JP6992707B2 - Parking support device - Google Patents

Description

The present invention relates to a parking support device that assists in parking a vehicle.

Patent Document 1 describes a parking support device capable of operating a vehicle from outside the vehicle using a remote terminal. The parking support device described in Patent Document 1 uses a dedicated remote terminal provided with a touch panel, and permits the instruction of vehicle operation from the touch panel of the remote terminal on condition that the authentication of the remote terminal is successful.

Japanese Unexamined Patent Publication No. 2018-052188

Instead of using a dedicated remote terminal like the parking support device described in Patent Document 1, a conventional electronic key and a general-purpose mobile terminal such as a smartphone are used in combination, and the user authentication by the electronic key is successful. In addition, a configuration that allows parking support operations from a mobile terminal can be considered.

However, when there are a plurality of electronic keys around the vehicle, the electronic key of the user requesting the parking assistance operation cannot be specified from the mobile terminal, so that even if the user requesting the parking assistance operation holds the electronic key, Parking assistance operations may not be performed as requested.

Therefore, an object of the present invention is to provide a parking support device that enables a parking support operation from a mobile terminal even when a plurality of electronic keys are present around the vehicle.

The parking support device according to the present invention is a parking support device that permits a vehicle parking support operation requested from a mobile terminal, provided that a legitimate electronic key exists within a predetermined range around the vehicle. A detection unit that detects a legitimate electronic key existing within a predetermined range, and a mobile terminal that requests a parking support operation within the predetermined range when a plurality of legitimate electronic keys are detected within the predetermined range by the detection unit. When the detection unit detects that there is one legitimate electronic key in the area identification unit that identifies the existing area and the area specified by the area identification unit, the parking support required from the mobile terminal is required. It is provided with a control unit that permits operation.

According to the present invention, it is possible to provide a parking support device that enables a parking support operation from a mobile terminal even when a plurality of electronic keys are present around the vehicle.

Functional block diagram of the parking support device according to the first embodiment A flowchart showing an example of the control process executed by the parking support device shown in FIG. A diagram showing an example of an operation area selection screen displayed on the user's mobile terminal. A diagram showing the positional relationship between the vehicle and the user holding the electronic key. Functional block diagram of the parking support device according to the second embodiment A flowchart showing an example of the control process executed by the parking support device shown in FIG. The figure which shows an example of the image around the vehicle used in step S20 shown in FIG.

The parking support device according to the embodiment permits a parking support operation from a mobile terminal outside the vehicle, provided that a legitimate electronic key exists within a predetermined range around the vehicle. When it is detected that a plurality of electronic keys exist within a predetermined range around the vehicle, the area where the mobile terminal requesting the parking assistance operation exists is specified, and the legitimate electronic key existing in the specified area is 1. If so, the electronic key of the specified area is confirmed as the electronic key of the user instructing the parking support operation, and the requested parking support operation is permitted.

Hereinafter, specific embodiments will be described.

(First Embodiment)
FIG. 1 is a functional block diagram of the parking support device according to the first embodiment.

The parking support device 11 is a device mounted on a vehicle and performs a parking support operation based on an instruction transmitted from a mobile terminal 20 such as a smartphone when the legitimate electronic key 30 is within a predetermined range around the vehicle. Is. In the following description, remote parking from outside the vehicle will be described as an example of a parking support operation that can be executed from the mobile terminal 20. The parking support device 11 includes a first transmission / reception unit 1, a second transmission / reception unit 2, an area identification unit 3, and a control unit 4.

The first transmission / reception unit 1 transmits / receives a signal to / from the mobile terminal 20 by wireless communication. The communication method between the first transmission / reception unit 1 and the mobile terminal 20 is not particularly limited, and for example, Wi-Fi (registered trademark), BLE (Bluetooth (registered trademark) Low Energy), or the like can be used.

The second transmission / reception unit 2 transmits / receives a signal to / from the electronic key 30 by wireless communication. The second transmission / reception unit 2 can transmit a signal to the electronic key 30 by LF communication and receive a signal transmitted from the electronic key 30 by RF communication, for example. From the electronic key 30, for example, a signal including information indicating the radio field strength of the LF signal received by the electronic key 30 is transmitted. The electronic key 30 transmits a response signal to the LF signal from the vehicle associated with the vehicle in advance. The second transmission / reception unit 2 transmits an LF signal when the first transmission / reception unit 1 receives a notification that the remote parking application has been activated in the mobile terminal 20, and a response signal from the electronic key 30. Based on the presence or absence of reception, the presence and number of electronic keys 30 within a predetermined range around the vehicle (within the reach of the LF signal output from the second transmission / reception unit 2) are detected.

When the second transmission / reception unit 2 detects a plurality of regular electronic keys 30 within a predetermined range around the vehicle, the area specifying unit 3 performs a remote parking operation within the predetermined range around the vehicle. The area where the mobile terminal 20 exists is specified. In the present embodiment, as will be described later, the area specifying unit 3 instructs the mobile terminal 20 to display the area selection screen via the first transmission / reception unit 2, and the area selected by the mobile terminal 20 is first transmitted / received. By acquiring through the unit 1, the area where the mobile terminal 20 that has transmitted the remote parking request exists is specified.

When the area specifying unit 3 identifies the area in which the remote parking operator (user holding the mobile terminal 20) exists, the control unit 4 instructs the second transmitting / receiving unit 2 to enter the specified area. Search for the electronic key 30 of. When the control unit 4 detects one legitimate electronic key 30 in the specified area as a result of the search by the second transmission / reception unit 2, the control unit 4 permits the remote parking requested by the mobile terminal 20 and allows the vehicle to park. A control unit (ECU) (not shown) that controls the movement is instructed to execute remote parking.

Hereinafter, the details of the parking support device according to the first embodiment will be described with reference to FIGS. 1 to 3.

FIG. 2 is a flowchart showing an example of a control process executed by the parking support device shown in FIG. 1, and FIG. 3 is a diagram showing an example of an operation area selection screen displayed on a user's mobile terminal. The control process shown in FIG. 2 is started when the first transmission / reception unit 1 receives a notification from the mobile terminal 20 that the remote parking application has been activated in the mobile terminal 20.

Step S1: The second transmission / reception unit 2 searches for the electronic key 30 around the vehicle. As described above, the search for the electronic key can be performed by transmitting the LF signal by the second transmission / reception unit 2 and receiving the response signal to the transmitted LF signal. After that, the process proceeds to step S2.

Step S2: The second transmission / reception unit 2 determines whether or not a plurality of electronic keys 30 exist as a result of the search. If the determination in step S2 is YES, the process proceeds to step S3, otherwise the process proceeds to step S10.

Step S3: When the second transmission / reception unit 2 determines that a plurality of electronic keys 30 exist within a predetermined range around the vehicle, the area identification unit 3 attaches to the mobile terminal 20 via the first transmission / reception unit 1. On the other hand, for example, the display of the area selection screen as shown in FIG. 3 is instructed. In the example of FIG. 3, the display screen 21 of the mobile terminal 20 displays an image 22 showing the vehicle and an area frame 23 for dividing the periphery of the vehicle into six areas as an area selection screen. The user who requests the execution of remote parking selects the area in which he / she is located by tapping the section of the area selection screen displayed on the mobile terminal 20, and notifies the parking support device 11 of the position of the mobile terminal 20. be able to.

Step S4: The area specifying unit 3 determines whether or not the first transmission / reception unit 1 has received the selected area from the mobile terminal 20. If the determination in step S4 is YES, the process proceeds to step S5, and in other cases, the determination in step S4 is performed again.

Step S5: The control unit 4 instructs the second transmission / reception unit 2 to search for the electronic key 30 in the specified area based on the user's selection. Also in this step, the search for the electronic key can be performed by transmitting the LF signal by the second transmission / reception unit 2 and receiving the response signal to the transmitted LF signal. Further, as a method of searching for the electronic key 30 in a specific area, there is a method of using a part of a plurality of LF signal transmitting antennas provided in each part of the vehicle. For example, when LF transmitting antennas are provided on the front, rear, left, and right sides of the vehicle, the second transmission / reception unit 2 includes the combination of the LF transmission antennas to be used and the reception strength included in the response signal received from the electronic key 30. Based on, the presence / absence and number of electronic keys 30 in the specified area can be determined.

Step S6: The control unit 4 determines whether or not a plurality of electronic keys 30 exist in the searched area. If the determination in step S6 is YES, the process proceeds to step S7, otherwise the process proceeds to step S10. If it is determined in step S6 that a plurality of electronic keys exist in the specified area, the control unit 4 holds the mobile terminal 20 with respect to the mobile terminal 20 via the first transmission / reception unit 1. You may notify that there are a plurality of electronic keys 30 in the area where the user is.

Step S7: The control unit 4 continuously executes the search for the electronic key 30 in the area specified based on the user's selection. After that, the process proceeds to step S8.

Step S8: The control unit 4 determines whether or not the number of electronic keys 30 existing in the searched area has been reduced to one. If the determination in step S8 is YES, the process proceeds to step S9, otherwise the process proceeds to step S7.

Step S9: The control unit 4 notifies the mobile terminal 20 via the first transmission / reception unit 1 that the number of electronic keys 30 in the area selected by the user has been reduced to one, and continues remote parking. Confirm that this is done. This confirmation process can be performed, for example, by displaying a button or the like for inputting whether or not to continue remote parking on the display screen of the mobile terminal 20.

Step S10: The control unit 4 determines the one electronic key 30 remaining in the searched area as the electronic key 30 of the user who requested the remote parking, and permits the execution of the remote parking requested by the mobile terminal 20. .. After that, the control unit 4 instructs a control unit (not shown) that controls the movement of the vehicle to execute remote parking in response to an instruction from the user. After that, the process ends.

(Effects, etc.)
Here, the advantage of specifying the area where the mobile terminal 20 that has transmitted the request for the parking support operation exists by the area specifying unit 3 will be described.

FIG. 4 is a diagram showing the positional relationship between the vehicle and the user holding the electronic key. In FIG. 4, the reachable range of the LF signal from the parking support device 11 is shown by a two-dot chain line.

As shown in FIG. 4, a user who holds both the legitimate electronic key 30 and the mobile terminal 20 within a predetermined operable range (within the range of the alternate long and short dash line) around the vehicle 40 and performs a remote parking operation. Consider a case where 51 and a user 52 holding a legitimate electronic key 30 exist. Within the operable range indicated by the alternate long and short dash line, the parking assist device 11 periodically outputs an LF signal for searching the electronic key 30, and therefore receives a response signal from each of the two regular electronic keys 30. do. When the user 51 activates the remote parking application, the parking support device 11 cannot determine which user's electronic key is, so that the electronic key 30 held by the user 52 who is not the remote parking operator. May be recognized as the electronic key of the user 51 who is the operator of the remote parking. Recognizing that the electronic key 30 held by the user 52 is the electronic key of the user 51 holding the mobile terminal 20, the following problems may occur.

First, consider a case where the user 51 operates the mobile terminal 20 at the position P1 to activate the remote parking application, and then the user 52 moves from the position P3 to the position P4 and goes out of the operable range indicated by the two-dot chain line. .. When the parking support device 11 recognizes the electronic key 30 of the user 52 as the electronic key of the remote parking operator, the user 51 requests the execution of remote parking from the mobile terminal 20 within the operable range. However, it is determined that the electronic key 30 is out of the operable range, and the execution of remote parking is not permitted. In this case, there arises a problem that the user 51, who is the operator of the remote parking, cannot operate the remote parking even though he / she is within the operable range.

Next, when the user 51 operates the mobile terminal 20 at the position P1 to activate the remote parking application, and then the user 51 moves from the position P1 to the position P2 and goes out of the operable range indicated by the alternate long and short dash line. think. Since the international standard UN-R79 regarding the automatic steering of vehicles defines the operable range when performing remote parking, the operator of the remote parking is within the operable range at the start and during the execution of the remote parking. You need to check if it exists in. However, when the parking support device 11 recognizes the electronic key 30 of the user 52 as the electronic key of the operator of remote parking, even if the user 51 who is the operator goes out of the operable range, the remote is remote. Parking will be possible and will not meet the requirements of international standards.

On the other hand, in the parking support device 11 according to the present embodiment, when a plurality of regular electronic keys 30 are present within the operable range, the operator first uses the operation area selection screen as shown in FIG. The area where the user 51 is present is specified. Then, the electronic key 30 existing in the specified area is searched again, and when one legitimate electronic key 30 is detected in the specified area, the detected electronic key 30 is used as the electronic key of the user 51 who is the operator. Is confirmed. By performing these processes, the parking support device 11 identifies the electronic key 30 held by the user 51 who is the operator. Therefore, if the electronic key 30 of the operator 51 is within the operable range, the remote parking can be performed. Remote parking can be performed regardless of the position of the electronic key 30 held by the user 52 who does not perform the operation. Further, since the electronic key 30 held by the user 51 (mobile terminal 20) who is the operator is specified in the parking support device 11, remote parking is not performed when the user 51 is out of the operable range. It can be controlled in such a way that it complies with the requirements of international standards.

(Second embodiment)
FIG. 5 is a functional block diagram of the parking support device according to the second embodiment. Hereinafter, the differences between the present embodiment and the first embodiment will be mainly described.

In the parking support device 12 according to the present embodiment, as in the first embodiment, instead of specifying the area where the user holding the mobile terminal 20 exists based on the selection from the area selection screen displayed on the mobile terminal 20. In addition, the area specifying unit 3 identifies the area where the user holding the mobile terminal 20 exists, based on the image around the vehicle captured by the vehicle-mounted camera 6. Since the first transmission / reception unit 1, the second transmission / reception unit 2, and the control unit 4 according to the present embodiment are the same as those described in the first embodiment, the repeated description will be omitted.

Hereinafter, the details of the parking support device according to the second embodiment will be described with reference to FIGS. 5 and 6.

FIG. 6 is a flowchart showing an example of the control process executed by the parking support device shown in FIG. 1, and FIG. 7 is a diagram showing an example of an image around the vehicle used in step S20 shown in FIG. Is.

The flowchart shown in FIG. 6 is provided with step S20 in place of steps S3 and S4 of the flowchart described with reference to FIG.

Steps S1 to S2: Similar to the first embodiment, when the first transmission / reception unit 1 receives the activation notification of the remote parking application from the mobile terminal 20, the second transmission / reception unit 2 searches for the electronic key 30 around the vehicle. Then, it is determined whether or not there are a plurality of electronic keys 30 within a predetermined range around the vehicle.

Step S20: When it is determined by the second transmission / reception unit 2 that a plurality of electronic keys 30 exist within a predetermined range around the vehicle (YES in step S2), the area identification unit 3 is the vehicle imaged by the vehicle-mounted camera 6. An image of the surrounding area is acquired, and an area in which a user operating the mobile terminal 20 exists is specified based on the acquired image of the area around the vehicle. The image acquired by the area specifying unit 3 is not particularly limited, but for example, an image looking down on the vehicle and its surroundings from above the vehicle as shown in FIG. 7 can be used. In the image shown in FIG. 7, the user 51 who operates the mobile terminal 20 and the user 52 who does not hold the mobile terminal exist in a predetermined range around the vehicle 40. The area specifying unit 3 detects the position of the user 51 operating the mobile terminal 20 reflected in the image shown in FIG. 7, and based on the detected position, the user 51 operating the mobile terminal 20 ( That is, the area where the remote parking operator) is located is specified to be on the right side of the vehicle. The image shown in FIG. 7 can be obtained by processing the images of the cameras provided on the front, rear, left and right sides of the vehicle. However, the area specifying unit 3 may specify the area where the user 51 operating the mobile terminal 20 exists, based on the front, rear, left, and right images of the vehicle before the image shown in FIG. 7 is generated. After step S20, the process proceeds to step S5.

Steps S5 to S10: Similar to the first embodiment, the electronic key 30 in the area specified in step S20 is searched, and the number of electronic keys 30 existing in the area is one or one. In this case, one electronic key 30 in the searched area is confirmed as the electronic key of the user who requested the remote parking, and the execution of the remote parking requested by the mobile terminal 20 is permitted. After that, the control unit 10 instructs a control unit (not shown) that controls the movement of the vehicle to execute remote parking in response to an instruction from the user. After that, the process ends.

(Effects, etc.)
In the parking support device 12 according to the present embodiment, when a plurality of regular electronic keys 30 are present within the operable range, the operator of the mobile terminal 20 (remote parking) is based on the image around the vehicle taken by the vehicle-mounted camera 6. Identify the area where the operator) is located. Then, the electronic key 30 existing in the specified area is searched again, and when one regular electronic key 30 is detected in the specified area, the detected electronic key 30 is determined as the operator's electronic key. By performing these processes, the parking support device 12 is operated by the electronic key 30 of the remote parking operator in order to specify the electronic key 30 held by the remote parking operator (user holding the mobile terminal 20). Whether or not remote parking can be executed can be controlled depending on whether or not it is within the possible range. Further, in the present embodiment, since the area where the remote parking operator exists can be specified by the image processing in the parking support device 12, it is not necessary for the user to perform an area selection operation or the like, and the convenience for the user is improved. ..

(Other modifications, etc.)
In each of the above embodiments, the electronic key authentication process can be performed as appropriate. The electronic key may be authenticated when searching for the electronic key around the vehicle, or the electronic key may be authenticated when the electronic key of the remote parking operator is confirmed.

Further, in each of the above embodiments, the electronic key confirmed as the operator's electronic key is used when an operation instruction is given from the remote parking application after the remote parking application is started, or during remote parking. It is preferable to appropriately confirm that it is within the operable range.

Further, even when it is determined in step S2 of each of the above embodiments that one electronic key exists within the operable range around the vehicle, the area specifying unit identifies and specifies the area of the remote parking operator. It may be confirmed that there is only one electronic key in the area where the remote parking operator is located by re-searching the electronic key in the area.

INDUSTRIAL APPLICABILITY The present invention can be used for a parking support device that enables execution of parking support operations such as remote parking from outside the vehicle.

1 First transmission / reception unit 2 Second transmission / reception unit 3 Area identification unit 4 Control units 11, 12 Parking support device 20 Mobile terminal 30 Electronic key

Claims (1)

A parking support device that permits a vehicle parking support operation requested by a mobile terminal, provided that a legitimate electronic key exists within a predetermined range around the vehicle.
A detector that detects the legitimate electronic key that exists within the predetermined range, and
When a plurality of the legitimate electronic keys are detected within the predetermined range by the detection unit, an area specifying unit that specifies an area in which the mobile terminal requesting the parking support operation exists within the predetermined range, and an area specifying unit.
When the presence of one legitimate electronic key in the area specified by the area specifying unit is detected by the detection unit, the control unit that permits the parking support operation requested from the mobile terminal. A parking support device equipped with.

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