Vibration powered generators usually consist of a resonator which is used to amplify the vibration source, and a transducer mechanism which converts the energy from the vibrations into electrical energy. The transducer usually consists of a magnet and coil or a piezoelectric crystal.
Researchers at the University of Dayton are testing soft piezoelectric composites that show great promise as next-generation energy harvesting materials.
Vibration Energy Harvesting –
Omron Electronic Components is proud to introduce the new D7S Vibration Sensor.
Piezoelectric materials can convert untapped mechanical vibrations into electrical energy. Generating electricity from soft, stretchable materials would allow power generation from the movement of all kinds of objects, including our clothing. The research could provide a blueprint for designing and optimizing next-generation self-powered electronics.
Theoretically, all vibration energy can be converted into electrical energy. However, there are certain types of vibrations the are preferred when the intent is to power a sensor or monitoring system. They have the following characteristics:
A steady vibration (i.e. not random shocks)
A dominating frequency
Given that these two conditions are met, there is a strong possibility for us to harvest electricity and power the application at hand!