CN110057835A - A kind of detection device and detection method - Google Patents
A kind of detection device and detection method Download PDFInfo
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- CN110057835A CN110057835A CN201910457362.6A CN201910457362A CN110057835A CN 110057835 A CN110057835 A CN 110057835A CN 201910457362 A CN201910457362 A CN 201910457362A CN 110057835 A CN110057835 A CN 110057835A
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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
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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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- 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
- G01N2021/9583—Lenses
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- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
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- Pathology (AREA)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
Abstract
This application discloses a kind of detection device and detection methods.Device includes light occurrence of equipment and imaging device.Light occurrence of equipment includes candy strip, and for the equipment for emitting light beam and the candy strip being projected to the determinand by the light beam, candy strip includes multiple isolated vertical bars arranged in parallel；The light beam that imaging device is used to obtain determinand transmission or reflection forms detection image, and the detection image includes multiple stripeds；Detection image is used to obtain the defect information of the determinand according to the striped.If the processing of determinand surface is ideal to be not present defect, the detection image that imaging device obtains should show straight striped similar with candy strip.But if determinand surface existing defects, such as tangerine line, mould are scraped or impression etc., the striped in detection image can then be distorted.It can be realized the automatic detection to determinand surface defect using the detection device, compared to existing artificial detection method, detection efficiency is significantly improved.
Description
Technical field
This application involves defect detecting technique fields, more particularly to a kind of detection device and detection method.
Background technique
Glass material is widely applied in modern industry manufacture, such as makes mobile phone shell, lens, cell piece using glass material
With display screen etc..With the progress of processing technology, more and more glass products are designed to curved-surface structure, so that product
Function is better achieved or achievees the effect that more attractive.
Since the processing of glass curve needs more more complicated processes, inevitably generate in process of production each
The different defect of kind of various kinds feature, common open defect has scratch, sags and crests, mould to scrape, tangerine line, impression, chipping etc., influences to produce
The function of product is realized and aesthetic effect.It is common three kind defect on bend glass that tangerine line, impression and mould, which are scraped, what defect generated
The reason is that mold is not up to standard in glass bending technique or mold ginseng has impurity.With user product appearance is required it is continuous
It improves, defect existing for product mean camber glass also will affect the usage experience of user.
In actual production, can by inspector artificially under fluorescent light constantly overturning detection bend glass, this be by
In certain defects only under some certain viewing angles just it is observed that.But there is inefficiency in artificial detection.
Summary of the invention
Based on the above issues, this application provides a kind of detection device and detection methods, are lacked with realizing to determinand surface
Sunken automatic detection promotes detection efficiency.
The embodiment of the present application discloses following technical solution:
In a first aspect, the application provides a kind of detection device, comprising: light occurrence of equipment and imaging device；
The light occurrence of equipment includes candy strip, and the light occurrence of equipment passes through described for emitting light beam
The candy strip is projected to the determinand by light beam, and the candy strip includes multiple isolated vertical bars arranged in parallel；
The imaging device, for obtaining the light beam of the determinand transmission or reflection, formation detection image is described
Detection image includes multiple stripeds；The detection image is used to obtain the defect information of the determinand according to the striped.
Optionally, following at least one parameter of candy strip is adjusted in the light occurrence of equipment:
The distance of the middle line of the extending direction of the vertical bar, the width of the vertical bar or the two neighboring vertical bar.
Optionally, the imaging device includes: camera lens, for collecting the light beam of the determinand transmission；The camera lens and
The light occurrence of equipment is located at the determinand two sides；
Alternatively, the imaging device includes: camera lens, for collecting the light beam of the determinand reflection；The camera lens and institute
Stating light occurrence of equipment, to be located at the determinand ipsilateral.
Optionally, the focal plane of the camera lens is between the determinand and the candy strip；Alternatively, determinand pair
Candy strip at picture place face be image planes, the focal plane of the camera lens is between the determinand and the image planes.
Optionally, the light occurrence of equipment includes: the terminal device with display screen；The display screen is for showing packet
Picture containing the candy strip；
The terminal device is schemed after obtaining the corresponding editor of the edit operation in response to the edit operation to the picture
Piece；The edit operation comprises at least one of the following:
Rotation, amplification are reduced or are replaced；
The display screen is also used to show picture after the editor.
Optionally, the light occurrence of equipment includes: luminescent screen and pattern elements, and the pattern elements have the striped
Pattern；
The pattern elements include: light shielding part and multiple isolated vertical bars arranged in parallel, and the vertical bar is transmittance section；Institute
Stating luminescent screen includes: light-emitting component；The transmittance section directive that the light that the light-emitting component issues passes through the pattern elements
The determinand.
Optionally, the pattern elements are detachably connected with the luminescent screen；The number of the pattern elements be it is multiple, no
It is different with following at least one parameter of the pattern elements:
The distance of the middle line of the extending direction of the vertical bar, the width of the vertical bar or the two neighboring vertical bar.
Optionally, the light occurrence of equipment further include: light-guide device, the light issued for receiving the light-emitting component
And the light is made to be projected to the pattern elements.
Optionally, the light-emitting component is located at the light-guide device periphery, the arrangement of the light-emitting component and light-guide device
The orientation of direction vertical light-guide device and pattern elements.
Optionally, the orientation of the pattern elements and light-emitting component is perpendicular to plane where the candy strip.
Optionally, the light occurrence of equipment further include: lampshade；The lampshade be located at the pattern elements and it is described shine
Between element.
Optionally, the light-emitting component includes: multiple LED lamp beads.
Optionally, the light beam of the light occurrence of equipment transmitting is collimated light beam, and the light occurrence of equipment passes through described
The parallel stripe patterns are projected to the determinand by light beam.
Optionally, detection device further include: bogey；The bogey is for carrying the determinand；It is described to hold
Carry that set include: second conveyer and second conveyer；The biography of the second conveyer and the second conveyer
Send direction consistent；There is gap between the second conveyer and the second conveyer；The imaging device is specifically used
In obtaining the light beam for being located at the determinand transmission or reflection of the gap location, detection image is formed.
Optionally, the light occurrence of equipment and the imaging device are located at the two sides in the gap, the light beam
It is received later by imaging device for passing through determinand and the gap；Alternatively, the light occurrence of equipment and the imaging are set
Standby the same side for being located at the gap, the imaging device are used to receive the light beam of the gap location determinand reflection.
Optionally, the type of the defect is tangerine line, mould is scraped or impression.
Optionally, the width value of the vertical bar is in the section [1mm, 3mm]；The middle line of the two neighboring vertical bar
Apart from value in the section [2mm, 6mm].
Optionally, the determinand is with value at a distance from the light occurrence of equipment in the section [50mm, 150mm].
Second aspect, the application provide a kind of detection method, comprising:
The detection image of determinand is obtained using any detection device that first aspect provides；
The defect information of determinand is obtained according to the striped in the detection image.
Optionally, obtaining the defect information of determinand according to the striped in the detection image includes one or more of
Combination:
Whether it is distorted according to striped in the detection image, determines the presence or absence of described defect；
According to the size of spoking in the detection image, flaw size is obtained；
According to the position of spoking in the detection image, defective locations are obtained.
Compared to the prior art, the application has the advantages that
Detection device provided by the present application includes light occurrence of equipment and imaging device.Wherein, light occurrence of equipment includes
Candy strip, the light occurrence of equipment for emitting light beam, and by the light beam by the candy strip be projected to described in
Object is surveyed, candy strip includes multiple isolated vertical bars arranged in parallel；Imaging device is for obtaining determinand transmission or reflection
The light beam forms detection image, and the detection image includes multiple stripeds；Detection image is used to obtain institute according to the striped
State the defect information of determinand.If the processing of determinand surface is ideal, defect is not present, the detection image that imaging device obtains is answered
This shows straight striped similar with candy strip.But if determinand surface existing defects, such as tangerine line, mould scrape or
Impression etc., the striped in detection image can then be distorted.It can be realized using the detection device to determinand surface defect
Automatic detection, compared to existing artificial detection method, detection efficiency is significantly improved.
In the application, extending direction of the light occurrence of equipment by adjusting vertical bar, the width of the vertical bar or adjacent two
At least one of the distance of middle line of a vertical bar parameter, enables entire detection device for the recall rate of determinand defect
It is promoted, reduces the probability of false retrieval or missing inspection.
For the light occurrence of equipment comprising luminescent screen and pattern elements, the pattern elements have the candy strip,
And the pattern elements include: light shielding part and multiple isolated vertical bars arranged in parallel, and the vertical bar is transmittance section；The hair
Determinand described in the transmittance section directive of the light that the light-emitting component of tabula rasa issues by the pattern elements.Luminescent screen and figure
Candy strip is projected determinand to acquire by being implemented in combination with for case element, and the usage mode of the light occurrence of equipment is very just
Victory, and it is easy to operate while cheap.
When carrying out determinand defects detection as light occurrence of equipment using terminal device, terminal device can rapidly be rung
, can also be according to the preparatory automatic playing pictures of setting sequence of pictures using the operation at family, therefore can realize straight in candy strip
The quick adjusting of one or more parameters in the distance of the middle line of the extending direction of item, width or the two neighboring vertical bar,
It is convenient to operate, and the efficiency of detection correspondinglys increase, and promotes the usage experience of user.
In this application, the area to be measured for the pattern covering determinand that light occurrence of equipment is formed on the determinand surface,
So that single detection can obtain the area to be measured defect information as abundant as possible of determinand, to effectively improve to determinand
Defects detection efficiency.
Detailed description of the invention
In order to illustrate the technical solutions in the embodiments of the present application or in the prior art more clearly, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of application without any creative labor, may be used also for those of ordinary skill in the art
To obtain other drawings based on these drawings.
Fig. 1 is a kind of structural schematic diagram of detection device provided by the embodiments of the present application；
Fig. 2 is a kind of determinand transmission-type detection schematic diagram provided by the embodiments of the present application；
Fig. 3 is a kind of reflective detection schematic diagram of determinand provided by the embodiments of the present application；
Fig. 4 is the reflective detection schematic diagram of another determinand that the application and embodiment provide；
Fig. 5 a is the first candy strip schematic diagram provided by the embodiments of the present application；
Fig. 5 b is second of candy strip schematic diagram provided by the embodiments of the present application；
Fig. 5 c is the third candy strip schematic diagram provided by the embodiments of the present application；
Fig. 5 d is the 4th kind of candy strip schematic diagram provided by the embodiments of the present application；
Fig. 5 e is the 5th kind of candy strip schematic diagram provided by the embodiments of the present application；
Fig. 6 is the 6th kind of candy strip schematic diagram provided by the embodiments of the present application；
Fig. 7 is the 7th kind of candy strip schematic diagram provided by the embodiments of the present application；
Fig. 8 a provides a kind of transmission-type detection schematic diagram of a scenario for the embodiment of the present application；
Fig. 8 b provides a kind of reflective detection schematic diagram of a scenario for the embodiment of the present application；
Fig. 8 c is the reflective detection schematic diagram of a scenario of another kind provided by the embodiments of the present application；
Fig. 8 d provides another transmission-type for the embodiment of the present application and detects schematic diagram of a scenario；
Fig. 9 is the structural schematic diagram of the first light occurrence of equipment provided by the embodiments of the present application；
Figure 10 is the structural schematic diagram of second of light occurrence of equipment provided by the embodiments of the present application；
Figure 11 is the structural schematic diagram of the third light occurrence of equipment provided by the embodiments of the present application；
Figure 12 is the structural schematic diagram of another detection device provided by the embodiments of the present application；
Figure 13 is a kind of detection method flow chart provided by the embodiments of the present application.
Specific embodiment
It describes, exists at present by the method for inspector artificial detection determinand (such as bend glass) defect as discussed above
The problem of inefficiency.To solve this problem, inventor after study, provides a kind of detection device and detection method, for
The defect of determinand realizes the detection of automation.
In order to enable those skilled in the art to better understand the solution of the present invention, below in conjunction in the embodiment of the present invention
Attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is only this
Invention a part of the embodiment, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art exist
Every other embodiment obtained under the premise of creative work is not made, shall fall within the protection scope of the present invention.
Referring to Fig. 1, which is a kind of structural schematic diagram of detection device provided by the embodiments of the present application.
As shown in Figure 1, detection device provided by the embodiments of the present application, comprising: light occurrence of equipment and imaging device.
Wherein, light occurrence of equipment includes candy strip, and light occurrence of equipment passes through the light beam for emitting light beam
The candy strip is projected to the determinand.Candy strip includes multiple isolated vertical bars arranged in parallel.
In practical applications, determinand can be three-dimensional glass, for example, the mobile phone screen of glass material, mobile phone shell, lens,
Solar panel and display screen etc..The surface of determinand can be plane or curved surface.In the present embodiment, for the concrete type of determinand
Without limiting.
When candy strip is projected to the determinand by light beam by light occurrence of equipment, determinand can be transmitted light
Or reflection.Imaging device forms detection image for obtaining the light beam of the determinand transmission or reflection.If to be measured
Object transmits light beam, then detection image is specially transmission image；If determinand reflects light beam, detection image
Specially reflected image.
Referring to fig. 2 to Fig. 4, wherein Fig. 2 is a kind of determinand transmission-type detection schematic diagram provided by the embodiments of the present application；
Fig. 3 is a kind of reflective detection schematic diagram of determinand provided by the embodiments of the present application；It is another that Fig. 4 is that the application and embodiment provide
A kind of reflective detection schematic diagram of determinand.
As shown in Fig. 2, light beam is by be measured after candy strip is projected to determinand by light beam by light occurrence of equipment
Enter imaging device after object transmission.As shown in Figure 3 and Figure 4, when light occurrence of equipment by light beam by candy strip be projected to
After surveying object, light beam enters imaging device after determinand reflects.The difference of Fig. 3 and Fig. 4 is, in Fig. 3, light occurrence of equipment
Determinand surface is incident to the beam orthogonal of imaging device coaxial placement, the transmitting of light occurrence of equipment；In Fig. 4, light occurs
The surface of the light beam inclination directive determinand of equipment outgoing, imaging device and the non-coaxial placement of light occurrence of equipment, imaging device
Optical axis and determinand surface have acute angle.By Fig. 2 to Fig. 4 it is found that detection device provided in this embodiment is in reality
In, because the relative position of light occurrence of equipment and imaging device is not fixed uniquely, detection device both can be real to determinand
Existing transmission-type detection, and reflective detection may be implemented.
As an example, the imaging device of detection device can be camera in the present embodiment.
In the present embodiment, candy strip includes multiple isolated vertical bars arranged in parallel.Referring to Fig. 5 a, which is this Shen
Please embodiment provide the first candy strip schematic diagram, multiple vertical bars 501 i.e. constitute candy strip.It should be noted that this
Vertical bar in embodiment in candy strip refers to the bright vertical bar for the high brightness for having consistent or close.In fig 5 a, directly
The width of item 501 is d1, and the spacing of vertical bar 501 is D1.In the present embodiment, the spacing of vertical bar is the middle line of two neighboring vertical bar
Distance.
If the processing of determinand surface is ideal, be not present defect, the detection image that imaging device obtains should show with
The similar straight striped of candy strip.But if determinand surface existing defects, such as tangerine line, mould are scraped or impression etc., detection
Striped in image can then be distorted.As it can be seen that detection image is used to obtain the defect information of determinand.Utilize the detection device
It can be realized the automatic detection to determinand surface defect, compared to existing artificial detection method, detection efficiency is significantly improved.
In the present embodiment, as a kind of possible implementation, light occurrence of equipment may include: with display screen
Terminal device, such as the portable mobile terminals such as mobile phone and tablet computer.The display screen of the terminal device includes striped for showing
The picture of pattern.
As alternatively possible implementation, light occurrence of equipment may include: luminescent screen and pattern elements, the figure
Case element has the candy strip.Pattern elements include: light shielding part and multiple isolated vertical bars arranged in parallel, and vertical bar is specific
For transmittance section.Obvious pattern elements provide the candy strip of light occurrence of equipment.In specific implementation, transmittance section, which can be, engraves
Empty, it is also possible to be made of transparent material.Luminescent screen includes: light-emitting component；The light that the light-emitting component issues passes through
Determinand described in the transmittance section directive of the pattern elements.Luminescent screen and being implemented in combination with for pattern elements throw candy strip
Determinand is mapped to acquire, the usage mode of the light occurrence of equipment is very convenient, and easy to operate, while cheap.
In practical applications, detection device is possible to face a variety of various sizes of defects of detection or different extending directions
Defect demand.Therefore, if same candy strip is projected to different determinands by light beam by light occurrence of equipment, inspection
It surveys effect and is possible to undesirable.Based on this problem, in detection device provided by the embodiments of the present application, candy strip is adjustable.
It is described in detail and illustrates with reference to the accompanying drawing.
In the present embodiment, following at least one parameter of candy strip is adjusted in light occurrence of equipment:
The distance of the middle line of the extending direction of vertical bar, the width of vertical bar or two neighboring vertical bar.
By Fig. 5 a it is found that the space D 1 of vertical bar 501 is greater than width d1.Therefore, in the candy strip of Fig. 5 a signal, often
There is also the filaments of sun 502 that brightness is lower than vertical bar 501 between two adjacent vertical bars 501, the filaments of sun 502 are also straight, the filaments of sun 502
Extending direction it is consistent with the extending direction of vertical bar 201.In the candy strip of Fig. 5 a signal, the space D 1 of vertical bar 501 is equal to
The width d1 of the vertical bar and width d2 of the filaments of sun 502.
It continues with and provides the candy strip of various exemplary in conjunction with attached drawing.
Referring to Fig. 5 b and 5c, second respectively provided by the embodiments of the present application and the third candy strip schematic diagram.Figure
The extending direction of vertical bar 503 in candy strip shown in 5b, in candy strip shown in Fig. 5 c vertical bar 504 extending direction with
The extending direction of vertical bar 501 is different in candy strip shown in Fig. 5 a.Front once referred to, the extending direction of vertical bar be it is adjustable,
Therefore by taking Fig. 5 a, Fig. 5 b and Fig. 5 c as an example, the extending direction of the vertical bar of candy strip can be as shown in vertical bar 501, through overregulating
Become as shown in vertical bar 503 or as shown in vertical bar 504.
It should be noted that Fig. 5 a, Fig. 5 b and Fig. 5 c only illustrate three kinds of possible vertical bar extending directions, in practical application
In, the extending direction of vertical bar is without limiting in the candy strip that light occurrence of equipment includes.
Referring to Fig. 5 d and 5e, 4th kind respectively provided by the embodiments of the present application and the 5th kind of candy strip schematic diagram.Figure
In candy strip shown in 5d, vertical bar 505 changes compared to vertical bar 501 in candy strip shown in Fig. 5 a, spacing and width.
By comparison chart 5a and Fig. 5 d it is found that the width d1 of vertical bar 501 is greater than the width d3 of vertical bar 505；The space D 1 of vertical bar 501 is greater than
The space D 2 of vertical bar 505.In candy strip shown in Fig. 5 e, vertical bar 506 compared to vertical bar 501 in candy strip shown in Fig. 5 a,
Away from changing.By comparison chart 5a and Fig. 5 e it is found that the space D 1 of vertical bar 501 is less than the space D 3 of vertical bar 506.Front once mentioned
And the width of vertical bar is adjustable, therefore by taking Fig. 5 a and Fig. 5 d as an example, the width of the vertical bar of candy strip can be such as vertical bar 501
Shown width d1, being overregulated becomes the width d3 as shown in vertical bar 505.In addition, front once refers to, the spacing of vertical bar is adjustable
, therefore by taking Fig. 5 a, Fig. 5 d and Fig. 5 e as an example, spacing space D 1 as shown in vertical bar 501 of the vertical bar of candy strip is passed through
Adjusting becomes space D 2 or the space D 3 as shown in vertical bar 506 as shown in vertical bar 505.
It should be noted that Fig. 5 a and Fig. 5 d only illustrate two kinds of possible vertical bar width, in practical applications, to striped
The width size of vertical bar is without limiting in pattern.In addition, it is necessary to explanation, Fig. 5 a, Fig. 5 d and Fig. 5 e only illustrate three kinds
Possible vertical bar spacing, in practical applications, the distance of the middle line of two neighboring vertical bar is without limiting in candy strip.
It is understood that the range of tangerine line existing for determinand surface is different, such as determinand X in actually detected
Surface existing for tangerine line range be 0.5cm × 0.5cm, and the range of tangerine line existing for the surface of determinand Y be 0.3cm ×
0.3cm.When light occurrence of equipment will there is the candy strip of a certain vertical bar width to be transmitted through determinand by transmitting light beam,
Imaging device can effectively detect tangerine line existing for the surface of determinand X, but since the surface determinand Y tangerine line range is opposite
It is smaller, it is likely difficult to effectively detect tangerine line using same candy strip.Detection device provided by the embodiments of the present application, light hair
The candy strip that generating apparatus includes, the width that vertical bar in candy strip is adjusted in light occurrence of equipment therefore can be to be measured
It when object Y is detected, is detected using another lesser candy strip of vertical bar width, to realize to the surface determinand Y
Effective detection of upper tangerine line.Similarly, details are not described herein again for adjusting reason about vertical bar spacing.
In addition, scrape defect for mould, if the mould on determinand Z scrapes extending direction and a certain candy strip its vertical bar
Extending direction is identical, at this point, being difficult to observe depanning on transmission or reflection image scrapes the distortion of striped caused by defect, to be easy mistake
Inspection or missing inspection.By the way that the vertical bar of candy strip is adjusted to other extending directions in the present embodiment, such as it is adjusted to straight with original
The extending direction of item is vertical, and the recall rate for scraping mould is promoted, and reduces the probability of false retrieval or missing inspection.
As it can be seen that due in the application the extending direction of the vertical bar of candy strip, spacing or width be adjustable, thus the inspection
It surveys device and is capable of the defect (such as tangerine line, mould are scraped or impression) of different range size to determinand or different extending directions and carry out
Detection.Therefore, applicability and practicability of the detection device in the industrial production and quality check process of determinand are very strong.Defect
It is not necessarily to integral replacing light occurrence of equipment when detection, has saved the testing cost to determinand.
It should be noted that for the length of vertical bar each in candy strip without limiting in the present embodiment.Referring to Fig. 6 and
Fig. 7,6th kind respectively provided by the embodiments of the present application and the 7th kind of candy strip schematic diagram.It is by Fig. 6 and Fig. 7 it is found that each
Vertical bar length can be inconsistent.In addition, for the shape of candy strip without limiting in the present embodiment, in conjunction with Fig. 5 a, Fig. 6 and
Fig. 7 is it is found that vertical bar can be distributed in the candy strip of various shapes.
Detection device provided by the embodiments of the present application is when carrying out transmission-type detection and reflective detection for ease of understanding, light
Line occurrence of equipment and imaging device are described respectively with the relative positional relationship of determinand below with reference to Fig. 8 a to Fig. 8 c.
As a specific implementation, imaging device includes camera lens, photo-electric conversion element, circuit board and display screen.It is incident
Photo-electric conversion element is arrived to the light of imaging device from camera lens, photo-electric conversion element converts optical signals to electric signal, then
Electric signal passes through the processing of circuit board, and analog electrical signal is converted to digital electric signal, is then presented on imaging in the form of images
On the display screen of equipment.
Scene is detected for transmission-type shown in Fig. 8 a and Fig. 8 d, camera lens is specifically used for collecting the light of the determinand transmission
Beam；The camera lens and the light occurrence of equipment are located at the determinand two sides.Imaging device is specifically used for forming transmission
Image.
As it can be seen that in the embodiment of the present application, by adjusting the position of camera lens and light occurrence of equipment relative to determinand, making
Obtaining the detection device can be applied to transmission-type detection scene.For reflective detection scene, camera lens shown in Fig. 8 b and Fig. 8 c
Specifically for collecting the light beam of the determinand reflection；It is same that the camera lens and the light occurrence of equipment are located at the determinand
Side.Imaging device, specifically for forming reflected image.
As it can be seen that in the embodiment of the present application, by adjusting the position of camera lens and light occurrence of equipment relative to determinand, making
Obtaining the detection device can also apply to reflective detection scene.
In Fig. 8 a to Fig. 8 c, the focal plane of camera lens is as shown in dotted line.By Fig. 8 a it is found that the scene detected in transmission-type
Under, the focal plane of camera lens is between determinand and light occurrence of equipment；Under transmission-type and reflective detection scene, camera lens
Focal plane is between determinand and light occurrence of equipment.In addition, by determinand to candy strip at be known as picture as place face
The focal plane of camera lens can be adjusted between determinand and the image planes by face.As shown in figure 8d, image planes are by double dot dash line table
Show, dotted line indicates the focal plane of camera lens, which is adjusted between determinand and image planes to obtain by the focal plane of camera lens
Obtain the detection image of clear-cut texture.
In the present embodiment, the focal plane of camera lens is adjusted between light occurrence of equipment and determinand, that is, by burnt
Plane regulating is between candy strip and determinand.Its reason is；If focal plane is adjusted to determinand surface, although energy
It is enough that blur-free imaging is carried out to determinand, but since the defocus of candy strip is spent greatly, cause candy strip very fuzzy, thus difficult
To recognize the distortion of vertical bar generation；And if focal plane to be adjusted to the candy strip of light occurrence of equipment, although can be to light
The light of line occurrence of equipment outgoing is imaged, it can be difficult to capturing determinand tangerine line from the image finally obtained, mould is scraped
Or influence of the defects of impression to striped in image.By being arranged the focal plane of camera lens between candy strip and determinand,
Clearly reflected image or transmission image can be effectively obtained, to realize the efficient and comprehensive detection to determinand defect.
In addition, also the focal plane of camera lens can be adjusted between determinand and image planes.Herein, image planes specifically refer to determinand
To candy strip at as place plane.
As a kind of possible implementation, in the present embodiment, light occurrence of equipment is formed on the determinand surface
Pattern covering determinand area to be measured.It is acquired without carrying out multiple detection image to same determinand, it can be real
Now to the complete detection of area's all defect to be measured of determinand.Improve defects detection efficiency.
If the light beam of light occurrence of equipment transmitting is collimated light beam, the light occurrence of equipment passes through the light beam for institute
It states parallel stripe patterns and is projected to the determinand.Therefore, the size of the candy strip in light occurrence of equipment and be projected to
The size for the pattern for surveying object surface is consistent.Under the implementation, when known to the size of vertical bar each in candy strip, then
Convenient for determined according to detection image determinand defect size.It is understood that if the surface of determinand is plane, light
Candy strip in line occurrence of equipment is identical as the pattern for being projected to determinand surface, and if the surface of determinand be curved surface,
The pattern on determinand surface is projected to relative to the candy strip in light occurrence of equipment there may be distortion in a way,
Such as fringe spacing narrows.It should be noted that because the distortion of striped in detection image caused by surface curvature is compared to table
Face because tangerine line, mould scrape or the defects of impression caused by detection image striped distortion, related range is bigger.Therefore, exist
It can be the distortion as caused by which kind of reason according to the determination of the existence range of spoking in practical application.
In addition, it is necessary to which explanation, collimated light beam described herein are not limited to hair that is absolute parallel, and referring to light beam
Scattered angle is smaller.For example, beam divergence angle threshold alpha can be set in the present embodiment, when the angle of divergence of light beam is less than α, light beam is regarded
For collimated light beam.
Front once referred to, in detection device provided by the embodiments of the present application, light occurrence of equipment can emit light beam, and lead to
It crosses the light beam and the candy strip is projected to the determinand, and vertical bar in candy strip is adjusted in light occurrence of equipment
Extending direction, width or the two neighboring vertical bar middle line distance in one or more parameters.Light is provided below
Two kinds of implementations of occurrence of equipment.
In the present embodiment, as a kind of possible implementation, light occurrence of equipment may include: with display screen
Terminal device, such as the portable mobile terminals such as mobile phone and tablet computer.The display screen of the terminal device includes striped for showing
The picture of pattern.Terminal device is able to respond the edit operation in user to picture, to obtain the corresponding editor of edit operation
Picture afterwards.In the present embodiment, edit operation can be one of operation such as rotation, amplification, diminution or replacement or a variety of.Eventually
The display screen of end equipment shows picture after editor.For example, if edit operation is amplification, the candy strip in original picture
It will amplify, the vertical bar spacing and width of candy strip will increase.For example, if edit operation is to rotate, in original picture
The extending direction of candy strip vertical bar will rotate change.For example, if edit operation is replacement, the candy strip in original picture
It will be replaced, the smaller picture of fringe spacing can be substituted for.In this implementation, terminal device passes through the volume of response user
Operation is collected, screen is placed towards determinand, and light occurrence of equipment can be to provide the candy strip projection of vertical bar Parameter adjustable
Light beam.
In practical applications, it can also be stored in advance on the terminal device for different range, different type, different extension sides
To the applicable picture of defect.When determination needs to carry out the detection of number of drawbacks to a certain determinand, by successively replacing figure
Piece realizes the comprehensive detection to determinand, reduces the occurrence probability of missing inspection accident, promotes the reliability and convenience of detection.
When determination needs to detect a certain defect of a certain determinand, the picture of adaptation is transferred from pre-stored picture
It is replaced, realizes the detection to particular test defect.
It is understood that carrying out determinand defects detection as light occurrence of equipment using above-described terminal device
When, terminal device can quickly respond the operation of user, can also according to the preparatory automatic playing pictures of setting sequence of pictures,
Therefore it can realize one in the distance of the middle line of the extending direction of vertical bar in candy strip, width or the two neighboring vertical bar
The quick adjusting of kind or many kinds of parameters, it is convenient to operate, and the efficiency of detection correspondinglys increase, and promotes the usage experience of user.
Light occurrence of equipment may include: luminescent screen and multiple dismountable pattern elements, and pattern elements and luminescent screen can
Dismantling connection.Each pattern elements include: light shielding part and multiple isolated vertical bars arranged in parallel, and vertical bar is specially transmittance section.
In specific implementation, transmittance section can be hollow out, be also possible to be made of transparent material.
Different pattern element, the middle line of the extending direction of vertical bar (i.e. transmittance section), width or two neighboring vertical bar
One or more parameters are different in distance.For example, the front view of pattern elements S1 is as shown in Figure 5 a, the front view of pattern elements S2
As shown in Figure 5 b, the front view of pattern elements S3 is as depicted in fig. 5e.Pattern elements can be the form of pattern plate.
Possible as the first in this implementation, luminescent screen includes light-emitting component and backboard, and back plate support shines first
Part.Referring to Fig. 9, which is the structural schematic diagram of the first light occurrence of equipment provided by the embodiments of the present application.As shown in figure 9,
The connection of the backboard of one pattern elements and luminescent screen.Light-emitting component is the form of face type light-emitting component in Fig. 9, and light-emitting component issues
Light by being installed on the transmittance section directive determinands of the pattern elements of the luminescent screen, and a part of light then by
Light shielding part blocks.
Possible as second in this implementation, light-emitting component can be along the multiple of transmittance section extending direction arrangement
LED lamp bead.Referring to Figure 10, which is the structural schematic diagram of second of light occurrence of equipment provided by the embodiments of the present application.
X-axis, y-axis and z-axis collectively form three-dimensional rectangular coordinate system in Fig. 9 and Figure 10, two in x-axis, y-axis and z-axis three
It is mutually perpendicular between two.In conjunction with Fig. 9 and Figure 10 it is found that pattern elements and light-emitting component are along the direction identical or opposite with z-axis
It arranges, the plane that the plane in pattern elements where candy strip is collectively formed with x-axis and y-axis is parallel to each other.Since z-axis is vertical
In the plane that x-axis and y-axis collectively form, therefore in the embodiment of the present application, the orientation of pattern elements and light-emitting component can
Perpendicular to the plane where candy strip.It should be noted that when detection device is applied in reflective detection scene, and light
When line occurrence of equipment and imaging device coaxial placement, it is desirable that the material of the backboard of light occurrence of equipment is light transmission material in the present embodiment
Material.
As the third possibility in this implementation, light occurrence of equipment can also include: light-guide device.Light-guide device
For receiving the light of the light-emitting component sending and the light being made to be projected to pattern elements.For guide-lighting member in the present embodiment
The relative position of part and light-emitting component is without limiting.Optionally, referring to Figure 11, which is third provided by the embodiments of the present application
The structural schematic diagram of light occurrence of equipment is planted, x-axis, y-axis and z-axis collectively form three-dimensional rectangular coordinate system, x-axis, y-axis in Figure 11
It is mutually perpendicular between any two in z-axis three.In this implementation, light-guide device is between backboard and pattern elements, hair
The periphery of light-guide device is arranged in optical element (such as LED lamp bead).As shown in figure 11, light-guide device and pattern elements along with z
The identical or opposite direction arrangement of axis, light-emitting component is arranged with light-guide device along the identical or opposite direction of x-axis, because of x-axis and z
Axis is mutually perpendicular to, therefore the orientation of light-emitting component and light-guide device is perpendicular to the arrangement side of light-guide device and pattern elements
To.Light-guide device receives light-emitting component, that is, LED lamp bead transmitting light, and by the transmittance section of light guiding pattern elements, thus
It is emitted light integrally from light occurrence of equipment.
In order to which the light for being emitted light occurrence of equipment is more uniform, optionally, the also settable lampshade of light occurrence of equipment.
May be in implementation for above-mentioned the first and second, lampshade can be set in light-emitting component (such as LED lamp bead or face type
Light-emitting component) and pattern elements between；For in the third above-mentioned possible implementation, lampshade be can be set in light-guide device
Between pattern elements.The light being emitted from lampshade is more uniform, so that the beam brightness of light occurrence of equipment projection is more equal
It is even, it is more nearly, defect is determined according to transmission or reflection image convenient for imaging device.
Tangerine line is small by a series of slope gradients of glass surface and highly low fluctuating is constituted, and is typically in the range of greater than 0.5cm*
0.5cm.Mould scrapes usually width, and in 50um, length is greater than the mold scratch of 100um, also has that slope gradient is small and height is low
Feature.Impression is determinand during hot bending, since hot bending die Internal periphery is undesirable, for example to inner process, is led
The trace of 50-100um depth is left after pyrogenicity is curved on the test object, the usual depth of impression all than shallower, scrape with mould similar by size.Have
The size range with impression is scraped in view of tangerine line, mould, as a kind of optional implementation, detection device provided in this embodiment is having
Body is in application, determinand can be arranged in the section [50mm, 150mm] at a distance from light occurrence of equipment.As an example,
Determinand can be arranged at distance light occurrence of equipment 100mm.In addition, the width value of vertical bar exists in candy strip
In the section [1mm, 3mm], as an example, the width that vertical bar can be set is 2mm.In addition, the middle line of two neighboring vertical bar
Apart from value in the section [2mm, 6mm], as an example, when the width of setting vertical bar is 2mm, two neighboring vertical bar is set
The distance of middle line is 4mm.
In the present embodiment, detection device can also further comprise: bogey, for carrying determinand, improve to be measured
The convenience of analyte detection.
The form of bogey can there are many kinds of.For example, it may be center has the square frame-shaped bracket of hollowed out area, need
When being detected, determinand need to be only placed on bracket, and the length of the hollowed out area of bracket is less than determinand length, and/or
The width of hollowed out area is less than determinand width.
Bogey can also be the device with transmission and bearing function.Specifically, bogey may include: first
Transmission device and second conveyer.Second conveyer for carrying the side of determinand when detecting；Second conveyer
For carrying the other side of determinand when detecting.
Referring to Figure 12, which is the structural schematic diagram of another detection device provided by the embodiments of the present application.Such as Figure 12 institute
Show, detection device includes: light occurrence of equipment, imaging device, second conveyer and second conveyer.
Second conveyer and second conveyer are that upper surface is in contact with determinand.In Figure 12, the first transmission dress
The upper surface set is consistent with the direction of transfer of the upper surface of second conveyer, is to transmit to the right.For second conveyer
And second conveyer, the transmission starting point of its upper surface is known as first end, the transmission end of upper surface is known as second end.
As can be seen from FIG. 12, the first end of the second end of second conveyer and second conveyer carries the determinand jointly.
The second end of second conveyer and the first end of second conveyer not fit closely, i.e. second conveyer
There is gap between second conveyer, determinand is located at gap location when detection.Scene, imaging device are detected for transmission-type
It should be located at the two sides in gap with light occurrence of equipment, such as two sides up and down, while guarantee the camera lens of imaging device as far as possible
Optical axis above-mentioned gap is passed through by the light that above-mentioned gap and light occurrence of equipment issue as far as possible.To avoid light from sending out
The light transmission device that generating apparatus issues stops, and smoothly reaches determinand surface.Imaging device is specifically used for obtaining positioned at described
The light beam of the determinand transmission or reflection of gap location forms detection image.The transmission-type detecting field shown in Figure 12
Jing Zhong, the light beam are used to be received after determinand and the gap by imaging device.
Figure 12 is only using transmission-type detection scene as example, in practical applications, for reflective detection scene, the first transmission
Device and second conveyer are similar to Figure 12 for the bearing mode of determinand, and details are not described herein again.In reflective detecting field
Jing Zhong, light occurrence of equipment and imaging device are located at the same side in gap, for example, be respectively positioned on the upside in gap, or between being respectively positioned on
The downside of gap.At this point, the imaging device is used to receive the light beam of the gap location determinand reflection.
There is gap between second conveyer and second conveyer.For reflective detection scene, imaging device with
Light occurrence of equipment should be respectively positioned on the upside in gap, while guarantee that the optical axis of the camera lens of imaging device passes through above-mentioned as far as possible
Gap.Optionally, imaging device and light occurrence of equipment may be disposed at the surface in gap.To avoid the transmission of carrying determinand
Interference of the conveyer belt of device to testing result.
It should be noted that in practical applications, the extending direction of vertical bar can be consistent with direction of transfer in candy strip,
It can also there are not 0 deg angles with direction of transfer.For example, the extending direction of vertical bar can with direction of transfer there are 45 °, 90 ° or
135 ° of angles etc..It using the candy strip of a variety of vertical bar extending directions, can aid in transmission image or reflected image, open up
Reveal the defect of different extending directions.
For example, if the extending direction of vertical bar is consistent with direction of transfer, at the same the extending direction scraped of mould also with direction of transfer
Unanimously, then it is likely difficult to observe that striped distorts in transmission image or reflected image.And if using the extension side of vertical bar again
It is mutually perpendicular to direction of transfer, even if the extending direction that then mould is scraped is consistent with direction of transfer, but transmission image or reflectogram
Still it can be observed that striped distortion as in.
Based on the detection device that previous embodiment provides, correspondingly, the application also provides a kind of detection method.Below with reference to
Detection method is described in attached drawing.
Referring to Figure 13, which is a kind of flow chart of detection method provided by the embodiments of the present application.
As shown in figure 13, detection method provided by the embodiments of the present application, comprising:
Step 1301: the detection image of determinand is obtained using detection device.
It has been described in detail and has illustrated in aforementioned device embodiment about the associated description of structure of the detecting device and function,
Therefore it is no longer repeated herein.
Step 1302: the defect information of determinand is obtained according to the striped in the detection image.
This step has a variety of ways of realization.
Since in detection device, light occurrence of equipment can emit light beam, and candy strip is projected to institute by light beam
State determinand；Imaging device obtains the light beam of the determinand transmission or reflection, forms detection image.It should be clear that bar graph
It include multiple isolated vertical bars arranged in parallel in case.It include multiple stripeds in detection image.If determinand surface is not present
Defect, detection image should show straight striped similar with candy strip.But if determinand surface existing defects
(such as tangerine line, mould are scraped or impression), striped can then be distorted in detection image.Therefore, this step can be according to the detection
Whether striped is distorted in image, determines the presence or absence of described defect.
Further, it is also possible to obtain defective locations according to the position of spoking in detection image.Below by example introduction
A kind of implementation obtaining defective locations.It in practical applications, can be by the way that calibration point, or calibration be arranged on the test object
The mode of the placement location of determinand determines the corresponding relationship of pixel in determinand surface each position point and detection image.Root
According to the position pixel and above-mentioned corresponding relationship on the image of spoking in detection image, that is, it can determine determinand table
The position of face existing defects.
It can be realized and tangerine line, the mould on determinand surface scraped or impression defect using the detection method that the detection device executes
Automatic detection, compared to existing artificial detection method, the detection efficiency of this method is significantly improved.
Optionally, in addition, in the application the extending direction of the vertical bar of candy strip, spacing or two neighboring vertical bar middle line
Distance be adjustable, thus the detection device be capable of the defect of different range size to determinand or different extending directions into
Row detection.As it can be seen that using applicability of the detection method of the detection device in the industrial production and quality check process of determinand and
Practicability is very strong.It is not necessarily to integral replacing light occurrence of equipment when defects detection, has saved the testing cost to determinand.
Optionally, in practical applications, if striped is distorted in detection image, detection side provided in this embodiment
Method can also further determine the quantity of the defect according to the detection image.
Therefore, flaw size can also be obtained according to the size of spoking in detection image in this step.Herein, it lacks
Sunken size can refer to the size of individual defect, such as the length and width that mould is scraped.In addition, the size of defect can also refer to
The size for the defect that a series of and height low fluctuating small by slope gradients is constituted, for example, tangerine line range length and width.
It should be noted that all the embodiments in this specification are described in a progressive manner, each embodiment it
Between same and similar part may refer to each other, each embodiment focuses on the differences from other embodiments.
Equipment and system embodiment described above is only schematical, wherein as illustrated by the separation member unit can be or
Person, which may not be, to be physically separated, and the component as unit prompt may or may not be physical unit
With in one place, or may be distributed over multiple network units.Portion therein can be selected according to the actual needs
Point or whole module achieve the purpose of the solution of this embodiment.Those of ordinary skill in the art are not making the creative labor
In the case of, it can it understands and implements.
The above, only a kind of specific embodiment of the application, but the protection scope of the application is not limited thereto,
Within the technical scope of the present application, any changes or substitutions that can be easily thought of by anyone skilled in the art,
Should all it cover within the scope of protection of this application.Therefore, the protection scope of the application should be with scope of protection of the claims
Subject to.
Claims (20)
1. a kind of detection device characterized by comprising light occurrence of equipment and imaging device；
The light occurrence of equipment includes candy strip, and the light occurrence of equipment passes through the light beam for emitting light beam
The candy strip is projected to the determinand, the candy strip includes multiple isolated vertical bars arranged in parallel；
The imaging device forms detection image, the detection for obtaining the light beam of the determinand transmission or reflection
Image includes multiple stripeds；The detection image is used to obtain the defect information of the determinand according to the striped.
2. detection device according to claim 1, which is characterized in that candy strip is adjusted in the light occurrence of equipment
Following at least one parameter:
The distance of the middle line of the extending direction of the vertical bar, the width of the vertical bar or the two neighboring vertical bar.
3. detection device according to claim 1, which is characterized in that the imaging device includes: camera lens, for collecting
State the light beam of determinand transmission；The camera lens and the light occurrence of equipment are located at the determinand two sides；
Alternatively, the imaging device includes: camera lens, for collecting the light beam of the determinand reflection；The camera lens and the light
It is ipsilateral that line occurrence of equipment is located at the determinand.
4. detection device according to claim 3, which is characterized in that the focal plane of the camera lens be located at the determinand with
Between the candy strip；Alternatively, determinand to candy strip at picture place face be image planes, the focal plane of the camera lens is located at
Between the determinand and the image planes.
5. detection device according to claim 1 or 2, which is characterized in that the light occurrence of equipment includes: to have display
The terminal device of screen；The display screen is for showing the picture comprising the candy strip；
The terminal device obtains picture after the corresponding editor of the edit operation in response to the edit operation to the picture；
The edit operation comprises at least one of the following:
Rotation, amplification are reduced or are replaced；
The display screen is also used to show picture after the editor.
6. detection device according to claim 1, which is characterized in that the light occurrence of equipment includes: luminescent screen and figure
Case element, the pattern elements have the candy strip；
The pattern elements include: light shielding part and multiple isolated vertical bars arranged in parallel, and the vertical bar is transmittance section；The hair
Tabula rasa includes: light-emitting component；Described in the transmittance section directive of the light that the light-emitting component issues by the pattern elements
Determinand.
7. detection device according to claim 6, which is characterized in that the pattern elements detachably connect with the luminescent screen
It connects；The number of the pattern elements is multiple, following at least one parameter difference of the different pattern elements:
The distance of the middle line of the extending direction of the vertical bar, the width of the vertical bar or the two neighboring vertical bar.
8. detection device according to claim 6, which is characterized in that the light occurrence of equipment further include: light-guide device,
For receiving the light of the light-emitting component sending and the light being made to be projected to the pattern elements.
9. detection device according to claim 8, which is characterized in that
The light-emitting component is located at the light-guide device periphery, and the light-emitting component is vertical with the orientation of light-guide device guide-lighting
The orientation of element and pattern elements.
10. detection device according to claim 6, which is characterized in that the arrangement side of the pattern elements and light-emitting component
The plane to where perpendicular to the candy strip.
11. detection device according to claim 6, which is characterized in that the light occurrence of equipment further include: lampshade；Institute
Lampshade is stated between the pattern elements and the light-emitting component.
12. detection device according to claim 6, which is characterized in that the light-emitting component includes: multiple LED lamp beads.
13. detection device according to claim 1, which is characterized in that the light beam of the light occurrence of equipment transmitting is flat
The parallel stripe patterns are projected to the determinand by the light beam by row light beam, the light occurrence of equipment.
14. detection device according to claim 1, which is characterized in that further include: bogey；The bogey is used
In the carrying determinand；The bogey includes: second conveyer and second conveyer；The second conveyer
It is consistent with the direction of transfer of the second conveyer；Between having between the second conveyer and the second conveyer
Gap；The imaging device is specifically used for obtaining the light beam for the determinand transmission or reflection for being located at the gap location, shape
At detection image.
15. detection device according to claim 14, which is characterized in that the light occurrence of equipment and the imaging device
The two sides in the gap are located at, the light beam is used to be received after determinand and the gap by imaging device；Or
Person, the light occurrence of equipment and the imaging device are located at the same side in the gap, and the imaging device is for receiving institute
State the light beam of gap location determinand reflection.
16. detection device according to claim 1 or 2, which is characterized in that the type of the defect be tangerine line, mould scrape or
Impression.
17. detection device according to claim 2, which is characterized in that the width value of the vertical bar is in the area [1mm, 3mm]
In；The middle line of the two neighboring vertical bar apart from value in the section [2mm, 6mm].
18. detection device according to claim 17, which is characterized in that the determinand and the light occurrence of equipment
Apart from value in the section [50mm, 150mm].
19. a kind of detection method characterized by comprising
The detection image of determinand is obtained using the described in any item detection devices of claim 1-18；
The defect information of determinand is obtained according to the striped in the detection image.
20. detection method according to claim 19, which is characterized in that according in the detection image striped obtain to
The defect information for surveying object includes one or more of combination:
Whether it is distorted according to striped in the detection image, determines the presence or absence of described defect；
According to the size of spoking in the detection image, flaw size is obtained；
According to the position of spoking in the detection image, defective locations are obtained.
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| CN111123686A (en) * | 2020-01-09 | 2020-05-08 | 广州市心鉴智控科技有限公司 | Light-transmitting cylindrical lens detection device and detection method thereof |
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