CN109444156A - A kind of image capturing system for textile defect detection - Google Patents
A kind of image capturing system for textile defect detection Download PDFInfo
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- CN109444156A CN109444156A CN201811584599.2A CN201811584599A CN109444156A CN 109444156 A CN109444156 A CN 109444156A CN 201811584599 A CN201811584599 A CN 201811584599A CN 109444156 A CN109444156 A CN 109444156A
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- image capturing
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- 239000004753 textile Substances 0.000 title claims abstract description 61
- 238000001514 detection method Methods 0.000 title claims abstract description 50
- 230000007547 defect Effects 0.000 title claims abstract description 46
- 230000004313 glare Effects 0.000 claims abstract description 14
- 230000017525 heat dissipation Effects 0.000 claims description 23
- 239000002184 metal Substances 0.000 claims description 18
- 239000004065 semiconductor Substances 0.000 claims description 13
- 239000000178 monomer Substances 0.000 claims description 11
- 239000011248 coating agent Substances 0.000 claims description 7
- 238000000576 coating method Methods 0.000 claims description 7
- 238000005286 illumination Methods 0.000 claims description 5
- 238000009434 installation Methods 0.000 claims description 3
- 230000007704 transition Effects 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims description 2
- 239000004744 fabric Substances 0.000 claims 1
- 238000005516 engineering process Methods 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 7
- 238000010586 diagram Methods 0.000 description 9
- 238000005070 sampling Methods 0.000 description 6
- 239000000126 substance Substances 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000002775 capsule Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000024241 parasitism Effects 0.000 description 1
- 238000012216 screening 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
-
- 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
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
-
- 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
- G01N21/8851—Scan or image signal processing specially adapted therefor, e.g. for scan signal adjustment, for detecting different kinds of defects, for compensating for structures, markings, edges
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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)
- Engineering & Computer Science (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Signal Processing (AREA)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
Abstract
The invention discloses a kind of image capturing systems for textile defect detection, including being located to the miniature video camera head assembly right above defect detection textile direction of transfer, the border of miniature video camera head assembly is provided with the supplementary lighting sources component being spacedly distributed, miniature video camera head assembly is connected in the reserved area in the middle part of supplementary lighting sources component, be fixed with shading shade assembly in miniature video camera head assembly shooting direction, shading shade assembly extend downwardly out supplementary lighting sources component from reserved area where plane on.The present invention effectively shields veiling glare, signal-to-noise ratio is set to improve 14dB, miniature webcam assembly radiating effect is good, and the operation is stable degree is high, passes through supplementary lighting sources component minimizing from projection by tested textile, textile is remaining will not to express in digital picture from projection, more accurate reliable digital image data source is provided for image recognition technology, so that recognition confidence is reached industrial scale applications standard, is skillfully constructed, structure novel has a good application prospect.
Description
Technical field
The present invention relates to textile defect detection technical fields, and in particular to a kind of image for textile defect detection
Acquisition system.
Background technique
Traditional textile defect detection relies primarily on artificial progress, less to use automatic detection means.With science
The fault automatic detection of the rapid advances of technology, textile is also developed rapidly.Currently, the fault of existing textile
Automatic detection in terms of digital image acquisition, it is main using the micro-lens of industrial camera or integrated single-chip sensor into
Row photoelectric conversion, the dedicated technical measures not used for the improvement of digital image acquisition environment usually, leads to digital picture
Quality is lower, relies primarily on image recognition technology to complete to detect, specific as follows accordingly, there exist following disadvantage:
(1), the problem bad due to image capture environment, causes the precision of digital picture and reduction degree lower, therefore to image
Identification technology requires to greatly improve, and recognition confidence is difficult to reach industrial scale applications standard, not can guarantee the inspection of textile fault
The accuracy of survey；
(2), industrial camera volume is big, it is difficult to program, integration it is poor, design limitation is very big, can not be suitable for textile fault examine
Survey the relatively limited environment in space；
(3), the micro-lens of integrated single-chip sensor, do not have anti-veiling glare function, and sensor is influenced by ambient temperature bright
Aobvious, signal-to-noise ratio is very low when with light source integrated installation, it is difficult to reach required acquisition precision, and then not can guarantee textile fault
The accuracy of detection；
(4), the operating cost of industrial camera is high, and maintainability performance is poor.
It is that can not improve digitized map during textile defect detection if not can solve digital image acquisition environmental problem
As the accuracy of data source, subsequent image identification technology all mustn't go to accurate textile defect detection essence perfect
Therefore exactness improves the accuracy in digital image data source, construct the good sampling environment of textile defect detection, be to work as
Preceding urgent problem.
Summary of the invention
The purpose of the present invention is overcome digital image data source during existing textile defect detection can not be accurate
The problem of sampling.Image capturing system for textile defect detection of the invention, effectively shielding veiling glare, improve signal-to-noise ratio
14dB, miniature webcam assembly radiating effect is good, and the operation is stable degree is high, passes through supplementary lighting sources component throwing certainly by tested textile
Shadow minimizes, and textile is remaining will not to express in digital picture from projection, provides for image recognition technology more smart
Really reliable digital image data source makes recognition confidence reach industrial scale applications standard, building textile defect detection
Good sampling environment, is skillfully constructed, and structure novel has a good application prospect.
In order to achieve the above object, the technical scheme adopted by the invention is that:
A kind of image capturing system for textile defect detection, including be located to defect detection textile direction of transfer just on
The miniature video camera head assembly of side, the border of the miniature video camera head assembly is provided with the supplementary lighting sources component being spacedly distributed, institute
It states in the reserved area that miniature video camera head assembly is connected in the middle part of supplementary lighting sources component, the miniature video camera head assembly shooting direction
On be fixed with shading shade assembly, the shading shade assembly extend downwardly out supplementary lighting sources component from reserved area where plane
On.
It is previously described for the image capturing system of textile defect detection, the miniature video camera head assembly includes heat dissipation metal
Support plate and miniature webcam are provided with recessed hole in the heat dissipation metal support plate, recess are trapped in the miniature webcam
In hole, the heat dissipation metal support plate and supplementary lighting sources attached components are touched, and form heat dissipation channel for miniature webcam.
It is previously described for the image capturing system of textile defect detection, the shading shade assembly includes shading outer cover and screening
Light inner cover, the shading inner cover are embedded in the inside of shading outer cover, and the shading outer cover is fixed under heat dissipation metal support plate
Surface.
It is previously described for the image capturing system of textile defect detection, the outer surface of the shading outer cover is provided with heat-insulated
Coating, and the truncated rectangular pyramids shape that is positive, the big extreme direction face of the shading outer cover are underlying to defect detection textile, institute
The small end border for stating shading outer cover is provided with fixed plate, and the fixed plate is installed to heat dissipation metal support plate for shading shade assembly
On,
The inner surface of the shading inner cover is provided with light-absorbing coating, and several positive truncated rectangular pyramids lists by stacking gradually from top to bottom
Body is constituted, identical as the shape of lower layer's positive truncated rectangular pyramids monomer upper surface is located at positioned at the positive truncated rectangular pyramids monomer underside shape in upper layer,
The inner wall of the shading inner cover is provided with shield bars diagonally downward, phase in the border for being located at each layer positive truncated rectangular pyramids monomer upper surface
Veiling glare is formed between two adjacent shield bars and intercepts groove, so that the inner wall of shading inner cover be made to form multistage aperture diaphragm.
It is previously described for the image capturing system of textile defect detection, it is characterised in that: the inclination angle of the shield bars
Degree is between 90 ° -135 °.
It is previously described for the image capturing system of textile defect detection, the height phase of the shading outer cover, shading inner cover
Together, and four sides of shading outer cover are stupefied for arc transition.
Be previously described for the image capturing system of textile defect detection, the supplementary lighting sources component include several groups successively
End to end light source box is constituted, and is formed in the middle part of all groups of light source box for installing miniature video camera head assembly and shading shade assembly
Reserved area,
Each light source box includes control circuit board, LED light bar, film layer and light source box dianegative, the control circuit board, light
It is fixedly connected between source capsule dianegative by being located at the connecting column of quadrangle, the LED light bar is a plurality of and sets in parallel at equal intervals
It sets between control circuit board, light source box dianegative in region, the film layer is attached to the upper table of light source box dianegative
Face is provided with side block tabula rasa between adjacent connecting column.
It is previously described for the image capturing system of textile defect detection, the direction of illumination of the LED light bar is taken the photograph with miniature
As the shooting direction of head is coaxial arrangement.
It is previously described for the image capturing system of textile defect detection, the supplementary lighting sources component includes four groups successively first
Light source box that tail connects is constituted, and is formed in the middle part of four groups of light source box for installing the reserved of miniature video camera head assembly and shading shade assembly
Region.
It is previously described for the image capturing system of textile defect detection, LED driving is provided in the control circuit board
Circuit, the LED drive circuit include transistor Q1, transistor Q2 and metal-oxide-semiconductor Q3, and the base stage of the transistor Q1 passes through resistance
The external driving control signal of R1, the base stage of the transistor Q1 also pass through resistance R2 and are connected to the ground, the collection of the transistor Q1
Electrode is connected by resistance R4 with control voltage Vgd, and the emitter of the transistor Q1 is connected to the ground, the transistor Q1
Collector also pass through resistance R5 and be connected with the base stage of transistor Q2, the emitter and control voltage Vgd of the transistor Q2
It is connected, the collector of the transistor Q2 is connected with the grid of one end of resistance R4, metal-oxide-semiconductor Q3 respectively, the resistance R4
The other end be connected to the ground, the source electrode of the metal-oxide-semiconductor Q3 is connected with the anode of LED light bar, the cathode of the LED light bar with
Ground is connected, and the drain electrode of the metal-oxide-semiconductor Q3 is connected with supply voltage Vd.
The beneficial effects of the present invention are: the image capturing system for textile defect detection of the invention, effectively shields
Veiling glare makes signal-to-noise ratio improve 14dB, and miniature webcam assembly radiating effect is good, and the operation is stable degree is high, passes through supplementary lighting sources component
By minimizing from projection for tested textile, textile is remaining will not to express in digital picture from projection, know for image
Other technology provides more accurate reliable digital image data source, and recognition confidence is made to reach industrial scale applications standard, structure
The good sampling environment for building textile defect detection, is skillfully constructed, and structure novel has a good application prospect.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the image capturing system for textile defect detection of the invention；
Fig. 2 is the side view of the image capturing system for textile defect detection of the invention；
Fig. 3 is the structural schematic diagram of miniature video camera head assembly of the invention；
Fig. 4 is the structural schematic diagram of heat dissipation metal support plate of the invention；
Fig. 5 is miniature video camera head assembly of the invention, the perspective view of the explosion of shading shade assembly；
Fig. 6 is the structural schematic diagram of shading shade assembly of the invention；
Fig. 7 is the structural schematic diagram of shading outer cover of the invention；
Fig. 8 is the structural schematic diagram of shading inner cover of the invention；
Fig. 9 is the schematic cross-section of shading inner cover of the invention；
Figure 10 is the structural schematic diagram of supplementary lighting sources component of the invention；
Figure 11 is the structural schematic diagram of light source box of the invention；
Figure 12 is the circuit diagram of LED drive circuit of the invention.
Attached meaning marked in the figure is as follows:
1: miniature video camera head assembly；101: heat dissipation metal support plate；102: miniature webcam；103: recessed hole；2: supplementary lighting sources
Component；201: light source box；202: control circuit board；203:LED lamp bar；204: film layer；205: light source box dianegative；206:
Connecting column；207: side block tabula rasa；3: shading shade assembly；301: shading outer cover；302: shading inner cover；303: shield bars；304: miscellaneous
Light intercepts groove；305: fixed plate.
Specific embodiment
Below in conjunction with Figure of description, the present invention is further illustrated.
As shown in Figures 1 and 2, the image capturing system for textile defect detection of the invention, including be located to defect
Miniature video camera head assembly 1 right above point detection textile direction of transfer, the border of the miniature video camera head assembly 1 is provided with
The supplementary lighting sources component 2 being spaced apart, the miniature video camera head assembly 1 are connected to the reserved area at 2 middle part of supplementary lighting sources component
In, it is fixed with shading shade assembly 3 in 1 shooting direction of miniature video camera head assembly,
The shading shade assembly 3 is from the plane that reserved area extends downwardly out 2 place of supplementary lighting sources component, shading shade assembly 3
Extend supplementary lighting sources component 2 length in the plane be 0.5-1cm, this design guarantees shading shade assembly 3 and supplementary lighting sources
For both components 2 while working normally, shading shade assembly 3 can mask each light source box side in supplementary lighting sources component 2
Qiang Guang avoids influence of the strong light to miniature video camera head assembly 1, improves the effect of 1 captured image data of miniature video camera head assembly.
As shown in Figures 3 and 4, the miniature video camera head assembly 1 includes heat dissipation metal support plate 101 and miniature webcam
102, recessed hole 103 is provided in the heat dissipation metal support plate 101, is trapped in recessed hole 103 in the miniature webcam 102
Interior, the heat dissipation metal support plate 101 is in contact with supplementary lighting sources component 2, forms heat dissipation channel for miniature webcam 102,
Embedded setting miniature webcam 102, can increase the contact area of miniature webcam 102 Yu heat dissipation metal support plate 101, convenient
Miniature webcam 102 radiates, and guarantees its good reliable operation, temperature performance is good, further increases captured image data
Effect.
As shown in Fig. 5-Fig. 9, the shading shade assembly 3 includes shading outer cover 301 and shading inner cover 302, in the shading
Cover 302 is embedded in the inside of shading outer cover 301, and the shading outer cover 301 is fixed on the lower surface of heat dissipation metal support plate 101.
Preferably, the outer surface of the shading outer cover 301 is provided with heat insulating coat, and heat insulating coat can effectively prevent light filling light
Influence of the heat to miniature webcam 102 that source component 2 generates, the shading outer cover 301 are positive truncated rectangular pyramids shape, outside the shading
The big extreme direction face of cover 301 is underlying to defect detection textile, and the small end border of shading outer cover 301 is provided with fixation
Plate 305, the fixed plate 305 are installed to heat dissipation metal support plate 101 for shading shade assembly 3, and shading outer cover 301 is heat-insulated
While, the veiling glare that supplementary lighting sources component 2 can be stopped more more guarantees the foundation of shooting environmental, shading outer cover 301 equally with
Supplementary lighting sources component 2 is in contact, and forms heat dissipation channel.
The inner surface of the shading inner cover 302 is provided with light-absorbing coating, and by stack gradually from top to bottom several just
Truncated rectangular pyramids monomer is constituted, positioned at the positive truncated rectangular pyramids monomer underside shape in upper layer and the shape for being located at lower layer's positive truncated rectangular pyramids monomer upper surface
Shape is identical, and the inner wall of the shading inner cover 302 is provided with diagonally downward in the border for being located at each layer positive truncated rectangular pyramids monomer upper surface
Shield bars 303, form veiling glare between two adjacent shield bars 303 and intercept groove 304, to make the interior of shading inner cover 302
Wall forms multistage aperture diaphragm, and the tilt angle for the shield bars 303 that the present invention designs is between 90 ° -135 °, can be largely
Keep veiling glare in shield bars 303, as shown in fig. 6, veiling glare intercepts the sectional view of groove 304, internal groove presents downward
Certain angle (identical as the tilt angle of shield bars 303), and cooperate light-absorbing coating, guarantee all enter in shading inner cover 302
The veiling glare in portion can all be intercepted by the groove, and have very big probability to be absorbed by light-absorbing coating, if not if any small part veiling glare first time
It is predominantly absorbed, after birefringence, multistage aperture diaphragm still has very big probability to be absorbed by light-absorbing coating, miniature webcam 102
Useful reflected light in camera lens visual angle will directly enter in miniature webcam 102 from the small end of shading outer cover 301, not by shadow
It rings.Shading outer cover 301 can remove the stray light unrelated with being imaged, and stray light is avoided to reach the camera lens view of miniature webcam 102
Angle, while the veiling glare of multiple tracks intercepts groove 304 and constitutes matt structure, further removes stray light.
Preferably, the shading outer cover 301, the height of shading inner cover 302 are identical, and four sides of shading outer cover 301 stupefied are
Arc transition, good appearance, and avoid corner excessively sharp, scratch human body.
The supplementary lighting sources component 2 includes that successively end to end light source box 201 is constituted several groups, all groups of light source box
201 middle parts form the reserved area for installing miniature video camera head assembly 1 and shading shade assembly 3, as shown in Figure 10, supplementary lighting sources
Component 2 include four groups successively end to end light source box 201 constitute, formed in the middle part of four groups of light source box 201 for installing miniature take the photograph
As head assembly 1 and the reserved area of shading shade assembly 3, four groups of light source box 201 are convenient for assembled formation.As shown in figure 11, each light source
Box 201 includes control circuit board 202, LED light bar 203, film layer 204 and light source box dianegative 205, the control route
It is fixedly connected between plate 202, light source box dianegative 205 by being located at the connecting column 206 of quadrangle, the LED light bar 203 is more
It item and is arranged in parallel between control circuit board 202, light source box dianegative 205 in region at equal intervals, the film layer 204 is pasted
It is attached to the upper surface of light source box dianegative 205, side block tabula rasa 207, adjacent side block are provided between adjacent connecting column 206
There are gaps between tabula rasa 207, and convenient for the heat dissipation of entire light source box 201, control circuit board 202 is opened for controlling LED light bar 203
It opens or closes and light and shade；Film layer 204 is formed for stopping the soft light filling irradiated of the direct light of LED light bar 203
Diffused light source makes the near minimum from projecting of tested textile.
Preferably, the shooting direction of the direction of illumination Yu miniature webcam 102 of the LED light bar 203 is coaxial arrangement, is shone
It penetrates that direction is identical or approximate with shooting direction, the remaining number that will not be expressed from projection in shooting of tested textile can be made
In image, sampling effect is improved.
It is provided with LED drive circuit in the control circuit board 202, as shown in figure 12, the LED drive circuit includes crystalline substance
The base stage of body pipe Q1, transistor Q2 and metal-oxide-semiconductor Q3, the transistor Q1 pass through the external driving control signal of resistance R1, the crystalline substance
The base stage of body pipe Q1 also passes through resistance R2 and is connected to the ground, and the collector of the transistor Q1 passes through resistance R4 and control voltage
Vgd is connected, and the emitter of the transistor Q1 is connected to the ground, and the collector of the transistor Q1 also passes through resistance R5 and crystalline substance
The base stage of body pipe Q2 is connected, and the emitter of the transistor Q2 is connected with control voltage Vgd, the current collection of the transistor Q2
Pole is connected with the grid of one end of resistance R4, metal-oxide-semiconductor Q3 respectively, and the other end of the resistance R4 is connected to the ground, the MOS
The source electrode of pipe Q3 is connected with the anode of LED light bar 203, and the cathode of the LED light bar 203 is connected to the ground, the metal-oxide-semiconductor Q3
Drain electrode be connected with supply voltage Vd.The LED drive circuit can replace traditional illumination driving circuit and control circuit to make
With photoelectric coupler isolation, and switching tube is driven using grid-driving integrated circuit, traditional illumination driving circuit and control
Circuit circuit is more complex, and higher cost, failure rate is higher, and the working principle of the LED drive circuit is as follows:
Driving control signal input logic high level drives transistor Q1 to saturated mode, so that resistance R3 is generated voltage drop, under R3
End level drives transistor Q2 to saturated mode, and resistance R4 is made to generate voltage, and for driving metal-oxide-semiconductor Q3 grid, being allowed to conducting is
LED light bar 203 provides electric current, since in switch state, metal-oxide-semiconductor Q3 is source electrode output electricity for transistor Q1 and Q2 work in this circuit
Road, gain so this circuit will not generate amplification to the interference signal of input terminal parasitism, therefore need not use light less than 1
It is electrically isolated, for the gate driving circuit that transistor Q1 and Q2 are constituted using independently-powered, control voltage Vgd voltage is higher than Vd, is used for
Generate gate drive voltage, specific value be Vd be 15V, Vgd17V, driving control signal 3.3V is logic high, make LED
Driving circuit is opened, and LED light bar 203 lights, and entire circuit is simple, low in cost and low in energy consumption, is suitable for textile fault and is examined
The industrial environment of survey.
In conclusion the image capturing system for textile defect detection of the invention, effectively shielding veiling glare, by surveying
Examination can make signal-to-noise ratio improve 14dB, and miniature webcam assembly radiating effect is good, and the operation is stable degree is high, pass through supplementary lighting sources component
By minimizing from projection for tested textile, textile is remaining will not to express in digital picture from projection, know for image
Other technology provides more accurate reliable digital image data source, and recognition confidence is made to reach industrial scale applications standard, structure
The good sampling environment for building textile defect detection, is skillfully constructed, and structure novel has a good application prospect.
Basic principles and main features and advantage of the invention have been shown and described above.The technical staff of the industry should
Understand, the present invention is not limited to the above embodiments, and the above embodiments and description only describe originals of the invention
Reason, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes and improvements
It all fall within the protetion scope of the claimed invention.The claimed scope of the invention is by appended claims and its equivalent circle
It is fixed.
Claims (10)
1. a kind of image capturing system for textile defect detection, it is characterised in that: weave including being located to defect detection
Miniature video camera head assembly (1) right above product direction of transfer, the border of the miniature video camera head assembly (1) is provided with to be divided at equal intervals
The supplementary lighting sources component (2) of cloth, the miniature video camera head assembly (1) are connected to the reserved area in the middle part of supplementary lighting sources component (2)
In, it is fixed with shading shade assembly (3) in miniature video camera head assembly (1) shooting direction, the shading shade assembly (3) is from reserved
Region extends downwardly out in the plane where supplementary lighting sources component (2).
2. the image capturing system according to claim 1 for textile defect detection, it is characterised in that: described miniature
CCD camera assembly (1) includes heat dissipation metal support plate (101) and miniature webcam (102), the heat dissipation metal support plate (101)
On be provided with recessed hole (103), is trapped in the miniature webcam (102) in recessed hole (103), the heat dissipation metal support plate
(101) it is in contact with supplementary lighting sources component (2), forms heat dissipation channel for miniature webcam (102).
3. the image capturing system according to claim 2 for textile defect detection, it is characterised in that: the shading
Shade assembly (3) includes shading outer cover (301) and shading inner cover (302), and the shading inner cover (302) is embedded in shading outer cover
(301) inside, the shading outer cover (301) are fixed on the lower surface of heat dissipation metal support plate (101).
4. the image capturing system according to claim 3 for textile defect detection, it is characterised in that: the shading
The outer surface of outer cover (301) is provided with heat insulating coat, and the truncated rectangular pyramids shape that is positive, the big extreme direction of the shading outer cover (301)
Face is underlying to defect detection textile, and the small end border of the shading outer cover (301) is provided with fixed plate (305),
The fixed plate (305) is installed to heat dissipation metal support plate (101) for shading shade assembly (3),
The inner surface of the shading inner cover (302) is provided with light-absorbing coating, and by stack gradually from top to bottom several positive four
Terrace with edge monomer is constituted, positioned at the positive truncated rectangular pyramids monomer underside shape in upper layer and the shape for being located at lower layer's positive truncated rectangular pyramids monomer upper surface
Identical, the inner wall of the shading inner cover (302) is provided with diagonally downward in the border for being located at each layer positive truncated rectangular pyramids monomer upper surface
Shield bars (303), form veiling glare between two adjacent shield bars (303) and intercept groove (304), to make shading inner cover
(302) inner wall forms multistage aperture diaphragm.
5. the image capturing system according to claim 4 for textile defect detection, it is characterised in that: described light-blocking
The tilt angle of item (303) is between 90 ° -135 °.
6. the image capturing system according to claim 4 for textile defect detection, it is characterised in that: the shading
Outer cover (301), the height of shading inner cover (302) are identical, and four sides of shading outer cover (301) are stupefied for arc transition.
7. the image capturing system according to claim 1 for textile defect detection, it is characterised in that: the light filling
Light source assembly (2) includes that successively end to end light source box (201) is constituted several groups, is formed and is used in the middle part of song group light source box (201)
In installation miniature video camera head assembly (1) and shading shade assembly (3) reserved area,
Each light source box (201) includes control circuit board (202), LED light bar (203), film layer (204) and light source box clear bottom
Plate (205) passes through the connecting column (206) positioned at quadrangle between the control circuit board (202), light source box dianegative (205)
It is fixedly connected, the LED light bar (203) is a plurality of and is arranged in parallel in control circuit board (202), light source box clear bottom at equal intervals
Between plate (205) in region, the film layer (204) is attached to the upper surface of light source box dianegative (205), adjacent connection
Side block tabula rasa (207) are provided between column (206).
8. the image capturing system according to claim 7 for textile defect detection, it is characterised in that: the light filling
Light source assembly (2) include four groups successively end to end light source box (201) constitute, formed and used in the middle part of all groups of light source box (201)
In installation miniature video camera head assembly (1) and the reserved area of shading shade assembly (3).
9. the image capturing system according to claim 7 for textile defect detection, it is characterised in that: the LED
The direction of illumination of lamp bar (203) and the shooting direction of miniature webcam (102) are coaxial arrangement.
10. the image capturing system according to claim 7 for textile defect detection, it is characterised in that: the control
It is provided with LED drive circuit in wiring board (202) processed, the LED drive circuit includes transistor Q1, transistor Q2 and metal-oxide-semiconductor
The base stage of Q3, the transistor Q1 also pass through resistance by the external driving control signal of resistance R1, the base stage of the transistor Q1
R2 is connected to the ground, and the collector of the transistor Q1 is connected by resistance R4 with control voltage Vgd, the transistor Q1's
Emitter is connected to the ground, and the collector of the transistor Q1 also passes through resistance R5 and is connected with the base stage of transistor Q2, described
The emitter of transistor Q2 with control voltage Vgd be connected, the collector of the transistor Q2 respectively with one end of resistance R4,
The grid of metal-oxide-semiconductor Q3 is connected, and the other end of the resistance R4 is connected to the ground, the source electrode and LED light bar of the metal-oxide-semiconductor Q3
(203) anode is connected, and the cathode of the LED light bar (203) is connected to the ground, the drain electrode of the metal-oxide-semiconductor Q3 and power supply electricity
Pressure Vd is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811584599.2A CN109444156B (en) | 2018-12-24 | Image acquisition system for detecting defects of textiles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811584599.2A CN109444156B (en) | 2018-12-24 | Image acquisition system for detecting defects of textiles |
Publications (2)
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| CN109444156A true CN109444156A (en) | 2019-03-08 |
| CN109444156B CN109444156B (en) | 2024-07-30 |
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| CN112255174A (en) * | 2020-10-28 | 2021-01-22 | 江苏善果缘智能科技有限公司 | Co-frequency confocal LED illumination light source structure for detecting three-dimensional defects on surface of product |
| CN112268863A (en) * | 2020-10-13 | 2021-01-26 | 上海市计量测试技术研究院 | Illumination box for calibrating Ringelmann blackness instrument and calibration method |
| CN115032148A (en) * | 2022-06-06 | 2022-09-09 | 苏州天准科技股份有限公司 | Sheet edge surface detection method and regular detection temporary storage station |
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| CN115032148A (en) * | 2022-06-06 | 2022-09-09 | 苏州天准科技股份有限公司 | Sheet edge surface detection method and regular detection temporary storage station |
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