Cognitive Learning, Monitoring and Assistance of Industrial Workflows Using Egocentric Sensor Networks

Gabriele Bleser, Ardhendu Behera, Dima Damen, Gustaf Hendeby, Katharina Mura, Andrew Gee, Nils Petersen, Gustavo Maçães, Hugo Domingues, Dominic Gorecky, Luis Almeida, Walterio Mayol-Cuevas, Andrew Calway, Anthony Cohn, David Hogg, Didier Stricker

Research output: Contribution to journalArticle

25 Citations (Scopus)
75 Downloads (Pure)

Abstract

Today, the workflows that are involved in industrial assembly and production activities are becoming increasingly complex. To efficiently and safely perform these workflows is demanding on the workers, in particular when it comes to infrequent or repetitive tasks. This burden on the workers can be eased by introducing smart assistance systems. This article presents a scalable concept and an integrated system demonstrator designed for this purpose. The basic idea is to learn workflows from observing multiple expert operators and then transfer the learnt workflow models to novice users. Being entirely learning-based, the proposed system can be applied to various tasks and domains. The above idea has been realized in a prototype, which combines components pushing the state of the art of hardware and software designed with interoperability in mind. The emphasis of this article is on the algorithms developed for the prototype: 1) fusion of inertial and visual sensor information from an on-body sensor network (BSN) to robustly track the user’s pose in magnetically polluted environments; 2) learning-based computer vision algorithms to map the workspace, localize the sensor with respect to the workspace and capture objects, even as they are carried; 3) domain-independent and robust workflow recovery and monitoring algorithms based on spatiotemporal pairwise relations deduced from object and user movement with respect to the scene; and 4) context-sensitive augmented reality (AR) user feedback using a head-mounted display (HMD). A distinguishing key feature of the developed algorithms is that they all operate solely on data from the on-body sensor network and that no external instrumentation is needed. The feasibility of the chosen approach for the complete action-perception-feedback loop is demonstrated on three increasingly complex datasets representing manual industrial tasks. These limited size datasets indicate and highlight the potential of the chosen technology as a combined entity as well as point out limitations of the system.
Original languageEnglish
Pages (from-to)1-41
JournalPLoS ONE
Volume10
Issue number6
Early online date30 Jun 2015
DOIs
Publication statusE-pub ahead of print - 30 Jun 2015

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    Bleser, G., Behera, A., Damen, D., Hendeby, G., Mura, K., Gee, A., Petersen, N., Maçães, G., Domingues, H., Gorecky, D., Almeida, L., Mayol-Cuevas, W., Calway, A., Cohn, A., Hogg, D., & Stricker, D. (2015). Cognitive Learning, Monitoring and Assistance of Industrial Workflows Using Egocentric Sensor Networks. PLoS ONE, 10(6), 1-41. https://doi.org/10.1371/journal.pone.0127769