JP2021011129A - Portable terminal key system - Google Patents

Abstract

To adequately permit operation of operation means of a vehicle, that is, adequately operate a door lock device of the vehicle irrespective of a parking environment.SOLUTION: A radio wave is received from a smartphone 1 by an antenna 5. A radio wave phase difference of each radio wave channel and intensity of the radio wave received by the antenna 5 are set (a parameter is changed) according to a parking environment grasped by environment grasping means (a boundary grasping function 11, an on-vehicle camera 12, an ultrasonic sensor 13). A distance range from the smartphone 1 is grasped and operation of a door lock device of a vehicle 2 is permitted to adequately operate the door lock device of the vehicle 2.SELECTED DRAWING: Figure 2

Description

The present invention relates to a mobile terminal key system that operates a vehicle using a mobile terminal.

A system (portable terminal key system) that permits a vehicle operating means, for example, a locking operation (door lock) and an unlocking operation (door unlocking) using a mobile terminal (smartphone) has been put into practical use. In the mobile terminal key system, a signal (radio wave) from the mobile terminal is received by a vehicle receiving means (antenna, etc.), and when the distance between the authenticated mobile terminal and the vehicle reaches a determined area (determined). The door lock (door unlock) operation is permitted when the vehicle is out of the area.

In the mobile terminal key system, it is necessary to appropriately estimate the position of the mobile terminal even if there is an obstacle or the like. Therefore, conventionally, a technique has been proposed in which a radio wave directly received and a reflected radio wave reflected by an obstacle or the like are recognized, and the radio wave directly received is determined as a radio wave from a mobile terminal (for example, Patent Document 1). reference).

In the technique proposed in Patent Document 1, it is possible to identify the directly received radio wave and the reflected radio wave and estimate the direction in which the mobile terminal exists. Therefore, even if an obstacle or the like exists, the direction (position) of the mobile terminal can be appropriately grasped.

Various situations can be considered as the parking environment of the vehicle. For example, if you are parked in an unobstructed parking lot, if you are parked near a wall, if many vehicles are parked in an adjacent location, or if you are parked in a mechanical or three-dimensional parking lot underground. It can be assumed that the vehicle is parked in a pit or on the upper floor.

In the conventionally proposed mobile terminal key system, if the parking environment is different and the radio wave reception condition is different, the distance to the mobile terminal may not be grasped, and the vehicle operating means cannot be properly permitted. There was a risk.

For example, in a parking environment where there are obstacles that block radio waves, such as walls and adjacent vehicles, in the case of a system that allows door unlocking at a predetermined distance, radio waves will be emitted even if the mobile terminal moves close to the vehicle. There was a risk that the door unlocking operation would not be permitted due to improper reception.

In addition, in the case of a system in which the door lock operation is permitted when the mobile terminal is separated from the vehicle after parking, radio waves cannot be properly received even if the mobile terminal is separated from the vehicle. There was a risk that the door lock operation would not be permitted.

Therefore, in the mobile terminal key system, the operation of the vehicle operating means can be appropriately permitted regardless of the parking environment, that is, the vehicle operating means (for example, regardless of the parking environment) within a predetermined distance range. , Door unlocking, door locking operation means), there is a demand for a technique capable of appropriately permitting the operation.

JP-A-2016-27048

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a mobile terminal key system capable of appropriately permitting (controlling) the operation of a vehicle operating means regardless of the parking environment.

The mobile terminal key system of the present invention according to claim 1 for achieving the above object is mounted on a vehicle and receives radio waves from a mobile terminal carried by a user, and radio waves received by the receiving means. The control means is provided with a control means for permitting the operation of the operation means of the vehicle by determining the situation of the vehicle, and an environment grasping means for grasping the parking environment of the vehicle and sending the grasped result to the control means. Sets the criteria for determining the radio waves received by the receiving means according to the parking environment grasped by the environment grasping means, and based on the criteria for determining the radio waves set according to the parking environment, It is characterized by having a permission function for permitting operation.

In the present invention according to claim 1, the receiving means receives the radio wave from the mobile terminal, and the control means determines the state of the radio wave, so that, for example, the range of the distance to the mobile terminal can be grasped and the vehicle operating means. Allow the operation of. In this case, the criteria for determining the radio waves received by the receiving means (for example, the strength of the radio waves and the threshold value of the radio wave phase difference for each radio wave channel) are set according to the parking environment grasped by the environment grasping means, and the parking environment. The operation of the operating means is permitted by the permission function based on the radio wave determination criteria (for example, the strength of the radio wave and the threshold value of the radio wave phase difference for each radio wave channel) set according to.

By permitting the operation of the operating means based on the radio wave judgment criteria set according to the parking environment, the reception radio wave judgment criteria are automatically changed (switched) according to the parking environment, and the parking environment. Regardless of, the operation of the operating means can be permitted in the same state (distance). For example, regardless of the parking environment, it is possible to recognize the unlocking operation and the locking operation area and permit the operation in the same state (distance).

Therefore, even if the parking environment changes, the radio wave judgment criteria are appropriately switched according to the parking environment (for example, the radio wave intensity and the threshold value of the radio wave phase difference for each radio wave channel are switched). For example, when the range of the distance to the mobile terminal is determined, the operation of the operating means is permitted.

As a specific example, even if there is a wall or an adjacent vehicle near the parked vehicle, the wall can be changed by changing the threshold value of the radio wave intensity for determining the permission of the operation of the operating means. Even if there is another vehicle or the like adjacent to the vehicle, the operation of the operating means (for example, unlocking operation, locking operation) is permitted within the same distance range as when there is no wall or other vehicle or the like.

Therefore, regardless of the parking environment, it is possible to appropriately permit the operation of the operating means of the vehicle.

The mobile terminal key system of the present invention according to claim 2 is the mobile terminal key system according to claim 1, wherein the permission function of the control means determines the strength of radio waves as a criterion for receiving by the receiving means. It is characterized in that it is set and the operation of the operating means is permitted according to the strength of the received radio wave.

In the present invention according to claim 2, the operation of the operating means can be permitted according to the intensity of the radio wave (by changing the recognition threshold value).

Further, the mobile terminal key system of the present invention according to claim 3 is the mobile terminal key system according to claim 1, wherein the permission function of the control means is used for each radio wave channel as a determination criterion for receiving by the receiving means. It is characterized in that the radio wave phase difference is set and the operation of the operating means is permitted according to the radio wave phase difference for each received radio wave channel.

In the present invention according to claim 3, the operation of the operating means can be permitted according to the radio wave phase difference for each radio wave channel (by changing the recognition threshold value).

Further, in the mobile terminal key system of the present invention according to claim 4, in the mobile terminal key system according to any one of claims 1 to 3, the criterion for determining the radio wave received by the receiving means is as described above. Regardless of the parking environment grasped by the environment grasping means, the operation of the operating means is permitted while the distance between the vehicle and the mobile terminal is the same.

In the present invention according to claim 4, the criterion for determining radio waves is a situation in which the operation of the operating means is permitted while the distance between the vehicle and the mobile terminal is the same, regardless of the parking environment grasped by the environment grasping means. Therefore, for example, even if there is a wall or another vehicle, the operation means can be operated at the same distance (range) as when there is no wall or other vehicle.

Further, the mobile terminal key system of the present invention according to claim 5 is the mobile terminal key system according to any one of claims 1 to 4, wherein the environment grasping means is mounted on the vehicle and travels. It is characterized in that it is a means for grasping the driving environment for grasping the environment.

In the present invention according to claim 5, parking is performed by using a driving environment grasping means mounted on a vehicle and grasping the driving environment, for example, using an in-vehicle camera or an ultrasonic sensor applied to an automatic driving system. You can understand the environment.

For example, the parking environment can be directly grasped by connecting the traveling environment grasping means to the mobile terminal key ECU that controls the mobile terminal key system. In addition, the parking environment is determined by connecting the driving environment grasping means to another ECU that controls the vehicle in an integrated manner, and the mobile terminal key ECU receives the determined parking environment. Can be grasped.

Further, the mobile terminal key system of the present invention according to claim 6 is the mobile terminal key system according to any one of claims 1 to 4, wherein the environment grasping means obtains a parking environment by transmitting and receiving radio waves. It is characterized by being a means of grasping.

In the present invention according to claim 6, since the environment grasping means is a means for grasping the parking environment by transmitting and receiving radio waves, it is possible to directly determine the degree of reflection of radio waves and the like to reflect objects (for example, walls, other vehicles, etc.). ) Exists, the parking environment can be grasped including the material of the reflection object. As the environment grasping means, it is also possible to use both the means for grasping the transmission and reception of radio waves and the driving environment grasping means for grasping the driving environment.

The mobile terminal key system of the present invention makes it possible to appropriately permit the operation of the operating means of the vehicle regardless of the parking environment.

It is a conceptual diagram explaining an example of the operation of the mobile terminal key system which concerns on one Example of this invention. It is a block block diagram of the mobile terminal key system which concerns on one Example of this invention. It is explanatory drawing of the parking environment.

FIG. 1 shows a concept for explaining an example of the operation of the mobile terminal key system according to the embodiment of the present invention, and FIG. 2 shows a block configuration of the mobile terminal key system according to the embodiment of the present invention.

Further, FIG. 3 shows an example of a parking environment, FIG. 3 (a) shows a state in which walls exist on both sides, and FIG. 3 (b) shows a state in which a wall exists on one side. c) is a state in which a wall exists on the rear side, and FIG. 3 (d) is a state in which vehicles are parked adjacent to each other.

As shown in FIG. 1, in the mobile terminal key system according to the embodiment of the present invention, for example, between a mobile terminal (smartphone: hereinafter referred to as a smartphone) 1 carried by a user and a vehicle 2 (control means). Radio waves are transmitted and received, and the operation of the operating means is permitted.

For example, when the user approaches the parked vehicle 2 with the smartphone 1 and the user (smartphone 1) enters the operation area (indicated by the solid line in the figure) in which the vehicle 2 is unlocked. , The door locking mechanism (operating means) of the vehicle 2 is operated (operation is permitted) in the unlocked state (door unlocking).

Further, when the vehicle 2 is parked, the user brings the smartphone 1 away from the vehicle 2, and the user (smartphone 1) comes out of the operation area (indicated by the dotted line in the figure) in which the vehicle 2 is locked. , The door locking mechanism (operating means) of the vehicle 2 is operated (operation is permitted) in the locked state (door lock).

As shown in FIGS. 1 and 2, the vehicle 2 is equipped with a receiving means (antenna) 5 for receiving radio waves from the smartphone 1. Then, a smartphone ECU (control means) 6 that permits the operation of the door lock mechanism of the vehicle 2 by determining the state of the radio wave received by the antenna 5 is provided.

The smartphone ECU 6 determines the door unlock area (indicated by the solid line in FIG. 1) and the door lock area (indicated by the dotted line in FIG. 1), and the operation of the door (tailgate) locking mechanism operates. Allowed. The smartphone ECU 6 is provided with a boundary grasping function 11 (environmental grasping means) for grasping the parking environment of the vehicle 2.

The boundary grasping function 11 includes detection information from an in-vehicle camera 12 (environment grasping means) and an ultrasonic sensor 13 (environment grasping means) used as a driving environment grasping means for grasping the driving environment of the vehicle 2 by automatic driving or the like. Is entered. The boundary grasping function 11 can be provided in another ECU of the vehicle 2, for example, an ECU that integrally controls the vehicle 2.

The in-vehicle camera 12 and the ultrasonic sensor 13 are subject to the detection means used in the driving environment grasping means for grasping the driving environment of the vehicle 2 in automatic driving or the like, but the boundary grasping function 11 is a radio wave transmitting / receiving means. It is also possible to use the radio wave transmitting / receiving means exclusively, or to use it in combination with the in-vehicle camera 12 and the ultrasonic sensor 13. By using the radio wave transmitting / receiving means, it is possible to grasp the material (metal, non-metal) of an obstacle (wall or other vehicle) by the degree of reflection of the radio wave.

The smartphone ECU 6 is permitted to set a criterion for determining radio waves from the smartphone 1 received by the antenna 5 according to the parking environment grasped by the environment grasping means (boundary grasping function 11, in-vehicle camera 12, ultrasonic sensor 13). Function 15 is provided. The operation of the operating means is permitted by the permission function 15 based on the radio wave determination criteria set according to the parking environment.

With the environment grasping means (boundary grasping function 11, in-vehicle camera 12, ultrasonic sensor 13), what position the wall is, how far it is, whether there is another vehicle next to it, and how far it is. Whether it exists or not is grasped.

For example, as a parking environment, as shown in FIG. 3A, there are walls 21 on both sides of the vehicle 2, and as shown in FIG. 3B, there are walls 21 on one side of the vehicle 2. As shown in FIG. 3C, it is conceivable that the wall 21 is present on the rear side of the vehicle, and as shown in FIG. 3D, the other vehicle 22 is parked on one side of the vehicle 2.

As one example of the determination criteria, the permission function 15 is applied with means for changing the strength of the radio wave to be determined and the threshold value of the radio wave phase difference for each radio channel when a wall 21 or another vehicle 22 is present. .. For example, no matter where the wall 21 or the other vehicle 22 is located, the operating area of the door lock mechanism (solid line, dotted line in FIG. 1) can be recognized at the same distance as when the wall 21 or the other vehicle 22 is not present. All means of setting parameters (criteria for determining received radio waves) are applied to.

In other words, the condition of the received radio wave (judgment standard) is automatically changed (switched) so that the door lock mechanism operates at the same distance regardless of the parking environment, and the same state regardless of the parking environment. (Distance) allows the operation of the door lock mechanism (recognizes the door unlock and door lock areas).

That is, the condition of the received radio wave is changed to a parameter according to the environment. For example, the strength of the radio wave from the smartphone 1 received by the antenna 5 and the threshold value of the radio wave phase difference for each radio wave channel are changed. The radio waves can be received so that the door lock mechanism operates at the same distance regardless of the parking environment such as the presence of the wall 21 or another vehicle 22 (obstacle).

The parking state is determined when the vehicle 2 is parked at a predetermined place and the shift position enters P or the power is turned off. When the parking state is determined, the parking environment of the vehicle 2 is grasped by the boundary grasping function 11 based on the information of the in-vehicle camera 12 and the ultrasonic sensor 13. For example, the existence of the wall 21 and the existence of another vehicle 22 are grasped. The parking environment information grasped by the boundary grasping function 11 is sent to the permission function 15.

In the permission function 15, for example, no matter where the wall 21 or the other vehicle 22 is located, the door is unlocked or the door is locked at the same distance as when the wall 21 or the other vehicle 22 is not present, depending on the grasped parking environment. Set the parameters (judgment criteria for received radio waves) so that the area (solid line, dotted line in FIG. 1) can be recognized. That is, the parameters of the received radio waves (determination criteria such as the threshold value of the received radio waves) are set according to the respective situations of FIGS. 3 (a), (b), (c), and (d).

Since the parking environment may change such that another vehicle 22 moves while the vehicle 2 is parked, for example, the in-vehicle camera 12 and the ultrasonic sensor 13 are operated every 5 minutes and 10 minutes to operate the parking environment. It is preferable to update.

In the mobile terminal key system described above, the antenna 5 receives the radio wave from the smartphone 1, the smartphone ECU 6 determines the radio wave condition, and for example, the range of the distance to the smartphone 1 is grasped, and the door lock device of the vehicle 2 is used. Operation is allowed.

Then, the intensity of the radio wave received by the antenna 5 and the radio wave phase difference for each radio wave channel are set according to the parking environment grasped by the environment grasping means (boundary grasping function 11, in-vehicle camera 12, ultrasonic sensor 13) ( (Change the parameters), and the operation of the door lock device is permitted based on the changed parameters.

Therefore, the judgment criteria (for example, intensity) of the received radio wave is automatically changed (switched) according to the parking environment, and the operation of the door lock device is permitted in the same state (distance) regardless of the parking environment. (For example, recognizing the area of door unlocking and door locking).

Therefore, even if the radio wave judgment criteria (parameters) are appropriately switched according to the parking environment (for example, the radio wave intensity and the threshold value of the radio wave phase difference for each radio wave channel are switched) and the parking environment changes, for example. , The operation of the door lock device is permitted when the range of the distance to the smartphone 1 is determined.

As a result, the door lock device of the vehicle 2 can be properly operated regardless of the parking environment.

Then, the parking environment can be grasped by using the in-vehicle camera 12 and the ultrasonic sensor 13 applied to the automatic driving system. For example, the smartphone ECU 6 is provided with the boundary grasping function 11, and the in-vehicle camera 12 and the ultrasonic sensor 13 can be connected to directly grasp the parking environment.

Further, the parking environment can be grasped by determining the parking environment by another ECU that controls the vehicle in an integrated manner and receiving the determined parking environment by the smartphone ECU 6.

Therefore, the mobile terminal key system of the present invention can appropriately permit the operation of the operating means of the vehicle regardless of the parking environment.

The present invention can be used in the industrial field of a mobile terminal key system that operates a vehicle using a mobile terminal.

1 Mobile terminal (smartphone: smartphone)
2 Vehicle 5 Receiving means (antenna)
6 Smartphone ECU
11 Boundary grasping function 12 In-vehicle camera 13 Ultrasonic sensor 15 Permit function 21 Wall 22 Other vehicles

Claims (6)

A receiving means that is mounted on a vehicle and receives radio waves from a mobile terminal carried by the user,
A control means that permits the operation of the operating means of the vehicle by determining the state of the radio wave received by the receiving means, and
It is provided with an environment grasping means for grasping the parking environment of the vehicle and sending the grasped result to the control means.
The control means
Judgment criteria for radio waves received by the receiving means are set according to the parking environment grasped by the environment grasping means, and the operation of the operating means is performed based on the radio wave judging criteria set according to the parking environment. A mobile terminal key system characterized by having a permit function to permit. In the mobile terminal key system according to claim 1,
The permission function of the control means
A mobile terminal key system characterized in that the strength of radio waves is set as a criterion for receiving by the receiving means, and the operation of the operating means is permitted according to the strength of the received radio waves. In the mobile terminal key system according to claim 1,
The permission function of the control means
A mobile terminal key system characterized in that a radio wave phase difference for each radio wave channel is set as a criterion for receiving by the receiving means, and the operation of the operating means is permitted according to the radio wave phase difference for each received radio wave channel. In the mobile terminal key system according to any one of claims 1 to 3.
The criteria for determining the radio waves received by the receiving means are:
A mobile terminal key system, characterized in that the operation of the operating means is permitted while the distance between the vehicle and the mobile terminal is the same regardless of the parking environment grasped by the environment grasping means. In the mobile terminal key system according to any one of claims 1 to 4.
The environment grasping means
A mobile terminal key system that is mounted on the vehicle and is a means for grasping the driving environment for grasping the driving environment. In the mobile terminal key system according to any one of claims 1 to 4.
The environment grasping means
A mobile terminal key system characterized by being a means of grasping the parking environment by transmitting and receiving radio waves.

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