Standard alcohol gas generating device for multi-channel alcohol detector verification

Abstract

The application provides a standard alcohol gas generating device for multi-channel alcohol detector calibration, comprising a generating device body, a gas transmission pipeline, a plurality of first valves and a control module; the generating device body has an output port capable of outputting standard alcohol gas, the gas transmission pipeline comprises an input port and a plurality of detection ports in communication with the input port; the input port is in communication with the output port, the input end of each first valve is connected to a detection port, and the output end outputs standard alcohol gas when the first valve is opened; the control ends of the plurality of first valves are electrically connected to the control module, the control module is used for receiving a detection command and controlling each first valve to open and close according to the detection command, a plurality of detection ports are arranged, and each detection port is controlled to blow by the plurality of first valves, so that the continuous calibration of a plurality of alcohol detectors can be realized, and the utilization rate of standard alcohol gas and the calibration efficiency of the alcohol detector are improved.

Description

Technical Field

[0001] This invention relates to the field of alcohol detection technology, and in particular to a standard alcohol gas generator for multi-channel alcohol detection. Background Technology

[0002] The metrological verification procedure for breath alcohol content detectors (hereinafter referred to as "alcohol detectors") stipulates that the national Class I certified air ethanol gas standard substance (hereinafter referred to as "Class I standard gas") and the standard alcohol gas generated by the source are used as the verification gas. Among them, the Class I standard gas is used as the traceability gas. Since the Class I standard gas is relatively expensive, the standard alcohol gas generated by the source can be used as the gas for subsequent verification to save on usage costs.

[0003] Chinese utility model patent application number 201320830646.3 discloses a standard alcohol gas generator. In this patent, a saturated or near-saturated alcohol gas is generated by bubbling sample gas into liquid pure alcohol within a generator. The saturated or near-saturated alcohol gas is then diluted with a diluent gas in a mixing device. Finally, a standard alcohol gas of a predetermined concentration is generated in the mixing device and output through a detection port for use by the user when calibrating an alcohol detector.

[0004] According to the metrological verification procedure, the gas flow rate generated by the generator must be at least 15 L / min to 36 L / min, and the concentration must be at least 0.1 mg / L, 0.4 mg / L, and 0.6 mg / L. Theoretically, the higher the concentration and the greater the flow rate, the greater the amount of saturated alcohol gas produced from the generator. However, under certain temperature and pressure conditions, the amount of saturated alcohol gas produced will reach a limit with increasing flow rate; it is impossible for the amount of saturated alcohol gas to increase indefinitely with an infinitely increasing flow rate. This indicates that the concentration and flow rate of the standard alcohol gas that can be produced are limited. Therefore, the upper limit of the flow rate required by the metrological verification procedure is 36 L / min.

[0005] When calibrating an alcohol detector, a breathalyzer test is required first. Once the minimum breathalyzer volume is reached, the detector samples and analyzes the exhaled standard alcohol gas to obtain the measurement result. The minimum breathalyzer volume specified in the metrological verification procedure is 1.2L. With a gas flow rate of 15L / min, the time required to exhale 1.2L of gas is 4.8 seconds. After the breathalyzer finishes, the sampling and analysis time to obtain the measurement result is generally within 15 seconds. Additionally, the alcohol detector requires a certain recovery time after each measurement. Generally, the higher the concentration, the longer the recovery time. When the concentration is 0.6mg / L, the recovery time is generally within 15 seconds. During metrological verification, it is generally necessary to perform 10 measurements on the same alcohol detector. However, existing generating devices can only perform measurements on one alcohol detector at a time. Since each sampling and analysis of the alcohol detector takes time, and recovery after sampling and analysis also takes time, although the generating device continuously produces standard alcohol gas during the verification process, most of the standard alcohol gas is not used for measurement. Instead, it is emitted as waste gas during the sampling, analysis, and recovery of the alcohol detector, resulting in low utilization.

[0006] Is it possible for multiple breathalyzers to measure simultaneously from a single outlet? Theoretically, yes. For example, with a flow rate set at 15 L / min, if the generator produces a flow rate of 30 L / min, two breathalyzers can measure simultaneously. However, to allow more breathalyzers to measure simultaneously, the flow rate needs to be increased. For instance, to allow three breathalyzers to measure simultaneously, the flow rate needs to reach at least 45 L / min, which exceeds the generator's capacity. Furthermore, even when two breathalyzers are operating simultaneously, they typically only produce low to medium concentrations of standard alcohol gas, such as 0.1 mg / L and 0.4 mg / L. To produce 0.6 mg / L, the limited amount of saturated alcohol gas produced in generator 2 means only one breathalyzer can detect it. Additionally, this method does not improve the utilization rate of the produced standard alcohol gas. Therefore, other methods must be found to improve detection efficiency and address the low utilization rate of standard alcohol gas. Summary of the Invention

[0007] The purpose of this invention is to provide a standard alcohol gas generator for multi-channel alcohol detector testing, which can improve the utilization rate of standard alcohol gas and the testing efficiency of alcohol detectors.

[0008] To achieve the above objectives, the present invention provides a standard alcohol gas generator for multi-channel alcohol detector testing, comprising: a generator body, a gas transmission pipeline, multiple first valves, and a control module;

[0009] The generating device body has an output port that can output standard alcohol gas, and the gas transmission pipeline includes an input port and multiple detection ports connected to the input port;

[0010] The input port is connected to the output port, and the input end of each first valve is connected to a detection port. The output end outputs standard alcohol gas when the first valve is opened.

[0011] The control terminals of the plurality of first valves are all electrically connected to the control module. The control module is used to receive detection commands and control each first valve to open and close according to the detection commands.

[0012] The standard alcohol gas generator for the multi-channel alcohol detector also includes a second valve, and the gas transmission pipeline also includes an exhaust port connected to the input port;

[0013] The input end of the second valve is connected to the exhaust port, and the output end discharges waste gas when the second valve is opened.

[0014] The control terminal of the second valve is electrically connected to the control module, and the control module is also used to control the second valve to open when all the first valves are closed, and to close when any one of the first valves is open.

[0015] The detection command includes: a first command;

[0016] The first command is used to indicate whether the output end of each first valve is equipped with an alcohol detector to be tested.

[0017] The control module is used to control each of the first valves with an alcohol detector to be tested at its output terminal to open one by one according to the first command, and to control each of the first valves without an alcohol detector to be tested at its output terminal to remain closed.

[0018] The standard alcohol gas generator for multi-channel alcohol detector calibration also includes a first command generation module, which generates a first command based on whether the output end of each first valve is equipped with an alcohol detector to be calibrated.

[0019] The first command generation module is either a plurality of input buttons set at the output ends of a plurality of first valves or a plurality of alcohol detector automatic identification devices set at the output ends of a plurality of first valves.

[0020] The detection command includes a second command, which is used to set the air blowing parameters for each of the first valves.

[0021] The blowing parameters include a first duration;

[0022] The control module is used to control the duration of each opening of the first valve to be a first duration according to the second command.

[0023] The blowing parameters include a first flow rate and a first volume;

[0024] The control module is used to control the flow rate of standard alcohol gas output by each of the first valves each time it is opened, which is the first flow rate, and the total volume of standard alcohol gas is the first volume, according to the second command.

[0025] The blowing parameters include a second duration;

[0026] The control module is used to control the interval between the closing of the first valve and the opening of the second valve in one of the two sequentially opened first valves according to the second command, which is the second duration.

[0027] The blowing parameters include a third duration;

[0028] The control module is used to control the interval between closing the first valve that was last opened in the nth round of blowing and opening the first valve that was first opened in the (n+1)th round of blowing, according to the second command. The interval is the third duration, where n is a positive integer.

[0029] The beneficial effects of this invention are as follows: This invention provides a standard alcohol gas generator for multi-channel alcohol detector testing, comprising: a generator body, a gas transmission pipeline, multiple first valves, and a control module; the generator body has an output port capable of outputting standard alcohol gas, the gas transmission pipeline includes an input port and multiple detection ports connected to the input port; the input port is connected to the output port, and the input end of each first valve is connected to a corresponding detection port, the output end outputting standard alcohol gas when the first valve is open; the control ends of the multiple first valves are electrically connected to the control module, the control module is used to receive detection commands and control the opening and closing of each first valve according to the detection commands. By setting multiple detection ports and controlling each detection port to blow gas through multiple first valves respectively, continuous testing of multiple alcohol detectors can be achieved, improving the utilization rate of standard alcohol gas and the testing efficiency of alcohol detectors. Attached Figure Description

[0030] To further understand the features and technical content of this invention, please refer to the following detailed description and accompanying drawings. However, the drawings are provided for reference and illustration only and are not intended to limit the invention.

[0031] In the attached diagram,

[0032] Figure 1 This is a schematic diagram of the standard alcohol gas generator for the multi-channel alcohol detector calibration of the present invention;

[0033] Figure 2 This is a schematic diagram of the generator body of the standard alcohol gas generator for the multi-channel alcohol detector calibration of the present invention. Detailed Implementation

[0034] To further illustrate the technical means and effects of the present invention, the following detailed description is provided in conjunction with the preferred embodiments of the present invention and their accompanying drawings.

[0035] Please see Figure 1 The present invention provides a standard alcohol gas generator for multi-channel alcohol detector testing, comprising: a generator body 10, a gas transmission pipeline 20, a plurality of first valves 30 and a control module 40;

[0036] The generating device body 10 has an output port 11 that can output standard alcohol gas, and the gas transmission pipeline 20 includes an input port 21 and a plurality of detection ports 22 connected to the input port 21.

[0037] The input port 21 is connected to the output port 11. The input end of each first valve 30 is connected to a detection port 22, and the output end serves as the blowing port for standard alcohol gas. When the first valve 30 is opened, standard alcohol gas is output.

[0038] The control terminals of the plurality of first valves 30 are all electrically connected to the control module 40. The control module 40 is used to receive detection commands and control each first valve 30 to open and close according to the detection commands.

[0039] Specifically, the standard alcohol gas generator for the multi-channel alcohol detector also includes a second valve 50, and the gas transmission pipeline 20 also includes an exhaust port 23 connected to the input port 21; the input end of the second valve 50 is connected to the exhaust port 23, and the output end discharges waste gas when the second valve 50 is opened.

[0040] Furthermore, the control terminal of the second valve 50 is electrically connected to the control module 40, and the control module 40 is also used to control the second valve 50 to open when all the first valves 30 are closed, and to close when any one of the first valves 30 is open.

[0041] When all first valves 30 are closed, the standard alcohol gas is not used for the detection of the alcohol tester, but is directly discharged into the atmosphere through the second valve 50, hence it is called waste gas.

[0042] Specifically, the detection command includes: a first command; the first command is used to indicate whether the output end of each first valve 30 is equipped with an alcohol detector to be tested.

[0043] Furthermore, the control module 40 is used to control each of the first valves 30 with an alcohol detector to be tested at its output terminal to open one by one according to the first command, and to control each of the first valves 30 without an alcohol detector to be tested at its output terminal to remain closed.

[0044] Meanwhile, in order to obtain the first command, the standard alcohol gas generator for multi-channel alcohol detector calibration also includes a first command generation module 60, which is used to generate a first command based on whether the output end of each first valve 30 is equipped with an alcohol detector to be calibrated.

[0045] Optionally, the first command generation module 60 may be multiple input buttons respectively set for multiple first valves 30. When an input button is pressed, a command is generated indicating that the output end of the first valve 30 corresponding to the input button is equipped with an alcohol detector to be tested. When an input button is not pressed, a command is generated indicating that the output end of the first valve 30 corresponding to the input button is not equipped with an alcohol detector to be tested.

[0046] Optionally, the first command generation module 60 is a plurality of alcohol detector automatic identification devices respectively corresponding to a plurality of first valves 30. When an alcohol detector automatic identification device identifies an alcohol detector, it generates a command indicating that the output end of the first valve 30 corresponding to the alcohol detector automatic identification device has an alcohol detector to be tested. When an alcohol detector automatic identification device does not identify an alcohol detector, it generates a command indicating that the output end of the first valve 30 corresponding to the alcohol detector automatic identification device does not have an alcohol detector to be tested.

[0047] Optionally, the automatic identification device for the alcohol detector can use infrared, microwave proximity, or occupancy detection technology to achieve automatic identification of the alcohol detector.

[0048] Furthermore, the detection command includes a second command, which is used to set the air blowing parameters of each of the first valves 30.

[0049] Optionally, the blowing parameters include a first duration; the control module 40 is used to control the duration of each opening of the first valve 30 according to the second command as the first duration. For example, the duration of each opening of the first valve 30 is set to 4.8s.

[0050] Optionally, the blowing parameters include a first flow rate and a first volume; the control module 40 is used to control the flow rate of the standard alcohol gas output by each of the first valves 30 each time it is opened to the first flow rate and the total volume of the standard alcohol gas output to the first volume, according to the second command. For example, controlling the flow rate of the standard alcohol gas output by each of the first valves 30 each time it is opened to be 15L / min and the total volume of the standard alcohol gas output to be 1.2L.

[0051] Optionally, the blowing parameters include a second duration; the control module 40 is used to control the interval between the closing of the first first valve 30 and the opening of the second first valve 30 of the two sequentially opened first valves 30 according to the second command, which is the second duration.

[0052] A round of blowing is defined as one breath being blown once at the output end of the first valve of each alcohol gas generator in the standard alcohol gas generator for multi-channel alcohol detector calibration. Optionally, the blowing parameters include a third duration. The control module 40 is used to control the interval between closing the last opened first valve 30 in the nth round of blowing and opening the first opened first valve 30 in the (n+1)th round of blowing, which is the third duration, also known as the waiting time between each round of blowing, where n is a positive integer.

[0053] Optionally, such as Figure 2 As shown, the generating device body 10 includes: a first mass flow controller 1, a generator 2, a second mass flow controller 3, a fourth mass flow controller 5, a mixing device 6, and a third mass flow controller 4. One end of the first mass flow controller 1 is connected to the sample gas, and the other end is connected to the generator 2. The second mass flow controller 3 connects the generator 2 and the mixing device 6. One end of the fourth mass flow controller 5 is connected to the dilution gas, and the other end is connected to the mixing device 6. One end of the third mass flow controller 4 is connected to the generator 2, and the other end is vented. The output port 11 of the generating device body 10 is located on the mixing device 6. Of course, the specific implementation of the generating device body 10 of this invention is not limited to... Figure 2 The structure shown can be used in other suitable structures as well. For example, the first mass flow controller and the third mass flow controller can be omitted without affecting the basic function of the generating device body 10, and this will not affect the implementation of the present invention.

[0054] Preferably, the first valve 30 and the second valve 50 are two-position two-way solenoid valves, wherein the first valve 30 is normally closed, that is, it is closed when the control terminal is not connected and only opens when the control terminal is connected, and the second valve 50 is normally open, that is, it is open when the control terminal is not connected and only closes when the control terminal is connected.

[0055] It should be noted that the working process of the standard alcohol gas generator for calibrating the multi-channel alcohol detector of the present invention is as follows:

[0056] like Figure 1As shown, standard alcohol gas output from the output port 11 of the generator body 10 is input into the gas transmission pipeline 20 through the input port 21. The gas transmission pipeline 20 is equipped with multiple detection ports 22, and each detection port 22 is equipped with a first valve 30. The input end of the first valve 30 is connected to the detection port 22, and the output end serves as a blowing port. When the first valve 30 is opened, standard alcohol gas is output. Figure 1 As shown, Figure 1 There are 6 first valves 30, which correspond to 6 air blowing ports F1 to F6 respectively;

[0057] During operation, an alcohol detector to be calibrated is placed at each air outlet. Then, the control module 40 receives a test command, causing the first valve 30 to open and the other first valves 30 and second valves 50 to close. The standard alcohol gas output from the output port 11 flows through the gas transmission pipeline 20 to the air outlet F1 to perform a breath test on the alcohol detector placed at the air outlet F1. The alcohol detectors placed at other air outlets are in a waiting state for testing. When the required amount of air to perform a breath test on the alcohol detector is reached, the first valve 30 closes, the air outlet F1 stops blowing air, and the alcohol detector placed at the air outlet F1 performs sampling and analysis. After the sampling and analysis is completed and the measurement results are obtained, it enters the recovery state.

[0058] After the first valve 30 closes, the second valve 30 opens, while the other valves 30 remain closed. Breathing port F2 begins blowing air into the alcohol detector placed at F2. Simultaneously, the alcohol detector at F1 performs sampling analysis and recovery. When the required air volume for testing is reached, the second valve 30 closes, breathing port F2 stops blowing air, and the alcohol detector at F2 opens... Sampling and analysis begins. After the sampling and analysis are completed and the measurement results are obtained, the system enters the recovery state. Subsequently, the third valve 30 is opened, and the air outlet F3 begins to blow air onto the alcohol detector placed at the air outlet F2. This process is repeated until all six air outlets F1 to F6 have completed one round of blowing, and all six alcohol detectors placed at the six air outlets F1 to F6 have completed one measurement. This is considered to complete one round of blowing. During metrological verification, it is generally necessary to perform 10 measurements on the same alcohol detector. Therefore, it is necessary to complete 10 rounds of blowing to verify the above six alcohol detectors.

[0059] During metrological verification, it is generally necessary to perform 10 measurements on the same breathalyzer. Therefore, after the first round of breath testing, subsequent rounds of breath testing can be performed from the second to the tenth round, thus completing 10 measurements for each breathalyzer. Since multiple breathalyzers perform measurements sequentially, the next breathalyzer can be started as soon as the previous one completes its sampling and analysis phase. This makes full use of time, improves efficiency, minimizes waste of standard alcohol gas, and increases utilization, achieving better technical results.

[0060] It should be noted that, in order to ensure the accuracy and continuity of the measurement, the present invention also requires the control module 40 to set the air blowing parameters of each first valve 30. These air blowing parameters may include a first duration set for each first valve 30. The first duration is the duration of each opening of the first valve 30, that is, the air blowing duration of each air blowing port once. For example, the duration of each opening of each first valve 30 is set to 4.8s. It is worth mentioning that the air blowing duration of different air blowing ports can be the same or different, and these can be adjusted according to actual needs.

[0061] Furthermore, the first duration is set to ensure that each alcohol detector can sample sufficient standard alcohol gas. Based on this, the present invention can also use a first flow rate and a first volume to replace or coordinate with the setting of the first duration in the blowing parameters. The control module 40 controls the flow rate of the standard alcohol gas output by each first valve 30 each time it is opened to be the first flow rate and the total volume of the standard alcohol gas output to be the first volume. For example, controlling the flow rate of the standard alcohol gas output by each first valve 30 each time it is opened to be 15L / min and the total volume of the standard alcohol gas output to be 1.2L has a similar effect to setting the blowing time of each blowing port to 4.8s.

[0062] Because breathalyzers require recovery time, during multiple rounds of breathalyzer testing, if the last breathalyzer in the current round has finished testing, but the first breathalyzer is still in recovery mode, the first breathalyzer cannot be immediately tested in the next round. It is necessary to wait for the first breathalyzer to recover before starting the next round. Therefore, the breathalyzer parameters of this invention also include a third duration. The control module 40 controls the interval between the closing of the last open first valve 30 in the nth round of testing and the opening of the first open first valve 30 in the (n+1)th round of testing as the third duration, where n is a positive integer. That is, after testing the last breathalyzer in the nth round, a third duration must be waited before testing the first breathalyzer in the (n+1)th round.

[0063] Furthermore, the aforementioned third duration is the waiting time between two rounds of blowing. The present invention can also distribute the third duration between two consecutive blowing cycles in one round of blowing, in which case the blowing parameters include the second duration; the control module 40 controls the interval between the closing of the first first valve 30 and the opening of the second first valve 30 of the two sequentially opened first valves 30 as the second duration, that is, after the first alcohol detector completes the blowing, it is necessary to wait for the second duration before blowing can be performed on the next alcohol detector, thereby ensuring that the cyclic blowing can be carried out automatically and continuously.

[0064] Furthermore, to prevent incorrect blowing when no alcohol detector is installed at the blowing port, thus wasting standard alcohol gas and testing time, this invention also identifies whether an alcohol detector is installed at each first valve 30 (blowing port). For example, an input button is provided next to each first valve 30. When an alcohol detector is installed at the first valve 30, the input button is pressed; when no alcohol detector is installed, the input button is not pressed. The control module 40 determines which first valves 30 have alcohol detectors based on the pressed input button. During each round of blowing, the control module 40 only opens the first valves 30 with alcohol detectors installed, while the first valves 30 without alcohol detectors remain closed, thereby avoiding the waste of measurement time and standard alcohol gas.

[0065] Of course, an automatic alcohol detector identification device can be used to replace the input button. The automatic alcohol detector identification device can automatically identify whether an alcohol detector is installed at each of the first valves 30 and inform the control module 40, thus saving the trouble of pressing the input button.

[0066] In summary, this invention provides a standard alcohol gas generator for multi-channel alcohol detector testing, comprising: a generator body, a gas transmission pipeline, multiple first valves, and a control module; the generator body has an output port capable of outputting standard alcohol gas, the gas transmission pipeline includes an input port and multiple detection ports connected to the input port; the input port is connected to the output port, each first valve's input end is connected to a corresponding detection port, and its output end outputs standard alcohol gas when the first valve is open; the control ends of the multiple first valves are electrically connected to the control module, the control module is used to receive detection commands and control the opening and closing of each first valve according to the detection commands. By setting multiple detection ports and controlling each detection port to blow gas through multiple first valves respectively, continuous testing of multiple alcohol detectors can be achieved, improving the utilization rate of standard alcohol gas and the testing efficiency of alcohol detectors.

[0067] As described above, those skilled in the art can make various other corresponding changes and modifications based on the technical solutions and concepts of this invention, and all such changes and modifications should fall within the protection scope of the claims of this invention.

Claims

1. A standard alcohol gas generating device for calibrating a multi-channel alcohol detector, characterized by, The application relates to a standard alcohol gas generating device. The device comprises a generating device body (10), a gas transmission pipeline (20), a plurality of first valves (30) and a control module (40). The generating device body (10) has an output port (11) capable of outputting standard alcohol gas, the gas transmission pipeline (20) comprises an input port (21) and a plurality of detection ports (22) in communication with the input port (21). The input port (21) is in communication with the output port (11), the input end of each first valve (30) is correspondingly connected with one detection port (22), and the output end outputs standard alcohol gas when the first valve (30) is opened. The control ends of the plurality of first valves (30) are electrically connected with the control module (40), the control module (40) is used for receiving a detection command and controlling each first valve (30) to open and close according to the detection command. The detection command comprises a first command, the first command is used for indicating whether the output end of each first valve (30) is provided with an alcohol detector to be detected. The control module (40) is used for controlling each first valve (30) provided with the alcohol detector to be detected to be opened one by one according to the first command, and controlling each first valve (30) not provided with the alcohol detector to be detected to remain closed.

2. The standard alcohol gas generating device for calibrating a multi-channel alcohol detector according to claim 1, wherein The device further comprises a second valve (50), and the gas transmission pipeline (20) further comprises an exhaust port (23) in communication with the input port (21). The input end of the second valve (50) is in communication with the exhaust port (23), and the output end exhausts waste gas when the second valve (50) is opened.

3. The standard alcohol gas generating device for calibrating a multi-channel alcohol detector according to claim 2, wherein The control end of the second valve (50) is electrically connected with the control module (40), and the control module (40) is further used for controlling the second valve (50) to be opened when all the first valves (30) are closed and to be closed when any first valve (30) is opened.

4. The standard alcohol gas generating device for calibrating a multi-channel alcohol detector according to claim 1, wherein The device further comprises a first command generation module (60) used for generating the first command according to whether the output end of each first valve (30) is provided with the alcohol detector to be detected.

5. The standard alcohol gas generating device for calibrating a multi-channel alcohol detector according to claim 4, wherein The first command generation module (60) is a plurality of input keys respectively corresponding to the plurality of first valves (30) or a plurality of alcohol detector automatic identification devices respectively corresponding to the plurality of first valves (30).

6. The standard alcohol gas generating device for calibrating a multi-channel alcohol detector according to claim 1, wherein The detection command comprises a second command, and the second command is used for setting blowing parameters of each first valve (30).

7. The standard alcohol gas generating device for calibrating a multi-channel alcohol detector according to claim 6, wherein The blowing parameters comprise a first time length. The control module (40) is used for controlling the duration of each opening of each first valve (30) to be the first time length according to the second command.

8. The standard alcohol gas generating device for calibrating a multi-channel alcohol detector according to claim 6, wherein, The blowing parameters comprise a first flow and a first volume. The control module (40) is used for controlling the flow of the standard alcohol gas output by each first valve (30) during each opening to be the first flow and the total volume of the standard alcohol gas output by each first valve (30) to be the first volume according to the second command.

9. The standard alcohol gas generating device for calibrating a multi-channel alcohol detector according to claim 6, wherein, The blowing parameters comprise a second time length. The control module (40) is used for controlling the interval time length between the closing of a first valve (30) in front and the opening of a first valve (30) at back of two first valves (30) opened in sequence to be the second time length according to the second command.

10. The standard alcohol gas generating device for calibrating a multi-channel alcohol detector according to claim 6, wherein, The blowing parameter comprises a third time length; The control module (40) is configured to control the interval time length between the closing of the last opened first valve (30) in the n th blowing and the opening of the first opened first valve (30) in the n+1 th blowing according to the second command, and the interval time length is the third time length, and n is a positive integer.

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