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Proceedings Paper

Infrasonic energy harvesting for embedded structural health monitoring micro-sensors
Author(s): Chenling Huang; Nizar Lajnef; Shantanu Chakrabartty
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Paper Abstract

Many signals of interest in structural engineering, for example seismic activity, lie in the infrasonic range (frequency less than 20Hz). This poses a significant challenge for developing self-powered structural health monitoring 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 0.5- μm CMOS technology can compute and record level crossing statistics of an input infrasonic event with total current less than 10nA.

Paper Details

Date Published: 1 April 2010
PDF: 11 pages
Proc. SPIE 7647, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2010, 764746 (1 April 2010); doi: 10.1117/12.847328
Show Author Affiliations
Chenling Huang, Michigan State Univ. (United States)
Nizar Lajnef, Michigan State Univ. (United States)
Shantanu Chakrabartty, Michigan State Univ. (United States)


Published in SPIE Proceedings Vol. 7647:
Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2010
Masayoshi Tomizuka, Editor(s)

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