Infrasonic power-harvesting and nanowatt self-powered sensors

Shantanu Chakrabartty, Nizar Lajnef

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

10 Scopus citations


Many signals of interest in structural engineering, for example seismic activity, lie in the infrasonic range (frequency less than 20 Hz). This poses a significant challenge for developing batteryless sensors that are required not only to monitor rare infrasonic events but also to harvest the energy for sensing, computation and storage from the signal being monitored. In this paper, we show that a linear injection response of our previously reported piezo-floating-gate sensor is ideal for self-powered sensing and computation of infrasonic signals. Our experimental results demonstrate that the sensor fabricated in a 0.5μm CMOS technology can compute and record level crossing statistics of an input seismic event. Collected data are in good agreement with results obtained using a standard data acquisition system. Also, the sensor consumes less than 100nA of current, which makes its operation based on infrasonic power-harvesting feasible.

Original languageEnglish
Title of host publication2009 IEEE International Symposium on Circuits and Systems, ISCAS 2009
Number of pages4
StatePublished - 2009
Event2009 IEEE International Symposium on Circuits and Systems, ISCAS 2009 - Taipei, Taiwan, Province of China
Duration: May 24 2009May 27 2009

Publication series

NameProceedings - IEEE International Symposium on Circuits and Systems
ISSN (Print)0271-4310


Conference2009 IEEE International Symposium on Circuits and Systems, ISCAS 2009
Country/TerritoryTaiwan, Province of China


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