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Artificial board surface defect detection method

A defect detection and wood-based panel technology, applied in the directions of optical testing flaws/defects, measuring devices, material analysis by optical means, etc., can solve the problems of poor detection effect, low detection efficiency, high labor intensity, etc., and achieve high accuracy , the effect of high integrity and fast detection speed

Inactive Publication Date: 2020-07-14
GUANGXI WODEKEJI TECH
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AI Technical Summary

Problems solved by technology

In the manufacturing process of wood-based panels, it is necessary to detect the defects on its surface, and classify the wood-based panels according to the defects. The detection of early surface defects is realized by manual detection. The detection efficiency of this detection method is low, labor High intensity, strong subjectivity, poor detection effect
At present, with the development of science and technology, most of the detection of wood-based panel surface defects adopts automatic detection methods, and image acquisition equipment is used to collect and analyze the surface images of wood-based panels. Small defects cannot be detected, which affects the accuracy of plate defect detection

Method used

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Embodiment Construction

[0015] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0016] Such as figure 1 , figure 2 Shown, a kind of wood-based panel surface defect detection method of the present invention comprises the following steps:

[0017] 1) Use multiple high-definition scanners erected above and below the wood-based panel conveyor to continuously scan the surface of the wood-based panel, and store the scanned images on a computer connected to the high-definition scanner. The width direction of the wood-based panels is arranged in sequence, and the scanning area of ​​the high-definition scanner is set as a square area of ​​fixed size. After all the square areas are superimposed, they cover the width area of ​​the wood-based panel in the scanning area, and the adjacent square areas partially overlap;

[0018] 2) Define the positional relationship of multiple scanned images obtained by setting the coordinate syst...

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Abstract

The invention discloses an artificial board surface defect detection method. The method comprises the following steps of 1) continuously scanning the surface of the artificial board by using a plurality of high-definition scanners, storing an image obtained by scanning in a computer connected with the high-definition scanner, sequentially arranging the high-definition scanners in the width direction of the artificial board, setting scanning areas of the high-definition scanners to be square areas with fixed sizes, covering the width area of the artificial board in the scanning area after all square areas are overlapped and enabling the adjacent square areas to be partially overlapped, 2) defining a plurality of obtained position relations of the scanning images on a computer through a setcoordinate system, 3) performing defect processing and statistics of each image obtained by scanning, and 4) enabling the computer to output the type and the position of the defect in each scanning image. According to the defect detection method, the situations that defect detection is omitted, and small defects cannot be detected can be avoided, and the integrity and the accuracy of defect detection are improved.

Description

technical field [0001] The invention relates to the technical field of wood-based panel manufacturing, in particular to a method for detecting surface defects of a wood-based panel. Background technique [0002] Wood-based panels have good structure, convenient construction, low expansion and shrinkage, stable dimensions, uniform material than sawn timber, and are not easy to deform and crack. They are widely used in architectural decoration and furniture industries. In the manufacturing process of wood-based panels, it is necessary to detect the defects on its surface, and classify the wood-based panels according to the defects. The detection of early surface defects is realized by manual detection. The detection efficiency of this detection method is low, labor High intensity, strong subjectivity, poor detection effect. At present, with the development of science and technology, most of the detection of wood-based panel surface defects adopts automatic detection methods, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/95G01N21/88
CPCG01N21/8851G01N21/95G01N2021/8861G01N2021/8887G01N2201/10
Inventor 张德强
Owner GUANGXI WODEKEJI TECH
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