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A Novel Sensorised Insole for Sensing Feet Pressure Distributions.
- Source :
-
Sensors (Basel, Switzerland) [Sensors (Basel)] 2020 Jan 29; Vol. 20 (3). Date of Electronic Publication: 2020 Jan 29. - Publication Year :
- 2020
-
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 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.
Details
- Language :
- English
- ISSN :
- 1424-8220
- Volume :
- 20
- Issue :
- 3
- Database :
- MEDLINE
- Journal :
- Sensors (Basel, Switzerland)
- Publication Type :
- Academic Journal
- Accession number :
- 32013226
- Full Text :
- https://doi.org/10.3390/s20030747