Photovoltaic glass defect detecting method and device

A photovoltaic glass and defect detection technology, which is applied in the detection field, can solve the problems of low detection accuracy of photovoltaic glass, achieve the effects of improving detection accuracy and recognition accuracy, improving judgment accuracy, and reducing system false detection rate

Active Publication Date: 2018-02-27
BEIJING LUSTER LIGHTTECH
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Problems solved by technology

[0005] This application provides a defect detection method and device for photovo...

Method used

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  • Photovoltaic glass defect detecting method and device
  • Photovoltaic glass defect detecting method and device
  • Photovoltaic glass defect detecting method and device

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Embodiment Construction

[0057] see figure 1 , which provides a flowchart of a photovoltaic glass defect detection method for this application. Such as figure 1 As shown, the method includes:

[0058] Step 101, create a Gabor filter.

[0059] Gabor filter is a linear filter used for edge extraction. Gabor filters are great for expression and separation. In the spatial domain, the Gabor filter is a Gaussian function modulated by a sinusoidal plane wave. The Gabor filter can be split into a real part filter and an imaginary part filter. The real part filter is used to detect texture low-frequency components, and the imaginary part filter is used to detect texture high-frequency components.

[0060] Step 102, acquiring a visual collection image of the photovoltaic glass to be inspected.

[0061]Solar photovoltaic modules are composed of low-iron glass, solar cells, film, back glass, special metal wires, etc. The solar cells are sealed between a piece of low-iron glass and a piece of back glass thro...

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Abstract

The invention discloses a photovoltaic glass defect detecting method and device, and relates to the technical field of detection. The problem that the defect detection precision of photovoltaic glassis low is solved. The method mainly comprises the steps that a Gabor filter is created; a vision acquisition image of to-be-detected photovoltaic glass is obtained; a median filtering image of the vision acquisition image is calculated; a texture filtering image of the median filtering image is calculated; a background estimation image of the median filtering image is calculated according to a preset mean filter template; an interference removing image of the to-be-detected photovoltaic glass is calculated, wherein the interference removing image is obtained by calculating a difference of thetexture filtering image and the background estimation image; a binary image of the interference removing image is generated according to a preset gray threshold value; if a pixel value of a pixel point in the binary image is larger than a preset pixel value, and the position of the vision acquisition image corresponding to the pixel point is determined as a defect position. The method and device are mainly applied to the process of detecting the photovoltaic glass defect.

Description

technical field [0001] The present application relates to the technical field of detection, and in particular to a defect detection method and device for photovoltaic glass. Background technique [0002] Solar photovoltaic modules are composed of low-iron glass, solar cells, film, back glass, special metal wires, etc. The solar cells are sealed between a piece of low-iron glass and a piece of back glass through film, which is the most innovative building Use high-tech glass products. Photovoltaic glass is an important auxiliary material in the production process of photovoltaic modules, which can effectively protect photovoltaic modules from the impact of external objects. The production stage of photovoltaic glass needs to be tempered, and there may be defects such as bubbles, stones or inclusions in its interior and surface. If there is a defect in the photovoltaic glass, it may cause the photovoltaic glass to explode, resulting in waste of resources and potential safety...

Claims

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Application Information

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IPC IPC(8): G06T7/00G06T7/40G06T5/10
CPCG06T5/10G06T7/0004G06T7/40G06T2207/20032G06T2207/20081G06T2207/30168
Inventor 赵云涛姚毅包振健
Owner BEIJING LUSTER LIGHTTECH
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