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Objective Evaluation of Active Interactions between the Operator and Display Screen Equipment Using an Innovative

Giuseppe De Palma1,2, Emma Sala1, Sofia Rubino2

  • 1Unit of Occupational Health, Hygiene, Toxicology and Prevention, University Hospital ASST Spedali Civili di Brescia, 25123 Brescia, Italy.

Bioengineering (Basel, Switzerland)
|June 28, 2023
PubMed
Summary
This summary is machine-generated.

This study introduces a new system to objectively measure display screen equipment (DSE) operator interaction time using sensors. This innovation enables more accurate occupational health risk assessments for DSE users.

Keywords:
display screen equipment (DSE)monitoring systemobjective measureoccupational healthscreen fixationvideo terminal unit (VDU)

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Area of Science:

  • Occupational health
  • Human-computer interaction
  • Ergonomics

Background:

  • Traditional occupational risk assessment for display screen equipment (DSE) operators relies on self-reported data via questionnaires.
  • Evaluating active operator-DSE interactions is crucial for accurate risk assessment and management.
  • Current methods lack objective measures of direct interaction time.

Purpose of the Study:

  • To evaluate an innovative system for objectively assessing active operator-DSE interactions.
  • To measure system performance in a sample of employees performing reading and copying tasks at DSE workstations.
  • To determine if collected data can improve occupational health risk evaluation.

Main Methods:

  • An objective assessment system was developed, collecting electrical impulses from mouse and keyboard, and using a camera for eye-screen fixation.
  • 38 DSE operators with normal health assessments participated in predefined reading and copying tasks.
  • System data on screen fixation, keyboard tapping, and mouse handling were collected and analyzed.

Main Results:

  • The system successfully collected data on operator-DSE interactions, including screen fixation, keyboard, and mouse activity.
  • In copying tasks, system-recorded session duration correlated strongly with screen fixation time.
  • Mouse and keyboard activities were more indicative of session duration than screen fixation during copying tasks, allowing for individual interaction profile generation.

Conclusions:

  • The developed system objectively quantifies active operator-DSE interaction time, enhancing the accuracy of occupational health risk assessment.
  • Objective data collection allows for more precise risk management strategies.
  • Individual interaction profiles can inform targeted preventive measures and improve overall worker wellbeing.