CN111504459B - Detection device for ceramic tile grading and color separation - Google Patents
Detection device for ceramic tile grading and color separation Download PDFInfo
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- CN111504459B CN111504459B CN202010275495.4A CN202010275495A CN111504459B CN 111504459 B CN111504459 B CN 111504459B CN 202010275495 A CN202010275495 A CN 202010275495A CN 111504459 B CN111504459 B CN 111504459B
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- 238000001514 detection method Methods 0.000 title claims abstract description 120
- 239000000919 ceramic Substances 0.000 title claims abstract description 89
- 238000000926 separation method Methods 0.000 title claims abstract description 18
- 239000011449 brick Substances 0.000 claims abstract description 33
- 238000003708 edge detection Methods 0.000 claims abstract description 22
- 230000001154 acute effect Effects 0.000 claims description 15
- 230000004075 alteration Effects 0.000 claims description 4
- 230000007547 defect Effects 0.000 abstract description 19
- 238000004458 analytical method Methods 0.000 abstract description 14
- 238000003384 imaging method Methods 0.000 description 4
- 239000011521 glass Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
- G01J3/46—Measurement of colour; Colour measuring devices, e.g. colorimeters
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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
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
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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
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- General Health & Medical Sciences (AREA)
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- Pathology (AREA)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
Abstract
The invention relates to a detection device for ceramic tile grading and color separation, which comprises a detection darkroom, an industrial camera arranged in the detection darkroom, a detection frame arranged in the detection darkroom and a light source arranged in the detection darkroom, wherein the industrial camera is arranged in the detection darkroom; wherein the industrial camera comprises a color difference detection camera, an edge detection camera and a brick surface detection camera; the light source comprises a first light source and a second light source, the first light source is used for being matched with the color difference detection camera and the edge detection camera to work, the second light source is used for being matched with the brick surface detection camera to work, and the first light source emits white light and infrared rays. According to the detection device for ceramic tile grading and color separation, provided by the invention, the color difference, the edge defect and the tile surface defect of the ceramic tile are respectively detected through the arrangement of the industrial camera and the light source, so that the analysis and classification of equipment are facilitated, the automatic detection of the ceramic tile defect and the color difference is realized, the labor intensity of the ceramic tile detection is reduced, and the detection efficiency and accuracy are improved.
Description
Technical Field
The invention relates to the technical field of ceramic detection equipment, in particular to a ceramic tile grading and color separation detection device.
Background
At present, the classification and color separation detection of ceramic tiles is mainly realized by the cooperation of on-line detection and off-line detection, wherein the on-line detection is that a section of manual detection station is arranged at the tail end of a production line and at the front end of a product packaging line, and the ceramic tiles on the production line and standard sample tiles are continuously compared by manpower, so that the ceramic tiles with color difference and defects (such as cracks, grinding, broken corners, pinholes and the like) are selected, and the classification and color separation of the ceramic tiles are realized.
The off-line detection is that after the production line moves for a period of time, a certain amount of similar ceramic tiles (namely, ceramic tiles which are manually detected) in different time periods or different production batches are selected and laid in a room with balanced light, and the ceramic tiles are observed and compared at a certain distance from the ceramic tiles, so that the grade and the final color number of the ceramic tiles are confirmed.
For the detection work of the grading and color separation of the ceramic tiles, detection personnel not only need to have richer working experience and sharp eye light, but also face a 50pcs/min high-speed ceramic wall and floor tile production line, the detection work is high in strength and easy to fatigue, the eye sensitivity is easily reduced for a long time, the accuracy rate is reduced, and the production requirement of the ceramic tiles cannot be met.
Disclosure of Invention
The invention aims to provide a detection device for ceramic tile grading and color separation, which is convenient for mechanical analysis through analysis equipment, reduces labor intensity and improves detection efficiency and accuracy.
In order to solve the technical problem, the invention provides a detection device for ceramic tile grading and color separation, which comprises a detection darkroom, an industrial camera arranged inside the detection darkroom, a detection frame arranged inside the detection darkroom and a light source arranged inside the detection darkroom;
the detection frame is arranged on the lower half part of the detection darkroom and divides the detection darkroom into two mutually independent spaces which are respectively a first space and a second space, and the second space is a closed space;
the light source is arranged in the first space, and the industrial camera is positioned in the second space;
the industrial camera comprises a chromatic aberration detection camera, an edge detection camera and a brick surface detection camera, and a shooting path of the chromatic aberration detection camera is perpendicular to the surface of the ceramic brick;
the light source comprises a first light source and a second light source, the first light source is used for being matched with the color difference detection camera and the edge detection camera to work, the second light source is used for being matched with the brick surface detection camera to work, and the first light source emits white light and infrared rays.
Preferably, the color difference detection camera is a color line camera.
Preferably, the edge of the ceramic tile is further provided with a color chip, the color chip and the ceramic tile surface are located in the same plane, and the color difference detection camera shoots the color chip and the ceramic tile.
Preferably, the edge detection camera is a black-and-white line array camera, and an acute included angle between a shooting path of the edge detection camera and the ceramic brick surface is 70-89 degrees.
Preferably, the brick surface detection camera is a black and white line camera, and an acute included angle between a shooting path of the black and white line camera and the ceramic brick surface is 30-70 degrees.
Preferably, the acute angle included angle between the light emitted by the second light source and the ceramic brick surface is equal to the acute angle included angle between the shooting path of the brick surface detection camera and the ceramic brick surface.
Preferably, the incident angle of the first light source is an acute angle;
the shooting lines of the color difference detection camera and the edge detection camera are positioned in the middle area of the first light source.
Preferably, the detection darkroom is of a box structure.
The implementation of the invention has the following beneficial effects:
according to the detection device for ceramic tile grading and color separation, which is provided by the invention, the color difference, the edge defect and the tile surface defect of the ceramic tile are respectively detected through the arrangement of the industrial cameras and the light source, so that the mechanical analysis is conveniently carried out through the analysis equipment, the automatic detection of the ceramic tile defect is realized, the labor intensity of the ceramic tile detection is reduced, and the detection efficiency and accuracy are improved.
Drawings
FIG. 1 is a schematic view of the internal structure of the detection device for ceramic tile grading and color separation of the present invention;
FIG. 2 is a schematic cross-sectional view of the detection apparatus for ceramic tile grading and color separation of the present invention;
FIG. 3 is a schematic view of the optical path structure of the detection device for ceramic tile grading and color separation of the present invention;
FIG. 4 is a schematic diagram of the light path structure of another embodiment of the detection device for ceramic tile grading and color separation of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings. It is only noted that the invention is intended to be limited to the specific forms set forth herein, including any reference to the drawings, as well as any other specific forms of embodiments of the invention.
As shown in FIGS. 1-3, the detection device for ceramic tile grading and color separation of the present invention comprises a detection darkroom 1, an industrial camera 2 disposed inside the detection darkroom 1, a detection frame 3 disposed inside the detection darkroom 1, and a light source 4 disposed inside the detection darkroom 1;
wherein the industrial camera 2 comprises a color difference detection camera 21, an edge detection camera 22 and a brick face detection camera 23;
the light source 4 comprises a first light source 41 for cooperating with the color difference detection camera 21 and the edge detection camera 22 and a second light source 42 for cooperating with the brick surface detection camera 23, wherein the first light source 41 emits white light and infrared light.
The detection darkroom 1 is of a box structure and is covered on a conveying mechanism for conveying ceramic tiles, so that a closed darkroom is convenient to form, external light is isolated as far as possible, the influence of the external light on a detection result is reduced, the forming precision of the industrial camera 2 is improved, and the omission factor and the false detection rate are reduced.
The industrial camera 2 is arranged at the upper half part of the detection darkroom 1 and is used for shooting photos of the ceramic tiles entering the detection darkroom 1, sending the photos to an external analysis device for analysis, facilitating comparison, and confirming the grade and color number of the ceramic tiles, and comprises a color difference detection camera 21 for detecting whether the ceramic tiles have color difference, an edge detection camera 22 for detecting whether the edges of the ceramic tiles have defects, and a tile surface detection camera 23 for detecting whether the tile surfaces of the ceramic tiles have defects.
The color difference detection camera 21 is a color line camera, the first light source 41 irradiates the surface of the ceramic tile to highlight the original color of the surface of the ceramic tile, the color difference detection camera 21 shoots a photo and transmits the photo to an external analysis mechanism, and the color number of the ceramic tile is convenient to determine.
As shown in fig. 3, preferably, for better analysis, a color chart is further disposed on the edge of the ceramic tile, the color chart and the ceramic tile surface are located in the same plane, and the color difference detection camera 21 shoots the color chart and the ceramic tile, so as to facilitate comparison analysis and better determine the color number of the ceramic tile. In order to prevent the shot ceramic tiles from having color difference caused by angle shooting and influencing the detection accuracy, the shooting path of the color difference detection camera 21 is perpendicular to the ceramic tile surface, so that the detection accuracy is ensured.
Here, at any time, an imaging area of the industrial camera 2 on the tile surface is defined as an imaging line, and a path along which the imaging line moves from the industrial camera to the tile surface is defined as an imaging path, which is the same as the following.
The edge detection camera 22 is a black-and-white linear array camera, because the first light source 41 emits infrared rays, light reflected by the surface of the ceramic tile with a smooth surface is easily received by the lens, and shows a high-brightness state, when the ceramic tile is uneven, diffuse reflection occurs, part of light cannot be captured by the lens, the image brightness is low, and black spots are shown, so that the appearance of the edge defects of the ceramic tile is realized, and the judgment and analysis can be conveniently carried out through external analysis equipment.
As shown in FIG. 3, in order to better capture the defect of the edge of the ceramic tile, the acute angle included angle between the shooting path of the edge detection camera 22 and the surface of the ceramic tile is 70-89 degrees, which ensures that the edge detection camera 22 can irradiate any edge of the ceramic tile on one hand and the edge detection camera 22 can accurately capture the defect of the edge of the ceramic tile on the other hand.
Brick face detects camera 23 and is black and white linear array camera for whether there is the defect on the surface that detects the ceramic brick face, its detection principle with edge detection camera 22's detection principle is the same, in order to guarantee the receipt that brick face detects camera 23 can be better the reflection light of light source 4, the acute angle contained angle between light that second light source 42 sent and the ceramic brick face with brick face detects that the shooting route of camera 23 equals with the acute angle contained angle of ceramic brick face, in order to guarantee second light source 42 does not influence the shooting of brick face detection camera 23, second light source 42 and shooting line are not on same straight line. For the smooth surface of the ceramic brick, the incident angle is equal to the emergent angle, so that the brick surface detection camera 23 is arranged on the path of the emergent light to better receive the emergent light, so that the brick surface detection camera 23 can receive high-brightness light, when the ceramic brick surface is uneven, the brick surface detection camera 23 cannot receive the reflected light, and a dark area appears, thereby realizing the detection of the surface defects of the ceramic brick surface.
As shown in fig. 3-4, in order to better capture the defects of the ceramic tile surface, the acute angle included angle between the shooting path of the tile surface detection camera 23 and the ceramic tile surface is 30-70 °.
The detection frame 3 is arranged on the lower half part of the detection darkroom 1, which can be made of glass or a transparent partition plate, and is used for separating the detection darkroom 1 into two mutually independent spaces, namely a first space 11 and a second space 12, wherein the second space 12 is a closed space, the industrial camera 2 is positioned in the second space 12 and used for preventing external dust and the like from entering the second space 12 to pollute the industrial camera 2 and influence the accuracy of the detection of the ceramic tiles. In order to facilitate the industrial camera 2 to photograph the ceramic tiles, the detection frame 3 is made of a transparent material, such as glass or the like.
The light source 4 is arranged in the first space of the detection darkroom 1 and used for irradiating the ceramic tile, so that the industrial camera 2 can shoot the ceramic tile conveniently, is arranged between the ceramic tile and the detection frame 3, can be an LED light source or a halogen light source, and is specifically selected according to actual needs.
In order to better match the industrial camera 2 for shooting, the light source 4 includes a first light source 41 for matching the color difference detection camera 21 and the edge detection camera 22, and a second light source 42 for matching the brick surface detection camera 23, where the first light source 41 emits white light and infrared light, which may be a lamp equipped with a white light source and an infrared light source, or an LED light source equipped with a white light chip and an infrared chip, and is specifically selected according to actual needs.
In order to better realize illumination and provide a high-brightness environment, the number of the first light sources 41 is at least one, when the number of the first light sources is at least two, the at least two groups of the first light sources 41 are oppositely arranged, the shooting lines of the color difference detection camera 21 and the edge detection camera 22 are located in the middle area of the first light sources 41, and the incident angle of the first light sources 41 is an acute angle.
The second light source 42 is used for cooperating with the brick surface detection camera 23 to work, is a white light source, and irradiates the ceramic brick surface at a preset angle, in this embodiment, the incident angle of the second light source 42 is 20 ° to 60 °, and the inclined arrangement can better detect defects on the ceramic brick surface.
According to the detection device for ceramic tile grading and color separation, which is provided by the invention, the color difference, the edge defect and the tile surface defect of the ceramic tile are respectively detected through the arrangement of the industrial cameras 2 and the light source 4, so that the mechanical analysis is conveniently carried out through the analysis equipment, the automatic detection of the ceramic tile defect is realized, the labor intensity of the ceramic tile detection is reduced, and the detection efficiency and accuracy are improved.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention.
Claims (8)
1. The detection device for ceramic tile grading and color separation is characterized by comprising a detection darkroom, an industrial camera arranged inside the detection darkroom, a detection frame arranged inside the detection darkroom and a light source arranged inside the detection darkroom;
the detection frame is arranged on the lower half part of the detection darkroom and divides the detection darkroom into two mutually independent spaces which are respectively a first space and a second space, and the second space is a closed space;
the light source is arranged in the first space, and the industrial camera is positioned in the second space;
the industrial camera comprises a chromatic aberration detection camera, an edge detection camera and a brick surface detection camera, and a shooting path of the chromatic aberration detection camera is perpendicular to the surface of the ceramic brick;
the light source comprises a first light source and a second light source, the first light source is used for being matched with the color difference detection camera and the edge detection camera to work, the second light source is used for being matched with the brick surface detection camera to work, and the first light source emits white light and infrared rays.
2. The apparatus of claim 1, wherein the color difference detecting camera is a color line camera.
3. The apparatus according to claim 1, wherein the edge of the ceramic tile is further provided with a color chip, the color chip and the ceramic tile are located in the same plane, and the color difference detection camera shoots the color chip and the ceramic tile.
4. The apparatus of claim 1, wherein the edge detection camera is a black and white line camera, and the acute angle between the shooting path of the edge detection camera and the ceramic tile surface is 70-89 °.
5. The apparatus as claimed in claim 1, wherein the tile surface detecting camera is a black and white line camera, and the acute angle between the shooting path and the tile surface is 30-70 °.
6. The apparatus of claim 1, wherein the acute angle between the light emitted from the second light source and the face of the ceramic tile is equal to the acute angle between the image capturing path of the tile face detecting camera and the face of the ceramic tile.
7. The apparatus of claim 1, wherein the first light source has an acute angle of incidence;
the shooting lines of the color difference detection camera and the edge detection camera are positioned in the middle area of the first light source.
8. The apparatus of claim 1, wherein the dark chamber is a box structure.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010275495.4A CN111504459B (en) | 2020-04-09 | 2020-04-09 | Detection device for ceramic tile grading and color separation |
| PCT/CN2020/124979 WO2021203683A1 (en) | 2020-04-09 | 2020-10-29 | Testing device for grading and color-based separation of ceramic tiles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010275495.4A CN111504459B (en) | 2020-04-09 | 2020-04-09 | Detection device for ceramic tile grading and color separation |
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| Publication Number | Publication Date |
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| CN111504459A CN111504459A (en) | 2020-08-07 |
| CN111504459B true CN111504459B (en) | 2021-10-08 |
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| WO (1) | WO2021203683A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111504459B (en) * | 2020-04-09 | 2021-10-08 | 广东科达洁能股份有限公司 | Detection device for ceramic tile grading and color separation |
| CN113640310A (en) * | 2021-10-18 | 2021-11-12 | 南京光衡科技有限公司 | Tile surface defect detection visual system and detection method |
| CN114841915A (en) * | 2022-03-14 | 2022-08-02 | 阿里巴巴（中国）有限公司 | Tile flaw detection method and system based on artificial intelligence and storage medium |
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- 2020-10-29 WO PCT/CN2020/124979 patent/WO2021203683A1/en active Application Filing
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| WO2021203683A1 (en) | 2021-10-14 |
| CN111504459A (en) | 2020-08-07 |
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Address after: 528300 No.1, Huanzhen West Road, Guanglong Industrial Park, Chencun Town, Shunde District, Foshan City, Guangdong Province Patentee after: Keda Manufacturing Co.,Ltd. Address before: 528313, No. 1, West Road, Guang Long Industrial Park, Chencun Town, Shunde District, Guangdong, Foshan Patentee before: KEDA CLEAN ENERGY Co.,Ltd. |