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A firebrick measuring system based on machine vision

A machine vision, refractory brick technology, used in measuring devices, instruments, optical testing flaws/defects, etc., can solve problems such as affecting steel production, prone to misjudgment, and inability to build

Inactive Publication Date: 2018-11-27
SHANDONG IND TECH RES INST OF ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the production process of refractory bricks, the dust and smoke are relatively large, and the vibration and noise of the press are harmful to the physical and mental health of workers. Moreover, many defects are judged by workers based on experience, which is greatly influenced by subjectivity, and it is impossible to establish a unified evaluation standard.
In addition, in the process of mass production, this process not only consumes a lot of labor costs, but also the repetitive and monotonous measurement and observation work can easily cause personnel fatigue and misjudgment. Serious economic loss, even seriously affecting the production of steel

Method used

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  • A firebrick measuring system based on machine vision
  • A firebrick measuring system based on machine vision
  • A firebrick measuring system based on machine vision

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0078] Such as Figure 1-3 As shown, the refractory brick measuring device based on machine vision includes an image acquisition module 1, a control module 2, an image processing module 3 and a feedback module 4. The image acquisition module 1 has a base 11, and the base 11 is provided with a three-structure light laser sensor The guide rail 13 of 12, the stepper motor 15 drives the three-structured light laser sensor 12 to move through the coupling 16, the turntable 14 carrying the refractory brick is fixed on the base 11, and the three-structured light laser sensor 12 is aligned with the surface of the refractory brick to be tested and scanned 4 end faces of the refractory brick to be tested; the input end of the control module 2 is connected to the image acquisition module 1, and the output end of the control module 2 is respectively connected to the image processing module 3 and the feedback module 4, the feedback module 4 includes a travel switch, and executes the removal ...

Embodiment 2

[0145] A method for measuring the geometric dimensions of refractory bricks, comprising the following steps:

[0146] Step 1: Filter and denoise the original refractory brick color image to obtain the denoised image;

[0147] Step 2: In the denoised image, segment the refractory brick area to obtain the refractory brick image;

[0148] Step 3: Carry out morphological processing on the refractory brick image, make the edge of the refractory brick image transition smoothly, and remove the isolated point noise at the edge of the refractory brick image, and obtain the corrected refractory brick image;

[0149] Step 4: Use the Canny operator to perform edge detection on the corrected refractory brick image;

[0150] Step 5: use the Hough transform method and the K-means method to extract the straight line of the refractory brick shape to form the outer contour of the refractory brick, including the following steps:

[0151] Step 5-1: Consider a point (x, y) on the xy plane and a ...

Embodiment 3

[0181] In this embodiment, the refractory brick surface inclination angle is measured on the basis of threshold segmentation of the refractory brick image, and the acquisition of the refractory brick image, filtering and noise reduction processing and segmentation of the refractory brick area are the same as in embodiment 2.

[0182] A method for identifying scratches on the surface of refractory bricks based on frequency domain filtering enhancement, including the following steps:

[0183] Step 1: Filter and denoise the original refractory brick color image collected by the sensor to obtain the denoised image; in the denoised image, segment the refractory brick area to obtain the grayscale image of the refractory brick, such as Figure 4 shown;

[0184] Step 2: convert the grayscale image of refractory bricks into a color image of refractory bricks, perform channel decomposition on the color image of refractory bricks, separate the images of R, G, and B channels, and obtain t...

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Abstract

The invention discloses a firebrick measuring system based on machine vision, and the system includes a firebrick measuring device based on machine vision and a firebrick measuring method based on machine vision. An outline form geometry size of the firebrick can be detected without painting a measured end face, and surface scratch information, depth defect information and a surface inclination angle of the firebrick can be obtained by the firebrick measuring system based on the machine vision.

Description

technical field [0001] The invention relates to a fire resistance measurement system based on machine vision. technical background [0002] Refractory brick is a shaped refractory material fired with refractory clay or other refractory raw materials. It is mainly used for building smelting furnaces or ladles, and can withstand high temperatures of 1580°C-1770°C. On the production line of refractory bricks, before the products are off-line and packed, manual measurement with a tape measure has been used for a long time to judge the depth defects with the naked eye, such as missing corners, missing edges and pitted surfaces of refractory bricks. [0003] In the production process of refractory bricks, the dust and smoke are relatively large, and the vibration and noise of the press are harmful to the physical and mental health of workers. Moreover, many defects are judged by workers based on experience, which is greatly affected by subjective factors, and it is impossible to e...

Claims

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Application Information

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IPC IPC(8): G01N21/88G01B11/24G01B11/30
CPCG01B11/24G01B11/30G01N21/88
Inventor 曹衍龙张远松杨将新王敬孙安顺董献瑞
Owner SHANDONG IND TECH RES INST OF ZHEJIANG UNIV
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