Solar panel defect real-time detection method based on infrared image

Abstract

The invention discloses a solar panel defect real-time detection method based on an infrared image. The solar panel defect real-time detection method comprises the following steps: (1) inputting the infrared image; (2) carrying out Gaussian filtering to eliminate image noise; (3) performing color space transformation on the denoised infrared image; (4) identifying a red area in the image accordingto the color and generating a binary image; (5) carrying out morphological filtering on the binary image; (6) finding out candidate defect regions in the binary image and calculating an area featureS of each candidate region; (7) marking each candidate detection area by using the minimum rectangular frame and calculating a rectangular shape feature L; (8) judging whether the candidate detectionarea is a defect area or not according to the area characteristics and the shape characteristics; and (9) outputting a detection result. Real-time defect real-time detection is performed on the imageaccording to different thermal image areas generated by normal heating and defect heating, and experiments prove that the method can effectively detect the abnormal area in the working process of thesolar panel and avoid false detection.

Description

technical field [0001] The invention relates to the technical field of image processing, in particular to a real-time detection method for solar panel defects based on infrared images. Background technique [0002] A solar panel is a device that assembles several solar cells in a certain way and converts solar radiation energy into light energy directly or indirectly through the photoelectric effect or photochemical effect. Structural components such as sheets and films. At present, the world's energy consumption mainly comes from fossil energy. The world's fossil energy consumption accounts for more than 80% of the total energy consumption, while my country's fossil energy consumption accounts for more than 90% of the total energy consumption. A large amount of fossil energy consumption has brought about extremely serious environmental problems, such as the greenhouse effect, photochemical pollution, acid rain, carbon monoxide and sulfur dioxide pollution. Moreover, the e...

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Problems solved by technology

Among them, photo-induced generation cannot directly collect the detected image, so it is difficult to meet the real-time requirements; inductively generated current cannot effectively extract real-time defect samples; although electroluminescence can be detected online, it needs to filter out visible light. The pre-breakdown defect of the PN junction of the battery in the defect cannot be detected, and the resolution of the defect image is also high; the contact resistance method needs to be warmed up to detect the defect of the solar panel, which takes a long time, and the solar panel needs to be touched during the measurement process. destructive to the product

Ultrasonic detection method has a single detection range, poor sensitivity and low accuracy

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