Publication Date:
2019-07-12
Description:
Improved method of calibration of acoustic plethysmographic sensors involves acoustic-impedance test conditions like those encountered in use. Clamped aluminum tube holds source of sound (hydrophone) inside balloon. Test and reference sensors attached to outside of balloon. Sensors used to measure blood flow, blood pressure, heart rate, breathing sounds, and other vital signs from surfaces of human bodies. Attached to torsos or limbs by straps or adhesives.
Keywords:
PHYSICAL SCIENCES
Type:
LAR-14977
,
NASA Tech Briefs (ISSN 0145-319X); 17; 10; P. 28
Format:
text
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