A Deep Learning-Based Platform for Workers' Stress Detection Using Minimally Intrusive Multisensory Devices.

Journal: Sensors (Basel, Switzerland)
Published Date:

Abstract

The advent of Industry 4.0 necessitates substantial interaction between humans and machines, presenting new challenges when it comes to evaluating the stress levels of workers who operate in increasingly intricate work environments. Undoubtedly, work-related stress exerts a significant influence on individuals' overall stress levels, leading to enduring health issues and adverse impacts on their quality of life. Although psychological questionnaires have traditionally been employed to assess stress, they lack the capability to monitor stress levels in real-time or on an ongoing basis, thus making it arduous to identify the causes and demanding aspects of work. To surmount this limitation, an effective solution lies in the analysis of physiological signals that can be continuously measured through wearable or ambient sensors. Previous studies in this field have mainly focused on stress assessment through intrusive wearable systems susceptible to noise and artifacts that degrade performance. One of our recently published papers presented a wearable and ambient hardware-software platform that is minimally intrusive, able to detect human stress without hindering normal work activities, and slightly susceptible to artifacts due to movements. A limitation of this system is its not very high performance in terms of the accuracy of detecting multiple stress levels; therefore, in this work, the focus was on improving the software performance of the platform, using a deep learning approach. To this purpose, three neural networks were implemented, and the best performance was achieved by the 1D-convolutional neural network with an accuracy of 95.38% for the identification of two levels of stress, which is a significant improvement over those obtained previously.

Authors

  • Gabriele Rescio
    National Research Council of Italy, Institute for Microelectronics and Microsystems, 73100 Lecce, Italy.
  • Andrea Manni
    Chemical Research 2000 Srl, Via Santa Margherita di Belice 16, 00133 Rome, Italy. Electronic address: info@cr2000.it.
  • Marianna Ciccarelli
    Department of Industrial Engineering and Mathematical Sciences, Marche Polytechnic University, 60131 Ancona, Italy.
  • Alessandra Papetti
    Department of Industrial Engineering and Mathematical Sciences, Marche Polytechnic University, 60131 Ancona, Italy.
  • Andrea Caroppo
    Institute for Microelectronics and Microsystems, National Research Council of Italy, Lecce 73100, Italy. Electronic address: andrea.caroppo@cnr.it.
  • Alessandro Leone
    Institute for Microelectronics and Microsystems, National Research Council of Italy, Lecce 73100, Italy. Electronic address: alessandro.leone@cnr.it.