CN110877014A - Machine vision-based small-size product sorting line ambient light influence preventing device - Google Patents
Machine vision-based small-size product sorting line ambient light influence preventing device Download PDFInfo
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- CN110877014A CN110877014A CN201911031482.6A CN201911031482A CN110877014A CN 110877014 A CN110877014 A CN 110877014A CN 201911031482 A CN201911031482 A CN 201911031482A CN 110877014 A CN110877014 A CN 110877014A
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- machine vision
- sorting line
- light source
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- ambient light
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
- B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
- B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
- B07C5/02—Measures preceding sorting, e.g. arranging articles in a stream orientating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
- B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
- B07C5/36—Sorting apparatus characterised by the means used for distribution
- B07C5/361—Processing or control devices therefor, e.g. escort memory
- B07C5/362—Separating or distributor mechanisms
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Abstract
The invention discloses a machine vision-based device for preventing influence of environmental light on a sorting line of small-size products, which comprises a camera acquisition system, a transmission system and an in-place detection system; the camera acquisition system is arranged in the device shell and consists of an industrial camera and an annular light source, the industrial camera is arranged right above the annular light source, and the conveying system and the in-place detection system are respectively positioned on two sides of the device shell. The invention has the beneficial effects that: when the machine vision is used for a production line, random noise can be avoided when images are processed due to different illumination intensities in the case of complex lighting environment.
Description
Technical Field
The invention relates to a product sorting device, in particular to a device for preventing influence of ambient light on a small-size product sorting line based on machine vision, and belongs to the technical field of workpiece detection and sorting equipment.
Background
In one of the prior art, the "pin sorting machine based on machine vision" authorized by the fieldquake of hong technology limited company in Chengdu province converts the detected target into image signals through a detection device, transmits the image signals to a special computer operating system through an image acquisition system, converts the image signals into digital signals according to the information of pixel distribution, brightness, color and the like, performs various operations on the signals to extract the characteristics of the target, such as area, number, position and length, and outputs results according to preset allowability and other conditions, including size, angle, number, qualification or disqualification, existence or nonexistence, so as to realize the automatic identification function. In practical application, because the problem of a light source is not considered, a high-quality picture cannot be acquired, and problems occur in subsequent image processing. In view of the above, the present patent discloses a light-shielding device to solve the problem, and obtain high-quality images in the vision system to improve the accuracy of the vision system.
In the second prior art, the vision inspection system capable of automatically adjusting light intensity is granted by Yongxiang of Suzhou intelligent equipment Limited company, the image splicing module is used for combining pictures shot by the cameras into one frame in a multi-camera mode, the frame is not repeated, the boundary splicing is not obvious, a whole frame image in a larger area is output, the illumination condition is automatically adjusted according to the condition of on-site light, and the collection of an external light source is inaccurate due to the limitation of a light intensity detection device in the process of automatically adjusting the light intensity.
Disclosure of Invention
The invention aims to solve the problems and provide an ambient light influence preventing device for a sorting line of small-size products based on machine vision.
1. The invention realizes the purpose through the following technical scheme: a machine vision based device for preventing influence of environmental light on a small-size product sorting line comprises a camera acquisition system, a transmission system and an in-place detection system; the camera acquisition system is arranged in the device shell and consists of an industrial camera and an annular light source, the industrial camera consists of an industrial lens and a CMOS (complementary metal oxide semiconductor) camera, and the industrial camera is arranged right above the annular light source;
the conveying system consists of a conveying belt, a workpiece and a sensor, wherein the workpiece is placed on the conveying belt, and the sensor is positioned on one side of the conveying belt;
the in-place detection system is composed of an infrared sensor, a single chip microcomputer and a separation hydraulic cylinder device, the separation hydraulic cylinder device is located on one side of the conveying belt, and the separation hydraulic cylinder device and the in-place detection system are located on two sides of the device shell respectively.
As a still further scheme of the invention: the device shell is arranged above the conveyor belt, two ends of the device shell can be respectively provided with a closed door of a workpiece inlet and a workpiece outlet, and the closed door is provided with a cavity for accommodating the conveyor belt.
As a still further scheme of the invention: the upper end of the closed door is in driving connection with the crank through the connecting rod.
As a still further scheme of the invention: and the two sides of the closed door are provided with rollers, and the rollers are in rolling connection with the through groove walls arranged at the two ends of the device shell.
As a still further scheme of the invention: the annular light source is an intensity-adjustable light source.
The invention has the beneficial effects that: this prevent ambient light influence device based on machine vision small-size product sorting line reasonable in design, machine vision can be in the complicated occasion of daylighting environment when being used for the production line, avoid when gathering the image, because illumination intensity's difference, random noise appears when leading to handling the image, the influence of ambient light has been solved, can be according to the rhythm automatically regulated light-tight device's of conveying work piece the beat, the image acquisition is accurate, make things convenient for follow-up image processing, there is the automatic feeding function, the automatic separation function, can set up different light sources, make things convenient for the light source to adjust, needn't acquire external ambient light, the error influence of light intensity measuring device has been avoided.
Drawings
FIG. 1 is a schematic longitudinal sectional view of the present invention;
FIG. 2 is a schematic diagram of a transverse cross-sectional structure according to the present invention.
In the figure: 1. conveyor belt, 2, workpiece, 3, closing door, 4, device shell, 5, industrial camera, 6, annular light source, 7, sorting hydraulic cylinder device, 8, connecting rod, 9, crank, 10, roller and 11 and sensor.
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.
Referring to fig. 1-2, an apparatus for preventing influence of ambient light on a sorting line of small-sized products based on machine vision includes a camera collecting system, a conveying system, and an in-place detecting system.
The camera acquisition system is arranged in the device shell 4 and comprises an industrial camera 5 and an annular light source 6, images obtained by the industrial camera 5 are transmitted to an upper computer by adopting a USB3.0 interface, and the industrial camera comprises an industrial lens and a CMOS camera. The industrial camera 5 is arranged directly above the ring light source 6.
The conveying system is composed of a conveying belt 1, a workpiece 2 and a sensor 11, wherein the workpiece 2 is placed on the conveying belt 1, and the sensor 11 is positioned on one side of the conveying belt 1, so that the workpiece 2 can give an in-place signal to the conveying system after passing through the in-place sensor 11 from the conveying belt 1.
The in-place detection system is composed of an infrared sensor and a single chip microcomputer, the in-place detection system further comprises a sorting hydraulic cylinder device 7, the sorting hydraulic cylinder device 7 is located on one side of the conveyor belt 1, unqualified workpieces 2 are judged by screening, unqualified products can be pushed out, and the automatic sorting function is achieved.
The device obtains a certain position information of products to the conveyor belt through the infrared sensor, then transmits the position information to the single chip microcomputer, transmits the position information to the upper computer through the single chip microcomputer, obtains the position of each product on the conveyor belt through the in-place detection system, and calculates when each product reaches the camera vision area according to the known speed of the conveyor belt. Then the camera acquisition system acquires images, and the upper computer processes and analyzes the images to judge whether the product is qualified or not. Then the information is transmitted to the single chip microcomputer to control whether the sorting hydraulic cylinder acts or not and whether the product is pushed to an unqualified area or not.
Wherein the conveying system and the in-place detection system 5 are respectively positioned at two sides of the device shell 4.
Further, in the embodiment of the present invention, the device housing 4 is disposed above the conveyor belt 1, the device housing 4 may have a workpiece inlet and a workpiece outlet closing door 3 at two ends, respectively, and the closing door 3 leaves a cavity for accommodating the conveyor belt 1, so that the conveyor belt 1 can pass through the cavity, thereby conveying the workpiece 2 into the device housing 4.
Furthermore, in the embodiment of the present invention, the upper end of the sealing door 3 is in driving connection with the crank 9 through the connecting rod 8, so as to realize automatic opening and closing of the sealing door 3, and simultaneously, the workpiece inlet and the workpiece outlet provided at two ends of the device housing can be sealed, so as to realize the function of automatically sealing the measuring environment.
Furthermore, in the embodiment of the present invention, rollers 10 are installed on two sides of the sealing door 3, and the rollers 10 are in rolling connection with through groove walls formed at two ends of the device housing 4, so as to facilitate the up-and-down movement of the sealing door.
Furthermore, in the embodiment of the present invention, the annular light source 6 is an intensity-adjustable light source, and a controllable light source is used to replace ambient light, so that random noise generated when an image is processed due to different illumination intensities when the image is collected can be avoided in a situation where a lighting environment is complex.
The working principle is as follows: when the device for preventing the influence of the ambient light on the small-size product sorting line based on the machine vision is used, a workpiece 2 starts from a conveyor belt 1 and passes through an in-place sensor 11 to give an in-place signal to a conveying system, a sealing door 3 is opened, the workpiece 1 enters a detected area and is conveyed to the detected area, the sealing door 3 is closed, the workpiece 1 moves to the detected area, an annular light source 6 provides a light source, an industrial camera 5 starts to acquire images, the acquired images are processed to judge whether the acquired images are qualified products or not, when the product is discharged from the device, the sealing door 4 is automatically opened, the workpiece 2 moves to a sorting position, if the workpiece is the unqualified product, a sorting hydraulic cylinder device 7 pushes out the unqualified product, and if the workpiece.
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.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (5)
1. A machine vision based device for preventing influence of environmental light on a small-size product sorting line comprises a camera acquisition system, a transmission system and an in-place detection system; the method is characterized in that: the camera acquisition system is arranged in the device shell (4), the camera acquisition system is composed of an industrial camera (5) and an annular light source (6), the industrial camera is composed of an industrial lens and a CMOS (complementary metal oxide semiconductor) camera, and the industrial camera (5) is arranged right above the annular light source (6);
the conveying system is composed of a conveying belt (1), a workpiece (2) and a sensor (11), wherein the workpiece (2) is placed on the conveying belt (1), and the sensor (11) is positioned on one side of the conveying belt (1);
the in-place detection system is composed of an infrared sensor and a single chip microcomputer and is composed of a separation hydraulic cylinder device (7), the separation hydraulic cylinder device (7) is located on one side of the conveyor belt (1), and the separation hydraulic cylinder device (7) and the in-place detection system are respectively located on two sides of the device shell (4).
2. The machine vision-based device for preventing the influence of the ambient light on the sorting line of the small-sized products, according to claim 1, is characterized in that: the device shell (4) is arranged above the conveyor belt (1), two ends of the device shell (4) can be respectively provided with a closed door (3) of a workpiece inlet and a workpiece outlet, and a cavity for accommodating the conveyor belt is reserved in the closed door (3).
3. The machine vision-based device for preventing the influence of the ambient light on the sorting line of the small-sized products, according to claim 2, is characterized in that: the upper end of the closing door (3) is in driving connection with a crank (9) through a connecting rod (8).
4. The machine vision-based device for preventing the influence of the ambient light on the sorting line of the small-sized products, according to claim 3, is characterized in that: the two sides of the closed door (3) are provided with rollers (10), and the rollers (10) are in rolling connection with the through groove walls arranged at the two ends of the device shell (4).
5. The machine vision-based device for preventing the influence of the ambient light on the sorting line of the small-sized products, according to claim 1, is characterized in that: the annular light source (6) is an intensity-adjustable light source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911031482.6A CN110877014A (en) | 2019-10-28 | 2019-10-28 | Machine vision-based small-size product sorting line ambient light influence preventing device |
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| CN201911031482.6A CN110877014A (en) | 2019-10-28 | 2019-10-28 | Machine vision-based small-size product sorting line ambient light influence preventing device |
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| CN110877014A true CN110877014A (en) | 2020-03-13 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111992519A (en) * | 2020-08-10 | 2020-11-27 | 杭州蒲丰视觉检测科技有限公司 | Programmable digital machine vision detection platform and detection system |
| CN113798269A (en) * | 2021-09-17 | 2021-12-17 | 歙县四方能源再生利用有限公司 | Scrap steel intelligent machine vision classification management and control platform based on LIBS technology |
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| CN113798269A (en) * | 2021-09-17 | 2021-12-17 | 歙县四方能源再生利用有限公司 | Scrap steel intelligent machine vision classification management and control platform based on LIBS technology |
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Application publication date: 20200313 |
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