CN113984699A - Expiration formula alcohol detection device - Google Patents
Expiration formula alcohol detection device Download PDFInfo
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- CN113984699A CN113984699A CN202111239637.2A CN202111239637A CN113984699A CN 113984699 A CN113984699 A CN 113984699A CN 202111239637 A CN202111239637 A CN 202111239637A CN 113984699 A CN113984699 A CN 113984699A
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- laser
- infrared
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- 238000001514 detection method Methods 0.000 title claims abstract description 87
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 title claims abstract description 35
- 230000008859 change Effects 0.000 claims abstract description 5
- 230000003993 interaction Effects 0.000 claims description 14
- 239000012528 membrane Substances 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 238000001914 filtration Methods 0.000 claims description 5
- 238000007599 discharging Methods 0.000 claims description 2
- 230000004044 response Effects 0.000 abstract description 3
- 206010006326 Breath odour Diseases 0.000 description 9
- 238000010586 diagram Methods 0.000 description 6
- 230000001815 facial effect Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 230000003595 spectral effect Effects 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 206010039203 Road traffic accident Diseases 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002329 infrared spectrum Methods 0.000 description 1
- 210000000554 iris Anatomy 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
- G01N21/3504—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light for analysing gases, e.g. multi-gas analysis
- G01N21/3518—Devices using gas filter correlation techniques; Devices using gas pressure modulation techniques
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/39—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using tunable lasers
Abstract
The invention discloses an expiration type alcohol detection device, which comprises a gas collection module, a gas detection module and a data processing module; the gas collecting module is used for collecting gas exhaled by the person to be measured; the gas detection module comprises an infrared laser and an infrared detector; infrared laser emitted by the infrared laser passes through the gas collection module and then enters the infrared detector; the infrared detector is used for converting the infrared laser into an electric signal; the data processing module is used for determining a detection result according to the electric signal change before and after the infrared laser passes through the gas collection module. The infrared laser can emit continuous infrared laser, and the detection result can be obtained only by contacting the infrared laser with the gas exhaled by the person to be detected, so that the expiratory alcohol detection device disclosed by the invention is high in response and detection speed. When the gas detection device needs to detect again, only the gas in the collecting tank needs to be emptied, the operation is convenient, and the detection efficiency is effectively improved. In addition, the device has high detection precision and long service life.
Description
Technical Field
The invention relates to an expiration type alcohol detection device, and belongs to the technical field of optical detection.
Background
The alcohol detection device is an instrument for detecting whether a person to be detected takes alcohol and the alcohol content. The traffic light can be used as a detection tool for traffic police to check drunk driving, so that the occurrence of major traffic accidents is effectively reduced.
The detection sensor used in the prior art alcohol detection device is an electrochemical sensor. The electrochemical sensor has the problems of slow detection and recovery speed, need of regular calibration or replacement, or inaccurate detection result.
Disclosure of Invention
The application aims to provide an expiration formula alcohol detection device to solve the technical problems that the detection and recovery speed of the alcohol detection device in the prior art is slow, the alcohol detection device needs to be regularly calibrated or replaced, and otherwise the detection result is inaccurate.
The invention discloses an expiration type alcohol detection device, which comprises: the device comprises a gas collection module, a gas detection module and a data processing module;
the gas collecting module is used for collecting gas exhaled by a person to be measured;
the gas detection module comprises an infrared laser and an infrared detector;
infrared laser emitted by the infrared laser passes through the gas collection module and then enters the infrared detector;
the infrared detector is used for converting the infrared laser into an electric signal;
and the data processing module is used for determining a detection result according to the electric signal change before and after the infrared laser passes through the gas collection module.
Preferably, the gas collection module comprises a filter membrane, a filter tip and a collection pool;
the filter membrane is arranged in the filter tip and used for filtering water vapor in the gas;
the collecting tank is connected with the filter tip and is used for collecting the gas subjected to water vapor filtering;
the side wall of the collecting tank is provided with a laser inlet and a laser outlet;
correspondingly, the infrared laser enters the collecting tank through the laser inlet and is emitted to the infrared detector through the laser outlet.
Preferably, the gas detection module further comprises a laser reflection unit;
the laser reflection unit is arranged in the collection pool and used for enabling the infrared laser entering the collection pool to be emitted to the infrared detector after being reflected for multiple times.
Preferably, the laser reflection unit includes a plurality of mirrors;
the reflecting mirror is a plane mirror and/or a concave mirror.
Preferably, the gas collection module further comprises an exhaust fan;
the exhaust fan is arranged on the side wall of the collecting tank and used for discharging gas in the collecting tank, so that the collecting tank is in a negative pressure state.
Preferably, the device further comprises an information acquisition module connected with the data processing module;
the information acquisition module is used for acquiring biological information of the person to be detected;
the data processing module is also used for correlating the biological information of the person to be detected and the detection result.
Preferably, the device further comprises a human-computer interaction module connected with the data processing module.
Preferably, the human-computer interaction module comprises a voice broadcasting unit;
and the voice broadcasting unit is used for broadcasting the prompt information and the detection result.
Preferably, the human-computer interaction module further comprises a display unit;
and the display unit is used for displaying the detection result.
Preferably, the infrared laser emits infrared laser light with a wavelength of 3300 nm-3500 nm.
Compared with the prior art, the expiration type alcohol detection device has the following beneficial effects:
the infrared laser can emit continuous infrared laser, and the detection result can be obtained only by contacting the infrared laser with the gas exhaled by the person to be detected, so that the response and the detection speed of the expiration type alcohol detection device are high. When the gas detection device needs to detect again, only the gas in the collecting tank needs to be emptied, the operation is convenient, and the detection efficiency is effectively improved. In addition, the infrared laser has the advantages of good monochromaticity, good directivity, good stability and long service life, so that the alcohol detection device has high detection precision and long service life.
Drawings
Fig. 1 is a schematic external structural diagram of a breath alcohol detection device according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of an internal structure of the breath alcohol detection device according to the embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a gas collection module in the breath alcohol detection apparatus according to an embodiment of the present invention;
FIG. 4 is a cross-sectional side view of the AA section of FIG. 3;
FIG. 5 is another side sectional view of the AA section corresponding to FIG. 3;
FIG. 6 is a schematic view of a combination structure of a gas collection module and a gas detection module in the breath alcohol detection apparatus according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of an information acquisition module in the breath alcohol detection apparatus according to the embodiment of the present invention;
FIG. 8 is a schematic structural diagram of a data processing module in the breath alcohol detection apparatus according to the embodiment of the present invention;
fig. 9 is a schematic structural diagram of a human-computer interaction module in the breath alcohol detection apparatus according to the embodiment of the invention.
In the figure, 001 is a gas collection module, 002 is a gas detection module, 003 is an information acquisition module, 004 is a data processing module, and 005 is a human-computer interaction module;
101 is a filter tip, 102 is a filter membrane, 103 is a first exhaust fan, 104 is a second exhaust fan, and 105 is a collecting tank; 106 is a laser outlet; 107 is a laser inlet;
201 is an infrared laser, 202 is a third plane mirror, and 203 is an infrared detector; 204 is a first plane mirror, 205 is a second plane mirror, 206 is a first concave mirror, 207 is a second concave mirror, and 208 is a third concave mirror;
301 is a face recognition camera;
401 is an infrared laser controller, 402 is an infrared laser controller power supply, 403 is an infrared detector circuit board, 404 is an exhaust fan circuit board, and 405 is an exhaust fan circuit board power supply;
501 is a voice broadcast unit, and 502 is a touch display screen.
Detailed Description
In the following description, for purposes of explanation and not limitation, specific details are set forth, such as particular system structures, techniques, etc. in order to provide a thorough understanding of the embodiments of the invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.
The expiration type alcohol detection device can be handheld or desktop. This embodiment only exemplifies the desktop alcohol detection device.
As shown in fig. 1 to 9, the breath alcohol detection apparatus according to the embodiment of the present invention includes: a gas collection module 001, a gas detection module 002, and a data processing module 004;
the gas collecting module 001 is used for collecting gas exhaled by a person to be measured;
the structure of the gas collection module 001 is shown in fig. 3 to 6, and comprises a filter membrane 102, a filter 101 and a collection pool 105;
the filter membrane 102 is arranged in the filter tip 101 and used for filtering water vapor in the gas and preventing the water vapor from influencing the detection precision;
the collecting tank 105 is connected with the filter 101 and is used for collecting the gas with the water vapor filtered out;
the side wall of the collecting tank 105 is provided with a laser inlet 107 and a laser outlet 106;
the gas detection module 002 comprises an infrared laser 201, an infrared detector 203 and a laser reflection unit;
infrared laser emitted by the infrared laser 201 passes through the gas collection module 001 and then enters the infrared detector 203, and the infrared detector 203 converts the infrared laser into an electric signal; specifically, the method comprises the following steps: infrared laser emitted by the infrared laser 201 enters the collection pool 105 in the gas collection module 001 through the laser inlet 107 and is emitted to the infrared detector 203 through the laser outlet 106, and the infrared detector 203 converts the infrared laser into an electric signal;
the laser reflection unit of this implementation sets up in collecting pit 105 for infrared laser multiple reflection in making to get into collecting pit 105 jets out to infrared detector 203 after making full contact with the gas in collecting pit 105, thereby when having alcohol in the gas, ensures that alcohol can fully absorb infrared laser, guarantees the accuracy of testing result.
The laser reflection unit comprises one or more reflection mirrors; the reflecting mirror is a plane mirror and/or a concave mirror. Exemplarily, the laser reflection unit includes a first reflection structure and a second reflection structure;
the first and second reflective structures are disposed on opposite sidewalls of the collection pool 105 and are not on the same sidewalls as the laser inlet 107 and the laser outlet 106.
The first reflecting structure includes a first plane mirror 204, a second plane mirror 205 and a first concave mirror 206 fixedly connected to the inner wall of the collecting tank 105, wherein the first concave mirror 206 is disposed between the first plane mirror 204 and the second plane mirror 205.
The second reflecting structure comprises a second concave mirror 207 and a third concave mirror 208 fixedly connected to the inner wall of the collecting reservoir 105.
The arrangement of the first reflecting structure and the second reflecting structure needs to satisfy: the infrared laser enters the collecting tank 105 through the laser inlet 107, passes through the second plane mirror 205, the second concave mirror 207, the first concave mirror 206, the third concave mirror 208 and the first plane mirror 204 in sequence, and then exits from the laser outlet 106 to enter the infrared detector 203.
The arrangement of the first reflection structure and the second reflection structure can enable the laser reflection unit to be compact in structure and small in occupied space on the premise of ensuring multiple reflections of infrared laser.
It should be noted that the number, type, installation position and installation angle of the reflectors in the above embodiments may be set according to practical situations, and the present invention is not limited to this.
The data processing module 004 in the embodiment of the present invention is configured to determine the detection result according to the change of the electrical signal before and after the infrared laser passes through the gas collection module 001. According to the variable quantity of the electric signal, the content of the alcohol can be obtained.
In the embodiment, infrared laser is used for detecting whether alcohol and the content of the alcohol exist in the gas exhaled by the person to be detected, and the alcohol mainly has a strong absorption effect on light with the wavelength of 3300 nm-3500 nm in the mid-infrared spectrum, so that an infrared laser capable of emitting light with the wavelength of 3300 nm-3500 nm is selected as a laser emission source in the embodiment. For example, an infrared laser with a peak wavelength of 3345nm or 3390nm may be selected.
The present embodiment further provides a third plane mirror 202, which is used for folding the optical path of the infrared laser 201, so that the infrared laser light generated by the infrared laser 201 enters the laser inlet 107 after being reflected by the third plane mirror 202. The folding messenger of light path alcohol detection device is inside more compact, and occupation space is littleer.
The gas collection module 001 in the embodiment of the present invention further includes an exhaust fan;
the exhaust fan is disposed on a side wall of the collection tank 105, and is configured to exhaust the gas in the collection tank 105, so that the interior of the collection tank 105 is in a negative pressure state.
The number of the exhaust fans can be set according to actual conditions, the number of the exhaust fans is large, the speed of exhausting the gas in the collection tank 105 is faster, and correspondingly, the occupied space is relatively large. In this embodiment, two exhaust fans of the first exhaust fan 103 and the second exhaust fan 104 are provided, and the two exhaust fans are respectively provided on both sides of the filter tip 101.
In order to clarify the person to be detected and associate the detection result with the person to be detected, the present embodiment further includes an information acquisition module 003, and the information acquisition module 003 is connected with the data processing module 004;
the information acquisition module 003 is used for acquiring biological information of the person to be detected; the biological information includes fingerprints, irises, facial information, and the like, the structure of the information acquisition module 003 in this embodiment is shown in fig. 7, the acquired information is facial information, and the device used for acquiring the facial information is the facial recognition camera 301.
The data processing module 004 is also used for correlating the biological information of the person to be detected with the detection result.
The device of this embodiment further includes a human-computer interaction module 005 connected to the data processing module 004, and the structure of the human-computer interaction module 005 is shown in fig. 9.
The human-computer interaction module 005 comprises a voice broadcasting unit 501;
the voice broadcasting unit 501 is used for broadcasting prompt information and detection results.
The human-computer interaction module 005 further comprises a display unit;
the display unit 502 is used for displaying the detection result. The display unit in the embodiment is a touch display screen, so that human-computer interaction is more convenient.
The structure of the data processing module 004 of the present embodiment is shown in fig. 8, the data processing module 004 includes an infrared laser controller 401 and an infrared laser controller power source 402, wherein the infrared laser controller 401 is connected to the infrared laser 201.
The data processing module 004 further includes an infrared detector circuit board 403 connected to the infrared detector 203, and the infrared detector circuit board 403 has a data processing function and can determine a detection result according to changes of electrical signals before and after the infrared laser passes through the gas collection module.
The data processing module 004 further includes a fan circuit board 404 and a fan circuit board power supply 405, wherein the fan circuit board 404 is connected to the first fan 103 and the second fan 104.
The gas collection module 001, the gas detection module 002 and the data processing module 004 in this embodiment can be assembled according to actual needs, so as to be assembled as a desktop alcohol detection device or a handheld alcohol detection device.
The using method of the breath alcohol detection device in the embodiment comprises the following steps:
after the person to be tested approaches to the detection device, the voice broadcast unit informs the person to be tested to record personal information through the facial recognition camera.
After the recording is finished, the voice broadcasting system informs a person to be tested to exhale to the filter tip 101 in the gas collection module 001, and the gas to be tested is collected in the collection pool 105 after water vapor contained in the gas to be tested is filtered by the filter membrane 102.
The infrared laser 201 in the gas detection module 002 emits continuous infrared laser, and the continuous infrared laser passes through the gas to be detected, and is reflected for multiple times in the collection pool 105, and finally is converged to the infrared detector 203. The infrared laser penetrates through the gas to be detected, if the gas exhaled by the person to be detected contains alcohol, the infrared laser is absorbed by the alcohol gas, so that the spectral signal detected by the infrared detector 203 changes, and if the gas exhaled by the person to be detected does not contain alcohol, the infrared laser is only slightly influenced, and the spectral signal changes slightly. The change of the spectral signal will be processed by the electrical signal transmitted to the infrared detector circuit board 403.
The data processing module 004 determines whether the gas exhaled by the person to be detected contains alcohol gas or detects the concentration of the alcohol gas in the gas exhaled by the person to be detected according to the received electric signal emitted by the infrared detector 203, that is, the detection result can be obtained through the data processing module 004.
And displaying the detection result through a touch display screen of the human-computer interaction module 005 and/or broadcasting the detection result through a voice broadcasting unit.
At the end of the test, the exhaust fan empties the gas in the collection tank 105 for the next test.
The infrared laser can emit continuous infrared laser, and the detection result can be obtained only by contacting the infrared laser with the gas exhaled by the person to be detected, so that the response and the detection speed of the expiration type alcohol detection device are high. When the gas detection device needs to detect again, only the gas in the collecting tank needs to be emptied, the operation is convenient, and the detection efficiency is effectively improved. In addition, the infrared laser has the advantages of good monochromaticity, good directivity, good stability and long service life, so that the alcohol detection device has high detection precision and long service life.
Although the present application has been described with reference to a few embodiments, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the application as defined by the appended claims.
Claims (10)
1. The expiration type alcohol detection device is characterized by comprising a gas collection module, a gas detection module and a data processing module;
the gas collecting module is used for collecting gas exhaled by a person to be measured;
the gas detection module comprises an infrared laser and an infrared detector;
infrared laser emitted by the infrared laser passes through the gas collection module and then enters the infrared detector;
the infrared detector is used for converting the infrared laser into an electric signal;
and the data processing module is used for determining a detection result according to the electric signal change before and after the infrared laser passes through the gas collection module.
2. The apparatus of claim 1, wherein the gas collection module comprises a filter membrane, a filter, and a collection basin;
the filter membrane is arranged in the filter tip and used for filtering water vapor in the gas;
the collecting tank is connected with the filter tip and is used for collecting the gas subjected to water vapor filtering;
the side wall of the collecting tank is provided with a laser inlet and a laser outlet;
correspondingly, the infrared laser enters the collecting tank through the laser inlet and is emitted to the infrared detector through the laser outlet.
3. The apparatus of claim 2, wherein the gas detection module further comprises a laser reflection unit;
the laser reflection unit is arranged in the collection pool and used for enabling the infrared laser entering the collection pool to be emitted to the infrared detector after being reflected for multiple times.
4. The apparatus of claim 3, wherein the laser reflection unit comprises a plurality of mirrors;
the reflecting mirror is a plane mirror and/or a concave mirror.
5. The apparatus of claim 2, wherein the gas collection module further comprises an exhaust fan;
the exhaust fan is arranged on the side wall of the collecting tank and used for discharging gas in the collecting tank, so that the collecting tank is in a negative pressure state.
6. The device according to any one of claims 1-5, further comprising an information acquisition module connected to the data processing module;
the information acquisition module is used for acquiring biological information of the person to be detected;
the data processing module is also used for correlating the biological information of the person to be detected and the detection result.
7. The device according to any one of claims 1-5, further comprising a human-machine interaction module connected to the data processing module.
8. The device of claim 7, wherein the human-computer interaction module comprises a voice broadcast unit;
and the voice broadcasting unit is used for broadcasting the prompt information and the detection result.
9. The apparatus of claim 7, wherein the human-computer interaction module further comprises a display unit;
and the display unit is used for displaying the detection result.
10. The apparatus of claim 1, wherein the infrared laser emits infrared laser light having a wavelength of 3300nm to 3500 nm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111239637.2A CN113984699A (en) | 2021-10-25 | 2021-10-25 | Expiration formula alcohol detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111239637.2A CN113984699A (en) | 2021-10-25 | 2021-10-25 | Expiration formula alcohol detection device |
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| Publication Number | Publication Date |
|---|---|
| CN113984699A true CN113984699A (en) | 2022-01-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111239637.2A Pending CN113984699A (en) | 2021-10-25 | 2021-10-25 | Expiration formula alcohol detection device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115414984A (en) * | 2022-09-14 | 2022-12-02 | 光子集成(温州)创新研究院 | But test-tube rack tray device of mechanical auto-lock |
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2021
- 2021-10-25 CN CN202111239637.2A patent/CN113984699A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115414984A (en) * | 2022-09-14 | 2022-12-02 | 光子集成(温州)创新研究院 | But test-tube rack tray device of mechanical auto-lock |
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