Optical fiber vibration measurement system in multiphase flows with related method to monitor multiphase flows
US-2017336248-A1 · Nov 23, 2017 · US
Fibre optic distributed sensing
US9739645B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9739645-B2 |
| Application number | US-201013509415-A |
| Country | US |
| Kind code | B2 |
| Filing date | Nov 11, 2010 |
| Priority date | Nov 13, 2009 |
| Publication date | Aug 22, 2017 |
| Grant date | Aug 22, 2017 |
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Abstract
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A method of distributed fiber optic sensing is described in which an optical fiber ( 104 ) is interrogated with electromagnetic radiation; back-scattered radiation is detected; and the returns are processed to provide a measurement signal ( 310 ) for each of a plurality of longitudinal sensing portions of the optical fiber. The method comprises analyzing the measurement signals of a first subset of longitudinal sensing portions to provide a first zone ( 306 a ) having a first sensing function and analyzing the measurement signals of at least a second subset of longitudinal sensing portions to provide at least a second zone ( 306 b ) having a second, different, sensing function. The different sensing functions may include detecting different events of interest. In some embodiments the geometry of the fiber may provide different sensing zones ( 406 a, 406 b ).
First claim
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The invention claimed is: 1. A method of distributed sensing comprising the steps of: interrogating an optical fiber with electromagnetic radiation; detecting electromagnetic radiation which is back-scattered from the optical fiber; processing said detected back-scattered radiation to provide a measurement signal for each of a plurality of longitudinal sensing portions of the optical fiber; and analysing the measurement signals from the longitudinal sensing portions to detec…
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Physics · mapped topic
- G01D5/35361Primary
Physics · mapped topic
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- What does patent US9739645B2 cover?
- A method of distributed fiber optic sensing is described in which an optical fiber ( 104 ) is interrogated with electromagnetic radiation; back-scattered radiation is detected; and the returns are processed to provide a measurement signal ( 310 ) for each of a plurality of longitudinal sensing portions of the optical fiber. The method comprises analyzing the measurement signals of a first subse…
- Who is the assignee on this patent?
- Hill David John, Mcewen-King Magnus, Optasense Holdings Ltd
- What technology area does this patent fall under?
- Primary CPC classification G01D5/35361. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Aug 22 2017 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).