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LED-based indoor positioning system using novel optical pixelation technique.

Olaoluwa R Popoola1, Sinan Sinanović1, Roberto Ramirez-Iniguez1

  • 1School of Engineering and Built Environment, Glasgow Caledonian University, Glasgow, G4 0BA, UK.

Healthcare Technology Letters
|July 26, 2019
PubMed
Summary
This summary is machine-generated.

This study introduces an affordable indoor positioning system using optically pixeled LED luminaires (OPLL) to monitor Alzheimer

Keywords:
Alzheimer's diseaseMonte Carlo methodsMonte Carlo simulationPWADappropriate LED beam designdiseasesfreeform lenseshandicapped aidsimage resolutionindoor navigationinexpensive indoor positioning systemlenseslight emitting diodesoptical pixelation techniqueoptically pixeled LED luminairepeople with ADpositioning accuracypositioning erroruniquely identifiable regions

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Area of Science:

  • Engineering
  • Computer Science
  • Medical Technology

Background:

  • Alzheimer's disease (AD) affects 47 million globally, necessitating extensive care.
  • Care for people with AD (PWAD) incurs significant financial and emotional burdens on families.
  • Current monitoring systems for PWAD may lack accuracy or affordability.

Purpose of the Study:

  • To develop an inexpensive indoor positioning system for monitoring people with Alzheimer's disease (PWAD).
  • To reduce the caregiving burden on relatives of PWAD through enhanced monitoring capabilities.
  • To improve the accuracy and efficiency of indoor positioning for healthcare applications.

Main Methods:

  • Utilized freeform lenses to create a novel optically pixeled LED luminaire (OPLL).
  • Designed OPLL to focus LED beams, creating unique regions for improved positioning accuracy.
  • Employed Monte Carlo simulation for positioning error computation and theoretical analysis/experiments for time validation.

Main Results:

  • The developed OPLL system achieved a positioning error of 0.735 m.
  • The system demonstrated a positioning time of 187 ms.
  • Achieved a 55.1% reduction in positioning error and 1.2x faster positioning compared to existing models.

Conclusions:

  • The optically pixeled LED luminaire (OPLL) offers a promising solution for accurate and efficient indoor positioning.
  • This technology can significantly alleviate the burden of care for people with Alzheimer's disease (PWAD).
  • The proposed system presents a cost-effective and advanced method for monitoring vulnerable individuals.