JP4225182B2 - Doze driving prevention device - Google Patents

Description

  The present invention relates to a snooze driving prevention apparatus that prevents a snooze driving by giving an operation load to the driver before the driver is drowsy while driving.

  2. Description of the Related Art Conventionally, a device that detects a driver's drowsiness during driving and restores the driver's concentration has been devised and put into practical use. As a method for detecting the driver's sleep state, for example, there is a method for detecting a driver's biological signal (see, for example, Patent Document 1).

  In the above-described method for detecting a driver's biological signal, a sensor is installed on the steering wheel, and when the driver grips the steering wheel, for example, a heart rate is detected as a biological signal from the driver's hand. And the waveform of the heart rate changes from the state of the driver's awakening, that is, the state of high wakefulness to the state of low wakefulness, and when the change is detected, the driver's dozing state is determined. Yes.

When it is determined that the driver is in the dozing state, the driver is awakened from the dozing state by issuing an alarm such as a warning sound.
JP 11-314534 A

  The conventional technique detects a driver's dozing state based on a biological signal after the driver starts falling asleep, and detects a dozing state only when the driver's arousal level is low. However, it is desired that the driver's arousal level be maintained at a high level so that the driver can cope with a road traffic situation that changes from moment to moment, and this cannot be achieved by the conventional technology. In this way, no device has been proposed so far that keeps the driver's arousal level from becoming low while the driver is driving.

  In addition to the detection of the drowsiness state based on the driver's biological signal, an apparatus for determining the drowsiness state of the driver based on the steering amount of the driver and the amount of meandering of the vehicle has been proposed. In this device, the driver's steering amount and the amount of meandering of the vehicle excluding the steering amount of the steering are obtained, and an increase in the amount of meandering of the vehicle other than the driver's steering operation is detected to detect the driver's steering amount. Determining dozing state. However, as in the conventional technique described above, the driver's arousal level has already decreased when the driver's drowsiness state is detected. May not be able to respond to the situation.

  In view of the above points, an object of the present invention is to provide a snooze driving prevention apparatus that can maintain a driver's arousal level by applying an operational load to the driver before the driver's awakening level is reduced.

To achieve the above object, according to the invention of claim 1, detecting unit outputs a signal corresponding to operation of the object to be operated by the driver (1), a built-in map data, has been Routing the navigation unit for outputting the map data and (3), from the current-out based on the output from the detector signals to calculate the operation amount of the executed driver within the past predetermined time, the map data output from the navigation unit A control unit that determines a decrease in the operation amount of the object by the driver by calculating a first reference operation amount within a predetermined time period in the past , and comparing the calculated operation amount with the first reference operation amount. and 4) a drowsy driving prevention device configured with a display unit (5), the control unit, if it is determined a decrease in the operation amount of the object by drivers, this decrease determination after a predetermined time And means for predicting, based on the map data output the second reference manipulated variable within the time until the over from the navigation unit (108), a second reference manipulated variable which is predicted by means of this prediction, pre driver and means for comparing the third reference manipulated variable stored in the setting storing unit (109), by means of this comparison, the second reference manipulated variable is determined the Most smaller than the third reference manipulated variable field The vehicle is characterized by comprising means (110) for displaying confirmation operation tasks such as forward vehicle confirmation, parallel vehicle confirmation, subsequent vehicle confirmation, lane confirmation, and vehicle speed confirmation on the display unit.

In this way, it is possible to determine that the driving of the driver is becoming monotonous by detecting the operation amount due to the driver operating the object and determining that the operation amount has decreased. By this determination, a confirmation operation task is given to the driver, so that the driver can always operate the vehicle. Therefore, the driver's arousal level can always be maintained, and the driver's drowsy driving can be prevented in advance .

In other words, the driver's operation is monotonous by determining that the operation amount by the driver has decreased because the operation amount of the driver executed within the past predetermined time from the present time is smaller than the first reference operation amount. Can be determined. Then, after determining that the driving of the driver is monotonous, it is possible to determine whether or not the driving of the driver continues to be monotonous as it is by predicting the second reference operation amount within a predetermined time. In other words, if it is determined that the driver continues monotonous driving, confirmation operation tasks such as forward vehicle confirmation, parallel vehicle confirmation, subsequent vehicle confirmation, lane confirmation, vehicle speed confirmation, etc. are displayed on the display unit. Thus, the driver's arousal level can be maintained. Therefore, it is possible to prevent the driver from falling asleep.

In the invention described in 請 Motomeko 2, the navigation unit, a road traffic information system antenna (25) is provided, the signal of the road traffic information received by the road traffic information system antenna, the control unit from the navigation unit The control unit predicts the second reference operation amount based on road traffic information from the road traffic information center in addition to the map data.

Thus, if a signal related to road traffic is received from the road traffic information center and the second reference operation amount is obtained from the map data using the signal, a more accurate second reference operation amount is predicted. can do.

In the invention according to claim 3 , the display unit is configured to include a head-up display or a windshield display, and an image is displayed on an image display portion of the head-up display or the windshield display. It is a feature.

  Thus, by displaying an image on the head-up display or windshield display, the driver can view the image without looking away from the front during driving.

  In addition, the code | symbol in the bracket | parenthesis of each said means shows the correspondence with the specific means as described in embodiment mentioned later.

(First embodiment)
Hereinafter, a first embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram of a snooze driving prevention apparatus according to the present invention. As shown in this figure, the snooze driving prevention apparatus includes a detection unit 1, a dozing monitoring switch 2, a navigation unit 3, a control unit 4, a display unit 5, and a speaker 6.

  The detection unit 1 outputs a signal of an object operated by a driver provided in the detection unit 1 to the control unit 4. Specifically, the detection unit 1 includes sensors and switches 7 to 15, and these elements are objects that are operated by a driver.

  The vehicle speed sensor 7 detects the speed of the vehicle, that is, the vehicle speed. The throttle sensor 8 detects the accelerator amount of the accelerator pedal A that the driver steps on when starting the vehicle. The brake hydraulic pressure sensor 9 detects the amount of depression of the brake pedal B that the driver steps on when traveling the vehicle. The steering torque sensor 10 detects the strength of turning the steering wheel H when the driver performs the steering wheel H operation. That is, the strength of rotation of the steering wheel H is detected. The steering angle sensor 11 detects a rotation angle when the driver operates the steering H.

  The light switch 12 displays a vehicle headlight. The ignition switch 13 is a switch for controlling start or stop of a vehicle engine. The wiper switch 14 is a switch for controlling start and stop of a wiper for wiping raindrops attached to glass such as a front windshield in order to secure a driver's field of view. The blinker switch 15 is a switch for displaying a right / left turn of the vehicle with a direction indicator.

  These sensors and switches 7 to 15 of the detection unit 1 are already installed in the vehicle, and detection signals from the sensors 7 to 11 and on / off signals of the switches 12 to 15 are output to the control unit 4. It has become.

  The dozing monitoring switch 2 is a switch that controls the start and stop of the measures for preventing the falling asleep according to the present invention, and is provided, for example, in the steering H (see FIG. 5 described later). Therefore, the driver can control the doze monitoring switch 2 while holding the steering wheel H.

  The navigation unit 3 outputs map data regarding the road on which the vehicle is operating to the control unit 4 based on map data stored in a built-in storage medium, for example, a DVD, and includes a GPS antenna 16.

  The GPS antenna 16 receives a signal transmitted from a GPS satellite, specifically, a side signal including information on the current time of the satellite and its own position, and outputs the side signal to the navigation unit 3. is there. Then, the navigation unit 3 obtains the current position of the vehicle by specifying the latitude and longitude of the vehicle based on the side signal input from the GPS antenna 16, and searches for the map data optimal for the vehicle operation. Map data is output to the control unit 4.

  The control unit 4 has a function of applying an operation load to the driver in order to maintain the driver's arousal level. The control unit 4 includes an input port unit 17, a memory unit 18, a central processing unit 19, and a control output port unit 20.

  The input port unit 17 outputs signals input from the detection unit 1, the dozing monitoring switch 2, and the navigation unit 3 to the memory unit 18 and the central processing unit 19.

  The memory unit 18 plays a role of storing a signal of a target object and map data input via the input port unit 17. Specifically, a signal from the detection unit 1 detected by the sensors and switches 7 to 15 and a map data signal from the navigation unit 3 are input via the input port unit 17, and these signals The contents are memorized. At this time, the signal of the object input from the detection unit 1 stores the total number of operation loads such as the operation of the steering wheel H and the operation of the blinker switch 15 by the driver as the operation amount.

  The central processing unit 19 calculates a driver operation amount after a predetermined time has elapsed since the driver started driving, and performs a process of giving an operation task to the driver based on the operation amount. Here, the operation task represents an operation load such as operating a wiper switch. In order to perform such processing, the central processing unit 19 reads out data stored in the memory unit 18 and performs the above processing using the data.

  The control output port unit 20 outputs the determination result of the central processing unit 19 to the display unit 5 and the speaker 6. Not only the display unit 5 and the speaker 6 but also other output means can be connected to the control output port unit 20.

  The display unit 5 displays an image on image display means, for example, a windshield display. The display unit 5 includes a memory (not shown), and image data and an image display program are stored in the memory. In the present embodiment, the display unit 5 includes a windshield display.

  The image is displayed on the windshield display as follows: In other words, an image is output from a video projector such as a projector installed in the instrument panel, and the image is displayed on the front windshield through a Fresnel mirror for displaying the image on the front windshield. Is displayed. This image display part is provided on the entire front windshield driver front so that the driver can visually recognize the displayed image without looking away from the front of the vehicle.

  The speaker 6 emits sound. When an image is displayed on the display unit 5, a warning sound is emitted from the speaker 6 provided in the vehicle interior in accordance with the image to be displayed, so that a tensioned image display is possible.

  Next, the dozing driving prevention process performed by the control unit 4 will be described with reference to the flowcharts shown in FIGS. 2 and 3. This process is executed by a program recorded in the central processing unit 19, that is, a doze driving prevention program for predicting the driver's doze state.

  First, when the ignition switch 13 of the vehicle is turned on so that power is supplied to the drowsy driving prevention device, the device is activated. In step 101 shown in FIG. 2, the operation history data stored in the memory unit 18 by the previous operation, that is, the operation amount data input from the detection unit 1 and the map data input from the navigation unit 3 are deleted. Is done. In this way, all data stored in the memory unit 18 is erased.

  Thereafter, in step 102, the map data routed by the driver operating the navigation unit 3 is output and input to the memory unit 18 via the input port unit 17 of the control unit 4. As described above, when the map data is input to the memory unit 18, the snooze driving prevention device enters a standby state.

  In step 103, it is determined whether the dozing monitoring switch 2 is turned on. When the dozing monitoring switch 2 is turned on, the routine proceeds to step 104. If the dozing monitoring switch 2 is not turned on, the standby state of the dozing operation prevention device is maintained.

  In step 104, when a signal from the dozing monitoring switch 2 is input to the central processing unit 19, a timer built in the central processing unit 19 is activated. That is, when the dozing monitoring switch 2 is turned on in step 103, the timer is activated from that point and the time is counted.

  Thereafter, when the driver starts operation, signals are output from the sensors and switches 7 to 15 of the detection unit 1, and these signals are stored in the memory unit 18 of the control unit 4 via the input port unit 17. Go.

  At this time, signals from the sensors and switches 7 to 15 are stored in the memory unit 18 as follows. That is, the number of times the brake pedal B input from the brake hydraulic pressure sensor 9 is depressed, the number of times the steering H input from the steering angle sensor 11 is operated to a predetermined angle or more, and the winker input from the winker switch 15 are operated. The signal of each operation task such as the number of times of operation is input to the memory unit 18, and the operation amount is stored for each time as shown in FIG. FIG. 4 is a diagram showing an example of the relationship between the amount of time and the operation amount that have elapsed since the timer was activated.

In step 105, it is determined whether T time has elapsed since the timer was activated. The T time is set to 1 hour, for example, but can be changed by the driver operating an operation panel (not shown). The reason why it is determined whether or not the time T has elapsed since the timer is operated is that it is unlikely that the driver will fall asleep immediately after the start of driving. For this reason, the process which prevents dozing driving after T time is performed. If T time has elapsed in step 105, the process proceeds to step 106 shown in FIG. 3, and if T time has not elapsed, time is continuously counted .

In step 106, the amount of operation by the driver within the time t, which is t hours after the time T has elapsed, is calculated. Here, the time t is 20 minutes, for example, but can be freely changed by the driver operating the operation panel. Specifically, as shown in FIG. 4, the amount of operation by the driver within time t is calculated as an area S1 indicated by hatching .

  Subsequently, based on the map data input from the navigation unit 3, a first reference operation amount that the driver is expected to operate within the time t is obtained. That is, the first reference operation amount that is considered to be operated by the driver is estimated within a time t that is t hours after the elapse of the time T.

  Specifically, the operation amount is obtained by using information on roads such as road curves, intersections, traffic lights, legal speeds, etc. in the map data. For example, when the road is curved, it is considered that the driver turns the steering more than a predetermined angle. In addition, when there are several intersections where traffic lights are installed, it is considered that a red light is encountered at least once. In such a case, it is considered that the driver depresses the brake pedal several times. In this way, it is possible to estimate what operation the driver performs at what point and how many times from road conditions. In this way, it is possible to predict the operation amount that the driver is supposed to operate from the map data.

  In step 107, the operation amount by the driver obtained in step 106 is compared with the first reference operation amount based on the map data. If the operation amount by the driver is smaller than the first reference operation amount based on the map data, it is determined that the operation amount by the driver has decreased, and the process proceeds to step 108.

  On the other hand, if the operation amount by the driver is larger than the first reference operation amount based on the map data, it is determined that the operation amount by the driver is large and the driver's arousal level is high, and the routine proceeds to step 114.

  In step 108, since it is determined that the operation amount by the driver has decreased, if the operation amount by the driver is still small in the future, there is a possibility that the driver's sleepiness will be promoted and eventually the driver will fall asleep. it is conceivable that.

Therefore, based on the map data, the second reference operation amount within the time t ′ from the road condition in which the driver will operate in the future until the predetermined time t ′ is predicted as the area S2 shown in FIG. The t ′ time is set to 30 minutes , for example.

  In step 109, the second reference operation amount within the time t ′ predicted in step 108 is compared with the third reference operation amount stored in the central processing unit 19 in advance. The third reference operation amount is an example for comparison with the second reference operation amount within the time t ′ obtained in step 108, and is stored in the central processing unit 19. The third reference operation amount can be freely changed by the driver using an operation panel (not shown). In addition, by setting the third reference operation amount large, it can be determined more strictly that the operation amount by the driver is decreasing.

  When the second reference operation amount within the time t ′ is smaller than the third reference operation amount, it is predicted that the operation amount by the driver will continue to be small and the driver will begin to fall asleep. In such a case, go to step 110. On the other hand, when the second reference operation amount within the time t ′ is larger than the third reference operation amount, it is determined that the operation amount by the driver is large and the driver's arousal level is high, and the routine proceeds to step 114.

  In step 110, a process of giving a confirmation operation task for operating the driver so as not to fall asleep is performed. The confirmation operation task refers to an operation task such as confirmation of a preceding vehicle, confirmation of a parallel running vehicle, confirmation of a following vehicle, confirmation of a lane, confirmation of a vehicle speed, and the like. Of these, in step 110, it is assumed that an operation task for confirming a preceding vehicle is first given.

  Specifically, a signal for displaying an operation task for confirming a preceding vehicle is output from the central processing unit 19 to the display unit 5 via the control output port unit 20. Then, in the display unit 5 that has received the signal, a forward vehicle confirmation program stored in a built-in memory (not shown) is executed. When this forward vehicle confirmation program is executed, as shown in FIG. 5, a star S that alerts the forward vehicle is displayed on the windshield display of the front windshield. FIG. 5 is a schematic diagram in which, for example, a star S is displayed on the windshield display. As shown in this figure, in order to give an operational load to the driver, an image is displayed on the windshield display so that the driver can confirm the vehicle ahead. Thereby, the driver's arousal level can be maintained.

  In addition, although the state where the preceding vehicle is traveling in front of the host vehicle is depicted in FIG. 5, an image for confirming the preceding vehicle is displayed on the windshield display regardless of the presence of the preceding vehicle. It has come to be. This allows the driver to recognize that an image is displayed, and causes the driver to check the displayed image so that attention is directed to the front of the host vehicle. In this way, the driver's arousal level can be kept high and sleep can be prevented.

  Further, the operation tasks given to the driver are not limited to the five confirmation operation tasks. For example, 20 confirmation operation tasks may be prepared, and several operation tasks may be selected from them. Further, when the image is displayed, by making a sound from the speaker 6, it is possible to make the driver alert easily.

  In step 111, it is determined whether or not the image display reset button E, which is an operation member, has been pressed. That is, in order to give a further operation load to the driver, the image displayed on the windshield display in step 110 is confirmed by pressing the image display reset button E provided on the steering wheel H, for example. I let you. Then, when this confirmation is made, the image display is terminated. In this way, it is possible not only to display an image but also to give the driver an operation task for pressing the image display reset button E in order to end the image display so that the driver does not sleep.

  If the image display reset button E is pressed by the driver in step 111, the process proceeds to step 114. On the other hand, if the image display reset button E is not pressed, the process proceeds to step 112.

  In step 112, it is determined whether or not a predetermined time (for example, 10 seconds) has elapsed since the image was displayed on the windshield display in step 110. If the predetermined time does not elapse, image display is performed until the predetermined time elapses.

  On the other hand, when a predetermined time has elapsed, in step 113, whether or not to display the next confirmation operation task is displayed as an image. That is, when the driver operates the operation button provided on the steering wheel H to display the next confirmation operation task, the process returns to step 110, and when the confirmation operation task is terminated without displaying, the process proceeds to step 114. .

  If it is determined that the amount of operation by the driver has not decreased by the processing of steps 107, 109, 111, and 113, the process proceeds to step 114, and it is determined whether or not t time has elapsed. When t time elapses, the routine proceeds to step 106, where the first reference operation amount is calculated within t time that is t hours after that point. On the other hand, when t time does not elapse, time is counted until t time elapses.

  As described above, the amount of operation by the driver is obtained, and by checking the amount of this operation amount, it is possible to know that the driving of the driver is monotonous, and it is determined that the amount of operation by the driver has decreased. Sometimes an operation task can be given to prevent the driver from falling asleep. Therefore, since the driver can be alerted before the driver starts falling asleep, the driver can be prevented from falling asleep.

(Second Embodiment)
In the present embodiment, only portions different from the first embodiment will be described. FIG. 6 is a block diagram of a snooze driving prevention apparatus according to the second embodiment of the present invention. In the present embodiment, the detection unit 1 includes a front radar 21, a front monitoring camera 22, a side monitoring camera 23, and a rear monitoring camera 24, and the navigation unit 3 includes a road traffic information system (hereinafter referred to as VICS). The difference from the first embodiment is that an antenna 25 is provided.

  The front radar 21 detects a vehicle located in front of the host vehicle, and includes, for example, a millimeter wave radar and a sensor. The front radar 21 is installed in the front part of the vehicle, the radar light is irradiated in front of the vehicle, and the radar light reflected by the vehicle located in front of the own vehicle is detected by a sensor. . The detected signal is output to the memory unit 18 via the input port unit 17 of the control unit 4.

  The front monitoring camera 22, the side monitoring camera 23, and the rear monitoring camera 24 capture the front, side, and rear of the vehicle, and are installed at the front, side, and rear positions of the vehicle, respectively. Images captured by the front monitoring camera 22, the side monitoring camera 23, and the rear monitoring camera 24 are output to the memory unit 18 via the input port unit 17 of the control unit 4.

  The VICS antenna 25 receives a road traffic information signal transmitted from the road traffic information center. The road traffic information is information relating to road traffic such as a place under construction and a place where traffic is congested. When the road traffic information is input to the navigation unit 3, the navigation unit 3 outputs map data including the road traffic information.

  Next, the dozing driving prevention process performed by the control unit 4 will be described with reference to the flowcharts shown in FIGS. 7 and 8. Similar to the first embodiment, this process is executed by a program recorded in the central processing unit 19, that is, a doze driving prevention program for predicting the driver's doze state.

  First, when the ignition switch 13 of the vehicle is turned on so that power is supplied to the drowsy driving prevention device, this device is operated. In steps 201 and 202 shown in FIG. 7, processing similar to that in steps 101 and 102 of the first embodiment is performed.

  Next, in step 203, traffic monitoring around the vehicle is performed. Specifically, a road traffic information signal transmitted from the road traffic information center is received by the VICS antenna 25, and the road traffic information is added to the map data based on the signal. As described above, when information such as traffic congestion or road construction is added to the map data input to the memory unit 18, the dozing operation prevention device enters a standby state.

  In steps 204 to 209, the same processing as that in steps 103 to 108 in the first embodiment is performed, and then the processing in step 210 is executed.

  In step 210, the road traffic situation such as traffic jam is grasped from the road traffic information stored in the memory unit 18. Specifically, in the map data set with the route, it is grasped which place on the map is congested, under construction, and the like. Then, in consideration of the road traffic situation, the second reference operation amount is predicted within the time period t ′ after the predetermined time period t ′ from the road situation where the driver will operate in the future. At this time, since the second reference operation amount in consideration of the road traffic situation is predicted, a more accurate operation amount can be estimated.

  In step 211, the same process as in step 109 of the first embodiment is performed, and if the second reference operation amount is smaller than the third reference operation amount, the process proceeds to step 212.

  In step 212, display contents are selected. Specifically, the confirmation operation task is selected based on the amount of the signal of the object input to the memory unit 18 and the image of each camera. When a front vehicle is detected by the front radar 21, the operation task for confirming the front of the vehicle is selected with the highest priority. In this embodiment, confirmation operation tasks using the cameras 22 to 24 are prepared, and these confirmation operation tasks are preferentially selected.

  Thereafter, in steps 213 to 217, the confirmation operation task display process similar to steps 110 to 114 of the first embodiment is performed.

  In this manner, an operation task for preventing the driver from falling asleep can be given. In the present embodiment, since the front radar 21 and the cameras 22 to 24 are provided, it is possible to select a confirmation operation task that encourages safe driving by the driver based on these signals, and to give the confirmation operation task. it can. Therefore, the driver can maintain the arousal level by executing these confirmation operation tasks. Thereby, it is possible to prevent the driver from falling asleep.

(Other embodiments)
The means for displaying an image is not limited to the windshield display, and an image may be displayed on a head-up display. In this way, even if the head-up display is used, the driver can continue driving without diverting the line of sight from the front. In addition, you may make it use not only the said windshield display and a head-up display but image display means, such as a liquid crystal display which can display an image.

  The display method of the confirmation operation task is not limited to the method of the first and second embodiments, and may be another display method. For example, when the driver does not operate the operation button provided on the steering wheel H, the driver can process the confirmation operation task by displaying a warning image or a warning sound.

  In the first and second embodiments, in steps 108 and 209, the second reference operation amount within the time t ′ is predicted, but the operation amount within a predetermined distance may be predicted. In this way, it is possible to predict an operation amount that the driver is expected to operate on the target object even from a predetermined distance.

  In the first and second embodiments, the third reference operation stored in advance in the central processing unit 19 for comparison of the second reference operation amount within the predicted t ′ time in steps 109 and 211. Amount was used. However, not limited to the third reference operation amount, operation history data when the driver last drove may be stored and compared using the operation amount unique to the driver. In such a case, a second memory unit (not shown) is installed in the control unit 4, and operation history data of the previous operation is stored in the second memory unit.

  In the first and second embodiments, as a confirmation operation task, the driver is caused to operate the image display reset button E that is an operation member provided in the steering wheel H. In addition to this, a confirmation operation task for operating the steering member H, the brake pedal B, the accelerator pedal A, and the like, which are the operation members shown in FIG. 5, may be displayed to operate these operation members. As described above, by operating various operation members, it is possible to prevent the driver from drowsing.

  Also, by installing a camera that detects the driver's line of sight on the instrument panel, it is possible to display an image captured by each camera on the windshield display so that the driver can easily see the image.

  The steps shown in each figure correspond to means for executing various processes.

It is a block block diagram of the dozing driving prevention apparatus in 1st Embodiment of this invention. It is a flowchart showing the content of the dozing driving prevention of 1st Embodiment. It is a flowchart showing the content of the dozing driving prevention of 1st Embodiment. It is the figure which showed an example of the relationship between time and the operation amount. It is a figure which shows the example which displayed the star on the windshield display. It is a block block diagram of the dozing driving prevention apparatus in 2nd Embodiment of this invention. It is a flowchart showing the content of the dozing driving prevention of 2nd Embodiment. It is a flowchart showing the content of the dozing driving prevention of 2nd Embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Detection part, 2 ... Dozing monitoring switch, 3 ... Navigation part, 4 ... Control part,
5 ... Display unit, 6 ... Speaker, S ... Star, E ... Image display reset button,
H ... steering, B ... brake pedal, A ... accelerator pedal.

Claims (3)

Detector outputs a signal corresponding to operation of the object to be operated by the driver (1),
A navigation unit (3) that incorporates map data and outputs the routed map data;
The calculated from based-out current of the signal output from the detecting unit to the operation amount of the executed driver within the past predetermined time, first within the based on the map data output from the navigation unit the past predetermined time calculating a reference operation amount, by comparing the first reference operation amount and these calculated the manipulated variable, the control unit determines a decrease in the operation amount of the object by the driver (4),
A drowsiness prevention device configured to include a display unit (5),
Wherein, prior SL driver by the object of the operation amount determination was if a reduction in, map the second reference manipulated variable within the time until the decrease determination after a predetermined time is output from the navigation unit Means for predicting based on data (108);
A second reference manipulated variable which is predicted by means of the prediction, and means (109) for comparing the previously third reference manipulated variable by the driver stored in the setting storing unit,
By means of this comparison, the second reference manipulated variable third reference operation amount intention identifying the cases smaller than, check the forward vehicle, the parallel running vehicle check, following vehicles confirmed, lane confirmation, confirmation of the vehicle such as confirmation A drowsiness prevention device comprising: means (110) for displaying an operation task on the display unit. The navigation unit is provided with a road traffic information system antenna (25), and a road traffic information signal received by the road traffic information system antenna is output from the navigation unit to the control unit. And
2. The snooze driving prevention apparatus according to claim 1, wherein the control unit predicts the second reference operation amount based on road traffic information from the road traffic information center in addition to the map data. The display unit is configured to include a head-up display or a windshield display,
The snooze driving prevention apparatus according to claim 1 or 2 , wherein an image is displayed on an image display portion of the head-up display or the windshield display.

Images