IMPROVED YOLOV5-BASED DEEP LEARNING METHOD FOR DETECTING &#x0201c;HOT SPOT EFFECT&#x0201d; IN PHTOTVOLTAIC MODULES

Wang Daolei; Xiao Beicheng; Yao Congrong; Zhao Wenbin; Zhu Rui

doi:10.19912/j.0254-0096.tynxb.2023-0563

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Acta Energiae Solaris Sinica ›› 2024, Vol. 45 ›› Issue (8) : 342-348. DOI: 10.19912/j.0254-0096.tynxb.2023-0563

IMPROVED YOLOV5-BASED DEEP LEARNING METHOD FOR DETECTING “HOT SPOT EFFECT” IN PHTOTVOLTAIC MODULES

Wang Daolei, Xiao Beicheng, Yao Congrong, Zhao Wenbin, Zhu Rui

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Abstract

Aiming at the thermal spot detection of photovoltaic modules, an improved YOLOv5 based thermal spot detection algorithm was proposed. In this algorithm, Dilated block composed of cavity convolution is introduced to replace the original SPP block, which effectively reduces the heat spot information loss caused by pooling operation and improves the receptive field of the network. At the same time, the channel attention mechanism is added to the multi-scale detection process, which enhances the importance of the target region of hot spots and improves the detection performance of hot spots. A Lightweight block module composed of deep separable convolution is proposed, which effectively reduces the number of model parameters and improves the detection speed. The experimental results show that the improved YOLOv5 network can achieve fast and accurate detection of hot spots. Compared with the original algorithm, the A_P of this method is increased by 1.5% to 98.65%, and the detection speed is increased by 25% to 31 fps.

Key words

deep learning / target detection / photovoltaic modules / hot spot detection

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Wang Daolei, Xiao Beicheng, Yao Congrong, Zhao Wenbin, Zhu Rui. IMPROVED YOLOV5-BASED DEEP LEARNING METHOD FOR DETECTING “HOT SPOT EFFECT” IN PHTOTVOLTAIC MODULES[J]. Acta Energiae Solaris Sinica. 2024, 45(8): 342-348 https://doi.org/10.19912/j.0254-0096.tynxb.2023-0563

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