Piezoelectric MEMS boosts vibration harvester
April 28, 2011 // R. Colin Johnson
Electrical engineers from the University of Michigan claim to have invented a technique for micro-machining piezoelectric MEMS that generate 10-times more energy than conventional energy harvesters. The research team said a penny-sized piezoelectric MEMS could generate enough electricity to power medical implants in the body and wireless sensors on motor vehicles.
The energy harvester market for wireless sensor networks is expected to $450 million by 2015, according to Erkan Aktakka, one of the system's developers, working in the lab of professor Erkan Aktakka, principle scientist on the project.
The team packaged its bulk micro-machined MEMS together with tiny circuit elements that form a complete vibration energy harvester in just 27 cubic millimeters. The tiny unit can harvest vibrational energy between 14-and-155 cycles-per-second (Hz) to produce about 200 microWatts from 1.5g vibrations. The energy harvester charges a supercapacitor to 1.85 volts, whereupon it powers-up the wireless sensor whose battery is it replacing. The researchers estimate the energy harvester could repeat this cycle for 10-to-20 years without degradation.
Details of the design will be revealed by the researchers in a presentation at Transducers 2011 (June 5-9, Beijing).
Funding was provided by the Defense Advanced Research Projects Agency and National Nanotechnology Infrastructure Network.
Self-contained energy harvester converts vibrations into electricity using bulk micromachined piezoelectrics.All news
CEO interview: Vicor powers after higher volume applications
November 26, 2014
Patrizio Vinciarelli, is one of the longest serving CEOs in electronics, having founded Vicor in 1981 and led the company ...
Wireless power receiver enables compact and efficient contactless battery charging
Advanced wheel hub drive passes extensive driving tests
CEO interview: Murata succumbs to IoT temptation
ZigBee Alliance unifies application standards for Internet of Things
Can Japan get her groove back with IoT?
November 25, 2014
Japan, which once looked like a world leader as it pushed its Home Energy Management System (HEMS) and the smart home standard, ...
Packing extra charges for those long travels
GalaxyCore develops 'through-silicon' image sensor
Intel, Sheldon Cooper promote 3D camera technology
- Power Systems Design eBook
- Halogen-free options and increased performance for terminal blocks
- Wireless Power User Guide
- Secure is the New Smart
InterviewCEO interview: Vicor powers after higher volume applications
Patrizio Vinciarelli, is one of the longest serving CEOs in electronics, having founded Vicor in 1981 and led the company ever since. At Electronica he told EE Times Europe that his company is investing ...
Filter WizardCheck out the Filter Wizard Series of articles by Filter Guru Kendall Castor-Perry which provide invaluable practical Analog Design guidelines.
Linear video channel
READER OFFERRead more
This month, Cherry is giving away five of its Energy Harvesting Evaluation kits, worth over 266 Euros each, for EETimes Europe's readers to win. Cherry's energy harvesting technology benefit mostly applications where a complex wire assembly and/or batteries would be inappropriate.
The required RF-energy is created by the mechanical actuation of the switch and the data is transmitted...MORE INFO AND LAST MONTH' WINNERS...
December 15, 2011 | Texas instruments | 222901974
Unique Ser/Des technology supports encrypted video and audio content with full duplex bi-directional control channel over a single wire interface.
Most popular news
- Could magnesium battery innovation end lithium's dominance?
- From warm to cool white: colour-temperature tunable LEDs
- Li-Fi communication module wirelessly transfers data at 1-Gbps
- Rebranding the revolution: the future of IoT is embedded
- Supercapacitor innovation promises panel-powered cars in five years