Prototype Generator Harnesses Vibration Power

November 21st, 2008 by Ariel Schwartz

Omron Corp. recently debuted a small prototype generator that harnesses power from vibrations to create electricity. The model will be cheap—approximately $10.36— due to its simple structure and packaging.

Omron’s generator works with an “electret power generation system” that changes capacitance depending on the relative position of opposing electrodes. A change in capacitance generates electric current.

The prototype produces only 10μW of power with vibrational inputs at 20Hz frequency and 1G acceleration, which is not enough to continuously operate a cell phone.

But despite its minimal power-generating ability, there are important uses for the prototype. Omron plans on placing the generator in devices installed on highways to detect road problems. Eventually, the generator could be installed inside car tires for tire pressure monitoring since tires vibrate strongly during movement.

Stay tuned for a release date—Omron hasn’t yet said when the generator will be commercially available.

Photo Credit: Omron









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