JP2020052482A - Dangerous driving prevention device - Google Patents

Abstract

To provide a dangerous driving prevention device capable of giving an optimum awakening effect suitable for each driver.SOLUTION: A drowsy driving prevention device 100 includes: a driver state detection section 1 for detecting a state of a driver of a vehicle; a drowsy level detection section 21 for detecting a drowsy level of a driver on the basis of a state of the driver detected by the driver state detection section 1; an awakening means setting section 4 for setting predetermined awakening means from multiple elements of awakening means with respect to each one of drowsy levels in multiple stages; an awakening means selection section 22 for selecting the awakening means set by the awakening means setting section 4 in accordance with the drowsy level detected by the drowsy level detection section 21; and an awakening performance section 3 for performing a predetermined awakening behavior with respect to a driver by the awakening means selected by the awakening means selection section 22.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a device for preventing a driver of a vehicle from driving dangerously, such as drowsy driving or inattentive driving, and more particularly to a device for promoting awakening of a driver in an abnormal state.

  2. Description of the Related Art A driver monitor mounted on a vehicle is known as a means for monitoring the state of a driver to ensure traveling safety. The driver monitor captures the driver's face with a camera installed at a position facing the driver and analyzes the obtained facial image to determine whether the driver has fallen asleep, looking aside, or has sudden illness. It is a device to monitor.

  When the driver monitor detects the driver's dozing state, it is conventionally performed to output an alarm in order to awaken the driver, but only by outputting an alarm to the driver who has entered the dozing state, There is no guarantee that the driver can be awakened reliably. Therefore, as shown in Patent Documents 1 to 5, for example, various means for effectively awakening a driver who has drowsiness (or has a sign of drowsiness) have been proposed.

  In Patent Literature 1, a user interface including a plurality of piezoelectric elements is provided on a steering wheel of a vehicle, and a sound is output when a voltage is generated by a driver hitting the piezoelectric elements. Then, when the driver feels drowsy, the driver outputs music and urges the driver to perform a tapping operation of the piezoelectric element in accordance with the music, thereby performing awakening support by a unique perception accompanying the movement of the finger.

  In Patent Literature 2, a dialogue system is provided to perform a dialogue with the driver by uttering voice to the driver, and by performing a dialogue based on a database ideal for maintaining the driver's awakening, the driver can be identified. I try to wake up effectively. Further, by learning the utterance transition mode that is effective for maintaining alertness, it is possible to maintain alertness according to the characteristics of the driver.

  In Patent Document 3, a pupil diameter of a driver in an initial state is calculated from a captured image of a camera. Then, it is monitored whether the pupil diameter tends to gradually decrease within a predetermined period thereafter, and if the pupil diameter tends to decrease gradually, it is determined that the driver is in a drowsiness sign state, and the driver is in a drowsiness state. Before entering, an alarm is output in the form of, for example, voice guidance for prompting an alert.

  In Patent Document 4, the drowsiness level of the driver in the future (after a certain time) is predicted based on the heart rate and the number of blinks, and the prediction result is presented to the driver, so that the drowsiness level becomes higher than the threshold. Before measures are required, the driver can check the drowsiness level in the future and take necessary measures ahead of schedule.

  In Patent Literature 5, when it is detected that the traveling speed of the vehicle is equal to or higher than a preset threshold, a scent having an awakening effect is emitted from the fragrance into the vehicle interior, and a high-speed drowsiness is caused. The driver is awakened when driving.

JP 2011-186622 A JP 2018-31918 A JP 2009-78006 A JP 2010-140358 A JP-A-8-2284

  In Patent Documents 1 to 5 described above, the means for awakening the driver is a common and uniform means for all drivers, and takes into account the characteristics and circumstances of each driver. It is not. For this reason, each awakening means proposed in each document is effective for a certain driver, but is not always effective for another driver. It cannot be the one that gives the awakening effect.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a dangerous driving prevention device that can provide an optimal awakening effect suitable for an individual driver.

  A dangerous driving prevention apparatus according to the present invention includes a driver state detecting unit that detects a state of a driver of a vehicle, and an awakening level of the driver based on the driver state detected by the driver state detecting unit. Awakening level detecting unit for detecting the awakening means, an awakening means selecting unit for selecting an awakening means for awakening the driver according to the awakening level detected by the awakening level detecting unit, and an awakening means selecting unit selected by the awakening means selecting unit. A wake-up execution unit that executes a predetermined wake-up action to the driver by the wake-up means. The awakening means selection unit selects an awakening means set by the driver by himself / herself or an optimal awakening means estimated from the characteristics of the driver.

  According to such a dangerous driving prevention device, the driver can arbitrarily set the awakening means suitable for the driver, or can automatically set the optimum awakening means according to the characteristics of the driver. . For this reason, it is possible to customize the setting of the awakening means for each individual driver and execute the optimal awakening action for the driver, so that the driver can be awakened by a uniform awakening action. Therefore, the driver can be awakened more effectively.

  In the present invention, whether the driver sets the awakening means by himself or automatically selected by the awakening means selecting unit may be specified by a predetermined operation of the driver.

  In the present invention, an awakening means setting section for setting a desired awakening means by the driver is provided, and the awakening means setting section may be capable of setting a plurality of awakening means for one awakening level. . In this case, it is preferable that the awakening means selecting unit randomly selects any one of the awakening means from the plurality of awakening means.

  In the present invention, the awakening means selecting unit acquires preference information indicating the driver's preference as information relating to the characteristics of the driver, and optimizes the awakening means that matches the driver's preference based on the acquired preference information. May be selected as the awakening means.

  For example, the awakening means selecting unit acquires the driver's preference information based on the driver's search history, browsing history, viewing history, purchase history, or information transmitted by the driver on the network, and acquires the acquired preference information. , The content that matches the driver's preference is further acquired, and the content is selected as the optimal awakening means. Then, the awakening execution unit executes the awakening action by playing back the content.

  In the present invention, the awakening means selecting unit learns the causal relationship between the awakening means and the arousal effect based on the arousal level re-detected by the awakening level detecting unit after the awakening action is executed, and among the plurality of awakening means. Therefore, the awakening means having the greatest awakening effect may be preferentially selected.

  In the present invention, after the wake-up action is performed, an evaluation input unit is provided for the driver to input an evaluation on the wake-up effect of the wake-up unit, and the wake-up unit selection unit is based on the evaluation input by the evaluation input unit. Alternatively, a wake-up unit having the largest wake-up effect may be preferentially selected from a plurality of wake-up units.

  In the present invention, when the awakening level detected by the awakening level detection unit is a predetermined level, the awakening execution unit communicates with a call destination set in advance and is performed between the callee and the driver. The driver may be awakened by conversation.

  In the present invention, when an awakening action is performed by the awakening execution unit, an out-of-vehicle notifying unit that notifies danger information relating to the awakening state of the driver to the outside of the vehicle may be provided.

  In the present invention, the awakening means is a physical stimulus to the driver, and may include all or a part of sound, conversation, light, vibration, shock, pressure, scent, wind, temperature, and humidity.

  The present invention can also be applied to dangerous driving (for example, inattentive driving) where the arousal level is not related. The dangerous driving prevention device in this case includes a driver state detecting unit that detects the state of the driver of the vehicle, and awakens the driver when the driver state detected by the driver state detecting unit is abnormal. An awakening means selection unit for selecting an awakening means for causing the vehicle to wake up, and an awakening execution unit for executing a predetermined awakening action on the driver by the awakening means selected by the awakening means selection unit. The wake-up means selection unit selects the wake-up means set by the driver or the optimum wake-up means estimated from the characteristics of the driver in the same manner as described above.

  In the present invention, the abnormal state of the driver may include at least one of a drowsy state, a drunk state, a sudden disease state, and an inattentive state.

  ADVANTAGE OF THE INVENTION According to this invention, the dangerous driving | operation prevention apparatus which can give the optimal awakening effect suitable for each driver can be provided.

It is a block diagram of a dozing driving prevention device concerning a 1st embodiment. It is a schematic diagram of a driver's seat of a vehicle. FIG. 3 is a front view showing a positional relationship between a steering wheel and a camera. It is a table showing a setting example of awakening means. It is a flow chart which showed operation of a dozing driving prevention device concerning a 1st embodiment. It is a flow chart which showed operation of a dozing driving prevention device concerning a 2nd embodiment. It is a block diagram of a dozing driving prevention device concerning a 3rd embodiment. It is a block diagram of a dozing driving prevention device concerning a 4th embodiment. It is a block diagram of a dozing driving prevention device concerning a 5th embodiment. It is the flowchart which showed operation | movement of the dozing driving | operation prevention apparatus which concerns on 6th Embodiment. It is the flowchart which showed operation | movement of the dozing driving | operation prevention apparatus which concerns on 7th Embodiment. It is a block diagram of a dozing driving prevention device concerning an 8th embodiment. It is a block diagram of a dozing driving prevention device concerning a 9th embodiment. It is a block diagram of a dozing driving prevention device concerning a 10th embodiment. It is a flow chart which showed operation of a dozing driving prevention device concerning a 10th embodiment. It is a block diagram of a dangerous driving prevention device concerning an 11th embodiment. It is the flowchart which showed operation | movement of the dangerous driving | operation prevention apparatus which concerns on 11th Embodiment.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the drawings, the same or corresponding parts are denoted by the same reference numerals. Hereinafter, a case in which the present invention is applied to prevention of dozing driving which is one of dangerous driving will be described as an example.

  First, a configuration of a dozing driving prevention device according to a first embodiment of the present invention will be described with reference to FIG. The drowsy driving prevention device 100 is mounted on a vehicle, and includes a driver state detection unit 1 that detects a state of a driver of the vehicle, a control unit 2 that performs control for preventing a drowsy driving, The vehicle includes a wake-up execution unit 3 that executes a wake-up action for a driver based on a command, and a wake-up unit setting unit 4 that sets wake-up means (sound, light, vibration, and the like) that wake up the driver. The drowsy driving prevention device 100 is an example of the “dangerous driving prevention device” of the present invention.

  The driver state detection unit 1 includes a camera 11 and an image processing unit 12. The camera 11 has an image sensor for photographing the driver and a light emitting device for irradiating light to the driver's face (both not shown). The image processing unit 12 detects the driver's face from the image captured by the camera 11 and extracts feature points such as eyes on the face. The information on the face and the feature points indicates the state of the driver.

  As shown in FIG. 2, the camera 11 is provided on an instrument panel 51 at the driver's seat of the vehicle 50. Specifically, the camera 11 is installed at a position facing the driver DR with the steering wheel 52 interposed therebetween, and photographs the face of the driver DR sitting on the seat 53. The dotted line indicates the shooting range of the camera 11. As shown in FIG. 3, the camera 11 can photograph the face of the driver DR through the opening 52a of the steering wheel 52. The vehicle 50 is, for example, an automobile.

  Returning to FIG. 1, the control unit 2 includes a CPU, a memory, and the like, and includes a drowsiness level detection unit 21, an awakening unit selection unit 22, and an awakening unit storage unit 23. The drowsiness level detection unit 21 detects the drowsiness level of the driver DR based on the state of the driver DR detected by the driver state detection unit 1.

  In the present embodiment, the drowsiness level detection unit 21 detects the drowsiness level of the driver DR using VOR (Vestibulo-ocular reflex). The VOR is a fine movement of the eyeball (reflection movement) for correcting the blur of the field of view caused by the movement of the head, and the VOR is reduced several minutes before the driver DR feels sleepy (that is, the VOR is reduced). It is known that the reflex movement of the eyeball becomes dull.) Therefore, by analyzing the image acquired from the driver state detection unit 1 and measuring the VOR, it is possible to detect the drowsiness level of the driver DR. The use of the VOR makes it possible to detect a sign of dozing before the driver DR actually feels drowsy. The drowsiness level is an example of the “awakening level” in the present invention, and the higher the drowsiness level, the lower the arousal level. The drowsiness level detection unit 21 is an example of the “awakening level detection unit” of the present invention.

  The awakening means selecting unit 22 selects a predetermined awakening means from the plurality of awakening means set by the awakening means setting unit 4 according to the drowsiness level detected by the drowsiness level detecting unit 21. Each function of the drowsiness level detection unit 21 and the awakening means selection unit 22 is realized by software processing of the CPU. The awakening means storage unit 23 is composed of a flash memory or the like, and stores the awakening means set by the awakening means setting unit 4. The awakening means storage unit 23 may be incorporated in the awakening means setting unit 4 or the awakening means selecting unit 22.

  The awakening means setting unit 4 sets a predetermined awakening means from among the plurality of awakening means for each of a plurality of drowsiness levels. As the awakening means setting unit 4, for example, a multi-information display (MID) provided in a driver's seat can be used. By performing a predetermined operation on the menu of the awakening means displayed on the MID, the driver DR can select the awakening means suitable for the driver and set the awakening means. As the awakening means setting unit 4, a mobile terminal 200 (for example, a smartphone) owned by the driver DR can be used in addition to the MID.

  The driver state detection unit 1 and the control unit 2 constitute a driver monitor that monitors the driver DR. Therefore, in addition to the snooze-related blocks 21 to 23 illustrated in FIG. 1, the control unit 2 includes a block that detects a driver's inattentiveness, sudden illness, and the like, but these are not illustrated.

  The awakening execution unit 3 includes an audio device 31, an air conditioner 32, a light emitting unit 33, a vibration device 34, an impact device 35, a seat belt adjustment unit 36, a fragrance generation unit 37, and a communication unit 38. In the present embodiment, sound, conversation, light, vibration, impact, pressure, scent, and wind are used as awakening means for awakening the driver DR.

  The audio device 31 is originally provided in the vehicle, and wakes up the driver DR by sound (music, voice, or the like). The air conditioner 32 is also originally provided in the vehicle, and wakes up the driver DR by the wind. The light emitting unit 33 is composed of, for example, a flash device that emits flash light, and wakes the driver DR by light. The aforementioned light emitting element for illuminating the face provided in the camera 11 may be used as the light emitting unit 33. In addition, light can be emitted using the portable terminal device 200 owned by the driver DR.

  The vibration device 34 wakes up the driver DR by, for example, using a motor as a drive source and vibrating a steering wheel 52 and a seat 53 (see FIG. 2) in a driver's seat. The impact device 35 wakes up the driver DR by applying an impact to the driver seat 53 or the like, for example, using a solenoid as a drive source. The seat belt adjusting unit 36 uses, for example, a motor as a drive source, and wakes up the driver DR by pressure due to the binding of the seat belt. The fragrance generating section 37 includes, for example, a container containing a fragrance and a divergent device for radiating the fragrance, and awakens the driver DR with the fragrance.

  The communication unit 38 is originally provided in the vehicle, communicates with the mobile terminal 200, automatically connects the mobile terminal 200 to a predetermined destination, and performs a conversation performed via the mobile terminal 200. Awakens the driver. In this case, a plurality of destinations may be registered, and a connection may be made to a predetermined destination in accordance with the priority order specified by the driver DR or randomly. The communication section 38 also communicates with an ECU (electronic control unit) (not shown) mounted on the vehicle.

  The communication unit 38 is connected to the Internet 5, and can acquire music content and the like stored in the server 6 via the Internet 5. The acquired music content is reproduced by the audio device 31 and output as voice or music.

  The portable terminal 200 is connected to the Internet 5 and to the telephone line 7. In the mobile terminal 200, the telephone number of the called party 8 with which the conversation for awakening the driver DR is performed is set in advance. For this reason, the portable terminal device 200 can automatically make a call to the communication destination 8 via the telephone line 7 based on the call command signal transmitted from the communication unit 38.

  FIG. 4 shows an example of the wake-up means setting table TB stored in the wake-up means storage unit 23. Here, the drowsiness level detected by the drowsiness level detection unit 21 based on the VOR is divided into three levels of level 1 to level 3. Level 1 is a drowsiness predictive state before the driver DR actually feels drowsy, Level 2 is a state where the driver DR is actually drowsy, and Level 3 is a state where the driver DR falls asleep. Represents. As the level increases from 1 to 2 to 3, the awakening level of the driver DR decreases.

  Then, a predetermined awakening means (black mark) designated from among a plurality of awakening means is set for each level. For example, for level 1, music / voice / fragrance is set as awakening means, for level 2 conversation / light emission / wind is set as awakening means, and for level 3, high volume / vibration / shock / seat belt Bondage is set as a means of awakening. These awakening means are physical stimuli to the driver DR. As can be seen from FIG. 4, the awakening means set differs between the levels.

  The awakening means selecting unit 22 refers to the awakening means setting table TB, selects an awakening means corresponding to the drowsiness level detected by the drowsiness level detecting unit 21, and the awakening execution unit 3 corresponds to the selected awakening means. Blocks 31 to 38 perform a predetermined awakening action for the driver DR (details will be described later).

  Next, the operation of the dozing driving prevention device 100 will be described in more detail with reference to the flowchart of FIG. The procedure of this flowchart is started when the ignition switch of the vehicle is turned on, and ends when the ignition switch is turned off.

  In FIG. 5, in step S1, the driver DR is photographed by the camera 11, and the photographed image is processed by the image processing unit 12 to generate a face image of the driver DR. In step S2, the drowsiness level detection unit 21 analyzes the face image and detects the drowsiness level of the driver DR. Specifically, the drowsiness level detection unit 21 measures the aforementioned VOR (vestibular oculomotor reflex) by analyzing the movement of the eyeball in the face image acquired from the image processing unit 12, and determines the drowsiness level based on the measurement result. To detect. The smaller the VOR, the higher the drowsiness level, and the larger the VOR, the lower the drowsiness level. To detect the drowsiness level, a technique such as deep learning (Deep Learning) can be used.

  In step S3, the drowsiness level detection unit 21 determines whether or not the drowsiness level LV detected in step S2 exceeds a preset threshold K. If the result of the determination is that the drowsiness level LV does not exceed the threshold value K (step S3: NO), the process returns to step S1 and repeats steps S1 to S3. On the other hand, when the drowsiness level LV exceeds the threshold K (step S3: YES), the process proceeds to step S4, and the drowsiness level detection unit 21 classifies the drowsiness level LV.

  In step S4, the drowsiness level LV is divided into three levels of level 1 to level 3, corresponding to FIG. Three reference values α, β, and γ (α> β> γ) are predetermined for this classification. Among them, there is a relationship of γ> level 1> K, β> level 2 ≧ γ> K, α> level 3 ≧ β> K.

  If the drowsiness level LV is level 1 (LV = 1) in step S4, the driver DR is in a drowsiness sign state as described above. In this case, the awakening means selecting unit 22 selects the awakening means corresponding to level 1 in step S5. Specifically, the awakening means selection unit 22 randomly selects any one of the music, voice, and fragrance set as the level-1 awakening means in the awakening means setting table TB of FIG. Then, a signal indicating the selected awakening means is output to the awakening execution unit 3.

  In step S6, the awakening execution unit 3 executes the awakening action by the awakening means selected in step S5. More specifically, when the awakening means is music, the audio device 31 is driven to play music stored on a recording medium set in the device, or music obtained from the server 6 via the Internet 5. Or play content. When the awakening means is voice, the audio device 31 is also driven to play, for example, a radio program or play rakugo stored in a recording medium. If the awakening means is fragrance, the fragrance generator 37 is driven to emit fragrance into the vehicle interior. Since the level 1 is a drowsiness predictive state, the driver DR can be awakened by such a sound or scent before the driver DR feels drowsy, and the drowsy driving can be prevented beforehand. .

  Here, only one of the plurality of awakening means is selected, but two or more may be selected. In this case, a plurality of awakening actions (for example, music reproduction and fragrance emission) corresponding to a plurality of awakening means are executed by the awakening execution unit 3 in parallel. The same applies to the selection of the awakening means in level 2 and level 3 described later.

  On the other hand, if the drowsiness level LV is level 2 in step S4 (LV = 2), the driver DR is in a state of actually feeling drowsy as described above. In this case, the awakening means selecting unit 22 selects the awakening means corresponding to level 2 in step S7. Specifically, the awakening means selecting unit 22 randomly selects any one of the conversation, light emission, and wind set as the waking means of level 2 in the awakening means setting table TB of FIG. Then, a signal indicating the selected awakening means is output to the awakening execution unit 3.

  In step S8, the awakening execution unit 3 executes an awakening action by the awakening means selected in step S7. Specifically, when the awakening unit is a conversation, the communication unit 38 transmits a call command signal to the portable terminal 200. When receiving the call command signal, the portable terminal device 200 automatically makes a call via the telephone line 7 to the called party 8 whose telephone number has been set in advance. Then, when the portable terminal 200 is connected to the call destination 8, the driver DR can have a conversation with the other party of the call destination 8 (for example, a family or a friend). Alternatively, when a call is made from the portable terminal 200, the state of the driver DR (sleepiness detection state) is transmitted to the called party 8 by a preset voice message, and the call is sent from the called party 8 to the portable terminal 200 of the driver DR. Electricity (callback) may be performed. Communication with the called party 8 may be performed using a mobile communication system capable of two-way communication, such as telematics, in addition to the mobile terminal 200.

  When the awakening unit emits light, the light emitting unit 33 is driven to generate a flash toward the driver DR. When the awakening means is wind, the air conditioner 32 is driven to blow a strong wind toward the driver DR. Level 2 is a drowsiness detection state, so that the driver DR who has started to feel drowsy can be effectively awakened by such conversation, flash or strong wind, and drowsy driving can be prevented beforehand. .

  If the drowsiness level LV is level 3 in step S4 (LV = 3), the driver DR has fallen asleep as described above. In this case, the awakening means selecting unit 22 selects the awakening means corresponding to level 3 in step S9. Specifically, the awakening means selecting section 22 selects one of the loudness, vibration, impact, and seat belt binding set as the level-3 awakening means in the awakening means setting table TB of FIG. Is randomly selected, and a signal indicating the selected awakening means is output to the awakening execution unit 3.

  In step S10, the awakening execution unit 3 executes an awakening action by the awakening means selected in step S9. Specifically, when the awakening means has a large volume, a loud sound is output from the speaker of the audio device 31. When the awakening means is vibrating, the vibration device 34 is driven to vibrate the steering wheel 52, the driver seat 53, and the like. When the awakening means is an impact, the impact device 35 is driven to apply an impact to the driver seat 53 or the like. When the awakening means is a seat belt tightening, the seat belt adjusting unit 36 is driven to increase the seat belt tightening force (tension). Since the level 3 is a dozing state, the driver DR who has fallen asleep can be effectively awakened by such a large volume, vibration / shock, and pressure, and can be returned to the normal driving.

  After executing steps S6, S8, and S10, the process proceeds to step S11. In step S11, the drowsiness level detection unit 21 determines whether or not the driver DR has awakened by performing the awakening action. Specifically, after a predetermined awakening action is performed on the driver DR, the drowsiness level detection unit 21 re-detects the drowsiness level LV of the driver DR. If the re-detected drowsiness level LV exceeds the threshold value in step S3, it is determined that the driver DR is not awake (step S11: NO). In this case, the process proceeds to step S12, and the awakening action by the awakening execution unit 3 is continued.

  On the other hand, if the re-detected drowsiness level LV is equal to or less than the threshold value in step S3, it is determined that the driver DR has awakened (step S11: YES), and the process returns to the beginning and returns to the driver DR in steps S1 to S3. The sleepiness level LV of the child is monitored. Then, when the drowsiness level LV exceeds the threshold value K again in step S3, an action for awakening the driver DR is executed in steps S4 to S12.

  According to the above-described first embodiment, the driver DR can arbitrarily set the awakening means suitable for the driver DR from the plurality of awakening means by the awakening means setting unit 4. For this reason, it is possible to customize the setting of the awakening means for each individual driver DR and execute the optimal awakening action for the driver DR. , The driver DR can be awakened more effectively.

  Further, since the set awakening means differs between the respective sleepiness levels (LV = 1, 2, 3) (FIG. 4), it is possible to execute the waking action by the optimum awakening means corresponding to the sleepiness level LV. It is possible to awaken the driver DR accurately.

  Furthermore, since the awakening means selecting unit 22 randomly selects any one of the awakening means from the plurality of awakening means, even if the sleepiness level is the same, the awakening action that is unpredictable for the driver DR is always performed. Will be executed. For this reason, freshness to the driver DR is not lost, and the awakening effect can be enhanced.

  Next, a second embodiment of the present invention will be described. The configuration of the dozing driving prevention device 100 according to the second embodiment is the same as that of FIG. FIG. 6 is a flowchart illustrating the operation of the driving prevention device 100 according to the second embodiment, and the steps that perform the same processing as in FIG. 5 are denoted by the same reference numerals.

  In the flowchart of FIG. 6, step S13 is added to the flowchart of FIG. 5. If the driver DR wakes up in step S11 (step S11: YES), the process proceeds to step S13. In step S13, the awakening means selecting unit 22 learns the causal relationship between the awakening means and the awakening effect (effectiveness of awakening) based on the sleepiness level LV re-detected by the sleepiness level detecting unit 21 in step S11.

  For example, when music is selected as the awakening means in step S6, the drowsiness level LV re-detected in step S11 decreases to 50% of the threshold K, whereas when aroma is selected as the awakening means, Assuming that the level LV has decreased only to 70% of the threshold value K, music has a greater arousal effect than aroma. Further, if the drowsiness level LV is reduced to 30% of the threshold value K when voice is selected as the awakening means, voice has a greater awakening effect than music.

  Therefore, the awakening means selecting unit 22 ranks voice> music> fragrance and records the result. This is repeated each time the awakening action is executed, and the ranking of the awakening means is updated. Then, in the next step S5, the waking means having the highest rank, that is, the waking means having the largest waking effect is preferentially selected. Similar processing is performed in the selection of the awakening means in steps S7 and S9. Note that, even in the same music category, one of the music A and the music B or the singer A and the singer B that has the greater arousal effect may be preferentially selected. Alternatively, recommended songs or singers that the driver DR does not know may be obtained from the Internet 5 and a fresh awakening effect may be given to the driver DR by performing the performance.

  According to the above-described second embodiment, since the awakening means with a remarkable awakening effect is preferentially selected, the driver DR can be awakened more effectively.

  FIG. 7 shows a dozing driving prevention device 100 according to a third embodiment of the present invention. It is to be noted that components other than the drowsy driving prevention device (the portable terminal 200, the Internet 5, etc. in FIG. 1) are not shown. In FIG. 7, an outside notification unit 40 is added to the configuration of FIG. The outside notification unit 40 includes a horn 41 and a lamp 42. These are originally provided in the vehicle. In this example, the lamp 42 is a hazard lamp that blinks in an emergency, but a headlight, a room light, or the like may be included in the lamp 42. In FIG. 7, the operation of each unit other than the outside notification unit 40 is the same as that in FIG.

  When the drowsiness level detection unit 21 detects a drowsiness level LV exceeding the threshold K and the awakening execution unit 3 executes a predetermined awakening action, the outside notification unit 40 sends danger information relating to the driver DR's dozing outside the vehicle. Notify. Specifically, the outside notification unit 40 determines that the driver DR is in a drowsiness sign state (LV = 1), a drowsiness detection state (LV = 2), or a dozing state (LV = 3) according to the drowsiness level LV of the driver DR. Is notified to the traveling vehicle or pedestrian outside the vehicle by the sound of the horn 41 or the blinking of the hazard lamp 42. For example, when LV = 1 and LV = 2, the notification is performed only by the hazard lamp 42, and when LV = 3, the notification is performed by both the horn 41 and the hazard lamp 42. The notification may not be performed when LV = 1, and may be performed when LV = 2 or more.

  According to the above-described third embodiment, when the driver DR enters a state of drowsiness sign, drowsiness detection, or falling asleep, the outside notification unit 40 notifies the occupant or the pedestrian of another vehicle. The receiving side senses the danger and takes appropriate measures to prevent the occurrence of an accident.

  FIG. 8 shows a dozing driving prevention device 100 according to a fourth embodiment of the present invention. 8, the audio device 31 is omitted from the wake-up execution unit 3 of FIG. 1, while the portable terminal 200 is included in the wake-up execution unit 3. In the present embodiment, awakening music, voice, and the like are output from the portable terminal 200 instead of the audio device 31. Other points are the same as those in FIG. 1, and the description is omitted.

  According to the above-described fourth embodiment, the driver DR can be awakened using the portable terminal device 200 such as a smartphone owned by the driver DR.

  FIG. 9 shows a dozing driving prevention device 100 according to a fifth embodiment of the present invention. In FIG. 9, a biometric information acquisition unit 13 that acquires biometric information from the driver DR is added to the driver status detection unit 1 of FIG. The biological information includes brain waves, blood pressure, heart rate, and the like. For example, there is a difference in the tendency of the electroencephalogram between the time when the driver DR is awake and the time when he falls asleep, so that in addition to the analysis of the face image captured by the camera 11, the temporal By analyzing the transition, the state of the driver DR can be detected with higher accuracy. Other points are the same as those in FIG. 1, and the description is omitted. In the driver state detection unit 1, the camera 11 and the image processing unit 12 may be omitted, and only the biological information acquisition unit 13 may be provided.

  According to the fifth embodiment described above, the detection accuracy of the drowsiness level of the driver DR is improved, and the drowsiness driving can be more effectively prevented.

  FIG. 10 is a flowchart showing the operation of the driving prevention device 100 according to the sixth embodiment of the present invention. The configuration of the drowsy driving prevention device 100 is the same as that in FIGS. 1 and 7 to 9. Also, in FIG. 10, the same reference numerals are given to steps for performing the same processing as in FIG. In FIG. 5, the drowsiness level LV is divided into three stages (levels 1 to 3), but in FIG. 10, the awakening action is executed using a single drowsiness level LV exceeding the threshold K.

  In FIG. 10, in step S1, the driver DR is photographed by the camera 11, and the photographed image is processed by the image processing unit 12 to generate a face image of the driver DR. In step S2, the drowsiness level detection unit 21 analyzes the face image and detects the drowsiness level of the driver DR.

  In step S3, the drowsiness level detection unit 21 determines whether or not the drowsiness level LV detected in step S2 exceeds a preset threshold K. If the result of the determination is that the drowsiness level LV does not exceed the threshold value K (step S3: NO), the process returns to step S1 and repeats steps S1 to S3. On the other hand, when the drowsiness level LV exceeds the threshold value K (step S3: YES), the process proceeds to step S5a.

  In step S5a, the awakening means selecting unit 22 randomly selects any one of the awakening means from among the plurality of different awakening means set by the awakening means setting unit 4 and executes a signal indicating the selected awakening means. Output to section 3. The type of awakening means set by the awakening means setting unit 4 is the same as that shown in FIG. In the following step S6a, the awakening execution unit 3 executes the awakening action by the awakening means selected in step S5a. For example, any of output of music, conversation by the portable terminal 200, binding of a seat belt, and generation of fragrance are performed. Incidentally, as in the case of the first embodiment, two or more awakening means may be selected from a plurality of awakening means. In this case, a plurality of awakening actions corresponding to a plurality of awakening means are performed in parallel.

  After executing step S6a, the process proceeds to step S11, where the drowsiness level detection unit 21 determines whether or not the driver DR has awakened by performing the awakening action. If the result of the determination is that the driver DR is not awake (step S11: NO), the process proceeds to step S12, and the awakening action by the awakening execution unit 3 is continued. On the other hand, when the driver DR is awake (Step S11: YES), the process returns to the beginning and monitors the drowsiness level LV of the driver DR in Steps S1 to S3. Then, when the drowsiness level LV exceeds the threshold value K again in step S3, an action for awakening the driver DR is executed in steps S5a to S6a and S11 to S12.

  According to the above-described sixth embodiment, as in the first embodiment, the awakening means is selected at random, so that the awakening action unpredictable for the driver DR is executed every time, and the driver DR The arousal effect can be enhanced without losing the freshness of the food.

  FIG. 11 is a flowchart showing the operation of the driving prevention device 100 according to the seventh embodiment of the present invention. The configuration of the drowsy driving prevention device 100 is the same as that in FIGS. 1 and 7 to 9. Further, in FIG. 11, the same reference numerals are given to steps for performing the same processing as in FIG.

  In the flowchart of FIG. 11, step S13 of FIG. 6 is added to the flowchart of FIG. When the driver DR is awake in step S11 (step S11: YES), the process proceeds to step S13. In step S13, as in the case of FIG. 6, the awakening means selecting unit 22 learns the causal relationship between the awakening means and the awakening effect (effectiveness of awakening), ranks the awakening means, and determines the result. Record. This ranking is repeated and updated each time the awakening action is performed. Then, in the next step S5a, the awakening means selecting unit 22 preferentially selects the waking means having the highest rank (having the greatest awakening effect).

  According to the above-described seventh embodiment, as in the second embodiment, the awakening means having a remarkable awakening effect is preferentially selected, so that the driver DR can be awakened more effectively.

  FIG. 12 shows a dozing driving prevention device 100 according to an eighth embodiment of the present invention. 12, the awakening means setting unit 4 and the awakening means storage unit 23 in FIG. 1 are omitted. The control unit 2 is configured by an AI (Artificial Intelligence) chip having a function such as deep learning.

  In the first embodiment of FIG. 1, the awakening means selected by the awakening means selecting unit 22 is set by the driver by the awakening means setting unit 4. On the other hand, in the eighth embodiment in FIG. 12, the awakening means selecting unit 22 automatically selects the optimum awakening means for the driver estimated from the characteristics of the driver DR. For example, the awakening means selecting unit 22 acquires the preference information indicating the preference of the driver DR as the information on the characteristics of the driver DR, and based on the acquired preference information, sets the awakening means that matches the preference of the driver DR. , As the best awakening means.

  More specifically, the awakening means selecting unit 22 acquires the search history, the browsing history, the viewing history, the purchase history, and the like recorded in the portable terminal device 200 of the driver DR via the communication unit 38. Information transmitted from the DR on the network, for example, information such as favorite content (music) registered in a music-related SNS (Social Networking Service) is acquired via the communication unit 38. In the case of SNS, the content registered by a friend of the driver DR may be acquired. Then, based on these pieces of information, the type of preference that the driver DR has is analyzed and analogized, and preference information indicating the preference of the driver DR is obtained. Then, based on the acquired preference information, content such as music, rakugo, comics, talk, etc., matching the preference of the driver DR is acquired from the server 6 via the communication unit 38 and the Internet 5, and the content is acquired by the driver. Select as the optimal awakening means for DR. In this case, the content corresponding to the sleepiness level LV of the driver DR is selected. For example, if the content is music, a noisy (for example, a rhythmic) music is selected when the sleepiness level is LV = 3, compared to when the sleepiness level is LV = 1. The wake-up execution unit 3 executes the wake-up action by playing back the content selected in this way on the audio device 31.

  As another example, the awakening execution unit 3 determines a favorite idle of the driver DR estimated from a search keyword and a favorite face data of a search history, and cooperates with an application provided by the idle to perform mobile communication. An operation in which the terminal 200 receives an incoming call from an idle and the driver DR talks with the idle is also possible.

  According to the above-described eighth embodiment, the optimal awakening means for the driver DR is automatically selected, so that the driver DR does not need to set the awakening means by himself, and the convenience is improved.

  FIG. 13 shows a dozing driving prevention device 100 according to a ninth embodiment of the present invention. In FIG. 13, an awakening means setting unit 4 and an awakening means storage unit 23 are added to the configuration of FIG. That is, the ninth embodiment is a combination of the first embodiment (FIG. 1) and the eighth embodiment (FIG. 12). The awakening means setting section 4 is provided with an automatic setting input section 4a.

  In FIG. 13, the driver DR can specify whether the awakening means is set by the driver DR by the awakening means setting unit 4 or is automatically selected by the awakening means selecting unit 22. ing. Specifically, when the driver DR does not input the automatic setting in the automatic setting input unit 4a, as described with reference to FIG. Selected by the selection unit 22. On the other hand, when the driver DR inputs the automatic setting using the automatic setting input unit 4a, the wake-up unit selection unit 22 automatically selects the optimum wake-up unit for the driver DR as described with reference to FIG. .

  According to the ninth embodiment described above, since the driver can set the awakening means optimal for the driver DR by himself / herself or leave it to the device side selection, the convenience is further improved.

  FIG. 14 shows a dozing driving prevention apparatus 100 according to a tenth embodiment of the present invention. In FIG. 14, an evaluation input unit 9 to which the evaluation of the arousal effect is input by the driver DR is added to the configuration of FIG. The evaluation input unit 9 is provided, for example, in the above-described MID (multi-information display). FIG. 15 is a flowchart showing the operation of the dozing driving prevention device 100 of FIG. In FIG. 15, steps for performing the same processing as in FIG. 6 are denoted by the same reference numerals.

  In the above-described second embodiment (FIG. 6), the causal relationship between the arousal means and the arousal effect is based on the drowsiness level re-detected by the drowsiness level detection unit 21 after the awakening action is performed by the awakening execution unit 3. And the awakening means having the greatest arousal effect was preferentially selected. On the other hand, in the tenth embodiment, after the awakening action is executed by the awakening execution unit 3, priority selection of the awakening unit is executed based on the evaluation input by the driver DR through the evaluation input unit 9.

  More specifically, in the flowchart of FIG. 15, when the driver DR wakes up by executing the wake-up action (Step S11: YES), after the engine of the vehicle stops (Step S14: YES), the driver DR sets the wake-up effect. Is input from the evaluation input unit 9 (step S15). As an example, on the screen of the evaluation input unit 9, five star marks are arranged, and if the awakening effect is 3 in a 5-grade evaluation, the evaluation input is performed by touching the three star marks. The input evaluation is sent to and recorded by the awakening means selecting unit 22, and the awakening means selecting unit 22 preferentially selects an awakening means having the greatest awakening effect from a plurality of awakening means based on the evaluation. . Although the evaluation is input after the engine is stopped in FIG. 15, the evaluation may be input when the vehicle is stopped.

  According to the above-described tenth embodiment, when the awakening means selecting unit 22 selects the awakening means, the evaluation of the driver DR with respect to the awakening effect is reflected, so that a more optimal awakening means is selected for the driver DR. And the wakefulness effect can be improved.

  In each of the embodiments described above, the drowsy driving, which is one of the dangerous driving, is taken as an example. However, the present invention is not limited to the drowsy driving, and the driver DR may lose attention and lose consciousness. The present invention can also be applied to the prevention of dangerous driving to be performed, that is, the prevention of casual driving. The degree of unintentionalness (innocence) of the driver DR can be detected from the face image captured by the camera 11 by deep learning. For this reason, the control unit 2 (FIG. 1 and the like) is provided with a looseness detection unit (not shown) for detecting the looseness. The degree of inattentiveness is an example of the “awakening level” in the present invention, and the higher the degree of inattentiveness, the lower the arousal level. When drunk driving is confirmed, the driver DR performs a wake-up action according to the wake-up level (degree of madness), as in the case of driving asleep.

  The present invention can also be applied to a case where the driver DR is prevented from driving dangerously when he / she is suddenly attacked by an illness. The sudden illness of the driver DR can be detected from the face image captured by the camera 11, or from the biological information acquired by the biological information acquiring unit 13 (FIG. 9). For this reason, the control unit 2 is provided with a sudden disease detection unit (not shown) for detecting a sudden disease. For example, when the face of the driver DR becomes pale or the heart rate abnormally decreases, it is determined that the sudden disease has occurred. In the case of an acute illness, the level of arousal decreases as the symptoms increase. When a sudden illness is confirmed, a wake-up action corresponding to the wake-up level is performed on the driver DR. Note that, regardless of the arousal level, a single awakening action may be executed by detecting a sudden disease.

  In addition, the present invention can be applied to a case where inattentive driving, which is dangerous driving, is prevented. The inattentiveness of the driver DR can be detected by analyzing the gaze of the driver DR, the direction of the face, and the characteristics of the operation of changing the direction of the face from the face image captured by the camera 11. it can. For this reason, the control unit 2 is provided with an inattentiveness detection unit (not shown) for detecting inattentiveness. In the case of inattentive driving, unlike a dozing driving or a lazy driving, an event of a decrease in arousal level does not occur, but for example, if the state of inattentiveness continues for a certain period of time, or if the frequency of inattentiveness exceeds a predetermined number Is determined to be inattentive driving. When inattentive driving is confirmed, a predetermined awakening action is performed on the driver DR. The awakening in this case means that the driver DR is aware that he / she is now driving dangerously inattentively. As the wake-up action, a single wake-up action may be performed, or different wake-up actions may be performed according to the degree of inattentiveness (duration or frequency).

  As described above, the present invention can be widely applied to the prevention of dangerous driving when the driver is in an abnormal state such as drowsiness, drama, sudden illness, and inattentiveness. FIG. 16 shows a dangerous driving prevention device 101 according to an eleventh embodiment that can cope with these four types of abnormal states. In FIG. 16, the same parts as those in FIGS. 1, 7 to 9, and 12 to 14 are denoted by the same reference numerals. In addition, components (portable terminal device, Internet, etc.) other than the dangerous driving prevention device 101 are not shown.

  In FIG. 16, the control unit 2 includes an abnormal state detection unit 24. The abnormal state detection unit 24 is configured to determine whether the driver DR is in a drowsy state, a drowsy state, A sudden disease state and an inattentive state are detected, and if at least one of them is detected, it is determined that the driver DR is in an abnormal state. Other configurations are the same as those of the above-described embodiment, and thus description thereof will be omitted.

  FIG. 17 is a flowchart showing the operation of the dangerous driving prevention device 101 of FIG. In step S21, the driver DR is photographed by the camera 11 to generate a face image. In step S22, the biological information of the driver DR is acquired from the biological information acquiring unit 13. In step S23, the abnormal state detection unit 24 determines whether or not the driver DR is in an abnormal state such as drowsiness, dumb, sudden illness, and inattentiveness based on the face image in step S21 and the biological information in step S22. I do. If the driver DR is not abnormal (step S23: NO), the process returns to step S21, and if the driver DR is abnormal (step S23: YES), the process proceeds to step S24.

  In step S24, the awakening means selecting unit 22 selects the awakening means set by the driver DR itself or the optimal awakening means automatically set in accordance with the driver DR, and in step S25, the awakening execution unit 3 Executes the awakening action by the awakening means. Thereafter, it is determined whether or not the driver DR has awakened (step S26). If the driver DR has awakened (step S26: YES), the process returns to step S21. If not awakened (step S26: NO), the process proceeds to step S27. .

  In step S27, it is determined whether the awakening action has been performed N times (N ≧ 2). If it has not been executed N times (step S27: NO), the process returns to step S25, and the awakening action is executed again. If the driver DR does not awaken even after performing the awakening action N times (step S27: YES), the danger information relating to the abnormal state of the driver DR is notified outside the vehicle by the outside notification unit 40 in step S28.

  In the present invention, in addition to the above-described embodiments, the following various embodiments can be adopted.

  In the above embodiment, the drowsiness level detection unit 21 detects the drowsiness level based on the VOR (vestibular oculomotor reflex) of the driver DR, but the means for detecting the drowsiness level is not limited to the VOR. For example, using the AI deep learning technique, the state of the driver DR can be determined with high accuracy, and the drowsiness level can be detected. Further, the sleepiness level of the driver DR may be detected based on the frequency of eyelid opening / closing, a change in pupil diameter, and the like, which have been conventionally performed.

  FIG. 7 shows an example in which the outside-of-vehicle notifying unit 40 notifies the horn 41 and the lamp 42 of danger information, but the present invention is not limited to this. As another example, the outside-of-vehicle notifying unit 40 performs inter-vehicle communication for directly communicating between vehicles instead of (or in addition to) the horn 41 and the lamp 42, or performs communication between vehicles via a roadside device. The danger information relating to the abnormal state of the driver DR may be notified to the traveling vehicle outside the vehicle using the road-vehicle communication. In addition, danger information can be transmitted to mobile terminals (for example, smartphones) carried by passengers or pedestrians of other vehicles nearby, or to communication systems provided by police, fire departments, schools, etc., via the Internet. You may make it transmit. Further, danger information may be notified through an existing emergency call system such as Helpnet (registered trademark) or E-call.

  The type of awakening means shown in FIG. 4 is an example, and the invention is not limited thereto. For example, the driver DR may be awakened by stimulating the driver DR by a massage mechanism. In addition, instead of ordinary music, the driver DR may be awakened by music having a subliminal effect. Further, since the awakening means may be a physical stimulus, it may be temperature, humidity, or the like.

  In addition, it is not essential that all types of awakening means shown in FIG. 4 can be set by the awakening means setting unit 4, and a part of them may be set by the awakening means setting unit 4. Further, in FIG. 4, it is not essential to set a plurality of awakening means for all levels, and a single awakening means may be set for all or some levels.

  In step S4 of FIGS. 5 and 6, an example in which the drowsiness level LV is divided into three levels (levels 1 to 3) is shown. You may.

  In step S11 of FIGS. 5, 6, 10, and 11, the presence or absence of awakening is determined based on the drowsiness level LV of the driver DR. However, instead of the drowsiness level LV, a response from the driver DR (for example, The presence / absence of awakening may be determined based on the presence / absence of operation).

  In the embodiment of FIG. 2, an example is shown in which the camera 11 is provided on the instrument panel 51 of the driver's seat. May be installed.

  The embodiments described above can be combined as appropriate. For example, in the embodiments shown in FIGS. 8, 9, 12 to 14, the outside notification unit 40 shown in FIG. 7 may be provided. Further, in the embodiments of FIGS. 1, 7, 8, and 12 to 14, the biological information acquisition unit 13 shown in FIG. 9 may be provided. In the embodiments of FIGS. 8, 12, 13 and 16, the evaluation input unit 9 shown in FIG. 14 may be provided.

  In each of the above embodiments, an example in which the present invention is applied to a dangerous driving prevention device mounted on a motor vehicle is described. However, the present invention is directed to a dangerous driving prevention device mounted on another vehicle such as a bus or a truck. It can also be applied to devices.

DESCRIPTION OF SYMBOLS 1 Driver state detection part 2 Control part 3 Awakening execution part 4 Awakening means setting part 8 Call destination 9 Evaluation input part 11 Camera 12 Image processing part 21 Sleepiness level detection part (Awakening level detection part)
Reference Signs List 22 awakening means selection unit 23 awakening means storage unit 24 abnormal state detection unit 31 audio device 38 communication unit 40 outside vehicle notification unit 50 vehicle 100 drowsy driving prevention device (dangerous driving prevention device)
101 Dangerous driving prevention device 200 Portable terminal device DR Driver

Claims (12)

A driver state detection unit that detects a state of a driver of the vehicle;
Based on the state of the driver detected by the driver state detection unit, a wake-up level detection unit that detects the wake-up level of the driver,
According to the arousal level detected by the arousal level detection unit, an awakening means selection unit that selects awakening means for awakening the driver,
The awakening means selected by the awakening means selection unit, the awakening execution unit that performs a predetermined awakening action to the driver,
The dangerous driving prevention device, wherein the awakening means selection unit selects an awakening means set by the driver or an optimal awakening means estimated from characteristics of the driver. The dangerous driving prevention device according to claim 1,
Dangerous driving characterized in that it is possible to designate by a predetermined operation of the driver whether the driver sets the awakening means by himself or automatically selected by the awakening means selection unit. Prevention device. The dangerous driving prevention device according to claim 1 or 2,
Awakening means setting unit for the driver to set his own desired awakening means,
The awakening means setting unit is capable of setting a plurality of awakening means for one awakening level,
The dangerous driving prevention device, wherein the awakening means selecting unit randomly selects any one of the awakening means from the plurality of awakening means. The dangerous driving prevention device according to claim 1 or 2,
The awakening means selecting unit,
As information on the characteristics of the driver, to acquire preference information indicating the preference of the driver,
A dangerous driving prevention device, wherein an awakening unit that matches a driver's preference is selected as the optimal awakening unit based on the acquired preference information. The drowsy danger driving prevention device according to claim 4,
The awakening means selecting unit,
Based on driver search history, browsing history, viewing history, purchase history, or information transmitted by the driver on the network, obtain the preference information,
Based on the acquired preference information, a content that matches the driver's preference is further acquired, and the content is selected as the optimal awakening means,
The dangerous driving prevention device, wherein the awakening execution unit executes the awakening action by playing back the content. The dangerous driving prevention device according to any one of claims 1 to 5,
The awakening means selecting unit,
Based on the arousal level re-detected by the arousal level detection unit after the awakening action is executed, learn the causal relationship between the awakening means and awakening effect,
A dangerous driving prevention device characterized by preferentially selecting an awakening means having the largest awakening effect from a plurality of awakening means. The dangerous driving prevention device according to any one of claims 1 to 5,
After the wake-up action has been performed, comprises an evaluation input unit for the driver to input an evaluation of the wake-up effect of the wake-up means,
The dangerous driving prevention device, wherein the wake-up means selection unit preferentially selects a wake-up means having the largest wake-up effect from a plurality of wake-up means based on the evaluation input by the evaluation input unit. The dangerous driving prevention device according to any one of claims 1 to 7,
The awakening execution unit,
When the arousal level detected by the arousal level detection unit is a predetermined level, performs communication with a preset call destination,
A dangerous driving prevention device, wherein the driver is awakened by a conversation performed between the call destination and the driver. The dangerous driving prevention device according to any one of claims 1 to 8,
A dangerous driving prevention device comprising: an outside-of-vehicle notifying unit that notifies dangerous information relating to a driver's awake state to the outside of a vehicle when a waking operation is performed by the awakening execution unit. The dangerous driving prevention device according to any one of claims 1 to 9,
Dangerous driving characterized in that the awakening means is a physical stimulus to the driver and includes all or a part of sound, conversation, light, vibration, impact, pressure, scent, wind, temperature, and humidity. Prevention device. A driver state detection unit that detects a state of a driver of the vehicle;
When the state of the driver detected by the driver state detection unit is abnormal, an awakening unit selection unit that selects an awakening unit for awakening the driver,
The awakening means selected by the awakening means selection unit, the awakening execution unit that performs a predetermined awakening action to the driver,
The dangerous driving prevention device, wherein the awakening means selection unit selects an awakening means set by the driver or an optimal awakening means estimated from characteristics of the driver. The dangerous driving prevention device according to claim 11,
The dangerous driving prevention device according to claim 1, wherein the abnormal state of the driver includes at least one of a drowsy state, a drunk state, a sudden illness state, and an inattentive state.

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