Noninvasive triglyceride estimation system based on PPG signal

Abstract

The invention discloses a noninvasive triglyceride estimation system based on PPG signals, the system comprising: a data acquisition module for acquiring PPG signals, sample data comprising patient fingertip PPG signals acquired by a professional sensor, and recording triglyceride indexes corresponding to patients; a data preprocessing module used for carrying out single-cycle segmentation on the collected fingertip PPG signals and removing invalid samples measured due to interference of movement, light and the like; a neural network building module used for building a convolutional neural network for training and prediction; and a model training module used for substituting a part of the sample data into the convolutional neural network for training, updating network weight parameters, obtaining a trained neural network model, and taking the other part of reserved samples as a test for prediction analysis. According to the method, the average absolute error of prediction of samples is small, accurate measurement of a triglyceride index can be realized, and the system is noninvasive, convenient, stable and effective.

Description

technical field [0001] The invention belongs to the technical field of physiological parameter measurement, and in particular relates to a noninvasive triglyceride estimation system and method based on PPG (photoplethysmography, PPG for short) signals. Background technique [0002] Blood lipid is the general term for triglycerides and lipids in plasma, which are widely present in the human body. Determination of serum triglycerides is a routine item in blood lipid analysis. Triglycerides are lipids formed by glycerol and three fatty acids, which participate in the metabolic process of various energy in the human body. Under normal circumstances, triglycerides in plasma maintain a dynamic balance. [0003] Triglyceride value is one of the vital signs with important clinical significance. Hypertriglyceridemia can form thrombus, leading to blood vessel blockage, and is an important risk factor for cardiovascular diseases such as coronary heart disease, myocardial infarction, a...

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Problems solved by technology

[0007] In view of the above defects or improvement needs of the existing methods, the purpose of the present invention is to provide a non-invasive triglyceride estimation system based on PPG signals, which can realize non-invasive detection of triglycerides with stable results and high accuracy, thereby solving the current problem. The cumbersome and uncomfortable problems of invasive triglyceride detection in existing technologies

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