Energy Harvesting From Ambient Vibration For Remote Vibration Monitoring With A Self-powered Nanotube Based Sensor

Farbod Khoshnoud, Clarence W. de Silva, Houman Owhadi, Carlos E. Ventura

    Research output: Chapter in Book/Report/Conference proceedingConference contribution


    Harvesting energy from ambient vibration in the context of
    supplying power to a sensor for remote vibration monitoring is
    presented in this paper. The sensor is powered by the same
    vibration that is being measured. A transducer, which converts
    mechanical energy of the structural vibration to electrical
    energy, powers the system. The transducer which represents
    the energy supply component in the system is considered as an
    electro-magnetic scheme with a moving magnet and a coil.
    The power obtained from the harvested energy is supplied to a
    nano-electromechanical capacitive sensor. In this sensor,
    vibration sensing is carried out by detecting the oscillations of
    Carbon Nanotubes (CNTs). The CNTs are excited when they
    are subjected to a base motion corresponding to the measured
    vibration. Acquisition of the sensor signal is performed by a
    capacitance circuit, using the electric charge generated in the
    CNTs. A modulation in the CNT’s charge, due to changes in
    the capacitance, leads to a modulation in the CNT’s
    conductance. This device is particularly useful for precise and
    effective wireless sensing of vibration and structural condition
    monitoring in hostile or inaccessible environments with little
    or no maintenance.
    Original languageEnglish
    Title of host publicationProcs 2011 Canadian Congress of Applied Mechanics (2011 CANCAM)
    Publication statusPublished - 2011
    EventCanadian Congress of Applied Mechanics 2011 - Vancouver, Canada
    Duration: 5 Jun 20119 Jun 2011


    ConferenceCanadian Congress of Applied Mechanics 2011


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