| 摘要 |
The present invention concerns a gas analyzing system for the analysis of respiratory gases to and from a mammal. The gas analyzing system (10) comprises a light transmitter (11) which includes an IR-emitter adapted to emit at least one measuring beam (12), sad light transmitter being arranged to emit the measuring beam into a gas mixture (13) including the respiratory gases, a filter component (14) including a number of filters (14a,14b) having different transmission wavelength ranges, the filter component being arranged to position the filters such that the at least one measuring beam passes through the number of filters one at a time, a light receiver (16) including an IR-detector adapted to receive the measurement beam and to generate at least one measurement signal representative of an optical energy of the measurement beam, and a signal processing circuitry (20) adapted to receive the at least one measurement signal. The signal processing circuitry comprises a peak detector (22) and is adapted to determine an intensity measure of each identified peak using at least one predetermined estimation function. Furthermore, the intensities can be used to determine gas concentrations.
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