Intelligent vibrotactile biofeedback system for real-time postural correction on perturbed surfaces

A. A. Gopalai, S. M.N.A. Senanayake, K. H. Lim

Research output: Chapter in Book/Report/Conference proceedingConference PaperOther

2 Citations (Scopus)


Biofeedbacks delivery during rehabilitation have been known to improve postural control and shorten rehabilitation periods. A biofeedback system communicates with the human central nervous system (CNS) through a variety of feedback modalities. Among the many available modalities vibrotactile feedback devices are gaining much attention. This is due to their desirable characteristics and simplistic manner of presenting information to the CNS. An intelligent biofeedback system integrated with wireless sensors for monitoring postural control during rehabilitation was hypothesized to shorten rehabilitation periods. This work presents the design of a postural control measuring device integrated with real-time intelligent biofeedback for postural correction. The system integrates three modules: (a) inertial measurement units (IMUs), (b) fuzzy knowledge base, and (c) feedback driver circuit. Human posture is measured using Euler angular measurements from the IMUs. A fuzzy inference system (FIS) was used to determine quality of postural control, based on measurements from the IMUs. Forewarning of poor postural control is given by vibrotactile actuators (biofeedback). Experiments were conducted to test viability of the system in achieving accurate real-time measurements and interventions. The results observed improvements in postural control when biofeedback intervention was present.

Original languageEnglish
Title of host publicationProceedings of the 2012 12th International Conference on Intelligent Systems Design and Applications, ISDA 2012
Number of pages6
Publication statusPublished - 2012
Externally publishedYes
EventInternational Conference on Intelligent Systems Designs and Applications 2012 - Kochi, India
Duration: 27 Nov 201229 Nov 2012
Conference number: 12th (IEEE Conference Proceedings)

Publication series

NameInternational Conference on Intelligent Systems Design and Applications, ISDA
ISSN (Print)2164-7143
ISSN (Electronic)2164-7151


ConferenceInternational Conference on Intelligent Systems Designs and Applications 2012
Abbreviated titleISDA 2012
Internet address


  • Biofeedback
  • Postural Control
  • Rehabilitation
  • Vibrotactile
  • Wearable Sensors

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