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Proceedings 2017, 1(4), 593; doi:10.3390/proceedings1040593

Dual Mode Pressure Sensing for Lower-Limb Prosthetic Interface

1
Dept. of Industrial Engineering, University of Trento, Trento, Italy
2
Center for Materials and Microsystems, Fondazione Bruno Kessler, Trento, Italy
Presented at the Eurosensors 2017 Conference, Paris, France, 3–6 September 2017.
*
Author to whom correspondence should be addressed.
Published: 22 August 2017
Download PDF [817 KB, uploaded 11 October 2017]

Abstract

We present an electronic sensory system capable of measuring both dynamic and static normal pressure to monitor the pain and stress felt by amputees on contact points between residual limb and prosthesis’ sockets. Monitoring the contact forces is crucial to ease the prosthesis customization process and to reduce the pain for the final user. We propose a novel design of a sensing unit that exploits jointly piezoelectric and piezoresistive materials to detect and to discriminate dynamic and static stimuli, and a digitally controlled amplification circuit that permits the signal acquisition from both kind of transducers with low cost microcontroller. Results demonstrate that our design provides valuable information at 1 ksps rate with a global power consumption lower than 25 mW.
Keywords: smart prosthesis; force mapping; piezoelectric sensors; piezoresistive sensors; joint piezo readout; embedded systems smart prosthesis; force mapping; piezoelectric sensors; piezoresistive sensors; joint piezo readout; embedded systems
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Rossi, M.; Nardello, M.; Lorenzelli, L.; Brunelli, D. Dual Mode Pressure Sensing for Lower-Limb Prosthetic Interface. Proceedings 2017, 1, 593.

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