Method of determining deformation in a structure
US10067013B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 26, 2014 |
| Grant date | Sep 4, 2018 |
| Priority date | — |
| Expiry date | Oct 25, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01M11/085
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method of determining deformation in a structure around which a sensing optical fiber is helically wound, includes performing a distributed measurement at a point along the fiber, to obtain a frequency gain spectrum at that point. Performing a distributed measurement includes, adjusting a pulse width of a pulse pump signal to achieve a predefined spatial resolution and providing the pulse pump signal with adjusted pulse width in the fiber to generate scattering, which is used to obtain the frequency gain spectrum. Identifying at least two curves which, when added together, best fit the frequency gain spectrum. Identifying the frequency at which peaks of the curves occur. Determining deformation in the structure by determining deformation in the fiber at the point using a frequency at which a peak of an identified curve occurs. The amount of deformation in the fiber corresponds to the amount of deformation in the structure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.