A Novel Sensorised Insole for Sensing Feet Pressure Distributions
Abstract
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 center 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.
Keywords
Cite
@article{arxiv.1910.06370,
title = {A Novel Sensorised Insole for Sensing Feet Pressure Distributions},
author = {Ines Sorrentino and Francisco Javier Andrade Chavez and Claudia Latella and Luca Fiorio and Silvio Traversaro and Lorenzo Rapetti and Yeshasvi Tirupachuri and Nuno Guedelha and Marco Maggiali and Simeone Dussoni and Giorgio Metta and Daniele Pucci},
journal= {arXiv preprint arXiv:1910.06370},
year = {2020}
}
Comments
21 pages, 12 figures