{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,8]],"date-time":"2026-05-08T02:26:32Z","timestamp":1778207192611,"version":"3.51.4"},"reference-count":37,"publisher":"MDPI AG","issue":"16","license":[{"start":{"date-parts":[[2024,8,14]],"date-time":"2024-08-14T00:00:00Z","timestamp":1723593600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Special Project of Shaanxi Provincial Department of Education for Local Service","award":["23JC052"],"award-info":[{"award-number":["23JC052"]}]},{"name":"Special Project of Shaanxi Provincial Department of Education for Local Service","award":["2024QCY\u2013KXJ\u2013164"],"award-info":[{"award-number":["2024QCY\u2013KXJ\u2013164"]}]},{"name":"Special Project of Shaanxi Provincial Department of Education for Local Service","award":["23JP096"],"award-info":[{"award-number":["23JP096"]}]},{"name":"\u201cScientist &amp; Engineer\u201d Team Construction Project of Shaanxi Qin Chuang Yuan","award":["23JC052"],"award-info":[{"award-number":["23JC052"]}]},{"name":"\u201cScientist &amp; Engineer\u201d Team Construction Project of Shaanxi Qin Chuang Yuan","award":["2024QCY\u2013KXJ\u2013164"],"award-info":[{"award-number":["2024QCY\u2013KXJ\u2013164"]}]},{"name":"\u201cScientist &amp; Engineer\u201d Team Construction Project of Shaanxi Qin Chuang Yuan","award":["23JP096"],"award-info":[{"award-number":["23JP096"]}]},{"name":"Shaanxi University Youth Innovation Team Project","award":["23JC052"],"award-info":[{"award-number":["23JC052"]}]},{"name":"Shaanxi University Youth Innovation Team Project","award":["2024QCY\u2013KXJ\u2013164"],"award-info":[{"award-number":["2024QCY\u2013KXJ\u2013164"]}]},{"name":"Shaanxi University Youth Innovation Team Project","award":["23JP096"],"award-info":[{"award-number":["23JP096"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>Foreign objects in coal flow easily cause damage to conveyor belts, and most foreign objects are often occluded, making them difficult to detect. Aiming at solving the problems of low accuracy and efficiency in the detection of occluded targets in a low-illumination and dust fog environment, an image detection method for foreign objects is proposed. Firstly, YOLOv5s back-end processing is optimized by soft non-maximum suppression to reduce the influence of dense objects. Secondly, SimOTA label allocation is used to reduce the influence of ambiguous samples under dense occlusion. Then, Slide Loss is used to excavate difficult samples, and Inner\u2013SIoU is used to optimize the bounding box regression loss. Finally, Group\u2013Taylor pruning is used to compress the model. The experimental results show that the proposed method has only 4.20 \u00d7 105 parameters, a computational amount of 1.00 \u00d7 109, a model size of 1.20 MB, and an mAP0.5 of up to 91.30% on the self-built dataset. The detection speed on the different computing devices is as high as 66.31, 41.90, and 33.03 FPS. This proves that the proposed method achieves fast and high-accuracy detection of multi-layer occluded coal flow foreign objects.<\/jats:p>","DOI":"10.3390\/s24165251","type":"journal-article","created":{"date-parts":[[2024,8,14]],"date-time":"2024-08-14T05:23:27Z","timestamp":1723613007000},"page":"5251","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":6,"title":["A Fast and High-Accuracy Foreign Object Detection Method for Belt Conveyor Coal Flow Images with Target Occlusion"],"prefix":"10.3390","volume":"24","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-9891-0568","authenticated-orcid":false,"given":"Hongwei","family":"Fan","sequence":"first","affiliation":[{"name":"School of Mechanical Engineering, Xi\u2019an University of Science and Technology, Xi\u2019an 710054, China"},{"name":"Shaanxi Key Laboratory of Mine Electromechanical Equipment Intelligent Detection and Control, Xi\u2019an University of Science and Technology, Xi\u2019an 710054, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0009-0002-6760-360X","authenticated-orcid":false,"given":"Jinpeng","family":"Liu","sequence":"additional","affiliation":[{"name":"School of Mechanical Engineering, Xi\u2019an University of Science and Technology, Xi\u2019an 710054, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Xinshan","family":"Yan","sequence":"additional","affiliation":[{"name":"School of Mechanical Engineering, Xi\u2019an University of Science and Technology, Xi\u2019an 710054, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Chao","family":"Zhang","sequence":"additional","affiliation":[{"name":"School of Mechanical Engineering, Xi\u2019an University of Science and Technology, Xi\u2019an 710054, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Xiangang","family":"Cao","sequence":"additional","affiliation":[{"name":"School of Mechanical Engineering, Xi\u2019an University of Science and Technology, Xi\u2019an 710054, China"},{"name":"Shaanxi Key Laboratory of Mine Electromechanical Equipment Intelligent Detection and Control, Xi\u2019an University of Science and Technology, Xi\u2019an 710054, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Qinghua","family":"Mao","sequence":"additional","affiliation":[{"name":"School of Mechanical Engineering, Xi\u2019an University of Science and Technology, Xi\u2019an 710054, China"},{"name":"Shaanxi Key Laboratory of Mine Electromechanical Equipment Intelligent Detection and Control, Xi\u2019an University of Science and Technology, Xi\u2019an 710054, China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2024,8,14]]},"reference":[{"key":"ref_1","first-page":"6","article-title":"Current status and development trend of intelligent technology of underground coal mine transportation system","volume":"48","author":"Chen","year":"2022","journal-title":"J. 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