Patent Application
20180129218
The present invention relates to an automatic parking apparatus configured to move a vehicle to a parking space through an operation conducted inside the vehicle, a parking guidance apparatus configured to move a vehicle through a remote operation conducted outside the vehicle, and methods therefor.
Hitherto, a vehicle recognizes an entrance of a parking section designated by an entrance designation indication, e.g., a marker. Further, the vehicle calculates a traveling track of the own vehicle to be required until the vehicle reaches a parking space, i.e., a parking area, after passing through the entrance. In the related art, the vehicle is automatically moved to the parking area along the traveling track by controlling a travel driving force, a braking force, steering, and an automatic transmission of the own vehicle.
The marker provided in the parking lot and formed of, for example, a white line within the parking lot, is recognized by a marker recognition device, and the vehicle is automatically moved to a predetermined parking area through the recognition of the marker. For example, in Japanese Patent Application Laid-open No. Hei 10-269497, the marker provided in the parking lot is used to set a target parking section, and the vehicle is moved or guided to the target parking section.
The above-mentioned automatic parking apparatus of Japanese Patent Application Laid-open No. Hei 10-269497 cannot be used in a parking lot where the marker, e.g., the white line, is not provided to the parking space. That is, the vehicle cannot be moved or guided to a space in which a user wishes to park the vehicle irrespective of whether or not the marker is provided in the parking lot.
The present invention has been made in order to solve the above-mentioned problem, and has an object to provide an automatic parking apparatus, a parking guidance apparatus, and methods therefor, which are capable of easily setting a target parking area and moving or guiding a vehicle to the target parking area.
According to one embodiment of the present invention, there are provided an automatic parking apparatus and the like, including: a monitor device configured to photograph surroundings of an own vehicle; an image display device including: a display screen configured to display an image obtained through the photographing by the monitor device; an image generation unit configured to generate an image to be displayed on the display screen from the image obtained through the photographing, and to display the image; and an input device; and a vehicle control device configured to control the own vehicle to move to a parking area designated, which is designated through the input device with respect to the displayed image.
According to the present invention, it is possible to easily set the target parking area and move or guide the vehicle to the target parking area.
Now, an automatic parking apparatus and a parking guidance apparatus according to embodiments of the present invention are described referring to the accompanying drawings. In the respective embodiments, the same components or corresponding components are denoted by the same reference symbols, and the overlapping description thereof is herein omitted.
In a first embodiment of the present invention, a description is made of an operation of the automatic parking apparatus configured to display an image, which is obtained through photographing by a monitor device configured to photograph surroundings of an own vehicle, on a display screen inside the own vehicle, and move the own vehicle to a target parking area designated within the image by a user.
A monitor device 1 is mounted to a vehicle, and is configured to photograph the surroundings of the own vehicle.
An image display device 2 is configured to display an image obtained through the photographing by the monitor device 1, and to receive an input operation from the user.
A vehicle control device 3 is configured to control the own vehicle based on the input operation received from the user.
The image display device 2 includes: an image generation unit 21 configured to convert the image obtained through the photographing by the monitor device 1 into a bird's-eye view image; a display screen 2a configured to display the generated image; and an input device 2b configured to receive, for example, the input operation for the target parking area from the user.
The vehicle control device 3 includes: a moving path calculation unit 31 configured to calculate a moving path of the vehicle from a relationship between an own vehicle location area at present, that is, at a start time of a parking operation and the target parking area based on the input operation for the target parking area received from the user; and a vehicle control processing unit 32 configured to control the driving of the vehicle based on the calculated moving path. It is assumed here that the target parking area and the own vehicle location area at the start time of the parking operation each have an area and a shape corresponding to the shape of a target vehicle.
In
First, the monitor device 1 mounted to the own vehicle photographs a surrounding environment of the own vehicle (Step ST101). The monitor device 1 aims at photographing the surroundings of the vehicle and presenting the surrounding environment around the own vehicle to the user as the bird's-eye view image. Therefore, not only one camera but a plurality of cameras may be mounted.
The image data obtained through the photographing is input to the image generation unit 21 to generate the bird's-eye view image (Step ST102). Examples of a method of generating the bird's-eye view image include a method of deforming the respective images obtained through the photographing by cameras, which are mounted at four spots on the front, rear, left, and right sides of the vehicle, based on a transformation corresponding to mounted positions of the cameras, and further joining the images, to thereby generate the bird's-eye view image. Such a monitor device is known as a multi-angle around-view monitor, and, for example, there is obtained an around-view image in which the own vehicle location area is at the center of the image.
The generated bird's-eye view image is input to the display screen 2a, and displayed so as to be able to be confirmed by the user (Step ST103). In this manner, the image obtained through the photographing by the monitor device 1 is constantly updated in real time. In this case, the bird's-eye view image is displayed as illustrated in, for example,
In this case, when the user wishes to automatically park the vehicle to a desired area on the display screen 2a, the user conducts an input operation on the image display device 2 through use of the input device 2b (Step ST104). The input device 2b may be, for example, a transparent touch panel formed on the display screen 2a or an operation button existing separately from the display screen 2a. As an input method, the touch operation may be conducted for a button OPB displayed on the touch panel, which is representatively illustrated in
When the input is started, the image generation unit 21 shifts to a user operation mode (Step ST105), and prompts the user to designate the target parking area through, for example, dedicated display on the display screen 2a.
After that, the image generation unit 21 continues to receive an operation for designating the target parking area from the user until an input completion operation is conducted (Step ST106).
As an operation for inputting the target parking area conducted in this case, there is a method of drawing a rectangle based on the user's touch operation conducted for the touch panel on the display screen 2a as indicated by the broken line PA in
There is also another method of moving an own vehicle location area mark indicating the own vehicle location area CPA displayed at the center of the bird's-eye view image through a slide operation, namely, a dragging operation, as indicated by the arrow DRA in
When the method illustrated in
The area satisfying the preset condition used in this case means that, in terms of a lateral direction of the vehicle, for example, a central line of the parking area PA along a longitudinal direction of the vehicle is set to match a center line of the parking frame PF along a parking direction of the vehicle. The above-mentioned area also means that, in terms of the longitudinal direction of the vehicle, for example, a center line of the parking area PA along the lateral direction of the vehicle is set to match the center line of the parking frame PF along a direction perpendicular to the parking direction of the vehicle. In this case, as a method of obtaining a position of the center line of the parking area PA along the lateral direction of the vehicle, there is a method of calculating the position through use of a width of PA and an aspect ratio of CPA. As another method, the center line of the parking area PA may be set so as to deviate from the center line of the parking frame PF by a preset amount in each of the lateral direction and the longitudinal direction of the vehicle. A reference line is not limited to the center line, and a reference line along any one of left and right ends or a reference line along any one of front and rear ends may be set.
When the user conducts the input completion operation, the image generation unit 21 determines that the input has been completed (Step ST107). It is assumed that the input completion operation is conducted in this case when, for example, the user's finger is lifted off the touch panel during the above-mentioned operation. In another case, for example, the user may touch a displayed completion button OBP to complete the input.
When the parking area PA is designated by the user's completion of the input, coordinate information on the own vehicle location area CPA and the designated parking area PA on the screen are input from the image generation unit 21 to the moving path calculation unit 31 of the vehicle control device 3, and the moving path is estimated (Step ST108). In processing for estimating the moving path conducted above, the moving path is estimated from a vehicle size of the own vehicle, a turnable radius thereof, and the like in addition to a positional relationship between the coordinate information on the own vehicle location area CPA and the designated parking area PA on the screen.
In
As a broad outline, for example, the above-mentioned coordinate information on the own vehicle location area CPA and the designated parking area PA on the screen, the longitudinal and lateral lengths of the own vehicle, namely, the vehicle size defined by the length and the width, the turnable radius thereof, a preset speed pattern of the vehicle at the time of the parking operation, and other such information are used. The moving path MP is estimated by moving the vehicle so that a center line L1 of the vehicle within the own vehicle location area CPA matches a center line L2 of the parking area PA along the parking direction of the vehicle. In this case, the estimation is conducted in consideration of a range that allows the own vehicle to move based on the information on the vehicle size, the turnable radius, and the like of the own vehicle described above. In terms of the location of the vehicle within the parking area PA along the longitudinal direction, the estimation is conducted so that a center line L3 of the vehicle along the lateral direction matches a center line L4 of the vehicle within the parking area PA along a direction perpendicular to the parking direction of the vehicle. In this case, it is determined based on the positional relationship between the own vehicle location area CPA at the start time of the operation and the parking area PA whether the vehicle needs to be turned back once after being moved forward first or the vehicle can be parked only by moving backward from the beginning. After that, the center lines are gradually caused to match each other in accordance with the speed pattern of the vehicle at the time of the parking operation.
The reference line is not limited to the center line, and, for example, the reference line along any one of the left and right ends or the reference line along any one of the front and rear ends may be set.
The moving path MP estimated in this manner is transmitted from the moving path calculation unit 31 to the image generation unit 21, and displayed on the display screen 2a for the user by the image generation unit 21 (Step ST109). When there are a plurality of moving paths MP, the plurality of moving paths MP are displayed so as to be selectable by the user. For example, as illustrated in
The user designates a desired path from the displayed paths through the input device 2b (Step ST110).
When the moving path MP is designated in this manner, an input signal based on the designation is input to the moving path calculation unit 31, and the moving path MP is determined (Step ST111).
The moving path MP is further input to the vehicle control processing unit 32, and the own vehicle is controlled based on the moving path MP by the vehicle control processing unit 32 (Step ST112).
As further another form, the image generation unit 21 may be configured to display the moving path MP of the own vehicle by moving the own vehicle location area CPA on the display screen 2a based on the slide operation for moving the own vehicle location area mark on the display screen 2a, which is input to the touch panel. The moving path calculation unit 31 may be configured to convert the displayed moving path MP for a display system being the coordinate information on the image display device 2 into the moving path MP for a vehicle control system of the vehicle control device 3. The vehicle control processing unit 32 may be configured to then move the own vehicle along the moving path MP for the vehicle control system.
A second embodiment of the present invention includes, in addition to the components of the first embodiment, a sensor configured to enable the vehicle to detect a three-dimensional object around the own vehicle and an alarm device configured to issue a warning when the three-dimensional object exists on the moving path of the own vehicle.
A sensor 4 is a sensor configured to detect the three-dimensional object existing around the own vehicle.
An alarm device 3a is configured to issue a warning when the three-dimensional object detected by the sensor 4 exists on the moving path of the own vehicle.
The other components are the same as those of the first embodiment.
The processing of Step ST101 to Step ST108 and the processing of Step ST112 are the same as those of the first embodiment.
After the moving path MP is estimated in Step ST108, the three-dimensional object existing around the own vehicle is detected by the sensor 4 (Step ST209). The sensor used in this case may be any sensor that can detect the three-dimensional object through use of ultrasound, millimeter waves, or the like.
A result of detection of the three-dimensional object is transmitted to the moving path calculation unit 31 via the image generation unit 21, and it is determined whether or not the three-dimensional object exists on the estimated moving path MP of the own vehicle (Step ST210). In this case, the fact that the three-dimensional object exists in a bird's-eye view image may be displayed more clearly by the image generation unit 21 and the display screen 2a.
When it is determined that a three-dimensional object X exists on the moving path MP by the moving path calculation unit 31 as illustrated in, for example, part (b) of
The automatic parking apparatus according to the above-mentioned first and second embodiments are each an apparatus that is provided with the display screen and the input device in the vicinity of, for example, a driver's seat inside the own vehicle, and is configured to allow the user within the own vehicle to set the parking area and automatically park the own vehicle. In a third embodiment of the present invention, a description is made of a parking guidance apparatus and a parking guidance method according to one embodiment of the present invention for guiding the vehicle to the designated parking area through a remote operation from outside the vehicle through use of an operation-side device configured to communicate to/from a vehicle-side device.
The parking guidance apparatus is also different in that, on the vehicle-side device 100, the image display device 2 illustrated in, for example,
In the operation in, for example, Step ST103 of
In, for example, Step ST104 to Step ST107, when the input operation is conducted by the user through the input device 2b of the operation-side device 200, a signal indicating the input operation is transmitted to the vehicle-side device 100 through communications. When receiving the signal indicating the input operation, the image generation unit 21 of the vehicle-side device 100 shifts to the user operation mode. Then, the image generation unit 21 transmits a signal for conducting the dedicated display for prompting the user to designate the parking area to the display screen 2a through communications.
In this manner, the display screen 2a conducts the display for prompting the user to designate the parking area. Then, the user conducts a designation input for the parking area through the input device 2b, and when the designation input for the parking area PA is transmitted through communications, the image generation unit 21 receives the designation input. Then, the user conducts the input completion operation, and when the signal indicating the input completion operation is transmitted through communications, the image generation unit 21 determines that the input has been completed.
In, for example, Step ST108 to Step ST112, when the parking area PA is designated, the coordinate information on the own vehicle location area CPA and the designated parking area PA on the screen is input from the image generation unit 21 to the moving path calculation unit 31 of the vehicle control device 3, and the moving path is estimated by the moving path calculation unit 31. The estimated moving path MP is transmitted from the moving path calculation unit 31 to the image generation unit 21, and is further transmitted to the display screen 2a through communications to be displayed. When the user designates a desired path from the displayed paths through the input device 2b, the input signal based on the designation is transmitted to the image generation unit 21 through communications, and further transmitted to the moving path calculation unit 31 via the image generation unit 21, and the moving path is determined by the moving path calculation unit 31. The determined moving path MP is further input to the vehicle control processing unit 32, and the own vehicle is controlled based on the moving path MP by the vehicle control processing unit 32.
After the moving path MP is estimated in Step ST108, in Step ST209 to Step ST211 of
In this manner, the vehicle-side device 100 and each of the display screen 2a, the input device 2b, and the alarm device 2c exchange signals with each other via the wireless communication devices 22 and 23. This allows the user to designate the parking area PA and guide the vehicle through a remote operation from outside the vehicle by operating the input device 2b while holding the operation-side device 200 and viewing the display screen 2a.
In the above-mentioned example, the wireless communication devices 22 and 23 are used to conduct the communications between the vehicle-side device 100 and the operation-side device 200 through wireless communications, but instead of a wireless communication device, a wired communication device may be used to conduct wired communications.
In the configurations illustrated in
The moving path calculation unit 31 and the vehicle control processing unit 32 of the vehicle control device 3 and the image generation unit 21 of the image display device 2, which are the components illustrated in
In this respect, each of processing circuits for achieving functions of the moving path calculation unit 31 and the vehicle control processing unit 32 of the vehicle control device 3 and the image generation unit 21 of the image display device 2, which are the components illustrated in
In
When the functions of the respective components described above are configured by hardware illustrated in part (a) of
When the functions of the respective components described above are configured by the CPU illustrated in part (b) of
The functions of the respective components described above may be partially achieved by the dedicated hardware, and may be partially achieved by the software or the firmware.
In this manner, the processing circuit can achieve the respective functions described above by the hardware, the software, the firmware, or the combination of those.
Further, different kinds of information required for the processing are set in advance in a circuit in the case of a hardware configuration, and are stored in advance in a memory in the case of a software configuration.
The present invention is not limited to the respective embodiments described above, and includes every possible combination of those.
| Number | Date | Country | Kind |
|---|---|---|---|
| 2016-218665 | Nov 2016 | JP | national |
