METHOD OF REMOTE BREATH AND HEARTBEAT PARAMETRE MEASUREMENT Russian patent published in 2010 - IPC A61B5/08 A61B5/02 G01S13/00 

FIELD: medicine.

SUBSTANCE: invention refers to methods of examination of physiological functions in living organisms, particularly to radiolocation superbroadband methods of breath and heartbeat parametre diagnostics for patients. Method involves generation of periodic sequence of UHF radio impulses of definite duration, probing radio impulses, reference radio impulses and reference radio impulses phase-shifted by 90° against reference radio impulses. Probing radio impulses are radiated towards examined body part and received in reflected radio impulse intervals. Each reflected radio impulse is correlated with reference radio impulse with further separation of low frequency component of output correlation signals, corresponding to combination of signals caused by examined object movement and signal caused by immobile objects within radiation zone of probing impulses; and each reflected radio impulse is correlated with phase-shifted reference radio impulse with further separation of low frequency component of output correlation signals, corresponding to combination of signals caused by examined object movement and signal caused by immobile objects. Further, presence of signal corresponding to moving object is determined, including signal corresponding to object's chest movement with account of the possible object movement during probing radio impulse radiation, and presence of signal corresponding to chest movement is determined. Signal reflected from immobile objects in probing impulse radiation area is compensated, including substrate surface where the examined object is positioned. Signal corresponding to chest movement is detected, chest movement pattern in time is defined, and decimation and averaging of signal corresponding to chest movement is performed to provide required accuracy of breath and heartbeat parametre measurement. Signal caused by heartbeat is separated from signal corresponding to chest movement, and heartbeat rate is determined. Then signal caused by breath is separated from signal corresponding to chest movement, and breath rate is determined.

EFFECT: improved accuracy and reliability of breath and heartbeat parametre measurement due to enhanced phase sensitivity of diagnostics.

11 cl, 22 dwg