TY - JOUR
T1 - Modeling and Calibration of Pressure-Sensing Insoles via a New Plenum-Based Chamber
AU - Belli, Italo
AU - Sorrentino, Ines
AU - Dussoni, Simeone
AU - Milani, Gianluca
AU - Rapetti, Lorenzo
AU - Tirupachuri, Yeshasvi
AU - Valli, Enrico
AU - Vanteddu, Punith Reddy
AU - Maggiali, Marco
AU - Pucci, Daniele
PY - 2023
Y1 - 2023
N2 - This paper proposes a novel method to reliably calibrate a pair of sensorized insoles utilizing an array of capacitive tactile pixels (taxels). A new calibration setup is introduced that is scalable and suitable for multiple kinds of wearable sensors and a procedure for the simultaneous calibration of each of the sensors in the insoles is presented. The calibration relies on a two-step optimization algorithm that, firstly, enables determination of a relevant set of mathematical models based on the instantaneous measurement of the taxels alone, and, then, expands these models to include the relevant portion of the time history of the system. By comparing the resulting models with our previous work on the same hardware, we demonstrate the effectiveness of the novel method both in terms of increased ability to cope with the non-linear characteristics of the sensors and increased pressure ranges achieved during the experiments performed.
AB - This paper proposes a novel method to reliably calibrate a pair of sensorized insoles utilizing an array of capacitive tactile pixels (taxels). A new calibration setup is introduced that is scalable and suitable for multiple kinds of wearable sensors and a procedure for the simultaneous calibration of each of the sensors in the insoles is presented. The calibration relies on a two-step optimization algorithm that, firstly, enables determination of a relevant set of mathematical models based on the instantaneous measurement of the taxels alone, and, then, expands these models to include the relevant portion of the time history of the system. By comparing the resulting models with our previous work on the same hardware, we demonstrate the effectiveness of the novel method both in terms of increased ability to cope with the non-linear characteristics of the sensors and increased pressure ranges achieved during the experiments performed.
UR - http://www.scopus.com/inward/record.url?scp=85159172441&partnerID=8YFLogxK
U2 - 10.3390/s23094501
DO - 10.3390/s23094501
M3 - Article
SN - 1424-8220
VL - 23
JO - Sensors
JF - Sensors
IS - 9
M1 - 4501
ER -