A waterproof alcohol tester

Abstract

This utility model discloses a waterproof alcohol tester, including a waterproof shell, a human body sensing module, a door drive mechanism, a door component, an alcohol detection sensor, a detection motherboard, and a linkage communication module installed inside the waterproof shell. This utility model can be linked with turnstiles, improving the accuracy and efficiency of management; it can also be linked with city attendance machines, associating test results with personnel attendance information and saving the data; it has excellent waterproof performance and can be used stably in outdoor environments; equipped with a human body sensing module, the door component automatically opens when someone approaches and automatically closes when no one is using it, improving ease of use and reducing the possibility of external dust and debris entering the device, thus extending its service life; it also has a rain sensor that automatically closes the door component when rain is detected, preventing rainwater from accumulating at the door component and affecting its use.

Description

Technical Field

[0001] This utility model belongs to the field of alcohol detection equipment, and in particular relates to an alcohol tester that can be applied to turnstiles, can be linked with turnstiles and attendance machines, and has outdoor waterproof function, human body sensing and rain sensing function. Background Technology

[0002] Currently, commonly used breathalyzers typically consist of a detection sensor, a housing, a display screen, and operation buttons. They are mostly operated manually, either handheld or fixed in place, and can only detect and display alcohol concentration. However, these existing breathalyzers have significant drawbacks: First, they cannot be integrated with turnstiles. When a person's blood alcohol level is detected as exceeding the limit, the turnstile cannot automatically prevent them from passing, requiring manual intervention, which is not only inefficient but also prone to management loopholes due to human error. Second, they cannot be integrated with commercially available time and attendance machines. The test results cannot be linked to personnel attendance information for data storage, hindering subsequent statistics, queries, and management. Third, most existing breathalyzers lack a dedicated waterproof design, making them unsuitable for stable outdoor use, limiting their application range and failing to meet the needs of [other applications]. The equipment lacks a human body sensor, requiring manual operation to open or close the door components, which is inconvenient and may allow dust and rainwater to enter the equipment if the door components are left open, affecting the equipment's lifespan and detection accuracy. Finally, it lacks a rain sensor, meaning it cannot automatically adjust the door component status according to weather conditions, such as rain. If the door components are closed during rain, rainwater may accumulate near them, affecting user operation; if they are left open, excessive rainwater may enter the equipment, affecting its normal operation.

[0003] Therefore, designing an alcohol tester that can be installed outdoors and linked with turnstiles and attendance machines is a technical problem that the industry urgently needs to solve. Utility Model Content

[0004] In order to overcome the above-mentioned defects in the existing technology, this utility model proposes a waterproof alcohol tester.

[0005] The technical solution adopted in this utility model is to design a waterproof alcohol tester, which includes a waterproof shell, a human body sensing module, a door drive mechanism, a door component, an alcohol detection sensor, a detection motherboard, and a linkage communication module installed inside the waterproof shell; wherein the waterproof shell has an outer window, and the inner side of the outer window corresponds to the air inlet component; the door component is installed inside the waterproof shell and is driven by the door drive mechanism to move to cover or expose the air inlet component; the human body sensing module is installed on the front side wall of the waterproof shell to sense human bodies, and sends a door opening command to the door drive mechanism when a human body approaches; the alcohol detection sensor is connected to the air inlet component to detect the alcohol concentration in the intake air and sends the alcohol concentration to the detection motherboard; the detection motherboard sends control information to the linkage communication module according to the alcohol concentration, and the control information includes at least the alcohol concentration of the person being tested; the linkage communication module communicates with an external attendance machine and sends the control information.

[0006] Furthermore, the linkage communication module is also connected to a gate control board installed inside the waterproof housing, which controls the opening or closing of the external gate according to the control information.

[0007] Furthermore, the waterproof outer shell is also equipped with a rain sensor, which is used to detect whether it is raining outside. When rain is detected, the rain sensor sends a door closing signal to the door drive mechanism.

[0008] Furthermore, the waterproof outer shell includes a base column and a top cover. The base column houses the human body sensing module, alcohol detection sensor, detection motherboard, linkage communication module, and gate control board. The top cover covers the top of the base column to prevent water from entering the waterproof alcohol tester. The side wall of the top cover is equipped with the rain sensor, and the top cover houses the door drive mechanism and door components.

[0009] Furthermore, the upper cover adopts a truncated conical structure with a smaller top and a larger bottom. The hatch drive mechanism includes a rotary motor and a motor connector fixed to the outer periphery of the rotary motor. The output shaft of the rotary motor is fixedly connected to the upper bottom surface of the upper cover, and the motor connector is fixedly connected to the hatch component. When the rotary motor rotates, it drives the hatch component through the motor connector to cover or expose the air intake component.

[0010] Furthermore, the hatch component includes an upper top plate and a skirt connected vertically; wherein the upper top plate is disc-shaped and is fixedly connected to the motor connector; the skirt includes a curved panel extending downward from the outer circle of the upper top plate, and the curved panel is provided with an inner window, which exposes the air intake component when the outer window and the inner window are aligned.

[0011] Furthermore, an outer retaining ring extends downward from the upper bottom surface, and an inner retaining ring extends upward from the upper top plate. A rolling bearing is provided between the outer and inner retaining rings.

[0012] Furthermore, the base column includes a lower column and a top plate component connected sequentially from bottom to top; the human body sensing module and the gate control board are installed inside the lower column; the top plate component is fixed to the top of the lower column and is used to install the alcohol detection sensor, detection motherboard, linkage communication module and air inlet component; a mounting hole is provided at the bottom end of the lower column; the mounting hole is used to insert an external mounting tube to fix the waterproof alcohol tester, and the control tube of the waterproof alcohol tester is electrically connected to the external gate and attendance machine through the mounting hole and mounting tube.

[0013] Furthermore, the air inlet component has a funnel-shaped water receiving hopper below it, and the water receiving hopper has a downward-extending outlet that can drain rainwater out of the waterproof outer casing.

[0014] Furthermore, the waterproof alcohol tester also includes a pressure detector, an intake solenoid valve, and an air pump; wherein the pressure detector is connected to the air inlet component via an air tube to detect whether someone is blowing air into the air inlet component; the intake solenoid valve is connected to the rear end of the alcohol detection sensor via an air tube, and when someone blows air into the air inlet component, the intake solenoid valve is activated to draw the air blown out by the person into the alcohol detection sensor for alcohol detection; the air pump is connected to the rear end of the alcohol detection sensor via an air tube, and when the alcohol detection is completed, the air pump is activated to discharge the residual gas in the alcohol detection sensor through the air inlet component.

[0015] The beneficial effects of the technical solution provided by this utility model are: This invention can be linked with turnstiles, automatically controlling the turnstiles to prohibit passage when excessive alcohol levels are detected, without manual intervention, thus improving the accuracy and efficiency of management. It can also be linked with commercially available time and attendance machines, associating test results with personnel attendance information and saving the data for subsequent management, statistics, and queries. It has excellent waterproof properties, enabling stable use in outdoor environments, expanding its application range and meeting the pre-job alcohol testing needs of different locations. Equipped with a human body sensing module, it automatically opens the door when someone approaches and automatically closes when no one is using it, improving ease of use and reducing the possibility of external dust and debris entering the equipment, thus extending its service life. A rain sensor is also included, automatically closing the door when rain is detected to prevent rainwater accumulation at the door and its impact on use. Attached Figure Description

[0016] The present invention will now be described in detail with reference to the embodiments and accompanying drawings, wherein: Figure 1 This is a full sectional view of a preferred embodiment of the present invention; Figure 2 This is a three-dimensional view of the top cover and hatch components after they have been cut open; Figure 3 This is a full sectional view of the top cover and hatch components; Figure 4 This is a rotated sectional perspective view of the top cover; Figure 5 This is a rotated sectional perspective view of the hatch component; Figure 6 This is a perspective view of the overall appearance of a preferred embodiment of the present invention; Figure 7 It is a 3D view without the top cover; Figure 8 This is a top view of an alcohol detection sensor; Figure 9 This is a block diagram illustrating the working principle of an alcohol tester.

[0017] The following are the labels in the diagram: Detection mainboard (1), linkage communication module (2), top cover (3), data storage unit (4), alcohol detection sensor (5), sealing ring (6), gate control board (7), human body induction module (9), rain sensor (10), air inlet component (13), lower column (14), mounting hole (14a), top plate component (15), rotary motor (16), output shaft (16a), motor connector (17), outer retaining ring (18), outer window (19), upper top plate (20), skirt (21), inner window (22), inner retaining ring (23), rolling bearing (24), water receiving hopper (25), water outlet (25a), air pressure detector (26), air intake solenoid valve (27), air pump (28), mounting pipe (29), output shaft fixing groove (30), lower water outlet pipe (31), lower air outlet (32), wire hole (33). Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely for explaining the present utility model and are not intended to limit the present utility model.

[0019] This utility model discloses a waterproof alcohol tester, comprising a waterproof housing, a human body sensing module 9, a door drive mechanism 11, a door component, an alcohol detection sensor 5, a detection mainboard 1, and a linkage communication module 2 installed inside the waterproof housing; wherein the waterproof housing has an outer window 19, and the inner side of the outer window 19 corresponds to the air inlet component 13; the door component is installed inside the waterproof housing and is driven by the door drive mechanism 11 to move to cover or expose the air inlet component 13; the human body sensing module 9 is installed on the front side wall of the waterproof housing to sense the human body, and sends an opening command to the door drive mechanism 11 when a human body approaches; the alcohol detection sensor 5 is connected to the air inlet component 13 to detect the alcohol concentration in the intake air and sends the alcohol concentration to the detection mainboard 1; the detection mainboard 1 sends control information to the linkage communication module 2 according to the alcohol concentration, the control information including at least the alcohol concentration of the person being tested; the linkage communication module 2 communicates with an external attendance machine and sends the control information.

[0020] Figure 6 The figure shows a perspective view of the overall appearance of a preferred embodiment of the present invention. The preferred embodiment of the present invention adopts a column structure, which can be installed outdoors. When it rains, the door component is closed, which provides excellent waterproof performance.

[0021] See Figure 1 The preferred embodiment of the present invention shown in the full sectional view indicates that the linkage communication module 2 is also connected to a gate control board 7 installed inside a waterproof casing. This gate control board 7 controls the opening or closing of the external gate according to the control information. The present invention can be linked with the gate; when excessive alcohol is detected, the gate is automatically controlled to prohibit passage without manual intervention, improving the accuracy and efficiency of management. It should be noted that the linkage communication module 2 in the preferred embodiment is also connected to a data storage unit 4. The data storage unit is electrically connected to the linkage module and is used to store detection data and associated attendance information. Simultaneously, the linkage module 2 associates the detected alcohol concentration data, detection time, and corresponding personnel information obtained through the attendance machine 8, and sends them to the data storage unit 4 for storage, facilitating subsequent retrieval and management.

[0022] See Figure 2The diagram shows a three-dimensional view of the cut-off top cover and hatch components. A rain sensor 10 is also installed on the waterproof outer shell. The rain sensor 10 detects whether it is raining outside. When rain is detected, the rain sensor 10 sends a hatch-closing signal to the hatch drive mechanism 11. It should be noted that the rain information collected by the rain sensor 10 is transmitted to the hatch drive mechanism 11 via the linkage communication module 2. The rain sensor 10 itself is rainproof and is attached to the waterproof outer shell. A wiring hole 33 is provided on the waterproof outer shell, through which the signal line of the rain sensor 10 is connected to the linkage communication module 2. This invention features excellent waterproof performance, enabling stable use in outdoor environments and expanding its application range to meet the pre-job alcohol testing and screening needs of various locations. Equipped with a human body sensing module, it automatically opens the door component when someone approaches and automatically closes it when no one is using it, improving ease of use and reducing the possibility of external dust and debris entering the equipment, thus extending its service life. A rain sensor is also included, automatically closing the door component when rain is detected to prevent rainwater from accumulating at the door component and affecting its use.

[0023] See Figure 1 The waterproof housing includes a base column and a top cover 3. The base column houses the human body sensing module 9, the alcohol detection sensor 5, the detection motherboard 1, the linkage communication module 2, and the gate control board 7. The top cover 3 covers the top of the base column to prevent water from entering the waterproof alcohol tester. The rain sensor 10 is located on the side wall of the top cover 3. The top cover 3 houses the door drive mechanism 11 and the door components.

[0024] To enhance waterproofing while maintaining aesthetics, the upper cover 3 adopts a truncated conical structure that is smaller at the top and larger at the bottom. Combined with... Figure 2 The diagram shows a perspective view of the cut-open top cover and hatch components. Figure 3 Full sectional view of the top cover and hatch components shown. Figure 4 The rotating sectional perspective view of the top cover shown indicates that the hatch drive mechanism 11 includes a rotary motor 16 and a motor connector 17 fixed to the outer periphery of the rotary motor. The output shaft 16a of the rotary motor 16 is fixedly connected to the upper bottom surface of the top cover 3, and the motor connector 17 is fixedly connected to the hatch component. When the rotary motor 16 rotates, it drives the hatch component through the motor connector 17 to either cover or expose the air intake component 13. It should be noted that the rotary motor 16 and the motor connector 17 are commercially available finished products. Figure 2 and Figure 3 The motor connector 17 has two through holes. A fixing screw passes through these holes from bottom to top to secure the rotary motor 16 to the hatch component, thus enabling the rotary motor 16 to drive the hatch component to rotate. It should be noted that, to fix the output shaft 16a, see [reference needed]. Figure 3In the preferred embodiment shown, an output shaft fixing groove 30 extends downward from the upper bottom surface of the upper cover 3. This output shaft fixing groove 30 clamps the side plane of the output shaft 16a, preventing the output shaft 16a from rotating. The side surface, upper bottom surface, and output shaft fixing groove 30 of the upper cover 3 are integrally formed as a single component.

[0025] See Figure 5 The diagram shows a rotated sectional perspective view of the hatch component, which includes an upper top plate 20 and a skirt 21 connected vertically. The upper top plate 20 is disc-shaped and is fixedly connected to the motor connector 17. The motor connector 17 has two through holes, and fixing screws pass through the through holes from bottom to top to fix the rotary motor 16 to the top plate 20. The skirt 21 includes a curved panel that extends downward from the outer circle of the upper top plate 20. The curved panel extends downward like a skirt and is close to the inner wall of the upper cover 3. The curved panel has an inner window 22. When the outer window 19 and the inner window 22 are aligned, the air intake component 13 is exposed.

[0026] To improve the stability of the door component rotation, see... Figure 3 An outer retaining ring 18 extends downward from the upper bottom surface, and an inner retaining ring 23 extends upward from the upper top plate 20. A rolling bearing 24 is provided between the outer retaining ring 18 and the inner retaining ring 23. A perspective view of the top of the hatch component fitted with the rolling bearing 24 is shown below. Figure 7 As shown. The rolling bearing 24 is coaxial with the output shaft 16a, and the hatch component can rotate smoothly around the rolling bearing 24.

[0027] See Figure 1 In a preferred embodiment, the base column includes a lower column 14 and a top plate component 15 connected sequentially from bottom to top; the human body sensing module 9 and the gate control board 7 are installed inside the lower column 14; the top plate component 15 is fixed to the top of the lower column 14 and is used to install the alcohol detection sensor 5, the detection main board 1, the linkage communication module 2, and the air inlet component 13; a mounting hole 14a is provided at the bottom end of the lower column 14; the mounting hole is used to insert an external mounting tube 29 to fix the waterproof alcohol tester, and the control tube of the waterproof alcohol tester is electrically connected to the external gate and the attendance machine through the mounting hole 14a and the mounting tube 29. A waterproof transparent window is opened on the front of the lower column 14, facing the direction of the person being tested, and the human body sensing module 9 is located behind this transparent window. See also... Figure 1 The bottom surface of the upper cover 3 is hollow, which can be fastened to the top plate component 15. A sealing ring 6 is provided between the inner edge of the upper cover 3 and the top plate component 15.

[0028] This invention can still function in light rain. The air inlet of the air inlet component 13 is designed in a trumpet shape, with the lower part of the air inlet tilting downwards to expel rainwater. See also Figure 1, combined Figure 2 and Figure 8 Below the air inlet component 13, specifically below the air inlet, there is a funnel-shaped water collection hopper 25. This water collection hopper has a downward-extending outlet 25a that drains rainwater from the waterproof outer casing. Even after the hatch component is closed during heavy rain, if rainwater still seeps in through the gap between the outer window 19 and the hatch component, the seeping rainwater will also be drained from the water collection hopper. The water collection hopper 25 further improves the waterproof capability of the alcohol tester. The air inlet component 13 is integrally formed with the water collection hopper 25 and the outlet 25a. See also... Figure 1 The top plate component 15 is provided with a lower water outlet pipe 31 and a lower air outlet 32. The lower water outlet pipe 31 is connected to the water outlet 25a for draining rainwater. The lower air outlet 32 ​​is connected to the air inlet component 13 for expelling gas blown out by personnel.

[0029] See Figure 8 The diagram shown is a top view of the alcohol detection sensor. The waterproof alcohol tester also includes a pressure detector 26, an intake solenoid valve 27, and an air pump 28. The pressure detector 26 is connected to the air inlet component 13 via an air tube to detect whether someone is blowing air into the air inlet component 13. The intake solenoid valve 27 is connected to the rear end of the alcohol detection sensor 5 via an air tube. When someone blows air into the air inlet component 13, the intake solenoid valve 27 is activated to draw the air blown by the person into the alcohol detection sensor 5 for alcohol detection. The air pump 28 is connected to the rear end of the alcohol detection sensor 5 via an air tube. After the alcohol test is completed, the air pump 28 is activated to discharge the residual gas in the alcohol detection sensor 5 through the air inlet component 13, facilitating the next alcohol test.

[0030] Combination Figure 9 The diagram shown illustrates the working principle of this alcohol tester. The detection motherboard 1 has a built-in alcohol detection sensor 5. The detection motherboard 1 is connected to the linkage communication module 2 via wires. The linkage communication module 2 is connected to the gate control board 7 and the attendance machine via signal lines. When the linkage communication module 2 receives a signal from the detection motherboard 1 indicating that the alcohol concentration exceeds the limit, it will immediately send a prohibition command to the gate control board 7 to keep the gate closed and prevent the person from passing. At the same time, the linkage communication module 2 associates the detected alcohol concentration data, the detection time, and the corresponding personnel information obtained from the attendance machine, and sends it to the data storage unit 4 for storage, which is convenient for subsequent review and management.

[0031] The human body sensing module 9 is installed on the front face of the waterproof shell. When a person approaches the alcohol tester, the human body sensing module 9 detects the human body signal and then sends an electrical signal to the door drive mechanism 11. After receiving the signal, the door drive mechanism 11 drives the door mechanism to open, so that the person can conduct the alcohol test. After the person has completed the test and left, the human body sensing module 9 detects that no one is there and sends a signal to the door drive mechanism 11 again. The door drive mechanism 11 drives the door mechanism to close, which plays an auxiliary role in dustproofing and waterproofing.

[0032] Rain sensor 10 is installed on the side of the waterproof housing and can detect whether it is raining outside in real time. When rain is detected, rain sensor 10 sends an electrical signal to door drive mechanism 11, causing door drive mechanism 11 to drive door mechanism to close, preventing rainwater from accumulating at door 12 and preventing rainwater from seeping into the equipment due to door closure.

[0033] The waterproof outer shell is made of weather-resistant polycarbonate material, with a waterproof nano-coating on its surface, effectively resisting rainwater erosion; the waterproof outer shell covers all components. The data storage unit 4 is electrically connected to the linkage communication module 2, using an erasable and rewritable memory chip, capable of storing a large amount of detection data and associated attendance information for a long time, and supporting data retrieval via external devices.

[0034] This invention's alcohol tester achieves intelligent linkage with turnstiles and attendance machines through a linkage module, improving the automation and management efficiency of pre-job alcohol testing and screening. The waterproof shell and sealing ring design give the device excellent waterproof performance. The automatic control of the door using a human body sensor module and rain sensor enhances the device's ease of use and adaptability to different environments, better meeting the needs of pre-job alcohol testing and screening in outdoor locations.

[0035] The above embodiments are merely illustrative and not intended to be limiting. Any equivalent modifications or alterations made without departing from the spirit and scope of this application should be included within the scope of the claims of this application.

Claims

1. A waterproof alcohol tester characterized by: Includes a waterproof housing, a human body sensing module (9) installed inside the waterproof housing, a door drive mechanism, door components, an alcohol detection sensor (5), a detection motherboard (1), and a linkage communication module (2); among which The waterproof outer shell is provided with an outer window (19), and the inner side of the outer window (19) corresponds to the air inlet component (13). The door component is installed inside a waterproof shell and is moved by the door drive mechanism to cover or expose the air inlet component (13). The human body sensing module (9) is installed on the front side wall of the waterproof shell to sense the human body and send an opening command to the hatch drive mechanism when a human body approaches. The alcohol detection sensor (5) is connected to the air inlet component (13) to detect the alcohol concentration in the air and send the alcohol concentration to the detection motherboard (1). The detection motherboard (1) sends control information to the linkage communication module (2) according to the alcohol concentration, and the control information includes at least the alcohol concentration of the person being tested; The linkage communication module (2) communicates with the external attendance machine and sends the control information.

2. The waterproof alcohol tester of claim 1, wherein: The linkage communication module (2) is also connected to a gate control board (7) installed inside the waterproof housing. The gate control board (7) controls the opening or closing of the external gate according to the control information.

3. The waterproof alcohol tester of claim 2, wherein: The waterproof outer shell is also equipped with a rain sensor (10), which is used to detect whether it is raining outside. When rain is detected, the rain sensor (10) sends a door closing signal to the door drive mechanism.

4. The waterproof alcohol tester of claim 3, wherein: The waterproof housing includes a base column and a top cover (3). The base column contains the human body sensing module (9), alcohol detection sensor (5), detection motherboard (1), linkage communication module (2), and gate control board (7). The top cover (3) covers the top of the base column to prevent water from entering the waterproof alcohol tester. The rain sensor (10) is provided on the side wall of the top cover (3). The top cover (3) contains the door drive mechanism and door components.

5. The waterproof alcohol tester of claim 4, wherein: The upper cover (3) adopts a truncated conical structure with a smaller top and a larger bottom. The hatch drive mechanism includes a rotary motor (16) and a motor connector (17) fixed on the outer periphery of the rotary motor. The output shaft (16a) of the rotary motor (16) is fixedly connected to the upper bottom surface of the upper cover (3), and the motor connector (17) is fixedly connected to the hatch component. When the rotary motor (16) rotates, it drives the hatch component through the motor connector (17) to cover or expose the air inlet component (13).

6. The waterproof alcohol tester of claim 5, wherein: The hatch component includes an upper top plate (20) and a skirt (21) connected vertically; wherein The upper top plate (20) is disc-shaped and is fixedly connected to the motor connector (17); The skirt (21) includes a curved panel that extends downward from the outer circle of the top plate (20), and the curved panel is provided with an inner window (22) that exposes an air inlet component (13) when the outer window (19) and the inner window (22) are aligned.

7. The waterproof alcohol tester of claim 6, wherein: An outer retaining ring (18) extends downward from the upper bottom surface, and an inner retaining ring (23) extends upward from the upper top plate (20). A rolling bearing (24) is provided between the outer retaining ring (18) and the inner retaining ring (23).

8. The waterproof alcohol tester of claim 7, wherein: The base column includes a lower column (14) and a top plate component (15) connected sequentially from bottom to top. The human body sensing module (9) and the gate control board (7) are installed inside the lower column (14). The top plate component (15) is fixed to the top of the lower column (14) for mounting the alcohol detection sensor (5), detection motherboard (1), linkage communication module (2) and air inlet component (13). The bottom end of the lower column (14) is provided with a mounting hole (14a); the mounting hole is used to insert an external mounting tube (29) to fix the waterproof alcohol tester, and the control guide of the waterproof alcohol tester is electrically connected to the external gate and attendance machine through the mounting hole (14a) and the mounting tube (29).

9. The waterproof alcohol tester of claim 1, wherein: The air inlet component (13) has a funnel-shaped water receiving hopper (25) below it, which has a downwardly extending outlet (25a) that allows rainwater to be discharged from the waterproof outer shell.

10. The waterproof alcohol tester of claim 1, wherein: The waterproof alcohol tester also includes a pressure detector (26), an intake solenoid valve (27), and an air pump (28); wherein the pressure detector (26) is connected to the air inlet component (13) through an air tube to detect whether someone is blowing air into the air inlet component (13); the intake solenoid valve (27) is connected to the rear end of the alcohol detection sensor (5) through an air tube, and when someone blows air into the air inlet component (13), the intake solenoid valve (27) is activated to draw the air blown out by the person into the alcohol detection sensor (5) for alcohol detection; the air pump (28) is connected to the rear end of the alcohol detection sensor (5) through an air tube, and when the alcohol detection is completed, the air pump (28) is activated to discharge the residual gas in the alcohol detection sensor (5) through the air inlet component (13).

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