Acceleration sensor, geophone, and seismic prospecting system
US10989733B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 8, 2016 |
| Grant date | Apr 27, 2021 |
| Priority date | — |
| Expiry date | Apr 15, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01P2015/0862
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Provided are acceleration sensor, geophone and seismic prospecting system with high sensitivity and low power consumption. The acceleration sensor includes a mass body displaceable with respect to a rotation shaft. The acceleration sensor includes a first AC servo control facing a first symmetrical region of the first movable portion, a second AC servo control electrode facing a second symmetrical region of the second movable portion, and a DC servo control electrode facing an asymmetrical region of the second movable portion. A first AC servo capacitive element is formed by the first movable portion and the first AC servo control electrode, a second AC servo capacitive element is formed by the second movable portion and the second AC servo control electrode, and a DC servo capacitive element is formed by the second movable portion and the DC servo control electrode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.