高新宇, 李 博, 王璐瑶, 李廉洁, 王学文
(太原理工大学机械与运载工程学院; 煤矿综采装备山西省重点试验室, 山西太原 030024)
DOI:10.13732/j.issn.1008-5548.2021.04.010
收稿日期: 2021-04-23, 修回日期:2021-05-01,在线出版时间:2021-06-01 09:55。
基金项目:山西省重点研发计划项目,编号:201903D121074。
第一作者简介:高新宇(1995—),男,硕士研究生,研究方向为煤矸石智能分选。E-mail: 813358884@qq.com。
通信作者简介:王学文(1979—),男,博士,教授,博士生导师,研究方向为机械设计及理论。E-mail: wxuew@163.com。
摘要:按照实际工况在实验室搭建煤矸分选平台,采用深层目标检测网络对煤矸石进行在线识别,根据分选时煤矸石的形状和大小,将目标检测网络中的特征金字塔设定为3个尺度,并确定锚(参考边界框)的形状和大小;比较10个IOU(Intersection-over-union)阈值下验证集的平均精度(AP),并在煤矸石分选平台对目标检测网络进行动态测试。结果表明:IOU为0.8时,目标检测网络的分类和定位效果最佳,动态识别的精确度和召回率均达到95%以上。
关键词:煤矸分选;图像处理;深度学习;目标检测
Abstract: A platform of coal-gangue separation was set up in the laboratory according to the actual working conditions. Adopting object detection network to identify coal and gangue online and according to the shape and size of coal gangue during sorting, the feature pyramid in the object detection network was set as three scales, and the shape and size of the anchor were determined. Comparing the AP (average precision) of the validation set under 10 IOU (intersection over union) thresholds, and a dynamic test was carried out on the separation platform built. The results show that the classification and positioning effect of the object detection network was the best when the IOU was 0.8, and the precision and recall of dynamic identification can reach more than 95%.
Keywords: coal-gangue separation; image processing; deep learning; object detection
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