Signal added vibration transducer
US4872348A · kind A · utility
10Cited by
18References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 28, 1988 |
| Grant date | Oct 10, 1989 |
| Priority date | — |
| Expiry date | Jan 28, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01P15/11
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A transducer for measuring vibrations is formed of a case with a vibratory element mounted therein by means of a disk spring which is constrained to vibrate with the vibratory element in a single direction. Optical or magnetic sensors are located in registration with opposed ends of the vibratory element to produce optically or magnetically induced signals having a modulation thereon resulting from vibration of the vibratory element. The use of pairs of the sensors improves signal-to-noise ratio while allowing for increased bandwidth of the transducer in the measurement of vibration.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.