Piezoelectric energy harvester and wireless switch including the same
US9876445B2 · kind B2 · utility
3Cited by
5References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 1, 2015 |
| Grant date | Jan 23, 2018 |
| Priority date | — |
| Expiry date | Aug 11, 2036 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY04S20/14
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Provided are a piezoelectric energy harvester and a wireless switch including the piezoelectric energy harvester. The wireless switch uses energy generated in a piezoelectric energy harvester as a source of driving power, thereby transmitting communications signals to an external electronic device without requiring a battery. In addition, the piezoelectric energy harvester generates displacement in a piezoelectric element through a magnetic force generated in a magnet, thereby generating a constant level of energy when generating the driving power.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.