Title :
Miniaturized capnometer sensor based on the ionization quenching effect
Author :
Keppner, Herbert ; Depeyre, Jocelyne ; Staderini, Enrico M.
Author_Institution :
Ecole d´Ing. de l´Arc Jurassien, Western Switzerland Univ. of Appl. Sci. HES-SO, Chaux de Fonds, Switzerland
Abstract :
A novel carbon dioxide sensor for biomedical use exploits the effect of quenching of oxygen ionization due to the presence of CO2. During the development of an optical emission spectroscopy gas analyzer, it was noted that the presence of carbon dioxide was decreasing the whole optical emission due to oxygen also present in the gas mixture. This effect can be used for measuring carbon dioxide in expired breath. A prototype was built for assessing the feasibility of the concept, with good results. The system can be run on very low power and can be effectively miniaturized.
Keywords :
biochemistry; biomedical electronics; biomedical equipment; biomedical measurement; carbon compounds; gas mixtures; gas sensors; ionisation; low-power electronics; optical sensors; oxygen; photoluminescence; pneumodynamics; prototypes; radiation quenching; spectrochemical analysis; CO2; O2; biomedical carbon dioxide sensor; capnometer sensor miniaturization; carbon dioxide measurement; expired breath measurement; gas mixture; ionization quenching effect; low power system; optical emission spectroscopy gas analyzer; oxygen ionization quenching; prototype; Biomedical optical imaging; Carbon dioxide; Discharges (electric); Optical filters; Optical sensors; Prototypes; Stimulated emission; capnometer; expired breath; indirect calorimeter; optical emission spectroscopy;
Conference_Titel :
Biomedical Circuits and Systems Conference (BioCAS), 2014 IEEE
Conference_Location :
Lausanne
DOI :
10.1109/BioCAS.2014.6981808
