Module for measurement of CO2 concentration in exhaled air

Jaroslaw Puton; Tadeusz Palko; Andrzej Knap; Krzysztof Jasek; Boguslaw Siodlowski

doi:10.1117/12.517129

22 September 2003 Module for measurement of CO₂ concentration in exhaled air

Jaroslaw Puton, Tadeusz Palko, Andrzej Knap, Krzysztof Jasek, Boguslaw Siodlowski

Proceedings Volume 5124, Optoelectronic and Electronic Sensors V; (2003) https://doi.org/10.1117/12.517129
Event: Optoelectronic and Electronic Sensors V, 2002, Rzeszow, Poland

Abstract

The objective of this work consists in working out of a detection module for capnography (carbon dioxide concentration measurement in anaesthesiology and intensive care). The principle of operation of the module consists of the NDIR method. The basic assumption for construction of this model was using of directly modulated thermal IR source in it. A few models of IR sources were worked out. Their heaters were made from thick platinum layers and foil. Limits of modulation frequency for IR sources were greater than 30 Hz. The detection module consists of an optical part, analogue electronics and microprocessor system with a suitable program. The time dependent concentration of CO₂, end tidal concentration of CO₂, mean concentration of N₂O and breath frequency are output values of the detection module. Measurements are executed 30 times per second. The accuracy of CO₂ concentration measurement equals to 5%.

Citation Download Citation

Jaroslaw Puton, Tadeusz Palko, Andrzej Knap, Krzysztof Jasek, and Boguslaw Siodlowski "Module for measurement of CO₂ concentration in exhaled air", Proc. SPIE 5124, Optoelectronic and Electronic Sensors V, (22 September 2003); https://doi.org/10.1117/12.517129

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