• Media type: E-Article
  • Title: A Novel Sensorised Insole for Sensing Feet Pressure Distributions
  • Contributor: Sorrentino, Ines; Andrade Chavez, Francisco Javier; Latella, Claudia; Fiorio, Luca; Traversaro, Silvio; Rapetti, Lorenzo; Tirupachuri, Yeshasvi; Guedelha, Nuno; Maggiali, Marco; Dussoni, Simeone; Metta, Giorgio; Pucci, Daniele
  • Published: MDPI AG, 2020
  • Published in: Sensors, 20 (2020) 3, Seite 747
  • Language: English
  • DOI: 10.3390/s20030747
  • ISSN: 1424-8220
  • Origination:
  • Footnote:
  • Description: Wearable sensors are gaining in popularity because they enable outdoor experimental monitoring. This paper presents a cost-effective sensorised insole based on a mesh of tactile capacitive sensors. Each sensor’s spatial resolution is about 4 taxels/cm 2 in order to have an accurate reconstruction of the contact pressure distribution. As a consequence, the insole provides information such as contact forces, moments, and centre of pressure. To retrieve this information, a calibration technique that fuses measurements from a vacuum chamber and shoes equipped with force/torque sensors is proposed. The validation analysis shows that the best performance achieved a root mean square error (RMSE) of about 7   N for the contact forces and 2   N m for the contact moments when using the force/torque shoe data as ground truth. Thus, the insole may be an alternative to force/torque sensors for certain applications, with a considerably more cost-effective and less invasive hardware.
  • Access State: Open Access