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A device for improving the signal-to-noise ratio of blood absorption spectrum and its control method

A technology of absorption spectrum and blood, applied in the field of biomedical signal detection, can solve problems such as difficult to obtain photoelectric signals, achieve the effect of solving insufficient perfusion, improving intensity and signal-to-noise ratio, and improving signal-to-noise ratio

Inactive Publication Date: 2014-10-15
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] It is of great value to use photoelectricity to measure biological tissue signals, especially the detection of photoelectric information of blood is of great clinical significance. The photoelectric pulse volume wave obtained by pulse can obtain blood information, but for insufficient perfusion, for example: Elderly people with poor heart function often find it difficult to obtain ideal photoelectric signals

Method used

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  • A device for improving the signal-to-noise ratio of blood absorption spectrum and its control method
  • A device for improving the signal-to-noise ratio of blood absorption spectrum and its control method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] The input optical signal module 6 takes an input optical fiber as an example, and the output optical signal module 7 takes an output optical fiber as an example for illustration.

[0040] The cuff 2 is connected to the air pump 1 and the deflation valve 4 respectively through the trachea 3; the air pump 1 pressurizes the cuff 2 through the trachea 3; the deflation valve 4 deflates the cuff 2; The input optical fiber and the output optical fiber are set, wherein the input optical fiber is set upward, and the output optical fiber is set downward. The data acquisition module 8 is connected to the input optical fiber and the output optical fiber respectively, and collects the photoelectric signal at normal filling level and the photoelectric signal at enhanced filling level.

Embodiment 2

[0042] The light-emitting diode is used as an example to introduce the optical signal module 6 , and the light-sensitive sensor is used as an example to describe the exported optical signal module 7 .

[0043] The cuff 2 is connected to the air pump 1 and the deflation valve 4 respectively through the trachea 3; the air pump 1 pressurizes the cuff 2 through the trachea 3; the deflation valve 4 deflates the cuff 2; Light-emitting diodes and photosensitive sensors are set, wherein the light-emitting diodes are set upwards, and the photosensitive sensors are set downwards. The data acquisition module 8 is connected to the light-emitting diodes and photosensitive sensors respectively to collect photoelectric signals at normal filling levels and photoelectric signals at enhanced filling levels.

[0044] A control method for improving the signal-to-noise ratio of blood absorption spectrum, see figure 2 , the method includes the following steps:

[0045] 101: Put the cuff 2 on the ...

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Abstract

The invention discloses a device for improving the signal to noise ratio of the blood absorption spectrum and a control method thereof. An oversleeve is connected respectively with an air pump and an air release valve through an air tube. The air pump pressurizes the sleeve through the air tube and deflates the sleeve through the air release valve. An import optical signal module and an export optical signal module are arranged at positions opposite to each other at the bottom of the nail of a finger. The import optical signal module is arranged upward and the export optical signal module is arranged downward. A data collecting module is respectively connected with the import optical signal module and the export optical signal module to collect a photoelectrical signal in a normal filling level and a photoelectrical signal in an enhanced filling level. The oversleeve is put on the upper end of the tested arm. The import optical signal module imports detection light and the export optical signal module exports an optical signal to obtain the difference of the photoelectrical signal and obtain the blood absorption spectrum with high signal to noise ratio according to the difference of the photoelectrical signal. The invention solves the problem of insufficient filling, obtains the ideal photoelectrical signal and improves the strength and the noise ratio of blood absorption spectrum.

Description

technical field [0001] The invention relates to the field of biomedical signal detection, in particular to a device for improving the signal-to-noise ratio of blood absorption spectrum and a control method thereof. Background technique [0002] It is of great value to use photoelectricity to measure biological tissue signals, especially the detection of photoelectric information of blood is of great clinical significance. The photoelectric pulse volume wave obtained by pulse can obtain blood information, but for insufficient perfusion, for example: Elderly people with poor heart function often find it difficult to obtain ideal photoelectric signals. Contents of the invention [0003] The present invention provides a device for improving the signal-to-noise ratio of blood absorption spectrum and its control method. The invention solves the problem of insufficient perfusion and obtains an ideal photoelectric signal; improves the intensity and signal-to-noise ratio of blood a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B5/1455
Inventor 林凌李刚
Owner TIANJIN UNIV
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