Block brick height online detection device based on vision

Abstract

The utility model provides a building block brick height on-line detection device based on vision, the on-line detection device is provided with a dust isolation box on a conveying mechanism, image information of the side face of a building block brick is collected through an industrial camera arranged in the dust isolation box, and the image information is processed through a detection processing system. The height of the building block brick is converted into an actual physical height so as to analyze whether the height of the building block brick meets the standard or not, and a processing analysis result is output to a display interface of the system, so that the building block brick which does not meet the standard can be conveniently processed; according to the detection device, the detection efficiency is greatly improved, and the consistency and the accuracy of detection results are well ensured.

Description

Technical Field

[0001] This utility model relates to a vision-based online detection device for the height of masonry blocks. Background Technology

[0002] In the construction industry, the production quality of masonry blocks directly affects the safety and durability of buildings. Among the key factors in assessing product quality is whether the height of the blocks meets standards. Traditionally, the height of masonry blocks has relied primarily on manual labor, with workers manually measuring the dimensions of each block. However, this method has several problems: firstly, manual inspection is inefficient and cannot meet the needs of large-scale production; secondly, manual measurement is susceptible to subjective factors, making it difficult to guarantee the consistency and accuracy of the results. This could lead to a large number of substandard blocks entering the construction market, thereby affecting building quality.

[0003] With the development of industrial automation and intelligent technologies, improving production efficiency and product quality has become an urgent need for modern manufacturing. In the field of brick block production, developing an automated method and device capable of adapting to online inspection is particularly important. However, there is currently a lack of mature solutions on the market specifically for online inspection of brick block heights. Utility Model Content

[0004] In view of this, the purpose of this utility model is to provide a vision-based online detection device for the height of masonry blocks to solve the above problems.

[0005] The present invention adopts the following solution:

[0006] This application provides a vision-based online height detection device for masonry blocks, used to detect the height of die-cast masonry blocks. The device includes a conveying mechanism for transporting the masonry blocks, a dustproof box mounted on the conveying mechanism, a light source positioned above and inside the dustproof box, an industrial camera positioned inside the dustproof box for capturing side images of the masonry blocks, and a detection and processing system electrically connected to the industrial camera. The detection and processing system processes the side image information of the masonry blocks and converts it into actual physical height, thereby analyzing whether the height of the masonry blocks meets a preset standard, and outputting the processing and analysis results to the system's display interface.

[0007] Furthermore, the conveying mechanism has multiple conveying channels; each conveying channel is equipped with the industrial camera; the dustproof box is built into the top of each conveying channel and the light source is installed thereon, and a light-blocking plate is installed between two conveying channels.

[0008] Furthermore, the light source is a strip-shaped visual lamp.

[0009] Furthermore, the length of the strip visual light is adapted to the length of the dust box along the conveying direction of the masonry block, and the width covers the entire width of the masonry block.

[0010] Furthermore, it also includes a sensor electrically connected to the light source for detecting whether the brickwork blocks have entered the dustproof box.

[0011] Furthermore, the conveying mechanism includes a frame, a conveyor roller rotatably mounted on the frame via bearings, a motor connected to the conveyor roller via a chain, and a conveyor belt surrounding the conveyor roller.

[0012] Furthermore, it also includes a recycling device electrically connected to the detection and processing system for recycling the non-compliant masonry blocks.

[0013] Furthermore, the image information includes geometric features, color, and texture; the preprocessing includes noise reduction, edge enhancement, and ROI cropping operations.

[0014] By adopting the above technical solution, the present invention can achieve the following technical effects:

[0015] This invention provides a vision-based online brick height detection device. A dust-proof box is installed on the conveying mechanism. An industrial camera inside the dust-proof box captures image information of the side of the brick. The image information is processed by a detection and processing system and converted into actual physical height. This analysis determines whether the height of the brick meets the standard. The processing and analysis results are output to the system's display interface, facilitating the processing of bricks that do not meet the standard. This detection device greatly improves detection efficiency and ensures the consistency and accuracy of the detection results. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of a vision-based online brick height detection device according to an embodiment of the present invention;

[0018] Figure 2 This is a left-view structural schematic diagram of a vision-based online brick height detection device according to an embodiment of this utility model;

[0019] Figure 3This is a schematic diagram of image contour detection for a vision-based online brick height detection device according to an embodiment of the present invention;

[0020] Figure 4 This is a flowchart of the detection method according to an embodiment of the present invention;

[0021] Icons: 1. Side beam; 2. Conveyor belt; 3. Dust box; 4. Block brick; 5. Protective plate; 6. Frame; 7. Motor mount; 8. Chain; 9. Strip vision light; 10. Light shield; 12. Motor; 13. Foot; 14. Bearing; 15. Industrial camera Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely represents selected embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0023] Example

[0024] Combination Figures 1 to 3 As shown, this embodiment provides a vision-based online height detection device for masonry blocks 4, used to detect the height of die-cast masonry blocks 4. It includes a conveying mechanism for transporting the masonry blocks 4, a dustproof box 3 mounted on the conveying mechanism, a light source positioned above and inside the dustproof box 3, an industrial camera 15 positioned inside the dustproof box 3 for capturing side images of the masonry blocks 4, and a detection processing system electrically connected to the industrial camera 15. The detection processing system processes the side image information of the masonry blocks 4 and converts it into actual physical height, thereby analyzing whether the height of the masonry blocks 4 meets a preset standard, and outputting the processing and analysis results to the system's display interface.

[0025] Specifically, in this embodiment, the conveying mechanism includes a frame 6, side beams 1 on both sides of the frame 6, protective plates 5 at both ends of the side beams 1, a conveyor roller rotatably mounted on the frame 6 via bearings 14, a motor 12 connected to the conveyor roller via a chain 8, and a conveyor belt 2 surrounding the conveyor roller; the motor 12 is fixed to the frame 6 via a motor base 7; and feet 13 are provided at the bottom of the frame 6. The motor 12 drives the conveyor belt 2 to move, thereby conveying the brick blocks 4 placed on the conveyor belt 2.

[0026] In this embodiment, the conveying mechanism has multiple conveying channels; each conveying channel is equipped with an industrial camera 15 on its side, the industrial camera 15 facing the side of the conveyed brick block 4. The dustproof box 3 is fixed at a certain position in the conveying channel, and a light source is installed above each conveying channel. A light-blocking plate 10 is provided between two conveying channels; the light-blocking plate 10 can prevent the light source from affecting the brick block 4 captured by other conveying channels; ensuring accurate image recognition between the brick blocks 4 in each conveying channel.

[0027] In this embodiment, the light source is a strip visual light 9, and the length of the strip visual light 9 is adapted to the length of the dust box 3 along the conveying direction of the block brick 4, and the width covers the entire width of the block brick 4. This can effectively prevent the block brick 4 from generating reflections or shadows that affect recognition as it passes through the dust box 3.

[0028] Preferably, the light source also includes a sensor electrically connected to the light source for detecting whether the brick block 4 enters the dust box 3, so as to avoid the light source being constantly turned on when no brick block 4 is being conveyed through, thus avoiding wasting resources.

[0029] Furthermore, the system also includes a recycling device electrically connected to the detection and processing system for recycling non-compliant brick blocks 4. The recycling device can be a guiding device, such as a movable guide rail located at the conveyor outlet of the conveying mechanism, which can be movably connected to any of the conveying channels to guide the non-compliant brick blocks 4 to the recycling channel of the next station. Alternatively, a mechanical gripper can be used to pick up the non-compliant brick blocks 4 and place them on the recycling channel of the next station for recycling. Here, no specific limitation is made on the recycling device.

[0030] The device has a dustproof box 3 on the conveying mechanism. An industrial camera 15 installed in the dustproof box 3 captures image information of the side of the brick block 4. The image information is preprocessed by the detection and processing system and converted into the actual physical height to analyze whether the height of the brick block 4 meets the standard. The processing and analysis results are output to the system's display interface, which facilitates the processing of brick blocks 4 that do not meet the standard, greatly improves the detection efficiency, and also ensures the consistency and accuracy of the detection results.

[0031] The following describes in detail the detection method for detecting the die-cast brick 4 using the aforementioned vision-based online height detection device for brick 4. Figure 4 As shown, it includes the following steps:

[0032] The brick block 4 is fed to the conveying mechanism for conveying. When the brick block 4 enters the dust box 3, the sensor detects the brick block 4 and the light source is turned on.

[0033] When the brick block 4 enters the working range of the industrial camera 15, the industrial camera 15 begins to collect image information of the side of the brick block 4, including information such as the geometric features, color, and texture of the brick block 4; then the collected image information is stored in the detection and processing system as a digital signal.

[0034] The detection and processing system preprocesses the image information, including noise reduction, edge enhancement, and ROI cropping. It performs edge detection on the acquired image to determine the top and bottom edge positions of the brick 4. The edge detection can be achieved through image processing algorithms. Then, based on the detected top and bottom edge pixel positions of the brick, the system combines the calibration data of the industrial camera 15 and converts it into the actual physical height.

[0035] Then the algorithm control program analyzes and processes the data, and finally outputs the processing results to the system software interface, and determines whether the height of the brick 4 meets the standard.

[0036] The standard-compliant bricks 4 continue to be conveyed to the next station, while the non-compliant bricks 4 are recycled by the recycling device.

[0037] The preprocessing described above aims to reduce environmental noise and other interference, and improve the accuracy of edge detection. It can use Gaussian filtering to remove image noise, and can use Canny or Sobel operators to extract edge information and boundary contour detection of bricks, and calculate height.

[0038] In this detection method, the industrial camera 15 captures real-time images of the brick block 4 through a high-resolution lens, ensuring clear image details and clearly displaying the shape characteristics of the brick. After grayscale conversion, noise reduction, and contrast adjustment, the edges of the brick become more distinct. The upper and lower edge contours of the brick block 4 are extracted using an algorithm, and the precise positions of the top and bottom edges are determined. Based on the extracted contour information, the height of the brick block 4 is calculated using known calibration parameters of the industrial camera 15 (such as camera focal length, pixel size, etc.) and the image coordinate system. By analyzing the contour distances above and below the brick, the actual height value of the brick can be obtained. Finally, after contour detection and height calculation, the height data of the brick block 4 is output and the result is transmitted to the system display interface.

[0039] By using this device to detect the height of the die-cast brick 4, the detection efficiency is greatly improved, and the consistency and accuracy of the detection results are well guaranteed.

[0040] The above are merely preferred embodiments of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions that fall within the scope of this utility model's concept are protected by this utility model.

[0041] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0042] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0043] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0044] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

Claims

1. A vision-based online height detection device for masonry blocks, used to detect the height of die-cast masonry blocks, characterized in that, The application relates to a detection system for detecting the height of a block brick, which comprises a conveying mechanism for conveying the block brick, a dustproof box arranged on the conveying mechanism, a light source arranged above the dustproof box, an industrial camera arranged in the dustproof box for shooting side image information of the block brick, and a detection processing system electrically connected with the industrial camera; the detection processing system is used for pre-processing the side image information of the block brick and converting the side image information into actual physical height, so that whether the height of the block brick meets preset standards is analyzed, and the analysis result is output to a display interface of the system.

2. The visual-based height detection device for the building block according to claim 1, wherein, The conveying mechanism has a plurality of conveying channels; each conveying channel is provided with the industrial camera; the light source is arranged above each conveying channel in the dustproof box, and a light shielding plate is arranged between two conveying channels.

3. The vision-based height detection device for the building block according to claim 2, wherein, The light source adopts a strip visual lamp.

4. The visual-based height detection device for the building block according to claim 3, wherein, The length of the strip visual lamp is matched with the length of the dustproof box along the conveying direction of the block brick, and the width of the strip visual lamp covers the whole width of the block brick.

5. The vision-based height detection device for the building block according to claim 1, wherein, A sensor electrically connected with the light source is further arranged, which is used for detecting whether the block brick enters the dustproof box.

6. The vision-based height detection device for online detection of height of a block according to claim 1, wherein, The conveying mechanism comprises a rack, a conveying roller rotatably arranged on the rack through a bearing, a motor connected with the conveying roller through a chain, and a conveying belt arranged around the conveying roller.

7. The vision-based height detection apparatus for building blocks according to any one of claims 1-6, wherein, A recycling device electrically connected with the detection processing system is further arranged, which is used for recycling the block brick not meeting the standards.

8. The vision-based height detection device for online detection of height of a block according to claim 7, wherein, The image information comprises geometric features, color and texture; the preprocessing comprises denoising, edge enhancement and ROI clipping operation.

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