Akustisches Erfassungssystem, Verfahren und Computerprogrammprodukt

Details

Veröffentlichungs-Nr.

EP4796902

Anmeldetag

25. Februar 2025

Veröffentlichung

26. August 2026

Rechtsraum

EP

IPC

G01H9/00, G01D5/353

Abstract

The invention relates to an acoustic sensing system, comprising a sensing fiber [2] located in an environment [3], an interrogator module [4] connected to the sensing fiber for interrogating the sensing fiber using an incident light [I], and a detection module [5',5''] connected to the sensing fiber for detecting light reflected by the sensing fiber illuminated by the incident light. The system further comprises a high power optical pulse light source [7] connected to the sensing fiber for injecting a high power optical pulse therein. The sensing fiber is provided with an absorber structure [8] comprising material converting optical power from the high power optical pulse into a thermal expansion of the absorber structure resulting in a guided or interface acoustic wave [G] propagating along the sensing fiber towards the detection module. Further, the detection module is arranged for detecting light reflected by the sensing fiber affected by the guided or interface acoustic wave as a response to the high power optical pulse

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Firma

Nederlandse Organisatie voor toegepast- natuurwetenschappelijk onderzoek TNO

Land

🇳🇱 Niederlande

Fachgebiete