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Method and system for noise removal of optical plethysmography signals

A plethysmographic, optical technique, applied in the field of biomedical signal processing, which can solve the problems of insufficient noise removal, insufficient removal of undesired frequencies, insufficient estimation of vital data, etc.

Active Publication Date: 2021-08-06
TATA CONSULTANCY SERVICES LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing prior art solutions show the use of filters for noise cleaning of captured optical plethysmogram signals, which may not be sufficient for exhaustive noise cleaning and for removing undesired frequencies
Furthermore, such filtering may not be sufficient for estimating vital data such as blood pressure

Method used

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  • Method and system for noise removal of optical plethysmography signals
  • Method and system for noise removal of optical plethysmography signals
  • Method and system for noise removal of optical plethysmography signals

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Embodiment Construction

[0020] Exemplary embodiments are described with reference to the accompanying drawings. In illustrations, the left-most digit(s) of a reference number indicates the illustration in which the reference number first appears. Wherever convenient, the same reference numbers are used throughout the drawings to refer to the same or like parts. While examples and features of the disclosed principles are described herein, modifications, adaptations, and other implementations are possible without departing from the spirit and scope of the disclosed embodiments. It is intended that the following detailed description be considered exemplary only, with the true scope and spirit being indicated by the appended claims.

[0021] The disclosed embodiments are merely examples of the invention, which can be embodied in various forms.

[0022] The present invention enables a method and system for noise cleaning of a photoplethysmography (PPG) signal for estimating a user's blood pressure (BP)....

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Abstract

Methods and systems are provided for noise removal of photoplethysmography signals. Methods and systems are disclosed for noise removal of a photoplethysmography signal for estimating a user's blood pressure; wherein the photoplethysmographic signal is extracted from the user; the extracted photoplethysmographic signal is upsampled; the upsampled The photoplethysmographic signal is filtered; non-uniform baseline drift per cycle is removed from the upsampled and filtered photoplethysmographic signal; outlier cycles of the photoplethysmographic signal are removed and the photoplethysmographic The remaining period of the map signal is modeled; and temporal features are extracted from the original extracted photoplethysmogram signal and the modeled photoplethysmographic signal for estimating the user's blood pressure.

Description

[0001] priority claim [0002] This application claims priority from Indian Application No. 1684 / MUM / 2015 filed 27 April 2015, the entire contents of which are hereby incorporated by reference. technical field [0003] The present application relates generally to biomedical signal processing, and more particularly to methods and systems for noise removal of photoplethysmography (PPG) signals captured using mobile communication devices. Background technique [0004] The recent past has witnessed a tremendous growth in communication technology worldwide. As a result, communication devices have begun to replace manual human labor on a large scale. In particular, communication devices such as smart phones and applications for physiological sensing embedded therein are rapidly becoming popular in both developed and developing countries. Smartphone-based physiological sensing applications provide the elderly as well as the young with the opportunity to routinely detect numerous...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B5/0225A61B5/00H04L29/08H04M1/02
CPCA61B5/02255A61B5/72A61B5/7203A61B5/7225A61B5/7235H04L67/12H04M1/0202H04M1/026A61B5/6898A61B5/7264A61B5/02438A61B5/14551A61B5/0059A61B5/021G06T5/20G06T7/0012G06T2207/10016G06T2207/20182G06T2207/30104G06T5/70A61B5/7246A61B5/0077A61B5/02116A61B5/7278
Inventor 洛汗·班纳吉雅尼班·杜塔·周赫礼阿尼努达·辛哈艾维克·戈塞亚潘·帕尔
Owner TATA CONSULTANCY SERVICES LTD
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