Exhaled gas alcohol tester period checking device and checking method thereof

Abstract

The invention relates to an exhaled gas alcohol tester period checking device and a checking method thereof, the exhaled gas alcohol tester period checking device comprises a shell, a detection table on the shell, a camera shooting assembly, a control unit and a standard gas cylinder for storing an ethanol gas standard substance, the standard gas cylinder is communicated with a gas inlet of an electronic flowmeter through a gas outlet pipeline, and a gas outlet of the electronic flowmeter is communicated with a gas blowing pipeline; one end of the air blowing pipeline is connected with an air outlet of the electronic flowmeter, the other end of the air blowing pipeline is provided with an air blowing port, a lens of the camera shooting assembly is aligned with the detection table, the camera shooting assembly carries out image data acquisition on the detected alcohol tester on the detection table, and the alcohol tester detection system reads an alcohol concentration value displayed on a picture and carries out data analysis and calculation. The exhaled gas alcohol tester can be subjected to period check at any time or according to needs, it is guaranteed that the exhaled gas alcohol tester is qualified when used, the accuracy of a detection result is guaranteed, and the situations of false detection and missing detection are reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of breath alcohol tester detection and calibration, and in particular to a breath alcohol tester period verification device and a verification method thereof. Background Art

[0002] The breath alcohol tester, also known as the breath alcohol detector, is an important measuring instrument for law enforcement traffic police to conduct preliminary screening of drivers driving under the influence. It can effectively identify whether the driver is driving under the influence. It can also be used in other situations to detect the alcohol content in the human body's exhaled gas to avoid casualties and major property losses.

[0003] In order to ensure the accuracy of the test results of the breath alcohol tester, the breath alcohol tester must be calibrated before leaving the factory. At the same time, it must also be periodically calibrated in accordance with the national metrological verification regulations JJG657-2019 "Exhaled Breath Alcohol Content Tester". The calibration cycle shall not exceed 6 months, and the tester can only be used after passing the calibration. Moreover, according to the national metrological verification regulations JJG657-2019 "Exhaled Breath Alcohol Content Tester", the indication error, repeatability, drift and anti-interference ability of the tested breath alcohol tester are necessary calibration items. When collecting data, the tested breath alcohol tester is used to test ethanol standard gases of various concentrations, and each concentration of ethanol standard gas is tested at least 10 times to obtain the average value to ensure the reliability of the calibration results. The calibration is time-consuming and highly professional, and must be carried out in a specialized measurement unit.

[0004] However, most existing breath alcohol testers are used by traffic police on duty. Due to the influence of the external environment, movement collisions, frequent use, etc., the instrument often fails to test accurately before the calibration time, resulting in false detection and missed detection during use, which affects the efficiency of traffic police law enforcement and causes unnecessary disputes. It also poses certain safety risks. Therefore, it is very necessary to conduct periodic verification of breath alcohol testers during the calibration cycle. This periodic verification can effectively ensure the accuracy of breath alcohol testers in daily use. Therefore, it is necessary to develop a periodic verification device for breath alcohol testers to ensure that the instrument's measurement value traceability is accurate and reliable. Summary of the Invention

[0005] In view of this, and to overcome the shortcomings of the existing technology, the present invention provides a breath alcohol tester period verification device. This period verification device can be placed in traffic police departments to perform period verification on breath alcohol testers during their calibration cycle, ensuring that the breath alcohol testers are qualified during use and reducing false detections and missed detections during use. The present invention also provides a period verification method for breath alcohol testers.

[0006] To achieve the above-mentioned purpose, the technical solution of the period verification device of the breath alcohol tester provided by the present invention is as follows: A breath alcohol tester period verification device, wherein: It includes a casing, a detection platform arranged on the casing, Multiple standard gas cylinders are arranged in the housing. The standard gas cylinders are used to store ethanol gas standard substances. The ethanol concentrations of the ethanol gas standard substances in the multiple standard gas cylinders are different. The gas outlets of the multiple standard gas cylinders are connected to the gas inlet of the electronic flow meter through gas outlet pipes. The gas outlet pipes are provided with control valves. The air outlet of the electronic flow meter is connected to the air blowing pipeline, one end of the air blowing pipeline is connected to the air outlet of the electronic flow meter, the other end of the air blowing pipeline passes through the housing and is provided with an air blowing port, the air blowing port corresponds to the detection platform on the housing, the housing is provided with a camera assembly, the lens of the camera assembly is aimed at the detection platform, and the camera assembly collects image data of the alcohol tester under test on the detection platform. The housing is provided with a control unit, the control unit is electrically connected to the data analysis and display device, the camera assembly is electrically connected to the data analysis and display device, the data analysis and display device is electrically connected to the server 31, the data analysis and display device is installed with an alcohol tester detection system, and the server 31 is installed with an alcohol tester quality management platform. The alcohol tester detection system comprises an image receiving and identifying module, a data processing module, a control module and a data receiving and display module. The image receiving and identifying module identifies the image captured by the camera assembly, extracts the alcohol concentration value displayed by the tested alcohol tester in the image and the identification and traceability code of the tested alcohol tester. The data processing module analyzes and calculates the alcohol concentration value provided by the image recognition module. The control module is used to send control instructions to the control unit. The data receiving and display module is used to receive and display data information fed back by the control unit. The alcohol tester quality management platform stores the identification and traceability information, period verification information and periodic calibration information of the alcohol tester being tested. The data receiving and display module of the alcohol tester detection system reads and displays the identification and traceability information, period verification information and periodic calibration information of the alcohol tester being tested stored in the alcohol tester quality management platform according to the identification and traceability code.

[0007] Preferably, a purge pump is further included, wherein the air outlet of the purge pump is connected to the air blowing pipeline through a pipeline, the air inlet of the purge pump is connected to the atmosphere, and an air filter is provided on the air inlet of the purge pump.

[0008] Preferably, when the alcohol tester under test detects the alcohol concentration of the ethanol gas standard substance blown out of the air port, the ethanol gas standard substance output by the standard gas cylinder of each concentration is tested 3 to 5 times.

[0009] Preferably, a pressure relief valve and an electronic pressure gauge are provided on the gas outlet of the standard gas cylinder.

[0010] Preferably, a heating device and a temperature sensor are provided on the air blowing pipeline, and the temperature sensor is arranged on the air blowing pipeline between the heating device and the air blowing port.

[0011] Preferably, a check valve is provided on the air blowing pipeline, and the check valve is arranged on the air blowing pipeline between the heating device and the air blowing port.

[0012] Preferably, the data analysis and display device is a PC or a mobile phone.

[0013] Preferably, the server is a remote server or a cloud server, and the data analysis and display device is wirelessly connected to the server.

[0014] Preferably, the control unit includes a control circuit board, a controller arranged on the control circuit board, a power conversion module electrically connected to the controller, a data communication module, a temperature control module, a pressure control module and a flow control module. The power conversion module is electrically connected to a power source provided in the housing, and the data communication module is electrically connected to a data analysis and display device. The temperature control module is electrically connected to the temperature sensor and the heating device. The temperature sensor detects the temperature information of the gas in the blowing pipeline, and the temperature control module controls and adjusts the heating device according to the temperature information. The pressure control module is electrically connected to the pressure relief valve and the electronic pressure gauge. The electronic pressure gauge detects the gas pressure flowing out of the standard gas cylinder. The pressure control module controls the opening and closing and the opening size of the pressure relief valve according to the gas pressure. The flow control module is electrically connected to the electronic flow meter and the control valve. The electronic flow meter detects the gas flow rate flowing through the valve. The flow control module controls the opening and closing and the opening size of the control valve according to the gas flow rate detected by the electronic flow meter.

[0015] Preferably, the control unit further comprises a purge control module electrically connected to the controller, the purge control module is electrically connected to the purge pump, and the purge control module controls the opening and closing of the purge pump.

[0016] The technical solution of the period verification method of the breath alcohol tester provided by the present invention is: A method for verifying the use of a breath alcohol tester, comprising the following steps: S1. Place the alcohol tester on the test table, with the test end of the alcohol tester aligned with the air outlet; S2. Using a camera assembly to photograph the breathalyzer under test placed on the testing table, obtaining an image with the identification and traceability code of the breathalyzer under test, and transmitting the image to a data analysis and display device. The breathalyzer detection system within the data analysis and display device identifies the identification and traceability code in the image and, based on the identification and traceability code, reads and displays the identification and traceability information, period verification information, and periodic calibration information of the breathalyzer under test stored in the breathalyzer quality management platform; S3. Use the heating device to heat the air blowing pipeline to stabilize the gas temperature in the air blowing pipeline at 34±0.5℃; S4. Use the purge pump and filtered air to purge the air pipeline for at least 2 minutes; S5. Input the theoretical alcohol concentration value of the ethanol gas standard substance in a standard gas cylinder among the multiple standard gas cylinders into the alcohol tester detection system within the data analysis and display device, open the pressure relief valve of the standard gas cylinder, adjust the control valve on the gas outlet pipe connected to the standard gas cylinder according to the control of the electronic flow meter, and introduce the ethanol gas standard substance into the blowing pipe. When the gas temperature in the gas outlet pipe stabilizes at 34±0.5°C, operate the alcohol tester to detect the alcohol concentration of the gas blown out from the blowing port using the alcohol tester; S6. Using a camera assembly to photograph the alcohol tester being tested, which is placed on the testing table, to obtain an image with the alcohol concentration value, and transmitting the image to a data analysis and display device. The alcohol tester detection system in the data analysis and display device reads and records the alcohol concentration value displayed on the image, thereby obtaining an alcohol concentration measurement value of the ethanol gas standard substance in the standard gas cylinder opened in step S5; S7, repeating steps S4 to S6 multiple times to obtain multiple alcohol concentration measurement values of the ethanol gas standard substance in the standard gas cylinder opened in step S5 for detection by the alcohol tester; S8. Repeat steps S4 to S7, using the alcohol tester to test the alcohol concentration of the ethanol gas standard substances in the remaining standard gas cylinders, and obtain multiple alcohol concentration measurement values for each standard gas cylinder; S9. Operate the alcohol tester detection system in the data analysis and display device to calculate the indication error, repeatability, drift and anti-interference ability of the alcohol tester under test based on the recorded alcohol concentration measurement value and alcohol concentration theoretical value, determine whether the alcohol tester under test is qualified, and upload the relevant information to the alcohol tester quality management platform in the server.

[0017] Preferably, the alcohol tester under inspection detects the alcohol concentration of the ethanol gas standard substance in each standard gas cylinder 3 to 5 times, and obtains 3 to 5 alcohol concentration measurement values for each standard gas cylinder. The beneficial effects of the present invention are

[0018] 1. The period verification device of the present invention can be placed in the traffic police department to conduct period verification on the breath alcohol tester during its verification period. The breath alcohol tester can be verified at any time or as needed to ensure that the breath alcohol tester is qualified when used, ensure the accuracy of the drunk driving test results, and effectively reduce false detection and missed detection during use.

[0019] 2. When the alcohol tester under inspection is checked during the present invention, when the alcohol tester under inspection detects the alcohol concentration of the ethanol gas standard substance blown out of the air port, the ethanol gas standard substance output by the standard gas cylinder of each concentration is detected 3 to 5 times, which is far less than the number of detections of at least 10 times stipulated in the national metrological verification regulations JJG657-2019 "Exhaled Gas Alcohol Content Detector", which can effectively shorten the detection time, reduce labor intensity, and reduce detection costs.

[0020] 3. The control unit of the present invention can realize automatic control and adjustment of the temperature, flow rate and pressure verification conditions during the verification of the alcohol tester under inspection. The control unit cooperates with the data analysis and display device to effectively improve the degree of automation of the exhaled gas alcohol tester verification, thereby making the present invention simple and easy to operate, and does not require very professional technicians to operate, saving labor and reducing costs.

[0021] 4. The setting of the purge pump of the present invention utilizes filtered air to purge the pipeline, which can effectively and automatically clean the pipeline. When replacing ethanol gas standard substances of different concentrations, the gas residue in the pipeline is removed by purge, avoiding mutual contamination and ensuring the accuracy of the verification results.

[0022] 5. The present invention has an alcohol tester quality management platform for storing identification and traceability information, period verification information and regular calibration information of the tested alcohol tester, thereby facilitating quality management of the alcohol tester and facilitating traffic management departments and measurement units to query and trace relevant information of the alcohol tester. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the verification device of the present invention; Figure 2 Schematic diagram of the control principle of the control unit of the present invention. DETAILED DESCRIPTION

[0024] The present invention will be described in further detail below with reference to the accompanying drawings: like Figure 1 and Figure 2As shown, a breath alcohol tester verification device includes a housing 1, a test platform 2 mounted on the housing 1, and a test platform 2 for placing a breath alcohol tester 16 under test. The housing 1 is provided with multiple standard gas cylinders containing ethanol gas standard substances having different ethanol concentrations. Each standard gas cylinder is provided with a pressure relief valve 7 and an electronic pressure gauge 8 at its outlet. The outlets of the multiple standard gas cylinders are connected to the air inlet of an electronic flowmeter 10 via outlet pipes 9, each of which is provided with a control valve. In this embodiment, two standard gas cylinders are provided in the casing 1, namely the first standard gas cylinder 3 and the second standard gas cylinder 4. Both standard gas cylinders store ethanol gas standard substances in nitrogen. The ethanol gas concentration of the ethanol gas standard substance in nitrogen in the first standard gas cylinder 3 is 0.1 mg / L. A first control valve 5 is provided on the gas outlet pipe 9 connected to the electronic flowmeter 10. The ethanol gas concentration of the ethanol gas standard substance in nitrogen in the second standard gas cylinder 4 is 0.4 mg / L. A second control valve 6 is provided on the gas outlet pipe 9 connected to the electronic flowmeter 10. The gas outlet of the electronic flowmeter 10 is connected to the blowing pipe 11. One end of the blowing pipe 11 is connected to the gas outlet of the electronic flowmeter 10, and the other end of the blowing pipe 11 passes through the casing. 1 and is provided with an air outlet 12, which corresponds to the detection table 2 on the casing 1. The air blowing pipeline 11 is provided with a heating device 19, a temperature sensor 20 and a check valve 21. The heating device 19, the temperature sensor 20 and the check valve 21 are arranged in sequence along the gas flow direction from the electronic flow meter 10 of the air blowing pipeline 11 to the air blowing port 12. The casing 1 is provided with a camera component 13, the lens of the camera component 13 is aimed at the detection table 2, and the camera component 13 collects image data of the alcohol tester 16 under inspection on the detection table 2. A purge pump 17 is provided in the casing 1, and the air outlet of the purge pump 17 is connected to the air blowing pipeline 11 through a pipeline. The air inlet of the purge pump 17 is connected to the atmosphere, and an air filter 18 is provided on the air inlet of the purge pump 17.

[0025] A control unit 14 is provided in the housing 1, and the control unit 14 is electrically connected to the data analysis and display device 15, the camera component 13 is electrically connected to the data analysis and display device 15, and the data analysis and display device 15 is electrically connected to the server 31. An alcohol tester detection system is installed in the data analysis and display device 15, and an alcohol tester quality management platform is installed in the server 31. The tested alcohol tester 16 is placed on the testing table 2 to detect and display the alcohol concentration of the ethanol gas standard substance blown out of the blowing port 12. The ethanol gas standard substance output by the standard gas cylinder of each concentration is tested 3 to 5 times. The alcohol tester detection system includes an image receiving and recognition module, a data processing module, a control module and a data receiving and display module. The image receiving and recognition module recognizes the picture captured by the camera component 13, extracts the alcohol concentration value displayed by the tested alcohol tester 16 in the picture and the identification and traceability code of the tested alcohol tester 16, the data processing module analyzes and calculates the alcohol concentration value proposed by the image recognition module, the control module is used to send control instructions to the control unit 14, and the data receiving and display module is used to receive and display the data information feedback by the control unit 14. The alcohol tester quality management platform stores the identification and traceability information, period verification information and periodic calibration information of the tested alcohol tester. The data receiving and display module of the alcohol tester detection system reads and displays the identification and traceability information, period verification information and periodic calibration information of the tested alcohol tester stored in the alcohol tester quality management platform according to the identification and traceability code.

[0026] The data analysis and display device 15 is a PC connected to the housing 1 or external to the housing 1. The data analysis and display device 15 can also be a smartphone with an alcohol tester APP installed in the smartphone. The server 31 is a remote server 31 or a cloud server 31, and the data analysis and display device is wirelessly connected to the server 31.

[0027] The control unit 14 includes a control circuit board 30, a controller 22 provided on the control circuit board 30, a power conversion module 23 electrically connected to the controller 22, a data communication module 24, a temperature control module 25, a pressure control module 26, a flow control module 27 and a purge control module 29. The power conversion module 23 is electrically connected to a power supply 28 provided in the housing 1, the data communication module 24 is electrically connected to the data analysis and display device 15, the temperature control module 25 is electrically connected to the temperature sensor 20 and the heating device 19, the temperature sensor 20 detects the gas temperature information in the blowing pipeline 11, and the temperature control module 25 adjusts the pressure according to the temperature. The information controls and adjusts the heating device 19. The pressure control module 26 is electrically connected to the pressure relief valve 7 and the electronic pressure gauge 8. The electronic pressure gauge 8 detects the gas pressure flowing out of the standard gas cylinder. The pressure control module 26 controls the opening and closing of the pressure relief valve 7 and the opening size according to the gas pressure. The flow control module 27 is electrically connected to the electronic flow meter 10 and the control valve. The electronic flow meter 10 detects the gas flow flowing through. The flow control module 27 controls the opening and closing of the control valve and the opening size according to the gas flow detected by the electronic flow meter 10. The purge control module 29 is electrically connected to the purge pump 17. The purge control module 29 controls the opening and closing of the purge pump 17.

[0028] When performing a period check on the breath alcohol tester, the power supply 28 is turned on, the PC, the purge pump 17 and other components are powered on and communicated, the breath alcohol tester detection system installed in the PC is turned on, and the method for performing a period check on the breath alcohol tester under inspection using the breath alcohol tester includes the following steps: A method for verifying the use of a breath alcohol tester, comprising the following steps: S1. Place the alcohol tester 16 on the test table 2, with the test end of the alcohol tester 16 corresponding to the air outlet 12; S2. Using the camera assembly 13 to photograph the breathalyzer 16 placed on the testing table 2, a picture with the identification and traceability code of the breathalyzer 16 is obtained, and the picture is transmitted to a PC. The breathalyzer detection system in the PC recognizes the identification and traceability code in the picture, and reads and displays the identification and traceability information, period verification information, and periodic calibration information of the breathalyzer stored in the breathalyzer quality management platform based on the identification and traceability code; S3. Operate the control module of the alcohol tester detection system to control the heating device 19 to start and preheat the air blowing pipe 11 so that the gas temperature in the air blowing pipe 11 is stabilized at 34±0.5°C; S4. Use the purge pump 17 and filtered air to purge the air pipe 11 for at least 2 minutes; The purge time is set to 2 minutes in the alcohol tester detection system in the PC computer, and the purge pump 17 is controlled to start. The purge pump 17 draws air filtered by the air filter 18. The air is pressurized by the purge pump 17 and enters the air blowing pipe 11. The air is then purges the air blowing pipe 11 with the filtered air. When the purge time reaches the set time of 2 minutes, the purge pump 17 is turned off.

[0029] S5. Input the theoretical alcohol concentration value of the ethanol gas standard substance in a certain standard gas cylinder among the multiple standard gas cylinders into the alcohol tester detection system in the data analysis and display device, open the pressure relief valve of the standard gas cylinder, adjust the control valve on the gas outlet pipe connected to the standard gas cylinder according to the control of the electronic flow meter, and introduce the ethanol gas standard substance into the blowing pipe. When the gas temperature in the gas outlet pipe stabilizes at 34±0.5°C, operate the alcohol tester to detect the alcohol concentration of the gas blown out from the blowing port. The theoretical alcohol concentration value of 0.1 mg / L of the ethanol gas standard substance in the first standard gas cylinder 3 is input into the alcohol tester detection system in the PC computer, and the pressure relief valve 7 and the first control valve 5 on the first standard gas cylinder 3 are opened through the control module of the alcohol tester detection system. The ethanol gas standard substance in the nitrogen in the first standard gas cylinder 3 flows out from the gas outlet pipe 9 and then enters the electronic flow meter 10. The electronic flow meter 10 measures the flow rate of the gas flowing through and transmits the flow rate information to the PC computer. Thereafter, the ethanol gas standard substance enters the blowing pipe 11, and is then heated to 34±0.5°C by the heating device 19, and then passes through the check valve 21 and finally blown out from the blowing port 12. The temperature sensor 20 detects the temperature of the heated gas and feeds the temperature information back to the PC computer. The PC computer adjusts the heating device 19 in real time according to the temperature information to meet the verification requirements. The tested alcohol tester 16 detects the alcohol concentration of the gas blown out from the blowing port 12, and the alcohol concentration value is displayed on the tested alcohol tester 16.

[0030] S6. Using the camera assembly 13 to photograph the alcohol tester 16 placed on the test table, obtaining a picture with the alcohol concentration value, and transmitting the picture to the data analysis and display device. The alcohol tester detection system in the data analysis and display device reads and records the alcohol concentration value displayed on the picture, and obtains an alcohol concentration measurement value of the ethanol gas standard substance in the standard gas cylinder opened in step S5. The camera assembly 13 is started, and the camera assembly 13 takes a picture of the alcohol tester 16 placed on the test table 2 to obtain a picture with the alcohol concentration value, and the picture is transmitted to the PC. The alcohol tester detection system in the PC recognizes and records the alcohol concentration value displayed on the picture, and obtains an alcohol concentration measurement value of the standard substance in the first standard gas cylinder 3.

[0031] S7. Repeat steps S4 to S6 twice to obtain two alcohol concentration measurement values of the ethanol gas standard substance in the first standard gas cylinder 3 detected by the alcohol tester. Combined with step S6, a total of three alcohol concentration measurement values of the first standard gas cylinder 3 are obtained.

[0032] S8, repeat steps S4 to S7, use the alcohol tester to detect the alcohol concentration of the ethanol gas standard substance in the second standard gas cylinder 4, and obtain three alcohol concentration measurement values of the second standard gas cylinder 4, S81, repeat step S4, and purge the air pipe 11 again. S82. Input the theoretical alcohol concentration value of 0.4 mg / L of the ethanol gas standard substance in the second standard gas cylinder 4 into the alcohol tester detection system in the PC computer. Open the pressure relief valve 7 and the second control valve 6 on the second standard gas cylinder 4. The ethanol gas standard substance in the nitrogen in the second standard gas cylinder 4 flows out from the gas outlet pipe 9 and then enters the electronic flow meter 10. The electronic flow meter 10 measures the flow of the gas flowing through and transmits the flow information to the PC computer. After that, the ethanol gas standard substance enters the blowing pipe 11, is heated by the heating device 19, passes through the check valve 21, and is finally blown out from the blowing port 12. The temperature sensor 20 detects the temperature of the heated gas and feeds the temperature information back to the PC computer. The PC computer adjusts the heating device 19 in real time according to the temperature information to meet the verification requirements. The tested alcohol tester 16 detects the alcohol concentration of the gas blown out from the blowing port 12. The alcohol concentration value is displayed on the tested alcohol tester 16. S83: Start the camera assembly 13, which takes a picture of the alcohol tester 16 placed on the test table 2, obtains a picture with the alcohol concentration value, and transmits the picture to the PC. The alcohol tester detection system in the PC reads and records the alcohol concentration value displayed on the picture, and obtains an alcohol concentration measurement value of the standard substance in the second standard gas cylinder 4. S84. Repeat steps S81 to S83 twice to obtain two alcohol concentration measurement values of the ethanol gas standard substance in the second standard gas cylinder 4 detected by the alcohol tester. Combined with step S83, a total of three alcohol concentration measurement values of the second standard gas cylinder 4 are obtained.

[0033] S8. Operate the alcohol tester detection system in the PC computer, calculate the indication error, repeatability, drift and anti-interference ability of the tested alcohol tester based on the recorded alcohol concentration measurement value and alcohol concentration theoretical value, and judge the accuracy of the test result of the tested alcohol tester 16 according to the national metrological verification procedure JJG657-2019 "Exhaled Gas Alcohol Content Detector", so as to determine whether the tested alcohol tester is qualified, and upload the relevant information to the alcohol tester quality management platform in the server 31.

[0034] It should be noted that the above embodiments are illustrative of the technical solutions of the present invention rather than limiting thereof. Equivalent substitutions made by ordinary technicians in the relevant technical field or other modifications made based on the existing technology should be included in the scope of rights required by the present invention as long as they do not exceed the concept and scope of the technical solutions of the present invention.

Claims

1. A breath alcohol tester verification device, characterized by: It comprises a housing (1), a detection table (2) arranged on the housing (1), A plurality of standard gas cylinders are arranged in the housing (1), and the standard gas cylinders are used to store ethanol gas standard substances. The ethanol gas standard substances in the plurality of standard gas cylinders have different ethanol concentrations. The gas outlets of the plurality of standard gas cylinders are respectively connected to the gas inlet of the electronic flow meter (10) through gas outlet pipes (9). The gas outlet pipes (9) are provided with a control valve. The air outlet of the electronic flow meter (10) is connected to the air blowing pipe (11), one end of the air blowing pipe (11) is connected to the air outlet of the electronic flow meter (10), and the other end of the air blowing pipe (11) passes through the housing (1) and is provided with an air blowing port (12), the air blowing port (12) corresponds to the detection table (2) on the housing (1), and the housing (1) is provided with a camera component (13), the lens of the camera component (13) is aimed at the detection table (2), and the camera component (13) collects image data of the alcohol tester (16) under inspection on the detection table (2). A control unit (14) is provided in the housing (1), the control unit (14) is electrically connected to the data analysis and display device (15), the camera assembly (13) is electrically connected to the data analysis and display device (15), the data analysis and display device (15) is electrically connected to the server (31), an alcohol tester detection system is installed in the data analysis and display device (15), and an alcohol tester quality management platform is installed in the server (31). The alcohol tester detection system comprises an image receiving and identifying module, a data processing module, a control module and a data receiving and displaying module. The image receiving and identifying module identifies a picture collected by a camera assembly (13), extracts the alcohol concentration value displayed by the alcohol tester (16) under test in the picture and the identification and tracing code of the alcohol tester (16) under test, the data processing module analyzes and calculates the alcohol concentration value proposed by the image recognition module, the control module is used to send a control instruction to the control unit (14), and the data receiving and displaying module is used to receive and display data information fed back by the control unit (14). The alcohol tester quality management platform stores identification and traceability information, period verification information, and periodic calibration information of the alcohol tester (16) being tested, and the data receiving and display module of the alcohol tester detection system reads and displays the identification and traceability information, period verification information, and periodic calibration information of the alcohol tester (16) being tested stored in the alcohol tester quality management platform according to the identification and traceability code.

2. The breath alcohol tester during verification device according to claim 1, characterized in that: It also includes a purge pump (17), the air outlet of the purge pump (17) is connected to the air blowing pipeline (11) through a pipeline, the air inlet of the purge pump (17) is connected to the atmosphere, and an air filter (18) is provided on the air inlet of the purge pump (17).

3. The breath alcohol tester during verification device according to claim 1, characterized in that: A pressure relief valve (7) and an electronic pressure gauge (8) are provided on the gas outlet of the standard gas cylinder.

4. The breath alcohol tester during verification device according to claim 1, characterized in that: The air blowing pipeline (11) is provided with a heating device (19) and a temperature sensor (20), and the temperature sensor (20) is arranged on the air blowing pipeline (11) between the heating device (19) and the air blowing port (12).

5. The breath alcohol tester during verification device according to claim 1, characterized in that: A check valve (21) is provided on the air blowing pipeline (11), and the check valve (21) is arranged on the air blowing pipeline (11) between the heating device (19) and the air blowing port (12).

6. The breath alcohol tester during verification device according to claim 1, characterized in that: The server (31) is a remote server or a cloud server, and the data analysis and display device (15) is wirelessly connected to the server (31).

7. The breath alcohol tester period verification device according to any one of claims 1 to 6, characterized in that: The control unit (14) includes a control circuit board (30), a controller (22) arranged on the control circuit board (30), a power conversion module (23) electrically connected to the controller (22), a data communication module (24), a temperature control module (25), a pressure control module (26), and a flow control module (27). The power conversion module (23) is electrically connected to a power source (28) provided in the housing (1), and the data communication module (24) is electrically connected to a data analysis and display device (15). The temperature control module (25) is electrically connected to the temperature sensor (20) and the heating device (19). The temperature sensor (20) detects the temperature information of the gas in the blowing pipeline (11). The temperature control module (25) controls and adjusts the heating device (19) according to the temperature information. The pressure control module (26) is electrically connected to the pressure relief valve (7) and the electronic pressure gauge (8). The electronic pressure gauge (8) detects the pressure of the gas flowing out of the standard gas cylinder. The pressure control module (26) controls the opening and closing and the opening size of the pressure relief valve (7) according to the gas pressure. The flow control module (27) is electrically connected to the electronic flow meter (10) and the control valve. The electronic flow meter (10) detects the flow of gas flowing through the control valve. The flow control module (27) controls the opening and closing and the opening size of the control valve according to the gas flow detected by the electronic flow meter (10).

8. The breath alcohol tester during verification device according to claim 7, characterized in that: The control unit (14) further includes a purge control module (29) electrically connected to the controller (22), wherein the purge control module (29) is electrically connected to the purge pump (17), and the purge control module (29) controls the opening and closing of the purge pump (17).

9. A method for verifying a breath alcohol tester during use, using the breath alcohol tester during use device according to any one of claims 1 to 8, characterized in that: The following steps are involved: S1, placing the alcohol tester (16) on the test table (2), with the test end of the alcohol tester (16) corresponding to the blowing port (12); S2, using the camera assembly (13) to photograph the alcohol tester (16) to be tested placed on the test table (2), obtaining a picture with the identification and traceability code of the alcohol tester (16) to be tested, and transmitting the picture to the data analysis and display device (15), the alcohol tester detection system in the data analysis and display device (15) identifying the identification and traceability code in the picture, and reading and displaying the identification and traceability information, period verification information and periodic verification information of the alcohol tester (16) to be tested stored in the alcohol tester quality management platform according to the identification and traceability code; S3, using the heating device (19) to heat the air blowing pipeline (11) so that the gas temperature in the air blowing pipeline (11) is stabilized at 34±0.5°C; S4, using a purge pump (17) and filtered air to purge the air pipe (11) for at least 2 minutes; S5. Input the theoretical alcohol concentration value of the ethanol gas standard substance of a certain standard gas cylinder among the plurality of standard gas cylinders into the alcohol tester detection system in the data analysis and display device (15), open the pressure relief valve (7) of the standard gas cylinder, adjust the control valve on the gas outlet pipe (9) connected to the standard gas cylinder according to the electronic flow meter (10), and introduce the ethanol gas standard substance into the blowing pipe (11). When the gas temperature in the gas outlet pipe (9) is stabilized at 34±0.5°C, operate the alcohol tester (16) to detect the alcohol concentration of the gas blown out from the blowing port (12) using the alcohol tester (16); S6, using the camera assembly (13) to photograph the alcohol tester (16) placed on the test table (2), obtaining a picture with the alcohol concentration value, and transmitting the picture to the data analysis and display device (15), the alcohol tester detection system in the data analysis and display device (15) reads and records the alcohol concentration value displayed on the picture, and obtains an alcohol concentration measurement value of the ethanol gas standard substance in the standard gas cylinder opened in step S5; S7, repeating steps S4 to S6 multiple times to obtain multiple alcohol concentration measurement values of the ethanol gas standard substance in the standard gas cylinder opened in step S5 detected by the alcohol tester (16); S8, repeating steps S4 to S7, using the alcohol tester (16) to detect the alcohol concentration of the ethanol gas standard substances in the remaining standard gas cylinders, and obtaining multiple alcohol concentration measurement values for each standard gas cylinder; S9. Operate the alcohol tester detection system in the data analysis and display device (15) to calculate the indication error, repeatability, drift and anti-interference ability of the alcohol tester (16) under test based on the recorded alcohol concentration measurement value and alcohol concentration theoretical value, determine whether the alcohol tester (16) under test is qualified, and upload the relevant information to the alcohol tester quality management platform in the server (31).

10. The breath alcohol tester period verification method according to claim 9, characterized in that: The alcohol tester (16) detects the alcohol concentration of the ethanol gas standard substance in each standard gas cylinder 3 to 5 times, and obtains 3 to 5 alcohol concentration measurement values for each standard gas cylinder.

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