基于改进YOLOv11n算法的摇床精矿分带位置智能提取方法

Intelligent Extraction Method of Shaking Table Concentrate Zoning Position Based on Improved YOLOv11n Algorithm

  • 摘要: 目前选矿摇床生产操作需依赖人工肉眼观察精矿分带位置,然后根据精矿分带位置手动调节精矿截取板,调节效率低、误差大,为替代人工实现对精矿分带位置的快速自动识别,提出了一种基于YOLOv11n改进的SFEL−YOLO轻量级选矿摇床精矿分带位置智能提取方法。首先,采用轻量化StarNet主干网络替换YOLOv11n主干网络降低模型的参数量,卷积层引入部分卷积PConv替换深度可分离卷积DWConv,以重构StarNet网络形成新的轻量级P−StarNet主干网络,进一步降低了模型的冗余参数并提升了模型检测精度;其次,将FasterNet Block模块融入颈部网络的C3k2模块提升模型在复杂环境中的检测性能,同时引入高效多尺度注意力机制EMA构建了Faster_EMA模块,提高了模型的抗干扰能力;最后,设计了轻量级共享卷积检测头LSCD,结合共享卷积、组归一化GN和边界框回归损失函数DFL降低了模型复杂度,提高了模型对选矿摇床精矿分带位置的检测效率。利用工业摄像头采集钨选矿厂的多台选钨摇床矿物分带图像,构建了选钨摇床精矿分带位置数据集进行实验,实验表明,改进的SFEL−YOLO模型mAP50达到了96.8%,Parameters、GFLOPs和Weights分别为1.629×106、3.9和3.5 MB,相较于YOLOv11n模型mAP50提升了1.9百分点,Parameters减少了36.9%,GFLOPs减少了38.1%,Weights缩小了36.4%,改进模型在选矿摇床部署的精矿分带位置检测准确率高达93.5%。SFEL−YOLO模型在保证对精矿分带位置高精度检测的同时,显著降低了模型复杂度,且能够降低漏检率,满足工业生产中选矿摇床精矿分带位置自动识别的准确性及模型轻量化要求。

     

    Abstract: Current shaking table concentration operations rely on manual observation of concentrate zoning positions, followed by manual adjustment of the concentrate cutting plate. This approach suffers from low efficiency and high error rates. To replace manual labor and achieve rapid, automatic recognition of concentrate zoning positions, this paper proposed an intelligent extraction method for concentrate zoning positions on a shaking table based on an improved YOLOv11n algorithm, termed SFEL−YOLO, a lightweight detection model. First, a lightweight StarNet backbone network was adopted to replace the original YOLOv11n backbone, reducing the number of model parameters. Partial convolution (PConv) was introduced in the convolutional layers to replace depthwise separable convolution (DWConv), thereby reconstructing the StarNet architecture into a novel lightweight P−StarNet backbone, which further reduced redundant parameters and improves detection accuracy. Second, the FasterNet Block module was integrated into the C3k2 module of the neck network to enhance detection performance in complex environments. Additionally, an efficient multi−scale attention mechanism (EMA) was incorporated to construct a Faster_EMA module, improving the model's anti−interference capability. Finally, a lightweight shared convolutional detection head (LSCD) was designed, combining shared convolution, group normalization (GN), and the distribution focal loss (DFL) for bounding box regression to reduce model complexity and improve detection efficiency for concentrate zoning positions on the shaking table. A dataset of mineral zoning images was collected from multiple tungsten shaking tables in a tungsten beneficiation plant using industrial cameras. Experimental results show that the improved SFEL−YOLO model achieves an mAP50 of 96.8%, with Parameters, GFLOPs, and Weights of 1.629×106, 3.9, and 3.5 MB, respectively. Compared to the YOLOv11n model, the mAP50 is improved by 1.9%, while Parameters, GFLOPs, and Weights are reduced by 36.9%, 38.1%, and 36.4%, respectively. The deployed model achieves a detection accuracy of 93.5% for concentrate zoning positions on the shaking table. The SFEL−YOLO model ensures high−precision detection of concentrate zoning positions while significantly reducing model complexity and lowering the miss detection rate, meeting the requirements for both accuracy and lightweight deployment in industrial shaking table concentrate zoning position recognition.

     

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