Patent · US Active

Gas concentration detection by means of thermoacoustic sound wave

US11635410B2 · kind B2 · utility

0Cited by

3References

17Claims

0Family size

Assignee

Infineon Technologies AG · DE

Inventors

Matthias Eberl · Schweinhub, DE
Franz Jost · Stuttgart, DE
Stefan Kolb · Unterschleißheim, DE

Key dates

Filing date	Aug 31, 2021
Grant date	Apr 25, 2023
Priority date	—
Expiry date	Aug 31, 2041

Classification

Technology area (CPC G)Physics
CPC primaryG01N2291/02809
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A gas sensor having a heater, a receiver, and a space arranged between the heater and the receiver, is described, the heater being configured to generate a thermoacoustic sound wave propagating through the space by using a stimulation signal. The receiver is in this case configured to receive the thermoacoustic sound wave that has propagated through the space and to convert it into a reception signal that has a time-of-flight-dependent shift with respect to the stimulation signal and therefore information relating to the gas concentration in the space.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.