its quality then seems especially heavy
It wants.
According to statistics, the open defect detection project of solar battery sheet mainly includes grid line detection, color detection, dirty inspection
Survey, scratch detection, color spot detection, de- brilliant detection etc..Currently, cell piece exterior quality automatic detection device and method compared with
More, through retrieving, patent CN206490044A discloses a kind of solar battery sheet surface defects detection system, mainly to battery
The positive defects detection of piece and colour sorting, but detection device and specific detection method are not described in detail；Patent
CN107768269A discloses a kind of method of dirty defects detection of polysilicon solar battery slice appearance, realizes and lacks to dirty
The detection for falling into feature, only has individual defect detection function, and other surfaces defect can not then detect；Patent CN108674026A
A kind of solar battery sheet press quality detection method and system are disclosed, the positive back side grid line printing quality of cell piece is realized and asks
The detection of topic, but the defect on cell piece surface cannot be detected；Patent CN106990120A discloses a kind of solar battery sheet
Quality determining method and its detection device obtain 3-D image using OTC detection system, realize contactless, lossless decomposition, but
It is slower that the method detects speed, and can not detect cell piece colour deficient, is not suitable for factory's large-scale production detection；So existing
What it is in market in urgent need is that a kind of detection speed is fast, detection more comprehensive system.
Summary of the invention
In order to solve the problems in the existing technology, the present invention provides a kind of detections of the appearance of solar battery sheet to fill
It sets, has the characteristics that detection speed is fast, detection is comprehensive.
Technical proposal that the invention solves the above-mentioned problems are as follows: a kind of appearance delection device of solar battery sheet, including phase
Machine, camera lens, annular light source, camera bellows, light source bucket, light guide plate, white backing plate, power supply, light source controller, computer, camera power supply
Line, light-operated power supply line, external trigger line, data line, industrial camera interface, tested solar battery sheet；
Support plate is equipped in camera bellows, support plate is fixed on camera bellows top, and camera is vertically fixed in support plate, and camera lens is mounted on phase
On machine, camera lens is downward；
Light source bucket is equipped in camera bellows, light source bucket is fixed on camera bellows lower part；Light source bucket includes hemispherical upper cover, cylinder side wall, hemisphere
Shape upper cover is located at the cylindrical side side of placing, and hemispherical upper cover links into an integrated entity with cylinder side wall；
Annular light source is equipped in camera bellows, annular light source is fixed on camera bellows bottom, and annular light source is located at below light source bucket；Annular light source
Between light source bucket be equipped with light guide plate, light guide plate section be it is arc-shaped, guide-lighting board ends respectively with camera bellows side wall, camera bellows bottom surface connect
It connects；
White backing plate is located at immediately below camera bellows, and tested solar battery sheet is placed in white backing plate, is detected solar battery sheet and mirror
The distance between head is 306-380mm.
Further, power supply is connect with camera, light source controller respectively by camera power supply line, light-operated power supply line, light source
Controller is connect by external trigger line with camera；Light source controller is connect by data line with annular light source；Camera passes through industry
Camera interface connects computer, and the real-time acquisition of computer control camera and interpretation of result, computer pass through Digital Image Processing
Method carries out defect analysis.
Further, digital image processing method includes surface defects detection, grid line defects detection, colour deficient stepping；
Surface defects detection is first to be filtered grid line with median filtering, then employ dynamic threshold and divide defect from background, is led to
It crosses gray scale and shape feature is screened, measure defect area；
Grid line defects detection is first to extract grid region, and then the shape feature of analyzed area comes the disconnected grid to grid line, grid line mistake
Slightly screened, finally by measurement obtain line slightly and disconnected grid height；
Colour deficient stepping is to carry out stepping with tone space, encounters the too deep image of color and uses again when cannot be distinguished
Other color space auxiliary judgments.
The present invention have the utility model has the advantages that
(1) present invention can be achieved to the various appearances qualities such as solar battery sheet grid line defect, surface defect, color stepping and
Row detection improves the intelligent and comprehensive of solar battery sheet detection.
(2) light source bucket and light guide plate is arranged in the present invention in camera bellows, ensures the uniformity of light source irradiation, avoids external environment
Interference, improve detection accuracy.
Detailed description of the invention
Fig. 1 is schematic structural view of the invention.
Fig. 2 is electrical connection diagram of the present invention.
Fig. 3 is open defect overhaul flow chart of the present invention to tested solar battery sheet.
In figure: 1- camera, 2- camera lens, 3- annular light source, 4- camera bellows, 5- light source bucket, 6- light guide plate, 7- white backing plate, 8-
Power supply, 9- light source controller, 10- computer, 11- camera power supply line, the light-operated power supply line of 12-, 13- external trigger line, 14- data
Line, 15- industrial camera interface.
Specific embodiment
With reference to the accompanying drawing and specific embodiment the present invention is further illustrated.
A kind of appearance delection device of solar battery sheet, including camera 1, camera lens 2, annular light source 3, camera bellows 4, light source bucket
5, light guide plate 6, white backing plate 7, power supply 8, light source controller 9, computer 10, camera power supply line 11, light-operated power supply line 12, outer touching
Hair line 13, data line 14, industrial camera interface 15；
Camera bellows 4 can influence to avoid environment light to detection, be equipped with support plate in camera bellows 4, support plate is fixed on 4 top of camera bellows,
Camera 1 is vertically fixed in support plate, and camera lens 2 is mounted on camera 1, and camera lens 2 is downward；
Light source bucket 5 is equipped in camera bellows 4, light source bucket 5 is fixed on 4 lower part of camera bellows；Light source bucket 5 includes hemispherical upper cover, cylinder side wall,
Hemispherical upper cover is located at the cylindrical side side of placing, and hemispherical upper cover links into an integrated entity with cylinder side wall；
Annular light source 3 is equipped in camera bellows 4, annular light source 3 is fixed on 4 bottom of camera bellows, and annular light source 3 is located at 5 lower section of light source bucket；Ring
Between shape light source 3 and light source bucket 5 be equipped with light guide plate 6,6 section of light guide plate be it is arc-shaped, 6 both ends of light guide plate respectively with 4 side of camera bellows
Wall, the connection of 4 bottom surface of camera bellows；Light guide plate 6 covers annular light source 3, exports light uniformly, and light direct beam is avoided to be detected solar battery
Piece；
White backing plate 7 is located at immediately below camera bellows 4, and tested solar battery sheet is placed on white backing plate 7, can by white backing plate 7
To effectively filter out mixed and disorderly background, the extraction of battery picture is preferably carried out；Between tested solar battery sheet and camera lens 2 away from
From for 306-380mm；
Power supply 8 is connect with camera 1, light source controller 9 respectively by camera power supply line 11, light-operated power supply line 12, light source controller 9
It is connect by external trigger line 13 with camera 1, to realize the synchronism of Image Acquisition Yu light source light filling；Light source controller 9 passes through number
It is connect according to line 14 with annular light source 3, realizes the light control of light source；Camera 1 connects computer 10 by industrial camera interface 15,
Computer 10 controls the real-time acquisition of camera 1 and interpretation of result, computer 10 are realized by digital image processing method to tested
Solar battery sheet defect analysis.
Digital image processing method includes surface defects detection, grid line defects detection, colour deficient stepping；
Surface defects detection is first to be filtered grid line with median filtering, then employ dynamic threshold and divide defect from background and choose
Out, by gray scale and shape feature identification screening defect kind and lattice, defect area is measured；
Grid line defects detection is first to employ dynamic threshold to extract grid region, and then closed operation is closed disconnected grid, closure rear region with
Closure forefoot area does difference operation, obtains disconnected gate region, and measurement obtains disconnected grid height；Then gray scale opens operation enhancing thick line and other
Grid line contrast, mean value threshold value will be in the thick extracting sections of the biggish line of surrounding contrast's degree, and it is thick that measurement obtains line；
Colour deficient stepping is to carry out stepping with tone space, extracts tonal color space, employs global threshold and rejects grid line, then
Integral color mean value is calculated, is sentenced again with other color spaces auxiliary when encountering the too deep image of color and cannot be distinguished
It is disconnected, it is converted into other planes and carries out color separation.
Many other changes and remodeling can be made by not departing from the spirit and scope of the present invention.It should be appreciated that the present invention is not
It is limited to specific embodiment, the scope of the present invention is defined by the following claims.
Claims (3)
1. a kind of appearance delection device of solar battery sheet, which is characterized in that including camera, camera lens, annular light source, camera bellows,
Light source bucket, light guide plate, white backing plate, power supply, light source controller, computer, camera power supply line, light-operated power supply line, external trigger line,
Data line, industrial camera interface, tested solar battery sheet；
Support plate is equipped in camera bellows, support plate is fixed on camera bellows top, and camera is vertically fixed in support plate, and camera lens is mounted on phase
On machine, camera lens is downward；
Light source bucket is equipped in camera bellows, light source bucket is fixed on camera bellows lower part；Light source bucket includes hemispherical upper cover, cylinder side wall, hemisphere
Shape upper cover is located at the cylindrical side side of placing, and hemispherical upper cover links into an integrated entity with cylinder side wall；
Annular light source is equipped in camera bellows, annular light source is fixed on camera bellows bottom, and annular light source is located at below light source bucket；Annular light source
Between light source bucket be equipped with light guide plate, light guide plate section be it is arc-shaped, guide-lighting board ends respectively with camera bellows side wall, camera bellows bottom surface connect
It connects；
White backing plate is located at immediately below camera bellows, and tested solar battery sheet is placed on white backing plate, be detected solar battery sheet with
The distance between camera lens is 306-380mm.
2. a kind of appearance delection device of solar battery sheet as described in claim 1, which is characterized in that the power supply passes through
Camera power supply line, light-operated power supply line are connect with camera, light source controller respectively, and light source controller is connected by external trigger line and camera
It connects；Light source controller is connect by data line with annular light source；Camera connects computer, computer control by industrial camera interface
The real-time acquisition of camera processed and interpretation of result, computer carry out defect analysis by digital image processing method.
3. a kind of appearance delection device of solar battery sheet as claimed in claim 2, which is characterized in that the digital picture
Processing method includes surface defects detection, grid line defects detection, colour deficient stepping；
Surface defects detection is first to be filtered grid line with median filtering, then employ dynamic threshold and divide defect from background, is led to
It crosses gray scale and shape feature is screened, measure defect area；
Grid line defects detection is first to extract grid region, and then the shape feature of analyzed area comes the disconnected grid to grid line, grid line mistake
Slightly screened, finally by measurement obtain line slightly and disconnected grid height；
Colour deficient stepping is to carry out stepping with tone space, encounters the too deep image of color and uses again when cannot be distinguished
Other color space auxiliary judgments.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910193373.8A CN109946315A (en) | 2019-03-14 | 2019-03-14 | A kind of appearance delection device of solar battery sheet |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910193373.8A CN109946315A (en) | 2019-03-14 | 2019-03-14 | A kind of appearance delection device of solar battery sheet |
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| WO2011016420A1 (en) * | 2009-08-03 | 2011-02-10 | 株式会社エヌ・ピー・シー | Solar cell defect inspection apparatus, defect inspection method and program |
| CN103499585A (en) * | 2013-10-22 | 2014-01-08 | 常州工学院 | Non-continuity lithium battery thin film defect detection method and device based on machine vision |
| CN103872983A (en) * | 2014-04-04 | 2014-06-18 | 天津市鑫鼎源科技发展有限公司 | Device and method for detecting defects on surface of solar cell |
| CN108469439A (en) * | 2018-06-13 | 2018-08-31 | 华南理工大学 | Based on electroluminescent solar battery sheet defect detecting device and method |
| CN108596903A (en) * | 2017-09-27 | 2018-09-28 | 广东产品质量监督检验研究院（国家质量技术监督局广州电气安全检验所、广东省试验认证研究院、华安实验室） | A kind of defect inspection method of the black surround and fragment of solar battery sheet |
| CN109084957A (en) * | 2018-08-31 | 2018-12-25 | 华南理工大学 | The defects detection and color sorting process and its system of photovoltaic solar crystal-silicon battery slice |
| CN210322833U (en) * | 2019-03-14 | 2020-04-14 | 镇江苏仪德科技有限公司 | Appearance detection device for solar cell |
-
2019
- 2019-03-14 CN CN201910193373.8A patent/CN109946315A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011016420A1 (en) * | 2009-08-03 | 2011-02-10 | 株式会社エヌ・ピー・シー | Solar cell defect inspection apparatus, defect inspection method and program |
| CN103499585A (en) * | 2013-10-22 | 2014-01-08 | 常州工学院 | Non-continuity lithium battery thin film defect detection method and device based on machine vision |
| CN103872983A (en) * | 2014-04-04 | 2014-06-18 | 天津市鑫鼎源科技发展有限公司 | Device and method for detecting defects on surface of solar cell |
| CN108596903A (en) * | 2017-09-27 | 2018-09-28 | 广东产品质量监督检验研究院（国家质量技术监督局广州电气安全检验所、广东省试验认证研究院、华安实验室） | A kind of defect inspection method of the black surround and fragment of solar battery sheet |
| CN108469439A (en) * | 2018-06-13 | 2018-08-31 | 华南理工大学 | Based on electroluminescent solar battery sheet defect detecting device and method |
| CN109084957A (en) * | 2018-08-31 | 2018-12-25 | 华南理工大学 | The defects detection and color sorting process and its system of photovoltaic solar crystal-silicon battery slice |
| CN210322833U (en) * | 2019-03-14 | 2020-04-14 | 镇江苏仪德科技有限公司 | Appearance detection device for solar cell |
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