SYSTEMS AND METHODS FOR DETERMINING RESPIRATION INFORMATION USING PHASE LOCKED LOOP
摘要
A patient monitoring system may receive a physiological signal such as a photoplethysmograph (PPG) signal that exhibits frequency and amplitude modulation based on respiration. A phase locked loop may generate a frequency demodulated signal and an amplitude demodulated signal from the PPG signal. An autocorrelation sequence may be generated for each of the frequency demodulated signal and the amplitude demodulated signal. The autocorrelation sequences may be combined and respiration information may be determined based on the combined autocorrelation sequence.
申请公布号
WO2013103861(A1)
申请公布日期
2013.07.11
申请号
WO2013US20338
申请日期
2013.01.04
申请人
COVIDIEN LP;DRIPPS, JAMES;OCHS, JAMES;ADDISON, PAUL