CN114964000A - A detection and correction device based on machine vision - Google Patents

Abstract

The invention provides a detection and correction device based on machine vision, which comprises a box body, a vision module, a control mechanism and a conveying clamping mechanism arranged at the top of the box body and used for conveying products, wherein the vision module is used for detecting and tracking the angle position of the products on the conveying clamping mechanism, editing operation instruction information by a computer and sending an instruction by a central processing unit to enable the vision module to take a picture, when the vision module takes a picture, the angle change of the currently detected products and the digital codes on the products are obtained, the vision module transmits the information to the central processing unit again by an exchanger, the central processing unit controls the adjustment mechanism to carry out multi-angle adjustment and correction, and after adjustment and correction, the information is transmitted to a storage device for storage, so that the next time of direct shooting and detection of the products is facilitated, and the correction work of the vision module is effectively carried out, the working efficiency of shooting detection is improved.

Description

A detection and correction device based on machine vision

technical field

The invention relates to the technical field of machine vision, in particular to a detection and correction device based on machine vision.

Background technique

Machine vision is a branch of artificial intelligence that is developing rapidly. In short, machine vision is to use machines instead of human eyes to make measurements and judgments. Machine vision systems use machine vision products, namely image capture devices, which are divided into CMOS and CCD. , convert the captured target into an image signal, transmit it to a dedicated image processing system, obtain the morphological information of the captured target, and convert it into a digital signal according to pixel distribution, brightness, color and other information; the image system performs various operations on these signals. To extract the characteristics of the target, and then control the equipment action on site according to the result of the judgment;

Machine vision is to install a camera on the device, obtain the characteristics of the object by taking pictures and store it to the computer. After the computer performs relevant processing on the feature data, it matches the information such as the geometric shape and size of the target object stored on the computer. After the product is produced, the specific coordinate position of the target object in the coordinate system is calculated according to the proportional relationship between pixels and coordinates. After machine vision and mechanical installation, it is necessary to obtain high-precision positioning information according to the shape of the product, and adjust and correct it. Most of the existing machine vision is fixedly installed on the bracket. During long-term use, it is easy to shake, causing the machine vision to tilt, thereby reducing the efficiency of shooting and detection. Therefore, a machine vision-based method is proposed. Check the calibration device.

SUMMARY OF THE INVENTION

In view of this, the embodiments of the present invention hope to provide a detection and correction device based on machine vision, so as to solve or alleviate the technical problems existing in the prior art, and at least provide a beneficial option.

The technical solution of the embodiment of the present invention is realized as follows: a detection and correction device based on machine vision, including a box body, a vision module and a control mechanism, and a conveying and clamping mechanism arranged on the top of the box body for transporting products and an adjustment mechanism arranged on the top of the conveying clamping mechanism for correcting and adjusting the vision module, the control mechanism includes a computer, a switch, a central processing unit and a storage, and there is an electrical connection between the storage and the vision module. The visual module, the central processing unit, and the computer are electrically connected to the switch, respectively.

Preferably: the conveying and clamping mechanism includes a U-shaped plate fixedly installed on the top of the box, two sides of the inner wall of the U-shaped plate are fixedly installed with conveyor belts through shafts, and one side of the U-shaped plate is fixed A first motor is installed, the output end of the first motor is fixedly connected to the conveyor belt through the U-shaped plate, and the first motor is electrically connected to the central processing unit.

Preferably, the conveying and clamping mechanism further comprises a first electric telescopic rod fixedly installed on both sides of the inner wall of the U-shaped plate, the output end of the first electric telescopic rod is fixedly installed with a clamping plate, and the first electric telescopic rod is fixedly installed with a clamping plate. The electric telescopic rod is electrically connected with the central processing unit.

Preferably, a plurality of dampers are fixedly installed in sequence from left to right on the side of the clamping plate away from the first electric telescopic rod, and a casing is fixedly installed at the output end of the dampers, and the A transmission belt is fixedly installed inside through the shaft, the outer side wall of the damper is sleeved with a spring, one end of the spring is fixedly connected to one side of the casing, and the end of the spring away from the casing is connected to the other end. One side of the clamping plate is fixedly connected.

Preferably: the adjustment mechanism includes a chute plate fixedly installed on both sides of the top of the U-shaped plate, a second electric telescopic rod is fixedly installed at the bottom of the inner wall of the chute plate, and the second electric telescopic rod is connected to the The central processing units are electrically connected, a sliding plate is connected to the inside of the chute plate in a sliding fit, and both sides of the bottom of the sliding plate are fixedly connected to the output end of the second electric telescopic rod.

Preferably, an electric sliding rail is fixedly installed on the bottom of the sliding plate, a first sliding block is connected to the surface of the electric sliding rail in a sliding fit, and a U-shaped shell is fixedly installed at the bottom of the first sliding block. The rail is electrically connected with the central processing unit.

Preferably, a rotating rod is fixedly installed on both sides of the inner wall of the U-shaped shell through bearings, and a connecting block and a first gear are respectively fixedly installed on the outer side wall of the rotating rod, and the first gear is located at one side of the connecting block. side, the bottom of the connection block is fixedly connected with the top of the vision module, the inner side of the U-shaped shell is fixedly installed with a second motor, and the output end of the second motor is fixedly installed with a second gear, The second gear and the first gear are meshed and connected, the second motor and the central processing unit are electrically connected, and a circular chute is opened on the other side of the U-shaped shell, A second sliding block is connected in sliding fit inside the circular chute, and one side of the second sliding block is fixedly connected with one side of the connecting block.

Due to the adoption of the above technical solutions, the embodiments of the present invention have the following advantages:

1. The present invention realizes the angular position detection and tracking detection of the products on the conveying and clamping mechanism through the vision module, edits the operation instruction information through the computer, and sends the instructions through the central processing unit to let the vision module take pictures. After the module takes a picture, it obtains the currently detected product angle change and the digital code on the product. The vision module transmits the information to the central processing unit through the switch again, and the central processing unit controls the adjustment mechanism to perform multi-angle adjustment and correction work. The information is transmitted to the storage for storage, which is convenient for the next time the product is directly photographed and inspected, the visual module is effectively corrected, and the work efficiency of the photographing inspection is improved.

2. In the present invention, when the product on the conveying and clamping mechanism is photographed through the vision module, the vision module transmits the information to the central processing unit through the switch, and the central processing unit simultaneously controls the second electric telescopic rod, the electric slide rail and the second motor Start, the second gear, the first gear and the rotating rod are driven to rotate by the second motor, and the second slider on one side of the connecting block is linked to slide in the circular chute, and the sliding plate is driven to cooperate and slide in the chute plate. , Effectively adjust and correct the height of the vision module up and down, drive the first slider to slide on the surface of the electric slide rail through the electric slide rail, effectively adjust the left and right of the vision module, and drive the slide plate through the second electric telescopic rod. The sliding groove plate cooperates and slides to effectively adjust and correct the height of the visual module, which is convenient for the visual module to perform multi-angle shooting and detection, and improves the detection stability of the visual module.

The above summary is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the present invention will become apparent by reference to the accompanying drawings and the following detailed description.

Description of drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only For some embodiments of the present application, for those of ordinary skill in the art, other drawings can also be obtained according to these drawings without any creative effort.

Fig. 1 is the overall structure diagram of the present invention;

Fig. 2 is the cross-sectional three-dimensional structure diagram of the U-shaped plate of the present invention;

Fig. 3 is the partial three-dimensional structure diagram of the chute plate of the present invention;

Fig. 4 is the sectional three-dimensional structure diagram of the U-shaped shell of the present invention;

Fig. 5 is the enlarged three-dimensional structure diagram of A place in Fig. 2 of the present invention;

FIG. 6 is a plan flow structure diagram of the present invention.

Reference numerals: 1. Box body; 2. Second slider; 3. Vision module; 4. U-shaped plate; 5. Conveyor belt; 6. First motor; 7. First electric telescopic rod; 8. Clip Holding plate; 9. Damper; 10. Housing; 11. Conveyor belt; 12. Spring; 13. Chute plate; 14. Second electric telescopic rod; 15. Skateboard; 16. Electric slide rail; 17. First Slider; 18, U-shaped shell; 19, rotating rod; 20, first gear; 21, connecting block; 22, second motor; 23, second gear; 24, circular chute.

Detailed ways

In the following, only certain exemplary embodiments are briefly described. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. Accordingly, the drawings and description are to be regarded as illustrative in nature and not restrictive.

The embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

As shown in Figures 1-6, an embodiment of the present invention provides a detection and correction device based on machine vision, including a box body 1, a vision module 3 and a control mechanism, and a conveying device disposed on the top of the box body 1 for transporting products The clamping mechanism and the adjustment mechanism arranged on the top of the conveying clamping mechanism for correcting and adjusting the vision module 3, the control mechanism includes a computer, a switch, a central processing unit and a storage, and the storage and the vision module 3 are electrically connected, The visual module 3, the central processing unit, and the computer are electrically connected to the switch respectively; the angular position detection and tracking detection of the products on the conveying and clamping mechanism are realized through the visual module 3, and the operation instruction information is edited by the computer, and the Send an instruction through the central processing unit to let the vision module 3 take a picture. After the vision module 3 takes a picture, it obtains the currently detected product angle change and the digital code on the product, and the vision module 3 transmits the information to the central processing unit through the switch again. , the central processing unit controls the adjustment mechanism to perform multi-angle adjustment and correction work. After adjustment and correction, the information is transmitted to the storage for storage, which is convenient for the next time to directly shoot and detect the product, and realize the correction purpose of the vision module 3. Improve the efficiency of shooting detection.

In this embodiment, specifically: the conveying and clamping mechanism includes a U-shaped plate 4 fixedly installed on the top of the box body 1, and the two sides of the inner wall of the U-shaped plate 4 are fixedly installed with conveyor belts 5 through shafts. A first motor 6 is fixedly installed on one side, the output end of the first motor 6 is fixedly connected to the conveyor belt 5 through the U-shaped plate 4, and the first motor 6 is electrically connected with the central processing unit; driven by the first motor 6 The conveyor belt 5 rotates in the U-shaped plate 4 for conveying the product. When the vision module 3 captures the product on the conveyor belt 5, the vision module 3 transmits the information to the central processing unit through the switch. The processor controls the first motor 6 to stop running, so as to facilitate post-correction and adjustment work.

In this embodiment, specifically: the conveying and clamping mechanism further includes a first electric telescopic rod 7 fixedly installed on both sides of the inner wall of the U-shaped plate 4, the output end of the first electric telescopic rod 7 is fixedly installed with a clamping plate 8, and the first electric telescopic rod 7 is fixedly installed with a clamping plate 8. An electric telescopic rod 7 is electrically connected to the central processing unit. A plurality of dampers 9 are fixedly installed on the side of the clamping plate 8 away from the first electric telescopic rod 7 in sequence from left to right, and the output end of the dampers 9 is fixed. The casing 10 is installed, the inside of the casing 10 is fixedly installed with the transmission belt 11 through the shaft, the outer side wall of the damper 9 is sleeved with a spring 12, one end of the spring 12 is fixedly connected with one side of the casing 10, and the spring 12 is far away One end of the housing 10 is fixedly connected to one side of the clamping plate 8; when the product on the conveyor belt 5 is photographed through the vision module 3, the vision module 3 transmits the information to the central processing unit through the switch, and the central processing unit controls the first An electric telescopic rod 7 is activated to drive the clamping plate 8 and the casing 10 to expand and contract forward, so that the conveyor belt 11 is in contact with the product on the conveyor belt 5. When the conveyor belt 11 is in contact with the product, the damper 9 and the spring 12 is telescopic to achieve the purpose of product conveying and clamping, which is convenient for buffering and clamping of products of different sizes, and improves the conveying stability of the product.

In this embodiment, specifically: the adjustment mechanism includes a chute plate 13 fixedly installed on both sides of the top of the U-shaped plate 4 , a second electric telescopic rod 14 is fixedly installed at the bottom of the inner wall of the chute plate 13 , and the second electric telescopic rod 14 It is electrically connected with the central processing unit, the inside of the chute plate 13 is slidably connected with a sliding plate 15, and the bottom sides of the sliding plate 15 are fixedly connected with the output end of the second electric telescopic rod 14; When clamping the product on the mechanism, the visual module 3 transmits the information to the central processing unit through the switch, and the central processing unit controls the second electric telescopic rod 14 to start, and drives the sliding plate 15 to cooperate and slide in the chute plate 13 to realize the visual model. The purpose of the vertical height adjustment and correction of the group 3 is to improve the shooting and detection angle of the visual module 3 for the vertical height correction.

In this embodiment, specifically: an electric slide rail 16 is fixedly installed on the bottom of the sliding plate 15 , a first slider 17 is slidably connected to the surface of the electric slide rail 16 , and a U-shaped shell 18 is fixedly installed at the bottom of the first slide block 17 , the electric sliding rail 16 is electrically connected with the central processing unit; when the product on the conveying and clamping mechanism is photographed through the visual module 3, the visual module 3 transmits the information to the central processing unit through the switch, and the central processing unit controls the motor The slide rail 16 is activated to drive the first slider 17 to cooperate and slide on the surface of the electric slide rail 16 , so as to achieve the purpose of left and right adjustment and correction of the vision module 3 , and improve the left and right correction, shooting and detection angle of the vision module 3 .

In this embodiment, specifically: the two sides of the inner wall of the U-shaped shell 18 are fixedly installed with the rotating rod 19 through the bearings, and the outer side wall of the rotating rod 19 is fixedly installed with the connecting block 21 and the first gear 20 respectively, and the first gear 20 is located at the connection On one side of the block 21, the bottom of the connection block 21 is fixedly connected with the top of the vision module 3, the inner side of the U-shaped shell 18 is fixedly installed with a second motor 22, and the output end of the second motor 22 is fixedly installed with a second gear 23. The second gear 23 is meshed with the first gear 20, and the second motor 22 is electrically connected to the central processing unit. The other side of the U-shaped shell 18 is provided with a circular chute 24. The inside of the groove 24 is slidably connected with the second slider 2, and one side of the second slider 2 is fixedly connected with one side of the connecting block 21; The group 3 transmits the information to the central processing unit through the switch, and the central processing unit controls the second motor 22 to start, drives the second gear 23, the first gear 20 and the rotating rod 19 to rotate, and links the second slide on the side of the connection block 21. The block 2 slides in the circular chute 24 to achieve the purpose of adjusting and correcting the inclination of the vision module 3 , thereby improving the stability of the inclination correction, shooting and detection angle of view and the inclination adjustment of the vision module 3 .

When the present invention is in operation, the angular position detection and tracking detection of the products on the conveying and clamping mechanism are realized through the vision module 3, the operation instruction information is edited through the computer, and instructions are sent through the central processing unit to make the vision module 3 take pictures. , when the vision module 3 takes a picture, obtain the currently detected product angle change and the digital code on the product, the vision module 3 transmits the information to the central processing unit through the switch again, and the central processing unit controls the adjustment mechanism to perform multi-angle adjustment and correction work , After adjusting and correcting, the information will be transferred to the storage for storage, which is convenient for the next time to directly photograph and test the product, realize the correction purpose of the vision module 3, and improve the work efficiency of photographing and testing;

The conveyor belt 5 is driven by the first motor 6 to rotate in the U-shaped plate 4 for conveying the product. When the vision module 3 captures the product on the conveyor belt 5, the vision module 3 transmits the information through the switch. To the central processing unit, the central processing unit controls the first motor 6 to stop running, which is convenient for post-correction and adjustment work. When the product on the conveyor belt 5 is photographed through the visual module 3, the visual module 3 transmits the information to the central processing unit through the switch. The central processing unit controls the first electric telescopic rod 7 to start, and drives the clamping plate 8 and the housing 10 to expand and contract forward, so that the conveyor belt 11 contacts the product on the conveyor belt 5 when it is in contact. The damper 9 and the spring 12 are stretched to achieve the purpose of product conveying and clamping, which is convenient for buffering and clamping of products of different sizes, and improves the conveying stability of the product;

When the product on the conveying and clamping mechanism is photographed through the vision module 3, the vision module 3 transmits the information to the central processing unit through the switch, and the central processing unit simultaneously controls the second electric telescopic rod 14, the electric slide rail 16 and the second motor 22 is started, the second motor 22 drives the second gear 23, the first gear 20 and the rotating rod 19 to rotate, and the second slider 2 on the side of the connecting block 21 slides in the circular chute 24, driving the sliding plate 15. Cooperate and slide in the chute plate 13 to effectively adjust and correct the height of the vision module 3. The first slider 17 is driven by the electric sliding rail 16 to cooperate and slide on the surface of the electric sliding rail 16, which effectively adjusts the visual module. 3. Carry out left and right adjustment and calibration, and drive the sliding plate 15 to cooperate and slide in the chute plate 13 through the second electric telescopic rod 14, which effectively adjusts and corrects the upper and lower heights of the vision module 3, which is convenient for the vision module 3 to perform multi-angle shooting and detection, and improve the performance of the visual module 3. The detection stability of vision module 3 is improved.

The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited to this. Any person skilled in the art who is familiar with the technical field disclosed in the present invention can easily think of various changes or Replacement, these should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims (10)

1. A detection and correction device based on machine vision, comprising a box body (1), a vision module (3) and a control mechanism, and a conveying and clamping mechanism arranged on the top of the box body (1) for transporting products and An adjustment mechanism arranged on the top of the conveying and clamping mechanism for correcting and adjusting the vision module (3), characterized in that: the control mechanism includes a computer, a switch, a central processing unit and a storage; The storage is electrically connected to the vision module (3), and the vision module (3), the central processing unit, and the computer are electrically connected to the switch, respectively. 2. A machine vision-based detection and correction device according to claim 1, characterized in that: the conveying and clamping mechanism comprises a U-shaped plate (4) fixedly installed on the top of the box body (1), so that the Conveyor belts (5) are fixedly installed on both sides of the inner wall of the U-shaped plate (4) through shaft rods. 3. A machine vision-based detection and correction device according to claim 2, characterized in that: a first motor (6) is fixedly installed on one side of the U-shaped plate (4), and the first motor ( The output end of 6) is fixedly connected to the conveyor belt (5) through the U-shaped plate (4), and the first motor (6) is electrically connected to the central processing unit. 4. A machine vision-based detection and correction device according to claim 3, characterized in that: the conveying and clamping mechanism further comprises a first electric telescopic device fixedly installed on both sides of the inner wall of the U-shaped plate (4). A rod (7), the output end of the first electric telescopic rod (7) is fixedly installed with a clamping plate (8), and the first electric telescopic rod (7) is electrically connected with the central processing unit. 5. A machine vision-based detection and correction device according to claim 4, characterized in that: the side of the clamping plate (8) away from the first electric telescopic rod (7) is in order from left to right A plurality of dampers (9) are fixedly installed, an output end of the dampers (9) is fixedly installed with a casing (10), and a transmission belt (11) is fixedly installed inside the casing (10) through a shaft . 6 . The machine vision-based detection and correction device according to claim 5 , wherein a spring ( 12 ) is sleeved on the outer side wall of the damper ( 9 ), and one end of the spring ( 12 ) is connected to the One side of the housing (10) is fixedly connected, and one end of the spring (12) away from the housing (10) is fixedly connected to one side of the clamping plate (8). 7. A machine vision-based detection and correction device according to claim 6, characterized in that: the adjustment mechanism comprises chute plates (13) fixedly installed on both sides of the top of the U-shaped plate (4), A second electric telescopic rod (14) is fixedly installed at the bottom of the inner wall of the chute plate (13), and the second electric telescopic rod (14) is electrically connected with the central processing unit. 8 . The machine vision-based detection and correction device according to claim 7 , wherein a sliding plate ( 15 ) is connected to the inside of the chute plate ( 13 ) in a sliding fit, and the bottom of the sliding plate ( 15 ) is connected with a sliding plate ( 15 ). 9 . Both sides are fixedly connected with the output end of the second electric telescopic rod (14). 9. The machine vision-based detection and correction device according to claim 8, characterized in that: an electric sliding rail (16) is fixedly installed at the bottom of the sliding plate (15), and the electric sliding rail (16) has an electric sliding rail (16). A first sliding block (17) is connected to the surface in a sliding fit, and a U-shaped shell (18) is fixedly installed at the bottom of the first sliding block (17), and a space between the electric sliding rail (16) and the central processing unit is Electrical connection. 10. A machine vision-based detection and correction device according to claim 9, characterized in that: rotating rods (19) are fixedly installed on both sides of the inner wall of the U-shaped shell (18) through bearings, and the rotating rods A connecting block (21) and a first gear (20) are respectively fixedly installed on the outer side wall of (19), the first gear (20) is located on one side of the connecting block (21), and the connecting block (21) The bottom is fixedly connected with the top of the visual module (3); A second motor (22) is fixedly installed on the inner side of the U-shaped shell (18), and a second gear (23) is fixedly installed at the output end of the second motor (22). The second gear (23) ) is in meshing connection with the first gear (20), and the second motor (22) is electrically connected with the central processing unit; A circular chute (24) is opened on the other side of the inside of the U-shaped shell (18), and a second sliding block (2) is connected to the inside of the circular chute (24) in a sliding fit. One side of the sliding block (2) is fixedly connected with one side of the connecting block (21).

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