We present the development of a semiconductor diode laser spectral absorption based gas species sensor for oxygen concentration measurements, intended for life support system monitoring and control applications. Employing a novel self-compensating, noise cancellation detection approach, we experimentally demonstrate better than 1% accuracy, linearity, and stability for monitoring breathing air conditions with 0.2 second response time. We also discuss applications of this approach to CO2 sensing.
Diode-Laser Spectral Absorption-Based Gas Species Sensor for Life Support Applications
Sae Technical Papers
International Conference On Environmental Systems ; 1997
1997-07-01
Conference paper
English