公开(公告)号：US20240085314A1

公开(公告)日：2024-03-14

申请号：US18262361

申请日：2022-01-19

Applicant: ELICHENS

Inventor： Pierre Jallon

IPC: G01N21/31 ,  G01N33/00

CPC classification number: G01N21/31 ,  G01N33/0006 ,  G01N2201/127

Abstract: In a method for calibrating a gas sensor—for determining a gaseous species concentration in a gas, which species absorbs light in an absorption spectral band—the gas sensor includes a chamber for containing the gas; a light source through which a supply electrical current is passable to raise the light source to a temperature; a measurement photodetector for measuring—in a measurement spectral band comprising the absorption spectral band—a measured intensity of a light beam emitted by the light source and transmitted by the gas in the chamber; and a reference photodetector for measuring a reference intensity of a reference light beam emitted by the light source in a reference spectral band. A non-linear calibration function is determined to estimate an intensity, measured in the measurement spectral band by the measurement photodetector in the absence of gaseous species, from a reference intensity measured in the reference spectral band.