Abstract
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.
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 language | English |
|---|---|
| Title of host publication | Procs 2011 Canadian Congress of Applied Mechanics (2011 CANCAM) |
| Publication status | Published - 2011 |
| Event | Canadian Congress of Applied Mechanics 2011 - Vancouver, Canada Duration: 5 Jun 2011 → 9 Jun 2011 |
Conference
| Conference | Canadian Congress of Applied Mechanics 2011 |
|---|---|
| Country/Territory | Canada |
| City | Vancouver |
| Period | 5/06/11 → 9/06/11 |