Instrumented Office Chair With Low-Cost Plastic Optical Fiber Sensors for Posture Control and Work Conditions Optimization

Catia Tavares, Joao Oliveira E. Silva, Andre Mendes, Leonor Rebolo, Maria De Fatima Domingues, Nelia Alberto, Mario Lima, Hugo Placido Silva, Paulo Fernando Da Costa Antunes

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

Abstract

People spend more and more time sitting and this habit has been shown to cause spine pathologies. Thus, the scientific community and the industry have become interested in instrumented chairs development to detect incorrect user postures. In this work we present the development and implementation of invisibles and non-intrusive plastic optical fiber sensor cells to monitor the posture and evaluate the ergonomic behavior of a seated person. The low-cost plastic optical fiber (POF) based sensing devices developed in this work, were implemented in an office chair, to evaluate the workers posture throughout their work day. In addition to the sensors, Android and PC software applications were developed, to provide real time feedback and alerts to the user whenever an inadequate posture is detected, or the seating position is the same for a long time. The proposed approach was evaluated in a study involving six users, and results show that it can detect the user's position with 96.6% accuracy.

Original languageBritish English
Pages (from-to)69063-69071
Number of pages9
JournalIEEE Access
Volume10
DOIs
StatePublished - 2022

Keywords

  • ergonomic posture
  • plastic optical fiber
  • Pressure sensors
  • work conditions

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