JP6200827B2 - Smart entry system - Google Patents

Description

  The present invention prohibits the opening of the rear door when the driver is seated in the driver's seat, and opens the rear door when the portable device is recognized and the driver is not seated. It relates to a smart entry system that is allowed.

  2. Description of the Related Art Conventionally, a vehicle such as an automobile includes a portable device having a wireless transmission function, that is, a user who carries a smart key (electronic key) (in many cases, it is a driver, and is hereinafter referred to as a “driver”). However, there is an active smart entry system that unlocks the entry / exit door by turning on a door handle or a door opener switch installed in the vicinity of the door handle. It has been.

  Further, this type of smart key is provided with a lock switch and an unlock switch. By operating these switches, the door can be locked and unlocked remotely. Therefore, if the driver turns on the unlock switch for the smart key, the entry / exit door is unlocked by remote control, so that a passenger other than the driver, that is, a passenger who does not carry the smart key can also open the entrance / exit door. You can get on.

  In general, when the entrance door is unlocked, the trunk lid is often unlocked at the same time. However, in order to improve security from the idea that the trunk room is a private space, for example, a user who does not carry a smart key as disclosed in Patent Document 1 (Japanese Patent Laid-Open No. 2006-342590). There is also a known vehicle (including a driver) that does not allow the trunk lid to be opened.

JP 2006-342590 A

  As disclosed in the above-mentioned document, if the trunk lid cannot be opened unless the smart key is possessed, the security in the trunk room can be sufficiently secured.

  By the way, the driver does not always carry the smart key and often carries it in a bag. When riding, the bag is naturally placed in the passenger seat or the rear seat, so that even if an attempt is made to open the trunk lid after placing the bag in the vehicle, the smart key is not recognized and cannot be opened. Similarly, a driver carrying a smart key in the jacket pocket cannot open the trunk lid if the driver puts the jacket in the car.

  As described above, in the technique disclosed in the above-described document, even if security can be ensured, the trunk lid cannot be opened even by the driver even when the smart key is placed in the vehicle. There is a problem that lacks convenience.

  As a countermeasure, if the smart key is recognized as being in the car, the trunk lid may be unlocked so that it can be opened. The lid may be opened, which is not preferable in terms of security.

  In view of the above circumstances, the present invention makes it possible for a driver to open a trunk lid from the outside even when the driver does not have a smart key when the portable device is recognized in a vehicle, and to open it by others. An object of the present invention is to provide a smart entry system that can satisfy both convenience and security.

A smart entry system according to the present invention includes a door opener switch that opens a rear door of a vehicle from the outside of the vehicle, a portable device that transmits an identification code, a recognition unit that recognizes the identification code from the portable device, Seating determination means for determining whether or not a driver is seated in the driver's seat; and opening of the rear door when the door opener switch is turned on and the portable device in the vehicle is recognized by the recognition means Door opening determining means for determining whether or not to permit the vehicle, and the door open determining means prohibits the opening of the rear door when the seating detecting means detects the driver's seating, and If the person's seating is not detected, the rear door is allowed to open.

  According to the present invention, when the seating detection means detects the driver's seating, the rear door is prohibited from being opened, and when the driver's seating is not detected, the rear door is opened. When the mobile device is recognized, the trunk lid can be opened from the outside even if the driver does not have a smart key, and if the driver is seated in the driver's seat, it can be opened by others. Therefore, both convenience and security can be satisfied.

Schematic diagram of a vehicle equipped with a smart entry system Flowchart showing trunk open determination routine

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. Reference numeral 1 in FIG. 1 denotes a vehicle such as an automobile, and a sedan type is shown in the figure. A trunk lid 1 a as a rear door for opening and closing the trunk room is provided at the rear of the vehicle 1. The vehicle 1 is equipped with a smart entry system.

  This smart entry system receives a smart key 2 as a portable device that transmits a unique identification code (ID code), and an ID code transmitted from the smart key 2, and is installed near the door handle or the door handle. By detecting the ON of the opener switch being used, the passenger door that opens and closes when the passenger gets on and off is unlocked, and the ON or OFF of the request switch installed near the door handle or the door handle is detected. Thus, a smart entry control unit (smart entry ECU) 11 is provided as control means for locking the boarding door.

  The smart key 2 is provided with a door lock switch 2a, a door unlock switch 2b, and a trunk unlock switch 2c, and a built-in control unit mainly composed of a CPU. This control unit includes a receiving antenna that receives a request signal transmitted from a vehicle-mounted transmitting antenna provided in the vehicle 1, an ID signal that includes the ID code described above, and a door lock signal when each of the switches 2a to 2c is turned on. A transmitting antenna for transmitting a door unlock signal and a trunk unlock signal is provided. And if the receiving antenna receives the request signal transmitted from the vehicle-mounted transmitting antenna provided in the vehicle, the ID signal including the ID code is transmitted from the transmitting antenna. This ID signal is received by the vehicle-mounted receiving antenna provided in the vehicle 1, and the smart entry ECU 11 controls locking / unlocking of the entrance / exit door and the trunk lid 1 a according to the received signal.

  The smart entry ECU 11 is mainly composed of a microcomputer, and determines whether or not to permit the opening of the trunk lid 1a in addition to the above-described entry / exit door and the function of locking / unlocking the trunk lid 1a. A trunk open determining unit 11a as a door open determining unit is provided. Note that the control for locking / unlocking the entrance / exit door and the trunk lid 1a is the same as in the prior art, and the description thereof is omitted here.

  On the input side of the trunk open determination unit 11a, a seating sensor 12 that detects that the driver is seated in the driver's seat, a seat belt switch 13 that detects whether the driver's seat belt is attached or detached, and an operating state of the parking brake are detected. Parking brake switch 14, shift position sensor 15 as shift position detecting means for detecting the set position of the select lever, signal receiver 16 for receiving the ID signal output from the above-described smart key 2, and trunk lid 1a Is connected to a trunk opener switch 17 as a door opener switch. Further, an out-trunk transmitter 18 that transmits a request signal to the external smart key 2 is connected to the output side of the trunk open determination unit 11a. The operating area of the transmitter 18 outside the trunk is set to a radius of about 40 to 80 [cm] around the trunk opener switch 17 and outside the trunk lid 1a. Accordingly, when the smart key 2 is placed in the vehicle, the request signal is not received by the smart key 2.

  When the trunk open determination unit 11a receives an ON signal from the trunk opener switch 17, the trunk open determination unit 11a reads the ID code included in the ID signal transmitted from the smart key 2 after transmitting a request signal from the transmitter 18 outside the trunk, If it is authenticated, it is checked whether the driver is seated in the driver's seat. If it is determined that the driver is seated, the trunk lid 1a is prohibited from being opened, while the driver is seated in the driver's seat. If it is determined that the trunk lid 1a is not open, the trunk lid 1a is permitted to open.

  Specifically, the determination of whether or not to permit the opening of the trunk lid 1a performed by the trunk open determination unit 11a is executed in the trunk open determination routine shown in FIG. This routine is executed every predetermined calculation cycle. First, in step S1, the routine waits until the trunk opener switch 17 provided in the trunk lid 1a is turned on. If ON is detected, the process proceeds to step S2.

  In step S2, a request signal is transmitted from the transmitter 18 outside the trunk, and in step S3, the ID signal transmitted from the smart key 2 is detected to check whether the ID code is received. When the ID code is received, the process proceeds to step S4, where it is determined whether or not the ID code has been verified, and if it has been authenticated, the user (including the driver) who carries the smart key. It jumps to step S10, the trunk lid 1a is unlocked and the opening of the trunk lid 1a is permitted, and then the routine is exited. When the opening of the trunk lid 1a is permitted, the trunk lid 1a is unlocked and lightly opened. If not authenticated, the process proceeds to step S5. By the way, if the ID code is not authenticated and it is determined that the user is not a regular user and jumps to step S11, for example, the driver possesses a plurality of smart keys, and the vehicle When the smart key 2 of 1 is placed in the vehicle, the trunk lid 1a cannot be opened even though the smart driver 2 is an authorized driver, and convenience is impaired. Therefore, in this embodiment, in such a case, the process proceeds to step S5, and it is checked whether or not the trunk opener switch 17 is turned on in step S5 and subsequent steps. Note that the processing in steps S2 to S4 corresponds to the recognition means of the present invention.

  Then, when the process proceeds from step S3 or step S4 to step S5, it is checked whether or not the trunk lid 1a is in a locked state.

  By the way, as described above, when the trunk room is considered as a private space, it is preferable to maintain the locked state of the trunk lid 1a from the viewpoint of ensuring security even if the entrance door is unlocked. The smart key 2 must be carried, and the trunk lid 1a cannot be opened while the smart key 2 is placed in the vehicle. Therefore, in the present embodiment, even when the trunk lid 1a is closed, the locked state and the unlocked state are set. In the locked state, even if the trunk opener switch 17 is turned on, the trunk lid 1a The trunk lid is not opened, but only when certain conditions are satisfied even in the unlocked state, that is, when it is estimated that the trunk opener switch 17 is turned on by a legitimate driver. By opening 1a, both the security and convenience of the trunk room are satisfied.

  That is, in step S5, it is determined whether the trunk lid 1a is locked or unlocked. In the present embodiment, the trunk lid 1a is also unlocked in conjunction with the unlocking door being unlocked. Therefore, when the driver gets on, the trunk lid 1a is also unlocked, but the trunk lid 1a is kept closed.

  When the trunk lid 1a is in the locked state in step S5 described above, that is, when the entrance / exit door is also locked, the ON signal of the trunk opener switch 17 detected in step S1 described above is sent to a person other than the driver. It is determined that it is due to an operation, jumps to step S11, prohibits the opening of the trunk lid 1a, and exits the routine.

  On the other hand, when the trunk lid 1a is in the unlocked state in conjunction with the unlocking of the passenger door in step S5, the process proceeds to step S6. In steps S6 and S7, it is checked whether or not the driver is seated in the driver's seat. That is, if the driver has unlocked the entry / exit door and seating is not detected, the driver may be outside the vehicle. On the other hand, when the state of being seated in the driver's seat is detected, it is determined that the driver is in the vehicle. Accordingly, the processing in steps S6 and S7 corresponds to the seating determination means of the present invention.

  In step S6, whether or not the driver is seated in the driver's seat is determined based on a signal from the seating sensor 12 provided in the driver's seat. When the ON signal indicating that the signal level is equal to or higher than a predetermined threshold is output from the seating sensor 12, it is determined that the driver is seated, and the process jumps to step S11 to prohibit the opening of the trunk lid 1a. Exit the routine. In the state where the driver is seated in the driver's seat, the driver does not open at least the trunk lid 1a. Therefore, the ON signal of the trunk opener switch 17 detected in the above-described step S1 is a person other than the driver. It is determined that this is due to the above operation, jumping to step S11, prohibiting the opening of the trunk lid 1a, and exiting the routine.

  If an OFF signal indicating a predetermined threshold value or less is detected from the signal level of the seating sensor 12 in step S6, it is determined that the driver is away from the driver's seat, and the process proceeds to step S7. In step S7, when the signal from the seat belt switch 13 is read and an ON signal is detected, it is determined that the driver is seated in the driver's seat, jumps to step S11, prohibits the opening of the trunk lid 1a, Exit the routine. If the signal of the seat belt switch 13 is OFF, it is determined that the driver is away from the driver's seat, and the process proceeds to step S8.

  In steps S8 and S9, it is checked whether or not the vehicle 1 is stopped. Therefore, the processes in steps S8 and S9 correspond to the stop determination means of the present invention. First, in step S8, a signal from the parking brake switch 14 is read to check whether the parking brake is activated. When the parking brake switch 14 is ON, the driver is away from the driver's seat in a stopped state, and the ON signal of the trunk opener switch 17 detected in step S1 is assumed to have been operated by an authorized driver. Estimate, branch to step S10, permit the opening of the trunk lid 1a, and then exit the routine.

  On the other hand, if the parking brake switch 14 is OFF, the process proceeds to step S9, and it is checked from the output signal of the shift position sensor 15 whether the select lever is set in the P (parking) range. When the select lever is set to the P range, the driver is away from the driver's seat with the vehicle stopped, so the ON signal of the trunk opener switch 17 is estimated to have been operated by the driver. Then, the process proceeds to step S10, and after allowing the trunk lid 1a to be opened, the routine is exited. Further, when the select lever is set to a range other than the P range, for example, the D (drive) range, it is impossible to detect the state where the driver is seated in the driver's seat in the above-described step S6. However, since it is estimated that the driver is seated in the driver's seat, the process branches to step S11, prohibits the opening of the trunk lid 1a, and exits the routine. Thereby, the erroneous detection of the seating sensor 12 is prevented, and higher security can be ensured.

  Thus, in the present embodiment, the driver is seated in the driver's seat even in the unlocked state, compared to the conventional trunk lid 1a that is set to open uniformly when the unlocked state is reached. When the state is detected, it is determined that the trunk opener switch 17 has been turned on because it is not the driver, and the opening is prohibited. For example, when the vehicle 1 is stopped while waiting for a signal or the like, Security is ensured without being opened. When the passenger door is unlocked and the driver is not seated in the driver's seat, it is presumed that the driver has turned on the trunk opener switch 17 and the opening is permitted. Therefore, convenience can be secured.

  The present invention is not limited to the above-described embodiment. For example, as long as the sensor / switch can determine whether the driver is seated in the driver's seat, the seating sensor 12 and the seat belt are used. It is not limited to the switch 13. Further, in the case of the vehicle 1 that is not provided with the seating sensor 12, the processing in step S6 may be omitted.

  Further, the target vehicle 1 is not limited to the sedan type but may be a wagon type. In this case, the trunk lid 1a is replaced with the rear gate 1a and applied.

1 ... vehicle,
1a ... Trunk lid,
2 ... Smart key,
2a ... Door lock switch,
2b ... door unlock switch,
2c ... Trunk unlock switch,
11: Smart entry control unit,
11a ... Trunk open determination unit,
12 ... Seating sensor,
13 ... Seat belt switch,
14 ... Parking brake switch,
15 ... shift position sensor,
16 ... Signal receiver,
17 ... Trunk opener switch,
18 ... Transmitter outside trunk

Claims (4)

A door opener switch for opening the rear door of the vehicle from the outside of the vehicle;
A portable device that transmits an identification code;
Recognition means for recognizing the identification code from the portable device;
Seating determination means for determining whether a driver is seated in the driver's seat of the vehicle;
Door open determination means for determining whether or not to permit opening of the rear door when the door opener switch is turned on and the portable device in the vehicle is recognized by the recognition means;
The door open determination means includes
A smart entry system that prohibits the opening of the rear door when the seating detecting means detects the seating of the driver, and permits the opening of the rear door when the seating of the driver is not detected. The vehicle further comprises stop determination means for determining the stop state of the vehicle,
The door open determining means permits the opening of the rear door when the seating determining means determines that the driver is not seated and the stop determining means determines that the vehicle is stopped. 2. The smart entry system according to claim 1, wherein The smart entry system according to claim 1 or 2, wherein the seating determination means determines seating of the driver based on a signal from a seating sensor provided in a driver's seat or a seat belt switch. The smart entry system according to claim 2, wherein the stop determination means determines whether the vehicle is stopped based on a signal from a parking brake switch or a shift position detection means.

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