The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 23, 2024
Filed:
Feb. 26, 2020
Hahn-schickard-gesellschaft Für Angewandte Forschung E. V., Villingen-Schwenningen, DE;
Daniel Biesinger, Villingen-Schwenningen, DE;
Achim Bittner, Heilbronn, DE;
HAHN-SCHICKARD-GESELLSCHAFT FÜR ANGEWANDTE FORSCHUNG E. V., Villingen-Schwenningen, DE;
Abstract
The invention relates, in a first aspect, to a photoacoustic spectroscope for analyzing gas, comprising an infrared emitter (), which can be modulated, an analysis volume (), which can be filled with gas, and a sound pressure detector. The sound pressure detector comprises a structure () capable of vibrating, an actuator and a measurement unit, wherein the actuator is configured to actively excite vibration of the structure () capable of vibrating and the measurement unit can measure the vibration properties of the structure () capable of vibrating, which measurement depends on the formation of the sound pressure waves. In an additional aspect, the invention relates to a method for analyzing gas, comprising the provision of a photoacoustic spectroscope for analyzing gas, irradiating the gas with infrared radiation, modulated by a modulation frequency, to generate sound pressure waves, exciting the structure () capable of vibrating at an excitation frequency, measuring the vibration properties of the structure () capable of vibrating, which measurement depends on the sound pressure, and determining the sound pressure of the gas based on the measured vibration properties.