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Polymer Optical Fiber Plantar Pressure Sensors: Design and Validation.

Sahar Safarloo1, Arántzazu Núñez-Cascajero1, Ruben Sanchez-Gomez2

  • 1Electronics Technology Department, Escuela Politécnica Superior, Universidad Carlos III de Madrid, 28911 Leganés, Spain.

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Summary
This summary is machine-generated.

This study introduces a new, low-cost plastic optical fiber (POF) bend sensor for accurate plantar pressure measurement during gait. This non-invasive wearable device offers a practical solution for monitoring foot health and performance.

Keywords:
biofeedback toolfiber optic macro-bendgait monitoringoptical fiber sensorplantar sensorplastic optical fiber

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Area of Science:

  • Biomechanics
  • Biomedical Engineering
  • Materials Science

Background:

  • Accurate plantar pressure measurement is crucial for diagnosing foot conditions and analyzing gait.
  • Existing methods using force platforms or wearable devices are often costly, bulky, or restrictive.
  • Plastic optical fiber (POF) advancements enable novel, low-cost sensor development.

Purpose of the Study:

  • To design, fabricate, and characterize a novel intensity-based POF bend sensor for plantar pressure monitoring.
  • To assess the sensor's potential for measuring gait patterns and foot forces.
  • To provide a cost-effective and non-invasive alternative to current measurement technologies.

Main Methods:

  • Developed a novel intensity-based POF bend sensor for plantar pressure detection.
  • Conducted static and dynamic tests to evaluate sensor performance (measurement range, sensitivity, linearity).
  • Compared sensor output against commercial piezo resistive sensors and a clinical force platform.

Main Results:

  • The novel POF bend sensor demonstrated effectiveness in detecting foot-applied forces and measuring gait patterns.
  • Sensor performance was validated through rigorous static and dynamic testing.
  • Results indicated comparable performance to existing commercial sensors, highlighting the POF sensor's potential.

Conclusions:

  • The developed POF bend sensor is a low-cost, lightweight, and non-invasive solution for plantar pressure monitoring.
  • This technology holds promise for various applications, including gait analysis, sports performance, and preventative healthcare (e.g., ulcer prevention).
  • The sensor's ease of construction and minimal signal processing requirements make it a practical tool for widespread use.