20.500.12556/DKUM-97410 A deep learning-based worker assistance system for error prevention: Case study in a real-world manual assembly case study in a real-world manual assembly Modern assembly systems adapt to the requirements of customised and short-lived products. As assembly tasks become increasingly complex and change rapidly, the cognitive load on employees increases. This leads to the use of assistance systems for manual assembly to detect and avoid human errors and thus ensure consistent product quality. Most of these systems promise to improve the production environment but have hardly been studied quantitatively so far. Recent advances in deep learning-based computer vision have also not yet been fully exploited. This study aims to provide architectural, and implementational details of a state-of-the-art assembly assistance system based on an object detection model. The proposed architecture is intended to be representative of modern assistance systems. The error prevention potential is determined in a case study in which test subjects manually assemble a complex explosion-proof tubular lamp. The results show 51 % fewer assembly errors compared to a control group without assistance. Three of the four considered types of error classes have been reduced by at least 42 %. In particular, errors by omission are most likely to be prevented by the system. The reduction in the error rate is observed over the entire period of 30 consecutive product assemblies, comparing assisted and unassisted assembly. Furthermore, the recorded assembly data are found to be valuable regarding traceability and production improvement processes. deep learning machine learning Industry 4.0 smart manufacturing manual assembly assistance system error prevention object detection globoko učenje strojno učenje Industrija 4.0 pametna proizvodnja ročna montaža preprečevanje napak odkrivanje objektov true false true Chair of Production Engineering (CPE), University of Maribor Faculty of Mechanical Engineering Angleški jezik Slovenski jezik https://apem-journal.org/ Content from this work may be used under the terms of the Creative Commons Attribution 4.0 International Licence (CC BY 4.0). Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI. Članek v reviji 2026-03-04 12:28:04 2026-03-04 12:28:05 2026-03-11 09:22:10 0000-00-00 00:00:00 2021 0 0 str. 393-404 no. 4 Vol. 16 Dec. 2021 0000-00-00 Zaloznikova Objavljeno NiDoloceno 2021-10-14 2021-12-04 2021-12-18 658.5:004.8 270430979 10.14743/apem2021.4.408 1854-6250 APEM16-4_393-404.pdf APEM16-4_393-404.pdf 1 FC7BCAD11310ECB4F1EFD1473A671AED f9639322aadd0a0f22a58fae6d162e3f26926c363ba8027347ba2af1d6f3aa3d 9ceefd0d-17bd-11f1-aa76-00155d580e1a https://dk.um.si/Dokument.php?lang=slv&id=204247 https://apem-journal.org/Archives/2021/APEM16-4_393-404.pdf 0 a3938d6c-17bd-11f1-aa76-00155d580e1a https://dk.um.si/Dokument.php?lang=slv&id=204248 Fakulteta za strojništvo Advances in production engineering & management 0 0 0