CN212134621U - Human body exhaled gas detection device - Google Patents
Human body exhaled gas detection device Download PDFInfo
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- CN212134621U CN212134621U CN202020499924.1U CN202020499924U CN212134621U CN 212134621 U CN212134621 U CN 212134621U CN 202020499924 U CN202020499924 U CN 202020499924U CN 212134621 U CN212134621 U CN 212134621U
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- gas
- analog
- human body
- way switch
- gas sensor
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- 238000001514 detection method Methods 0.000 title claims abstract description 21
- 239000007789 gas Substances 0.000 claims abstract description 58
- 238000006243 chemical reaction Methods 0.000 claims abstract description 34
- 239000004973 liquid crystal related substance Substances 0.000 claims abstract description 11
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims abstract description 10
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 10
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims abstract description 6
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 claims abstract description 5
- 239000001569 carbon dioxide Substances 0.000 claims abstract description 5
- 229910002092 carbon dioxide Inorganic materials 0.000 claims abstract description 5
- 229910000037 hydrogen sulfide Inorganic materials 0.000 claims abstract description 5
- 230000002093 peripheral effect Effects 0.000 claims abstract description 4
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 4
- 238000003745 diagnosis Methods 0.000 abstract description 4
- 238000005259 measurement Methods 0.000 abstract 2
- 229910021529 ammonia Inorganic materials 0.000 abstract 1
- 201000010099 disease Diseases 0.000 abstract 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 abstract 1
- 229910052739 hydrogen Inorganic materials 0.000 abstract 1
- 239000001257 hydrogen Substances 0.000 abstract 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 abstract 1
- 239000003814 drug Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 238000002555 auscultation Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000008786 sensory perception of smell Effects 0.000 description 1
- 210000001835 viscera Anatomy 0.000 description 1
Images
Abstract
The utility model relates to a human body expired gas detection device comprises gas sensor array, analog-to-digital conversion module, singlechip, peripheral circuit and the liquid crystal display module of six kinds of gases of distinguishable volatility organic gas, carbon dioxide, hydrogen sulfide, ammonia, hydrogen, methane. The analog-to-digital conversion module comprises a multi-way switch and an A/D conversion circuit, wherein the multi-way switch can gate 8 analog channels, 8 analog quantities are allowed to be input in a time-sharing mode, the analog quantities share one A/D conversion circuit for conversion, and the gas sensor for six gases selects 6 analog channels in a time-sharing mode. The gas sensor is connected with a multi-way switch in the ADC0809, and the singlechip is connected with the ADC0809, so that the measurement of six gases is realized and the measurement values of the six gases are displayed. The utility model discloses can help the supplementary human health condition of analysis and supplementary disease diagnosis that carries on, be a detection device of human exhalation gas with low costs, detection convenience.
Description
Technical Field
The utility model relates to a human body exhalation gas detection device belongs to medical instrument technical field.
Background
With the development of economy and society, the requirements of people on health are higher and higher.
In the field of medical health, the detection of exhaled gas of a human body and the like is used for assisting a doctor in diagnosis.
In the diagnosis and treatment of traditional Chinese medicine, the doctor is expected to make four diagnoses, namely, smelling, cutting and inquiring, and the auscultation is finished by depending on the subjective feelings of the doctor, such as the sense of hearing, smell and the like.
At present, most of human body exhaled gas detection devices are complex in structure, high in cost and difficult to popularize and use, and the human body exhaled gas detection device which is easy to use and practical, low in cost and convenient to detect needs to be solved in order to detect human body exhaled gas.
Disclosure of Invention
The utility model provides a human body exhaled air detection device with low cost and convenient detection. In order to realize the aim, the technical scheme is as follows:
a human body exhaled gas detection device is composed of a gas sensor array, an analog-to-digital conversion module, a single chip microcomputer, a peripheral circuit and a liquid crystal display screen module. The analog-to-digital conversion module comprises a multi-way switch and an A/D conversion circuit, wherein the multi-way switch can gate 8 analog channels, allows 8 analog components to be input in a time-sharing mode, and shares one A/D conversion circuit for conversion, so that the method is an economical multi-way data acquisition method. The gas sensor array is connected with the input end of a multi-way switch in the analog-to-digital conversion module, the input end of the A/D conversion circuit is connected with the output end of the multi-way switch, the output end of the A/D conversion circuit is connected with the input end of the single chip microcomputer, and the output end of the single chip microcomputer is connected with the input end of the liquid crystal display screen.
The analog-to-digital conversion module adopts an 8-bit ADC0809 chip, six gas sensors are arranged in the gas sensor array and are respectively connected with six input ends of a multi-way switch in the analog-to-digital conversion module, the single chip microcomputer adopts an AT89S52 type chip, and the output end of an A/D conversion circuit in the ADC0809 chip is connected with the input end of the single chip microcomputer. The liquid crystal display screen module adopts a DMC20261 module.
The gas sensor array is internally provided with gas sensors sensitive to six human body exhaled gases of volatile organic gas, carbon dioxide, hydrogen sulfide, ammonia gas, hydrogen gas and methane, and the types of the gas sensors are respectively as follows: TVOC, TGS4160, TGS825, TGS826, TGS821 and GS 2611.
The human body exhaled gas detection adopts a high-sensitivity sensor to collect human body exhaled gas information such as volatile organic gas, carbon dioxide, hydrogen sulfide, ammonia gas, hydrogen gas, methane and the like, an analog-to-digital conversion module comprises a multi-way switch and an A/D conversion circuit, the multi-way switch can gate 8 analog channels, 8 analog quantities are allowed to be input in a time-sharing mode, one A/D conversion circuit is shared for conversion, and 6 analog channels are selected by the gas sensors of six gases in a time-sharing mode. The gas sensor is connected with a multi-way switch in the ADC0809, the singlechip AT89S52 is connected with the ADC0809, an A/D conversion circuit in the ADC0809 is started by utilizing the singlechip, the ADC0809 sends an interrupt request signal to the AT89S52 after the conversion is finished, and the CPU responds to the interrupt request. The conversion result is read and sent to the corresponding storage area to be measured through the reading operation of the decoder, and the singlechip is connected with a DMC20261 type liquid crystal display to display the measured values of the six gases.
The utility model provides a human body exhaled air detection device with low cost and convenient detection.
Drawings
Fig. 1 is a schematic block diagram of the human body exhalation gas detection device of the present invention.
Fig. 2 is an electrical schematic diagram of the human body exhalation gas detection device of the present invention.
Fig. 3 is the utility model discloses a human body expired gas detection device's ADC0809 gas sensor signal sampling circuit.
Fig. 4 is the connection circuit of the single chip microcomputer and the DMC20261 type liquid crystal display of the human body exhalation gas detecting device of the present invention. In the figure: the gas sensor comprises a gas sensor array 1, an analog-to-digital conversion module 2, a singlechip 3, a peripheral circuit and a liquid crystal display screen module 4.
Detailed Description
The following describes embodiments of the present invention with reference to the accompanying drawings.
The gas sensor array is composed of six sensors TVOC, TGS4160, TGS825, TGS826, TGS821 and GS2611 which are sensitive to the gas exhaled by human bodies such as volatile organic gas, carbon dioxide, hydrogen sulfide, ammonia gas, hydrogen gas, methane and the like, the sensors are connected with pins IN 0-IN 5 of ADC0809, as shown IN figure 3, for the sake of simplicity, only a signal acquisition schematic diagram of one path of gas sensor is shown IN the figure. The sampling resistance of the signal acquisition circuit of the gas sensor is 1K omega.
As shown in fig. 2, a P0 port of a data bus of the single chip AT89S52 is connected to pins D0-D7 of the ADC0809 for data transmission, a clock signal is obtained by dividing four frequencies from an ALE pin signal on the single chip, and when a crystal oscillator of 11.0592 is selected, the clock frequency of the ADC0809 is about 460KHz, and the conversion time of each channel is about 130 μ S.
As shown in fig. 4, the pins of the P2 port and the P3 port of the single chip are connected to the DMC20261 lcd module, specifically, the pins DB0-DB7 of the lcd module DMC20261 are connected to the pins P2.0-P2.7 of the single chip, and the pins RS and R/W, E of the lcd module DMC20261 are connected to the pins P3.0, and P3.2 of the single chip. The measured values of the six gases are displayed on a liquid crystal display through a display program.
The utility model relates to a human body expired gas detection device, imitate the sense of smell, adopt human body expired gas detection device, can smell the examination to the smell that the patient distributed out, can differentiate the cold and hot deficiency and excess of viscera qi and blood and the place of evil factors in view of the above. And deducing the overall health condition of the human body through a traditional Chinese medicine medical model. Better provides the diagnosis service for the traditional Chinese medicine, and makes the traditional Chinese medicine more brilliant.
Claims (3)
1. A human body exhaled gas detection device is characterized in that:
the gas sensor array, the analog-to-digital conversion module, the singlechip, the peripheral circuit and the liquid crystal display module form a whole;
the analog-to-digital conversion module is internally provided with a multi-way switch and an A/D conversion circuit, the gas sensor array is connected with the input end of the multi-way switch in the analog-to-digital conversion module, the input end of the A/D conversion circuit is connected with the output end of the multi-way switch, the output end of the A/D conversion circuit is connected with the input end of the single chip microcomputer, and the output end of the single chip microcomputer is connected with the input end of the liquid crystal display screen.
2. The human body exhaled air detecting apparatus according to claim 1, characterized in that:
the analog-to-digital conversion module adopts an 8-bit ADC0809 chip, the multi-way switch can gate 8 analog channels, six gas sensors are arranged in the gas sensor array and are respectively connected with six input ends of the multi-way switch in the analog-to-digital conversion module, the singlechip adopts an AT89S52 type chip, and the output end of an A/D conversion circuit in the ADC0809 chip is connected with the input end of the singlechip; the liquid crystal display screen module adopts a DMC20261 module.
3. The human body exhaled air detecting apparatus according to claim 1, characterized in that:
a gas sensor array is internally provided with gas sensors sensitive to six human body exhaled gases of volatile organic gas, carbon dioxide, hydrogen sulfide, ammonia gas, hydrogen gas and methane, and the types of the gas sensors are TVOC, TGS4160, TGS825, TGS826, TGS821 and GS2611 respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020499924.1U CN212134621U (en) | 2020-04-08 | 2020-04-08 | Human body exhaled gas detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020499924.1U CN212134621U (en) | 2020-04-08 | 2020-04-08 | Human body exhaled gas detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212134621U true CN212134621U (en) | 2020-12-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020499924.1U Expired - Fee Related CN212134621U (en) | 2020-04-08 | 2020-04-08 | Human body exhaled gas detection device |
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| Country | Link |
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| CN (1) | CN212134621U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113685954A (en) * | 2021-09-02 | 2021-11-23 | 珠海格力电器股份有限公司 | Control method and device of air purifier, air purifier and storage medium |
-
2020
- 2020-04-08 CN CN202020499924.1U patent/CN212134621U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113685954A (en) * | 2021-09-02 | 2021-11-23 | 珠海格力电器股份有限公司 | Control method and device of air purifier, air purifier and storage medium |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201211 |