Optisches Messsystem und Verfahren zur Gasidentifizierung mittels Photoakustischer Wirkung

Details

Veröffentlichungs-Nr.

EP4726364

Anmeldetag

14. Oktober 2024

Veröffentlichung

15. April 2026

Rechtsraum

EP

IPC

G01N21/17, G01N29/24

Abstract

The invention relates to a system and method for identifying the concentration of a gas using the photoacoustic effect. The system comprises a gas cell for containing a gas sample, an excitation light source with amplitude and/or wavelength modulation that emits light matching an absorption line of the target gas, an optical waveguide sensor adjacent to the gas cell for measuring acoustic pressure, and a processing unit to determine gas concentration from the acoustic pressure. The method involves placing the gas sample in the gas cell, directing modulated light into the cell, inducing a photoacoustic effect by the interaction of light and gas, measuring acoustic pressure via the optical waveguide sensor, and using the processing unit to determine the gas concentration. This system and method enable precise and efficient gas identification based on photoacoustic signals.

Anmelder

Firma

Nederlandse Organisatie voor toegepast- natuurwetenschappelijk onderzoek TNO

Land

🇳🇱 Niederlande