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Respiratory flow integrator with improved stability.

N S Deno·H L Barlett·E R Buskirk
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Abstract

A circuit was designed for integrating respiratory flow signals over time to produce volume signals. The circuit involves a simple integrator and three compensation subcircuits which control integrator drift caused by ambient temperature changes, flow signal base-line errors, and random signal errors. A functional unit built according to the circuit design requires initial adjustment, but no further adjustment before or during sustained use. Integration errors are typically less than 1%. The only flow signal requirements are that they be bidirectional and within the human physiological frequency range.

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HumansHyperventilationLungPhysical ExertionPulmonary VentilationRespiratory Function TestsJournal ArticleResearch Support, U.S. Gov't, P.H.S.

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N S Deno, H L Barlett, E R Buskirk. 1978. Respiratory flow integrator with improved stability.. https://doi.org/10.1152/jappl.1978.44.4.619

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