Abstract:Aiming at the problems of low illumination, large change of target scale, serious occlusion between targets, difficult feature extraction of existing target detection network, poor detection effect, etc. in complex mine environment, an improved S3-YOLOv5s mine personnel protection equipment detection algorithm is proposed. A simple, parameter free attention module (SimAM) is added to the backbone network to improve the network""s feature extraction capability; Scale Equalizing Pyramid Convolution (SEPC) is introduced to strengthen multi-scale feature fusion; Finally, SIoU is used as the frame regression loss function and K-means++algorithm is used for prior anchor frame clustering to improve the frame detection accuracy. The experiment shows that, compared with the YOLOv5s algorithm, the average detection accuracy of this algorithm in all categories is improved from 89.64% to 92.86%, and the algorithm has excellent detection capability for personnel protection equipment under complex mine environment conditions, which verifies the effectiveness of the proposed method.