Vibration sensing method and apparatus therefor
US5703295A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Nov 28, 1995 |
| Grant date | Dec 30, 1997 |
| Priority date | — |
| Expiry date | Nov 28, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S73/04
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A vibration sensing apparatus including an acceleration sensor 2 for outputting a sensing signal corresponding to a vibrating acceleration, a level discriminator 3 for generating an output when the output level of the signal from the acceleration sensor 2 exceeds a preset reference level, a display unit 4 for displaying the output of the level discriminator 3, a piezoelectric ceramic power generating unit 5 using piezoelectric ceramics for generating a charge when it is subjected to vibration, and a conversion unit 6 for converting the charge generated by the piezoelectric ceramic power generating unit 5 into DC power, the DC power being supplied to the level discriminator and to the display unit as power to be consumed by them.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.