JP2004148901A - Parking support device for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To exactly and easily stop a vehicle at an initial position for parking at a target parking position. <P>SOLUTION: A camera is provided on a door mirror 11 and a parking frame line A is photographed in the state that the door mirror is opened. Since the photographed image and a first guide line are indicated on an indoor display, a driver brings the vehicle 10 to the state parallel to and offset from by a predetermined distance the parking frame line A based on the photographed image and the first guide line. Since the parking frame line B photographed in the state that the door mirror is accommodated and a second guide line are indicated on the display, the driver can easily stop the vehicle 10 at the initial position based on the photographed image and the second guide line. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a device that assists a driver in parking operation.
[0002]
[Prior art]
Parking assist systems that support parallel parking and parallel parking can be roughly classified into the following two types based on the initial position of the vehicle at which assistance is started and the steering method.
(1) There is a certain degree of freedom in the initial position of the vehicle, and a method of parking by adjusting the steering angle of the steering according to the target parking frame. (2) There is almost no freedom in the initial position of the vehicle. How to park by fully turning the steering wheel after stopping
According to the method (1), even if the initial position is slightly out of the recommended position, the vehicle can be accommodated in the target parking frame by adjusting the steering angle of the steering. In some cases, a larger parking space may be required, and it may be difficult for a beginner to reverse while maintaining a constant steering angle. On the other hand, in the method (2), since the steering is fully steered and the vehicle is moved backward, the above-mentioned problem does not occur, but high accuracy is required in determining the initial position.
[0004]
For this reason, there is a conventional parking assist device in which a mark serving as a mark is provided on a window frame of a driver's seat or a passenger seat, and the mark is aligned with a parking frame line, thereby increasing the accuracy of determining the initial position.
[0005]
[Patent Document 1]
Japanese Patent Application Laid-Open No. 2000-118334
[Problems to be solved by the invention]
However, in the conventional parking assist device, since the position of the mark viewed from the driver changes depending on the seat position, there is a problem that the initial position varies, and the vehicle cannot fit in the parking frame.
[0007]
An object of the present invention is to provide a vehicular parking assist device that enables easy parking by using a camera built in a door mirror.
[0008]
[Means for Solving the Problems]
The vehicle parking assist device according to the present invention assists stopping the vehicle at an initial position for parking the vehicle at a target parking position located on the side of the vehicle, and is built in a door mirror to at least park the target parking position. The object is achieved by providing a photographing device for photographing the vicinity of a position and a display device for displaying a guideline for determining an initial position together with an image photographed by the photographing device.
[0009]
【The invention's effect】
According to the vehicular parking assist device according to the present invention, the image captured by the image capturing device built in the door mirror and the guideline for determining the initial position are displayed on the display device. The vehicle can be accurately stopped at the initial position while viewing the displayed image and the guideline.
[0010]
BEST MODE FOR CARRYING OUT THE INVENTION
FIG. 1 is a diagram showing a configuration in one embodiment of a vehicular parking assistance device according to the present invention. The vehicle parking assist device according to one embodiment includes a display 1, a navigation device 2, a parking assist system controller 3, a camera 4 with a built-in door mirror, a parking assist switch 5, a door mirror storage device 6, and a speaker 7. Prepare.
[0011]
The camera 4 with a built-in door mirror is a camera built in the side opposite to the mirror surface of a door mirror (not shown). (See FIG. 2). The captured video is sent to the parking assist system controller 3. The parking assist switch 5 is a switch for starting a parking assist operation, and is operated by an occupant in the vehicle such as a driver. The parking assist switch 5 needs to be provided at a position where the driver can operate it. However, if the parking assist switch 5 is provided at the steering wheel, the driver can easily operate the parking assist switch 5.
[0012]
The parking assist system controller 3 transmits a command to switch the content of the screen displayed on the display 1 to the navigation device 2 based on the operation of the parking assist switch 5 by the occupant, and displays the image captured by the door mirror built-in camera 4 on the display 1. Output to Further, the parking assist system controller 3 controls the door mirror storage device 6 based on the operation of the parking assist switch 5 by the operator. A detailed control method will be described later.
[0013]
The navigation device 2 has a function of presenting information related to the traveling of the vehicle, specifically, a function of displaying a road map around the vehicle position, a function of calculating a recommended route from a departure place to a destination, and a calculated recommended route. It also has a function of performing route guidance based on the information. When a command for switching the content of the screen displayed on the display 1 is transmitted from the parking assist system controller 3, the navigation device 2 switches the video input to the display 1. In addition, the navigation device 2 uses the speaker 7 to output a guide voice for parking assistance.
[0014]
As described above, when the parking assist switch 5 is operated, the display 1 displays an image captured by the camera 4 with a built-in door mirror. At this time, since the guideline for assisting the parking operation of the vehicle is also displayed on the display 1, the driver can perform the parking operation of the vehicle based on the captured image and the guideline.
[0015]
FIG. 2 is a diagram for explaining a procedure until the initial position of the vehicle is determined when the vehicle 10 is parked in the parking lot on the left side in the traveling direction. When the initial position of the vehicle is accurately determined, the driver only needs to reverse the vehicle with the steering wheel fully steered (in this case, full steering to the left). FIG. 3 shows the operation state of the parking assist switch 5 and the display on the display 1 at each stage from the start of the parking assist operation by the vehicle parking assist device in the present embodiment to the stop of the vehicle at the initial position. The table shows the video content, the state of the door mirror, and the vehicle position. Hereinafter, a procedure until the vehicle is stopped at the initial position will be described with reference to FIGS.
[0016]
The driver of the vehicle 10 looks at the target parking frame 20 diagonally to the left and pushes the parking assist switch 5 when reaching the position (1) in FIG. 2 (step (1) in FIG. 3). As a result, a command to switch the display screen is sent from the parking assist system controller 3 to the navigation device 2, so that the display 1 displays an image captured by the camera 4 with a built-in door mirror. When the vehicle is running, the door mirror 11 is used in a non-retracted state, so that the display 1 displays a photographed image in the non-retracted state of the door mirror 11. An image displayed on the display 1 is shown in FIG. As shown in FIG. 4A, the guideline L1 for stopping the vehicle in parallel with the parking frame line A and at a predetermined distance is displayed on the display 1 together with the parking frame line A. I have. Note that the parking frame line A is a line for distinguishing between a parking space and a vehicle traveling path, as shown in FIG.
[0017]
The driver operates the steering wheel so that the guide line L1 displayed on the display 1 matches the parking frame line A. When the guide line L1 matches the parking frame line A, the vehicle 10 is in a state parallel to the parking frame line A and separated by a predetermined distance. In this state, the driver moves the vehicle 10 to near the position (2) in FIG. 2 is an initial position with respect to the target parking frame 20. If the driver moves the vehicle 10 straight to the vicinity of the position (2), using the parking frame line on the back side of the target parking frame 20, that is, the frame line B located on the left side of the vehicle 10 when parking is completed, as a mark. Good.
[0018]
When the driver moves the vehicle 10 to the vicinity of the position (2) in FIG. 2, the driver presses the parking assist switch 5 (step (2) in FIG. 3). Thereby, the parking assist system controller 3 controls the door mirror storage device 6 to store the door mirror 11. In addition, an image captured by the camera 4 with a built-in door mirror in a state where the door mirror 11 is stored is displayed on the display 1. FIG. 4B shows an image captured with the door mirror 11 stored and displayed on the display 1.
[0019]
FIG. 4B shows a guide line L2 for accurately stopping the vehicle 10 at the initial position together with the parking frame line A and the parking frame line B. The driver moves the vehicle 10 so that the guide line L2 displayed on the display 1 matches the parking frame line B (step (3) in FIG. 3), and stops the vehicle 10 when both lines match. The position where the guide line L2 coincides with the parking frame line B is the initial position of the vehicle. In this case, the driver does not need to operate the steering wheel, and may adjust the guide line L2 and the parking frame line B by moving the vehicle in the front-rear direction. When the guide line L2 matches the parking frame line B, the driver presses the parking assist switch 5 (step (4) in FIG. 3). Thus, the parking assist system controller 3 controls the door mirror storage device 6 to return the door mirror 11 to the opened state (non-retracted state) again.
[0020]
Thereafter, the driver can put the vehicle 10 in the target parking frame 20 by retreating the vehicle 10 while turning the steering wheel all the way to the left. That is, the driver can accurately and easily stop at the initial position for parking in the target parking space by using the vehicle parking assist device according to the present embodiment. After that, the vehicle can be easily parked in the target parking space only by retreating while fully steering the steering wheel.
[0021]
In a conventional vehicle parking assist device, a mark serving as a mark is provided on a window frame of a driver's seat or a passenger's seat, so that the view of the mark may change depending on a driver's seat position. According to the vehicular parking assist device, the captured image and the guide line are displayed on the display 1 in a superimposed manner. In addition, in the method of providing a mark on the window frame, the interior of the vehicle may be impaired. However, in the vehicle parking assist device according to the present embodiment, the guideline is displayed on the display 1 when the vehicle is parked. Nor.
[0022]
When the vehicle 10 is moved to the vicinity of the initial position, the door mirror 11 is over the parking frame line B. Therefore, when the door mirror 11 is in a normal use state, the parking mirror line B is photographed using the camera 4 with a built-in door mirror. Can not do it. However, in the vehicle parking assist device according to the present embodiment, when the vehicle 10 is moved to near the initial position, the driver pushes the parking assist switch 5 to retract the door mirror 11. Thereby, the parking frame line B can be photographed using the camera 4 with a built-in door mirror. That is, in order to move the vehicle 10 to a position separated by a predetermined distance in parallel with the parking frame line A and then stop at the initial position, the parking frame line A must be photographed at the position (1) in FIG. Then, it is necessary to photograph the parking frame line B at the position (2). However, according to the vehicular parking assist device of the present embodiment, the parking frame line A and the parking frame line B are obtained by using one camera. Can be taken. Therefore, there is no need to provide two cameras, and even when one camera is used, it is not necessary to newly provide a control device for changing the direction of the camera.
[0023]
In the vehicle parking assist device according to the present embodiment, when parking assist switch 5 is pressed after stopping vehicle 10 at the initial position, door mirror 11 is returned to the original non-storing state. This allows the driver to retreat little by little while looking at the door mirror 11 and check the timing of returning the fully steered steering to a straight position and the position at which the vehicle 10 is stopped in the target parking frame 20. it can.
[0024]
The present invention is not limited to the above embodiment. For example, in the above-described embodiment, a case has been described in which the camera 4 built in the door mirror 11 on the left side of the vehicle 10 is used to park in the target parking frame 20 on the left side of the vehicle 10. It can also be parked in the target parking frame on the right side of the vehicle using the camera.
[0025]
The correspondence between the components of the claims and the components of the embodiment is as follows. That is, the camera 4 with a built-in door mirror constitutes a photographing device, the display 1 constitutes a display device, the door mirror storage device 6 constitutes a door mirror control device, and the parking assist switch 5 constitutes a parking assist switch. Note that each component is not limited to the above configuration as long as the characteristic functions of the present invention are not impaired.
[Brief description of the drawings]
FIG. 1 is a diagram showing a configuration of an embodiment of a vehicle parking assistance device according to the present invention; FIG. FIG. 3 shows the operation of the parking assist switch until the vehicle stops at the initial position, the contents of the screen displayed on the display, the state of the door mirror, and the position of the vehicle. FIG. 4B is a diagram showing a video taken with the door mirror not stored, and FIG. 4B is a diagram showing a video taken with the door mirror stored.
DESCRIPTION OF SYMBOLS 1 ... Display, 2 ... Navigation device, 3 ... Parking assist system controller, 4 ... Camera with built-in door mirror, 5 ... Parking assist switch, 6 ... Door mirror storage device, 10 ... Vehicle, 11 ... Door mirror, 20 ... Target parking frame, L1, L2: Guidelines

Claims (7)

In a vehicle parking assist device that assists stopping the vehicle at a vehicle initial position for parking the vehicle at a target parking position on the side of the vehicle,
A photographing device built in a door mirror and photographing at least the periphery of the target parking position;
A display device for displaying a guideline for determining the initial position together with an image captured by the imaging device. The vehicle parking assist device according to claim 1,
A door mirror control device for controlling storage / non-storage of the door mirror;
The display device displays an image photographed by the photographing device when the door mirror is not stored and the first guideline, and is photographed by the photographing device in a state where the door mirror is stored by the door mirror control device. A parking assist device for a vehicle, wherein a video and a second guideline are displayed. The vehicle parking assist device according to claim 2,
The vehicle further includes a parking assist switch operated by an occupant of the vehicle,
When the parking assist switch is operated, the display device displays an image photographed by the photographing device when the door mirror is not retracted and the first guideline. The vehicle parking assist device according to claim 3,
The first guideline is a mark for setting a predetermined distance between the target parking position and a side of the vehicle. The parking assist device for a vehicle according to claim 3 or 4,
When the parking assist switch is operated again after the first guideline is displayed on the display device, the door mirror control device stores the door mirror,
The vehicle parking assist device, wherein the display device displays an image photographed by the photographing device in a state where the door mirror is stored and the second guideline. The parking assist device for a vehicle according to any one of claims 2 to 5,
The second guideline is a mark for stopping the vehicle at the initial position. The parking assist device for a vehicle according to any one of claims 3 to 6,
The vehicle wherein the door mirror control device returns the stored door mirror to a non-retracted state when the parking assist switch is further operated after the second guideline is displayed on the display device. Parking assist device.

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