Portable unit for metabolic analysis
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.
United States of America as Represented by the Administrator of National Aeronautics and Space Administration
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A61B A61B G01N A61B A61B A61B A61B A61B A61B A61B A61B
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Russel W. Dale M. Michael J. Jeffrey R. Mark E. Daniel L. Richard D Nancy C. Peter M.
Valentine Diedrick Lichter Juergens Lewis Dietrich Pettegrew Piltch Struk