Methods and systems to determine a concentration of at least one individual gas present in a gas mixture and method for analyzing a gas mixture

摘要

Methods and systems to determine a concentration of at least one individual gas present in a gas mixture and method for analyzing a gas mixture that is a method to determine a concentration of at least one individual gas present in a gas mixture that Inc. Lui irradiating a first component through the light beams modulated events characterized by a band withDischarge of wave absorption determined, frequency modulation and amplitude modulation to generate first light beams transmitted, irradiating a second component comprising a determined concentration of at least one individual gas through the first beams. Modulated light incident to generate second light beams transmitted.Generate noise signals representing a characteristic of the first light beams transmitted to generate noise free signals representing a characteristic of the second light beams transmitted.To select a modulation frequency and a modulation amplitude ideal ideal from the modulation frequencies and the amplitudes of modulation based on the signals of the noise and the noise free signals.And determine a concentration of at least one individual gas in the mixture gas on the basis of the modulation frequency in ideal and modulation amplitude of the ideal range of wave length of absorption is determined.