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Proceedings Paper

Compact spectroscopic sensor for air quality monitoring in spacecrafts
Author(s): Benjamin Scherer; Hakim Hamid; Jürgen Rosskopf; Siamak Forouhar
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Paper Abstract

The air quality of any manned spacecraft needs to be continuously monitored in order to safeguard the health of the crew. Any fire event, accidental release of harmful gaseous contaminants or a malfunction in the air revitalization system has to be detected as fast as possible to provide enough time for the crew to react. In this paper, a fast sensor system based on laser spectroscopy is presented, which is able to detect three important gases: carbon monoxide for fire detection, hydrogen chloride for fire characterization and oxygen to monitor the air vitalization system. To provide a long maintenance-free operation time without the need for any consumables except power, a calibration-free measurement method was developed, which is only based on molecule specific constants which are available from the molecular data base HITRAN. The presented sensor offers the possibility for reliable and crosssensitivity-free air quality monitoring over a large pressure and temperature range.

Paper Details

Date Published: 24 January 2011
PDF: 14 pages
Proc. SPIE 7945, Quantum Sensing and Nanophotonic Devices VIII, 79450S (24 January 2011); doi: 10.1117/12.875237
Show Author Affiliations
Benjamin Scherer, Fraunhofer Institute for Physical Measurement Techniques (Germany)
Hakim Hamid, Fraunhofer Institute for Physical Measurement Techniques (Germany)
Jürgen Rosskopf, VERTILAS GmbH (Germany)
Siamak Forouhar, Jet Propulsion Lab. (United States)


Published in SPIE Proceedings Vol. 7945:
Quantum Sensing and Nanophotonic Devices VIII
Manijeh Razeghi; Rengarajan Sudharsanan; Gail J. Brown, Editor(s)

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