comment on this article

Good vibrations from MEMS based energy harvester

A mechanical amplifier can convert ambient vibrations into electricity more effectively

A team from the University of Cambridge's Centre for Smart Infrastructure and Construction has developed a mechanical amplifier that can convert ambient vibrations into electricity more effectively.

The device is thought to have applications in condition monitoring of roads, bridges and tunnels, as well as powering wearable medical devices and extending the life of batteries in mobile phones.

While self powered batteryless devices are not new , they have two key technical limitations: low output power density; and the mismatch between the narrow operational frequency bandwidth of conventional energy harvesters and the wideband nature of vibrations experienced by bridges, tunnels and roads.

CSIC has addressed these issues by basing its harvester on a phenomenon known as parametric resonance. The energy harvesting device, consisting of a micro-cantilever structure and a transducer, can be created using MEMS technology. When force is applied to the cantilever perpendicular to the length instead of transversely, parametric resonance can be achieved, generating more energy from the same amount of vibration.

Prototypes of MEMS and macroscale devices based on these principles are said to have demonstrated a significantly improved power output and a wider operational bandwidth relative to current devices.

Author
Graham Pitcher

Comment on this article


This material is protected by MA Business copyright See Terms and Conditions. One-off usage is permitted but bulk copying is not. For multiple copies contact the sales team.

What you think about this article:


Add your comments

Name
 
Email
 
Comments
 

Your comments/feedback may be edited prior to publishing. Not all entries will be published.
Please view our Terms and Conditions before leaving a comment.

Related Articles

EEE Conference

The date for the 2017 Electrical and Electronic Equipment and the Environment ...

Get to market faster

A quick look at using Vicor's PFM and AIM in VIA packaging for your AC to Point ...

Risk management

Cyber crime is costing the world’s top ten economies more than $250billion per ...

Betting on the future

Last week, Tesla, the company best known for its electric cars, saw its stock ...

Hitting maturity?

From curved TVs to pop-up presentation screens a new wave of products are ...

A man with a plan

Cypress Semiconductor was formed in 1982 and went public in 1986. Until 2016, ...