JP2017047867A - Electronic key system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electronic key system capable of preventing vehicle theft by utilizing a portable device carried around a user of a vehicle.SOLUTION: An electronic key system 1 is mainly constituted by: a vehicle 2; a portable machine 3 capable of mutually communicating with the vehicle 2; and a portable device 4 such as a smartphone and the like capable of mutually communicating with the portable machine 3. By operating the portable device 4 carried around a user of the vehicle 2, a function on state and a function off state of the electronic key system 1 in the portable machine 3 can be switched accordingly. By this system, even in the case where a third party tries vehicle theft by using a radio wave repeater, automatic reply of an ID signal (RF signal) from the portable machine 3 to the vehicle 2 is prevented, so that the vehicle theft is prevented.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an electronic key system that operates a function provided in a vehicle by mutual communication between the vehicle and the electronic key, and the electronic key and the portable device.

  In recent years, an electronic key that locks and unlocks a vehicle door and starts a vehicle engine based on an ID (authentication) verification result using wireless communication between the vehicle and an electronic key (hereinafter referred to as a “portable device”). The system is widespread. For example, a user having a portable device may lock and unlock a vehicle door by touching a vehicle door provided with a touch sensor without directly operating the vehicle using a vehicle key. it can.

  In this electronic key system, an LF band signal (hereinafter referred to as an “LF signal”) that requests a return of an ID code from the vehicle to the portable device at the timing when the user touches the vehicle door or periodically. ) And an RF band signal (hereinafter referred to as “RF signal”) for returning an ID code from the portable device to the vehicle. In the vehicle, the ID code transmitted from the portable device is collated with the master ID code stored on the vehicle side. When the collation is obtained, the vehicle door is locked and unlocked.

  Similarly, when the engine is started, the LF signal and the RF signal are transmitted and received between the vehicle and the portable device, and the ID code is collated in the vehicle.

JP 2007-153190 A

  In the conventional electronic key system described above, when the portable device receives the LF signal transmitted from the vehicle side, it automatically returns an ID code as an RF signal to the vehicle side, so this electronic key system is misused for vehicle theft. Concerns have been raised.

  Specifically, even when the user is away from the vehicle and the portable device owned by the user cannot receive the LF signal from the vehicle, the third party is located between the vehicle and the user's portable device. By relaying the LF signal from the vehicle to the portable device using the radio wave repeater, the portable device receives the LF signal and automatically returns the ID code as an RF signal to the vehicle side. Then, the third party relays the RF signal transmitted from the portable device to the vehicle using a radio wave repeater, so that the vehicle receives the RF signal and the ID code is collated in the vehicle.

  As a result, contrary to the intention of the user having the portable device, the vehicle door is unlocked, the engine of the vehicle can be started, and there is a great concern about the vehicle theft.

  The present invention has been made in view of the above circumstances, and uses a portable device such as a smartphone owned by the user to switch the function on state or the function off state of the electronic key system in the portable device, thereby Accordingly, it is an object of the present invention to provide an electronic key system that prevents vehicle theft using a radio wave repeater by transmitting an ID code as an RF signal from a portable device to the vehicle side.

  An electronic key system according to the present invention performs verification of an authentication code between a vehicle and a portable device capable of wireless communication with each other, and operates a function provided in the vehicle when verification of the authentication code is established In the system, the portable device is capable of wireless communication with a first transmission unit that transmits at least an authentication code signal including an authentication code of the portable device to the vehicle. First receiving means for receiving a function switching request signal of the first transmitting means transmitted from the portable device, and permission or non-permission of transmission of the authentication code signal to the vehicle by the first transmitting means. A transmission control unit for controlling the transmission of the authentication code signal by the first transmission means, or the control state of the transmission non-permission of the authentication code signal by the user. Operating the portable device, by the first receiving means for receiving said function switching request signal, characterized in that it is switched by the transmission control unit on the basis of the function switching request signal.

  In the electronic key system of the present invention, the portable device further includes second receiving means for receiving an authentication code request signal for requesting transmission of an authentication code of the portable device from the vehicle. When the transmission means is in the transmission non-permission control state, the authentication code signal is not transmitted to the vehicle even if the second reception means receives the authentication code request signal.

  In the electronic key system of the present invention, the portable device further includes a second transmission unit that transmits a function switching confirmation signal of the first transmission unit to the portable device. Receiving means for receiving the function switching confirmation signal from a portable device, and notification means for notifying the reception of the function switching confirmation signal, wherein the first transmission means is in the control state of transmission non-permission, When the second receiving unit receives the authentication code request signal, the second transmitting unit transmits the function switching confirmation signal to the portable device, and the receiving unit of the portable device transmits the function switching confirmation signal. Is received, the notification means notifies the user.

  In the electronic key system of the present invention, the portable device further includes display means for displaying information based on at least the function switching request signal or the function switching confirmation signal, and the receiving means of the portable device performs the function switching. When the confirmation signal is received, information based on the function switching confirmation signal is displayed by the display means together with the notification by the notification means.

  In the electronic key system of the present invention, when the function of locking a vehicle door provided in the vehicle is operated, the function switching request signal from the portable device is always transmitted by the transmission control unit to the first transmission unit. Is a signal for switching to the transmission non-permission control state.

  In the electronic key system of the present invention, the portable device further includes an operation means for operating a lock function of a vehicle door provided in the vehicle, and when the user operates the operation means, The first transmission means always transmits the authentication code signal to the vehicle even when one transmission means is in the transmission non-permission control state.

  The electronic key system according to the present invention mainly includes a vehicle, a portable device capable of wireless communication with the vehicle, and a portable device capable of wireless communication with the portable device, and the user operates the portable device. The function on state or function off state of the electronic key system of the portable device can be operated. With this electronic key system, the user can usually switch the function on state or the function off state of the electronic key system of the portable device using a portable device that is held in an easily accessible place. Is improved.

  In the electronic key system of the present invention, when the function of the electronic key system in the portable device is off, even if the portable device receives the authentication code request signal from the vehicle side, the authentication code signal is not automatically transmitted. Vehicle theft using a repeater can be prevented.

  Further, in the electronic key system of the present invention, for example, when a user having a portable device is in a location far away from the vehicle, the portable device receives an authentication code request signal from the vehicle side. There is also the possibility of vehicle theft being used, and it is possible to alert the user.

  In the electronic key system of the present invention, the function of the electronic key system in the portable device is in an off state. When the portable device receives an authentication code request signal from the vehicle side, the function of the electronic key system in the portable device is turned on. Whether or not to switch to is displayed, and the user can perform a switching operation and a maintenance operation of the function state of the electronic key system by a simple operation of the portable device.

  In the electronic key system of the present invention, in the case of a vehicle door locking operation, the electronic key system of the portable device is turned off after the locking operation in the vehicle, so that the vehicle theft using the radio wave repeater can be reliably performed. Can be prevented.

  Further, in the electronic key system of the present invention, when the vehicle door is locked through the operation button of the portable device, an authentication code signal is always transmitted even if the electronic key system function in the portable device is off. Thus, the user leaves the vehicle, but the vehicle door can be prevented from being stolen by reliably locking the vehicle door.

It is a figure explaining the schematic structure of the electronic key system of one embodiment of the present invention. It is a block diagram explaining the schematic structure of the electronic key system of one Embodiment of this invention. It is a flowchart explaining the process routine at the time of the unlocking request | requirement of the vehicle door in the electronic key system of one Embodiment of this invention. It is a flowchart explaining the processing routine at the time of the lock | rock request | requirement of the vehicle door in the electronic key system of one Embodiment of this invention. It is a flowchart explaining the processing routine at the time of the lock | rock request | requirement of the vehicle door in the electronic key system of one Embodiment of this invention. It is a flowchart explaining the processing routine which switches the function ON state of the electronic key system in a portable machine at the time of lock button operation of the portable machine in the electronic key system of one Embodiment of this invention, and a function OFF state.

  Hereinafter, an electronic key system according to an embodiment of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a diagram illustrating a schematic configuration of an electronic key system. FIG. 2 is a block diagram illustrating a schematic configuration of the electronic key system.

  As shown in FIG. 1, an electronic key system 1 of the present embodiment mainly includes a vehicle 2, an electronic key 3 (hereinafter referred to as “portable device 3”) capable of mutual communication with the vehicle 2, and a portable device. 3 and a portable device 4 such as a smartphone capable of mutual communication.

  Then, wireless communication is used as the mutual communication. For example, an LF (Low Frequency) band signal (hereinafter referred to as an “LF signal”) is transmitted from the vehicle 2 side to the portable device 3 side, and the portable device 3. An RF band signal (hereinafter referred to as “RF signal”) is transmitted from the vehicle side to the vehicle 2 side.

  In wireless communication between the portable device 3 and the portable device 4, for example, NFC (Near Field Communication) communication provided in the portable device 4 is used. Note that the wireless communication is not limited to those listed above.

  The electronic key system 1 is an ID that uses the above-described wireless communication between the vehicle 2 and the portable device 3 without being operated directly by an authorized user of the vehicle 2 (hereinafter referred to as “user”) using the vehicle key. (Authentication) This is a system for operating functions provided in the vehicle 2 based on the collation result. And as an example of the function with which the vehicle 2 is equipped, there exists a vehicle door lock and unlock, and the start of a vehicle engine.

  Further, as will be described in detail later, in the electronic key system 1, the user can set the function on state or the function off state of the electronic key system 1 in the portable device 3 by his / her own intention using the portable device 4. . When the user sets the electronic key system 1 of the portable device 3 to the function-off state, the portable device 3 requests an LF signal (hereinafter referred to as “ID request signal (LF signal)”) that requests an ID code from the vehicle 2. In the case of receiving the signal, the RF signal including the unique ID code of the portable device 3 (hereinafter referred to as “ID signal (RF signal)”) is not automatically returned.

  That is, the portable device 4 is usually carried at a position where it is easy for the user to take out, and the convenience of the user is enhanced by using the portable device 4, and the vehicle theft using a radio repeater by a third party is prevented. It becomes possible to do.

  As shown in FIG. 2, the vehicle 2 includes a control unit 10 that performs various controls, a communication unit 11 that has a transmission / reception function for performing wireless communication with the portable device 3, and a storage unit 12. The electronic control unit 28, the door lock actuator 13, the engine / power supply related actuator 14, the lock sensor 15, the unlock sensor 16, and the engine switch 17 are provided.

  The control unit 10 includes a computer having a CPU (Central Processing Unit), a ROM (Read Only Memory), a RAM (Random Access Memory), and the like, and executes various processes for vehicle control. And the control part 10 controls the door lock actuator 13 based on the input information from the lock sensor 15 and the unlock sensor 16 which are arrange | positioned at the vehicle door, and performs lock and unlock of a vehicle door. Further, the control unit 10 controls the engine / power supply related actuator 14 based on input information from the engine switch 17 disposed in the vicinity of the driver's seat, and executes start and stop of the vehicle engine.

  The communication unit 11 includes an LF transmission unit and an RF reception unit. For example, the LF transmitter transmits an ID request signal (LF signal) to the portable device 3 based on input information from the lock sensor 15. On the other hand, the RF receiver receives an ID signal (RF signal) transmitted from the portable device 3 side.

  The storage unit 12 includes a nonvolatile memory such as an EEPROM (Electrically Erasable Programmable Read-only Memory), and stores various data necessary for controlling the vehicle 2. In particular, the storage unit 12 stores a vehicle-side authentication ID code used for realizing the electronic key system 1, and the vehicle-side authentication ID code is the same information as the ID code stored on the portable device 3 side. It is said that.

  The door lock actuator 13 is an actuator for locking and unlocking the vehicle door, and includes, for example, a motor for driving the lock mechanism and unlock mechanism of the vehicle door.

  The engine / power supply related actuator 14 includes various actuators related to the engine, and includes, for example, a throttle actuator that drives a throttle valve, an injector that performs fuel injection, a cell motor that is used to start the engine, and the like.

  The lock sensor 15 and the unlock sensor 16 include, for example, a touch sensor disposed on a door handle outside the vehicle door. The lock sensor 15 senses an operation in which the user contacts a predetermined location on the upper surface of the door handle, and the unlock sensor 16 senses an operation in which the user grips the door handle.

  The engine switch 17 is a switch that is pressed when the user starts the vehicle engine or stops the vehicle engine.

  The portable device 3 is an electronic key that can be carried by the user as described above, and has a transmission / reception function for performing wireless communication between the control unit 18 that performs various controls and the vehicle 2 or the portable device 4. It has at least a communication unit 19, a storage unit 20, and a button 21 that operates to lock and unlock the vehicle door.

  The control unit 18 and the storage unit 20 are configured by, for example, an IC (Integrated Circuit) chip, and the storage unit 20 stores a unique ID code for identifying the portable device 3 itself. Further, the storage unit 20 stores whether the electronic key system 1 is in a function-on state or a function-off state.

  The control unit 18 controls the communication unit 19 and the storage unit 20 to receive an ID request signal (LF signal) from the vehicle 2 side. When the electronic key system 1 is in the function-on state, the control unit 18 automatically receives an ID signal ( RF signal) is transmitted to the vehicle 2 side.

  The communication unit 19 includes an LF transmission unit and an RF reception unit for performing wireless communication with the vehicle 2, and an NFC communication unit for performing short-range wireless communication with the mobile device 4, for example. Then, when the user operates the portable device 4, a signal for turning off the electronic key system 1 (hereinafter referred to as “function off request signal (NFC signal)”) from the portable device 4 side to the portable device 3 side. , The function of transmitting the ID signal (RF signal) from the portable device 3 side to the vehicle 2 side stops.

  That is, when the electronic key system 1 in the portable device 3 is in the function off state, the portable device 3 receives the ID request signal (LF signal) from the vehicle 2, but from the portable device 3 side to the vehicle 2 side. An ID signal (RF signal) is not sent back to.

  The button 21 includes at least a lock button and an unlock button for performing remote operation of locking and unlocking the vehicle door.

  The mobile device 4 is, for example, a smartphone owned by the user. For example, an NFC communication unit 23 for performing short-range wireless communication between the control unit 22 that performs various controls and the mobile device 3. , At least a button 24 for operating the portable device 4, a display unit 25 for displaying characters according to various operations, a microphone 26 for collecting sound, and a speaker 27 for outputting sound.

  Although details will be described later, the portable device 4 receives a signal for confirming whether or not the electronic key system 1 is in a function-on state (hereinafter referred to as a “function-on confirmation signal (NFC signal)”) from the portable device 3 side. Then, a predetermined sound is output from the speaker 27 and a switching operation screen of the electronic key system 1 is displayed on the display unit 25. Note that the notification method to the user is not limited to a method of outputting a predetermined sound from the speaker 27, and may be a notification method by vibration or the like.

  The LF signal is normally receivable when the distance from the vehicle 2 is within about 1 m, but when the user who owns the portable device 3 receives the LF signal at a location far away from the vehicle 2. Is highly likely to cause vehicle theft using a radio repeater by a third party and alerts the user. Subsequently, the user can turn off the function of the electronic key system 1 by a simple operation of the portable device 4. Can be maintained.

  The mobile device 4 is not limited to the above-described smartphone, and may be any device having a wireless communication function. For example, a mobile phone, a PDA (Personal Digital Assistant), or the like can be used.

  Next, a processing routine of the electronic key system when the user requests unlocking of the vehicle door will be described with reference to FIG. In the description of the flowchart of FIG. 3, the description of FIGS. 1 and 2 is referred to as appropriate.

  First, in the vehicle 2, for example, when the user grasps the door handle of the vehicle door on the driver's seat side of the stopped vehicle 2 and performs an unlocking operation (YES in step S10), the unlock sensor 16 detects. The control unit 10 controls the communication unit 11 and transmits an ID request signal (LF signal) to the portable device 3 side (step S11). When the user does not perform the unlocking operation of the vehicle door (NO in step S10), the transmission of the ID request signal (LF signal) linked to the unlocking operation of the user is not executed.

  Next, in the portable device 3, when the ID request signal (LF signal) is received (step S20), the control unit 18 controls the storage unit 20 to determine whether the electronic key system 1 is in the function off state. When the key system 1 is in the function-off state (YES in step S21), the control unit 18 controls the NFC communication unit of the communication unit 19 to confirm whether the electronic key system 1 is in the function-on state (hereinafter referred to as “key-on”). , “Function on confirmation signal (NFC signal)”) is transmitted to the portable device 4 side (step S22).

  Next, when the portable device 4 receives a function-on confirmation signal (NFC signal) (step S30), the control unit 22 controls the speaker 27, outputs a predetermined sound from the speaker 27, and sends a function-on confirmation signal to the user. It is notified that (NFC signal) has been received (step S31). Then, the control part 22 controls the display part 25, and displays the switching operation screen of the electronic key system 1 on the display part 25 (step S32).

  Then, when the user confirms the display unit 25 of the portable device 4 and operates the button 24 to select “Yes” that turns on the function of the electronic key system 1 (YES in step S33), the control unit 22 displays the display unit. 25, and the switching operation screen of the electronic key system 1 on the display unit 25 is terminated (step S34). Then, the control part 22 controls the NFC communication part 23, and transmits the function ON request signal (NFC signal) which changes the electronic key system 1 to a function ON state to the portable device 3 side (step S35).

  On the other hand, the user confirms the display unit 25 of the portable device 4 and does not select “Yes” that turns on the function of the electronic key system 1 (NO in step S33), and maintains the function off state of the electronic key system 1. If “NO” to be selected is not selected (NO in step S36) and a predetermined time has elapsed after the operation screen is displayed (YES in step S37), the control unit 22 controls the display unit 25, and the electronic key of the display unit 25 is displayed. The switching operation screen of the system 1 is ended (step S38).

  In addition, after the operation screen is displayed, the state where the switching operation screen of the electronic key system 1 is displayed on the display unit 25 continues for a predetermined time (NO in step S37). If “No” for maintaining the function-off state of the electronic key system 1 is selected (YES in step S36), the control unit 22 controls the display unit 25 and immediately switches the operation screen of the electronic key system 1 on the display unit 25. Is finished (step S38).

  Next, the portable device 3 transmits a function-on confirmation signal (NFC signal) to the portable device 4 side (step S22), and then receives a function-on request signal (NFC signal) (YES in step S23). The control unit 18 controls the storage unit 20, switches the electronic key system 1 to the function on state, and stores that the function is on (step S24). And the control part 18 controls RF transmission part and the memory | storage part 20 of the communication part 19, and transmits an ID signal (RF signal) to the vehicle 2 side (step S25).

  When the electronic key system 1 is in the function ON state (NO in step S21), the control unit 18 controls the RF transmission unit and the storage unit 20 of the communication unit 19, and automatically generates an ID signal (RF signal). It transmits to the vehicle 2 side (step S25).

  On the other hand, when a function-on confirmation signal (NFC signal) is transmitted to the portable device 4 side (step S22), and then a function-on request signal (NFC signal) is not received (NO in step S23), and a predetermined time has elapsed. (YES in step S26), the ID signal (RF signal) is not transmitted to the vehicle 2 side.

  In addition, after transmitting the function-on confirmation signal (NFC signal) to the mobile device 4 side (step S22), within a predetermined time (NO in step S26), the function-on request signal (NFC signal) from the mobile device 4 side. Wait for reception.

  Next, the vehicle 2 transmits an ID request signal (LF signal) to the portable device 3 side (step S11), and then receives an ID signal (RF signal) from the portable device 3 side (YES in step S12). The control unit 10 controls the storage unit 12 to perform a collation operation between the vehicle-side authentication ID code of the vehicle 2 and the received ID code. If the two ID codes match (YES in step S13). ), The control unit 10 controls the door lock actuator 13 to bring the vehicle door into an unlocked state (step S14).

  On the other hand, the ID request signal (LF signal) is transmitted to the portable device 3 side (step S11), and then the ID signal (RF signal) is not received from the portable device 3 side (NO in step S12) or both IDs. If the codes do not match (NO in step S13), the user starts again from the unlocking operation of the vehicle door.

  In FIG. 3, the processing routine of the electronic key system 1 at the time of request for unlocking the vehicle door has been described. However, the processing routine of the electronic key system 1 at the time of request for starting the vehicle engine is also other than the steps S10 and S14. This is the same processing routine. For example, when the vehicle engine is requested to start, an ID request signal (LF signal) is transmitted to the portable device 3 side by performing an operation in which the user depresses the engine switch 17 while the brake pedal of the vehicle 2 is depressed. The processing routine after step S11 is performed. When both ID codes coincide with each other by the ID collation work (YES in step S13), the control unit 10 controls the engine / power supply related actuator 14 to start the vehicle engine. For the description of the same processing routine, refer to the above description, and the description is omitted here.

  Next, a processing routine of the electronic key system when the user requests to lock the vehicle door will be described with reference to FIG. In the description of the flowchart of FIG. 4, the description of FIGS.

  In the following description, the processing routine for the area surrounded by the dotted line B in FIG. 4 is the same as the processing routine for the area surrounded by the dotted line A in FIG. The vehicle door locking operation is an operation for improving security for preventing the vehicle from being stolen, and the vehicle door locking operation is forcibly executed even when the electronic key system 1 is in the function-off state. Is good. Therefore, in the description of FIG. 4 below, when the portable device 3 receives the ID request signal (LF signal) (step S50), the processing routine for the area surrounded by the dotted line B is not executed, and the ID is automatically set. A case where a signal (RF signal) is transmitted to the vehicle 2 side (step S55) will be described.

  However, the present embodiment is limited to the case where the ID signal (RF signal) is forcibly transmitted to the vehicle 2 side even when the function of the electronic key system 1 is OFF, and the vehicle door locking operation is executed. Instead, as shown in the flowchart of FIG. 4, the processing routine for the region surrounded by the dotted line B may be executed. Note that the description of the processing routine for the area surrounded by the dotted line B in FIG. 4 refers to the description of the processing routine for the area surrounded by the dotted line A in FIG. 3, and the description thereof is omitted here. Steps S51 to S54 and Step S56 in FIG. 4 correspond to Steps S21 to S24 and Step S26 in FIG. 3, respectively, and Steps S70 to S78 in FIG. 4 correspond to Steps S30 to S38 in FIG. 3, respectively. To do.

  First, in the vehicle 2, for example, when the user touches a predetermined position on the upper surface of the door handle of the vehicle door on the driver's seat side of the vehicle 2 after getting off and performs a locking operation (YES in step S40), the lock sensor of the vehicle 2 is detected. 15 is detected, the control unit 10 controls the communication unit 11, and transmits an ID request signal (LF signal) to the portable device 3 side (step S41). When the user does not perform the locking operation of the vehicle door (NO in step S40), the transmission of the ID request signal (LF signal) linked to the locking operation of the user is not executed.

  Next, in the portable device 3, when the ID request signal (LF signal) is received (step S50), the control unit 18 controls the RF transmission unit and the storage unit 20 of the communication unit 19, and automatically receives the ID signal (RF signal). ) Is transmitted to the vehicle 2 side (step S55).

  Next, the vehicle 2 transmits an ID request signal (LF signal) to the portable device 3 side (step S41), and then receives an ID signal (RF signal) from the portable device 3 side (YES in step S42). Then, the control unit 10 controls the storage unit 12 to perform a collation operation between the vehicle-side authentication ID code of the vehicle 2 and the received ID code. If the two ID codes match (YES in step S43). ), The control unit 10 controls the door lock actuator 13 to lock the vehicle door (step S44).

  On the other hand, an ID request signal (LF signal) is transmitted to the portable device 3 side (step S41), and thereafter an ID signal (RF signal) is not received from the portable device 3 side (NO in step S42) or ID collation work If the two ID codes do not coincide with each other (NO in step S43), the user starts again from the lock operation of the vehicle door.

  Next, the processing routine of the electronic key system when the user requests to lock the vehicle door will be described with reference to FIG. In the description of the flowchart of FIG. 5, the description of FIGS.

  The vehicle door locking operation shown in FIG. 5 may be continued after the vehicle door locking operation in step S44 of the flowchart described with reference to FIG. It is possible to prevent the vehicle theft described above by turning off the key system 1.

  First, in the vehicle 2, after the vehicle door is locked (step S44), the control unit 10 controls the communication unit 11 to check whether the electronic key system 1 is in the function off state (LF). Signal) is transmitted to the portable device 3 side (step S45).

  Next, when the portable device 3 receives the function off confirmation signal (LF signal) (step S57), the control unit 18 controls the storage unit 20 to determine whether the electronic key system 1 is in the function off state, When the electronic key system 1 is in the function on state (NO in step S58), the control unit 18 controls the NFC communication unit of the communication unit 19 to confirm whether the electronic key system 1 is in the function off state ( Hereinafter, “function off confirmation signal (NFC signal)” is transmitted to the portable device 4 side (step S59).

  When the electronic key system 1 is in the function off state (YES in step S58), the control unit 18 controls the storage unit 20 to maintain the function off state of the electronic key system 1.

  Next, when the portable device 4 receives the function off confirmation signal (NFC signal) (step S77), the control unit 22 controls the speaker 27, outputs a predetermined sound from the speaker 27, and notifies the user of the function off confirmation signal. It is notified that (NFC signal) has been received (step S78). Then, the control part 22 controls the display part 25, and displays the switching operation screen of the electronic key system 1 on the display part 25 (step S79).

  Then, when the user confirms the display unit 25 of the portable device 4 and operates the button 24 to select “Yes” that turns off the function of the electronic key system 1 (YES in step S80), the control unit 22 displays the display unit. 25, and the switching operation screen of the electronic key system 1 on the display unit 25 is terminated (step S81). Thereafter, the control unit 22 controls the NFC communication unit 23 to send a signal for changing the electronic key system 1 to the function off state (hereinafter referred to as “function off request signal (NFC signal)”) to the portable device 3 side. Transmit (step S82).

  On the other hand, the user confirms the display unit 25 of the portable device 4 and does not select “Yes” that turns off the function of the electronic key system 1 (NO in step S80), and maintains the function on state of the electronic key system 1. If “NO” to be selected is not selected (NO in step S83), and the predetermined time has elapsed after the operation screen is displayed (YES in step S84), the control unit 22 controls the display unit 25, and the electronic key of the display unit 25 is displayed. The switching operation screen of the system 1 is ended (step S85). Thereafter, the control unit 22 controls the NFC communication unit 23 to forcibly transmit a function off request signal (NFC signal) to the portable device 3 side (step S82).

  In addition, after the display of the switching operation screen, the state where the switching operation screen of the electronic key system 1 is displayed on the display unit 25 continues for a predetermined time (NO in Step S84). If “No” for maintaining the function-on state of the electronic key system 1 is selected (YES in step S83), the control unit 22 controls the display unit 25 and immediately switches the operation screen of the electronic key system 1 on the display unit 25. Is finished (step S86).

  Next, the portable device 3 transmits a function off confirmation signal (NFC signal) to the portable device 4 side (step S59), and then receives a function off request signal (NFC signal) (YES in step S60). The control unit 18 controls the storage unit 20 to switch the electronic key system 1 to the function off state, and stores that the function is in the off state (step S61).

  On the other hand, when a function off confirmation signal (NFC signal) is transmitted to the portable device 4 side (step S59), and after that, a function off request signal (NFC signal) is not received (NO in step S60) and a predetermined time has elapsed. (YES of step S62), the control part 18 controls the memory | storage part 20, performs the switch to the function-off state of the electronic key system 1, and memorize | stores that it is a function-off state (step S61).

  In addition, after transmitting the function off confirmation signal (NFC signal) to the portable device 4 side (step S59), within a predetermined time (NO in step S62), the function off request signal (NFC signal) from the portable device 4 side. Wait for reception.

  Next, a processing routine of the electronic key system in the portable device 3 when the lock button provided in the portable device 3 is operated will be described with reference to FIG. In the description of the flowchart of FIG. 6, the description of FIGS.

  As described above, the portable device 3 has at least a lock button and an unlock button as the operation buttons 21, and the user can directly operate the lock button and the unlock button around the vehicle 2. By pressing the button, the vehicle door can be locked and unlocked remotely.

  In the portable device 3, when the user presses any button 21 provided on the portable device 3 and operates the button (step S90), the control unit 18 controls the storage unit 20, and the electronic key system 1 is turned off. Whether the function is on or the function is on is determined. If the function is off, switching to the function on state is executed and the fact that the function is on is stored (step S91).

  When the user presses the lock button of the portable device 3 and operates the button (YES in step S92), the control unit 18 controls the RF transmission unit and the storage unit 20 of the communication unit 19 to request the lock of the vehicle door. A request ID signal (RF signal) is transmitted to the vehicle 2 side (step S93). Since the subsequent processing routine on the vehicle 2 side is the same as that after step S42 described with reference to FIG. 4, the description is referred to and the description is omitted here.

  Then, the control part 18 controls the memory | storage part 20, performs switching to the function-off state of the electronic key system 1, and memorize | stores that it is a function-off state (step S94).

  On the other hand, for example, when the user presses an unlock button other than the lock button of the portable device 3 and operates the button (NO in step S92), the control unit 18 controls the RF transmission unit and the storage unit 20 of the communication unit 19. Then, an unlock request ID signal (RF signal) for requesting unlocking of the vehicle door is transmitted to the vehicle 2 side (step S95). In this case, the electronic key system 1 is not switched to the function off state. Further, since the subsequent processing routine on the vehicle 2 side is the same as that after step S12 described with reference to FIG. 3, the description is referred to and the description is omitted here.

DESCRIPTION OF SYMBOLS 1 Electronic key system 2 Vehicle 3 Portable machine 4 Portable apparatus 10 Control part 11 Communication part 12 Storage part 13 Door lock actuator 14 Engine / power supply related actuator 15 Lock sensor 16 Unlock sensor 17 Engine switch 18 Control part 19 Communication part 20 Storage part 21 button 22 control unit 23 NFC communication unit 24 button 25 display unit 26 microphone 27 speaker 28 electronic control unit

Claims (6)

In an electronic key system that performs verification of an authentication code between a vehicle and a portable device capable of wireless communication with each other, and operates a function provided in the vehicle by verification verification of the authentication code,
A first transmitting means for transmitting an authentication code signal including at least an authentication code of the portable device to the vehicle;
First receiving means capable of wireless communication with each other and receiving a function switching request signal of the first transmitting means transmitted from a portable device of a user of the portable device;
A transmission control unit that controls permission or non-permission of transmission of the authentication code signal to the vehicle by the first transmission means,
The control state of the transmission permission of the authentication code signal by the first transmission unit or the control state of the transmission non-permission is set by the user operating the portable device, and the first reception unit requests the function switching request. An electronic key system that is switched by the transmission control unit based on the function switching request signal by receiving a signal. The portable device further includes second receiving means for receiving an authentication code request signal for requesting transmission of an authentication code of the portable device from the vehicle,
When the first transmission means is in the transmission non-permission control state, the second reception means does not transmit the authentication code signal to the vehicle even if the authentication code request signal is received. The electronic key system according to claim 1. The portable device further includes second transmission means for transmitting a function switching confirmation signal of the first transmission means to the portable device,
In the portable device, receiving means for receiving the function switching confirmation signal from the portable device;
Notification means for notifying reception of the function switching confirmation signal,
When the first transmission unit is in the transmission non-permission control state and the second reception unit receives the authentication code request signal, the second transmission unit transmits the function switching confirmation signal to the mobile phone. The electronic key system according to claim 2, wherein the electronic key system is transmitted to a device, and when the receiving unit of the portable device receives the function switching confirmation signal, the notification unit notifies the user. The portable device further includes display means for displaying information based on at least the function switching request signal or the function switching confirmation signal,
4. The electronic key according to claim 3, wherein when the receiving unit of the portable device receives the function switching confirmation signal, the display unit displays information based on the function switching confirmation signal together with the notification by the notification unit. system.   When operating a vehicle door lock function provided in the vehicle, the function switching request signal from the portable device always switches the transmission control unit to the transmission non-permission control state. The electronic key system according to any one of claims 1 to 4, wherein the electronic key system is a signal. The portable device further includes operation means for operating a lock function of a vehicle door provided in the vehicle,
When the user operates the operation unit, the first transmission unit always transmits the authentication code signal to the vehicle even when the first transmission unit is in the transmission non-permission control state. The electronic key system according to claim 1.

Images