Abstract
We propose a polymer electret based energy harvesting device in order to extract energy from vibration sources with low acceleration. With MEMS technology, a silicon structure is fabricated which can resonate in 2D directions. Thanks to the excellent mechanical properties of the silicon material, the proof mass could be successfully driven by an external vibrations with acceleration as low as 0.014g (∼0.14 m/s2). A root mean square (RMS) power output of 1.17μW under 0.014g RMS acceleration at 75Hz is measured when an optimal load of 20.3 MΩ is applied. The frequency response of the device is also studied and a high Q factor of 250 is achieved.
Original language | English |
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Journal | Procedia Engineering |
Volume | 47 |
Pages (from-to) | 770-773 |
ISSN | 1877-7058 |
DOIs | |
Publication status | Published - 2012 |
Event | Eurosensors 2012: 26th European Conference on Solid-State Transducers - Krakow, Poland Duration: 9 Sept 2012 → 12 Sept 2012 Conference number: 26 |
Conference
Conference | Eurosensors 2012 |
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Number | 26 |
Country/Territory | Poland |
City | Krakow |
Period | 09/09/2012 → 12/09/2012 |
Keywords
- MEMS
- Micro generator
- Energy harvesting device
- Wireless sensor networks