Portable unit for metabolic analysis

Patent · 28 September 2021

OSTI ID:1840483

Dietrich, Daniel L.; Juergens, Jeffrey R.; Lewis, Mark E.; Piltch, Nancy C.; Lichter, Michael J.; Valentine, Russel W.; Diedrick, Dale M.; Pettegrew, Richard D.; Struk, Peter M.

A portable unit for metabolic analysis includes a manifold in fluid communication with a mouth of a test subject. A conduit extends from the manifold and defines a flow channel through which the breaths of the test subject travels. A carbon dioxide sensor is attached to the conduit. The carbon dioxide sensor includes an intermediate support housing enclosing a volume disposed along the flow channel to define a first part of the flow channel, an inner support housing attached to a first side of the intermediate support housing, a plurality of IR LEDs mounted to an interior surface of the inner support housing, an outer support housing attached to a second side of the intermediate support housing, and a photodetector attached to the outer support housing. The photodetector faces the flow channel and receives IR radiation emitted by the plurality of LEDs.

• Research Organization: National Aeronautics and Space Administration (NASA), Washington, DC (United States)
• Sponsoring Organization: USDOE; National Aeronautic and Space Administration (NASA)
• Assignee: United States of America as Represented by the Administrator of National Aeronautics and Space Administration (Washington, DC)
• Patent Number(s): 11,129,546
• Application Number: 16/056,153
• OSTI ID: 1840483
• Country of Publication: United States
• Language: English