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Nano respiration sensor and preparation method thereof

A breathing sensor, nanotechnology, applied in nanotechnology, nanotechnology, nanotechnology for sensing, etc., can solve the problems of large volume, complex structure, poor comfort, etc.

Active Publication Date: 2015-03-25
XUZHOU NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the sensors used for respiratory monitoring mainly include thermal type, differential pressure type and piezoelectric type, etc. Among them, the thermal sensitive sensor obtains the respiratory signal through the temperature change caused by breathing, which is easily affected by the ambient temperature; Changes to obtain signals require the user to wear a mask, which is less comfortable; the piezoelectric sensor is limited by the sensitivity of sensitive materials, so it is large in size and high in cost
The existing respiratory sensor has a complex structure, which is not conducive to one-time use, and the disinfection procedure is cumbersome

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0024] A nano-respiration sensor, which includes a sensitive unit 1, a constant voltage power supply 2, an amplifier 3, an analog / digital converter 4, a single-chip microcomputer 5, a liquid crystal display 6, a memory 7 and an alarm device 8; one end of the sensitive unit 1 is connected to a constant voltage Power supply 2, the other end is connected to the amplifier 3, after the current is amplified, it is connected to the single-chip microcomputer 5 through the analog / digital converter 4, and the signal can be stored by the memory 7 after processing, and displayed by the liquid crystal display 6, and can be paired by the alarm device 8 abnormal signal to alarm; wherein the sensitive unit 1 includes a substrate 9, a pair of microelectrodes 10 distributed on the substrate, and a sensitive element zinc oxide nanowire 11 lapped between the pair of microelectrodes, forming a gap between the sensitive element and the pair of microelectrodes. Robust and reliable low-resistance cont...

Embodiment 2

[0032] A nano-respiration sensor, which includes a sensitive unit 1, a constant voltage power supply 2, an amplifier 3, an analog / digital converter 4, a single-chip microcomputer 5, a liquid crystal display 6, a memory 7 and an alarm device 8; one end of the sensitive unit 1 is connected to a constant voltage Power supply 2, the other end is connected to the amplifier 3, after the current is amplified, it is connected to the single-chip microcomputer 5 through the analog / digital converter 4, and the signal can be stored by the memory 7 after processing, and displayed by the liquid crystal display 6, and can be paired by the alarm device 8 abnormal signal to alarm; wherein the sensitive unit 1 includes a substrate 9, a pair of microelectrodes 10 distributed on the substrate, and a sensitive element zinc oxide nanowire 11 lapped between the pair of microelectrodes, forming a gap between the sensitive element and the pair of microelectrodes. Robust and reliable low-resistance cont...

Embodiment 3

[0040] A nano-respiration sensor, which includes a sensitive unit 1, a constant voltage power supply 2, an amplifier 3, an analog / digital converter 4, a single-chip microcomputer 5, a liquid crystal display 6, a memory 7 and an alarm device 8; one end of the sensitive unit 1 is connected to a constant voltage Power supply 2, the other end is connected to the amplifier 3, after the current is amplified, it is connected to the single-chip microcomputer 5 through the analog / digital converter 4, and the signal can be stored by the memory 7 after processing, and displayed by the liquid crystal display 6, and can be paired by the alarm device 8 abnormal signal to alarm; wherein the sensitive unit 1 includes a substrate 9, a pair of microelectrodes 10 distributed on the substrate, and a sensitive element zinc oxide nanowire 11 lapped between the pair of microelectrodes, forming a gap between the sensitive element and the pair of microelectrodes. Robust and reliable low-resistance cont...

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Abstract

The invention relates to a nano respiration sensor and a preparation method thereof, and belongs to the technical field of sensors. The nano respiration sensor comprises a sensing unit and a constant voltage sensing circuit, wherein one end of a sensing unit microelectrode pair is connected with a constant voltage power supply, and the other end of the sensing unit microelectrode pair is connected with an amplifier; current is connected to a singlechip microcomputer through an analog / digital converter after being amplified, and signals can be stored by a memory after being processed and can be displayed by a liquid crystal display. When breathing air flow flows through a zinc oxide nanowire, the conductivity of zinc oxide changes, so that the nano respiration sensors of different breathing frequencies and intensities can be monitored, and a sound and light alarm for abnormal breathing can be given. The nano respiration sensor provided by the invention has the beneficial effects of simple device structure, low preparation cost, mass production, low working voltage, low power consumption, safety and reliability, high response speed, high sensitivity, and strong anti-interference capability. The nano respiration sensor is completely in no contact with the human body, and has high comfort in use.

Description

technical field [0001] The invention relates to a device in the technical field of sensors and a preparation method thereof, in particular to a nano-respiration sensor and a preparation method thereof. Background technique [0002] Abnormal breathing is the harbinger of many sudden diseases, therefore, the monitoring of abnormal breathing is of great significance in medicine. At present, the sensors used for respiratory monitoring mainly include thermal type, differential pressure type and piezoelectric type, etc. Among them, the thermal sensitive sensor obtains the respiratory signal through the temperature change caused by breathing, which is easily affected by the ambient temperature; Changes to obtain signals require the user to wear a mask, which is less comfortable; the piezoelectric sensor is limited by the sensitivity of sensitive materials, so it is large in size and high in cost. The existing respiratory sensor has a complex structure, which is not conducive to on...

Claims

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Application Information

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IPC IPC(8): G01N27/60G01N27/12B82Y15/00
Inventor 赵波王楠齐红霞
Owner XUZHOU NORMAL UNIVERSITY
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