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Article

Validation of a Fast and Accurate Magnetic Tracker Operating in the Environmental Field

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Department of Information Engineering and Mathematics (DIISM), Siena University, Via Roma 56, 53100 Siena, Italy
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Department of Physical Sciences, Earth and Environment (DSFTA), Siena University, Via Roma 56, 53100 Siena, Italy
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Department of Medicine, Surgery and Neuroscience (DSMCN), Siena University, Viale Bracci 16, 53100 Siena, Italy
*
Author to whom correspondence should be addressed.
Current address: Department of Physics, Pisa University, Largo Pontecorvo, 3, 56127 Pisa, Italy.
Current address: Aerospazio Tecnologie srl, Strada di Ficaiole, 53040 Rapolano Terme, Italy.
§
Current address: Department of Physics and Astronomy, University College London, Gower Street, London WC1E 6BT, UK.
Academic Editor: Antonio Ereditato
Instruments 2021, 5(1), 11; https://doi.org/10.3390/instruments5010011
Received: 26 January 2021 / Accepted: 25 February 2021 / Published: 5 March 2021
We characterize the performance of a system based on a magnetoresistor array. This instrument is developed to map the magnetic field, and to track a dipolar magnetic source in the presence of a static homogeneous field. The position and orientation of the magnetic source with respect to the sensor frame is retrieved together with the orientation of the frame with respect to the environmental field. A nonlinear best-fit procedure is used, and its precision, time performance, and reliability are analyzed. This analysis is performed in view of the practical application for which the system is designed that is an eye-tracking diagnostics and rehabilitative tool for medical purposes, which require high speed (≥100 Sa/s) and sub-millimetric spatial resolution. A throughout investigation on the results makes it possible to list several observations, suggestions, and hints, which will be useful in the design of similar setups. View Full-Text
Keywords: tracking; magnetic tracking; eye tracking; sensor array; eye motion tracking; magnetic tracking; eye tracking; sensor array; eye motion
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MDPI and ACS Style

Biancalana, V.; Cecchi, R.; Chessa, P.; Mandalà, M.; Bevilacqua, G.; Dancheva, Y.; Vigilante, A. Validation of a Fast and Accurate Magnetic Tracker Operating in the Environmental Field. Instruments 2021, 5, 11. https://doi.org/10.3390/instruments5010011

AMA Style

Biancalana V, Cecchi R, Chessa P, Mandalà M, Bevilacqua G, Dancheva Y, Vigilante A. Validation of a Fast and Accurate Magnetic Tracker Operating in the Environmental Field. Instruments. 2021; 5(1):11. https://doi.org/10.3390/instruments5010011

Chicago/Turabian Style

Biancalana, Valerio, Roberto Cecchi, Piero Chessa, Marco Mandalà, Giuseppe Bevilacqua, Yordanka Dancheva, and Antonio Vigilante. 2021. "Validation of a Fast and Accurate Magnetic Tracker Operating in the Environmental Field" Instruments 5, no. 1: 11. https://doi.org/10.3390/instruments5010011

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