CN112730257A - AVI product optical detection system and method - Google Patents
AVI product optical detection system and method Download PDFInfo
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- CN112730257A CN112730257A CN202110106444.3A CN202110106444A CN112730257A CN 112730257 A CN112730257 A CN 112730257A CN 202110106444 A CN202110106444 A CN 202110106444A CN 112730257 A CN112730257 A CN 112730257A
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- 238000001514 detection method Methods 0.000 title claims abstract description 17
- 230000003287 optical effect Effects 0.000 title claims abstract description 16
- 238000000034 method Methods 0.000 title claims abstract description 13
- 238000012544 monitoring process Methods 0.000 claims abstract description 6
- 238000007689 inspection Methods 0.000 claims description 5
- 238000009434 installation Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000012797 qualification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 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
- G01N21/01—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
- G01N21/84—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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Abstract
The invention discloses an AVI product optical detection system and method, which comprises a box body, wherein an AVI product clamping device, an upper AVI camera, a lower AVI camera and an AVI light source are arranged in an inner cavity of the box body, the AVI product clamping device clamps an AVI product, the upper AVI camera is arranged at the top of the box body, the lower AVI camera is arranged at the bottom of the box body, the AVI light source is arranged on the side wall of the box body, and a monitoring terminal is also arranged outside the box body.
Description
Technical Field
The invention relates to the technical field of AVI product optical detection, in particular to an AVI product optical detection system and method.
Background
In the AVI product production flow of the current factory, many factories still use a lot of manual work to confirm the appearance quality of the produced product, and the manual inspection has great uncertainty and cannot accurately complete the all-round inspection of the product, so that improvement is needed.
Disclosure of Invention
The present invention is directed to an optical inspection system and method for AVI products, so as to solve the problems mentioned in the background art.
In order to achieve the purpose, the invention provides the following technical scheme: the AVI product optical detection system comprises a box body, wherein an AVI product clamping device, an upper AVI camera, a lower AVI camera and an AVI light source are installed in an inner cavity of the box body, the AVI product clamping device clamps an AVI product, the upper AVI camera is installed at the top of the box body, the lower AVI camera is installed at the bottom of the box body, the AVI light source is installed on the side wall of the box body, and a monitoring terminal is further installed outside the box body.
Preferably, this application provides a pair of AVI product optical detection system, wherein, AVI product clamping device is including the tight subassembly in two sets of tops that the symmetry set up, every group the tight subassembly in top all include the tight board in top and push up tight cylinder, push up tight cylinder tail end and install in the box inside wall, the flexible end in top tight cylinder is connected with the tight board in top, two centre gripping AVI product between the tight board in top.
Preferably, the application provides a pair of AVI product optical detection system, wherein, monitor terminal includes the shell body, shell body surface mounting display screen, shell body inner chamber installation main control board, set up central processing unit, image acquisition unit, image enhancement unit, contrast unit and output unit on the main control board, AVI camera, lower AVI camera are connected respectively to the image acquisition unit input, image acquisition unit output passes through image enhancement unit and connects central processing unit, contrast unit connection central processing unit, central processing unit passes through output unit and connects backstage display terminal.
Preferably, the application provides an optical detection system for an AVI product, wherein the use method thereof comprises the following steps:
A. firstly, fixing an AVI product between two tightening plates;
B. the upper AVI camera and the lower AVI camera respectively shoot front and back images of the AVI product;
C. the collected image is output to an image enhancement unit for enhancement processing;
D. the enhanced image is output to a comparison unit and compared with a preset image;
E. and the central processing unit outputs the acquired image and the comparison result to a background display terminal for reference of technicians.
Preferably, the image enhancement unit in step C is as follows:
a. dividing pixels of an output image into a plurality of layers according to brightness values, wherein the brightness of each layer is different, arranging each layer from low to high according to the brightness values, and the boundary of the image in each layer is formed by a closed curve;
b. for the image layer with the lowest brightness and the image layer with the largest brightness, histogram equalization processing is carried out independently, then background noise is removed, and finally noise point removal is carried out;
c. removing noise points of the image layers between the lowest brightness and the highest brightness, removing background noise, and finally performing histogram equalization processing;
d. and finally merging all the processed image layers into an image after image enhancement.
Compared with the prior art, the invention has the beneficial effects that:
(1) the invention has simple working principle and convenient operation, can realize the simultaneous detection of the front and the back of the AVI product, has high detection precision and can improve the production qualification rate of the AVI product.
(2) The image enhancement unit adopted by the invention reduces the global brightness difference of the image, enhances the image contrast, effectively inhibits noise and further improves the definition of the image.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a block diagram of the control scheme of the present invention;
FIG. 3 is a flow chart of the present invention;
in the figure: the device comprises a box body 1, an upper AVI camera 2, a lower AVI camera 3, an AVI light source 4, an AVI product 5, a monitoring terminal 6, a jacking plate 7, a jacking cylinder 8, an outer shell 9, a display screen 10, a central processing unit 11, an image acquisition unit 12, an image enhancement unit 13, a comparison unit 14, an output unit 15 and a background display terminal 16.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, such as "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1-3, the present invention provides a technical solution: an AVI product optical detection system comprises a box body 1, wherein an AVI product clamping device, an upper AVI camera 2, a lower AVI camera 3 and an AVI light source 4 are installed in the inner cavity of the box body 1, the AVI product clamping device clamps an AVI product 5, the upper AVI camera 2 is installed at the top of the box body 1, the lower AVI camera 3 is installed at the bottom of the box body 1, the AVI light source 4 is installed on the side wall of the box body 1, and a monitoring terminal 6 is also installed outside the box body 1; AVI product clamping device is including the tight subassembly in two sets of tops that the symmetry set up, every group the tight subassembly in top all include the tight board 7 in top and the tight cylinder 8 in top, 8 tail ends in the tight cylinder in top are installed in 1 inside wall of box, the tight cylinder 8 in top flexible end in top is connected with the tight board 7 in top, two centre gripping AVI product 5 between the tight board 7 in top.
In the invention, a monitoring terminal 6 comprises an outer shell 9, a display screen 10 is arranged on the surface of the outer shell 9, a main control board is arranged in the inner cavity of the outer shell 9, a central processing unit 11, an image acquisition unit 12, an image enhancement unit 13, a comparison unit 14 and an output unit 15 are arranged on the main control board, the input end of the image acquisition unit 12 is respectively connected with an upper AVI camera 2 and a lower AVI camera 3, the output end of the image acquisition unit 12 is connected with the central processing unit 11 through the image enhancement unit 13, the comparison unit 14 is connected with the central processing unit 11, and the central processing unit 11 is connected with a background display terminal 16 through the output unit.
The working principle is as follows: the using method of the invention comprises the following steps:
A. firstly, fixing an AVI product between two tightening plates;
B. the upper AVI camera and the lower AVI camera respectively shoot front and back images of the AVI product;
C. the collected image is output to an image enhancement unit for enhancement processing;
D. the enhanced image is output to a comparison unit and compared with a preset image;
E. and the central processing unit outputs the acquired image and the comparison result to a background display terminal for reference of technicians.
The image enhancement unit enhancement method in the step C is as follows:
a. dividing pixels of an output image into a plurality of layers according to brightness values, wherein the brightness of each layer is different, arranging each layer from low to high according to the brightness values, and the boundary of the image in each layer is formed by a closed curve;
b. for the image layer with the lowest brightness and the image layer with the largest brightness, histogram equalization processing is carried out independently, then background noise is removed, and finally noise point removal is carried out;
c. removing noise points of the image layers between the lowest brightness and the highest brightness, removing background noise, and finally performing histogram equalization processing;
d. and finally merging all the processed image layers into an image after image enhancement.
The image enhancement unit adopted by the invention reduces the global brightness difference of the image, enhances the image contrast, effectively inhibits noise and further improves the definition of the image.
In conclusion, the method has the advantages of simple working principle, convenience in operation, high detection precision and capability of realizing simultaneous detection of the front side and the back side of the AVI product and improving the production qualification rate of the AVI product.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (5)
1. An AVI product optical detection system, includes box (1), its characterized in that: the AVI product clamping device, the upper AVI camera (2), the lower AVI camera (3) and the AVI light source (4) are installed in the inner cavity of the box body (1), the AVI product clamping device clamps the AVI product (5), the upper AVI camera (2) is installed at the top of the box body (1), the lower AVI camera (3) is installed at the bottom of the box body (1), the AVI light source (4) is installed on the side wall of the box body (1), and the monitoring terminal (6) is installed outside the box body (1).
2. An optical inspection system for an AVI product as claimed in claim 1, wherein: AVI product clamping device is including two sets of tight subassemblies in top that the symmetry set up, every group the tight subassembly in top all include tight board (7) in top and push up tight cylinder (8), push up tight cylinder (8) tail end and install in box (1) inside wall, the flexible end in top tight cylinder (8) is connected with tight board (7) in top, two centre gripping AVI product (5) between tight board (7) in top.
3. An optical inspection system for an AVI product as claimed in claim 1, wherein: monitor terminal (6) includes shell body (9), shell body (9) surface mounting display screen (10), shell body (9) inner chamber installation main control board, set up central processing unit (11), image acquisition unit (12), image enhancement unit (13), contrast unit (14) and output unit (15) on the main control board, AVI camera (2), AVI camera (3) down are connected respectively to image acquisition unit (12) input, central processing unit (11) are connected through image enhancement unit (13) to image acquisition unit (12) output, central processing unit (11) are connected to contrast unit (14), backstage display terminal (16) is connected through output unit (15) in central processing unit (11).
4. The use method for realizing the optical detection system of the AVI product in claim 1 is characterized in that: the using method comprises the following steps:
A. firstly, fixing an AVI product between two tightening plates;
B. the upper AVI camera and the lower AVI camera respectively shoot front and back images of the AVI product;
C. the collected image is output to an image enhancement unit for enhancement processing;
D. the enhanced image is output to a comparison unit and compared with a preset image;
E. and the central processing unit outputs the acquired image and the comparison result to a background display terminal for reference of technicians.
5. The use method of the optical detection system of the AVI product of claim 4, wherein: the image enhancement unit enhancement method in the step C is as follows:
a. dividing pixels of an output image into a plurality of layers according to brightness values, wherein the brightness of each layer is different, arranging each layer from low to high according to the brightness values, and the boundary of the image in each layer is formed by a closed curve;
b. for the image layer with the lowest brightness and the image layer with the largest brightness, histogram equalization processing is carried out independently, then background noise is removed, and finally noise point removal is carried out;
c. removing noise points of the image layers between the lowest brightness and the highest brightness, removing background noise, and finally performing histogram equalization processing;
d. and finally merging all the processed image layers into an image after image enhancement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110106444.3A CN112730257A (en) | 2021-01-26 | 2021-01-26 | AVI product optical detection system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110106444.3A CN112730257A (en) | 2021-01-26 | 2021-01-26 | AVI product optical detection system and method |
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| CN112730257A true CN112730257A (en) | 2021-04-30 |
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| CN202110106444.3A Pending CN112730257A (en) | 2021-01-26 | 2021-01-26 | AVI product optical detection system and method |
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| KR20150018122A (en) * | 2013-08-09 | 2015-02-23 | (주)브이에스테크 | Automatic optical inspector for the flexible printed circuit board |
| JP2016065739A (en) * | 2014-09-24 | 2016-04-28 | 凸版印刷株式会社 | Defect inspection device and defect inspection method |
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Application publication date: 20210430 |