Scott Thomas Mazar,Carlos A. Ricci,Vladimir V. Kovtun
申请号：
US16260631
公开号：
US20200237315A1
申请日:
2019.01.29
申请国别(地区):
US
年份:
2020
代理人:
摘要：
In one aspect, a computer-implemented method includes receiving signals corresponding to wavelengths of light detected by an optical sensor placed in proximity to a patient's body, and for each received signal: separating the signal into an AC signal and a DC signal； separating the AC signal into component signals； analyzing the component signals through a fractional phase transformation to identify a desired component signal and harmonic signals associated with the desired component signal； smoothing the desired component signal, the harmonic signals, and the DC signal； and combining the smoothed desired component signal, the smoothed harmonic signals, and the smoothed DC signal to generate a modulation signal. A modulation ratio signal is generated based on the modulation signals derived from the signals, and a peripheral oxygen saturation (SpO2) of the patient's body is determined based on the modulation ratio signal.
