Sagnac effect RF based electromagnetic gyroscope using pulsed excitation
US12050106B2 · kind B2 · utility
Inventors
Key dates
| Filing date | Jan 18, 2022 |
| Grant date | Jul 30, 2024 |
| Priority date | — |
| Expiry date | Sep 17, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01C19/721
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A novel and useful electronic gyroscope exploits the Sagnac resulting in a detectable phase or frequency shift when an electromagnetic wave travels inside a rotating medium. These shifts in phase or frequency are measured and used to determine the angular velocity of the rotating medium. Three such media can be positioned in mutually perpendicular planes to detect 3D rotational movement. At least one loop acts as an RF transmission media that accommodates simultaneous bidirectional propagation of RF signals while being capable of separating between signals counter propagating in two opposite directions through the use of a switching matrix. A switching matrix and loop buffer function to sample pulses, amplify them, and reinject them back into one of the loops. A time measurement unit functions to detect the time difference between the counter propagating pulses which is used to calculate the rotation rate of the loop.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.