JP4078948B2 - Parking assistance device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention belongs to the technical field of a parking assistance device that assists a driver's parking operation.
[0002]
[Prior art]
As this type of technology, for example, the one described in JP-A-2002-29350 is known. In this conventional publication, the current position of the vehicle on the target parking lot is detected based on the image of the target parking lot captured by the camera attached to the vehicle and the image of the vehicle traveling direction, and the image of the own vehicle is obtained. A technique for synthesizing and displaying the image on the target parking lot is described. According to this prior art, the driver can easily grasp the positional relationship between the vehicle that is difficult to visually recognize and the environment behind the vehicle, and the driver's parking operation can be assisted.
[0003]
[Problems to be solved by the invention]
However, in the above prior art, the configuration is intended to allow the driver to easily grasp the positional relationship between the host vehicle and the environment behind the host vehicle, and provides parking support in consideration of the passengers' getting-off space. It wasn't.
[0004]
The present invention has been made paying attention to the above-mentioned problems, and the object of the present invention is to easily recognize the positional relationship between the getting-off width displayed on the outside of the vehicle width extension line and the parking frame, and for the passenger to get off. An object of the present invention is to provide a parking assist device that can easily perform parking with a required getting-off width.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, in the present invention, a parking lot imaging means mounted on a vehicle for imaging a target parking lot, an image processing means for synthesizing a vehicle width extension line on the imaged target parking lot, and synthesis And a monitor display means for displaying the captured image to the occupant, the occupant position detection means for detecting the position of the occupant is provided, and the image processing means detects the occupant only on the driver's seat side of the vehicle. The vehicle width extension line on the driver's seat side and a predetermined getting-off width that is outside the vehicle width extension line and that is necessary for the passenger to get off are superimposed and displayed on the monitor display means, When the vehicle is also detected on the passenger seat side, the vehicle width extension line on the driver seat side and the vehicle width extension line on the passenger seat side are superimposed on the monitor display means .
[0006]
Therefore, in the parking assistance device of the present invention, when the occupant is only on the driver's seat side of the vehicle, the driver's vehicle width extension line and the getting-off width are superimposed on the monitor means. Therefore, the driver can easily recognize the positional relationship between the dismounting width displayed on the outside of the vehicle width extension line and the parking frame, and can easily secure the width necessary for dismounting.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment for realizing a parking assistance device of the present invention will be described with reference to the drawings.
First, the configuration will be described.
FIG. 1 is a system configuration diagram of a parking assistance device.
[0008]
In the figure, 1 is a monitor, 2 is an IR sensor, 3 is an input device, 4 is a processing device, and 5 is a rear view camera.
[0009]
The monitor 1 is provided in the vehicle interior and displays a rear image of the vehicle imaged by the rear view camera 5 and also superimposes a line extending the vehicle width, a parking method, and the like on the rear image.
[0010]
The IR (infrared) sensor 2 senses heat generated by the human body.
[0011]
The input device 3 inputs the shift position and the state of the one-way parking switch operated by the driver to the processing device 4. The input device 3 receives a range signal output from an inhibitor switch provided on a select lever (not shown) and an ON / OFF signal from a one-way parking switch.
[0012]
The processing device 4 recognizes the seat of the occupant from the output signal of the IR sensor 2. Further, based on the recognition result, a determination is made to determine the parking position of the own vehicle or to overwrite the space for the door opening on the driver seat side of the vehicle width extension line.
[0013]
The rear view camera 5 is provided at the rear of the vehicle, images the rear of the vehicle, and outputs a rear image to the processing device 4.
[0014]
Next, the operation will be described.
[Parking assistance control processing]
FIG. 2 is a flowchart showing a flow of parking support control processing executed by the processing device 4. Hereinafter, each step will be described.
[0015]
In step S1, it is determined from the range signal of the inhibitor switch whether or not the R range is selected. If the R range is selected, the process proceeds to step S2, and otherwise, the process returns to step S1.
[0016]
In step S2, the rear view camera 5 is turned on.
[0017]
In step S3, a rear image of the vehicle is displayed on the monitor 1.
[0018]
In step S4, occupant position detection control is performed. Details of this control will be described later.
[0019]
In step S5, it is determined whether or not the portion extending from the vehicle width (driver's seat side door opening space) is displayed in a superimposed manner on the vehicle width extension line. If the driver's seat side door opening space is displayed in a superimposed manner, the process proceeds to step S6. When only the vehicle width extension line is displayed, the process proceeds to step S7.
[0020]
In step S6 , the driver side door opening space when the driver side door is opened is displayed superimposed on the rear image. As shown in FIG. 3, the driver's seat side door opening space 11 is displayed as a set together with the vehicle width extension line 10 in step S7 described later.
[0021]
In step S7, as shown in FIG. 4, a vehicle width extension line 10 representing the vehicle width of the host vehicle is superimposed on the rear image.
[0022]
In step S8, the end of parking, that is, whether or not the P range is selected is determined from the range signal of the inhibitor switch. If the P range is selected, this control is terminated. Otherwise, the process returns to step S2.
[0023]
[Occupant position detection control process]
FIG. 5 is a flowchart showing the flow of the occupant position detection control process executed by the processing device 4. Hereinafter, each step will be described.
[0024]
In step S401, it is determined from the information registered in advance in the memory of the vehicle whether the type of the host vehicle 13 is Type A or Type B. In the case of Type A, the process proceeds to step S402, and in the case of Type B, the process proceeds to step S405. Type A is a non-sliding door vehicle with four front and rear doors, such as a 4-door sedan or a 5-door station wagon. Type B is a vehicle in which two doors for getting on and off the front seats are non-sliding doors and sliding doors are provided on both sides or one side as seen in many one-box vehicles. When getting in and out of the sliding door, it is not necessary to leave a large space.
[0025]
In step S402, it is determined from the ON / OFF signal of the one-way parking switch whether the driver wants to park the own vehicle 13 on one side of the parking space. If the one-way parking switch is ON, the process proceeds to step S403, and if OFF, the process proceeds to step S404.
[0026]
In step S403, based on the detection result of the IR sensor 2, it is determined whether there are passengers in the front and rear seats on the passenger seat side. If it is determined that an occupant is present, the process proceeds to step S404. If it is determined that no occupant is present, the process proceeds to step S407.
[0027]
An example of a passenger detection result using the IR sensor 2 is shown in FIG. As shown in the figure, by looking at the surface temperature distribution of the human body, it can be determined whether the occupant is on the left or right side of the vehicle.
[0028]
In step S404, a result of superimposing and displaying the vehicle width extension line 10 is output.
[0029]
In step S405, it is determined from the ON / OFF signal of the side-by-side parking switch whether the driver desires to park the vehicle 13 at one side of the parking space. When the one-way parking switch is ON, the process proceeds to step S406, and when it is OFF, the process proceeds to step S404.
[0030]
In step S406, based on the detection result of the IR sensor 2, it is determined whether there are passengers in the front and rear seats on the passenger seat side. If it is determined that an occupant is present, the process proceeds to step S404. If it is determined that no occupant is present, the process proceeds to step S407. In the case of Type B, since the rear seat is a sliding door, a large clearance is not required when the passenger in the rear seat gets on and off.
[0031]
In step S407, the vehicle width extension line 10 + the driver's seat side door opening space 11 is displayed in a superimposed manner.
[0032]
Next, the effect will be described.
When the occupant position is detected by the IR sensor 2 and the occupant is detected only on the driver's seat side, the driver's seat side door opening space 11 is superimposed on the vehicle width extension line 10, which is necessary for the passenger to get off. Parking that secures the width of getting off can be performed easily. For example, in FIG. 7, when one driver is on board, the vehicle width extension line 10 + the driver's seat side door opening space 11 are superimposed and parked at a position where there is a margin in the driver's seat side clearance. It becomes easier to do and getting on and off is much easier.
Considering that most parking slots in Japan are about 2.5m wide and many passenger cars are about 1.7m wide, parking with some clearance on the driver side is It cannot be an obstacle to parking other vehicles.
[0033]
As described above, the parking assistance of the present invention has been described based on the embodiment. However, the specific configuration is not limited to the embodiment, and departs from the gist of the invention according to each claim of the claims. Unless otherwise, design changes and additions are permitted.
[Brief description of the drawings]
FIG. 1 is a system configuration diagram of a parking assistance device.
FIG. 2 is a flowchart showing a flow of a parking support control process executed by the processing device.
FIG. 3 is a diagram showing a state in which a vehicle width extension line and a line representing a driver's seat side door opening space are superimposed and displayed on a monitor.
FIG. 4 is a diagram showing a state in which only a line representing a vehicle width extension line is displayed on a monitor.
FIG. 5 is a flowchart showing a flow of occupant position detection control processing executed by the processing device.
FIG. 6 is a diagram showing an example of an occupant detection result using an IR sensor.
FIG. 7 is a diagram illustrating an effect of the embodiment.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Monitor 2 IR sensor 3 Input device 4 Processing device 5 Rear view camera 10 Car width extension line 11 Driver side door opening space

Claims (1)

A parking lot imaging means mounted on the vehicle for imaging the target parking lot;
Image processing means for synthesizing a vehicle width extension line on the captured image of the target parking lot;
Monitor display means for displaying the synthesized video to the occupant;
In the parking assistance device provided with
An occupant position detection means for detecting the position of the occupant is provided,
When the occupant is detected only on the driver's seat side of the vehicle, the image processing means is provided with a vehicle width extension line on the driver's seat side and a predetermined getting-off width necessary for the occupant to get off the vehicle outside the vehicle width extension line. Are superimposed on the monitor display means, and when the passenger is detected also on the passenger side of the vehicle, the vehicle width extension line on the driver seat side and the vehicle width extension line on the passenger seat side are superimposed on the monitor display means. A parking assistance device characterized by displaying .

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