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Related Experiment Video

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Sensitivity Enhancement of Soft Capacitive Pressure Sensors Using a Solvent Evaporation-Based Porosity Control Technique
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Customized Textile Capacitive Insole Sensor for Center of Pressure Analysis.

Jong-Gab Ho1, Young Kim1, Se-Dong Min1,2

  • 1Department of Software Convergence, Soonchunhyang University, Asan 31538, Republic of Korea.

Sensors (Basel, Switzerland)
|December 11, 2022
PubMed
Summary
This summary is machine-generated.

Researchers developed a cost-effective insole sensor (I-TCPs) to measure plantar pressure and center of pressure during walking. The I-TCPs demonstrated good accuracy compared to existing systems, showing potential for wearable health technology.

Keywords:
center of pressuregaitinsoletextile capacitive pressure sensorwearable sensor

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Area of Science:

  • Biomechanics
  • Wearable Technology
  • Sensor Development

Background:

  • Center of pressure (COP) is a key metric in human locomotion analysis.
  • Accurate measurement of plantar pressure (PP) and COP trajectory is crucial for understanding gait.
  • Existing systems for PP and COP measurement can be expensive and cumbersome.

Purpose of the Study:

  • To develop and validate a cost-effective, lightweight insole-type textile capacitive sensor (I-TCPs).
  • To analyze plantar pressure distribution and center of pressure trajectory using the developed I-TCPs.
  • To compare the accuracy of I-TCPs against a gold-standard system (F-scan).

Main Methods:

  • Development of insole-type textile capacitive sensors (I-TCPs).
  • Static baseline tests and dynamic gait experiments at self-selected comfortable and fast speeds.
  • Comparison of I-TCPs pressure data with F-scan measurements.

Main Results:

  • I-TCPs successfully recognized plantar pressure segments at different gait speeds.
  • In comfortable gait speed, average RMSE was 1.29 ± 0.47 mm for COPx and 12.55 ± 5.08 mm for COPy.
  • COP correlation with F-scan was 0.54 ± 0.09 for COPx and 0.92 ± 0.04 for COPy, with COPy showing stronger correlation.

Conclusions:

  • The developed I-TCPs offer a viable, cost-effective solution for analyzing plantar pressure and center of pressure.
  • The sensor demonstrates good accuracy and correlation with existing systems, suitable for various gait speeds.
  • Findings support future applications in rehabilitation engineering, ICT devices, and smart wearable sensors.