Method for detecting breathing state during pulse oxygen supply

A technology of breathing state and detection method, which is applied to respirators and other directions, and can solve problems such as the accuracy of breathing state detection

Inactive Publication Date: 2009-09-30
JIANGSU OXTEK AIR EQUIP & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, there are always some technical defects in the previous pulse oxygen supply technology, that is, the accuracy of respiratory state detection

Method used

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  • Method for detecting breathing state during pulse oxygen supply
  • Method for detecting breathing state during pulse oxygen supply
  • Method for detecting breathing state during pulse oxygen supply

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Embodiment Construction

[0023] The present invention detects the breathing pressure of the user through the pressure sensor. When the user breathes, the pressure in the tube will change. The pressure sensor detects negative pressure when inhaling, and detects positive pressure when exhaling. The pressure signal of the pressure sensor is output from the pin in the form of voltage, and the change of voltage corresponds to the change of breathing pressure.

[0024] according to figure 1 , the hardware circuit part of the present invention includes: a pressure sensor 1 detection circuit, a signal amplification circuit 2, an analog-to-digital conversion 3, a voltage stabilizing circuit 4, an alarm circuit 6 and a main control chip 5;

[0025] Considering the measurement accuracy, the signal output by the pressure sensor 1 is amplified by the proportional amplifier circuit 2, and the amplified voltage signal is transmitted to the analog-to-digital conversion port 3 of the main control chip 5, and then sen...

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Abstract

The invention belongs to the field of oxygen supply, and relates to a method for detecting breathing state during pulse oxygen supply. The method is characterized by comprising the following steps: detecting breathing pressure by using a pressure sensor; judging the breathing state by using a three-point pressure detection method; and performing correction by using a pressure detection lag method and a breathing experience judgment method as aiding methods so as to improve the accuracy for judging the breathing state. A voltage signal output by the pressure sensor is amplified by a signal amplification circuit, the amplified voltage signal is transmitted to an analog-digital conversion port of a main control chip and is transmitted to the main control chip after the analog-digital conversion, and the main control chip judges the breathing state through the method for detecting the breathing state; and a high-degree voltage regulator circuit supplies high-precision reference voltage to the analog-digital conversion so as to eliminate incorrect judgment caused by jitters of the reference voltage and improve the accuracy for judging the breathing state; and besides, the oxygen supply frequency is completely determined by a breather so as to eliminate phenomena of missed blowout and continuous blowout.

Description

technical field [0001] The invention belongs to the field of oxygen supply and relates to a method for detecting breathing state during pulse oxygen supply. Background technique [0002] Pulse oxygen supply is a new oxygen supply method developed in recent years, which can realize automatic oxygen supply during inhalation and stop oxygen supply during exhalation. First of all, pulse oxygen inhalation only sprays oxygen at the initial stage of the patient's inhalation, and there will never be a "hedging phenomenon" of nasal catheter oxygen supply when the patient exhales. Secondly, pulse oxygen inhalation ensures that the patient no longer inhales invalid dry gas at the end of oxygen inhalation, and does not need to apply a humidification bottle when supplying oxygen, which protects the respiratory tract and makes the patient less prone to infection. [0003] However, there are always some technical defects in the previous pulse oxygen supply technology, that is, the accurac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61M16/00
Inventor 刘应书侯庆文金鑫林征宇曹永正刘文海张辉李永玲钱斌
Owner JIANGSU OXTEK AIR EQUIP & TECH
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