Dynamic spectrum data processing method based on difference value extraction

Abstract

The invention discloses a dynamic spectrum data processing method based on difference value extraction and relates to the technical field of spectrum analysis. The dynamic spectrum data processing method comprises the steps of: synchronously acquiring photoelectric volume pulse waves under N wavelengths of a full-wave band of a part to be detected; setting a range of the number of interval points; extracting difference value dynamic spectrum groups corresponding to all numerical values SA within the range of the number of the interval points by adopting a difference value extraction method; and comparing the difference value dynamic spectrum groups corresponding to all numerical values SA and selecting a group with lowest dispersion degree, which serves as the final dynamic spectrum result after being subjected to superposition averaging. The dynamic spectrum data processing method can obtain a large amount of difference value dynamic spectra by virtue of difference value operation, fully utilizes experimental data, enhances computational efficiency, lowers experimental complexity, eliminates the dynamic spectrum with a gross error by virtue of the average effect of the differencevalue dynamic spectra during the elimination process of the gross error, greatly increases the signal to noise ratio of the dynamic spectra and improves the precision of detection on non-invasive blood constituents by the dynamic spectra.

Description

technical field [0001] The invention relates to the technical field of spectrum analysis, in particular to a dynamic spectrum data processing method based on difference extraction that can improve the precision and efficiency of dynamic spectrum analysis. Background technique [0002] Among the many non-invasive optical detection methods of blood components, transmission spectroscopy has obvious advantages over other spectral measurement methods, among which dynamic spectroscopy can theoretically eliminate the interference of optical backgrounds such as skin and fat on the measured arterial blood spectrum of the pulsating part . The basic principle of dynamic spectroscopy is to irradiate the finger with light in the visible and near-infrared bands to obtain photoplethysmography waves containing blood component information at each wavelength. A dynamic spectrum can be composed. Since the light absorption of pulsating arterial blood is much weaker than that of the tissue bac...

AI Technical Summary

Problems solved by technology

[0007] In order to solve the problems of low operation efficiency in the current dynamic spectrum frequency domain extraction method and the inability to effectively evaluate and overcome the influence of abnormal waveforms in the operation, as well as the difficulties in pulse wave positioning and complex operation in the time domain single-shot extraction method, the present invention provides a A kind of dynamic spectral data processing method based on difference value extraction, described method comprises the following steps:

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