CN105445275B - Electronic device appearance detection system and electronic device appearance detection method - Google Patents
Electronic device appearance detection system and electronic device appearance detection method Download PDFInfo
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- CN105445275B CN105445275B CN201511002445.4A CN201511002445A CN105445275B CN 105445275 B CN105445275 B CN 105445275B CN 201511002445 A CN201511002445 A CN 201511002445A CN 105445275 B CN105445275 B CN 105445275B
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- 238000001514 detection method Methods 0.000 title claims abstract description 71
- 238000010191 image analysis Methods 0.000 claims abstract description 28
- 238000007599 discharging Methods 0.000 claims abstract description 8
- 238000007689 inspection Methods 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 claims 1
- 239000003990 capacitor Substances 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000007 visual effect Effects 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005286 illumination Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000008707 rearrangement Effects 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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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
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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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- 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)
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- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
- Length Measuring Devices By Optical Means (AREA)
- Analysing Materials By The Use Of Radiation (AREA)
Abstract
The invention discloses an electronic device appearance detection system and an electronic device appearance detection method, belongs to the field of electronic device appearance detection, and is designed for solving the problems of low detection efficiency and the like in the prior art. The electronic device appearance detection system comprises a feeding and discharging device, a rotating device, a photographing device and an image analysis device; the feeding and discharging device is used for conveying the detected electronic device to the detection position and conveying the detected electronic device away from the detection position; the rotating device is used for driving the detected electronic device to rotate by a set angle or continuously rotate so as to shoot the appearance of the electronic device; the photographing device is used for photographing the appearance picture or video information of the detected electronic device and sending the photographing result to the image analysis device; the image analysis device is used for judging whether the appearance of the detected electronic device is qualified or not according to the shooting result and displaying the judgment result. The electronic device appearance detection system and the detection method have the advantages of strong function, simple and convenient operation, high cost performance, low misjudgment rate and high detection efficiency.
Description
Technical Field
The invention relates to the field of electronic device appearance detection, in particular to an electronic device appearance detection system and an electronic device appearance detection method based on the electronic device appearance detection system.
Background
Appearance defects of various electronic devices including the tab capacitor can cause poor product performance and cause hidden quality troubles of the products. Taking a soldering lug capacitor as an example, the appearance defects mainly comprise a flat aluminum shell of the capacitor, a protrusion of the aluminum shell, a broken outer package, a burnt PIN PIN, a reverse sleeve, a skew lead-out terminal, material mixing and the like. In order to improve the product quality, it is necessary to inspect the appearance of the electronic device including the tab capacitance.
At present, the appearance detection mainly depends on manual detection, and has high error rate, low reliability of detection results and easy occurrence of missed detection and false detection. In a few detection methods for photographing by using cameras, various defects cannot be detected simultaneously, and multiple cameras are required to photograph at multiple angles, so that the detection efficiency is low and the production cost is high; the camera is fixed in position, so that the application range is narrow, and the detection equipment needs to be replaced when the product model is replaced.
Disclosure of Invention
The invention aims to provide an electronic device appearance detection system which solves the problems of low efficiency and the like caused by the requirement of multi-camera multi-angle shooting in the prior art.
The invention also aims to provide an electronic device appearance detection method with high detection efficiency and low misjudgment rate.
To achieve the purpose, on one hand, the invention adopts the following technical scheme:
an electronic device appearance detection system comprises a loading and unloading device, a rotating device, a photographing device and an image analysis device; the feeding and discharging device is used for conveying the detected electronic device to a detection position and conveying the detected electronic device away from the detection position; the rotating device is used for driving the detected electronic device to rotate by a set angle or continuously rotate so as to shoot the appearance of the detected electronic device; the photographing device is used for photographing the appearance picture or video information of the detected electronic device and sending the photographing result to the image analysis device; and the image analysis device is used for judging whether the appearance of the detected electronic device is qualified or not according to the shooting result and displaying the judgment result.
Particularly, the photographing device comprises a camera, a coaxial light source and a lifting plate for adjusting the height of the camera and/or the coaxial light source, and a linear bearing and a locking sleeve are arranged on the lifting plate; the camera signal is connected to the image analysis device; a guide shaft penetrates through the linear bearing, the guide shaft is fixed on the bracket, and the lifting plate can do linear motion along the guide shaft; a connecting column penetrates through the locking sleeve, and the end of the connecting column is fixed on the coaxial light source; after the distance between the coaxial light source and the lifting plate is adjusted to reach a set value, the connecting column and the locking sleeve are relatively fixed through the locking piece.
Further, the photographing device further comprises a camera mounting plate for fixing the camera and a camera adjusting plate for adjusting the position and/or angle of the camera, wherein the camera adjusting plate is connected to the lifting plate; the camera can move vertically and/or horizontally on the camera mounting plate.
Particularly, the rotating device comprises a bracket, an air cylinder arranged on the bracket, a moving guide shaft arranged in a bearing of the bracket in a penetrating way, a roller seat arranged at the end part of the moving guide shaft, and a roller arranged on the roller seat.
Furthermore, the rotating device also comprises a movable guide shaft retainer arranged between the support and the roller seat, and an elastic part is sleeved on the outer side of the movable guide shaft between the roller seat and the movable guide shaft retainer.
And furthermore, a limit screw is arranged between the roller seat and the movable guide shaft retainer.
Particularly, the feeding and discharging device is a conveyor belt.
In particular, the detection system further comprises a sorting device, and the sorting device is used for sorting out the unqualified detected electronic devices.
Particularly, the image analysis device comprises a mixing detection unit for judging whether the models of the detected electronic devices are matched, a polarity detection unit for judging whether the sleeving direction of the sleeve is correct, an angle detection unit for judging whether the angle of the terminal is qualified, a surface detection unit for judging whether the surface of the terminal is scorched, a sleeve damage detection unit for judging whether the appearance of the sleeve is qualified and a clamping detection unit; and the flattening detection unit judges whether the appearance of the sleeve is flattened or bulged according to the threshold value of the detected electronic device.
On the other hand, the invention adopts the following technical scheme:
an electronic device appearance detection method based on the detection system is characterized in that a photographing device is used for photographing appearance pictures or video information of the detected electronic device, and an image analysis device is used for detecting various appearance indexes of the detected electronic device at the same time so as to judge whether the appearance of the detected electronic device is qualified or not; the appearance indexes at least comprise whether the models are matched, whether the sleeve sleeving direction is correct, whether the terminal angle is qualified, whether the surface of the terminal is scorched, whether the appearance of the sleeve is damaged, and whether the appearance of the sleeve is flattened.
The electronic device appearance detection system comprises the rotating device, the photographing device and the image analysis device, wherein the rotating device drives the detected electronic device to rotate so as to photograph the appearance of the electronic device at all angles, the problems that in the prior art, multi-camera multi-angle photographing is needed to cause low efficiency and the like are solved, and the image analysis system is stronger in image analysis function, simpler and more convenient to operate, higher in cost performance and lower in misjudgment rate.
The electronic device appearance detection method of the invention utilizes the image analysis device to simultaneously detect each appearance index of the detected electronic device so as to judge whether the appearance is qualified or not, has high detection efficiency and low false judgment rate, and solves the problem of low detection efficiency caused by analyzing only one appearance index each time.
Drawings
FIG. 1 is a front view of an electronic device appearance inspection system provided in a preferred embodiment of the present invention;
fig. 2 is a schematic structural diagram of a photographing apparatus according to a preferred embodiment of the present invention;
fig. 3 is a second schematic structural diagram of a photographing apparatus according to a preferred embodiment of the present invention;
fig. 4 is a schematic structural diagram of a rotating apparatus according to a preferred embodiment of the present invention.
Labeled as:
1. a detected electronic device; 11. a camera; 12. a camera mounting plate; 13. a camera adjustment plate; 14. a coaxial light source; 15. a lifting plate; 16. a linear bearing; 17. a locking sleeve; 18. a locking member; 19. connecting columns; 20. a guide shaft; 21. a support; 22. a cylinder; 23. a bearing; 24. a movable guide shaft; 25. a roller seat; 26. a roller; 27. a movable guide shaft holder; 28. an elastic member; 29. a limit screw; 31. a lead screw; 32. a hand wheel; 33. an upper bracket; 34. a lower bracket; 191. and a limiting end.
Detailed Description
The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.
The preferred embodiment:
the preferred embodiment discloses an electronic device appearance detection system. As shown in fig. 1, the inspection system includes a loading/unloading device, a rotating device, a photographing device, and an image analysis device. The feeding and discharging device is used for conveying the electronic device 1 to be detected to a detection position and conveying the electronic device to be detected away from the detection position after detection is finished; the rotating device is used for driving the detected electronic device 1 to rotate by a set angle or continuously rotate so as to shoot the appearance of the electronic device; the photographing device is used for photographing the appearance picture or video information of the detected electronic device 1 and sending the photographing result (picture or video) to the image analysis device; the image analysis device is used for judging whether the appearance of the detected electronic device 1 is qualified or not according to the shooting result and displaying the judgment result.
The electronic device 1 is shot by the shooting device, the appearance picture or video information of the electronic device 1 is shot, and whether the appearance of the electronic device 1 is qualified or not is judged by the image analysis device according to the shooting result, so that the problem of high error rate of manual detection is solved. Detected electron device 1 can rotate the set angle or continuously rotate for the shooting, has solved among the prior art and has used a plurality of angles of a plurality of cameras to shoot and lead to inefficiency scheduling problem. Namely, an appearance detection visual system is formed based on a PC and a mechanical control structure, and the appearance of the detected electronic device 1 is detected by using visual detection software, so that the system is strong in function, simple and convenient to operate and high in cost performance. Whether the product appearance is qualified or not can be judged by displaying the result through the human-computer interface, and the detection precision is high and the misjudgment rate is low.
As shown in fig. 2 and 3, the photographing device includes a camera 11, a coaxial light source 14, and a lifting plate 15 for adjusting the heights of the camera 11 and the coaxial light source 14, wherein a linear bearing 16 and a locking sleeve 17 are arranged on the lifting plate 15; the camera 11 is signal connected to the image analysis means. A guide shaft 20 penetrates through the linear bearing 16, the guide shaft 20 is fixed on the bracket, and the lifting plate 15 can do linear motion along the guide shaft 20.
The specific manner of driving the lifting plate 15 to move is not limited, and a motor or a mechanical manner may be used. Preferably, the lifting plate 15 is driven to move linearly in the vertical direction by a lead screw 31 and a hand wheel 32. Specifically, the lifting plate 15 is disposed between the upper bracket 33 and the lower bracket 34, and both ends of the guide shaft 20 are fixed to the upper bracket 33 and the lower bracket 34, respectively. The end of the screw 31 is connected with the lifting plate 15 by screw thread, the hand wheel 32 is supported on the upper bracket 33, and the vertical movement of the lifting plate 15 is realized by rotating the hand wheel 32 to adjust the distance between the lifting plate 15 and the upper bracket 33.
A connecting column 19 penetrates through the locking sleeve 17, the end of the connecting column 19 is fixed on the coaxial light source 14, and the connecting column 19 is adjusted to protrude out of the lifting plate 15, so that the distance between the coaxial light source 14 and the lifting plate 15 is adjusted. That is, the length of the connection column 19 is the maximum distance that the coaxial light source 14 can be adjusted in the vertical direction. In order to prevent the connecting column 19 from being separated from the locking sleeve 17, a limiting head 191 may be provided at the end of the connecting column 19.
When the distance between the coaxial light source 14 and the lifting plate 15 reaches a set value, the connecting column 19 is locked by the locking piece 18, so that the connecting column 19 and the locking sleeve 17 are relatively fixed. In this structure, the coaxial light source 14 is fixed relative to the lifting plate 15 after each adjustment is completed, and can move up and down along with the lifting plate 15.
The camera 11 may be a camera or a video camera, and the camera 11 is signal-connected to the image analysis apparatus and transmits the shooting result to the image analysis apparatus. The coaxial light source 14 solves the problem that the stability of visual detection is affected by different illumination in a production workshop. The lifting assembly can adjust the height of the camera 11 to adapt to the detected electronic devices 1 with different models and specifications.
On the basis of the above structure, the photographing apparatus may further include a camera mounting plate 12 for fixing the camera 11 and a camera adjusting plate 13 for adjusting the position and/or angle of the camera 11. Wherein the camera adjusting plate 13 is connected to the lifting plate 15; the camera 11 can move vertically and/or horizontally on the camera mounting plate 12. That is, in addition to the lifting plate 15 being able to drive the camera 11 to move linearly in the vertical direction, the camera 11 is also able to move vertically along the rail on the camera mounting plate 12. In addition, the camera adjusting plate 13 can drive the camera 11 to perform front-back, left-right linear motion and axial rotation, so as to ensure that the camera 11 has as many shooting angles as possible.
As shown in fig. 4, the rotating device preferably includes a bracket 21, a cylinder 22 provided on the bracket 21, a movement guide shaft 24 inserted into a bearing 23 of the bracket 21, a roller mount 25 provided at an end of the movement guide shaft 24, and a roller 26 mounted on the roller mount 25. The movable guide shaft 24 can adjust the position of the roller seat 25 according to the width of the detected electronic device 1, and ensure that the roller 26 can abut against the outer wall of the detected electronic device 1.
The specific working mode of the rotating device is not limited, preferably, after the detected electronic device 1 reaches the shooting position, the stepping motor drives the driving wheel to rotate, and the driving wheel drives the detected electronic device 1 to rotate; the rotation angles of the stepping motors are consistent each time, and the total rotation angle is larger than 360 degrees, so that the detected electronic device 1 can be ensured to be completely rotated for one circle; at this time, three additional driven wheels also abut against the outer wall of the detected electronic device 1 to assist the detected electronic device 1 to rotate. The camera 11 starts to take a picture (the coaxial light source 14 is always on) while the motor starts to rotate, and the camera 11 finishes taking a picture when the motor stops rotating.
In addition to the above structure, the rotating device further includes a moving guide shaft holder 27 disposed between the bracket 21 and the roller base 25, and an elastic member 28 is sleeved on the outer side of the moving guide shaft 24 between the roller base 25 and the moving guide shaft holder 27. Preferably, a limit screw 29 is provided between the roller mount 25 and the moving guide shaft holder 27.
The specific structure of the loading and unloading device is not limited, and the loading and unloading device is preferably a conveyor belt. Reasonable structure, convenient use and wide application range, and does not need to replace the feeding and discharging device when changing the product varieties.
On the basis of the structure, the detection system can further comprise a sorting device, and the sorting device is used for sorting out unqualified detected electronic devices 1, so that higher automation is realized.
The image analysis device comprises a mixing detection unit for judging whether the model of the detected electronic device 1 is matched, a polarity detection unit for judging whether the sleeving direction of the sleeve is correct, an angle detection unit for judging whether the angle of the terminal is qualified, a surface detection unit for judging whether the surface of the terminal is scorched, a sleeve damage detection unit for judging whether the appearance of the sleeve is qualified and a clamping detection unit. The clamping detection unit judges whether clamping or protrusion exists in the appearance of the sleeve according to the threshold value of the detected electronic device 1. The above-described units may be implemented by software programs.
The electronic device appearance detection method based on the various detection systems is characterized in that an appearance picture or video information of the detected electronic device 1 is shot by a shooting device, and a shooting result is sent to an image analysis device; all the appearance indexes of the detected electronic device 1 are detected simultaneously through an image analysis device so as to judge whether the appearance is qualified or not. The appearance index includes, but is not limited to, whether the models are matched, whether the sleeve sleeving direction is correct, whether the terminal angle is qualified, whether the terminal surface is scorched, whether the sleeve appearance is damaged, and whether the sleeve appearance is flattened.
It should be noted that the foregoing is only a preferred embodiment of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (5)
1. The electronic device appearance detection system is characterized by comprising a feeding and discharging device, a rotating device, a photographing device and an image analysis device; wherein,
the feeding and discharging device is used for conveying the electronic device (1) to be detected to a detection position and conveying the electronic device to be detected away from the detection position;
the rotating device is used for driving the detected electronic device (1) to rotate by a set angle or continuously rotate so as to shoot the appearance of the electronic device;
the photographing device is used for photographing the appearance picture or video information of the detected electronic device (1) and sending the photographing result to the image analysis device;
the image analysis device is used for judging whether the appearance of the detected electronic device (1) is qualified or not according to the shooting result and displaying the judgment result;
the photographing device comprises a camera (11), a coaxial light source (14) and a lifting plate (15) for adjusting the height of the camera (11) and/or the coaxial light source (14), wherein a linear bearing (16) and a locking sleeve (17) are arranged on the lifting plate (15); the camera (11) is connected to the image analysis device in a signal manner; a guide shaft (20) penetrates through the linear bearing (16), the guide shaft (20) is fixed on the support, and the lifting plate (15) can do linear motion along the guide shaft (20);
a connecting column (19) penetrates through the locking sleeve (17), and the end of the connecting column (19) is fixed on the coaxial light source (14); after the distance between the coaxial light source (14) and the lifting plate (15) is adjusted to reach a set value, the connecting column (19) and the locking sleeve (17) are relatively fixed through a locking piece (18);
the photographing device further comprises a camera mounting plate (12) for fixing the camera (11) and a camera adjusting plate (13) for adjusting the position and/or angle of the camera (11), the camera adjusting plate (13) being connected to the lifting plate (15); the camera (11) can move vertically and/or horizontally on the camera mounting plate (12);
the rotating device comprises a bracket (21), an air cylinder (22) arranged on the bracket (21), a moving guide shaft (24) arranged in a bearing (23) of the bracket (21) in a penetrating way, a roller seat (25) arranged at the end part of the moving guide shaft (24), and a roller (26) arranged on the roller seat (25);
the rotating device also comprises a moving guide shaft retainer (27) arranged between the bracket (21) and the roller seat (25), and an elastic piece (28) is sleeved outside a moving guide shaft (24) between the roller seat (25) and the moving guide shaft retainer (27);
the detection system further comprises a sorting device, and the sorting device is used for sorting out the unqualified detected electronic devices (1).
2. The electronic device appearance inspection system according to claim 1, wherein a limit screw (29) is provided between the roller mount (25) and the moving guide shaft holder (27).
3. The electronic device appearance inspection system of claim 1, wherein the loading and unloading device is a conveyor belt.
4. The electronic device appearance detecting system according to claim 1, wherein the image analyzing apparatus includes a mixing detecting unit for determining whether the model of the detected electronic device (1) is matched, a polarity detecting unit for determining whether the sleeve sleeving direction is correct, an angle detecting unit for determining whether the terminal angle is qualified, a surface detecting unit for determining whether the terminal surface is scorched, and a sleeve breakage detecting unit and a pinch detecting unit for determining whether the sleeve appearance is qualified; the flattening detection unit judges whether the appearance of the sleeve is flattened or bulged according to the threshold value of the detected electronic device (1).
5. An electronic device appearance detection method based on the detection system according to any one of claims 1 to 4, characterized in that the method is to take an appearance picture or video information of the detected electronic device (1) by a photographing device, and an image analysis device simultaneously detects each appearance index of the detected electronic device (1) to determine whether the appearance thereof is qualified; the appearance indexes at least comprise whether the models are matched, whether the sleeve sleeving direction is correct, whether the terminal angle is qualified, whether the surface of the terminal is scorched, whether the appearance of the sleeve is damaged, and whether the appearance of the sleeve is flattened.
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CN110263190B (en) * | 2019-05-06 | 2023-10-20 | 菜鸟智能物流控股有限公司 | Data processing method, device, equipment and machine-readable medium |
CN112161929A (en) * | 2020-10-27 | 2021-01-01 | 宁波积微速成智能科技有限公司 | Circumferential weld detection device and method for frequency-doubling differential anti-interference specular reflection orthogonal imaging |
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CN113507555B (en) * | 2021-07-29 | 2022-06-17 | 唐山师范学院 | Computer image recognition device that can nimble multi-angle was adjusted |
CN115598062A (en) * | 2022-09-29 | 2023-01-13 | 苏州天准科技股份有限公司(Cn) | Detection device for 3C product |
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