Unlock instant, AI-driven research and patent intelligence for your innovation.

Self-driven device for simultaneously detecting respiratory flow and humidity and preparation method thereof

A respiratory flow, self-driven technology, applied in the evaluation of respiratory organs, diagnostic recording/measurement, medical science, etc., can solve the unfavorable miniaturization and integration of devices, and the inability to simultaneously detect the exhaled gas flow and the target gas concentration of the exhaled gas, etc. question

Active Publication Date: 2021-05-18
UNIV OF ELECTRONICS SCI & TECH OF CHINA
View PDF7 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above two types of devices have disadvantages: since the friction film is exposed to the respiratory gas environment, it is impossible to simultaneously detect the exhaled gas flow and the target gas concentration of the exhaled gas (because the exhaled gas flow and the target gas are ultimately controlled by the output voltage of the generator. amplitude)
However, if two breathing driving devices are used to detect the above two breathing behaviors separately, it is not conducive to the miniaturization and integration of the device.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Self-driven device for simultaneously detecting respiratory flow and humidity and preparation method thereof
  • Self-driven device for simultaneously detecting respiratory flow and humidity and preparation method thereof
  • Self-driven device for simultaneously detecting respiratory flow and humidity and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Such as Figure 1 to Figure 6 As shown: the preparation process of a self-driven device that simultaneously detects respiratory flow and humidity provided by a preferred embodiment of the present invention is as follows:

[0035] (1) Take an acrylic substrate, wash it with ethanol and dry it, then cut and assemble it into a square test chamber.

[0036] (2) Use a flexible conductive carbon cloth as a conductive substrate, soak it in an aqueous dispersion of cellulose nanocrystals containing 5wt% LiCl, take it out after 1 hour, and dry it to obtain positive friction films I and II.

[0037] (3) A gold electrode was prepared on the surface of a flexible PET substrate by a thermal evaporation process, and the PTFE film was transferred to the electrode surface by a transfer process to obtain negative friction films I and II.

[0038](4) Paste the corresponding positive and negative friction films oppositely on the inner and outer walls of the balloon and the inner wall on ...

Embodiment 2

[0045] Such as Figure 7 As shown, the manufacturing process of a self-driven device for simultaneously detecting respiratory flow and humidity is substantially the same as that in Embodiment 1. The difference is that the negative friction film is attached to the acrylic glass plate, while the balloon cut into a suitable size film is attached to the glass plate to form a structure similar to the eardrum. Compared with Example 1, this device is easier to prepare.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a self-driven device for simultaneously detecting respiratory flow and humidity and a preparation method thereof. A positive friction material I and a negative friction material I are oppositely attached to the inner wall of an elastic balloon to form a friction nano-generator; a positive friction material II is attached to the outer wall of the balloon, and a negative friction material II is attached to the inner wall of an opposite test cavity to form another friction nano-generator. The elastic balloon is placed in the test cavity and connected with the outside through a conduit. Two generator systems form electric channels with two 6514 electrometers through wires respectively for detection. Since the balloon is driven by respiration to form periodic expansion and contraction, friction films attached to the inner and outer wall sides generate contact-separation voltage signals. Since exhaled air only flows in the balloon and the conduit, a generator unit at the outer wall of the balloon is not affected by the humidity of the exhaled air, and the exhaled air flow and humidity signals can be separated through a sensor basic model of a different structure compensation type.

Description

technical field [0001] The invention relates to the fields of energy collection technology, micro-electro-mechanical systems (MEMS), sensors, and signal processing, in particular to a self-driven device for simultaneously detecting respiratory flow and humidity and a preparation method thereof. Background technique [0002] As an important physiological behavior of the human body, breathing is one of the important physiological indicators reflecting the health status of the human body. Compared with traditional blood testing, colorimetry and other technologies, respiratory diagnostic methods have the characteristics of real-time, continuity, non-invasiveness and comfort. The current mainstream respiratory sensor detection device consists of a flow detector, a gas chromatograph that analyzes the concentration of the target gas in the exhaled breath, and the like. However, due to the large size and high price of the gas chromatograph, the development of the breath sensor dete...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): A61B5/08A61B5/087H02N1/04
CPCH02N1/04A61B5/087A61B5/08
Inventor 太惠玲刘勃豪蒋亚东王斯段再华袁震谢光忠
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA