This paper describes a novel integrated optic spacesuit atmospheric quality sensor to enhance astronaut safety by monitoring the spacesuit's closed environments. The integrated optic sensor (IOS) is made of self-calibrating miniaturized channel waveguide elements that monitor oxygen concentration in real time. Fabrication employs direct photolithographic writing of channel waveguides onto a photoactive porous glass matrix. The active channel waveguide is doped with an oxygen-sensitive fluorescent indicator. A compact phase flourometer measures relative fluorescent lifetime - a direct function of the oxygen partial pressure. In testing, the IOS chip demonstrated a response time of 5 seconds from 0 % to 100 % oxygen at STP.
Integrated optic sensor for spacesuit atmospheric quality
Integrierter optischer Sauerstoffsensor für die atmosphärische Zustandsüberwachung im Raumanzug
SAE Technical Papers ; 1-5
1996
5 Seiten, 8 Bilder, 7 Quellen
Conference paper
English
Integrated Optic Sensor for Spacesuit Atmospheric Quality
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