JP2018041408A - Vehicle driver abnormality notification device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicle driver abnormality notification device which can recommend a driver to spontaneously stop a vehicle when the driver is in an abnormal state.SOLUTION: A vehicle driver abnormality notification device comprises: a notification part 60 which, when it is determined by an abnormality severity determination part 50b that a driver is in an abnormal state, notifies notification target persons including at least the driver of the fact that the driver is in an abnormal state; a center display 60b which can display information representing the degree of the abnormal state of the driver and thereby notify the notification target persons of the information; and a display control part 50c which, when driving of the vehicle by the driver has continued for a predetermined time since the notification by the notification part 60, makes the center display 60b display information representing the degree of the abnormal state of the driver.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a vehicle driver abnormality notification device.

  Conventionally, there has been known a vehicle driver abnormality notification device for notifying a driver of a vehicle including the driver that the driver is in an abnormal state when the driver of the vehicle is in an abnormal state. Yes.

  For example, Patent Document 1 discloses a vehicle driver abnormality notification device that generates an alarm sound when a vehicle departs from a travel lane or when the possibility that the vehicle deviates from the travel lane is equal to or greater than a predetermined value. ing.

  Further, in the vehicle driver abnormality notification device of Patent Document 1, it is disclosed that the degree of fatigue of the driver of the vehicle is calculated and the volume and sound of the alarm sound are set according to the calculated degree of fatigue. Yes.

JP 2014-21913 A

  In the vehicle driver abnormality notification device described in Patent Document 1, an alarm is sounded to the driver of the vehicle to notify the driver that the driver is in an abnormal state.

  However, even if it is determined that the driver of the vehicle is in an abnormal state and the driver is notified that the driver is in an abnormal state, the abnormal state is such that the driver is not aware of it. In such a case, the driver may continue driving without trusting the notification, and the driver's abnormal state may be deteriorated while driving continues.

  Therefore, from the viewpoint of safety, the notification target person including the driver is notified of objective information regarding the abnormal state of the driver, and the driver himself is in an abnormal state. It is desirable that the driver is objectively recognized to encourage the driver to stop spontaneously.

  The present invention has been made in view of such a point, and an object of the present invention is to provide a vehicle driver capable of prompting the driver to stop spontaneously when the driver is in an abnormal state. It is to provide an abnormality notification device.

  In order to solve the above-mentioned problems, the present invention is directed to a vehicle driver abnormality notification device, and is detected by a driver state detection means for detecting the state of the driver of the vehicle and the driver state detection means. When the driver is determined to be in an abnormal state by the abnormal state determination means for determining whether or not the driver is in an abnormal state based on the driver state, and the abnormal state determination means, The notification means for notifying the notification target person including at least the driver that the driver is in an abnormal state and information indicating the degree of the abnormal state of the driver are displayed, and the information is indicated to the notification target person. Display means capable of notifying the information, and information indicating the degree of an abnormal state of the driver when the driver continues to drive the vehicle for a predetermined time from the notification by the notification means. To display It was configured as, and a display control unit.

  According to this configuration, when it is determined that the driver is in an abnormal state, first, the notification means notifies at least a notification target person including the driver that the driver is in an abnormal state. And even if the driver ignores the notification and continues driving the vehicle after notifying by the notification means, the driving of the vehicle by the driver is continued for a predetermined time from the notification by the notification means. Sometimes, the display control means displays objective information, which is information indicating the degree of the abnormal state of the driver, on the display means, and the information is notified to the notification subject. Thereby, it is possible to objectively indicate to the notification target person that the driver is in an abnormal state and to objectively recognize that the driver is in an abnormal state. As a result, it is possible to prompt the driver to stop spontaneously.

  The vehicle driver abnormality notification device is based on the driver state detected by the driver state detection unit when the abnormal state determination unit determines that the driver is in an abnormal state. The apparatus further comprises an abnormal state seriousness determination means for determining the seriousness of the abnormal state of the driver, and the seriousness of the abnormal state of the driver determined by the abnormal state seriousness determination means is the driver state. The display control means is configured so that the driver continues to drive the vehicle for a predetermined time from the notification by the notification means, and the abnormal state is serious while the driving is continued. When the degree determination means determines that the severity of the abnormal state of the driver is higher than the degree of seriousness notified by the notification means, the abnormality state of the driver is determined. Information representing the degrees may have a configuration that is configured to display on the display means.

  With this configuration, even after the driver is determined to be in an abnormal state and the notification means notifies the notification target person that the driver is in an abnormal state, the driver's abnormal state If the severity is such that the driver does not interfere with driving the vehicle, the driver can continue to drive the vehicle while respecting the driver's willingness to drive. On the other hand, even after notifying by the notifying means, the driver continues to drive the vehicle, and further, the seriousness of the abnormal state of the driver being notified by the notifying means during the continued driving is serious. When the severity level of the driver is higher than that, the objective information, which is information indicating the degree of the driver's abnormal state, is displayed on the display means, thereby increasing the severity of the driver's abnormal state. This is objectively notified to the notification subject. Accordingly, the driver can objectively recognize that the driver himself is in an abnormal state, and as a result, the driver can be urged to stop spontaneously.

  In an embodiment of the vehicle driver abnormality notification device, the information indicating the degree of the abnormal state of the driver is information indicating a change in physical condition of the driver from a normal state.

  With this configuration, it is possible to objectively notify the person to be notified that the state of the driver has changed from a normal state to an abnormal state, and to prompt the driver to stop spontaneously.

  In another embodiment of the vehicle driver abnormality notification device, the information indicating the degree of the abnormal state of the driver is determined by the abnormal state determination means after the driver is determined to be in an abnormal state. It is information indicating the driving behavior of the vehicle by the driver.

  With this configuration, it is possible to objectively notify the person to be notified that the driver is in an abnormal state and the driver's driving of the vehicle is affected. Can be urgently stopped.

  Alternatively, in another embodiment different from the one embodiment and the other embodiments described above, the information indicating the degree of the abnormal state of the driver is that the abnormal state determination means indicates that the driver is in an abnormal state. The configuration may be information indicating the basis for the determination.

  With this configuration, it is possible to prompt the driver to stop spontaneously by notifying the notification target person of objective information that is the basis for determining that the driver is in an abnormal state.

  As described above, according to the vehicle driver abnormality notification device according to the present invention, the display control means displays objective information, which is information indicating the degree of the driver's abnormal state, on the display means. It is possible to objectively indicate to the notification subject including at least the driver that the driver is in an abnormal state. As a result, the driver can objectively recognize that the driver himself is in an abnormal state, and can prompt the driver to stop spontaneously.

It is the schematic which shows the vehicle interior of the vehicle by which the vehicle driver abnormality notification apparatus which concerns on embodiment of this invention is mounted. It is a block diagram which shows the structure of the vehicle driver abnormality notification apparatus. It is a flowchart which acquires the data for determining the seriousness of a driver | operator's abnormal condition. It is a graph which shows the relationship between a driver | operator's head behavior and the horizontal G which acts on a vehicle when a driver | operator is in a normal state. It is a graph which shows the relationship between a driver | operator's head behavior and the horizontal G which acts on a vehicle when a driver | operator is in an abnormal state. It is a map for determining the seriousness of an abnormal state of a driver. It is an example of the information showing a driver | operator's physical condition displayed on a center display. It is an example of the information showing the driving behavior of the vehicle by the driver displayed on the center display. It is an example of the information displayed on the center display and used as the basis for the determination when it is determined that the driver is in an abnormal state. It is a part of flowchart when notifying that a driver | operator is in an abnormal state. It is the remainder of the flowchart at the time of notifying that a driver | operator is in an abnormal state.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 schematically shows the interior of a vehicle 1 in which a vehicle driver abnormality notification device according to an embodiment is mounted. The vehicle 1 is a four-seater vehicle, and a driver's seat 2 on which a driver D sits, a passenger seat 3 on which a passenger R of the vehicle 1 sits, and a rear seat 4 are provided in the passenger compartment. It has been.

  An instrument panel 5 is provided on the vehicle front side of the driver seat 2 and the passenger seat 3 (vehicle front end of the passenger compartment) so as to extend in the vehicle width direction, and from the vehicle front end of the instrument panel 5 to the front The glass 6 spreads upward. A center display 60b for displaying information such as images and characters is disposed on the top surface of the instrument panel 5 in the center in the vehicle width direction.

  Further, in the vehicle interior, a vehicle interior camera 11 that captures the interior of the vehicle including the driver D seated on the driver seat 2 is provided at a position on the vehicle front side of the driver seat 2 in the vehicle ceiling. Yes. The driver seat 2, the passenger seat 3, and the rear seat 4 are provided with seat weight sensors 13, which will be described later.

  Next, the configuration of the vehicle driver abnormality notification device will be described with reference to FIG.

  The vehicle driver abnormality notification device according to the present embodiment detects the state of the driver D of the vehicle 1 and determines that the driver D is in an abnormal state when the driver D is in an abnormal state. This is to notify the notification target person including at least the driver D, such as the driver D and the passenger R, the vehicle interior camera 11, the vehicle G sensor 12, the seat weight sensor 13, and the lane detection. The sensor 14, the control unit 50, the notification part 60 (notification means), and the center display 60b as a display means are provided.

  The control unit 50 is a controller based on a well-known microcomputer, and includes a central processing unit (CPU) that executes a program and a memory (described later) that is configured by a RAM or a ROM and stores the program and data. And a storage unit 50a) and an input / output (I / O) bus for inputting and outputting electrical signals.

  The control unit 50 includes a signal relating to image data indicating the driver state including at least the head behavior of the driver D from the vehicle interior camera 11, a lateral G acting on the vehicle 1, specifically, the vehicle 1. A seat weight that detects a signal from the vehicle G sensor 12 that detects an actual acceleration in the vehicle width direction of the vehicle 1 when turning a curve, and a load that acts on the driver seat 2, the passenger seat 3, and the rear seat 4 A signal from the sensor 13 and a signal from a lane detection sensor 14 that detects a traveling lane in which the vehicle 1 is traveling are input. The lane detection sensor 14 includes a camera that images the road surface in front of the vehicle, and detects the travel lane of the vehicle 1 by identifying the lane marking of the travel lane from the captured image data of the road surface.

  Then, the control unit 50 outputs an output signal to the notification unit 60 based on the input signal.

  The notification unit 60 notifies the notification target person that the driver D is in an abnormal state based on information sent from the control unit 50, for example, a speaker provided in the vehicle 1. 60a and center display 60b. The speaker 60a notifies the person to be notified that the driver D is in an abnormal state by emitting a warning sound or voice. The center display 60b displays information indicating that the driver D is in an abnormal state (such as “driver abnormality detection” characters), so that the driver D is in an abnormal state with respect to the notification target person. Notify that there is. The speaker 60 a and the sensor display 60 b are examples of the notification unit 60, and other devices (for example, a lamp or a character display device provided on the meter display of the vehicle 1) are used as the notification unit 60. May be. Further, the center display 60b also constitutes display means as described above. As will be described in detail later, the center display 60b displays information indicating the degree of the abnormal state of the driver D and notifies the information. The target person can be notified.

  In the present embodiment, the control unit 50 appropriately determines that the driver D is in an abnormal state, and when it is determined that the driver D is in an abnormal state, the driver D has a serious abnormality state. In order to determine the degree, a storage unit 50a and an abnormal state seriousness determination unit 50b are provided.

  The storage unit 50a stores data relating to the driver state detected by the vehicle interior camera 11, and accumulates the data.

  FIG. 3 is a flowchart showing processing operations performed by the control unit 50 when data related to the head behavior of the driver D is accumulated.

  First, in step S101, the vehicle interior camera 11 detects the head behavior of the driver D, and causes the control unit 50 to transmit data related to the head behavior of the driver D.

  In the next step S102, the data is stored in the storage unit 50a, the data is accumulated, and then the process returns.

  The control unit 50 executes processing based on the flowchart of FIG. 4 every 50 msec to 100 msec, and accumulates data related to the head behavior of the driver D.

  In addition, in the vehicle interior camera 11, in addition to the data related to the head behavior of the driver D, for example, data related to the behavior of the eyelid of the driver D can be acquired as the driver state, and the memory 50 a Data relating to the behavior of the eyelid of the driver D may also be accumulated.

  The abnormal state seriousness determination unit 50b determines that the driver D is abnormal based on the data about the driver's head behavior acquired by the vehicle interior camera 11 and the lateral G acting on the vehicle 1 detected by the vehicle G sensor 12. It is determined whether or not the vehicle is in a state, and when it is determined that the driver D is in an abnormal state, the severity of the abnormal state of the driver D is determined. That is, the abnormal state seriousness determination unit 50b constitutes an abnormal state determination unit and an abnormal state seriousness determination unit.

  Hereinafter, the determination of whether or not the driver D is in an abnormal state and the determination of the severity of the abnormal state of the driver D by the abnormal state seriousness determination unit 50b will be described in detail with reference to FIGS. I will explain it.

  The abnormal state seriousness determination unit 50b first reads data relating to the head behavior of the driver D from the storage unit 50a.

  Next, the lateral acceleration of the head of the driver D is calculated from the data, and the lateral acceleration of the head of the driver D and the lateral G acting on the vehicle 1 detected by the vehicle G sensor 12 are calculated. And compare. Although the details will be described later, the comparison is performed only when the lateral G acting on the vehicle 1 is a lateral G exceeding a predetermined value (0.1 G in the present embodiment). Is performed during or after turning the curve.

  FIG. 4 shows the relationship between the acceleration in the horizontal direction of the head of the driver D and the lateral G acting on the vehicle 1 when the driver D is in a normal state. When the vehicle 1 turns a curve, the lateral G acting on the vehicle 1 gradually increases from the beginning of the curve, reaches a maximum near the middle of the curve, and gradually decreases toward the end of the curve. Indicates. The side G acts on the head of the driver D of the vehicle 1. If the state of the driver D is normal, the driver D tries to resist the side G. The part moves with a delay with respect to the change in the lateral G. Therefore, when the state of the driver D is a normal state, the acceleration in the left-right direction of the driver D's head is slowly increased after being delayed with respect to the lateral G and then gradually decreased. Changes.

  On the other hand, when the driver D becomes in an abnormal state due to, for example, fatigue accumulated in the driver D, the muscle strength of the neck of the driver D is reduced. The resistance force is reduced and it becomes easier to follow the lateral G. Therefore, as shown in FIG. 5, when the driver D is in an abnormal state, the lateral acceleration of the head of the driver D is increased by the lateral G compared to when the driver D is in a normal state. It shows a change that quickly rises to the maximum and then decreases rapidly.

  Therefore, when the driver D is in a normal state and when the driver D is in an abnormal state, the head behavior of the driver D with respect to the lateral G acting on the vehicle 1 is different. Specifically, when the driver D is in an abnormal state, the head of the driver D moves more quickly with respect to the lateral G than when the driver D is in a normal state. Therefore, the abnormal state seriousness determination unit 50b of the present embodiment drives the vehicle with respect to the lateral G based on the difference between the timing at which the lateral G is maximized and the timing at which the lateral acceleration of the driver D is maximized. The driver's head movement delay time (hereinafter referred to as the driver's head delay time) is calculated, and from the driver's head delay time, whether or not the driver D is in an abnormal state, and the driver The severity of the abnormal state of D is determined. As a method of calculating the driver head delay time, the driver head delay time may be calculated from the difference between the timing at which the differential value of the lateral G becomes maximum and the timing at which the differential value of the acceleration of the driver D's head becomes maximum. Good.

  Then, the abnormal state seriousness determination unit 50b reads the seriousness determination map shown in FIG. 6, applies the lateral G acting on the vehicle 1 and the driver head delay time to the seriousness determination map, and the driver D Whether or not the vehicle is in an abnormal state and the severity of the abnormal state of the driver D are determined.

  The severity determination map is divided into a normal state region and an abnormal state region, and the abnormal state region is further divided into a plurality of regions according to the stage (level) of the severity level of the abnormal state. For example, in the portion where the lateral G is 0.1 G, a region where the driver head delay time is 1000 msec or more is a normal state region, and a region where the driver head delay time is less than 1000 msec is an abnormal state region. Further, in the portion where the lateral G is 0.1 G, in the abnormal state region, the region where the driver head delay time is 600 msec or more and less than 1000 msec is the abnormal state at the mildest stage. An area of an abnormal state (first level) that does not cause awareness of D, and an area in which the driver head delay time is 300 msec or more and less than 600 msec is an abnormal state that allows driver D to be aware of it. In addition, the region in which the driver D can drive the vehicle 1 is in an abnormal state (second level), and the region where the driver head delay time is 100 msec or more and less than 300 msec can be recognized by the driver D. This is an abnormal state (third level) where the vehicle 1 is difficult to drive and the driver head delay time is less than 100 msec. Region is a region of the abnormal state degree can not be operated by the driver D (4th level). As the lateral G becomes larger, the driver D becomes more conscious of enduring the lateral G, and the delay time of the movement of the head of the driver D becomes longer. Therefore, in the map of FIG. In both cases, the larger the lateral G is, the longer the driver's head delay time that is a criterion is.

  The abnormal state seriousness determination unit 50b determines that the driver D is abnormal depending on which region the coordinates determined on the seriousness determination map belong to based on the lateral G acting on the vehicle 1 and the driver head delay time. Whether or not the vehicle is in a state and the severity of the abnormal state of the driver D is determined. For example, when the lateral G is 0.1 G and the driver's head delay time is 1100 msec, the coordinates determined by the lateral G and the driver's head delay time belong to the normal state region, The state seriousness determination unit 50b determines that the driver D is in a normal state. On the other hand, for example, when the lateral G is 0.1 G and the driver's head delay time is 400 msec, the coordinates determined by the lateral G and the driver's head delay time are the first in the abnormal state region. Since it belongs to the two-level region, the abnormal state seriousness determination unit 50b determines that the driver D is in the abnormal state and determines that the seriousness of the abnormal state of the driver D is the second level.

  In this determination, the movement of the head of the driver D appears clearly, and the driver head delay time can be calculated accurately when the lateral G is 0.1 G or more. In the embodiment, 0.1G is set as a predetermined value for starting the determination by the abnormal state seriousness determination unit 50b. When the lateral G is less than 0.1G, the abnormal state seriousness determination unit 50b The determination as to whether or not the driver D is in an abnormal state and the determination of the severity of the abnormal state of the driver D are not performed. The predetermined value may be set to about 0.1 G, and the predetermined value may be set to 0.08 G, 0.12 G, or the like.

  When the abnormal state seriousness determination unit 50b determines that the driver D is in an abnormal state, the control unit 50 notifies the notification subject 60 that the driver D is in an abnormal state by the notification unit 60. . Accordingly, it is possible to prompt the driver D to stop spontaneously.

  However, when the abnormal state determined by the abnormal state seriousness determination unit 50b is an abnormal state that does not hinder driving such as the first level, the driver D ignores the notification by the notification unit 60, The driving of the vehicle 1 may be continued. If the driver D continues driving in the abnormal state, the abnormal state of the driver D may be deteriorated, which is not preferable from the viewpoint of safety.

  Therefore, the control unit 50 according to this embodiment determines that the driver D is in an abnormal state by the abnormal state seriousness determination unit 50b, and notifies the driver D that the driver D is in an abnormal state. For a predetermined time after that, the driving of the vehicle 1 by the driver D is continued and, while the driving is continued, the abnormal state seriousness determination unit 50b determines the seriousness of the abnormal state of the driver D by the notification unit 60. A display control unit 50c that displays information indicating the degree of the abnormal state of the driver D on the center display 60b when it is determined that the degree of seriousness is higher than the degree of seriousness at the time of notification. Is provided. That is, the display control unit 50b constitutes a display control unit. The predetermined time is set to a time sufficient for the driver D to recognize that he / she is in an abnormal state and park or park the vehicle 1 in a safe place by the notification by the notification unit 60. For example, about 5 minutes.

  The information indicating the degree of the abnormal state of the driver D is information that can objectively notify the notification target person that the driver D is in the abnormal state and the change in the severity of the abnormal state. For example, there is information as shown in FIGS.

  That is, for example, as information indicating the degree of the abnormal state of the driver D, the display control unit 50c displays, on the center display 60b, a graph indicating a change in the physical condition of the driver D from the normal state as illustrated in FIG. Can be displayed. The physical condition of the driver D is, for example, the driver's head delay time, but the vertical direction of the graph is used so that the notification subject can be easily notified that the physical condition of the driver D has deteriorated. The axis is desirably displayed as “physical condition” as shown in FIG.

  In the graph showing the change in the physical condition of the driver D, a region where the driver D is determined to be in a normal state and a region where the driver D is determined to be in an abnormal state are separated by a broken line as shown in FIG. Or color-coded so that the notification subject can be objectively notified that the driver D has changed from a normal state to an abnormal state.

  Further, as shown in FIG. 8, the display control unit 50c displays the vehicle 1 by the driver D after determining that the driver D is in an abnormal state as information indicating the degree of the abnormal state of the driver D. A graph and an image showing the driving behavior can be displayed on the center display 60b. Although FIG. 8 shows a case where both the graph and the image are displayed, only the graph or only the image may be displayed.

  The graph showing the driving behavior of the vehicle 1 by the driver D is such that the center of the traveling lane detected by the lane detection sensor 14 is 0, the left side in the vehicle width direction from the center is the + side, and the right side in the vehicle width direction from the center. Is a graph showing the amount of deviation of the vehicle 1 from the center of the travel lane in the vehicle width direction, where the driver D is determined to be in a normal state, and the driver D is determined to be in an abnormal state. As shown in FIG. 8, the area to be processed is divided by a broken line or color-coded. Then, when the driver D is in an abnormal state, when the vehicle 1 is traveling straight, it is possible to objectively notify the notification target person that the vehicle 1 is staggered greatly. ing. In the actual display, the vertical axis of the graph can be displayed as “vehicle wobble” as shown in FIG. 8 so that the notification subject can be easily notified that the vehicle 1 is wobbling. desirable.

  On the other hand, the image showing the driving behavior of the vehicle 1 by the driver D is an image showing the traveling locus of the vehicle 1 after the driver D is determined to be in an abnormal state, and the driver D becomes in an abnormal state. Thus, it is possible to objectively notify the driver D that the vehicle 1 is wobbling.

  Furthermore, as shown in FIG. 9, the display control unit 50 c uses the abnormal state seriousness determination unit 50 b as information indicating the degree of the abnormal state of the driver D when determining that the driver D is in the abnormal state. Information indicating the basis of the determination can be displayed on the center display 60b.

  The information indicating the basis for the determination by the abnormal state seriousness determination unit 50b is, for example, a graph representing the magnitude of the head D of the driver D as illustrated in FIG. The graph of FIG. 9 shows the absolute value of the swing width of the head when the head of the driver D swings in the left-right direction based on the movement of the head of the driver D taken by the vehicle interior camera 11. The area in which the driver D is determined to be in a normal state and the area in which the driver D is determined to be in an abnormal state are separated by a broken line or color-coded as shown in FIG. doing. Then, by showing the graph of FIG. 9, the notification subject is notified objectively that the head of the driver D is staggered to such an extent that the driver D is determined to be in an abnormal state. Can be done.

  By displaying graphs and images as shown in FIGS. 7 to 9 on the center display 60b, it is possible to objectively notify the person to be notified that the driver D is in an abnormal state. In addition, since it is possible to objectively recognize that the driver D is in an abnormal state, it is possible to prompt the driver D to stop spontaneously.

  Further, by displaying graphs and images as shown in FIGS. 7 to 9 on the center display 60b, it is possible to objectively notify the notification target person of the frequency and interval at which the driver D is determined to be in an abnormal state. Thus, the driver D can be further encouraged to stop spontaneously. It should be noted that the frequency and interval at which the driver D is determined to be in an abnormal state may be specifically displayed on the center display 60b with character information or the like.

  However, when the severity level of the abnormal state of the driver D is a severity level of the third level or higher, which is a severity level at which the driver D is difficult to drive the vehicle 1, the driver D stops spontaneously. It is likely that it is difficult.

  Therefore, the control unit 50 of the present embodiment includes the vehicle 1 when the abnormal state seriousness determination unit 50b determines that the seriousness of the abnormal state of the driver D is the third level or higher. An automatic evacuation control unit 50d that automatically evacuates to a safe place is provided.

  The automatic evacuation control unit 50d is determined by the abnormal state seriousness determination unit 50b to determine that the driver D is in an abnormal state and that the seriousness of the abnormal state of the driver D is a third level or higher. First, the notification unit 60 notifies the notification subject that the vehicle 1 is forcibly automatically retracted. After the notification by the notification unit 60, the automatic evacuation control unit 50d performs transmission 7 (see FIG. 2), steering 8 (see FIG. 2), brake 9 (see FIG. 2) of the vehicle 1 regardless of the driving operation of the driver D. And a signal is sent to the engine 10 (see FIG. 2 for the hydraulic control valve for the hydraulically controlled portion), and the vehicle 1 is retracted to a safe place such as a road shoulder while reducing the vehicle speed of the vehicle 1. Stop. Thus, when the seriousness degree of the abnormal state of the driver D determined by the abnormal state seriousness degree determination unit 50b is the third level or higher, the vehicle 1 is automatically retracted. Even when it is difficult for the driver D to drive the vehicle 1, the vehicle 1 can be safely stopped.

  Here, the control when notifying the abnormal state of the driver D by the control unit 50 will be described based on the flowcharts of FIGS. 10 and 11. In the flowcharts of FIGS. 10 and 11, the control regarding the determination of whether or not the driver D is in an abnormal state and the determination of the seriousness of the abnormal state of the driver D is executed by the abnormal state seriousness determination unit 50b. The control for displaying information indicating the degree of the abnormal state of the driver D on the center display 60b is executed by the display control unit 50c, and the control related to the automatic evacuation of the vehicle 1 is executed by the automatic evacuation control unit 50d. Is done.

  First, in step S201, the detection value of the vehicle G sensor 12 is read, and in the next step S202, whether the lateral G acting on the vehicle 1 detected by the vehicle G sensor 12 is a value of 0.1 G or more. Determine. When the determination in step S202 is NO, the process returns as it is. On the other hand, when the determination in step S202 is YES, the process proceeds to step S203.

  In step S203, data relating to the driver state stored in the storage unit 50a, that is, data relating to the head behavior of the driver D is read. In the next step S204, the driver head delay time is calculated, By applying to the severity determination map, it is determined whether or not the driver D is in an abnormal state. In the determination in step S204, the process returns when the driver D is in a normal state NO, while the process proceeds to step S205 when the driver D is in an abnormal state YES.

  In step S205, the severity of the abnormal state of the driver D is determined.

  In the next step S206, it is determined whether or not the severity of the abnormal state of the driver D is the first level or the second level. In the determination of step S206, when the severity of the abnormal state of the driver D is NO, which is a severity of the third level or higher, the process proceeds to step S215, while the severity of the abnormal state of the driver D is the first level or If YES at the second level, the process proceeds to step S207.

  In step S207, the notification unit 60 is activated to notify that the driver D is in an abnormal state. After step S207, the process proceeds to step S208.

  In step S208, it is determined whether or not the driving of the vehicle 1 by the driver D is continuously performed for a predetermined time from the notification by the notification unit 60. When the determination in step S208 is NO, the process proceeds to step S209. When the determination in step S208 is YES, the process proceeds to step S211.

  In the above step S209, it is determined whether or not the vehicle 1 has stopped or parked for a certain time or longer after the notification. When the determination in step S209 is NO, the process returns to step S208, while when the determination in step S208 is YES, the process proceeds to step S210. The fixed time is set to a time that does not include the case where the vehicle 1 stops at a red light, and is, for example, about 3 minutes.

  In step S210, the notification by the notification unit 60 is stopped. After step S210, the process returns.

  On the other hand, in step S211, whether the abnormal state of the driver D has deteriorated while the driving of the vehicle 1 by the driver D has continued, that is, the abnormal state severity has been increased while the driving of the vehicle 1 by the driver D continues. It is determined whether or not the seriousness of the abnormal state determined by the determination unit 50b is higher than the seriousness when the notification unit 60 notifies. When the determination at step 211 is NO, the process proceeds to step S209, while when the determination at step S211 is YES, the process proceeds to step S212.

  In step S212, information indicating the degree of the abnormal state of the driver D is displayed on the center display 60b, and the information is notified to the notification target person. As described above, the information indicating the degree of the abnormal state of the driver D includes the graphs and images illustrated in FIGS. After step S213, the process proceeds to step S213.

  In step S213, after the information is displayed in step S212, it is determined whether or not the vehicle 1 has stopped or parked for a certain period of time. When the determination in step S213 is NO, information indicating the degree of the abnormal state of the driver D is continuously displayed on the center display 60b until the vehicle 1 stops or parks for a predetermined time or more, while the determination in step S213 is YES. If so, the process proceeds to step S214.

  In step S214, the display on the center display 60b is stopped (when a notification unit other than the center display 60b is activated in step S207, the notification by the notification unit is also stopped). After step S214, the process returns.

  On the other hand, when the determination in step S206 determines that the seriousness of the abnormal state of the driver D is the third level or higher, in step S215, the driver D receives the notification target person. After notifying the abnormal state by the notification unit 60, in step S216, the notification subject is notified that the operation of the vehicle 1 is to be shifted to the automatic retreat operation.

  In the next step S217, the operation of the vehicle 1 is shifted to the automatic retreat operation, and the vehicle 1 is stopped at a safe place such as a road shoulder. After step S217, the process proceeds to step S218.

  In step S218, after the vehicle 1 stops, the notification that the operation of the vehicle 1 is shifted to the automatic retreat operation is stopped. After step S219, the process returns.

  Therefore, in this embodiment, when it is determined that the driver D is in an abnormal state, at least the driver D including the driver D is notified that the driver D is in an abnormal state, and the driver D Even if the notification is ignored and the driving of the vehicle 1 is continued, when the driving of the vehicle 1 by the driver D is continued for the predetermined time from the notification by the notification unit 60, the display control unit 50c Objective information such as information representing the degree of the abnormal state of the driver can be displayed on the center display 50c to objectively indicate to the notification subject that the driver D is in the abnormal state. As a result, the driver D can be caused to objectively recognize that the driver D is in an abnormal state, and the driver D can be urged to stop spontaneously.

  The present invention is not limited to the embodiment described above, and can be substituted without departing from the spirit of the claims.

  For example, in the above embodiment, the left-right acceleration of the head of the driver D is calculated as information for determining the severity of the abnormal state of the driver D. You may make it calculate the displacement amount of the left-right direction of a part. When the lateral G acts on the vehicle 1, the lateral displacement amount of the driver D's head also shows a change equivalent to the lateral acceleration of the driver D's head. The amount of displacement in the left-right direction can be used as information for determining the severity of the abnormal state of the driver D.

  Further, in the above embodiment, the display control unit 50c continues the driving of the vehicle 1 by the driver D for a predetermined time from the notification by the notification unit 60, and the abnormal state seriousness determination unit 50b while the driving is continued. Thus, when it is determined that the seriousness of the abnormal state of the driver D is higher than the seriousness at the time of notification by the notification unit 60, the information indicating the degree of the abnormal state of the driver D is determined. Is displayed on the center display 60b. However, the display control unit 50c is not limited to this, and the severity of the abnormal state of the driver D is higher than the severity when the notification unit 60 notifies the driver. Regardless of whether or not it has been determined that the degree of seriousness has reached a high level, when the driver D continues to drive the vehicle 1 for a predetermined time from the notification by the notification unit 60, Information representing the degree, It may be configured to display the centers display 60b.

  Furthermore, in the said embodiment, when the vehicle 1 stopped or parked for more than fixed time, it was made to stop the notification by the notification part 60, but it is not restricted to this, The switch which stops the notification by the notification parts 60-62 When the driver D presses the switch, the notification by the notification units 60 to 62 may be stopped even if the vehicle 1 has not stopped or parked for a certain period of time or longer. However, if the severity of the abnormal state of the driver D is a second level or higher, it is desirable to stop or park the vehicle 1 from the viewpoint of safety. It is desirable to perform control that enables release by the switch only when the severity is the first level.

  Further, while the driver D continues to drive the vehicle 1 from the notification by the notification unit 60, the state of the driver D may be improved and the driver D may be in a normal state. Therefore, while the driver D continues driving the vehicle 1 from the notification by the notification unit 60, the abnormal state seriousness determination unit 50b determines that the driver D has recovered from the abnormal state to the normal state. Sometimes, the notification by the notification unit 60 and the display on the center display 60b may be stopped.

  Furthermore, in the said embodiment, although the center display 60b was used as a display means, it is not restricted to this, The head-up display which displays information, such as an image and a character, in the position which the driver | operator D can visually recognize as a display means May be used.

  The above-described embodiments are merely examples, and the scope of the present invention should not be interpreted in a limited manner. The scope of the present invention is defined by the scope of the claims, and all modifications and changes belonging to the equivalent scope of the claims are within the scope of the present invention.

  The present invention is useful as a vehicle driver abnormality notification device for notifying that a driver is in an abnormal state when the driver is in an abnormal state.

1 Vehicle 11 Car interior camera (driver state detection means)
12 vehicle G sensor (driver state detection means)
50b Abnormal state seriousness determination unit (abnormal state determination means, abnormal state seriousness determination means)
50c Display control unit (display control means)
60 Notification part (notification means)
60b Center display (notification means, display means)
D Driver

Claims (5)

A vehicle driver abnormality notification device,
Driver state detection means for detecting the state of the driver of the vehicle;
An abnormal state determining means for determining whether or not the driver is in an abnormal state based on the driver state detected by the driver state detecting means;
A notification means for notifying the notification subject including at least the driver that the driver is in an abnormal state when the abnormal state determination means determines that the driver is in an abnormal state;
Displaying information indicating the degree of the abnormal state of the driver, and display means capable of notifying the notification target person of the information;
Display control means for causing the display means to display information indicating the degree of the abnormal state of the driver when the driver continues to drive the vehicle for a predetermined time from the notification by the notification means; A vehicle driver abnormality notification device comprising: a vehicle driver abnormality notification device; The vehicle driver abnormality notification device according to claim 1,
When the abnormal state determination means determines that the driver is in an abnormal state, the severity of the abnormal state of the driver is determined based on the driver state detected by the driver state detection means. Further comprising an abnormal state seriousness determination means for determining,
The severity of the abnormal state of the driver determined by the abnormal state seriousness determination means is divided into a plurality of stages based on the driver state,
The display control means is configured to continue the driving of the vehicle by the driver for a predetermined time from the notification by the notification means, and during the continuation of the driving, the abnormal state seriousness determination means causes the abnormality of the driver. When it is determined that the seriousness level of the state is higher than the seriousness level notified by the notifying means, information indicating the degree of the abnormal state of the driver is displayed on the displaying means. It is comprised so that it may carry out. The vehicle driver abnormality notification apparatus characterized by the above-mentioned. In the vehicle driver abnormality notification device according to claim 1 or 2,
The vehicle driver abnormality notification device according to claim 1, wherein the information indicating the degree of the abnormal state of the driver is information indicating a change in physical condition of the driver from a normal state. In the vehicle driver abnormality notification device according to claim 1 or 2,
The information indicating the degree of the abnormal state of the driver is information indicating the driving behavior of the vehicle by the driver after the abnormal state determination unit determines that the driver is in an abnormal state. A vehicle driver abnormality notification device characterized by the above. In the vehicle driver abnormality notification device according to claim 1 or 2,
The information indicating the degree of the abnormal state of the driver is information indicating a basis for the determination when the abnormal state determination unit determines that the driver is in an abnormal state. Driver abnormality notification device.

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