Systems and methods for determining respiration information based on independent component analysis
OwnerPaul Stanley Addison, James Nicholas Watson +2inventors
InventorsPaul Stanley Addison, James Nicholas Watson, Jimmy Dripps, James Ochs
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Abstract
A patient monitoring system may receive a physiological signal such as a photoplethysmograph (PPG) signal. A plurality of respiration morphology signals may be determined from the PPG signal. Independent component analysis may be performed on the respiration morphology signals, resulting in a plurality of independent components. An independent component corresponding to a respiration source signal may be selected from the plurality of independent components. Respiration information such as respiration rate may be determined based at least in part on the selected independent component.
Claims20
A method comprising:
- receiving a photoplethysmograph (PPG) signal;
- processing, with processing equipment, the PPG signal to generate a plurality of respiration morphology signals;
- performing, with the processing equipment, independent component analysis on the plurality of respiration morphology signals to generate a plurality of independent components;
- selecting, with the processing equipment, an independent component that corresponds to a respiration source signal from the plurality of independent components;
- and
- determining, with the processing equipment, respiration information based at least in part on the selected independent component.
A non-transitory computer-readable storage medium, the computer-readable medium having computer program instructions recorded thereon for:
- receiving a photoplethysmograph (PPG) signal;
- processing the PPG signal to generate a plurality of respiration morphology signals;
- performing independent component analysis on the plurality of respiration morphology signals to generate a plurality of independent components;
- selecting an independent component that corresponds to a respiration source signal from the plurality of independent components;
- and
- determining respiration information based at least in part on the selected independent component.
A patient monitoring system comprising processing equipment configured to:
- receive a photoplethysmograph (PPG) signal;
- process the PPG signal to generate a plurality of respiration morphology signals;
- perform independent component analysis on the plurality of respiration morphology signals to generate a plurality of independent components;
- select an independent component that corresponds to a respiration source signal from the plurality of independent components;
- and
- determine respiration information based at least in part on the selected independent component.
Dependencies are inferred from the claim text.