CN209387542U - A kind of detection device for eliminating material shade - Google Patents
A kind of detection device for eliminating material shade Download PDFInfo
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- CN209387542U CN209387542U CN201822174488.6U CN201822174488U CN209387542U CN 209387542 U CN209387542 U CN 209387542U CN 201822174488 U CN201822174488 U CN 201822174488U CN 209387542 U CN209387542 U CN 209387542U
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Abstract
The utility model discloses a kind of detection devices for eliminating material shade, belong to material detection technique field.Including the lighting source being made of first light source and second light source, the lighting source side setting detection camera, the detection camera side is provided with the background mechanism being made of background light source and background board, the lighting source, detection camera, background mechanism is ipsilateral is provided with material to be checked, the detection camera, background mechanism, material to be checked are arranged on optical axis, and the lighting source is arranged between detection camera and material to be checked.The luminance information of dark flaw is converted to colouring information, improves recognition effect by the utility model by the selection of characteristic spectrum, reduces the negative effect of brightness irregularities bring；Structure is simple, easy to use, practical, is suitble to promote the use of.
Description
Technical field
The utility model relates to material detection technique field more particularly to a kind of detection devices for eliminating material shade.
Background technique
Machine vision is will to be ingested target by machine vision product to be converted into picture signal, sends dedicated image to
Processing system obtains the shape information of target subject, according to image respectively with the information such as brightness, color, is transformed into numeralization letter
Number.Picture system carries out various operations to these signals to extract clarification of objective, and then is controlled now according to the result of differentiation
The device action of field.Wherein most crucial is machine vision acquisition system, this system generally comprise lighting device, Background apparatus,
Camera apparatus, an outstanding vision collecting scheme are particularly critical to subsequent algorithm.
It is directed to food and industrial goods field, dark-coloured flaw has vital influence to product quality, generally conventional
Detection scheme is that the surface color information of material to be checked is obtained using color camera, by the image grayscale difference of material to be checked come
Distinguish dark-coloured material to be checked and qualified product.A kind of this method illumination path is required it is very high, illumination optical path it is uneven or to
When inspection surface of material is uneven, the luminance difference of acquired material different zones to be checked is larger, easily mixed with dark-coloured flaw
Confuse, finally will affect final recognition effect.
In order to realize the illumination system of high uniformity, detection device needs are very huge, higher to system space requirements, and
Conventional NI Vision Builder for Automated Inspection further includes transmission device, device for eliminating etc., is limited to examine other than including detection detection device
Space is surveyed, arranges that the lighting device of high uniformity is very difficult.Therefore, a kind of elimination material is proposed regarding to the issue above
The detection device of shade.
Utility model content
The purpose of this utility model is that solve the uneven caused dark-coloured flaw of above-mentioned material surface brightness to be measured
Defect identify the problem of and provide it is a kind of eliminate material shade detection device, have the advantages that convenient for material detection.
To achieve the above objectives, the present invention adopts the following technical solutions:
A kind of detection device for eliminating material shade, including the lighting source being made of first light source and second light source, institute
Lighting source side setting detection camera is stated, the detection camera side is provided with the background being made of background light source and background board
Mechanism, the lighting source, detection camera, background mechanism be ipsilateral to be provided with material to be checked, the detection camera, background mechanism,
Material to be checked is arranged on optical axis, and the lighting source is arranged between detection camera and material to be checked.
Further technical solution, the lighting source are arranged in optical axis two sides up and down, and are arrangement symmetrical above and below.
Further technical solution, the first light source is visible light source or near-infrared light source, and second light source is phase
Corresponding near-infrared light source or visible light source.
Further technical solution, the background light source is visible light source, and background board is diffusing reflection material.
Further technical solution, the visible light source spectral region is between 400nm-650nm, near-infrared light source light
Between spectral limit 700nm-1100nm.
Further technical solution, the detection camera are the image information that can obtain visible light and near-infrared light source
Imaging sensor, and imaging sensor is line array sensor.
Further technical solution, the detection camera side are provided with negativity optical filter, and negativity optical filter and detection
Camera, background mechanism, material to be checked are arranged on optical axis.
Beneficial effect
The utility model compared with prior art, has the following obvious advantages:
1, for the utility model by generating visible light and near infrared light to surface of material, detecting camera apparatus acquisition can
Light-exposed and infrared combination picture, handles combination picture, and infrared channel and a visible channel do color difference ratio, according to
Color difference difference carries out identification differentiation, chooses two characteristic spectrums and makees color difference ratio, feature difference is greater than two visible lights, passes through
The luminance information of dark flaw is converted to colouring information, improves recognition effect, reduce brightness disproportionation by the selection of characteristic spectrum
Even bring negative effect.
2, the utility model has the advantages of simple structure, easy to use, practical, is suitble to promote the use of.
Detailed description of the invention
Fig. 1 is the utility model overall structure diagram.
Fig. 2 is detection side of the invention testing result schematic diagram.
Fig. 3 is 2 schematic diagram of implementation column of the present invention.
In figure: 1- first light source, 2- second light source, 3- detection camera, 4- background light source, 5- background board, 6- material to be checked,
7- negativity optical filter.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
Implementation column 1
As shown in fig.3, a kind of detection device for eliminating material shade, including be made of first light source 1 and second light source 2
Lighting source, lighting source side setting detection camera 3,3 side of detection camera is provided with by 4 He of background light source
The background mechanism that background board 5 is constituted, the lighting source, detection camera 3, background mechanism be ipsilateral to be provided with material 6 to be checked, described
Detection camera 3, background mechanism, material to be checked 6 are arranged on optical axis, and the lighting source is arranged in detection camera 3 and to be checked
Between material 6.
The lighting source is arranged in optical axis two sides up and down, and is arrangement symmetrical above and below.
The first light source 1 is visible light source or near-infrared light source, and second light source 2 is corresponding near-infrared light source
Or visible light source.
The background light source 4 is visible light source, and background board 5 is diffusing reflection material.
The visible light source spectral region is between 400nm-650nm, near-infrared light source spectral region 700nm-
Between 1100nm.
The detection camera 3 is the imaging sensor of an image information that can obtain visible light and near-infrared light source, and
Imaging sensor is line array sensor.
3 side of detection camera is provided with negativity optical filter 7, and negativity optical filter 7 and detection camera 3, background mechanism,
Material 6 to be checked is arranged on optical axis.
The machine detection device includes two sets of lighting source, detection 3 liang of camera sets, two sets of background mechanisms, material to be checked
6。
Detection camera 3, background mechanism, 6 three of material to be checked arrange on optical axis, and lighting source is arranged in detection camera
Between 3 and material to be checked 6.
The angle of two detection cameras 2 is at 5 ° -40 °, and preferably 10 °；
The angle of lighting source and optical axis is between 10 degree to 50 degree, and preferably 30 °.
First light source 1 is visible light source and second light source 2 is near-infrared light source, is opened simultaneously.
Detection camera 3 is line-scan digital camera, can acquire near-infrared, R, G, B image information simultaneously.
Implementation column 2
As shown in fig.1, implementation column 2 is different in implementation column 1:
The machine detection device includes two sets of lighting source, detection 3 liang of camera sets, two sets of background mechanisms, material to be checked
6,7 liang of negativity optical filter sets.
Detection camera 3, background mechanism, 6 three of material to be checked arrange on optical axis, and lighting source is arranged in detection camera
Between 3 and material to be checked 6.
The angle of two detection cameras 2 is at 5 ° -40 °, and preferably 10 °；
The angle of lighting source and optical axis is between 10 degree to 50 degree, and preferably 30 °.
First light source 1 is visible light source and second light source 2 is near-infrared light source, is opened simultaneously.
Detection camera 3 is line-scan digital camera, can acquire near-infrared, R, G, B image information simultaneously.
Negativity optical filter 5 is to block a part of visible light to penetrate, while can pass through near infrared spectrum.Preferred negativity
Optical filter is to prevent 580nm-660nm visible light, through 420nm-580nm&700-1100nm.
Implementation column 3
Implementation column 3 is different in implementation column 2:
The machine detection device includes two sets of lighting source, detection 3 liang of camera sets, two sets of background mechanisms, material to be checked
6,7 liang of negativity optical filter sets.
Detection camera 3, background mechanism, 6 three of material to be checked arrange on optical axis, and lighting source is arranged in detection camera
Between 3 and material to be checked 6.
The angle of two detection cameras 2 is at 5 ° -40 °, and preferably 10 °；
The angle of lighting source and optical axis is between 10 degree to 50 degree, and preferably 30 °.
First light source 1 is visible light source and second light source 2 is near-infrared light source, it is seen that radiant and near-infrared light source according to
Secondary opening.Visible light source and infrared light supply are characterized spectrum.
Detection camera 3 is black and white line-scan digital camera, can respond 400-1100nm spectral region, and detection camera 3 successively acquires
Two characteristic spectrum image informations, are spliced by software ' colored ' image.
Detect camera 3 and lighting source synchronously control.
It is obvious to a person skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and
And without departing substantially from the spirit or essential attributes of the utility model, it can realize that this is practical new in other specific forms
Type.Therefore, in all respects, the present embodiments are to be considered as illustrative and not restrictive, this is practical new
The range of type is indicated by the appended claims rather than the foregoing description, it is intended that containing for the equivalent requirements of the claims will be fallen in
All changes in justice and range are embraced therein.It should not treat any reference in the claims as limiting
Related claim.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiments being understood that.
Claims (7)
1. a kind of detection device for eliminating material shade, it is characterised in that: including by first light source (1) and second light source (2) structure
At lighting source, lighting source side setting detection camera (3), detection camera (3) side is provided with by background
The background mechanism that light source (4) and background board (5) are constituted, the lighting source, detection camera (3), background mechanism is ipsilateral is provided with
Material (6) to be checked, the detection camera (3), background mechanism, material to be checked (6) are arranged on optical axis, the lighting source row
Cloth is between detection camera (3) and material to be checked (6).
2. a kind of detection device for eliminating material shade according to claim 1, it is characterised in that: the lighting source row
Cloth two sides above and below optical axis, and be arrangement symmetrical above and below.
3. a kind of detection device for eliminating material shade according to claim 1, it is characterised in that: the first light source
It (1) is visible light source or near-infrared light source, and second light source (2) is corresponding near-infrared light source or visible light source.
4. a kind of detection device for eliminating material shade according to claim 1, it is characterised in that: the background light source
It (4) is visible light source, and background board (5) is diffusing reflection material.
5. a kind of detection device for eliminating material shade according to claim 3, it is characterised in that: the visible light source
Spectral region is between 400nm-650nm, between near-infrared light source spectral region 700nm-1100nm.
6. a kind of detection device for eliminating material shade according to claim 1, it is characterised in that: the detection camera
(3) imaging sensor of the image information of visible light and near-infrared light source can be obtained for one, and imaging sensor is that linear array passes
Sensor.
7. a kind of detection device for eliminating material shade according to claim 1, it is characterised in that: the detection camera
(3) side is provided with negativity optical filter (7), and negativity optical filter (7) and detection camera (3), background mechanism, material to be checked (6)
It arranges on optical axis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822174488.6U CN209387542U (en) | 2018-12-24 | 2018-12-24 | A kind of detection device for eliminating material shade |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822174488.6U CN209387542U (en) | 2018-12-24 | 2018-12-24 | A kind of detection device for eliminating material shade |
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| CN209387542U true CN209387542U (en) | 2019-09-13 |
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| CN201822174488.6U Active CN209387542U (en) | 2018-12-24 | 2018-12-24 | A kind of detection device for eliminating material shade |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109444155A (en) * | 2018-12-24 | 2019-03-08 | 劳弗尔视觉科技有限公司 | A kind of detection device and method for eliminating material shade |
| CN113210290A (en) * | 2021-05-14 | 2021-08-06 | 安徽中科光电色选机械有限公司 | Novel select separately lighting system of plastic pellet black spot |
-
2018
- 2018-12-24 CN CN201822174488.6U patent/CN209387542U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109444155A (en) * | 2018-12-24 | 2019-03-08 | 劳弗尔视觉科技有限公司 | A kind of detection device and method for eliminating material shade |
| CN113210290A (en) * | 2021-05-14 | 2021-08-06 | 安徽中科光电色选机械有限公司 | Novel select separately lighting system of plastic pellet black spot |
| CN113210290B (en) * | 2021-05-14 | 2024-04-02 | 安徽中科光电色选机械有限公司 | Novel illumination system for sorting black spots of plastic particles |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information |
Inventor after: Li Guang Inventor after: Yang Tao Inventor after: Liu Changjin Inventor before: Li Guang Inventor before: Yang Tao Inventor before: Liu Changjin |
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| CB03 | Change of inventor or designer information |