CN110793971A - Visual detection device and visual detection method - Google Patents
Visual detection device and visual detection method Download PDFInfo
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- CN110793971A CN110793971A CN201911120219.4A CN201911120219A CN110793971A CN 110793971 A CN110793971 A CN 110793971A CN 201911120219 A CN201911120219 A CN 201911120219A CN 110793971 A CN110793971 A CN 110793971A
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- 238000001514 detection method Methods 0.000 title abstract description 20
- 230000000007 visual effect Effects 0.000 title abstract description 7
- 238000011179 visual inspection Methods 0.000 claims abstract description 16
- 238000000034 method Methods 0.000 claims abstract description 9
- 238000012634 optical imaging Methods 0.000 claims abstract description 7
- 230000007547 defect Effects 0.000 claims abstract description 4
- 230000001105 regulatory effect Effects 0.000 claims description 17
- 230000000295 complement effect Effects 0.000 claims description 9
- 238000005498 polishing Methods 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 8
- 239000003086 colorant Substances 0.000 description 3
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000003384 imaging method Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/8806—Specially adapted optical and illumination features
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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
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
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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
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
- G01N2021/0106—General arrangement of respective parts
- G01N2021/0112—Apparatus in one mechanical, optical or electronic block
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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
- G01N21/8851—Scan or image signal processing specially adapted therefor, e.g. for scan signal adjustment, for detecting different kinds of defects, for compensating for structures, markings, edges
- G01N2021/8854—Grading and classifying of flaws
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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
- G01N21/8851—Scan or image signal processing specially adapted therefor, e.g. for scan signal adjustment, for detecting different kinds of defects, for compensating for structures, markings, edges
- G01N2021/8887—Scan or image signal processing specially adapted therefor, e.g. for scan signal adjustment, for detecting different kinds of defects, for compensating for structures, markings, edges based on image processing techniques
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- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
Abstract
The invention discloses a visual detection device which comprises a sample placing surface, a reflecting block and a camera, wherein the placing surface, the reflecting block and the camera are sequentially arranged along a straight line, the reflecting block comprises a plurality of reflecting surfaces, the reflecting surfaces are sequentially connected to form a through hole penetrating through the reflecting block, and the section of the through hole is gradually reduced from the camera to the placing surface. A method of visual inspection comprising the steps of: a. adjusting a spacing between the sample and the plurality of inclined reflective surfaces; b. collecting a mirror image of a sample in the polygonal mirror by using an optical imaging device; c. extracting and splicing the mirror images in the reflecting blocks by using an image processing program; d. and analyzing and marking the defects of the images acquired in batches by using an image processing program. By using a combination of one camera and a polygon mirror to simultaneously acquire multi-surface images of a product, hardware cost and acquisition time can be greatly reduced compared with simultaneous detection by using a plurality of CCD cameras. The invention is used in the technical field of detection equipment.
Description
Technical Field
The invention relates to the technical field of detection equipment, in particular to a visual detection device and a visual detection method.
Background
At present, the multi-surface appearance detection of mainstream products utilizes three or four CCD cameras to carry out photographing detection from the side, and the detection system is very complex in structure and very expensive in cost.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the present invention provides a visual inspection apparatus and a visual inspection method, which are used to solve one or more technical problems in the prior art and provide at least one useful choice or creation condition.
The solution of the invention for solving the technical problem is as follows:
the utility model provides a visual inspection device, includes that the sample places face, reflection block and camera, it arranges in proper order along the straight line to place plane, reflection block and camera, the reflection block includes a plurality of reflection planes, and is a plurality of the reflection plane links to each other in proper order and forms the through-hole that runs through the reflection block, the through-hole reduces gradually from camera to placing its cross-section of plane direction.
Through above-mentioned technical scheme, place the sample in placing the plane and with the through-hole and the camera in the position of collinear when detecting the sample, the light that the sample reflected is caught by the camera to camera through the plane of reflection. By using the combination of one camera and the reflecting block to acquire multi-surface images of the product at the same time, compared with the simultaneous detection of a plurality of CCD cameras, the hardware cost and the acquisition time can be greatly reduced.
As above-mentioned technical scheme's further improvement, including the support, the support includes stand, base, first regulating plate, second regulating plate and camera seat, second regulating plate, first regulating plate and camera seat are from up arranging in proper order down, the stand sets up in the base top, camera and camera seat fixed connection, the reflection block sets up on first regulating plate, the sample is placed the upper surface that the face set up to the second regulating plate.
Through the technical scheme, the support is used for supporting and fixing the reflection block, the camera and other components.
As the further improvement of the above technical scheme, first regulating plate, second regulating plate and camera seat are close to the first seat of adjusting of the equal fixedly connected with of one end of stand, first regulation seat slides with the stand and is connected, the seat is adjusted to the bottom fixedly connected with second of stand, the second is adjusted the seat and is slided with the base and be connected.
By the technical scheme, the sample can be clearly imaged on the reflecting surface by adjusting the distance between the first adjusting plate and the second adjusting plate; the distance between the first adjusting plate and the camera is adjusted, and the focal length of the camera is adjusted to enable the camera to clearly capture the image reflected on the reflecting surface, so that the accuracy of the detection device is improved.
As a further improvement of the above technical solution, the second adjusting plate is made of a light-transmitting material.
Through above-mentioned technical scheme, the material of second regulating plate sets up to the printing opacity material and makes the sample formation of image more clear.
As a further improvement of the above technical solution, a plurality of parallel light sources are disposed below the second adjusting plate, and light emitted from the plurality of parallel light sources is directed to the same region of the second adjusting plate.
Through above-mentioned technical scheme, the parallel light source through the below setting is polished for the sample, makes the clear formation of image of sample surface in the speculum, makes things convenient for the processing of later stage image.
As a further improvement of the above technical solution, the parallel light source is a variable color RGB parallel light source.
Through the technical scheme, when the sample is placed on the object platform, the complementary color of the main body color of the sample is selected as the color of the emergent light of the variable color RGB parallel light source to polish the sample according to the color of the product. The complementary colors are used for polishing, and the imaging effect is better than that of the common single polishing effect.
As a further improvement of the above technical solution, the camera is configured as a CCD camera.
Through the technical scheme, the CCD camera can convert the captured image into the digital signal, so that the digital signal can be transmitted into the processing device, the digital signal of the image of the processing device is used for editing, processing and analyzing, and the accuracy of the detection device is improved.
A method of visual inspection comprising the steps of: a. adjusting the distance between the sample and the plurality of inclined reflecting surfaces to enable the whole shape of the product to be imaged completely and clearly in the plurality of reflecting surfaces; b. adjusting the distance between the plurality of reflecting surfaces and the optical imaging device, adjusting the focal length and exposure of the optical imaging device, and collecting the mirror image of the sample in the polygonal mirror by using the optical imaging device; c. extracting and splicing the mirror images in the reflecting surface by using an image processing program; d. and analyzing and marking the defects of the images acquired in batches by using an image processing program.
Through above-mentioned technical scheme, the light that the sample was reflected is caught by the camera to camera through the plane of reflection. By using a combination of one camera and a polygon mirror to simultaneously acquire multi-surface images of a product, hardware cost and acquisition time can be greatly reduced compared with simultaneous detection by using a plurality of CCD cameras.
As a further improvement of the above technical solution, the method further comprises the following steps: according to the main color of the sample, the complementary color of the main color of the sample is selected as the polishing color, and the sample is polished by using a parallel light source.
Through the technical scheme, the complementary color of the main body color of the sample is selected as the color of the light emitted by the variable color RGB parallel light source to polish the sample according to the color of the product. The complementary colors are used for polishing, and the imaging effect is better than that of the common single polishing effect.
As a further improvement of the above technical solution, the method further comprises the following steps: the inclination angle of the reflecting surfaces and the number of the reflecting surfaces are designed according to the size of the product.
Through the technical scheme, the number of the reflecting surfaces and the inclination angle of the reflecting surfaces are adjusted, so that the sample can be completely and clearly imaged on the reflecting surfaces.
The invention has the beneficial effects that: when the sample is detected, the sample is placed on the placing plane and is positioned at the same straight line position with the through hole and the camera, and light reflected by the sample is reflected to the camera through the reflecting surface and is captured by the camera. By using the combination of one camera and the reflecting block to acquire multi-surface images of the product at the same time, compared with the simultaneous detection of a plurality of CCD cameras, the hardware cost and the acquisition time can be greatly reduced.
The invention is used in the technical field of detection equipment.
Drawings
In order to more clearly illustrate the technical solution in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. It is clear that the described figures are only some embodiments of the invention, not all embodiments, and that a person skilled in the art can also derive other designs and figures from them without inventive effort.
FIG. 1 is a schematic view of the overall structure of the present invention;
fig. 2 is a schematic view of the overall structure of the polygon mirror;
FIG. 3 is a step diagram of the detection method of the present invention.
In the figure, 100, an adjusting bracket; 110. a column; 111. a second adjusting seat; 120. a base; 130. a first adjusting seat; 131. a first adjusting plate; 132. a second adjusting plate; 133. a camera stand; 200. a reflection block; 210. a reflective surface; 300. a CCD camera; 400. variable color RGB parallel light source.
Detailed Description
The conception, the specific structure, and the technical effects produced by the present invention will be clearly and completely described below in conjunction with the embodiments and the accompanying drawings to fully understand the objects, the features, and the effects of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and those skilled in the art can obtain other embodiments without inventive effort based on the embodiments of the present invention, and all embodiments are within the protection scope of the present invention. In addition, all the coupling/connection relationships mentioned herein do not mean that the components are directly connected, but mean that a better coupling structure can be formed by adding or reducing coupling accessories according to specific implementation conditions. All technical characteristics in the invention can be interactively combined on the premise of not conflicting with each other.
Referring to fig. 1 and 2, a visual inspection apparatus includes an adjustment bracket 100, a reflection block 200, and a CCD camera 300. The adjusting bracket 100 comprises a vertical column 110, a second adjusting seat 111 is fixedly connected to the bottom end of the vertical column 110, and the second adjusting seat 111 is connected with the base 120 in a sliding manner. One side of stand 110 is provided with three first regulation seat 130, and first regulation seat 130 slides with stand 110 and is connected, fixedly connected with slide rail on the stand 110, has seted up the spout on the first regulation seat 130. The middle part fixedly connected with rack of slide rail is provided with the gear with rack toothing in the first regulation seat 130, gear and rotation handle fixed connection rotate the handle and be connected with first regulation seat 130 rotation, rotate the one end of handle and stretch out first regulation seat 130. The one end that the handle was kept away from to rotate first regulation seat 130 is provided with locking screw, and locking screw and first regulation seat 130 threaded connection, locking screw are used for fixing the height at first regulation seat 130 place. The three first adjusting seats 130 from bottom to top are respectively fixedly connected with the second adjusting plate 132, the first adjusting plate 131 and the camera seat 133 through screws.
The reflection block 200 is disposed on the first adjustment plate 131 and is fixedly coupled with the first adjustment plate 131 by screws. The reflection block 200 includes a plurality of reflection surfaces 210. The number of the reflecting surfaces 210 and the inclination angle thereof are usually set to four or six according to parameters such as the size of the product, in this embodiment, the number of the reflecting surfaces 210 is set to six, the reflecting surfaces 210 are set to be mirror surfaces, and the six reflecting surfaces 210 are sequentially connected to form a through hole with a gradually reduced cross section from top to bottom.
The second adjusting plate 132 is made of a transparent material, and in this embodiment, the second adjusting plate 132 is made of glass. The sample to be detected is placed on the second adjustment plate 132 and the sample is placed below the through hole so that the sample can be reflected by the reflection surface 210 and the mirror image of the sample reflected by the reflection surface 210 can be captured by the CCD camera 300.
Three color-changeable RGB parallel light sources 400 are arranged below the second adjusting plate 132, and the RBG parallel light sources can polish the sample. When the sample is placed on the object stage, the complementary color set is selected as the color of the light emitted by the variable color RGB parallel light source 400 according to the color of the product, and the product is polished by using the variable color RGB parallel light source 400. The complementary colors are used for polishing, and the imaging effect is much better than that of the common single polishing effect.
The implementation steps of this embodiment are:
(1) designing the number of the reflecting surfaces 210 and the inclination angle thereof according to the size of the sample;
(2) selecting a complementary color of the sample body color as the color of the light emitted by the variable color RGB parallel light source 400 according to the body color of the sample, and polishing the sample by using the variable color RGB parallel light source 400;
(3) adjusting the distance between the first adjusting plate 131 and the second adjusting plate 132 to enable the overall shape of the product to be completely and clearly imaged in the reflecting surface 210;
(4) adjusting the distance between the first adjusting plate 131 and the CCD camera 300, adjusting the focal length and exposure of the CCD camera 300, and collecting the mirror image of the sample in the reflecting surface 210 by using the CCD camera 300, so that the CCD camera 300 can clearly image;
(5) extracting and splicing the mirror images in the reflecting surface 210 by using an image processing program;
(6) and analyzing and marking the defects of the images acquired in batches by using an image processing program.
While the preferred embodiments of the present invention have been illustrated and described, it will be understood by those skilled in the art that the present invention is not limited to the details of the embodiments shown and described, but is capable of numerous equivalents and substitutions without departing from the spirit of the invention as set forth in the claims appended hereto.
Claims (10)
1. A visual inspection device, characterized by: including sample placement surface, reflection piece (200) and camera, it arranges in proper order along the straight line to place plane, reflection piece (200) and camera, reflection piece (200) include a plurality of reflection planes (210), and is a plurality of reflection plane (210) link to each other in proper order and form the through-hole that runs through reflection piece (200), the through-hole reduces gradually from the camera to placing its cross-section of plane direction.
2. A visual inspection device according to claim 1, wherein: the portable sample storage device comprises a support, the support includes stand (110), base (120), first regulating plate (131), second regulating plate (132) and camera seat (133), from up arranging in proper order down second regulating plate (132), first regulating plate (131) and camera seat (133), stand (110) sets up in base (120) top, camera and camera seat (133) fixed connection, reflection block (200) set up on first regulating plate (131), the sample is placed the surface and is set up to the upper surface of second regulating plate (132).
3. A visual inspection apparatus according to claim 2, wherein: first regulating plate (131), second regulating plate (132) and camera frame (133) are close to the first seat (130) of adjusting of the equal fixedly connected with in one end of stand (110), first regulation seat (130) slide with stand (110) and are connected, seat (111) are adjusted to the bottom fixedly connected with second of stand (110), seat (111) are adjusted with base (120) to the second and are slided and be connected.
4. A visual inspection apparatus according to claim 2, wherein: the second adjusting plate (132) is made of light-transmitting materials.
5. A visual inspection device according to claim 4, wherein: a plurality of parallel light sources are arranged below the second adjusting plate (132), and light emitted by the parallel light sources faces to the same area of the second adjusting plate (132).
6. A visual inspection device according to claim 5, wherein: the parallel light source is set as a variable color RGB parallel light source (400).
7. A visual inspection device according to claim 1, wherein: the camera is configured as a CCD camera (300).
8. A method of visual inspection, comprising: the method comprises the following steps:
a. adjusting the distance between the sample and the plurality of inclined reflecting surfaces to enable the whole shape of the product to be imaged completely and clearly in the plurality of reflecting surfaces;
b. adjusting the distance between the plurality of reflecting surfaces and the optical imaging device, adjusting the focal length and exposure of the optical imaging device, and collecting the mirror image of the sample in the polygonal mirror by using the optical imaging device;
c. extracting and splicing the mirror images in the reflecting surface by using an image processing program;
d. and analyzing and marking the defects of the images acquired in batches by using an image processing program.
9. A visual inspection method according to claim 8, wherein: also comprises the following steps: according to the main color of the sample, the complementary color of the main color of the sample is selected as the polishing color, and the sample is polished by using a parallel light source.
10. A visual inspection method according to claim 8, wherein: also comprises the following steps: the inclination angle of the reflecting surfaces and the number of the reflecting surfaces are designed according to the size of the product.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911120219.4A CN110793971A (en) | 2019-11-15 | 2019-11-15 | Visual detection device and visual detection method |
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| CN201911120219.4A CN110793971A (en) | 2019-11-15 | 2019-11-15 | Visual detection device and visual detection method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113640318A (en) * | 2021-10-19 | 2021-11-12 | 四川京龙光电科技有限公司 | Four mirror surface intellectual detection system equipment of monocular |
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