Digital data recorder exempt of a site background noise
US6876927B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 24, 2000 |
| Grant date | Apr 5, 2005 |
| Priority date | — |
| Expiry date | Jun 18, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V1/247
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A standalone digital data recorder of site background noise, by seismological transducer, providing at least data H and V in the form of analog signals, includes an acquisition and analog/digital conversion card, which includes at least two analog channels and a digital output, each analog channel including an input, a programmable gain analog signal amplifier and a filter, an analog multiplexer being provided between the filters and an analog/digital converter; a user interface; a removable storage device for storing data, a drive unit for an operating program, which includes a unit for enabling recording conditions, recording and warning of the end of the recording.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.