Method and system for distributed acoustic sensing
US10650648B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Sep 8, 2017 |
| Grant date | May 12, 2020 |
| Priority date | — |
| Expiry date | Sep 8, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08B29/20
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
Described herein is a method and system of distributed acoustic sensing, such as in an urban or metropolitan area involving a dedicated and established fibre optic communications network including a data centre. In general, the disclosed method and system includes the steps of (a) selecting an optical fibre cable installation having a path extending across a selected geographical area, the optical fibre cable installation including a bundle of optical fibres and forming part of a fibre-optic communications network, (b) determining characteristics associated with the optical fibre and/or the selected optical fibre installation, (c) transmitting outgoing light in the optical fibre, (d) receiving reflected light back scattered along the optical fibre, and (e) based on the reflected light and the determined characteristics, generating an alert signal representative of an acoustic event. The disclosed method and system is thereby configured to detect acoustic events near or within the selected geographical area.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.