CN214585482U - Instrument for quickly investigating alcohol content in expired gas - Google Patents
Instrument for quickly investigating alcohol content in expired gas Download PDFInfo
- Publication number
- CN214585482U CN214585482U CN202023207675.3U CN202023207675U CN214585482U CN 214585482 U CN214585482 U CN 214585482U CN 202023207675 U CN202023207675 U CN 202023207675U CN 214585482 U CN214585482 U CN 214585482U
- Authority
- CN
- China
- Prior art keywords
- calibration controller
- chip
- operational amplifier
- real
- detection circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The utility model provides a rapid investigation expired gas alcohol content detector, which comprises an alcohol concentration detection circuit, a distance detection circuit, a flow detection circuit and a calibration controller, wherein the alcohol concentration detection circuit is connected with the calibration controller and is used for collecting an initial alcohol concentration detection value of mixed air and transmitting the initial alcohol concentration detection value to the calibration controller; the distance detection circuit is connected with the calibration controller and is used for detecting real-time distance parameters between the mouth and the nose of a person who blows air and an air blowing opening of the instrument for quickly checking the alcohol content of the exhaled air and transmitting the real-time distance parameters to the calibration controller; the flow detection circuit is connected with the calibration controller and is used for detecting real-time flow parameters in the gas transmission channel and transmitting the real-time flow parameters to the calibration controller; and the calibration controller is used for receiving the real-time distance parameter and the real-time flow parameter and outputting a calibrated alcohol concentration detection value.
Description
Technical Field
The utility model relates to an alcohol detects technical field, specific theory has related to a fast investigation expired gas alcohol content testing appearance.
Background
The existing police alcohol detectors are mainly divided into two categories, namely fast alcohol detector for fast examination and alcohol detector for evidence collection. The alcohol detector for evidence obtaining is provided with the disposable blowpipe, exhaled air and air are isolated during blowing, air mixing is avoided, the detection result is accurate, the defect that the disposable blowpipe needs to be replaced every time when the alcohol detector is tested is overcome, operation is inconvenient, and use cost is high.
Alcohol detector of investigation fast is mostly the stick formula, does not need the blowpipe, only need stretch the instrument to the local sampling expired gas of several centimetres apart from people's mouth nose department and carry out the result and calculate, more convenient health. Because of not having the blowpipe, inevitably like this can mix some air and get into the machine, lead to the result on the low side to the instrument is different apart from the distance of people's mouth nose department, and the air flow is different, and the air proportion of mixing is also different, leads to the result can be along with the instrument apart from the distance change of people's mouth nose department, seriously influences the accuracy of alcohol result.
In order to solve the above problems, people are always seeking an ideal technical solution.
Disclosure of Invention
The utility model aims at providing a not enough to prior art to provide a fast investigation expired gas alcohol content testing appearance.
In order to realize the purpose, the utility model discloses the technical scheme who adopts is: a detector for quickly checking the alcohol content in expired gas is composed of alcohol concentration detector, distance detector, flow detector and calibration controller,
the alcohol concentration detection circuit is connected with the calibration controller and used for collecting an initial alcohol concentration detection value of the mixed air and transmitting the initial alcohol concentration detection value to the calibration controller;
the distance detection circuit is connected with the calibration controller and is used for detecting real-time distance parameters between the mouth and the nose of a person who blows air and an air blowing opening of the instrument for quickly checking the alcohol content of the exhaled air and transmitting the real-time distance parameters to the calibration controller;
the flow detection circuit is connected with the calibration controller and is used for detecting real-time flow parameters in the gas transmission channel and transmitting the real-time flow parameters to the calibration controller;
and the calibration controller is used for receiving the real-time distance parameter and the real-time flow parameter and outputting a calibrated alcohol concentration detection value.
The utility model has the advantages that: the instrument for detecting the alcohol content of the exhaled gas in the quick investigation comprises an alcohol concentration detection circuit, a distance detection circuit, a flow detection circuit and a calibration controller, wherein the calibration controller receives the real-time distance parameters and the real-time flow parameters to look up a table, finds a required dynamic calibration factor Q, corrects an initial alcohol concentration detection value, and outputs the corrected alcohol concentration detection value, so that the technical problem of result deviation caused by mixed air influence is solved.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a circuit schematic of the calibration controller of the present invention;
fig. 3 is a schematic circuit diagram of the distance detection circuit of the present invention;
fig. 4 is a schematic circuit diagram of the alcohol concentration detection circuit of the present invention;
fig. 5 is a schematic circuit diagram of the flow detection circuit of the present invention;
fig. 6 is a schematic circuit diagram of the buzzer circuit of the present invention;
fig. 7 is a circuit schematic of the LED circuit of the present invention;
fig. 8 is a schematic circuit diagram of the key circuit of the present invention.
Detailed Description
The technical solution of the present invention will be described in further detail through the following embodiments.
Example 1
As shown in fig. 1, the instrument for detecting the alcohol content in exhaled air in a quick manner comprises an alcohol concentration detection circuit, a distance detection circuit, a flow detection circuit and a calibration controller, wherein the alcohol concentration detection circuit is connected with the calibration controller and is used for collecting an initial alcohol concentration detection value of mixed air and transmitting the initial alcohol concentration detection value to the calibration controller; the distance detection circuit is connected with the calibration controller and is used for detecting real-time distance parameters between the mouth and the nose of a person who blows air and an air blowing opening of the instrument for quickly checking the alcohol content of the exhaled air and transmitting the real-time distance parameters to the calibration controller; the flow detection circuit is connected with the calibration controller and is used for detecting real-time flow parameters in the gas transmission channel and transmitting the real-time flow parameters to the calibration controller; and the calibration controller is used for receiving the real-time distance parameter and the real-time flow parameter and outputting a calibrated alcohol concentration detection value.
It should be noted that, usually, the exhaled air alcohol content detector for fast checking is not equipped with a disposable blow pipe basically, but exhaled air sampling is performed at a place away from the mouth and nose of a person by several centimeters, so that part of mixed air inevitably enters the detector, resulting in a lower detection result, and the distance from the air inlet of the detector to the mouth and nose of the person is different, the blowing flow rate is different, the mixed air proportion is also different, resulting in a detection result varying with the distance from the detector to the mouth and nose of the person.
Aiming at the two parameters which influence the result, namely the air blowing distance and the air blowing flow, the utility model provides a rapid investigation exhaled gas alcohol content detector which is additionally provided with a result correction system; this fast investigation expired gas alcohol content detector installs the result correction system that distance detection circuit and flow detection circuit ware are constituteed additional, the distance detection circuit measures the distance of the air inlet of detector apart from people's mouth and nose department, flow detection circuit ware measures the gas flow of blowing, simulate the people through the simulator in advance and blow off the alcohol gas of standard alcohol concentration (known concentration), be in different distances at the air inlet that makes the gas outlet of simulator and detector, adjust the alcohol gas of the different flow of gas outlet output of simulator through the flow controller, measure the actual measurement alcohol concentration of standard alcohol sensor output this moment, through standard alcohol concentration actual measurement alcohol concentration calculates individual dynamic calibration factor Q, plans a calibration factor table.
In actual testing, looking up a table after the real-time distance parameter and the real-time flow parameter to find a factor Q required to be dynamically calibrated, and correcting the initial alcohol concentration detection value doped with air, thereby solving the technical problem of result deviation caused by the influence of mixed air.
It should be noted that, after receiving the real-time distance parameter and the real-time flow parameter, the calibration controller executes the following steps: reading real-time distance parameters between the mouth and the nose of a person blowing the air and an air blowing opening of a fast-investigation exhaled air alcohol content detector, and reading real-time flow parameters in an air transmission channel of the fast-investigation exhaled air alcohol content detector; acquiring a dynamic calibration factor Q based on the distance-flow model, the real-time distance parameter and the real-time flow parameter; reading an initial alcohol concentration detection value Y0 of the mixed air, and calibrating the initial alcohol concentration detection value Y0 according to the dynamic calibration factor Q to obtain a calibrated alcohol concentration detection value Y; wherein the calibrated alcohol concentration detection value Y and the initial alcohol concentration detection value Y0 satisfy a functional relationship: the calibrated alcohol concentration detection value Y = dynamic calibration factor Q × initial alcohol concentration detection value Y0.
Further, when constructing the distance-flow model, the following steps are executed: taking the distance a as a first further distance, and acquiring a series of calibration distance parameters; taking the flow b as a second step distance to obtain a series of calibration flow parameters; when the calibration distance parameters are the same and the calibration flow parameters are different, simulating and outputting alcohol gas with standard alcohol concentration to a gas blowing port of the fast-investigation exhaled gas alcohol content detector to obtain actually measured alcohol concentration in a series of gas transmission channels; thereby recording the variation trend of the actually measured alcohol concentration along with the calibration distance parameter and the calibration flow parameter; and associating the calibration distance parameter, the calibration flow parameter, the standard alcohol concentration and the measured alcohol concentration to construct a distance-flow model.
The distance a can be 1cm, 0.5cm or 0.1cm, the flow b can be 1L/min, 0.5L/min or 0.1L/min, and the specific application can be adaptively modified according to the needs.
It should be noted that a plurality of detection values of each measured alcohol concentration in the gas transmission channel are obtained through a plurality of measurements (for example, 10 times), an abnormal constant is eliminated, and an average value is obtained to serve as a final measured alcohol concentration, so that the influence of random errors on the dynamic calibration factor Q is reduced, and the accuracy of the dynamic calibration of the quick-discharging type alcohol analyzer is further improved.
It should be noted that, when the distance-flow model is constructed, the flow controller is used to adjust the output gas flow of the simulator, and the flow parameter in the gas transmission channel is detected, so that the flow parameter in the gas transmission channel is consistent with the calibration flow parameter.
The following table gives a specific embodiment of a distance-flow model:
in the above table, Wi(i =1, 2, 3 …) represents a distance parameter between the air outlet of the simulator and the air inlet of the detector, the step distance being 1 cm; sj(j =1, 2, 3 …) represents a flow parameter in the gas transmission channel, the step flow being 1L/min; a represents a standard alcohol concentration, the value of which is known; b isijThe distance parameter between the air outlet of the simulator and the air inlet of the detector is represented as WiAnd a gas transmission channelHas an internal flow parameter of SjThen, the actually measured alcohol concentration in the gas transmission channel is the alcohol detection result of the expired gas doped with air;
the calculation formula of the dynamic calibration factor is Qij= A/Bij，QijThe real-time distance parameter between the mouth and the nose of the person who blows the air and the air blowing mouth of the detector for quickly checking the alcohol content of the exhaled air is WiAnd the flow parameter in the gas transmission channel of the detector for quickly investigating the alcohol content of the exhaled gas is SjThe corresponding calibration factor.
Further, when the dynamic calibration factor Q is obtained, the following steps are performed: comparing the real-time distance parameter with a series of calibration flow parameters, if the real-time distance parameter is consistent with a certain calibration flow parameter, comparing the real-time flow parameter with a series of calibration flow parameters, and if the real-time flow parameter is consistent with a certain calibration flow parameter, extracting standard alcohol concentration and actual measurement alcohol concentration which are associated with the real-time distance parameter and the real-time flow parameter; and obtaining a corresponding dynamic calibration factor Q according to the standard alcohol concentration/the actually measured alcohol concentration.
Further, when the dynamic calibration factor Q is obtained, the following steps are also executed: when the real-time distance parameter is inconsistent with each calibration flow parameter, extracting the calibration flow parameter with the minimum difference value with the real-time distance parameter as a target calibration flow parameter; if the real-time flow parameters are inconsistent with the calibration flow parameters, extracting the calibration flow parameters with the minimum difference value with the real-time flow parameters as target calibration flow parameters; and acquiring a standard alcohol concentration and an actually measured alcohol concentration which are associated with the target calibration flow parameter and the target calibration flow parameter, and acquiring a corresponding dynamic calibration factor Q according to the standard alcohol concentration/the actually measured alcohol concentration.
It should be noted that, in consideration of the fact that in practical application, the real-time distance parameter may not be consistent with each calibration flow parameter or the real-time flow parameter may not be consistent with each calibration flow parameter, and at this time, the dynamic calibration factor Q cannot be directly obtained according to the real-time distance parameter and the real-time flow parameter, the target calibration flow parameter and the target calibration flow parameter need to be obtained first, and then the dynamic calibration factor Q is obtained through the target calibration flow parameter and the target calibration flow parameter, so as to improve the flexibility of the instrument for quickly examining the alcohol content in the exhaled gas.
Example 2
This embodiment provides a specific implementation manner of an alcohol concentration detection circuit, where the alcohol concentration detection circuit includes a first signal processing circuit and an alcohol sensor, and an output signal of the alcohol sensor is transmitted to the calibration controller through the first signal processing circuit.
As shown in fig. 4, the first signal processing circuit includes a first operational amplifier chip U3B, a positive input terminal of the first operational amplifier chip U3B is connected to the alcohol sensor S1 through a filter U4, a negative input terminal of the first operational amplifier chip U3B is connected to the alcohol sensor S1 through a resistor R6, an output terminal of the first operational amplifier chip U3B is connected to a negative input terminal of the first operational amplifier chip U3B through a second resistor R7, an output terminal of the first operational amplifier chip U3B is further connected to the calibration controller through a third resistor R8, and the third resistor R8 is further grounded through a capacitor C5.
This embodiment further provides a specific implementation manner of the flow rate detection circuit, where the flow rate detection circuit includes a second signal processing circuit and a pressure sensor, and an output signal of the pressure sensor is transmitted to the calibration controller through the second signal processing circuit.
As shown in fig. 5, the second signal processing circuit includes a second operational amplifier chip (for example, an operational amplifier with model MCP6L 04), the second operational amplifier chip includes an operational amplifier chip U5A, an operational amplifier chip U5B and an operational amplifier chip U5C, a positive input terminal of the operational amplifier chip U5A is connected to the pressure sensor S2, a negative input terminal of the operational amplifier chip U5A is connected to a negative input terminal of the operational amplifier chip U5B through a resistor R18, and a positive input terminal of the operational amplifier chip U5B is connected to the pressure sensor S2; the output end of the operational amplifier chip U5A is connected with the negative input end of the operational amplifier chip U5A through a resistor R11, and the output end of the operational amplifier chip U5B is connected with the negative input end of the operational amplifier chip U5B through a resistor R12; the output of chip U5A is put to fortune still connects through resistance R13 chip U5C's negative input end is put to fortune, chip U5B's output is put to fortune still connects through resistance R14 chip U5C's positive input end is put to fortune, chip U5C's output is put to fortune passes through resistance R15 and connects chip U5C's negative input end is put to fortune, chip U5C's output is put to fortune still connects through resistance R17 calibration controller.
This embodiment further provides a specific implementation of a distance detection circuit, where the distance detection circuit includes a third signal processing circuit and a distance sensor, and an output signal of the distance sensor is transmitted to the calibration controller through the third signal processing circuit, as shown in fig. 3.
Specifically, the types of the alcohol sensor, the distance sensor, and the pressure sensor are not limited, and may be electrochemical, semiconductor, optical, ultrasonic, or other types of sensors; the circuit schematic of the calibration controller is shown in fig. 2.
Example 3
The present embodiment differs from the above embodiments in that: the calibration controller is also connected with an acousto-optic alarm circuit, and the acousto-optic alarm circuit is used for sending alarm information.
Specifically, the sound and light alarm circuit comprises a buzzer circuit and an LED circuit, as shown in FIGS. 6 and 7.
Further, the calibration controller is also connected with a display device, and the display device is used for displaying the calibrated alcohol concentration detection value. Specifically, the display device may be a liquid crystal display, a digital tube display or a touch display.
Further, the calibration controller is also connected with an operation keyboard, and the operation keyboard is used for parameter input and interaction with an operator to realize testing and other different function selections, as shown in fig. 8.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention and not to limit it; although the present invention has been described in detail with reference to preferred embodiments, it should be understood by those skilled in the art that: the invention can be modified or equivalent substituted for some technical features; without departing from the spirit of the present invention, it should be understood that the scope of the claims is intended to cover all such modifications and variations.
Claims (9)
1. The utility model provides a fast investigation expired gas alcohol content detector which characterized in that: comprises an alcohol concentration detection circuit, a distance detection circuit, a flow detection circuit and a calibration controller, wherein,
the alcohol concentration detection circuit is connected with the calibration controller and used for collecting an initial alcohol concentration detection value of the mixed air and transmitting the initial alcohol concentration detection value to the calibration controller;
the distance detection circuit is connected with the calibration controller and is used for detecting real-time distance parameters between the mouth and the nose of a person who blows air and an air blowing opening of the instrument for quickly checking the alcohol content of the exhaled air and transmitting the real-time distance parameters to the calibration controller;
the flow detection circuit is connected with the calibration controller and is used for detecting real-time flow parameters in the gas transmission channel and transmitting the real-time flow parameters to the calibration controller;
and the calibration controller is used for receiving the real-time distance parameter and the real-time flow parameter and outputting a calibrated alcohol concentration detection value.
2. The rapid check exhaled breath alcohol content detector of claim 1, wherein: the alcohol concentration detection circuit comprises a first signal processing circuit and an alcohol sensor, and an output signal of the alcohol sensor is transmitted to the calibration controller through the first signal processing circuit.
3. The rapid check exhaled breath alcohol content detector of claim 2, wherein: first signal processing circuit includes first fortune and puts chip U3B, the positive input of first fortune is put chip U3B and is passed through wave filter U4 and is connected the alcohol sensor, the negative input of first fortune is put chip U3B and is passed through resistance R6 and connect the alcohol sensor, the output of first fortune is put chip U3B and is passed through second resistance R7 and connect the negative input of first fortune is put chip U3B, the output of first fortune is put chip U3B and still is connected through third resistance R8 the calibration controller, third resistance R8 still passes through electric capacity C5 ground connection.
4. The rapid check exhaled breath alcohol content detector of claim 1, wherein: the flow detection circuit comprises a second signal processing circuit and a pressure sensor, and an output signal of the pressure sensor is transmitted to the calibration controller through the second signal processing circuit.
5. The rapid check exhaled breath alcohol content detector of claim 4, wherein: the second signal processing circuit comprises a second operational amplifier chip, the second operational amplifier chip comprises an operational amplifier chip U5A, an operational amplifier chip U5B and an operational amplifier chip U5C, the positive input end of the operational amplifier chip U5A is connected with the pressure sensor, the negative input end of the operational amplifier chip U5A is connected with the negative input end of the operational amplifier chip U5B through a resistor R18, and the positive input end of the operational amplifier chip U5B is connected with the pressure sensor; the output end of the operational amplifier chip U5A is connected with the negative input end of the operational amplifier chip U5A through a resistor R11, and the output end of the operational amplifier chip U5B is connected with the negative input end of the operational amplifier chip U5B through a resistor R12;
the output of chip U5A is put to fortune still connects through resistance R13 chip U5C's negative input end is put to fortune, chip U5B's output is put to fortune still connects through resistance R14 chip U5C's positive input end is put to fortune, chip U5C's output is put to fortune passes through resistance R15 and connects chip U5C's negative input end is put to fortune, chip U5C's output is put to fortune still connects through resistance R17 calibration controller.
6. The rapid check exhaled breath alcohol content detector of claim 1, wherein: the distance detection circuit comprises a third signal processing circuit and a distance sensor, and an output signal of the distance sensor is transmitted to the calibration controller through the third signal processing circuit.
7. The rapid check exhaled breath alcohol content detector according to any one of claims 1 to 6, wherein: the calibration controller is also connected with an acousto-optic alarm circuit, and the acousto-optic alarm circuit is used for sending alarm information.
8. The rapid check exhaled breath alcohol content detector according to any one of claims 1 to 6, wherein: the calibration controller is also connected with an operation keyboard, and the operation keyboard is used for inputting parameters.
9. The rapid check exhaled breath alcohol content detector according to any one of claims 1 to 6, wherein: the calibration controller is further connected with a display device, and the display device is used for displaying the calibrated alcohol concentration detection value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023207675.3U CN214585482U (en) | 2020-12-28 | 2020-12-28 | Instrument for quickly investigating alcohol content in expired gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023207675.3U CN214585482U (en) | 2020-12-28 | 2020-12-28 | Instrument for quickly investigating alcohol content in expired gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214585482U true CN214585482U (en) | 2021-11-02 |
Family
ID=78365800
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023207675.3U Active CN214585482U (en) | 2020-12-28 | 2020-12-28 | Instrument for quickly investigating alcohol content in expired gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214585482U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116559266A (en) * | 2023-07-05 | 2023-08-08 | 深圳市达城威电子科技有限公司 | Air blowing type alcohol detector and self-cleaning control system thereof |
-
2020
- 2020-12-28 CN CN202023207675.3U patent/CN214585482U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116559266A (en) * | 2023-07-05 | 2023-08-08 | 深圳市达城威电子科技有限公司 | Air blowing type alcohol detector and self-cleaning control system thereof |
| CN116559266B (en) * | 2023-07-05 | 2023-09-19 | 深圳市达城威电子科技有限公司 | Air blowing type alcohol detector and self-cleaning control system thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5058601A (en) | Pulmonary function tester | |
| CN105974062B (en) | A kind of gas sensor calibrating installation and its calibration method | |
| US5398695A (en) | Cardiopulmonary performance analyzer having dynamic transit time compensation | |
| JP5921562B2 (en) | Multifunction breath analyzer | |
| US5645071A (en) | Method for the measurement of the molar mass of gases or gas mixtures and an apparatus for the performance of the method | |
| US7094208B2 (en) | Spirometer | |
| Wideman et al. | Assessment of the aerosport TEEM 100 portable metabolic measurement system | |
| DK2861983T3 (en) | PROCEDURE FOR MEASURING EXHAUST AIR ALCOHOL CONCENTRATION AND APPARATUS | |
| US20130281873A1 (en) | Method for measuring breath alcohol concentration and apparatus therefor | |
| CA2516570A1 (en) | Gas monitoring system and sidestream gas measurement system adapted to communicate with a mainstream gas measurement system | |
| JP2014530670A5 (en) | ||
| CN203561610U (en) | Self-calibrated expiration nitrogen monoxide analyzer | |
| CN102937617B (en) | Self-calibration exhaled gas analysis device | |
| CN105717064A (en) | Expiration alcohol tester and alcohol testing method | |
| US9901288B2 (en) | Methods of detecting gaseous component levels in a breath | |
| CN214585482U (en) | Instrument for quickly investigating alcohol content in expired gas | |
| CN105699296A (en) | Alcohol detecting instrument and alcohol detecting method | |
| CN207366577U (en) | A kind of alcohol content of exhalation gas detector detection matching device | |
| CN103487489B (en) | Self-calibration exhaled nitric oxide analyzer | |
| US6553818B1 (en) | Exhaust flow calibration apparatus and method | |
| CN111537755A (en) | Comparison verification method for alcohol standard gas generated by generating device | |
| CN112782410A (en) | Dynamic calibration method and detector for quick-discharging type wine detector | |
| CN108168954A (en) | A kind of grain sampler with detection device | |
| CN217425431U (en) | Alcohol meter capable of being checked quickly | |
| CA2410243C (en) | Breath-alcohol measuring instrument |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |