FBG-based torsion sensor device
US11486777B2 · kind B2 · utility
1Cited by
4References
8Claims
0Family size
Assignee
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Key dates
| Filing date | Jul 10, 2019 |
| Grant date | Nov 1, 2022 |
| Priority date | — |
| Expiry date | Jul 23, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01L5/0061
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Embodiments relate to a torsion sensor device which measures a degree of torsion of a measurement object by using a fiber Bragg gratings (FBG) sensor, the sensor device comprising: an FBG sensor including a sensing unit formed in one section of an elongated optical fiber; and a fixing device for fixing and supporting the FBG sensor to cause displacement of the FBG sensor according to motion of the measurement object, wherein the fixing device includes a bending prevention member to enable the sensing unit to have torsion displacement without bending displacement, according to the motion of the measurement object.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.