Diode-Laser Spectral Absorption-Based Gas Species Sensor for Life Support Applications

Paper #:
  • 972388

Published:
  • 1997-07-01
Citation:
He, G., Bruce, L., and Shand, M., "Diode-Laser Spectral Absorption-Based Gas Species Sensor for Life Support Applications," SAE Technical Paper 972388, 1997, https://doi.org/10.4271/972388.
Pages:
8
Abstract:
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.
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