KR20230022313A - System for preventing drunk driving having mask-wearing mode and method for using the same - Google Patents

Abstract

Introduced are a drunk driving prevention system and a drunk driving prevention method using the same. The drunk driving prevention system having a mask wearing mode of the present invention comprises: a camera which captures an image including a face of a driver seated in a driver's seat; a sensor module detecting alcohol contained in a driver's breath; and a control module determining whether the driver is wearing a mask based on the image captured by the camera, diagnosing a driver's drinking status based on an alcohol concentration detected by the sensor module, and operating a start limiting apparatus of a vehicle. Provided are the drunk driving prevention system including a separate breathalyzer control logic and the drunk driving prevention method using the same.

Description

Drunk driving prevention system having mask wearing mode and method for preventing drunk driving using same {SYSTEM FOR PREVENTING DRUNK DRIVING HAVING MASK-WEARING MODE AND METHOD FOR USING THE SAME}

The present invention relates to a system and method for preventing drunk driving, and more particularly, to a drunk driving prevention technology for improving usability and situational accuracy of the drunk driving prevention system.

Since traffic accidents caused by drunk driving lead to major accidents, the seriousness of accidents and damage caused by drunk driving is continuously publicized, but drunk driving is not decreasing.

Since an accident caused by drunk driving is highly likely to lead to a serious accident leading to death, a means to fundamentally prevent such a drunk driving accident is required.

On the other hand, while drunk driving accidents occur continuously in Korea, the reality is that there is a shortage of police personnel to crack down on drunk driving. In addition, crackdowns on drinking and driving cause traffic congestion, and it is a reality that frequent drinking crackdowns are difficult in areas with high traffic volumes.

Accordingly, in order to fundamentally prevent drunk driving, attempts are being made to adopt a system for preventing drunk driving in a vehicle.

In this regard, Korean Registered Patent No. 10-1705968 discloses that when a driver makes contact with a breathalyzer, the driver's drinking state is checked using the measured biometric information, and the shift lever of the vehicle is unlocked only when the driver is not drinking. There is a technology to prevent drunk driving.

In addition, Japanese Unexamined Patent Publication No. 2005-096663 discloses a technique for preventing drunk driving by determining whether or not the driver has been drinking by using the driver's breath, and shutting off electricity for starting when it is determined that the driver is drunk.

In addition, Japanese Patent Registration No. 5348457 includes a camera and an alcohol detection device for photographing the driver, and an interlock device that prohibits starting of the engine when alcohol is detected in the driver's exhaled air by the alcohol detection device. The driver monitoring device is disclosed. In particular, in Japanese Patent Registration No. 5348457, the engine is started only in an authentication situation in which the driver has not changed by reflecting the result of taking multiple shots by the camera at different timings immediately before and after the alcohol detection operation by the alcohol detection device. A device implemented to make this possible is disclosed.

On the other hand, as fine dust has recently worsened and infectious diseases have spread, cases of drivers wearing masks are increasing. When a driver wears a mask, the inconvenience of having to take off the mask exists in order to determine whether the driver is driving under the influence of alcohol through breathing through an existing system. In addition, there was a problem that the possibility of virus transmission to the passenger in the process of taking off the mask and proceeding with the breathing certification procedure existed.

KR 10-1705968 B JP 2005-096663 A JP 5348457 B

The present invention has been proposed to solve these problems, and provides a drunk driving prevention system including a separate alcohol test control logic capable of measuring drunk driving while a driver is wearing a mask, and a method for preventing drunk driving using the same. is to do

In particular, an object of the present invention is to provide a drunk driving prevention system and method capable of directly determining whether a drunk driving prevention system is wearing a mask and effectively measuring whether or not a drunk driving is performed even when the driver is wearing a mask.

In order to achieve the above object, a drunk driving prevention system having a mask wearing mode according to the present invention includes a camera for capturing an image including a face of a driver seated in a driver's seat; A sensor module for detecting alcohol contained in the driver's breath; And a control module that determines whether the driver is wearing a mask based on the image captured by the camera, diagnoses the driver's drinking state from the alcohol concentration detected by the sensor module, and operates the start limiting device of the vehicle; The control module is configured to complete breathing authentication only when the driver's respiratory volume equal to or greater than a preset first reference respiratory volume is supplied to the sensor module, and detects alcohol contained in the driver's exhalation by the sensor module, and the control module is configured so that the driver wears a mask. If it is determined that it is, the reference respiratory volume for completion of respiratory certification is reset by lowering it to the second reference respiratory volume.

A storage unit for storing image information captured by the camera and alcohol detection information detected by the sensor module may be further included.

The sensor module includes a suction unit for inhaling the driver's exhaled air; It may include a; sensor unit having an alcohol detection sensor for detecting alcohol contained in the driver's exhaled breath.

The control module includes an authentication unit that determines whether or not the driver is wearing a mask from an image captured by the camera, and determines whether or not respiratory certification is completed based on the driver's respiratory volume supplied to the sensor module; a determination unit for diagnosing a driver's drinking state by comparing the alcohol concentration detected by the sensor module with a reference concentration; and a vehicle control unit configured to transmit a control command for operating an ignition limiting device when it is determined that the driver is in a drinking state exceeding a reference concentration.

In addition, a display unit for displaying guidance information according to entering the mask wearing mode to the driver, and the display unit may output guidance information so that the driver is located close to the inlet side of the inlet of the sensor module when entering the mask wearing mode.

The camera is configured to transmit the captured image information to the image processing unit of the control module in real time, the image processing unit is configured to generate a guideline for the position of the driver's face, and transmit image information in which the guideline overlaps to the display unit, The display unit is configured to output image information in which the guideline overlaps in real time, and upon entering the mask wearing mode, the image processing unit may enlarge and provide the size of the guideline at a preset ratio.

When entering the mask wearing mode, the control module may control the sensor module to increase the rotational speed of the fan installed on the inlet side of the inlet.

The storage unit stores vehicle information including a window opening/closing state and an air conditioner operating state before respiration authentication starts, and the control module controls to close the vehicle windows and switch the vehicle to a ventilation circulation mode when respiration authentication is initiated, and controls After completing the breath authentication, the module may control to switch the vehicle state according to the vehicle information before the breath authentication stored in the storage unit.

In addition, the drunk driving prevention method having a mask wearing mode according to the present invention includes the steps of starting breathing authentication by a driver's request; Determining whether a driver is wearing a mask based on an image captured by a camera; a drinking determination step of diagnosing a driver's drinking state by detecting alcohol from the driver's exhaled breath, by the control module, when a respiratory volume equal to or greater than a standard respiratory volume is inhaled by the sensor module; and a start-up determination step of determining whether or not to limit vehicle start-up according to the diagnosis result in the drinking-determination step, wherein, in the drinking-determination step, the control module controls the sensor module to variably set the reference respiratory volume according to whether or not a mask is worn. can do.

In the drinking determination step, when it is determined that the mask is not worn, the process of detecting alcohol during exhalation and diagnosing the drinking state is performed only when the driver's respiratory volume equal to or higher than the first reference respiratory volume preset by the sensor module is inhaled, and when it is determined that the mask is worn , The sensor module is configured to perform the process of detecting alcohol during exhalation and diagnosing the drinking state only when the driver's respiratory volume equal to or higher than the preset second reference respiratory volume is inhaled, and the first reference respiratory volume may be set to a value greater than the second reference respiratory volume. there is.

The method may further include storing the image information captured by the camera and the alcohol detection information detected by the sensor module in a storage unit before starting the vehicle.

In the drinking determination step, when it is determined by the control module that the driver is in a drinking state exceeding the reference concentration, it is determined that the driver is in a drinking state incapable of driving, and in the starting restriction determining step, the control module operates the starting limiting device. A control command can be sent.

In the drinking determination step, a breathing authentication guide display step of displaying to the driver whether to enter the mask wearing mode according to whether or not the mask is worn may be included through the display unit.

In the breathing authentication guide display step, upon entering the mask wearing mode, guide information may be output through the display unit so that the driver is positioned close to the inlet side of the inlet of the sensor module.

In the drinking determination step, the image information captured by the camera is transmitted in real time to the image processing unit of the control module, and the image processing unit generates image information overlapping the driver's face position guideline, transmits the image information to the display unit, and guides the driver through the display unit. It may be configured to output image information with overlapping lines in real time.

In the breathing authentication guide display step, with or after the guide information output, the size of the guide line through the display unit may be configured to be enlarged at a preset ratio and provided.

The drinking determination step may further include controlling to increase the rotational speed of the fan installed at the inlet side of the inlet by a control module together with or after outputting the guidance information.

In the step of starting breath authentication, the storage unit stores vehicle information including the window opening/closing state and air conditioner operating state before breathing authentication, and the control module closes the vehicle windows and switches the vehicle to the ventilation circulation mode. It is controlled to, and after the start-up determination step, by a control module, switching the vehicle state according to the vehicle information before breathing authentication stored in the storage unit; may further include.

According to the drunk driving prevention system having a mask wearing mode and the drunk driving prevention method using the same of the present invention, it is determined whether a driver is wearing a mask based on a camera image provided in a vehicle, and different breathing is performed depending on whether the mask is worn or not. By applying the authentication and alcohol determination logic, it is effective to effectively utilize the drunk driving prevention system even when wearing a mask.

In addition, according to the present invention, since it is possible to authenticate breathing and determine whether or not to drink while the driver is wearing a mask, there is an effect that can greatly reduce the risk of disease transmission through the respiratory system inside the vehicle.

1 is a block diagram of a drunk driving prevention system having a mask wearing mode according to an embodiment of the present invention.
2 is an example of wearing/not wearing a mask for explaining a criterion for determining whether or not to wear a mask.
3 illustrates an example of variable application of a breathing volume required for authentication according to whether or not a mask is worn in a method for preventing drunk driving having a mask wearing mode according to an embodiment of the present invention.
4 shows guidelines for camera images provided for each mode.
5 is a flowchart illustrating a method for preventing drunk driving having a mask wearing mode according to an embodiment of the present invention.

Hereinafter, a drunk driving prevention system having a mask wearing mode according to various embodiments of the present invention and a drunk driving prevention method using the same will be described in detail with reference to the accompanying drawings.

1 is a block diagram of a drunk driving prevention system having a mask wearing mode according to an embodiment of the present invention.

As shown in FIG. 1, the drunk driving prevention system having a mask wearing mode according to a preferred embodiment of the present invention includes a camera 300 for capturing an image including a driver's face sitting in a driver's seat, and the driver's breath. Based on the image taken by the sensor module 100 and the camera 300 for detecting alcohol, it is determined whether the driver is wearing a mask, and the driver's drinking state is diagnosed from the alcohol concentration detected by the sensor module 100. and the control module 200 for operating the vehicle start limiting device 630.

The camera 300 may be installed near a driver's seat inside a vehicle, and is configured to photograph a driver seated in the driver's seat. The camera 300 may be configured to transmit captured image information to the control module 200 to process subsequent procedures such as driver authentication based on the driver's image captured by the control module 200 .

In addition, the system for preventing drunk driving according to a preferred embodiment of the present invention includes a storage unit 500 capable of storing various types of information such as image information photographed by the camera 300 and alcohol detection information detected by the sensor module 100. ) and a display unit 400 capable of displaying various information related to the breathing certification procedure to the driver.

According to a preferred embodiment of the present invention, the sensor module 100 includes a sensor unit 120 having a suction unit 110 for inhaling the driver's exhaled air and an alcohol detection sensor for detecting alcohol contained in the driver's exhaled air. can include

The intake unit 110 may be installed at a position where the driver's exhaled breath can be easily absorbed near the driver's seat, and may be preferably installed near the cluster, steering wheel, or center fascia.

In particular, a fan driven by a motor may be installed in the suction unit 110 of the sensor module 100, and the amount of air intake may be increased or decreased by controlling the number of revolutions of the fan. The fan is installed in the inlet of the suction part 110, and the motor for driving the fan may be operated by a control unit of the sensor module 100 itself or a sensor control unit 240 within the control module 200. .

In addition, the sensor unit 120 is configured to detect the alcohol component contained in the air sucked through the intake unit 110, and preferably detects the alcohol concentration in exhaled air exhaled toward the sensor module 100 by the driver. configured to be able to Information on the detected alcohol component, preferably, the alcohol concentration in the detected breath may be transmitted to the control module 200 side. Accordingly, in the control module 200, it is possible to compare the measured alcohol concentration information with a preset reference concentration to determine whether the driver is drunk and whether the driver is allowed to drive.

In addition, the control module 200 may be connected to other components in the system, such as the sensor module 100, the camera 300, the display unit 400, and the storage unit 500, by a communication interface, and transfer from these components It is configured to control the overall system according to the received information.

The control module 200 may include an authentication unit 210, a determination unit 220, an image processing unit 230, a sensor control unit 240, and a vehicle control unit 250. Each component included in the control module 200 is classified according to the function performed by the control module 200, and it does not mean that each component dividing the control module 200 is physically separated. .

The authentication unit 210 is a component that oversees the breathing authentication procedure, determines whether or not the driver is wearing a mask from the image captured by the camera 300, and respiration based on the driver's respiratory volume supplied to the sensor module 100. It can be configured to determine whether authentication has been completed. In addition, the determination unit 220 may compare the alcohol concentration detected by the sensor module 100 with a reference concentration to diagnose the driver's drinking state. The image processing unit 230 receives image information photographed by the camera 300 and processes it into image information necessary for the control module 200 . The sensor controller 240 may control the rotational speed of the fan of the sensor module 100, the sensitivity of the sensor module 100, and the like, and the vehicle controller 250 may control other in-vehicle devices 600 in the vehicle, For example, it may be configured to transmit a control command for a vehicle door, window 620, air conditioner 610, start limiter 630, and the like.

The control module 200 in a preferred embodiment of the present invention is a controller capable of performing various functions such as breathing authentication, alcohol determination, and vehicle control, and a processor performing calculations to perform these functions, and a processor It may be configured to include a memory in which an algorithm for performing a function is stored. In addition, the control module 200 may be provided by modularizing the authentication unit 210, the determination unit 220, the sensor control unit 240, and the vehicle control unit 250. In addition, the sub-components of the control module 200 as described above are just examples, and the control module 200 may be configured to perform the same or corresponding functions while communicating with other vehicle controllers. In this case, some sub-components may be excluded or replaced.

Looking at each component of the control module 200 shown in FIG. 1 , the authentication unit 210 is a component for performing a breathing authentication procedure for the driver to determine whether or not drunk driving.

Basically, the authentication unit 210 can check whether the driver is seated or not from information provided from a device such as a weight sensor of the driver's seat or a camera 300 that captures the driver's seat.

In addition, the authentication unit 210 may check whether or not the driver is currently wearing a mask based on image information captured by the camera 300 and whether or not a predetermined respiratory certification completion requirement is satisfied.

Here, breathing authentication means that a driver's breathing of an appropriate level is authenticated to determine whether or not he or she is intoxicated when the driver's breath is inhaled by the sensor module 100 . According to a preferred embodiment of the present invention, the suitability of the driver's breathing can be determined based on the respiratory volume, for example, the driver's respiratory volume inhaled through the suction unit 110 of the sensor module 100 exceeds the standard respiratory volume. case may be judged appropriate.

In particular, according to a preferred embodiment of the present invention, the authentication unit 210 can be configured to vary the breathing authentication completion requirement according to whether or not the driver is wearing a mask. In this way, the reason why the breath certification completion requirement is varied is that when the driver exhales at the same level as in a normal situation when wearing a mask, sufficient breath is not supplied to the sensor module 100, making it difficult to measure the alcohol concentration .

Accordingly, according to a preferred embodiment of the present invention, the authentication unit 210 controls the system to lower and reset the standard respiratory volume for completion of respiratory authentication, thereby detecting an effective alcohol concentration even when a relatively small respiratory volume is supplied to the sensor module 100. can make this possible.

Therefore, the authentication unit 210 can check whether the driver is wearing a mask based on the image taken by the camera 300 while the driver is sitting, and according to the check result, the sensor module 100 supplies The system may be controlled to vary the standard respiratory volume set for the driver's respiratory volume.

Regarding the function of the authentication unit 210, FIG. 2 illustrates wearing/unwearing a mask to explain a criterion for determining whether or not to wear a mask.

As shown in FIG. 2 , whether or not the mask is worn is determined based on the image of the camera 300 provided in the vehicle, and it can be determined whether the driver's mouth is covered by the mask. Therefore, as in (a) of FIG. 2, if the mouth is covered during breathing authentication, it is determined that the mask is worn, and as in (b), if the driver's mouth is not covered, it is determined that the mask is not worn. can

Meanwhile, the control module 200 includes an image processing unit 230 for processing an image captured by the camera 300, and processes image data captured by the image processing unit 230 to identify whether a mask is worn. It may also be configured to directly provide information capable of doing so to the authentication unit 210 . In this case, the authentication unit 210 determines whether to wear a mask according to the information provided by the image processing unit 230, and maintains or changes the standard respiratory volume based on the result.

FIG. 3 illustrates an example in which a breathing volume required for authentication is variably applied depending on whether or not a mask is worn in the method for preventing drunk driving having a mask wearing mode according to an embodiment of the present invention.

As described above, when the mask is worn, even if the driver breathes out at the same level, since the respiratory volume of the exhaled air sucked into the sensor module 100 is reduced, the set values of the sensor module 100 and the control module 200 If is kept the same, a problem may occur that the drunk driving prevention system does not recognize it as a normal driver's breathing.

Accordingly, in the present invention, when a mask is worn as shown in FIG. 3, the system is configured so that breathing certification can be performed smoothly by lowering and resetting the standard breathing volume required for breathing certification compared to when not wearing a mask.

Therefore, when a second reference respiratory volume having a relatively low value is set compared to the first reference respiratory volume when the mask is not worn, and it is confirmed that the driver is wearing a mask, breathing is authenticated based on the second reference respiratory volume. procedure will be carried out.

Therefore, in the general default mode, the control module 200 is set to complete respiration authentication only when the driver's respiratory volume equal to or greater than the preset first reference respiratory volume is supplied to the sensor module 100, while the driver wears a mask. In the wearing mode, the reference respiratory volume for completion of respiratory certification is reset by lowering it to the second reference respiratory volume.

At this time, the reason why the minimum respiratory volume for authentication is not set from the beginning is that when the standard respiratory volume is set to the minimum, such as the second standard respiratory volume, in the default mode, a third party riding the vehicle can easily perform proxy authentication, This is because when a passenger is intoxicated, an erroneous judgment result may appear that the passenger is judged to be drunk even with the amount of alcohol suspended in the air and a small amount of carbon dioxide.

On the other hand, in resetting the reference respiratory volume by lowering the control module 200, the lowered reference respiratory volume may be directly reset through the authentication unit 210 of the control module 200, unlike this, the sensitivity of the sensor module 100 It may be controlled to directly lower the reference respiratory volume associated with.

For example, when the reference respiratory volume is set downward through the authentication unit 210 of the control module 200, the sensitivity of the sensor module 100 is set low enough, the control module 200 from the sensor module 100 The authentication unit 210 may be configured to verify the data validity from the respiratory volume information and the alcohol detection value transmitted to. On the other hand, when the reference respiratory volume related to the sensitivity of the sensor module 100 is directly lowered, in the default mode, the sensor module 100 is set to detect alcohol only when the driver's breath equal to or greater than the first reference respiratory volume is inhaled, and the mask wearing mode In, the sensor module 100 can be controlled to detect the alcohol component in the sensor module 100 even when the second reference respiratory volume is inhaled or the respiratory volume less than the first reference respiratory volume is inhaled.

A drunk driving prevention system having a mask wearing mode according to a preferred embodiment of the present invention may include a display unit 400 for displaying various information within the system. The display unit 400 may be a display of a vehicle cluster, and may include a separate display or notification device.

The display unit 400 may be configured to transmit various types of information required to be notified to the driver during the operation of the drunk driving prevention system. In particular, when the drunk driving prevention system enters a mask wearing mode, it may be configured to display related information. can

In displaying whether to enter the mask wearing mode, the display unit 400 may directly display current mode (default mode or mask wearing mode) information or may display only guide information according to the mask wearing mode.

For example, when entering the mask wearing mode, the display unit 400 may output guidance information so that the driver is positioned close to the inlet side of the suction unit 110 of the sensor module 100 .

In this case, the display unit 400 may display on the screen a guide phrase to approach the inlet side of the suction unit 110 of the sensor module 100 together with image information about the position of the inlet of the suction unit 110.

In addition, in the present invention, when it is determined that the driver is wearing a mask, when entering the mask wearing mode, the driver's seating position can be guided so that the driver can effectively blow air toward the intake inlet of the sensor module 100. is configured so that

In this regard, FIG. 4 shows guide lines (dotted lines) for camera images provided for each of the default mode and the mask wearing mode.

As shown in (a) of FIG. 4 , in the default mode, a guide line (dotted line) of the upper body including the contour of the driver's face is provided in consideration of the general driver's seating position. That is, the camera 300 is configured to transmit captured image information to the image processing unit 230 of the control module in real time, the image processing unit generates a guideline for the driver's face position, and converts the image to include the guideline. will be processed The image information including the guideline is transmitted to the display unit 400, and the display unit 400 can output image information overlapping the guideline in real time.

On the other hand, in the mask wearing mode, the driver is configured to guide the sensor module 100 to be closer to the inlet side of the inlet in consideration of the reduced amount of breathing due to wearing the mask. To this end, in a preferred embodiment of the present invention, when entering the mask wearing mode, as shown in FIG. By providing this to the display unit 400, the driver can be guided to move his or her face to match the guide line. Preferably, the inlet of the camera and sensor module may be aligned, and the position of the enlarged guide line may be appropriately adjusted in consideration of the position of the camera and sensor module. The enlargement ratio and location of these guidelines may be pre-stored in a control module or a storage unit.

Therefore, the driver is induced to come as close as possible to the inlet side of the inlet of the sensor module, and through this, the problem of reducing the respiratory rate when wearing a mask can be improved.

According to another embodiment of the present invention, the sensor control unit 240 of the control module 200 so that a sufficient amount of driver's exhaled air can be inhaled into the sensor module 100 when entering the mask wearing mode. The sensor module 100 may be controlled to increase the rotational speed of the installed fan.

Through this process, when the driver's breathing is confirmed to be normal according to the criteria of each mode, the authentication unit 210 completes breathing authentication.

On the other hand, breathing authentication is completed by the authentication unit 210, and the sensor module 100 detects the alcohol component contained in the driver's breath. At this time, the information on the detected alcohol component is transferred to the control module 200, and preferably, the alcohol concentration detected by the sensor module 100 is compared with the reference concentration by the determination unit 220 of the control module 200. Thus, the driver's drinking state can be diagnosed.

As a result of the comparison, when it is determined that the driver is in a drinking state exceeding the reference concentration, the determination unit 220 determines that the driver is unable to drive due to drinking, and through the vehicle control unit 250 of the control module 200 The start limiting device 630 may be operated. In this regard, the start limiting device 630 refers to a device that controls the vehicle to be unable to drive by limiting the start of the vehicle, and may be, for example, a device that cuts off the starting power.

In addition, the control module 200 may include a storage unit 500, and in the storage unit 500, image information photographed by the camera 300 and alcohol detection information detected by the sensor module 100, etc. It is possible to store various types of information, and the stored information can be utilized to be provided to related organizations in the future.

In addition, the storage unit 500 may store vehicle information including a window opening/closing state and an air conditioner operating state before respiration authentication starts. In checking the driver's drinking state, in order to accurately measure the window 620, all windows 620 must be made in a closed betting circulation mode. When breathing authentication is initiated, the control module 200 closes the window 620 of the vehicle and can be controlled to switch to betting circulation mode. To this end, the vehicle control unit 250 of the control module 200 may be configured to transmit a control command for opening/closing the window 620 of the vehicle or controlling the inside/outside air circulation mode of the air conditioner 610. In addition, the vehicle control unit 250 may perform control to close the vehicle door in order to perform breathing authentication.

At this time, the pre-stored information before breathing authentication refers to information about the surrounding environment set by the driver before checking whether or not he or she has been drinking. Therefore, the control module 200 performs breathing authentication stored in the storage unit 500 after completion of the breathing authentication. The vehicle internal devices 600 may return to the driver's existing settings by controlling the vehicle state to be changed according to previous vehicle information. However, in the case of a vehicle door, since opening control is not possible, it is preferable that the state is not stored in the storage unit 500.

The drunk driving prevention system according to a preferred embodiment of the present invention may further include a biometric authentication unit 700 for authenticating a driver. The biometric authentication unit 700 is for verifying current driver information, and may be configured as a biometric authentication device capable of authenticating driver's fingerprint or iris information.

The storage unit 500 may store the biometric authentication information of a specific driver in advance, and the authentication unit 210 compares the stored biometric authentication information with the current driver's biometric authentication information authenticated through the biometric authentication unit 700 to determine the identity of the driver. It can also be configured to go through an authentication process.

Regarding this identity verification process, if a driver who has completed breathing certification and drinking status diagnosis reboards within a short time, certain requirements (for example, stopped for a short time or leaves the driver's seat) are met when the same driver reboards. If it is satisfied, it may be configured to start the vehicle without a breathing certification procedure.

Specific steps of the drunk driving prevention method using the drunk driving prevention system having a mask wearing mode having such a configuration are shown in FIG. 5 .

A method for preventing drunk driving with a mask wearing mode according to the present invention includes the steps of starting breathing authentication at the request of a driver, determining whether or not the driver is wearing a mask based on an image captured by a camera, and using a sensor module to measure a respiratory rate greater than or equal to a standard respiratory rate. If the breathing volume is inhaled, a drinking determination step of diagnosing the driver's drinking state by detecting alcohol from the driver's exhaled breath by the control module, and determining whether to start the vehicle based on the diagnosis result in the drinking determination step. steps may be included. In particular, in the drinking determination step, the control module may be controlled to variably set the reference respiratory rate of the sensor module according to whether or not the mask is worn.

As shown in FIG. 5, when the driver is on board (S501), the authentication unit starts breathing authentication (S502). At this time, the vehicle control unit of the control module may switch the air conditioner to the ventilation mode and control the windows (including the sunroof) to be closed (S503).

In a state in which the inside of the vehicle is sealed, the authentication unit may perform a step of confirming whether the driver is wearing a mask (S504). If it is confirmed through this step that the driver is not wearing a mask, breathing authentication is performed in a default mode. Therefore, when the driver's respiratory volume that is equal to or greater than the first reference respiratory volume preset by the sensor module is inhaled, respiratory authentication is completed, and alcohol detection and drinking state diagnosis are performed during the driver's exhalation (S506).

On the other hand, when it is determined through step S504 that the driver is wearing a mask, the default mode is switched to the mask wearing mode to perform breathing authentication.

Therefore, in this step, a step of switching to the mask wearing mode (S505) is performed, and this step of switching to the mask wearing mode (S505) includes a step of outputting a breathing authentication guide (S5051) and a rotation speed of the fan of the sensor module. It may include a step of controlling to increase (S5052), and a step of changing the standard respiratory volume required for respiratory certification to the second standard respiratory volume (S5053).

In this regard, the step of outputting the breathing certification guide (S5051) may be a step of outputting guide information for the driver to approach the inlet through the display unit. In addition, in the step of outputting the breathing authentication guide (S5051), the guideline of the real-time camera image output through the display unit may be enlarged and provided at a preset ratio.

4 illustrates that all of the steps S5051, S5052, and S5053 are included in the step of switching to the mask wearing mode, but this is just one embodiment of the present invention, and at least one of the steps S5051, S5052, and S5053 It is possible to configure the step (S505) of switching to the mask wearing mode to include.

However, in order to facilitate respiration certification, it is more preferable that the step of changing and controlling the standard respiration volume required for respiration certification (S5053) is essentially applied.

In addition, although each step of steps S5051, S5052, and S5053 is illustrated as sequentially performed in FIG. 4, this is only an example, and the order of steps S5051, S5052, and S5053 may be changed and implemented.

When the mode is switched to wearing a mask, when the driver's respiratory volume equal to or higher than the second reference respiratory volume preset by the sensor module is inhaled, respiratory authentication is completed, and the determination of the control module is performed based on the alcohol component of the driver's exhalation detected by the sensor module. Through this, the drinking state can be diagnosed (S506).

When diagnosing the drinking state, it is determined whether the alcohol concentration detected by the sensor module exceeds a preset reference concentration (S507), and when the vehicle cannot be driven due to the driver's drinking, the starting limiting device may be controlled to limit vehicle starting. (S508). In this step, when it is determined by the control module that the driver is in a drinking state exceeding a reference concentration, the driver is determined to be in a drinking state incapable of driving, and a control command for operating the starting limiting device may be transmitted by the control module.

On the other hand, if alcohol is not detected in the driver's breath or if the alcohol concentration detected by the sensor module is less than the reference concentration, the state in which the vehicle can be started is maintained (S509).

In addition, in a preferred embodiment of the present invention, the step of storing the image information captured by the camera and the alcohol detection information detected by the sensor module before starting the vehicle may be further included.

On the other hand, in the above step of starting the breath authentication (S502), the storage unit 500 may store vehicle information including a window opening/closing state and an air conditioner operating state before breathing authentication.

Therefore, by step S503, the vehicle state information before the control module closes the vehicle windows and switches the vehicle to the vehicle circulation mode is stored, and the stored information is usable after it is determined whether or not to start. In this case, after determining whether or not to start, that is, after the step in which the vehicle can be driven by completing the breathing authentication and the drinking diagnosis, switching the vehicle state according to the vehicle information stored in the storage unit before the breathing authentication is completed. (S510) may be implemented. However, this step S510 can be selectively performed, and there is no limitation in implementing the mask wearing mode even if it is excluded.

5 includes a control logic for re-boarding within a short time after the driver initially boards the vehicle. For example, when a driver who has completed breathing certification and drinking state diagnosis after getting into the driver's seat gets off for a while and then re-boards, it may be unnecessary to go through breathing certification again. Therefore, in one embodiment of the present invention, when the same driver reboards (S511), a step of determining whether breathing authentication is required again (S512) may be performed. Whether or not breathing authentication is required again may be determined by comparing information such as the time the vehicle is stopped or the time the driver leaves the driver's seat with a reference value, and when the reference value is exceeded, breathing certification is required again.

On the other hand, as a result of comparing the authentication information through the authentication unit or the biometric authentication unit, if it is determined that the driver is the same as in the previous authentication and the time requirements related to stopping time or time away from the driver's seat are met, the vehicle can be started immediately without a breathing authentication procedure. It can also be configured to be configurable.

Although shown and described in relation to specific embodiments of the present invention, it is known in the art that the present invention can be variously improved and changed without departing from the technical spirit of the present invention provided by the claims below. It will be self-evident to those skilled in the art.

100: sensor module
110: intake unit 120: sensor unit
200: control module 210: authentication unit
220: determination unit 230: image processing unit
240: sensor control unit 250: vehicle control unit
300: camera 400: display unit
500: storage unit 600: vehicle internal device
610: air conditioner 620: window
630: starting limiter
700: biometric authentication unit

Claims (16)

a camera that captures an image including a face of a driver seated in a driver's seat;
A sensor module for detecting alcohol contained in the driver's breath; and
A control module that determines whether the driver is wearing a mask based on the image captured by the camera, diagnoses the driver's drinking state from the alcohol concentration detected by the sensor module, and operates the vehicle start limiting device; and ,
The control module is configured to complete respiratory authentication only when a driver's respiratory volume equal to or greater than a preset first reference respiratory volume is supplied to the sensor module, and detect alcohol contained in the driver's exhalation by the sensor module,
When it is determined that the driver is wearing a mask, the control module lowers the reference respiratory volume for completing the respiratory certification to a second reference respiratory volume and resets the drunk driving prevention system having a mask wearing mode.
The method of claim 1,
The drunk driving prevention system having a mask wearing mode, characterized in that it further comprises a storage unit for storing the image information photographed by the camera and the alcohol detection information detected by the sensor module.
The method of claim 1,
The sensor module,
a suction unit for inhaling the driver's exhaled air;
A drunk driving prevention system having a mask wearing mode comprising a; sensor unit having an alcohol detection sensor for detecting alcohol contained in the driver's exhalation.
The method of claim 1,
The control module,
an authentication unit that determines whether or not the driver is wearing a mask from the image captured by the camera, and determines whether or not breathing authentication is completed based on the driver's breathing volume supplied to the sensor module;
a determination unit for diagnosing a driver's drinking state by comparing the alcohol concentration detected by the sensor module with a reference concentration;
When it is determined by the determination unit that the driver is in a drinking state exceeding the reference concentration, a vehicle control unit that transmits a control command for operating the starting limiting device; drinking with a mask wearing mode comprising: anti-driving system.
The method of claim 1,
A display unit for displaying guide information according to entering the mask wearing mode to the driver; further comprising,
The display unit outputs guidance information so that the driver is located close to the inlet side of the inlet of the sensor module when entering the mask wearing mode.
The method of claim 5,
The camera is configured to transmit captured image information to the image processing unit of the control module in real time,
The image processing unit is configured to generate a guide line for a driver's face position and transmit image information overlapped with the guide line to the display unit,
The display unit is configured to output image information in which the guide line overlaps in real time,
When entering the mask wearing mode, the image processing unit enlarges the size of the guide line at a preset ratio and provides it.
The method of claim 5,
The control module controls the sensor module to increase the rotational speed of the fan installed on the inlet side of the inlet when entering the mask wearing mode.
The method of claim 2,
The storage unit stores vehicle information including a window opening and closing state and an air conditioner operating state before the start of breathing authentication,
The control module controls to close the windows of the vehicle and switch the vehicle to a circulation mode when breathing authentication is initiated,
After the breath authentication is completed, the control module controls to switch the vehicle state according to the vehicle information before the breath authentication stored in the storage unit.
Initiating respiration authentication at the driver's request;
Determining whether a driver is wearing a mask based on an image captured by a camera;
A drinking determination step of diagnosing a driver's drinking state by detecting alcohol from the driver's exhaled breath when a respiratory volume equal to or greater than a standard respiratory volume is inhaled by the sensor module; and
A start-up determining step of determining whether or not to limit vehicle start-up according to the diagnosis result in the drinking determination step; includes,
In the drinking determination step, the control module variably sets the reference respiratory rate of the sensor module according to whether or not the mask is worn.
The method of claim 9,
In the drinking judgment step,
When it is determined that the mask is not worn, the process of detecting alcohol during exhalation and diagnosing the drinking state is performed only when the driver's respiratory volume equal to or higher than the first reference respiratory volume preset by the sensor module is inhaled,
When it is determined that the mask is worn, the sensor module is configured to detect alcohol during exhalation and perform a drinking state diagnosis process only when the driver's respiratory rate equal to or higher than the second reference respiratory rate preset by the sensor module is inhaled,
The first reference respiratory volume is set to a larger value than the second reference respiratory volume Drunk driving prevention method with a mask wearing mode.
The method of claim 9,
The method of preventing drunk driving with a mask wearing mode, further comprising storing the image information captured by the camera and the alcohol detection information detected by the sensor module in a storage unit before starting the vehicle.
The method of claim 9,
In the drinking judgment step,
When it is determined by the control module that the driver is in a drinking state exceeding the reference concentration, it is determined that the driver is in a drinking state incapable of driving;
In the step of determining whether or not to limit the starting,
A method for preventing drunk driving with a mask wearing mode, characterized in that for sending a control command for operating the starting limiting device by the control module.
The method of claim 9,
In the drinking judgment step,
Including a breathing certification guide display step of displaying guidance information according to whether or not a mask is worn to the driver through the display unit,
In the step of displaying the breathing authentication guide,
When entering the mask wearing mode, the display unit outputs guide information so that the driver is located close to the inlet side of the inlet of the sensor module.
The method of claim 13,
In the drinking judgment step,
The image information photographed by the camera is transmitted in real time to the image processing unit of the control module,
The image processing unit is configured to generate and transmit image information in which a guide line of a driver's face position overlaps to the display unit, and output the image information in which the guide line overlaps in real time through the display unit,
In the step of displaying the breathing authentication guide,
A method for preventing drunk driving with a mask wearing mode, characterized in that the size of the guide line is enlarged at a preset ratio and provided through the display unit together with or after the output of the guide information.
The method of claim 13,
In the drinking judgment step,
Further comprising the step of controlling, by the control module, to increase the rotational speed of the fan installed on the inlet side of the suction port together with or after the output of the guide information. How to avoid driving.
The method of claim 9,
In the step of starting the breath authentication,
The storage unit stores vehicle information including a window opening/closing state and an air conditioner operating state before breathing authentication, and is controlled by the control module to close the vehicle windows and switch the vehicle to a ventilation circulation mode,
After the step of determining whether to start,
Switching, by the control module, the vehicle state according to the vehicle information before breathing authentication stored in the storage unit; Drunk driving prevention method having a mask wearing mode, characterized in that it further comprises.

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