JP6011791B2 - Vehicle rearward monitoring device - Google Patents

Description

  The present invention relates to a vehicle rear monitoring apparatus, and more particularly to a technique for preventing a collision with a vehicle approaching from behind when the vehicle is parked.

When the vehicle (own vehicle) is parked or stopped, another vehicle such as a motorcycle or an automobile approaches from behind the own vehicle, and the other vehicle may pass the side of the own vehicle and pass the own vehicle. At this time, the driver of the other vehicle overtakes the other vehicle by running the other vehicle so as to have a space between the own vehicle and the vehicle so as to avoid a collision with the own vehicle.
However, if an occupant of the own vehicle such as a driver or passenger of the own vehicle opens the door of the own vehicle for getting off immediately before the other vehicle overtakes the own vehicle or while the other vehicle is overtaking the own vehicle, Even if the driver of the vehicle drives the other vehicle so as to have a space between the host vehicle and the vehicle, the door of the host vehicle may collide with the other vehicle.

  Therefore, in the vehicle rear monitoring apparatus of Patent Document 1, an alarm is issued when another vehicle approaches from behind the host vehicle and the unlocking operation of the rear seat door is performed, and the door handle of the rear seat door is further opened. When this happens, the door lock of the rear seat door is activated along with an alarm.

JP-A-6-201827

As described above, in the vehicle rear monitoring apparatus of Patent Document 1, the other vehicle approaches from behind the host vehicle, the unlock operation of the rear seat door is performed, and the door handle of the rear seat door is further opened. Then, the door lock of the rear seat door is operated.
However, when another vehicle approaches the rear of the host vehicle and the door handle of the rear seat door is operated when the door handle of the rear seat door is opened, for example, the driver of the other vehicle can get off the passenger The door lock is activated even if the driver of the other vehicle drives the other vehicle sufficiently between the vehicle and the other vehicle so that it is safe for the passenger of the vehicle to open the rear seat door. As a result, the passengers of the host vehicle are restricted from getting off the vehicle, which causes annoying passengers.

  The present invention has been made to solve such a problem, and the object of the present invention is to avoid a collision with a rear vehicle at the time of opening the door without giving a passenger annoyance. An object of the present invention is to provide a vehicular rearward monitoring device.

In order to achieve the above object, in the vehicle rear monitoring apparatus according to claim 1, vehicle state detection means for detecting a vehicle state of the host vehicle and an opening operation detection for detecting an opening operation of each door of the host vehicle. Means, other vehicle detection means for detecting other vehicles on the rear side of the own vehicle, display means for displaying an entry prohibition range formed in a predetermined area on the road surface on the rear side of the own vehicle, Control means for controlling the operation of the display means based on detection results of the vehicle state detection means, the opening operation detection means and the other vehicle detection means; and based on the detection result of the other vehicle detection means, Relative speed calculation means for calculating relative speed with the other vehicle, the relative speed calculated by the relative speed calculation means, and a predetermined time which is a period required for the passenger of the own vehicle to complete the getting-off Based on the above, And a display range calculating means for calculating the distance to the aft end of the entry prohibited range, the display means, a possible change the display position of the rear end portion of the entry prohibited range with respect to the vehicle The control means detects the parking / stopping state of the own vehicle by the vehicle state detection means, detects the approach of the other vehicle from the rear side of the own vehicle by the other vehicle detection means, When the opening operation detecting means detects the opening operation of the door on the side on which the other vehicle approaches, the display means on the road surface on the rear side of the own vehicle on the side on which the other vehicle approaches. Displaying the entry prohibition range and controlling the operation of the display means in accordance with the distance from the host vehicle to the rear end of the entry prohibition range calculated by the display range calculation means. Features.

Further, in the vehicle rear monitoring system according to claim 2, Oite to claim 1, wherein comprising a notifying means for notifying the presence of the other vehicle occupants of the vehicle, the control unit, the other vehicle detection means When the approach of the other vehicle is detected from the rear side of the host vehicle, the notification means is activated.
According to a third aspect of the present invention, there is provided the vehicle rear monitoring apparatus according to the first or second aspect , further comprising door lock means for locking the doors, wherein the control means is detected by the other vehicle detection means. When the other vehicle enters the entry prohibition range and the opening operation detecting means detects the opening operation of the door on the side where the other vehicle approaches, the door lock means detects the other vehicle. The door on the approaching side is locked.

According to the first aspect of the invention, when the host vehicle is parked or stopped, the approach of the other vehicle is detected from the rear side of the host vehicle, and the opening operation of the door on the side on which the other vehicle approaches is detected. Then, the entry prohibition range is displayed on the road surface on the rear side of the own vehicle on the side where the other vehicle approaches by the display means.
In this way, by displaying the entry prohibition range on the road surface on the rear side of the own vehicle on the side where the other vehicle approaches, the driver of the other vehicle traveling on the rear side of the own vehicle can be prevented from colliding with the own vehicle. It is possible to recognize that there is a possibility, and to promote traveling outside the entry prohibition range.

  Therefore, for example, the display range in the width direction of the entry prohibition range formed in a predetermined area, that is, the display range of the entry prohibition range on the outer side in the width direction of the host vehicle is set to include the fully open position of the door of the host vehicle. Therefore, when the vehicle is parked and the occupant gets off, even if the door is fully opened, the other vehicle is traveling outside the entry prohibition range, and the occupant of the own vehicle will not be disturbed. The collision between the host vehicle and the other vehicle can be avoided without bothering the vehicle.

Further, in order to avoid a collision between the host vehicle and another vehicle, the door lock or the like of the host vehicle is operated to prevent the passenger from getting off, so that it is possible to eliminate annoyance to the passenger.
In addition , the distance from the host vehicle to the rear end of the entry prohibition range is calculated based on the relative speed between the host vehicle and the other vehicle and a predetermined period which is a period required for the passenger of the host vehicle to complete the getting-off. Since the operation of the display means is controlled accordingly , for example, when the other vehicle approaches the host vehicle at a higher vehicle speed from the rear side of the host vehicle, the relative speed between the host vehicle and the other vehicle is large. The period until the collision between the host vehicle and the other vehicle is shortened, but when the relative speed is large, the entry prohibition range is displayed so that the distance from the host vehicle to the rear end of the entry prohibition range is increased. Thus, even if the other vehicle is traveling at a high speed, the driver of the other vehicle can recognize the entry prohibition range at an early stage .

Therefore, it is possible to avoid a collision between the host vehicle and the other vehicle by prompting the other vehicle to travel outside the entry prohibition range at an early stage.
According to the invention of claim 2 , when the approach of the other vehicle is detected from the rear side of the own vehicle by the other vehicle detecting means, the presence of the other vehicle is notified to the passenger of the own vehicle. Therefore, the occupant can surely recognize the approach of the other vehicle, and therefore, the collision with the other vehicle due to the occupant opening the door of the own vehicle can be avoided.

According to the invention of claim 3, when the entry of the other vehicle into the entry prohibition range is detected and the opening operation of the door on the side where the other vehicle approaches is detected by the occupant of the own vehicle, For example, the driver of the other vehicle does not notice the entry prohibition range, the other vehicle travels within the entry prohibition range, and the passenger of the own vehicle approaches the other vehicle. Even if the opening operation of the door on which the other vehicle approaches is performed without noticing, the door is locked, so that the collision between the own vehicle and the other vehicle due to the sudden opening operation of the door can be prevented.

1 is a schematic configuration diagram of a vehicle rear monitoring apparatus according to the present invention. It is a figure which shows typically an example at the time of parking and stopping the own vehicle on a road. It is a flowchart which shows the control routine of the alighting assistance control in the controller which concerns on this invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a schematic configuration diagram of a vehicle rear monitoring apparatus according to the present invention. Moreover, FIG. 2 is a figure which shows typically an example at the time of parking and stopping the own vehicle on a road. The white pentagon in FIG. 2 indicates the own vehicle M, the black pentagon indicates the other vehicle O approaching from the rear side of the own vehicle M, and the acute angle portions of the own vehicle M and the other vehicle O are the respective vehicles. Show forward. The hatched area in FIG. 2 indicates an entry prohibition range A of a predetermined area that is arbitrarily set in advance so that a collision between the host vehicle M and the other vehicle O cannot be avoided. The entry prohibition range A from the own vehicle M calculated from the relative vehicle speed V between the vehicle M and the other vehicle O and a predetermined time TTC that is a time required until the passenger of the own vehicle M completes getting off. The movement range of the rear end portion Ae of the entry prohibition range A that varies is shown based on the drawing distance X that is the distance to the rear end portion Ae. As shown in FIG. 2, the range of the entry prohibition range A from the side surface of the host vehicle M to the outer side in the width direction is the door Md in the rear view of the host vehicle M when the door Md of the host vehicle M is fully opened. Is arbitrarily set in a range including The minimum distance from the own vehicle M to the rear end Ae of the entry prohibition range A is that the other vehicle O does not collide with the door Md of the own vehicle M even when the other vehicle O is traveling at a low vehicle speed. It is set to a distance that can be avoided. The drawing distance X is set such that the distance from the host vehicle M to the rear end Ae of the entry prohibition range A increases as the relative speed between the host vehicle M and the other vehicle O increases. FIG. 2 shows that the host vehicle M is parked or stopped on the road, and the other vehicle O is traveling in the direction of the black arrow. The configuration of the vehicle rear monitoring device will be described below.

  As shown in FIG. 1, a vehicle rear monitoring device 1 includes a vehicle speed sensor (vehicle state detection means) 11, a shift device (vehicle state detection means) 12, an ignition switch (vehicle state detection means) 13, and a door switch. 14, a door handle switch (opening operation detection means) 15, a rear monitoring camera (other vehicle detection means) 16, a laser (display means) 21, a speaker (notification means) 22, and a controller 30. Yes. These various devices and various sensors are electrically connected.

The vehicle speed sensor 11 detects the vehicle speed of the host vehicle M. Then, the vehicle speed sensor 11 supplies the detected vehicle speed information to the controller 30. Note that the vehicle speed sensor 11 is always supplied with electric power regardless of whether the ignition switch 13 is ON or OFF so that vehicle speed information can be always supplied.
The shift device 12 includes a shift lever provided in the vicinity of the center console of the host vehicle M and a paddle provided on the back portion of the steering. Then, the shift device 12 allows the driver to operate the shift lever to an arbitrary shift position so that the host vehicle M is parked (P), reverse travel (R), forward travel (D), etc. The operation state of M is set. The shift device 12 then supplies the controller 30 with the shift position information selected by the shift lever. The shift device 12 is always supplied with electric power regardless of whether the ignition switch 13 is ON or OFF so that the shift position information can be always supplied.

The ignition switch 13 is for turning on (turning on) or turning off (turning off) a main power supply for enabling the host vehicle M to travel. The ignition switch 13 cannot turn on (turn on) or turn off (turn off) the vehicle speed sensor 11, the shift device 12, the rear monitoring camera 16, and the controller 30.
The door switch 14 detects opening / closing of each door Md of the host vehicle M. The door switch 14 supplies opening / closing information of each door Md of the host vehicle M to the controller 30. Note that the door switch 14 is always supplied with power regardless of whether the ignition switch 13 is ON or OFF so that the opening / closing information of the door Md of the host vehicle M can be always supplied.

  The door handle switch 15 detects the operation of the door handle by the occupant of the host vehicle M, and detects the opening operation of each door Md of the host vehicle M by the occupant. The door handle switch 15 supplies the door handle operation information to the controller 30. Note that the door handle switch 15 is always supplied with power regardless of whether the ignition switch 13 is ON or OFF so that the opening / closing information of the door Md of the host vehicle M can be always supplied.

  The rear monitoring camera 16 is a camera that is provided in the host vehicle M so that the rear of the host vehicle M can be monitored, and can continuously shoot a monitoring video behind the vehicle. The rear monitoring camera 16 supplies the captured monitoring video to the controller 30. It should be noted that the rear monitoring camera 16 always takes power regardless of whether the ignition switch 13 is ON or OFF so that the monitoring video behind the host vehicle M can be captured and the captured monitoring video can be supplied to the controller 30. Has been.

  The laser 21 is provided on both rear sides of the host vehicle M. The laser 21 is controlled by the controller 30 so that the driver of the other vehicle O can recognize the entry prohibition range A on the road surface with visible light that can be recognized by the driver of the other vehicle O on the rear side of the own vehicle M on the side where the other vehicle O approaches. To draw. The laser 21 always supplies power regardless of whether the ignition switch 13 is ON or OFF so that the entry prohibition range A can be drawn on the road surface on the rear side of the host vehicle M on the side on which the other vehicle O approaches. Has been.

The speaker 22 is controlled by the controller 30 and provides information on the other vehicle O to the passenger of the host vehicle M by voice. Note that the speaker 22 is always supplied with power regardless of whether the ignition switch 13 is on or off so that the passenger of the host vehicle M can provide information on the other vehicle O.
The controller 30 includes an input / output device, a storage device (ROM, RAM, nonvolatile RAM, etc.), a central processing unit, and the like. 1 includes a vehicle information acquisition unit (vehicle state detection unit, opening operation detection unit) 31 and a rear side monitoring unit (other vehicle detection unit) as processing function parts in the storage device and the central processing unit of the controller 30. (Means) 32, a determination unit (relative speed calculation unit, display range calculation unit) 33, and an information providing unit (control unit) 34 are shown in a block state. The controller 30 is always supplied with power regardless of whether the ignition switch 13 is turned on or off.

  Based on the vehicle speed detected by the vehicle speed sensor 11, the shift position information detected by the shift device 12, and the ON / OFF of the ignition switch 13, the vehicle information acquisition unit 31 is in a parked / stopped state. Whether or not each door Md of the host vehicle M is opened based on the opening / closing information of each door Md of the host vehicle M detected by the door switch 14. The door handle opening operation is detected based on the determination and the door handle operation information detected by the door handle switch 15. Then, the determination unit 33 supplies those determination results and detection results to the determination unit 33.

The rear side monitoring unit 32 monitors the presence or absence of the other vehicle O approaching the rear side of the host vehicle M based on the video of the rear monitoring camera 16. Then, the rear side monitoring unit 32 supplies the monitoring result to the determination unit 33.
Based on the determination result in the vehicle information acquisition unit 31 and the monitoring result in the rear side monitoring unit 32, the determination unit 33 is in a parked and stopped state and approaches the rear side of the own vehicle M. When there is another vehicle O to be operated, the position information of the other vehicle O and the relative speed V between the host vehicle M and the other vehicle O are calculated. Further, the determination unit 33 is based on the relative speed V between the host vehicle M and the other vehicle O and a predetermined time TTC which is a time required for the passenger of the host vehicle M stored in advance to complete the getting-off, The drawing distance X, which is the distance from the host vehicle M to the rear end Ae of the entry prohibition range A, is calculated. Further, the determination unit 33 opens the door Md on the side to which the other vehicle O approaches based on the determination result of the presence or absence of the opening of each door Md of the host vehicle M determined by the vehicle information acquisition unit 31. Or not. Then, the determination unit 33 supplies the position information of the other vehicle O and the drawing distance X to the information providing unit 34.

The information providing unit 34 controls the operation of the laser 21, and based on the drawing distance X supplied from the determination unit 33, the information providing unit 34 prohibits the entry to the road surface on the rear side of the own vehicle M on the side where the other vehicle O approaches. The range A is drawn with visible light. The information providing unit 34 controls the speaker 22 to provide information such as the position of the other vehicle O to the passenger of the host vehicle M.
A vehicle speed sensor 11, a shift device 12, an ignition switch 13, a door switch 14, a door handle switch 15, and a rear monitoring camera 16 are connected to the input side of the controller 30. On the other hand, a laser 21 and a speaker 22 are connected to the output side of the controller 30. The controller 30 determines whether the host vehicle M is parked or stopped based on output information from the vehicle speed sensor 11, the shift device 12, the ignition switch 13, the door switch 14, the door handle switch 15, and the rear monitoring camera 16. When the other vehicle O approaches from the rear side of M, the relative speed V between the own vehicle M and the other vehicle O and the time required for the passenger of the own vehicle M stored in advance to complete the disembarkation The entry prohibition range A determined by the predetermined time TTC is drawn on the road surface behind the own vehicle M on the side where the other vehicle O approaches by the visible light of the laser 21, and the passenger of the own vehicle M is drawn by the speaker 22. In this case, the getting-off support control for providing information such as the position of the other vehicle O is performed.

Hereinafter, the getting-off support control in the controller 30 according to the present invention configured as described above will be described.
FIG. 3 is a flowchart showing a control routine for getting-off support control in the controller 30 according to the present invention. This routine is always executed regardless of whether the vehicle is traveling or parked.

  As shown in FIG. 3, in step S10, it is determined whether or not the host vehicle M is parked or stopped. Specifically, based on the vehicle speed detected by the vehicle speed sensor 11, the shift position information detected by the shift device 12, and the ON / OFF of the ignition switch 13, the vehicle information acquisition unit 31 determines that the host vehicle M is It is determined whether the vehicle is parked or stopped. If the determination result is true (Yes) and the host vehicle M is parked, the process proceeds to step S12. If the determination result is false (No) and the host vehicle M is not parked or stopped, the process of step S10 is performed again.

  In step S12, it is determined whether or not another vehicle O exists behind the host vehicle M. Specifically, based on the video imaged by the rear monitoring camera 16, whether or not there is another vehicle O traveling behind the host vehicle M as shown in FIG. Is determined. If the determination result is true (Yes) and there is another vehicle O traveling behind the host vehicle M, the process proceeds to step S14. If the determination result is false (No) and there is no other vehicle O traveling behind the host vehicle M, the process returns to step S10.

  In step S14, the drawing distance X of the entry prohibition range A is calculated. Specifically, as shown in the following formula (1), the relative speed V between the host vehicle M and the other vehicle O and a predetermined time TTC which is a time required for the passenger of the host vehicle M stored in advance to complete the dismounting. Based on the above, the determination unit 33 calculates the drawing distance X, which is the distance from the host vehicle M to the rear end Ae of the entry prohibition range A. Then, the process proceeds to step S16.

Drawing distance X = relative speed V × predetermined time TTC (1)
It should be noted that the distance from the host vehicle to the rear end Ae of the entry prohibition range A, the drawing distance X, and the host vehicle M as the relative speed V between the host vehicle M and the other vehicle O increases as shown in Expression (1). It is calculated so that the distance to the rear end Ae of the entry prohibition range A becomes longer.
In step S16, it is determined whether or not the door Md is in an open state. Specifically, the opening / closing of the door Md is determined by the vehicle information acquisition unit 31 based on the opening / closing information of the door switch 14, and based on the determination result, the determination vehicle 33 on the side where the other vehicle O approaches It is determined whether or not the M door Md is open. If the determination result is true (Yes) and the door Md of the host vehicle M on the side to which the other vehicle O approaches is in an open state, the process proceeds to step S20. If the determination result is false (No) and the door Md of the host vehicle M on the side to which the other vehicle O approaches is not open, the process proceeds to step S18.

  In step S18, it is determined whether or not the door handle has been operated. Specifically, the vehicle information acquisition unit 31 determines the opening operation of the door handle based on the operation information of the door handle switch 15, and based on the determination result, the determination unit 33 determines whether the host vehicle M It is determined whether or not the M door handle has been operated. If the determination result is true (Yes) and the occupant of the host vehicle M is operating the door handle of the host vehicle M, the process proceeds to step S20. Further, if the determination result is false (No) and the occupant of the host vehicle M has not operated the door handle of the host vehicle M, the process returns to step S12.

In step S20, the entry prohibition range A is depicted. Specifically, the information providing unit 34 controls the operation of the laser 21 based on the drawing distance X calculated by the determination unit 33, and the road surface on the rear side of the host vehicle M on the side where the other vehicle O approaches. The entry prohibition range A, which is a range in which the own vehicle M and the other vehicle O cannot avoid a collision, is depicted with visible light. Then, the process proceeds to step S22.
In step S22, information on the other vehicle O is provided. Specifically, the information providing unit 34 controls the speaker 22 to provide information such as the presence of the other vehicle O approaching the host vehicle M and the vehicle speed to the passenger of the host vehicle M. Then, the process proceeds to step S24.

  In step S24, it is determined whether or not another vehicle O exists behind the host vehicle M. Specifically, whether or not there is another vehicle O traveling behind the host vehicle M in the rear side monitoring unit 32 based on the image taken by the rear monitoring camera 16 as in step S12. Is determined. If the determination result is true (Yes) and there is another vehicle O traveling behind the host vehicle M, the process proceeds to step S14. If the determination result is false (No) and there is no other vehicle O traveling behind the host vehicle M, the routine returns.

  Thus, the vehicle rear monitoring apparatus according to the present invention acquires the vehicle speed detected by the vehicle speed sensor 11, the shift position information detected by the shift apparatus 12, and the ON / OFF of the ignition switch 13. Based on the information, the vehicle information acquisition unit 31 determines whether the host vehicle M is parked or stopped or the host vehicle M is in a travelable state. If the host vehicle M is parked or stopped, the presence of the other vehicle O traveling behind the host vehicle M in the rear side monitoring unit 32 based on the image captured by the rear monitoring camera 16. Determine presence or absence. Then, when the existence of the other vehicle O traveling behind the host vehicle M is confirmed, the determination unit 33 draws based on the relative speed V between the host vehicle M and the other vehicle O and the predetermined time TTC. The distance X is calculated. When the determination unit 33 determines that the door Md of the host vehicle M is in the open state or the door handle is opened, the information is based on the drawing distance X calculated by the determination unit 33. When the providing unit 34 controls the operation of the laser 21 and enters the road surface on the rear side of the own vehicle M on the side where the other vehicle O approaches, the collision between the own vehicle M and the other vehicle O cannot be avoided. The entry prohibition range A, which is a range, is depicted with visible light. In addition, the information providing unit 34 controls the speaker 22 so as to provide information on the presence of the other vehicle O approaching the host vehicle M, the vehicle speed, and the like to the passenger of the host vehicle M.

Therefore, by drawing the entry prohibition range A on the road surface behind the own vehicle M on the side where the other vehicle O approaches, the driver of the other vehicle O traveling on the rear side of the own vehicle M is notified to the own vehicle M. It is possible to recognize that there is a possibility of a collision with the vehicle, and to promote traveling outside the entry prohibition range A.
Therefore, the display range in the width direction of the entry prohibition range A formed in a predetermined area, that is, the display range of the entry prohibition range A on the outer side in the width direction of the host vehicle M includes the fully open position of the door Md of the host vehicle M. Therefore, even if the vehicle M parks and stops and the occupant gets off, even if the door Md is fully opened, the other vehicle O is traveling outside the entry prohibition range A, and the occupant of the own vehicle Since there is no hindrance, the collision between the host vehicle M and the other vehicle O can be avoided without causing trouble to the occupant.

Further, in order to avoid a collision between the host vehicle M and the other vehicle O, the door lock or the like of the host vehicle M is operated to prevent the passenger from getting off, so that it is possible to eliminate annoyance to the passenger.
In addition, as the relative speed V between the host vehicle M and the other vehicle O increases, the entry prohibition range A is set so that the drawing distance X, which is the distance from the host vehicle M to the rear end Ae of the entry prohibition range A, increases. It is set and drawn with visible light on the road surface behind the host vehicle M on the side where the other vehicle O approaches.

For example, when the other vehicle O approaches the own vehicle M at a high vehicle speed from the rear side of the own vehicle M, the relative speed between the own vehicle M and the other vehicle O increases, and the own vehicle M and the other vehicle are increased. The period until the collision with O is shortened.
Therefore, when the relative speed V between the host vehicle M and the other vehicle O is large and the period until the other vehicle O collides with the host vehicle M is short, the rear end portion Ae of the entry prohibition range A and By drawing the entry prohibition range A so that the distance to the host vehicle M becomes longer, even if the other vehicle O is traveling at high speed, the driver of the other vehicle O is prohibited from entering early. By recognizing the range A and encouraging the other vehicle O to travel outside the entry prohibition range A, the collision between the host vehicle M and the other vehicle O can be avoided.

Further, when the approach of the other vehicle O is detected from the rear side of the own vehicle M, the presence of the other vehicle O is notified to the occupant of the own vehicle M, so that the occupant surely approaches the other vehicle O. Therefore, it is possible to avoid a collision with another vehicle O caused by the occupant opening the door Md of the host vehicle M.
This is the end of the description of the embodiment of the present invention. However, the embodiment of the present invention is not limited to the above embodiment.

  In the above embodiment, when the other vehicle O approaches from the rear side of the host vehicle M and the door Md of the host vehicle M is opened or the door handle is opened, the host vehicle M on the side to which the other vehicle O approaches. Although the entry prohibition range A is drawn on the rear side of the vehicle and information on other vehicles O approaching the occupant is provided, of course, the present invention is not limited to this. A door lock device (door lock means) to be operated is provided. In addition to drawing the entry prohibition range A and providing information on the other vehicle O, the other vehicle O enters the entry prohibition range A, and the host vehicle M When the door handle is operated by an occupant to open the door on the side on which the other vehicle O approaches, the door lock device of the own vehicle M on the side on which the other vehicle O approaches is operated to lock the door, For example, the driver of another vehicle O enters the entry prohibition range A Even if the other vehicle O travels in the entry prohibition range A without noticing, and the occupant of the host vehicle M does not notice the approach of the other vehicle O and opens the door Md on the side on which the other vehicle O approaches, the door Md Is locked, it is possible to prevent a collision between the host vehicle M and the other vehicle O due to a sudden opening operation of the door Md.

In addition, the laser 21 draws the entry prohibition range A on the road surface. Of course, the method is not limited to this, and any method can be used as long as the entry prohibition range A can be displayed on the road surface. May be.
In addition, although the rear monitoring camera 16 monitors the other vehicle O behind the host vehicle M, it is of course not limited to this, and the other vehicle O may be monitored by a radar or the like. .

DESCRIPTION OF SYMBOLS 1 Vehicle rear monitoring apparatus 11 Vehicle speed sensor (vehicle state detection means)
12 Shift device (vehicle state detection means)
13 Ignition switch (vehicle state detection means)
15 Door handle switch (opening operation detection means)
16 Rear surveillance camera (other vehicle detection means)
21 Laser (display means)
22 Speaker (notification means)
30 controller 31 vehicle information acquisition unit (vehicle state detection means, opening operation detection means)
32 Rear side monitoring unit (other vehicle detection means)
33 determination section ( relative speed calculation means, display range calculation means )
34 Information provision part (control means)

Claims (3)

Vehicle state detection means for detecting the vehicle state of the host vehicle;
An opening operation detecting means for detecting an opening operation of each door of the host vehicle;
Other vehicle detection means for detecting the other vehicle on the rear side of the host vehicle;
Display means for displaying an entry prohibition range formed in a predetermined area on the road surface on the rear side of the host vehicle;
Control means for controlling the operation of the display means based on detection results of the vehicle state detection means, the opening operation detection means, and the other vehicle detection means;
A relative speed calculation means for calculating a relative speed between the host vehicle and the other vehicle based on a detection result of the other vehicle detection means;
Based on the relative speed calculated by the relative speed calculation means and a predetermined time that is a period necessary for the passenger of the host vehicle to complete the getting-off, a rear end portion of the entry prohibition range from the host vehicle. Display range calculation means for calculating the distance to ,
The display means can change the display position of the rear end of the entry prohibition range with respect to the host vehicle,
The control means detects the parking / stopping state of the own vehicle by the vehicle state detection means, detects approach of the other vehicle from the rear side of the own vehicle by the other vehicle detection means, and further opens the opening. When the operation detecting means detects the opening operation of the door on the side approaching the other vehicle, the entry means enters the road surface on the rear side of the own vehicle on the side approaching the other vehicle. The prohibition range is displayed , and the operation of the display unit is controlled according to the distance from the host vehicle calculated by the display range calculation unit to the rear end portion of the entry prohibition range. A vehicle rear monitoring device. Informing means for informing the passenger of the own vehicle of the presence of the other vehicle,
2. The vehicle according to claim 1, wherein the control unit operates the notifying unit when the approach of the other vehicle is detected from the rear side of the own vehicle by the other vehicle detection unit. Rear monitoring device. Door locking means for locking each of the doors,
The control means is configured such that the other vehicle detected by the other vehicle detecting means enters the entry prohibition range, and the opening operation detecting means is configured to open the door on the side where the other vehicle approaches. Once detected, characterized by locking the door of the approaching sides of the other vehicle in the door locking means, the vehicle rear monitoring system according to claim 1 or 2.

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