Seismic data acquisition unit
US10281613B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 10, 2017 |
| Grant date | May 7, 2019 |
| Priority date | — |
| Expiry date | Jun 12, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V2200/12
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A wireless seismic data acquisition unit with a wireless receiver providing access to a common remote time reference shared by wireless seismic data acquisition units in a seismic system. The receiver can replicate local version of remote time epoch to which a seismic sensor analog-to-digital converter is synchronized. The receiver can replicate local version of remote common time reference to time stamp local node events. The receiver can be placed in a low power, non-operational state over periods of time during which the unit continues to record seismic data, thus conserving unit battery power. The system corrects the local time clock based on intermittent access to the common remote time reference. The system corrects the local time clock via a voltage controlled oscillator to account for environmentally induced timing errors. The system provides a more stable method of correcting drift in the local time clock.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.