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HUSÁK, M. MIHÁLIK, O. DVORSKÝ, P. BRADÁČ, Z.
Originální název
A Method of Tactile Resistive Sensor Array Calibration
Typ
článek ve sborníku ve WoS nebo Scopus
Jazyk
angličtina
Originální abstrakt
Resistive sensor arrays (RSA) comprising of pressure-sensitive elements find broad use in pressure-sensing applications. However, sensor manufacturing inevitably yields a number of non-ideal properties. The gain, offset or non-linearities of an RSA’s elements may vary between individual sensors (taxels). Hence a simple calibration procedure to suppress these effects is desirable. The paper presents a method of and apparatus for the calibration of a pressure-sensing RSA. A forward mathematical model for each sensor is obtained during the calibration phase. In subsequent online measurement, the inverse model is utilised to compensated for the non-uniformity in sensor gain and offset. This approach leads to an appreciable improvement in picture quality, which can be mathematically quantified using classification accuracy in our tactile anti-decubitus platform for human monitoring. Namely, in a four-class classification experiment involving a support vector machine, the classification error decreased from 11 % before calibration to 3.5 % after calibration. Owing to the calibration procedure, a classifier trained using a calibrated RSA can be deployed to another calibrated RSA, without further data collection.
Klíčová slova
calibration, pressure, resistive sensor array, tactile platform, robustness
Autoři
HUSÁK, M.; MIHÁLIK, O.; DVORSKÝ, P.; BRADÁČ, Z.
Vydáno
14. 8. 2024
Nakladatel
Elsevier
Místo
Brno, Czechia
ISSN
2405-8963
Periodikum
IFAC-PapersOnLine (ELSEVIER)
Ročník
58
Číslo
9
Stát
Nizozemsko
Strany od
37
Strany do
42
Strany počet
6
URL
https://doi.org/10.1016/j.ifacol.2024.07.368
BibTex
@inproceedings{BUT189138, author="Michal {Husák} and Ondrej {Mihálik} and Petr {Dvorský} and Zdeněk {Bradáč}", title="A Method of Tactile Resistive Sensor Array Calibration", booktitle="18th IFAC Conference on Programmable Devices and Embedded Systems – PDeS 2024", year="2024", journal="IFAC-PapersOnLine (ELSEVIER)", volume="58", number="9", pages="37--42", publisher="Elsevier", address="Brno, Czechia", doi="10.1016/j.ifacol.2024.07.368", issn="2405-8963", url="https://doi.org/10.1016/j.ifacol.2024.07.368" }