This paper presents a sensorized belt with four fully integrated pressure-touch sensors. We propose a very-low complexity sensor able to measure a pressure variation (up to 4 MPa) and to identify with accuracy a contact event at around 10 kPa. The overall pressure/touch sensor integrates a transducer, based on piezo capacitive material, coupled with a read-out circuit designed around a ring-oscillator. This converts the capacitance variation of the transducer into a quasi-digital signal characterized by a frequency range of 36.3-270 kHz with a very low standard deviation (2.3 kHz) and a sensitivity of 2.2 Hz/Pa. The tight integration of the electronics with the transducer results in a very compact all-in-one sensor system (overall size is 20 mm × 20 mm × 10 mm). Further, a major benefit of a low complexity design is the low power consumption, measured to be ∼370 μW. Based on a quasi-digital approach (event-driven), the system is well suited for impulse-based wireless communication.

A quasi-digital pressure/touch sensor prototype for orbital targets contact event monitoring / Stoppa, M.; Ros, P. M.; Crepaldi, M.; Chiolerio, A.; Demarchi, D.. - 2016-:(2016), pp. 2843-2846. (Intervento presentato al convegno 2016 IEEE International Symposium on Circuits and Systems, ISCAS 2016 tenutosi a Montreal's Sheraton Centre, can nel 2016) [10.1109/ISCAS.2016.7539185].

A quasi-digital pressure/touch sensor prototype for orbital targets contact event monitoring

Ros P. M.;Demarchi D.
2016

Abstract

This paper presents a sensorized belt with four fully integrated pressure-touch sensors. We propose a very-low complexity sensor able to measure a pressure variation (up to 4 MPa) and to identify with accuracy a contact event at around 10 kPa. The overall pressure/touch sensor integrates a transducer, based on piezo capacitive material, coupled with a read-out circuit designed around a ring-oscillator. This converts the capacitance variation of the transducer into a quasi-digital signal characterized by a frequency range of 36.3-270 kHz with a very low standard deviation (2.3 kHz) and a sensitivity of 2.2 Hz/Pa. The tight integration of the electronics with the transducer results in a very compact all-in-one sensor system (overall size is 20 mm × 20 mm × 10 mm). Further, a major benefit of a low complexity design is the low power consumption, measured to be ∼370 μW. Based on a quasi-digital approach (event-driven), the system is well suited for impulse-based wireless communication.
2016
978-1-4799-5341-7
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11583/2858365