Optical fibre distributed LHD with SMA element for discrete alarm
US9429480B2 · kind B2 · utility
6Cited by
13References
13Claims
0Family size
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Key dates
| Filing date | Jan 10, 2014 |
| Grant date | Aug 30, 2016 |
| Priority date | — |
| Expiry date | Oct 15, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01K11/324
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A temperature sensing system 10 comprises an optical waveguide 102, a shape memory alloy (SMA) element 106a, and an interrogator 12. The SMA element 106a is deformable as a function of temperature and at least partially surrounds the optical waveguide 102. The interrogator 12 is configured to detect distributed temperature along the optical waveguide 102 using spectroscopy and to detect strain in the optical waveguide 102 induced by deformation of the SMA element 106a to identify local hot spots along the optical waveguide 102.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.