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Method for improving measurement accuracy of measurement system as well as system thereof

A measurement system and measurement accuracy technology, applied in the field of blood oxygen measurement, can solve problems such as inability to measure, unsatisfactory performance, and affecting applications, and achieve the effects of effectively removing interference, eliminating low-frequency interference, and improving sampling accuracy

Active Publication Date: 2019-09-03
SHENZHEN NAVIG BIO MEDICAL TECH CO LTD
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

Manufacturers of other blood oxygen parameters, such as Nellcor, Mindray, etc., due to flaws in their system design, have unsatisfactory performance in scenarios such as hypothermia patients, heavy infants, and dying patients, and cannot meet the requirements for accurate measurement in clinical practice
For example, Mindray, although it adopts the industry's advanced TI sampling integrated chip AFE series, due to the irrationality of its system design, when the perfusion index is lower than 0.1%, its measurement accuracy gradually deviates, or even cannot Measurement, which seriously affects the application of special scenarios common in clinical

Method used

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  • Method for improving measurement accuracy of measurement system as well as system thereof
  • Method for improving measurement accuracy of measurement system as well as system thereof
  • Method for improving measurement accuracy of measurement system as well as system thereof

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Embodiment Construction

[0045] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0046] Please refer to figure 2 , the blood oxygen measurement system 100 applied to the method of improving the measurement accuracy of the measurement system in the present invention includes

[0047] Light emitting unit 10, photoelectric conversion unit 20, A / D analog-to-digital conversion unit 30, drive adjustment unit 40, algorithm processing unit 50, communication unit 60 and display unit 70, A / D analog-to-digital conversion unit 30 and photoel...

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Abstract

The invention discloses a method for improving the measurement accuracy of a measurement system as well as a system thereof, which can be applied to measurement of physiological parameters such as blood oxygen saturation, and a core of the method for improving the measurement accuracy of the measurement system is to optimize a sampling system, the noise is suppressed from the source, the useful signal is improved to achieve the purpose of improving the measurement accuracy of the system, the core consists of three phases: 1) filtering a carrier signal to eliminate high-frequency interference;2) adaptively adjusting the amplitude and pulse width of a modulated signal to obtain the best signal-to-noise ratio; and 3) performing adaptive smooth filter on the demodulated signal to eliminate low frequency interference. The method improves the measurement accuracy of the measurement system.

Description

technical field [0001] The invention relates to the technical field of blood oxygen measurement, in particular to a method and system for improving the measurement accuracy of a measurement system. Background technique [0002] Oxygen is the most important energy for sustaining life. Like food and water, it is one of the most basic elements of human health. Hypoxia is an imbalance between the body's oxygen supply and oxygen consumption, that is, the metabolism of tissue cells is in a state of hypoxia. Whether the body is hypoxic depends on whether the oxygen transport volume accepted by each tissue and the oxygen reserve can meet the needs of aerobic metabolism. The harm of hypoxia is related to the degree of hypoxia, the speed of occurrence and the duration. Hypoxia has a huge impact on the body. Such as the impact on the central nervous system (CNS), liver and kidney function. The first thing that occurs in hypoxia is a compensatory acceleration of heart rate, increas...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/1455A61B5/00
CPCA61B5/14551A61B5/7203
Inventor 方进张晓毳
Owner SHENZHEN NAVIG BIO MEDICAL TECH CO LTD
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