Radiofrequency finger augmentation devices (R-FADs) are a recently introduced class of epidermal radiofrequency identification (RFID) sensor-tags attached to the fingers, communicating with a body-worn reader. These devices are promising candidates to enable Tactile Internet (TI) applications in the short term. R-FAD based on auto-tuning RFID microchips can be used as dielectric probes for the material of touched objects. However, due to the nearly unpredictable intrinsic variability of finger-object interaction, a single sensorized finger (single-channel device) is not enough to guarantee reliable data sampling. These limitations can be overcome by exploiting a multi-channel R-FAD sensorizing multiple fingers of the hand. In this paper, the dielectric-sensing performance of a multi-channel R-FAD, composed of sensors encapsulated into soft elastomers, is numerically and experimentally characterized, involving a set of volunteers. The inter-sensor coupling is negligible, thus enabling simultaneous independent dielectric measurements. The multi-sensor configuration allows for 100% reliability of the on-hand communication link for touched objects in a wide range of permittivity. Experiments moreover demonstrate that multi-channel measurements can halve the measurement uncertainty of the single-channel case. The achievable precision is suitable to discriminate among low-, medium-, and high-permittivity materials.

Naccarata, F., Bianco, G.m., Marrocco, G. (2022). Sensing Performance of Multi-Channel RFID-Based Finger Augmentation Devices for Tactile Internet. IEEE JOURNAL OF RADIO FREQUENCY IDENTIFICATION, 6, 209-217 [10.1109/JRFID.2022.3178348].

Sensing Performance of Multi-Channel RFID-Based Finger Augmentation Devices for Tactile Internet

Marrocco G.
2022-01-01

Abstract

Radiofrequency finger augmentation devices (R-FADs) are a recently introduced class of epidermal radiofrequency identification (RFID) sensor-tags attached to the fingers, communicating with a body-worn reader. These devices are promising candidates to enable Tactile Internet (TI) applications in the short term. R-FAD based on auto-tuning RFID microchips can be used as dielectric probes for the material of touched objects. However, due to the nearly unpredictable intrinsic variability of finger-object interaction, a single sensorized finger (single-channel device) is not enough to guarantee reliable data sampling. These limitations can be overcome by exploiting a multi-channel R-FAD sensorizing multiple fingers of the hand. In this paper, the dielectric-sensing performance of a multi-channel R-FAD, composed of sensors encapsulated into soft elastomers, is numerically and experimentally characterized, involving a set of volunteers. The inter-sensor coupling is negligible, thus enabling simultaneous independent dielectric measurements. The multi-sensor configuration allows for 100% reliability of the on-hand communication link for touched objects in a wide range of permittivity. Experiments moreover demonstrate that multi-channel measurements can halve the measurement uncertainty of the single-channel case. The achievable precision is suitable to discriminate among low-, medium-, and high-permittivity materials.
Pubblicato
Rilevanza internazionale
Articolo
Esperti anonimi
Settore ING-INF/02
English
Auto-tuning antennas
body-area Internet of Things
epidermal sensors
flexible electronic
radiofrequency identification
Naccarata, F., Bianco, G.m., Marrocco, G. (2022). Sensing Performance of Multi-Channel RFID-Based Finger Augmentation Devices for Tactile Internet. IEEE JOURNAL OF RADIO FREQUENCY IDENTIFICATION, 6, 209-217 [10.1109/JRFID.2022.3178348].
Naccarata, F; Bianco, Gm; Marrocco, G
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2108/310818
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