Bandwidth enhancing liquid coupled piezoelectric sensor apparatus and method of use thereof
US9256001B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 14, 2011 |
| Grant date | Feb 9, 2016 |
| Priority date | — |
| Expiry date | May 5, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/42
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Sensors used in mapping strata beneath a marine body are described, such as in a flexible neutrally buoyant towed array. A first sensor is a motion sensor including a conductive liquid in a chamber between a rigid tube and a piezoelectric motion film circumferentially wrapped about the tube. The liquid transfer signal from a gravitational bottom of the sensor while rejecting water body surface reflected noise. A second sensor is a traditional acoustic sensor or a novel acoustic sensor using a piezoelectric sensor mounted with a thin film separation layer of flexible microspheres on a rigid substrate. Combinations of motion sensors and acoustic sensors co-located in a rigid streamer housing sections are provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.