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Hazardous Gas Detection Sensor Using Broadband Light-Emitting Diode-Based Absorption Spectroscopy for Space Applications

Journal Article · · New Space
 [1];  [1];  [1];  [1];  [1];  [1];  [1];  [2];  [1];  [3];  [4]
  1. Univ. of Central Florida, Orlando, FL (United States)
  2. Federal Aviation Administration, Washington, DC (United States)
  3. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  4. Univ. of Central Florida, Orlando, FL (United States); Florida Space Inst., Orlando, FL (United States)
+ Show Author Affiliations
As space travel matures and extended duration voyages become increasingly common, it will be necessary to include arrays of early fire detection systems aboard spacefaring vessels, space habitats, and in spacesuits. As gasses that are relevant to combustion and pyrolysis have absorption features in the midinfrared range, it is possible to utilize absorption spectroscopy as a means of detecting and quantifying the concentration of these hazardous compounds. Within this work, a sensor for detecting carbon dioxide has been designed and tested autonomously on a high-altitude balloon flight. The sensor utilizes a 4.2-mm lightemitting diode source, amplitude modulation to characterize species concentrations, and frequency modulation to characterize ambient temperature. Future work will include expanding the sensor design to detect other gases, and demonstrating suborbital flight capability.
Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC05-00OR22725
OSTI ID:
1435270
Journal Information:
New Space, Journal Name: New Space Journal Issue: 1 Vol. 6; ISSN 2168-0256
Publisher:
Mary Ann Liebert, Inc.Copyright Statement
Country of Publication:
United States
Language:
English

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