Piezo-powered floating gate injector for self-powered fatigue monitoring in biomechanical implants

Nizar Lajnef, Shantanu Chakrabartty, Niell Elvin, Alex Elvin

Research output: Contribution to journalConference articlepeer-review

13 Scopus citations

Abstract

In this paper we describe an implementation and modeling of a novel fatigue monitoring sensor based on integration of piezoelectric transduction with floating gate avalanche injection. The miniaturized sensor enables continuous battery-less monitoring and failure predictions of biomechanical implants. Measured results from a fabricated prototype in a 0.5μm CMOS process demonstrate excellent agreement with the theoretical model in computing cumulative statistics of electrical signals generated by the piezoelectric transducer. The power dissipation of the sensor is less than 1μW which makes it attractive for integration with biocompatible poly-vinylidene diflouride (PVDF) based transducers.

Original languageEnglish
Article number4252578
Pages (from-to)89-92
Number of pages4
JournalProceedings - IEEE International Symposium on Circuits and Systems
DOIs
StatePublished - 2007
Event2007 IEEE International Symposium on Circuits and Systems, ISCAS 2007 - New Orleans, LA, United States
Duration: May 27 2007May 30 2007

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