Sensor system

US11460329B2 · kind B2 · utility

Assignee

• LUNA INNOVATIONS GERMANY GMBH · DE

Inventors

• Benjamin Marx · Cologne, DE
• Alexander Rath · Cologne, DE
• Wieland Hill · Odenthal, DE
• Stefan Breuer · Cologne, DE

Key dates

• Filing date: Mar 26, 2019
• Grant date: Oct 4, 2022
• Expiry date: Mar 26, 2039

Classification

• Technology area (CPC G): Physics
• CPC primary: G01K11/3206
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A sensor system for detection and localisation of changes in or values for at least one environmental condition includes a source of pulses of electromagnetic radiation, wherein the source is configured to emit electromagnetic radiation at a plurality of different wavelengths, an optical fibre in optical communication with the source of pulses, wherein the optical fibre includes a fibre Bragg grating having a reflectance and/or transmittance which varies in dependence on the at least one environmental condition, and a detection unit for detecting electromagnetic radiation which has been reflected or transmitted by the fibre Bragg gratings, wherein the detection unit is configured for detecting electromagnetic radiation at the plurality of wavelengths, such that a spectral response can be determined for different spatial regions along the optical fibre, wherein a change in or value for the environmental condition at a spatial region may be determined by monitoring the respective spectral response.