CN107894420A - A kind of lighting device of cable surface defect ONLINE RECOGNITION system - Google Patents
A kind of lighting device of cable surface defect ONLINE RECOGNITION system Download PDFInfo
- Publication number
- CN107894420A CN107894420A CN201710898515.1A CN201710898515A CN107894420A CN 107894420 A CN107894420 A CN 107894420A CN 201710898515 A CN201710898515 A CN 201710898515A CN 107894420 A CN107894420 A CN 107894420A
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- Prior art keywords
- light source
- cable
- central axis
- recognition system
- cable surface
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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
- G01N21/8806—Specially adapted optical and illumination features
-
- 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
- G01N21/8806—Specially adapted optical and illumination features
- G01N2021/8822—Dark field detection
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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 kind of lighting device of cable surface defect ONLINE RECOGNITION system, camera, cavity, cover plate and light source.Cavity each side has one piece of cover plate, and circular hole is provided with cover plate central and is imported and exported for cable, and cable moves at inlet and outlet central axis along central axis.Light source is placed on the inside of the two cover plates of left and right in the annular region of inlet and outlet, left and right sides light source is distributed in symmetry shape, multiple light sources are placed per side, light source is using central axis as center of circle cyclization distribution of shapes, light source projects light and central axis is angled, and irradiating angle is adjustable, uniform illumination is formed to tested cable surface to realize.The present invention is simple in construction, is easily achieved, 360 ° omni-directional illumination can be provided to the cable of the cylindrical shape of operation, strengthen target signature to be detected emphatically, weaken background and noise jamming, avoid introducing extra interference, providing high quality graphic for cable surface defect ONLINE RECOGNITION system gathers environment.
Description
Technical field
The present invention relates to a kind of lighting device of cable surface defect ONLINE RECOGNITION system, it is intended to is deposited for detection cable surface
Good lighting environment is provided in defect, belongs to lighting technical field.
Background technology
Cable surface defect success is identified key and is whether defect target is more clearly distinguished from the surface back of the body
Whether scape, i.e. defect protrude.If cable surface defect image has larger contrast, cable surface defect with ambient background
ONLINE RECOGNITION system quickly can accurately identify the defects of cable surface is present again.If on the contrary, cable surface defect image
There is no larger contrast, i.e. defect and background segment unobvious with ambient background, be submerged in surface background image, even if system
It is also difficult to come out defect and background segment with outstanding algorithm, and influence identifying system and perform speed, even result in defect not
Can be identified.
Therefore, in cable surface defect ONLINE RECOGNITION system, the image of high quality has weight for system identification defect
The meaning wanted, it is key link to select suitable lighting device, and it directly affects the mass effect of IMAQ, and decision systems are known
The accuracy and rapidity of other defect.Therefore, perfect lighting device goes out defect for system identification and had great importance.
The content of the invention
The technical problems to be solved by the invention are：A kind of illumination dress of cable surface defect ONLINE RECOGNITION system is provided
Put, illuminated and realized to the illumination of cable surface 360 ° omni-directional using multiple sets of light sources, obtained for image and defect recognition provides well
Lighting environment, detection efficiency can be greatly improved.
The present invention uses following technical scheme to solve above-mentioned technical problem：
A kind of lighting device of cable surface defect ONLINE RECOGNITION system, including cavity, four cameras, light source, cover plates；
The cavity is the cuboid being made up of four size identical rectangular slabs, and four size identical rectangular slabs are respectively
Forward and backward, upper and lower four faces of cuboid；Left and right two faces of cuboid are respectively size identical square cover plate, two
Square cover plate forms an enclosed construction with cuboid；Each rectangular slab is provided with a camera finding slit, for photograph
Machine is found a view from containment portion；The center of each square cover plate is provided with the cable inlet and outlet of circle, for cable along inlet and outlet
Mandrel line moves left and right；Multiple light sources are provided with the one side that each square cover plate contacts with cavity, and light source is uniformly distributed
In in the annular region using central axis as the center of circle, exist necessarily between inner ring and cable the inlet and outlet edge of the annular region
Distance, the light source on left and right two square cover plates are symmetric, and light source projects light can with central axis angulation
To adjust, light source is illuminated using direct light source lighting system to tested cable, and direct light source produces reflected light in cable surface, from
And echo area is formed, slit of finding a view is located at outside the echo area.
As a preferred embodiment of the present invention, when the tested cable is the cable of smooth surface, the inclined angle alpha of light source
Meet following condition with the angle of visual field β of camera：α>(β/2+γ/2)；The tested cable is the pattern line of surface irregularity
During cable, the inclined angle alpha of light source and the angle of visual field β of camera meet following condition：α>(β/2+γ/2+2θ)；Wherein, γ is convergence
The beam optic angle of lens or reflective lampshade, θ are that cable surface tilts the boundary line of decorative pattern maximum slope and the angle of central axis.
As a preferred embodiment of the present invention, the light source is LED light source, and is furnished with plus lens or reflective lamp
Cover, form direct light source lighting system.
As a preferred embodiment of the present invention, the LED light source is white light.
As a preferred embodiment of the present invention, blacking inside the enclosed construction.
The present invention compared with prior art, has following technique effect using above technical scheme：
1st, the present invention can provide 360 ° omni-directional illumination to the cable of the cylindrical shape of operation, strengthen mesh to be detected emphatically
Feature is marked, weakens the interference of background and noise, avoids introducing extra interference, so as to provide good collection environment, ensure that line
Cable surface defect quickly identifies online.
2nd, the present invention is simple in construction, is easily achieved, and providing high quality graphic for cable surface defect ONLINE RECOGNITION system adopts
Collect environment.
Brief description of the drawings
Fig. 1 is the lighting device front view of cable surface defect ONLINE RECOGNITION system of the present invention.
Fig. 2 is the lighting device side view of cable surface defect ONLINE RECOGNITION system of the present invention.
Fig. 3 is that light source places schematic diagram in lighting device of the present invention.
Fig. 4 is for decorative pattern cable surface reflection line angle excursion schematic diagram in lighting device of the present invention.
Reference in figure is construed to：1- cameras, 2- cavitys, 3- cover plates, 4- light sources, 5- cables, 6- central axis,
7- is imported and exported, 8- light sources rest area.
Embodiment
Embodiments of the present invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning
Same or similar element is represented to same or similar label eventually or there is the element of same or like function.Below by ginseng
The embodiment for examining accompanying drawing description is exemplary, is only used for explaining the present invention, and is not construed as limiting the claims.
As shown in Figure 1 and Figure 2, it is lighting device main view, the side view of cable surface defect ONLINE RECOGNITION system respectively.One
The lighting device of kind cable surface defect ONLINE RECOGNITION system, including camera 1, cavity 2, cover plate 3 and light source 4.Cavity 2 or so
Respectively there is one piece of cover plate 3 both sides, and cover plate 3 is provided with circular hole at center, and for cable inlet and outlet 7, cable 5 is positioned at inlet and outlet central axis 6
Place, and moved along central axis 6.Light source 4 is placed in the inner side of left and right sides cover plate 3 in the annular region 8 of inlet and outlet 7, such as Fig. 2
It is shown.Left and right sides light source 4 is distributed in symmetry shape, and multiple light sources 4 are placed per side, is that center of circle cyclization shape is equal with central axis 6
Even distribution, light source 4 projects light and central axis 6 is angled, and adjustable angle.
Light source 4 is LED white light sources, and light source 4 is furnished with plus lens or reflective lampshade, using direct light mode.
As shown in figure 3, light source forms obvious echo area using direct light source to tested cable illumination, cable smooth surface reflection light,
Camera 1 is placed in outside echo area, is avoided smooth cable surface reflection and is directly entered camera 1, forms dark background.When cable table
When there is defect in face, defect area produces diffusing reflection light, and part diffusing reflection light will be directed into camera 1, strengthen scarce
Region illuminance is fallen into, cable image is the bright defect image of dark background in camera 1, as dark domain imaging.To avoid external or chamber
Body reflected light is disturbed, and the inside of cavity 2 is black enclosed construction, only stays two inlet and outlet 7 to pass in and out mobile and four cameras for cable 5
Find a view slit.
As shown in figure 3, the inclination angle of light source 4 is α, the angle of visual field of camera 1 is β, plus lens (or reflective lampshade)
Beam optic angle be γ.Pin is in smooth surface cable, and to meet the dark domain imaging condition of camera 1, the tilt angle alpha of light source 4 need to expire
Sufficient α>(β/2+γ/2).
As shown in figure 4, for surface irregularity in the decorative pattern cable of thread groove, the border tangent line of screw thread maximum slope
It is θ with the angle of central axis 6, the reflection light of decorative pattern cable surface slope maximum position offset by 2 θ, to meet that camera 1 is dark
Domain imaging condition, the tilt angle alpha of light source 4 need to meet α>(β/2+γ/2+2θ).
The technological thought of above example only to illustrate the invention, it is impossible to protection scope of the present invention is limited with this, it is every
According to technological thought proposed by the present invention, any change done on the basis of technical scheme, the scope of the present invention is each fallen within
Within.
Claims (5)
- A kind of 1. lighting device of cable surface defect ONLINE RECOGNITION system, it is characterised in that including cavity, four cameras, Light source, cover plate；The cavity is the cuboid being made up of four size identical rectangular slabs, and four size identicals are rectangular Shape plate is respectively forward and backward, upper and lower four faces of cuboid；Left and right two faces of cuboid are respectively size identical square Cover plate, two square cover plates form an enclosed construction with cuboid；It is narrow that each rectangular slab is provided with a camera finding Seam, finds a view for camera from containment portion；The center of each square cover plate is provided with the cable inlet and outlet of circle, enters for cable edge The central axis of outlet moves left and right；Multiple light sources, and light source are provided with the one side that each square cover plate contacts with cavity It is uniformly distributed in using central axis in the annular region in the center of circle, to be deposited between inner ring and cable the inlet and outlet edge of the annular region Light source in a certain distance, left and right two square cover plates is symmetric, light source project light and central axis institute into Adjustable angle, light source is illuminated using direct light source lighting system to tested cable, and direct light source produces in cable surface Reflected light, so as to form echo area, slit of finding a view is located at outside the echo area.
- 2. the lighting device of cable surface defect ONLINE RECOGNITION system according to claim 1, it is characterised in that described tested When cable is the cable of smooth surface, the inclined angle alpha of light source and the angle of visual field β of camera meet following condition：α>(β/2+γ/ 2)；When the tested cable is the decorative pattern cable of surface irregularity, the inclined angle alpha of light source and the angle of visual field β of camera meet Following condition：α>(β/2+γ/2+2θ)；Wherein, γ is the beam optic angle of plus lens or reflective lampshade, and θ inclines for cable surface The boundary line of oblique decorative pattern maximum slope and the angle of central axis.
- 3. the lighting device of cable surface defect ONLINE RECOGNITION system according to claim 1, it is characterised in that the light source For LED light source, and it is furnished with plus lens or reflective lampshade, forms direct light source lighting system.
- 4. the lighting device of cable surface defect ONLINE RECOGNITION system according to claim 3, it is characterised in that the LED Light source is white light.
- 5. the lighting device of cable surface defect ONLINE RECOGNITION system according to claim 1, it is characterised in that the closing Inside configuration blacking.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710898515.1A CN107894420A (en) | 2017-09-28 | 2017-09-28 | A kind of lighting device of cable surface defect ONLINE RECOGNITION system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710898515.1A CN107894420A (en) | 2017-09-28 | 2017-09-28 | A kind of lighting device of cable surface defect ONLINE RECOGNITION system |
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| Publication Number | Publication Date |
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| CN107894420A true CN107894420A (en) | 2018-04-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710898515.1A Pending CN107894420A (en) | 2017-09-28 | 2017-09-28 | A kind of lighting device of cable surface defect ONLINE RECOGNITION system |
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| CN (1) | CN107894420A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110823901A (en) * | 2018-08-13 | 2020-02-21 | 科迈士瑞士股份有限公司 | Inspection device for inspecting a cable tip of a cable and method for cleaning |
| CN110823900A (en) * | 2018-08-13 | 2020-02-21 | 科迈士瑞士股份有限公司 | Inspection device for inspecting a cable tip of a cable and method for cleaning a mirror of an inspection device |
Citations (6)
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|---|---|---|---|---|
| JPH03206950A (en) * | 1990-01-09 | 1991-09-10 | Sumitomo Electric Ind Ltd | External defect detecting method on outer layer of cv cable |
| CN101213441A (en) * | 2004-07-16 | 2008-07-02 | 让-弗朗索瓦·法杜 | Surface analysis of an elongated object |
| CN103163150A (en) * | 2013-03-18 | 2013-06-19 | 长飞光纤光缆有限公司 | Online cable surface defect detection device and online cable surface defect detection method |
| CN105301002A (en) * | 2015-10-29 | 2016-02-03 | 南京邮电大学 | Online cable surface defect detection device |
| CN105372262A (en) * | 2015-12-17 | 2016-03-02 | 大连实远科技发展有限公司 | Outer surface defect inspection system for columnar object |
| CN106198557A (en) * | 2016-07-01 | 2016-12-07 | 江苏亨通光电股份有限公司 | A kind of nonmetal all dielectric air-blowing micro-cable cable surface detection device |
-
2017
- 2017-09-28 CN CN201710898515.1A patent/CN107894420A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03206950A (en) * | 1990-01-09 | 1991-09-10 | Sumitomo Electric Ind Ltd | External defect detecting method on outer layer of cv cable |
| CN101213441A (en) * | 2004-07-16 | 2008-07-02 | 让-弗朗索瓦·法杜 | Surface analysis of an elongated object |
| CN103163150A (en) * | 2013-03-18 | 2013-06-19 | 长飞光纤光缆有限公司 | Online cable surface defect detection device and online cable surface defect detection method |
| CN105301002A (en) * | 2015-10-29 | 2016-02-03 | 南京邮电大学 | Online cable surface defect detection device |
| CN105372262A (en) * | 2015-12-17 | 2016-03-02 | 大连实远科技发展有限公司 | Outer surface defect inspection system for columnar object |
| CN106198557A (en) * | 2016-07-01 | 2016-12-07 | 江苏亨通光电股份有限公司 | A kind of nonmetal all dielectric air-blowing micro-cable cable surface detection device |
Non-Patent Citations (1)
| Title |
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| 郭杰荣等编著: "《光电信息技术实验教程》", 30 September 2015, 西安电子科技大学出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110823901A (en) * | 2018-08-13 | 2020-02-21 | 科迈士瑞士股份有限公司 | Inspection device for inspecting a cable tip of a cable and method for cleaning |
| CN110823900A (en) * | 2018-08-13 | 2020-02-21 | 科迈士瑞士股份有限公司 | Inspection device for inspecting a cable tip of a cable and method for cleaning a mirror of an inspection device |
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Application publication date: 20180410 |