Detecting circuit for a vibrating gyroscope
US5220833A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 26, 1991 |
| Grant date | Jun 22, 1993 |
| Priority date | — |
| Expiry date | Aug 26, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01C19/5649
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A detecting circuit according to the present invention is for detecting output of a vibrating gyroscope including a prism-shaped vibrator and piezoelectric elements formed on, at least, two side faces of the vibrator. The detecting circuit comprises an exciting signal generating circuit for exciting the vibrator by inputting the signal to the two piezoelectric elements of the vibrating gyroscope. The vibrating gyroscope bends and vibrates in response to the signal from the exciting signal generating circuit. A difference between the outputs of the two piezoelectric elements of the vibrating gyroscope is detected by a differential circuit. The output signal from the differential circuit is subjected to synchronous detection by a synchronous detecting circuit. Furthermore, when necessary, a phase adjusting circuit for adjusting phase of the output signal from the differential circuit is connected to the synchronous detecting circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.