Patent ID: 7472023
Filing Date: 2008-12-30
Classification: G01N

Abstract:
1. A gas analysis system, comprising: a FTIR (Fourier transform infrared) spectrometer; a signal transformation module operable to receive electronic signals corresponding respectively to a background interferogram and a sample interferogram corresponding to a sample gas from the FTIR spectrometer for further calculation to obtain an absorption spectrum of the sample gas according to the background interferogram and the sample interferogram; an unknown chemical analysis module operable to qualitatively analyze the sample gas according to the absorption spectrum alone to determine chemical species contained in the sample gas according to the absorption spectrum alone; a calibration model determination module operable to determine a calibration model according to the chemical species determined to be in the sample gas by the unknown chemical analysis module after the operation of the unknown chemical analysis module; and a gas concentration calculation module operable to calculate the gas concentration of the chemical species according to the absorption spectrum, the calibration model and a standard spectrum of the chemical species after the operations of the unknown chemical analysis module and the calibration model determination module.