Device, system and method for obtaining a vital signal of a subject

Gerard de Haan (Inventor), A.C. (Bert) den Brinker (Inventor), Wenjin Wang (Inventor)

Research output: PatentPatent publication

Abstract

The present invention relates to a device, system and method for obtaining a vital signal of a subject. To achieved increased robustness against motion, the device comprises a decomposition unit (12) for performing a spectral decomposition of at least two photoplethysmography detection signals being related to a physiological property of the subject and allowing extraction of a vital sign of the subject to obtain two or more spectral components of the detection signals. A weight is determined per spectral component based on an estimate of the relevance of the respective spectral component to the vital sign, derived from a characteristic of said spectral component. Finally, a vital sign is obtained by weighting at least part of the spectral components with the determined corresponding weight and extracting a vital sign from the weighted spectral components or by extracting two or more vital sign sub-signals from individual spectral components of the at least two detection signals and, weighting the extracted vital sign sub-signals with the determined weight of the corresponding spectral component, and extracting a vital sign from the weighted vital sign sub-signals
Original languageEnglish
Patent numberUS20200037902
Priority date27/10/16
Filing date23/10/17
Publication statusPublished - 6 Feb 2020

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