On energy harvesting from ambient vibration

On energy harvesting from ambient vibration

Future MEMS devices will harvest energy from their environment. One can envisage an autonomous condition monitoring vibration sensor being powered by that same vibration, and transmitting data over a wireless link; inaccessible or hostile environments are obvious areas of application. The base excitation of an elastically mounted magnetic seismic mass moving past a coil, considered previously b...

Electromagnetic energy harvesting from flow induced vibration

A new electromagnetic energy harvester for harnessing energy from flow induced vibration is developed. It converts flow energy into electrical energy by fluid flow and electromagnetic induction. A finite element model for estimation of the generated voltage of the energy harvester is developed. A prototype of the energy harvester is fabricated and tested. Experimental results show that an outpu...

A Hybrid Technique of Energy Harvesting from Mechanical Vibration and Ambient Illumination

Effect of packaging pressure on energy harvesting from vibration source

In this paper, we have studied the effect of air pressure damping on the vibrationbased energy harvesting devices. The device we used is an electrostatic energy harvester with an out-of-the-plane gap closing scheme. A broadened bandwidth is observed at 4 Pa when the acceleration is increased from 0.5 m/s. A power output of 2.2 μW is achieved at the air pressure of 4 Pa when a low acceleration o...

Energy harvesting – small scale energy production from ambient sources

Energy harvesting – the collection of otherwise unexploited energy in the local environment – is attracting increasing attention for the powering of electronic devices. While the power levels that can be reached are typically modest (microwatts to milliwatts), the key motivation is to avoid the need for battery replacement or recharging in portable or inaccessible devices. Wireless sensor netwo...