High-resolution digital seismic and gravity sensor and method
US8616054B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 6, 2008 |
| Grant date | Dec 31, 2013 |
| Priority date | — |
| Expiry date | May 17, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V1/184
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A high-resolution digital seismic and gravity sensor includes an inertial mass connected to one or more force-sensitive resonators. The weight of the inertial mass is substantially unloaded with a spring arrangement when exposed to the force of the static gravity field. Seismic accelerations applied to the base of the seismic and gravity sensor, or changes in the gravitational field, generate loads that are transmitted to force-sensitive resonators so that changes in resonant frequency are related to the applied load. The changes in resonant frequency are thus a measure of the seismic accelerations and gravitational field variations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.