Alcohol detection device for a vehicle and vehicle

Abstract

The utility model discloses a kind of alcohol detection device and vehicle for vehicle, alcohol detection device includes shell, alcohol detection module and environment detection module, detection cavity is provided in shell interior and is arranged in the cockpit of vehicle, gas detection hole that detection cavity is communicated with outside is provided on shell;Alcohol detection module is housed in detection cavity interior, and alcohol detection module detects the alcohol concentration of gas into detection cavity;Environment detection module is arranged in shell and detects the environmental parameter in the cockpit of vehicle, and environment detection module is connected with alcohol detection module, and environment detection module detects the humidity, temperature and / or air pressure of gas into the detection cavity, and according to the humidity, temperature and / or air pressure of gas, the alcohol concentration detected by alcohol detection module is corrected.According to the alcohol detection device of the utility model, environmental interference can be effectively eliminated to improve detection accuracy, while saving space, convenient to retrofit and easy to operate, improve user experience and driving safety guarantee.

Description

Technical Field

[0001] This utility model relates to the field of vehicles, and in particular to an alcohol detection device for vehicles and a vehicle. Background Technology

[0002] To effectively curb drunk driving, installing vehicle alcohol interlock devices can determine whether to allow the engine to start by detecting the driver's blood alcohol concentration, thus preventing drunk driving at its source.

[0003] In related technologies, the current vehicle alcohol lock device on the market adopts a combination of controller and handheld device. It relies on the driver to actively exhale to detect the alcohol concentration, which is easily affected by alcohol-containing mouthwash, drugs, etc., leading to false alarms and causing trouble for the driver. In addition, the handheld device is large in size, which affects the aesthetics of the vehicle and is inconvenient to operate. It also occupies a lot of space and is not conducive to the layout of the vehicle. Utility Model Content

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. Therefore, one objective of this invention is to provide an alcohol detection device for vehicles. The alcohol detection device according to this invention can effectively eliminate environmental interference to improve detection accuracy, while saving space, facilitating modification, and simplifying operation, thereby enhancing user experience and driving safety.

[0005] This utility model also proposes a vehicle equipped with the above-mentioned alcohol detection device.

[0006] The alcohol detection device according to this utility model is used in a vehicle. The alcohol detection device includes: a housing, wherein a detection chamber is provided inside the housing and is disposed in the driver's cabin of the vehicle, and a gas detection port is provided on the housing to connect the detection chamber with the outside; an alcohol detection module, wherein the alcohol detection module is housed inside the detection chamber and detects the alcohol concentration of the gas entering the detection chamber; and an environmental detection module, wherein the environmental detection module is disposed in the housing and detects environmental parameters in the driver's cabin of the vehicle, the environmental detection module is communicatively connected to the alcohol detection module, and the environmental detection module detects the humidity, temperature and / or air pressure of the gas entering the detection chamber, and corrects the alcohol concentration detected by the alcohol detection module according to the humidity, temperature and / or air pressure of the gas.

[0007] The alcohol detection device of this invention, by setting a gas detection port, can directly collect the gas in the cockpit, detecting not only the driver's exhaled breath but also the overall alcohol concentration in the cockpit. Simultaneously, the environmental detection module can detect environmental parameters such as temperature, humidity, and air pressure in the cockpit, and correct the detected alcohol concentration data according to a preset algorithm and model, effectively eliminating the interference of environmental factors on the detection results, avoiding false alarms caused by external factors, improving the accuracy of alcohol concentration detection, and enabling more precise determination of whether the driver has consumed alcohol.

[0008] According to the present invention, the alcohol detection device has a compact overall structure. The housing is set in the vehicle's driver's cabin and can be flexibly installed according to the vehicle's interior space, such as under the steering wheel or on the dashboard. It does not take up too much space and will not significantly affect the vehicle's appearance after installation, thus maintaining the vehicle's aesthetics. It also facilitates aftermarket modifications and reduces the difficulty and cost of modifications.

[0009] The alcohol detection device of this utility model eliminates the need for the driver to actively blow into the air. It naturally collects the gas in the cockpit through the gas detection port for detection, reducing the driver's burden and improving the convenience of detection and user experience.

[0010] According to some embodiments of this utility model, the alcohol detection module is constructed as an infrared sensor. The infrared sensor is provided with a transmitter and a receiver. The transmitter and the receiver are spaced apart from each other inside the detection cavity. The transmitter emits infrared light in the mid-infrared band toward the detection cavity. The receiver determines the alcohol concentration of the gas in the detection cavity based on the degree of attenuation of the received light intensity.

[0011] According to some embodiments of this utility model, the environmental detection module includes: a temperature detection device disposed on the housing and used to detect the ambient temperature inside the cockpit; a humidity detection device disposed on the housing and used to detect the ambient humidity inside the cockpit; and an air pressure detection device disposed on the housing and used to detect the air pressure inside the cockpit. The alcohol detection device further includes: a data processing device, which is communicatively connected to both the alcohol detection module and the environmental detection module. The data processing module calculates the alcohol concentration based on the light intensity attenuation, the ambient temperature, the ambient humidity, and the air pressure.

[0012] According to some embodiments of the present invention, the alcohol detection device further includes a feedback device, which is disposed on the housing and electrically connected to the data processing device. The feedback device emits light or sound after the alcohol concentration exceeds a preset value.

[0013] According to some embodiments of the present invention, the feedback device is configured as a display screen disposed on the surface of the housing, and the display screen is adapted to display a warning message after the alcohol concentration exceeds a preset value.

[0014] According to some embodiments of the present invention, the alcohol detection device further includes a communication module, which is connected to the data processing device and is used to send the detection results to the data platform.

[0015] According to some embodiments of the present invention, the housing includes: a bottom cover, the bottom cover being strip-shaped; a side plate, the side plate being disposed around the outer periphery of the bottom cover; and an end cover, the end cover being connected to the edge of the side plate and jointly defining the detection cavity between the bottom cover and the side plate; wherein at least one of the bottom cover, the side plate, and the end cover has the gas detection hole formed thereon.

[0016] According to some embodiments of the present invention, one end of the end cap is formed with a circular air intake area, and a plurality of gas detection holes are formed in the air intake area and spaced apart from each other; a bottom wall is formed on the bottom cap corresponding to the air intake area, and the bottom wall protrudes in a direction away from the end cap.

[0017] According to some embodiments of the present invention, a connector is provided on the bottom cover, and the connector is constructed as a snap fastener or a magnetic component.

[0018] The vehicle according to this utility model is briefly described below.

[0019] The vehicle according to this utility model includes the alcohol detection device described in any of the above embodiments. Since the vehicle according to this utility model includes the alcohol detection device described in any of the above embodiments, the vehicle according to this utility model can easily and accurately detect the alcohol concentration in the cabin using the alcohol detection device, making it convenient to use.

[0020] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0021] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0022] Figure 1 This is a front structural schematic diagram of an alcohol detection device according to some embodiments of the present invention;

[0023] Figure 2 This is a side view of an alcohol detection device according to some embodiments of the present invention;

[0024] Figure 3 This is a structural diagram of an alcohol detection device according to some embodiments of the present invention.

[0025] Figure label:

[0026] 1. Alcohol detection device;

[0027] 11. Bottom cover; 12. Side panel;

[0028] 13. End cap; 131. Air intake area;

[0029] 14. Gas detection port;

[0030] 15. Display screen; 16. Switch. Detailed Implementation

[0031] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0032] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0033] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0034] In related technologies, the current vehicle alcohol lock device on the market adopts a combination of controller and handheld device. It relies on the driver to actively exhale to detect the alcohol concentration, which is easily affected by alcohol-containing mouthwash, drugs, etc., leading to false alarms and causing trouble for the driver. In addition, the handheld device is large in size, which affects the aesthetics of the vehicle and is inconvenient to operate. It also occupies a lot of space and is not conducive to the layout of the vehicle.

[0035] The following is for reference. Figures 1-3 Describes an alcohol detection device 1 according to an embodiment of the present invention.

[0036] like Figures 1-3 As shown, the alcohol detection device 1 according to this utility model is used in a vehicle. The alcohol detection device 1 includes a housing, an alcohol detection module, and an environmental detection module. A detection chamber is provided inside the housing and is located within the vehicle's driver's cabin. The driver's cabin is the space where the driver is located; installing the housing in this location allows for direct detection of gases in the driver's surrounding environment. A gas detection port 14 is provided on the housing to connect the detection chamber to the outside environment. Gas from the outside driver's cabin can enter the detection chamber through the gas detection port 14 for subsequent alcohol concentration detection.

[0037] The alcohol detection module is housed inside the detection chamber, allowing it to directly contact the gas entering the chamber through the gas detection port 14. The module detects the alcohol concentration of the gas entering the chamber. When the driver exhales gas or gas containing alcohol from the cockpit enters the detection chamber, the module measures and analyzes the alcohol content to obtain alcohol concentration data.

[0038] An environmental detection module is housed within the casing and monitors environmental parameters within the vehicle's cabin. This module can detect various environmental parameters, such as temperature, humidity, and air pressure. These parameters can affect the alcohol detection module's results. For example, changes in temperature may alter the sensitivity of the sensor within the module, and excessively high or low humidity may interfere with the interaction between alcohol molecules and the sensor.

[0039] The environmental detection module communicates with the alcohol detection module to provide environmental parameters, and corrects the alcohol concentration detected by the alcohol detection module based on these parameters. The environmental detection module provides the detected environmental parameters to the alcohol detection module. Upon receiving the environmental parameters, the alcohol detection module corrects its detected alcohol concentration data according to a preset algorithm and model. This eliminates the influence of environmental factors on the detection results, improves the accuracy and reliability of alcohol concentration detection, and ensures more accurate alcohol concentration data under different environmental conditions. This allows for a more accurate determination of whether the driver has been drinking, thus ensuring driving safety.

[0040] According to the alcohol detection device 1 of this utility model, by setting a gas detection port 14, the gas in the cockpit can be directly collected. It can detect not only the driver's exhaled breath but also the overall alcohol concentration in the cockpit. Simultaneously, the environmental detection module can detect environmental parameters such as temperature, humidity, and air pressure in the cockpit and feed them back to the alcohol detection module. The alcohol detection module corrects the detected alcohol concentration data according to a preset algorithm and model, effectively eliminating the interference of environmental factors on the detection results, avoiding false alarms caused by external factors, improving the accuracy of alcohol concentration detection, and enabling more precise determination of whether the driver has consumed alcohol.

[0041] According to the present invention, the alcohol detection device 1 has a compact overall structure. The housing is set in the vehicle's driver's cabin and can be flexibly installed according to the vehicle's interior space, such as under the steering wheel or on the dashboard. It does not take up too much space and will not have a significant impact on the vehicle's appearance after installation, thus maintaining the vehicle's aesthetics. It also facilitates aftermarket modifications and reduces the difficulty and cost of modifications.

[0042] According to the alcohol detection device 1 of this utility model, the driver does not need to actively blow into the air. The gas in the cockpit is naturally collected through the gas detection port 14 for detection. The driver does not need to perform any additional operations, which reduces the driver's burden and improves the convenience of detection and user experience.

[0043] Therefore, the alcohol detection device 1 according to this utility model can effectively eliminate environmental interference to improve detection accuracy, while saving space, being easy to modify and operate, thus improving user experience and driving safety.

[0044] According to some embodiments of this utility model, the alcohol detection module is constructed as an infrared sensor. The infrared sensor is provided with a transmitter and a receiver, which are spaced apart from each other inside the detection cavity, so that infrared light can pass through the gas to be tested with sufficient space within the detection cavity. The transmitter emits mid-infrared infrared light towards the detector, and the receiver determines the alcohol concentration of the gas in the detection cavity based on the degree of attenuation of the received light intensity.

[0045] During the detection process, the transmitter emits infrared light in the mid-infrared band toward the receiver. Based on the principle of infrared spectroscopy absorption, alcohol molecules (ethanol C2H5OH) have a strong characteristic absorption peak in the mid-infrared band (e.g., around 3.4μm), meaning that alcohol molecules selectively absorb infrared light in the mid-infrared band.

[0046] When the mid-infrared light emitted by the transmitter passes through the gas to be tested in the detection cavity, if the gas contains alcohol molecules, the alcohol molecules will absorb some of the infrared light, causing the intensity of the infrared light reaching the receiver to decrease.

[0047] The receiver can determine the alcohol concentration in the detection chamber based on the attenuation of the received light intensity. According to Lambert-Beer's law, the light intensity attenuation is exponentially related to the alcohol concentration. In other words, by detecting the light intensity attenuation and combining it with the relationship described by Lambert-Beer's law, the receiver can calculate the alcohol concentration in the detection chamber, achieving accurate detection of the alcohol concentration. The formula for Lambert-Beer's law is: I = I0e^(-I / I0) -αcd Where I0 is the initial light intensity, I is the transmitted light intensity, α is the absorption coefficient, c is the concentration, and d is the optical path length.

[0048] According to some embodiments of the present invention, the environmental detection module includes a temperature detection device, a humidity detection device, and an air pressure detection device. The temperature detection device, humidity detection device, and air pressure detection device are all mounted on the housing to enable real-time detection of environmental parameters inside the vehicle's cab.

[0049] A temperature detection device is installed in the housing and is used to detect the ambient temperature inside the cockpit. Since the absorption coefficient (α) of the infrared sensor is affected by temperature, the absorption characteristics of the infrared sensor for alcohol molecules change at different temperatures. By acquiring real-time ambient temperature data through the temperature detection device, the subsequent data processing module can correct the absorption coefficient (α) value in the absorption model parameters of the infrared sensor based on the ambient temperature data, thereby eliminating the influence of temperature on the alcohol concentration detection results and improving the accuracy of the detection.

[0050] A humidity detection device is installed in the housing and is used to detect the ambient humidity inside the cockpit. Water vapor can interfere with the absorption of infrared light (especially in the near-infrared band), causing the detected absorption signal to be not entirely caused by alcohol molecules, but rather includes the combined absorption signal of alcohol and water. The data provided by the humidity detection device helps the data processing module distinguish between the absorption signals of alcohol and water. By analyzing and processing the humidity data, the alcohol absorption signal is corrected, avoiding erroneous alcohol concentration detection results due to water vapor interference.

[0051] A pressure detection device is installed in the casing and is used to detect the air pressure inside the cockpit. Changes in air pressure affect the density of the gas, and changes in gas density affect the distribution of alcohol molecules in the gas and the interaction between infrared light and alcohol molecules, thus affecting the calculated alcohol concentration. The pressure data acquired by the pressure detection device, combined with the ideal gas law c = P / RT (where c is the molar concentration of the gas, P is the gas pressure, R is the ideal gas constant, and T is the thermodynamic temperature of the gas), allows the data processing module to correct the concentration calculation, ensuring accurate calculation of the alcohol concentration under different pressure conditions.

[0052] The alcohol detection device also includes a data processing device, which is connected to the alcohol detection module and the environmental detection module. The data processing module calculates the alcohol concentration based on the light intensity attenuation, ambient temperature, ambient humidity and air pressure.

[0053] When the alcohol detection device starts working, the infrared sensor collects the gas absorptivity, while the temperature, humidity, and air pressure sensors in the environmental detection module update real-time environmental parameter data. The data processing module receives the preliminary detection data obtained by the alcohol detection module based on the light intensity attenuation, as well as the ambient temperature, humidity, and air pressure data provided by the environmental detection module. Then, based on this data, the data processing module comprehensively considers the impact of various environmental factors on alcohol concentration detection, adjusts the absorption model parameters of the infrared sensor, eliminates potential outliers, and finally, after a series of calculations and corrections, outputs the compensated alcohol concentration. This effectively improves the accuracy and reliability of alcohol concentration detection, providing a more accurate basis for determining whether a driver has been drinking.

[0054] According to some embodiments of this utility model, such as Figure 3 As shown, the alcohol detection device 1 also includes a feedback device, which is mounted on the housing and electrically connected to the data processing device. The feedback device emits light or sound when the alcohol concentration exceeds a preset value. After processing the data provided by the alcohol detection module and the environmental detection module, the data processing device obtains the final alcohol concentration value. At this point, the data processing device compares the final alcohol concentration value with a preset threshold. Once the detected alcohol concentration exceeds the preset threshold, it means that the driver may have consumed alcohol and there is a risk of driving under the influence. The feedback device will trigger an audible and visual alarm to warn the driver to take appropriate measures.

[0055] The feedback device can use a variety of warning methods, such as emitting red flashing light through LEDs or emitting warning sound through a buzzer, to ensure that the driver can notice in time, or the sound and light can be combined.

[0056] The installation location of the feedback device can be flexibly chosen, such as near the steering wheel, in the dashboard area, or on the center console—any easily observable location. Furthermore, the alarm duration and intensity can be adjusted according to actual needs. Through a real-time, intuitive feedback mechanism, driving safety can be effectively improved, and the risk of drunk driving can be reduced.

[0057] It should be noted that the feedback device can have a variety of feedback functions to convey the alcohol concentration test results to the driver in a more intuitive and clear way.

[0058] Specifically, when the data processing device calculates that the blood alcohol concentration is below the preset value, the feedback device will emit a green light, clearly indicating to the driver that their current blood alcohol concentration is within a safe range and they can drive normally without worrying about alcohol affecting driving safety. However, once the blood alcohol concentration exceeds the preset value, indicating a potential risk of drunk driving, the feedback device will quickly switch to emitting a red light. The red light immediately alerts the driver, clearly informing them that their blood alcohol concentration has exceeded the legal limit and they must stop driving, thus effectively preventing drunk driving.

[0059] According to some embodiments of this utility model, such as Figure 1 As shown, the feedback device is configured as a display screen 15 mounted on the surface of the housing. The display screen 15 is adapted to display a warning message after the alcohol concentration exceeds a preset value. By configuring the feedback device as a display screen 15 mounted on the surface of the housing, the space on the surface of the housing can be fully utilized. This will not interfere with the layout and operation of other modules inside the alcohol detection device 1, and will ensure that the driver can conveniently and intuitively see the feedback information in the cockpit.

[0060] The display screen 15 has an intelligent feedback function. It is connected to the data processing device and can receive the alcohol concentration data calculated by the data processing device in real time. When the data processing device determines that the alcohol concentration does not exceed the preset value, the display screen 15 can maintain normal display status, such as displaying the specific value of the current alcohol concentration, or displaying prompts such as "alcohol concentration normal", so that the driver can clearly understand his own condition.

[0061] Once the blood alcohol concentration exceeds the preset value, the display screen 15 will immediately respond by showing a warning message. The warning message can be a prominent text prompt or a combination of warning symbols, such as a red exclamation mark. This intuitive display method effectively draws the driver's attention, informing them that the blood alcohol concentration has exceeded the safe range.

[0062] According to some embodiments of this utility model, such as Figure 1 As shown, a switch 16 is embedded in the display screen 15. By operating the switch 16, the start and stop status of the alcohol detection device 1 can be conveniently controlled to meet different usage needs.

[0063] According to some embodiments of this utility model, such as Figure 3As shown, the alcohol detection device 1 also includes a communication module, which is connected to the data processing device, enabling efficient and stable data transmission between them. The communication module is used to send the detection results to the data platform. After the data processing device completes a series of processes such as calculating the alcohol concentration and compensating for environmental parameters, it obtains the final alcohol concentration detection result. At this time, the communication module promptly receives these detection result data and sends the data to the designated data platform.

[0064] During alcohol concentration detection, environmental parameters such as temperature, humidity, and air pressure acquired by the environmental detection module are transmitted to the data processing device. Based on the temperature data, the data processing device accurately corrects the absorption coefficient (α) value in the infrared sensor's absorption model parameters, thereby eliminating the influence of temperature on the alcohol concentration detection results and ensuring the accuracy of detection results under different temperature environments. For humidity data, the data processing device analyzes and processes the data to effectively distinguish between the absorption signals of alcohol and water, correcting the alcohol absorption signal. For air pressure data, the data processing device uses the ideal gas law to correct the concentration calculation, ensuring accurate calculation of alcohol concentration under different air pressure conditions. By comprehensively considering environmental parameter data, the data processing device compensates and corrects the preliminary detection data obtained by the alcohol detection module, ultimately outputting the compensated alcohol concentration, improving the accuracy and reliability of alcohol concentration detection.

[0065] Specifically, the data platform can be in the cloud or a regulatory platform.

[0066] When the data platform is cloud-based, alcohol test data can be analyzed to correlate drunk driving behavior with various factors, such as holidays, weather conditions, and road types. Simultaneously, the cloud also enables real-time data sharing and remote access. Traffic management departments, vehicle operating companies, and other relevant parties can access cloud data anytime, anywhere via the internet to promptly understand drivers' alcohol test results, improving management efficiency and response speed.

[0067] When the data platform serves as a regulatory platform, it can send real-time alerts to vehicle operators, traffic enforcement agencies, and other relevant personnel using alcohol test data. These alerts include detailed information such as vehicle details, driver information, test time, and alcohol concentration, enabling rapid action to prevent drunk driving.

[0068] According to some embodiments of this utility model, the housing includes a bottom cover 11, a side plate 12, and an end cover 13. The bottom cover 11 is strip-shaped, and the shape of the strip conforms to the natural gripping shape of the human hand, while providing space for the installation and layout of the internal detection module.

[0069] The side plate 12 is disposed around the outer periphery of the bottom cover 11, and together with the bottom cover 11, it can form a semi-enclosed space structure, which serves to protect the internal components. At the same time, the side plate 12 can also enhance the overall strength and stability of the shell.

[0070] The end cap 13 connects to the edge of the side plate 12 and together with the bottom cap 11 and the side plate 12, defines the detection chamber. The detection chamber is the area for detecting the alcohol concentration of the gas, and the alcohol detection module, environmental detection module, etc. are all installed in the detection chamber. The connection between the end cap 13 and the edge of the side plate 12 makes the detection chamber form a relatively closed environment, which helps to ensure the accuracy and stability of the detection.

[0071] At least one of the bottom cover 11, side plate 12, and end cover 13 has a gas detection hole 14 formed thereon. The gas detection hole 14 enables communication between the detection chamber and the external environment, allowing the gas in the cockpit to smoothly enter the detection chamber and make full contact with the alcohol detection module and other components inside the detection chamber, thereby completing the detection of alcohol concentration.

[0072] Specifically, the gas detection port 14 can be located on the bottom cover 11, the side plate 12, or the end cover 13. By providing the gas detection port 14 on at least one of the bottom cover 11, the side plate 12, and the end cover 13, the gas detection requirements under different installation environments and usage needs can be flexibly met, ensuring that the alcohol detection device 1 can accurately and effectively detect the alcohol concentration.

[0073] According to some embodiments of this utility model, such as Figure 1 and Figure 2 As shown, the length of the end cap 13 is d and the width is s1, and the width of the side plate 12 is s2, which satisfies: 6cm≤d≤8cm, 1cm≤s1≤2cm, 1cm≤s2≤2cm, making the overall structure of the alcohol detection device 1 compact and small.

[0074] According to some embodiments of this utility model, such as Figure 1 As shown, a circular air intake area 131 is formed at one end of the end cap 13. The circular shape has no sharp edges or corners, resulting in high structural strength, ease of processing, and an aesthetically pleasing appearance. Multiple gas detection holes 14 are formed within the air intake area 131, spaced apart from each other. This improves the efficiency of gas entering the detection chamber, ensuring sufficient gas can quickly and smoothly enter the chamber, thereby enhancing detection sensitivity and accuracy. Simultaneously, the spaced-apart arrangement of the multiple gas detection holes 14 ensures uniform gas distribution and entry into the detection chamber.

[0075] like Figure 2As shown, a bottom wall corresponding to the air inlet area 131 is formed on the bottom cover 11, and the bottom wall protrudes in the direction away from the end cover 13. The protruding bottom wall can increase the internal space of the detection chamber, providing more space for the installation and layout of internal components, so that the internal components can be distributed more rationally, improving the stability and reliability of the detection. At the same time, the detection chamber can hold more gas, which helps to detect the alcohol concentration of the gas.

[0076] During the alcohol detection process, air from the cockpit enters the detection chamber through multiple gas detection holes 14 spaced apart in the circular air intake area at one end of the end cover. The air entering the detection chamber interacts with the alcohol detection module and environmental detection module installed therein.

[0077] The alcohol detection module is constructed as an infrared sensor, with its transmitter emitting mid-infrared light towards the receiver. Based on the principle of infrared spectroscopy absorption, alcohol molecules exhibit a strong characteristic absorption peak in the mid-infrared band. When the infrared light emitted by the transmitter passes through a detection chamber filled with the gas to be tested, if the gas contains alcohol molecules, these molecules will absorb some of the infrared light, causing an attenuation of the infrared light intensity reaching the receiver. The receiver, based on the degree of light intensity attenuation and considering the exponential relationship between light intensity attenuation and alcohol concentration described by the Lambert-Beer law, makes a preliminary judgment on the alcohol concentration in the gas within the detection chamber.

[0078] Meanwhile, the air also interacts with the environmental monitoring module. The temperature detection device in the environmental monitoring module detects the ambient temperature inside the cockpit. Since the absorption coefficient (α) of the infrared sensor is affected by temperature, the absorption characteristics of the infrared sensor for alcohol molecules change at different temperatures. This allows for subsequent correction of the absorption coefficient (α) value in the absorption model parameters of the infrared sensor based on the ambient temperature data, thereby eliminating the influence of temperature on the alcohol concentration detection results. The humidity detection device detects the ambient humidity inside the cockpit. Water vapor interferes with the absorption of infrared light (especially in the near-infrared band), causing the detected absorption signal to be not entirely caused by alcohol molecules, but rather includes a combined absorption signal of alcohol and water. The data provided by the humidity detection device helps the data processing module distinguish the absorption signals of alcohol and water, and through analysis and processing of the humidity data, corrects the alcohol absorption signal. The air pressure detection device monitors the air pressure inside the cockpit. Changes in air pressure affect the density of the gas, which in turn affects the distribution of alcohol molecules in the gas and the interaction between infrared light and alcohol molecules. The air pressure data obtained by the air pressure detection device, combined with the ideal gas law c = P / RT (where c is the molar concentration of the gas, P is the gas pressure, R is the ideal gas constant, and T is the thermodynamic temperature of the gas), can correct the concentration calculation, ensuring that the alcohol concentration can be accurately calculated under different air pressure conditions.

[0079] According to some embodiments of this utility model, a connector is provided on the bottom cover 11. By providing a connector on the bottom cover 11, it is convenient to connect the bottom cover 11 to the corresponding mounting part when installing or fixing the alcohol detection device 1, ensuring that the device can be stably placed or installed in the required position, and facilitating the installation or fixing of the alcohol detection device 1 in the cockpit.

[0080] The connector is constructed as a snap-fit ​​or magnetic component.

[0081] When the connector is constructed as a snap-fit, the snap-fit ​​has a certain degree of elasticity, enabling quick and convenient connection and disassembly with corresponding slots and other components. When installing the alcohol detection device 1, simply align the snap-fit ​​on the bottom cover 11 with the corresponding slot and press or push firmly; the snap-fit ​​will automatically engage, securing the device. This simple operation improves installation efficiency. Furthermore, when disassembling the alcohol detection device 1, the snap-fit ​​can be easily removed from the slot, facilitating maintenance, replacement, or relocation of the device.

[0082] If the connector is constructed as a magnetic component, it possesses magnetism. During installation of the alcohol detection device 1, the magnetic component on the bottom cover 11 can attract the mounting portion (such as a metal surface) with ferromagnetic material through magnetic force, thus fixing the alcohol detection device 1. The magnetic connection method is characterized by convenient installation and disassembly; simply bring the device close to the mounting portion, and the magnetic component will automatically adhere, requiring no complex operations. Furthermore, the magnetic connection offers flexibility, allowing adjustment of the device's position and angle as needed.

[0083] The vehicle according to this utility model is briefly described below.

[0084] The vehicle according to this utility model includes the alcohol detection device 1 in any of the above embodiments. Since the vehicle according to this utility model includes the alcohol detection device 1 in any of the above embodiments, the alcohol concentration in the cabin can be easily and accurately detected by the alcohol detection device 1, making it convenient to use.

[0085] According to some embodiments of this utility model, the vehicle constructs vehicle control logic based on the detection results obtained by the alcohol detection device 1 to achieve automatic control of the vehicle's start-up or lock-up state. Specifically, when the detection result indicates that the alcohol concentration exceeds a preset safety threshold, the vehicle lock-up mechanism is triggered to prevent the vehicle from starting; when the detection result meets the alcohol concentration safety standard, the vehicle lock-up state is released, allowing the vehicle to start normally.

[0086] According to some embodiments of the present invention, the vehicle also includes a camera installed in the driver's cabin. Based on the alcohol concentration detection results obtained by the alcohol detection device 1 and the facial recognition results of the driver by the camera, the vehicle uses a preset judgment logic to comprehensively judge the alcohol concentration, thereby improving the judgment accuracy.

[0087] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0088] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An alcohol detection device for vehicles, characterized in that, include: The housing has a detection chamber inside and is located in the driver's cabin of the vehicle. The housing has a gas detection port (14) that connects the detection chamber to the outside. An alcohol detection module, which is housed inside the detection chamber, detects the alcohol concentration of the gas entering the detection chamber; An environmental detection module is disposed in the housing and detects environmental parameters inside the vehicle's driver's cabin. The environmental detection module is communicatively connected to the alcohol detection module. The environmental detection module detects the humidity, temperature, and / or air pressure of the gas entering the detection chamber and corrects the alcohol concentration detected by the alcohol detection module based on the humidity, temperature, and / or air pressure of the gas.

2. The alcohol detection device for vehicles according to claim 1, characterized in that, The alcohol detection module is constructed as an infrared sensor, which is provided with a transmitter and a receiver. The transmitter and the receiver are spaced apart from each other inside the detection cavity. The transmitter emits infrared light in the mid-infrared band toward the detection cavity. The receiver determines the alcohol concentration of the gas in the detection cavity based on the degree of attenuation of the received light intensity.

3. The alcohol detection device for vehicles according to claim 2, characterized in that, The environmental detection module includes: A temperature detection device is disposed on the housing and used to detect the ambient temperature inside the cockpit; A humidity detection device is disposed on the housing and used to detect the ambient humidity inside the cockpit; A pressure detection device, disposed on the housing and used to detect the pressure inside the cockpit; wherein, the alcohol detection device further includes: The data processing device is communicatively connected to the alcohol detection module and the environmental detection module. The data processing device calculates the alcohol concentration based on the light intensity attenuation, the ambient temperature, the ambient humidity, and the air pressure.

4. The alcohol detection device for vehicles according to claim 3, characterized in that, Also includes: A feedback device is disposed on the housing and electrically connected to the data processing device. The feedback device emits light or sound when the alcohol concentration exceeds a preset value.

5. The alcohol detection device for vehicles according to claim 4, characterized in that, The feedback device is configured as a display screen (15) disposed on the surface of the housing, and the display screen (15) is adapted to display a warning message after the alcohol concentration exceeds a preset value.

6. The alcohol detection device for vehicles according to claim 3, characterized in that, Also includes: A communication module is connected to the data processing device and is used to send detection results to the data platform.

7. The alcohol detection device for vehicles according to claim 1, characterized in that, The housing includes: Bottom cover (11), the bottom cover (11) is strip-shaped; Side plate (12), the side plate (12) is disposed around the outer periphery of the bottom cover (11); End cap (13), the end cap (13) is connected to the edge of the side plate (12) and together with the bottom cap (11) and the side plate (12) defines the detection cavity; wherein At least one of the bottom cover (11), the side plate (12) and the end cover (13) has the gas detection hole (14) formed on it.

8. The alcohol detection device for vehicles according to claim 7, characterized in that, One end of the end cap (13) is formed with a circular air intake area (131), and a plurality of gas detection holes (14) are formed in the air intake area (131) and spaced apart from each other. The bottom cover (11) has a bottom wall corresponding to the air intake area (131), and the bottom wall protrudes in a direction away from the end cover (13).

9. The alcohol detection device for vehicles according to claim 7, characterized in that, The bottom cover (11) is provided with a connector, which is constructed as a snap fastener or a magnetic component.

10. A vehicle, characterized in that, Includes the alcohol detection device for vehicles as described in any one of claims 1-9.

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