JP2018145615A - On-vehicle equipment control method using key system and key system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve security of a key system for executing an actuation of on-vehicle equipment at least including unlocking and locking of a door, by using an electronic key and a portable terminal having a key function.SOLUTION: Portable terminal authentication processing includes: first authentication processing for performing authentication of an identification code wirelessly transmitted from a portable terminal 200 by an on-vehicle electronic key 130; and second authentication processing for, in the case where the first authentication processing is established, transmitting the identification code to an electronic key authentication ECU 120 from the on-vehicle electronic key 130 and performing authentication of the identification code transmitted from the on-vehicle electronic key 130 by the electronic key authentication ECU 120. According to the result of the second authentication processing, the propriety of actuation of on-vehicle equipment is determined.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a method for controlling an in-vehicle device using a key system and a key system.

  As a vehicle electronic key system, one using a mobile phone as an electronic key is known (see, for example, Patent Documents 1 and 2). In the electronic key system for a vehicle described in Patent Document 1, a verification ECU for verifying an ID acquired from a mobile phone is connected to the main body ECU and the engine ECU via a network. Can directly transmit signals to the main body ECU and the engine ECU, and locking / unlocking the door lock and starting the engine are permitted.

JP 2011-231567 A JP-A-2005-290900

  In the vehicle electronic key system described in Patent Document 1 or the like, if the accuracy of ID verification by the verification ECU cannot be ensured, the security of the main body ECU and the engine ECU cannot be ensured, not only unlocking the door lock, There was a problem that the engine could be executed illegally until the engine was started.

  The problem to be solved by the present invention is to improve the security of a key system that uses an electronic key and a portable terminal having a key function to execute an operation of an in-vehicle device including at least door unlocking and locking. It is possible to provide a method for controlling an in-vehicle device using a key system and a key system.

The present invention determines whether to permit operation of an in-vehicle device including at least door unlocking and locking according to a result of electronic key authentication processing for authenticating an ID code wirelessly transmitted from an electronic key, and has a key function. In the key system for determining whether the operation of the in-vehicle device is permitted or not according to the result of the mobile terminal authentication process for authenticating the ID code wirelessly transmitted from the mobile terminal having the above mobile terminal authentication process,
Authentication of the ID code wirelessly transmitted from the mobile terminal is performed by the on-vehicle mobile terminal authentication device, and when the authentication process is established, the ID code is transmitted from the mobile terminal authentication device to the electronic key authentication device, The above problem is solved by performing authentication of the ID code transmitted from the mobile terminal authentication device by the electronic key authentication device and determining whether the operation of the in-vehicle device is permitted or not according to the result of the authentication processing.

  According to the present invention, the mobile terminal authentication process is performed via the electronic key authentication process, so that the door is unlocked and locked using the electronic key and the mobile terminal having a key function. It is possible to improve the security of the key system that executes the operation of the in-vehicle device including the above.

It is a figure showing the outline of the vehicles to which the key system concerning one embodiment of the present invention is applied. In the key system of this embodiment, it is a flowchart which shows the process in the case of performing unlocking | locking of a door lock and engine starting using a portable terminal. In the key system of this embodiment, it is a flowchart which shows the process in the case of performing locking of a door lock using a portable terminal after an engine stops. It is a figure which shows the outline of the vehicle to which the key system which concerns on other embodiment is applied. In the key system of other embodiments, it is a flow chart which shows processing in the case of performing unlocking of a door lock, and starting of an engine using a personal digital assistant. It is a figure which shows the outline of the vehicle to which the key system which concerns on other embodiment is applied. In the key system of other embodiments, it is a flow chart which shows processing in the case of performing unlocking of a door lock, charge of a portable terminal, and starting of an engine using a non-contact IC card. It is a figure which shows the outline of the vehicle to which the key system which concerns on other embodiment is applied.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a diagram showing an outline of a vehicle 1 to which a key system 100 according to an embodiment of the present invention is applied. As shown in this figure, the vehicle 1 of this embodiment includes a body control device (BCM: Body Control Module) 2, an engine control device (ECM: Engine Control Module) 3, a steering control device 4, and a brake control device. 5, various control devices such as a transmission control device (TCM: Transmission Control Module) 6 and a skid prevention device (VDC: Vehicle Dynamics Control) 7. These control devices are communicably connected via an in-vehicle LAN 8 such as a CAN (Controller Area Network).

  The body control device 2 controls various functions such as a keyless function, an engine start function, a timer function, and a safety function. Examples of the keyless function include a passive keyless function, a remote control keyless function, a door lock / unlock function, and the like. The passive keyless function is a function of detecting that the user holding the electronic key 110 has touched the door lever and operating the door lock motor 21 to unlock / lock the door. The remote control keyless function is a function that detects that the user has operated the open / close switch of the electronic key 110 and activates the door lock motor 21 to perform unlocking / locking of the door. The door lock / unlock function is a function for unlocking / locking the door without requiring user operation. As a door lock / unlock function, when the vehicle accelerates to a predetermined speed or more, the door lock motor 21 is operated to lock the door, and when the shift enters the P range, the door lock motor 21 is operated to open the door. The function etc. which lock can be illustrated.

  An example of the engine start function is a push engine start function. The push engine start function detects the presence of the electronic key 110 in the passenger compartment based on the strength of the radio wave output from the electronic key 110 and detects that the brake switch is turned on. When it is detected that the engine start button 22 has been operated, this function starts the engine.

  Examples of the timer function include a function for managing the lighting time of the room lamp and a function for managing the operation timing of the battery saver. Moreover, the function etc. which manage the pneumatic pressure of a tire can be illustrated as a safety function.

  The vehicle 1 according to the present embodiment has a keyless function corresponding to use of a portable communication terminal (hereinafter referred to as a portable terminal) 200 such as a smartphone or a mobile phone in addition to a keyless function and an engine start function corresponding to the use of the electronic key 110. With function and engine start function. The key system 100 of this embodiment realizes these keyless function and engine start function. The key system 100 will be described later.

  The engine control device 3 is a controller that executes operation control of the engine 31. The engine control device 3 controls the engine 31 so as to realize the required driving force according to the accelerator operation amount and the required driving force output from the skid prevention device 7 or the like. The vehicle 1 may be a vehicle including only an engine (internal combustion engine) as a travel drive source, or may be a hybrid vehicle including a combination of an engine and an electric motor as a travel drive source. The vehicle 1 may be an electric vehicle (including a fuel cell vehicle) that includes only an electric motor as a travel drive source. In such a case, the vehicle 1 includes a motor control device instead of the engine control device 3. Further, the vehicle 1 may be an automatic driving vehicle that travels in an automatic operation. In such a case, the engine control device 3 and the motor control device are controlled so that the required driving force output from the automatic operation control device is realized.

  The steering control device 4 is a controller that executes control of the electric power steering motor 41. The steering control device 4 controls the electric power steering motor 41 so as to realize the target steering angle output from the automatic driving control device 10 or the like. The electric power steering motor 41 is a steering actuator attached to a steering column shaft (not shown).

  The brake control device 5 is a controller that executes control of the brake unit 51. The brake control device 5 controls the brake unit 51 so as to realize the required braking force output from the automatic driving control device 10, the skid prevention device 7, or the like.

  The transmission control device 6 is a controller that controls an automatic match transmission (AT) 61. The transmission control device 6 calculates the optimum gear from the vehicle speed, the accelerator opening, the shift position, etc. so as to realize the required driving force output from the automatic operation control device 10, the skid prevention device 7, etc. Shift control is executed.

  The skid prevention device 7 uses various sensors to monitor the driving operation of the driver and the movement of the vehicle for the purpose of preventing the skid of the vehicle, and outputs the required driving force to the engine control device 2 according to the running state of the vehicle. The required braking force is output to the brake control device 5.

  The key system 100 includes an electronic key 110, an electronic key authentication ECU 120, an in-vehicle electronic key 130, and a mobile terminal 200. The electronic key 110 includes an unlock button 111A, a lock button 111B, a communication device 112, and a control device 113. The key system 100 according to the present embodiment supports a passive keyless function and a remote control keyless function as keyless functions. When the unlock button 111A and the lock button 111B are operated by the user, the remote control keyless function is executed. The The control device 113 includes a memory that stores an ID code.

  The electronic key authentication ECU 120 is provided in the vehicle 1 and includes a communication device 121 and a control device 122. The communication device 121 always transmits an ID code request signal inside and outside the vehicle. As a frequency band of the radio wave transmitted by the communication device 121, an LF (Low Frequency) band can be exemplified. When the communication device 112 of the electronic key 110 receives the ID code request signal, the control device 113 of the electronic key 110 transmits the ID code signal from the communication device 112 to the communication device 121 of the electronic key verification ECU 120. When the unlock button 111A or the lock button 111B is turned on, the control device 113 of the electronic key 110 sends the ID code signal from the communication device 112 to the electronic key authentication ECU 120 together with the door lock unlocking / locking command. Transmit to the communication device 121. An example of the frequency band of the radio wave transmitted by the communication device 112 of the electronic key 110 is a UHF (Ultra High Frequency) band.

  The control device 122 of the electronic key authentication ECU 120 is connected to the body control device 2 via the in-vehicle LAN 8. The control device 122 includes a memory that stores an ID code. When the ID code authentication process is executed by the communication device 121 and the ID code authentication is established, a signal for permitting the keyless function is sent to the in-vehicle LAN 8. Is transmitted to the body control device 2 via. As a result, the body control device 2 unlocks / locks the door lock when the user holds or touches the door lever or operates the unlock button 111A or the lock button 111B. In addition, the control device 122 outputs a signal for permitting the engine start function when the intensity of the radio wave carrying the ID code signal is within a predetermined range corresponding to the radio wave intensity when the electronic key 110 is present in the vehicle. And transmitted to the body control device 2 via the in-vehicle LAN 8. As a result, the body control device 2 starts the engine when the engine start button 22 is operated with the brake switch turned on.

  The mobile terminal 200 according to the present embodiment is a smartphone in which application software for executing processing of the key system 100 is installed, and includes an input device 201, a communication device 202, and a control device 203. Examples of the input device 201 include a touch panel that can input a command by a user operation, a microphone that can be input by a user's voice, and the like. The commands input by the input device 201 include unlocking / locking the door lock of the vehicle 1 and starting the engine. Note that the command input by the input device 201 may include the start of an air conditioner, the opening and closing of a door window, and the like. The control device 203 includes a memory that stores an ID code.

  When a command for unlocking / locking the door lock is input in the input device 201, the control device 203 sends a signal corresponding to the input command from the communication device 202 to the communication device 131 of the in-vehicle electronic key 130 described later. An ID code signal is transmitted. As a communication standard between the communication device 202 of the mobile terminal 200 and the communication device 131 of the in-vehicle electronic key 130, a short-range wireless communication standard such as Bluetooth (registered trademark) or infrared communication can be exemplified.

  The in-vehicle electronic key 130 is installed at a predetermined position in the vehicle 1 and includes a communication device 131, a communication device 132, and a control device 133. The communication device 131 receives a command signal for unlocking / locking the door lock and the ID code signal transmitted from the communication device 202 of the portable terminal 200 within a communicable range. The communication device 132 has the same configuration as the communication device 112 of the electronic key 110, receives an ID code request signal from the communication device 121 of the electronic key authentication ECU 120, and receives a command signal and ID code for unlocking / locking the door lock. The signal is transmitted to the communication device 121. The frequency band of the radio wave transmitted by the communication device 132 of the in-vehicle electronic key 130 is the same as that of the communication device 112 of the electronic key 110 described above, and can be exemplified by a UHF (Ultra High Frequency) band.

  Here, the in-vehicle electronic key 130 is a unit having a configuration in which the control device (113) of the electronic key 110 is replaced with the control device 133 and the communication device 131 is added to the electronic key 110 in comparison with the electronic key 110. As described above, the in-vehicle electronic key 130 includes the communication device 132 common to the communication device 112 of the electronic key 110, and is wirelessly transmitted between the communication device 132 and the communication device 121 of the electronic key verification ECU 120. The ID code request signal and the ID code signal, and the ID code request signal and the ID code signal wirelessly transmitted between the communication device 112 of the electronic key 110 and the communication device 121 of the electronic key verification ECU 120 are common. . That is, the electronic key verification ECU 120 performs a common ID code authentication process for the electronic key 110 and the portable terminal 200.

  The control device 133 includes a door lock control circuit 1331, an engine start control circuit 1332, and a power switch 1333. The door lock control circuit 1331 includes a memory that stores an ID code, performs authentication processing of the ID code received by the communication device 131 from the communication device 202 of the mobile terminal 200, and when the ID code authentication is established, the door lock The lock / unlock command signal and the ID code signal are transmitted from the communication device 132 to the communication device 121 of the electronic key verification ECU 120. Here, the intensity of the radio wave output from the communication device 132 by the door lock control circuit 1331 is set so as not to fall within a predetermined range corresponding to the radio wave intensity when the electronic key 110 is present in the vehicle. .

  The control device 122 of the electronic key authentication ECU 120 executes authentication processing of the ID code signal received by the communication device 121. When the authentication is established, the control device 122 sends a door lock unlocking / locking command signal to the body control via the in-vehicle LAN 8. Transmit to device 2. Here, since the strength of the radio wave output from the communication device 132 of the in-vehicle electronic key 130 is not included in the predetermined range corresponding to the radio wave strength when the electronic key 110 is present in the vehicle, the electronic key authentication is performed. The control device 122 of the ECU 120 does not transmit a signal permitting engine start to the body control device 2. As a result, the body control device 2 unlocks / locks the door lock while prohibiting the engine from starting. Here, the door lock control circuit 1331 is always supplied with power from the power source 1334 and executes ID code authentication processing.

  The power switch 1333 turns on / off the power supply from the power source 1334 to the engine start control circuit 1332. The power switch 1333 is controlled by a door lock control circuit 1331. The door lock control circuit 1331 turns on the power switch 1333 when the authentication of the ID code signal received by the communication device 131 is established and the door lock is unlocked. On the other hand, the door lock control circuit 1331 turns off the power switch 1333 when the authentication of the ID code signal received by the communication device 131 is not established or when the door lock is locked.

  When the power switch 1333 is turned on, the engine start control circuit 1332 transmits an ID code signal from the communication device 132 to the communication device 121 of the electronic key authentication ECU 120. Here, the intensity of the radio wave carrying the ID code signal is set to fall within a predetermined range corresponding to the radio wave intensity when the electronic key 110 is present in the vehicle. Therefore, the control device 122 of the electronic key authentication ECU 120 executes an authentication process of the ID code signal received by the communication device 121. When authentication is established, a signal for permitting engine start is sent via the in-vehicle LAN 8 to the body control device. 2 to send. As a result, the body control device 2 starts the engine when the engine start button 22 is operated with the brake switch turned on.

  The door lock control circuit 1331 prohibits locking of the door lock when the door 31 lock command signal and the ID code signal are transmitted from the communication device 202 of the portable terminal 200 to the communication device 131 while the engine 31 is on. To do. On the other hand, the door lock control circuit 1331 receives the door lock locking command signal and the ID from the communication device 202 of the portable terminal 200 to the communication device 131 until a predetermined time elapses after the engine 31 is turned off. When the code signal is transmitted, the received ID code signal is authenticated, and when the authentication is established, the power switch 1333 is turned off. When the engine 31 is off and the power switch 1333 is off, the door lock control circuit 1331 sends a door lock locking command signal and an ID code from the communication device 132 to the communication device 121 of the electronic key verification ECU 120. Send signal. The control device 122 of the electronic key authentication ECU 120 executes authentication processing of the ID code signal received by the communication device 121. When authentication is established, a signal for a door lock locking command is sent to the body control device 2 via the in-vehicle LAN 8. Send. Thus, the body control device 2 locks the door lock when the engine 31 is off, the power switch 1333 is off, and authentication of the ID code by the electronic key authentication ECU 120 is established.

  The door lock control circuit 1331 transmits a warning command signal from the communication device 131 to the communication device 202 of the portable terminal 200 when the predetermined time has elapsed since the engine 31 was turned off. When the communication device 202 receives a warning command signal, the control device 203 of the portable terminal 200 generates a warning sound or displays a warning display.

  FIG. 2 is a flowchart showing processing when the unlocking of the door lock and the starting of the engine 31 are executed using the mobile terminal 200 in the key system 100 of the present embodiment. First, in step 1, the door lock control circuit 1331 determines whether or not the communication device 131 of the in-vehicle electronic key 130 has received the door lock unlock command signal and the ID code signal from the communication device 202 of the mobile terminal 200. judge. If the determination is affirmative, proceed to Step 2.

  In step 2, the door lock control circuit 1331 executes an authentication process of the ID code received by the communication device 131 of the in-vehicle electronic key 130. If the authentication is established, the process proceeds to step 3, and if the authentication is not established. Return to step 1. In step 3, the door lock control circuit 1331 transmits a door lock unlock command signal and an ID signal from the communication device 132 to the communication device 121 of the electronic key authentication ECU 120. The control device 122 of the electronic key authentication ECU 120 executes authentication processing of the ID code received by the communication device 121 and transmits a door lock unlock command signal to the body control device 2 via the in-vehicle LAN 8. The body control device 2 operates the door lock motor 21 to unlock the door lock.

  Next, in Step 4, the door lock control circuit 1331 turns on the power switch 1333. Next, in step 5, the engine start control circuit 1332 transmits an ID code signal from the communication device 132 to the communication device 121 of the electronic key authentication ECU 120. In this step, the intensity of the radio wave transmitted from the communication device 132 (hereinafter referred to as a predetermined radio wave intensity) is the intensity of the radio wave transmitted from the electronic key 110 when the electronic key 110 is present in the vehicle as described above. Equivalent to. Therefore, in this step, the electronic key 110 is in the same state as that in the vehicle.

  Next, in step 6, the control device 122 of the electronic key authentication device 120 executes an authentication process for the ID code received by the communication device 121, and proceeds to step 7 when the authentication of the ID code is established. In step 7, the control device 122 of the electronic key authentication ECU 120 transmits a signal permitting engine start to the body control device 2 via the in-vehicle LAN 8. As a result, the body control device 2 starts the engine 31 when the brake switch is on and the engine start button 22 is on. The process ends here.

  FIG. 3 is a flowchart showing processing when the door lock is executed using the portable terminal 200 after the engine 31 is stopped in the key system 100 of the present embodiment. First, in step 11, the door lock control circuit 1331 determines whether or not the engine 31 is off. If the determination is affirmative, the process proceeds to step 12. When the engine 31 is turned off from on, the body control device 2 unlocks the door lock. Next, in step 12, the door lock control circuit 1331 determines whether or not a predetermined time has elapsed since the engine 31 was turned off. If the determination is affirmative, the process proceeds to step 20. If the determination is negative, the process proceeds to step 13.

  In step 20, the door lock control circuit 1331 transmits a warning command signal by voice or display from the communication device 131 to the communication device 202 of the portable terminal 200. As a result, when a predetermined time elapses after the engine 31 is stopped and the door is locked, a warning is given to the user such as the owner of the vehicle 1 via the portable terminal 200. Return from step 21 to step 11.

  On the other hand, in step 13, the door lock control circuit 1331 determines whether a door lock locking command signal and an ID code signal are transmitted from the communication device 202 of the mobile terminal 200 to the communication device 131. If the determination is affirmative, the process proceeds to step 14, and if the determination is negative, the process returns to step 12. In step 14, the door lock control circuit 1331 executes an authentication process for the ID code signal received by the communication device 131. If the authentication is established, the process proceeds to step S15. If the authentication is not established, the process returns to step 12. In step 15, the door lock control circuit 1331 turns off the power switch 1333.

  Next, in step 16, the door lock control circuit 1331 transmits a door lock locking command signal and an ID code signal from the communication device 132 to the communication device 121 of the electronic key authentication ECU 120. Next, in step 17, the control device 122 of the electronic key verification ECU 120 executes authentication processing of the ID code signal received by the communication device 121. When authentication is established, the door lock locking command signal is sent to the in-vehicle LAN 8. To the body control device 2. Next, in step 18, the body control device 2 locks the door lock when the engine 31 is off, the power switch 1333 is off, and collation of the ID code in the electronic key collation ECU 120 is established. To do. The process ends here.

  As described above, in the present embodiment, in the authentication process of the mobile terminal 200 that authenticates the ID code wirelessly transmitted from the mobile terminal 200, the authentication of the ID code wirelessly transmitted from the mobile terminal 200 is performed. When the ID code authentication is established, the ID code signal is transmitted from the in-vehicle electronic key 130 to the electronic key authentication ECU 120, which is the authentication device for the electronic key 110. The electronic code authentication ECU 120 authenticates the ID code. Then, in accordance with the result of the authentication process in the electronic key authentication ECU 120, whether or not the vehicle-mounted device including at least the door unlocking and locking is permitted is determined.

  That is, the authentication process of the portable terminal 200 is performed via an electronic key authentication process that is conventionally installed in a vehicle and secures. Accordingly, it is possible to improve the security of the key system 100 that uses the electronic key 110 and the portable terminal 200 to execute the operation of the in-vehicle device including at least the unlocking and locking of the door. Here, when a signal for instructing the operation of the in-vehicle device is transmitted directly from the portable terminal 200 to the body control device 2, an advanced security function is required on the body control device 2 side. According to the key system 100 of the embodiment, security equivalent to that of a key system using a conventional electronic key (without using a portable terminal) is ensured without adding a security function to the body control device 2 side. Can do.

  Further, in the present embodiment, the electronic key authentication ECU 120 is shared by the authentication process of the electronic key 110 and the authentication process of the portable terminal 200, and wirelessly transmitted from the electronic key 110 to the electronic key authentication ECU 120 from the in-vehicle electronic key 130. The same signal as the signal is transmitted wirelessly. Accordingly, the key system 100 of the present embodiment has a configuration in which an in-vehicle electronic key 130 is added using an electronic key authentication ECU 120 that has been conventionally mounted on a vehicle, in comparison with a conventional key system. Therefore, it is possible to configure the key system 100 of the present embodiment by attaching the in-vehicle electronic key 130 to the vehicle 1 that has already been sold and on which the conventional key system is mounted.

  Further, in the present embodiment, the engine 31 is allowed to start only when the door lock is unlocked and locked and the door lock is unlocked. Therefore, it is possible to prevent the engine 31 from being started even though the door lock is locked, and the security can be improved.

  In the present embodiment, the engine control circuit 1332 is turned on only when unlocking and locking the door lock is permitted and the door lock is unlocked. Thereby, although the vehicle-mounted electronic key 130 is always present in the vehicle, only when the door lock is unlocked, the electronic key 110 is in the same state as in the vehicle. Therefore, the engine 31 can be permitted to start only when the door lock is unlocked.

  In the present embodiment, the door lock is permitted only when the engine start control circuit 1332 is powered off. Thus, the user can be prevented from locking the door lock and leaving the vehicle 1 in a state where the engine 31 is operating or the on-vehicle electronic key 130 is on.

  In the present embodiment, the authentication ECU of the mobile terminal 200 is unitized as the in-vehicle electronic key 130, so that it can be easily attached to the vehicle 1.

  FIG. 4 is a diagram illustrating an outline of a vehicle 1 to which a key system 300 according to another embodiment is applied. The key system 300 shown in this figure allows a user who is the owner of the vehicle 1 to be given authority to operate on-vehicle equipment such as door unlocking and locking to other users. In addition, the key system 300 permits, for example, only the door unlocking and locking, or the time and the number of times to be granted to the authority granted from the user who is the owner of the vehicle 1 to another user. It is possible to add restrictions.

  The communication device 202 of the portable terminal 200 carried by the user who is the owner of the vehicle 1 and the communication device 202 of the portable terminal 200 carried by another user are communicably connected via wireless communication. As a communication standard between the mobile terminals 200, 4G and LTE can be exemplified. Further, the mobile terminals 20 may be connected to each other by a wide area communication network using a specific frequency of 900 MHz or less.

  In the mobile terminal 200 carried by the user who is the owner of the vehicle 1, a command for granting the authority to operate the in-vehicle device can be input by the input device 201. This command only allows doors to be unlocked and locked, restricts other vehicle equipment operations such as starting the engine, and limits the number of door unlocking and locking operations and the operation time. It is possible to add restrictions on the number of times and the like.

  In the portable terminal 200 carried by the user who is the owner of the vehicle 1, when a command for giving the authority to operate the in-vehicle device is input by the input device 201, the control device 203 is carried by the communication device 202 from another user. A command signal for granting the authority to operate the in-vehicle device is transmitted to the communication device 202 of the portable terminal 200. In the mobile terminal 200 carried by another user, when the communication device 202 receives the command signal, the input device 201 can input a command for operating the in-vehicle device including unlocking and locking the door. Here, when restrictions on the type, number of times, and time of in-vehicle devices that are permitted to be operated are given to the authority of operation of the in-vehicle devices, the commands that can be input with the input device 201 are within the limited authority range. Limited within.

  FIG. 5 is a flowchart showing processing when the unlocking of the door lock and the starting of the engine 31 are executed using the portable terminal 200 in the key system 300 of the present embodiment. First, similarly to the above-described embodiment, the processes of steps 1 to 4 are executed. Next, in step 31, the engine start control circuit 1332 determines whether or not the command for granting the authority to operate the in-vehicle device received by the communication device 131 includes the authority to start the engine. If the determination is affirmative, the process proceeds to step 5; if the determination is negative, the process ends without transmitting an ID code signal from the communication device 132 of the in-vehicle electronic key 130 to the communication device 121 of the electronic key authentication ECU 120. . In other words, if the command for granting the authority to operate the in-vehicle device does not include the authority for starting the engine, the process is terminated without allowing the engine to start. On the other hand, when the command for granting the authority to operate the in-vehicle device includes the authority for starting the engine, steps 5 to 7 are executed, and the engine is allowed to start. The process ends here.

  As described above, in the key system 300 according to the present embodiment, the in-vehicle device that the user who owns the vehicle 1 has from the mobile terminal 200 of the user who is the owner of the vehicle 1 to the mobile terminal 200 of the other user. It is possible to transmit authorization information including an ID code for granting the authority of the operation to other users. In the key system 300 according to the present embodiment, when the authorization information is transmitted from the mobile terminal 200 of the user who is the owner of the vehicle 1 to the mobile terminal 200 of another user, the authentication process of the mobile terminal 200 is performed. Executed. Thereby, the user who is the owner of the vehicle 1 equipped with the key system 300 of the present embodiment can lend the vehicle 1 to other users, and the key system 300 of the present embodiment can be used for car sharing, It can be applied to a vehicle used in a rental car or the like.

  In addition, the key system 300 according to the present embodiment includes authority restriction information for restricting the authority to operate the in-vehicle device from the portable terminal 200 of the user who is the owner of the vehicle 1 to the portable terminal 200 of the other user. Authorization information can be sent. In the key system 300 according to the present embodiment, when authority grant information including authority restriction information is transmitted from the mobile terminal 200 of the user who is the owner of the vehicle 1 to the mobile terminal 200 of another user, the authority restriction is performed. In accordance with the information, whether or not the on-vehicle device is permitted to operate is determined. Thereby, the user who is the owner of the vehicle 1 equipped with the key system 300 of the present embodiment permits other users to unlock and lock only the door lock of the vehicle 1, for example, It is possible to allow the engine to be started only a predetermined number of times.

  FIG. 6 is a diagram illustrating an outline of a vehicle 1 to which a key system 400 according to another embodiment is applied. A key system 400 shown in this figure includes an NFC (Near Field Communications) system 410 that reads an ID code signal stored in a non-contact IC card (not shown), and a portable terminal charging terminal 420. The NFC system 410 transmits the ID code signal read from the non-contact IC card to the control device 133 of the in-vehicle electronic key 130. The mobile terminal charging terminal 420 is connected to a power source 1334.

  The door lock control circuit 1331 permits unlocking and locking of the door lock of the vehicle 1. In addition, when an ID code signal is transmitted from the NFC system 410, the door lock control circuit 1331 supplies power from the power source 1334 to the portable terminal charging terminal 420 or turns on the power source 1334. On the other hand, when the engine start control circuit 1332 receives an ID code signal from the mobile terminal 200 connected to the mobile terminal charging terminal 420, the engine start control circuit 1332 permits the engine to start.

  FIG. 7 is a flowchart showing processing in the key system 400 of the present embodiment when unlocking the door lock, charging the mobile terminal 200 and starting the engine 31 using a non-contact IC card. First, in step 41, the door lock control circuit 1331 determines whether an ID code signal is transmitted from the NFC system 410 or not. If an affirmative determination is made in this step, the door lock is unlocked and the routine proceeds to step 42.

  In step 42, the door lock control circuit 1331 supplies power from the power source 1334 to the portable terminal charging terminal 420. In addition, in this step, you may implement the electric power supply to all the vehicle equipment and terminals. Next, in step 43, the engine start control circuit 1332 receives the ID code from the portable terminal 200 to which the power is supplied from the power source 1334, and if received, executes the ID code authentication process and the authentication is established. If yes, the process proceeds to step 44. If authentication is not established, the process proceeds to step 45.

  In step 44, the engine start control circuit 1332 permits the engine to start. The process ends here. On the other hand, in step 45, the door lock control circuit 1331 determines whether or not a predetermined time T1 has elapsed since the door lock was unlocked. The predetermined time T1 is set to a time until the power required for restarting the mobile terminal 200 that has run out of charge, starting an application, and transmitting a signal is charged. If the determination is affirmative in this step, the process proceeds to step 46, and if the determination is negative, the process returns to step 42. In step 46, the door lock control circuit 1331 stops the power supply from the power source 1334 to the portable terminal charging terminal 420. The process ends here.

  As described above, in the key system 400 according to the present embodiment, the function of the non-contact IC card is limited to only permitting access to the vehicle 1 and power supply to the portable terminal 200, and the portable terminal 200. Only the owner of the vehicle is allowed to start the engine of the vehicle 1. Thereby, there exists an effect that the security of vehicle 1 can be improved.

  FIG. 8 is a diagram illustrating an outline of a vehicle 1 to which a key system 500 according to another embodiment is applied. In the key system 500 shown in this figure, a pair of electronic key authentication ECUs 120 are provided in the vehicle 1. One electronic key authentication ECU 120 is provided exclusively for authentication processing of the electronic key 110, and the other electronic key authentication ECU 120. Is provided exclusively for authentication processing of the mobile terminal 200. The communication device 121 included in the electronic key authentication ECU 120 for authentication processing of the portable terminal 200 is connected to the communication device 132 of the in-vehicle electronic key 130 via a wired line 501.

  The door lock control circuit 1331 of the in-vehicle electronic key 130 performs authentication processing of the ID code received by the communication device 131 from the communication device 202 of the mobile terminal 200, and when the ID code authentication is established, the door lock is locked / unlocked. The command signal and the ID code signal are transmitted from the communication device 132 to the communication device 121 of the electronic key verification ECU 120 through the wired line 501.

  The control device 122 of the electronic key authentication ECU 120 executes authentication processing of the ID code signal received by the communication device 121. When the authentication is established, the control device 122 sends a door lock unlocking / locking command signal to the body control via the in-vehicle LAN 8. Transmit to device 2. Here, since the ID code signal is not transmitted from the engine start control circuit 1332 to the communication device 121 of the electronic key authentication ECU 120 while the power switch 1333 is off, the body control device 2 unlocks / locks the door lock. On the other hand, starting of the engine is prohibited.

  When the power switch 1333 is turned on, the engine start control circuit 1332 transmits an ID code signal from the communication device 132 to the communication device 121 of the electronic key authentication ECU 120 through the wired line 501. The control device 122 of the electronic key authentication ECU 120 executes authentication processing of the ID code signal received by the communication device 121. When authentication is established, a signal permitting engine start is sent to the body control device 2 via the in-vehicle LAN 8. Send. As a result, the body control device 2 starts the engine when the engine start button 22 is operated with the brake switch turned on.

  As described above, in the key system 500 according to the present embodiment, the authentication process of the mobile terminal 200 is performed via an electronic key authentication process that is conventionally installed in a vehicle and ensures security. Accordingly, it is possible to improve the security of the key system 500 that uses the electronic key 110 and the portable terminal 200 to execute the operation of the in-vehicle device including at least the unlocking and locking of the door. Here, when a signal for instructing the operation of the in-vehicle device is transmitted directly from the portable terminal 200 to the body control device 2, an advanced security function is required on the body control device 2 side. According to the key system 500 of the embodiment, security equivalent to that of a key system using a conventional electronic key (without using a portable terminal) is ensured without adding a security function to the body control device 2 side. Can do.

  Further, the key system 500 of this embodiment has a configuration in which an electronic key authentication ECU 120 and an in-vehicle electronic key 130 are added in comparison with a conventional key system. Therefore, the key system 500 of this embodiment can be configured by attaching the electronic key authentication ECU 120 and the in-vehicle electronic key 130 to the vehicle 1 already sold and equipped with the conventional key system.

  The embodiment described above is described for facilitating the understanding of the present invention, and is not described for limiting the present invention. Therefore, each element disclosed in the above embodiment is intended to include all design changes and equivalents belonging to the technical scope of the present invention.

  For example, in the above-described embodiment, the operation of the in-vehicle device performed using the mobile terminal 200 is the unlocking / locking of the door lock and the engine start, but the mobile terminal 200 is used to start the air conditioner or the door window. You may open and close. In the above-described embodiment, the authentication device of the mobile terminal 200 is unitized as the in-vehicle electronic key 130. However, the communication device 131, 132 and the control device 133 may be individually provided in the vehicle 1 instead of being essential. . In addition, the configuration of the authentication device of the mobile terminal 200 can be changed as appropriate, such as adding an antenna for increasing the reception sensitivity from the mobile terminal 200 to the communication device 131.

1 Vehicle 100 Key System 110 Electronic Key 120 Electronic Key Authentication ECU
121 communication device 122 control device 130 vehicle-mounted electronic key 131 communication device 132 communication device 133 control device 1331 door lock control circuit 1332 engine start control circuit 1333 power switch 1334 power supply 200 portable terminal

Claims (9)

According to the result of the electronic key authentication process for authenticating the ID code wirelessly transmitted from the electronic key, whether to permit the operation of the in-vehicle device including at least the door unlocking and locking is determined, and from the portable terminal having the key function According to a result of a mobile terminal authentication process for authenticating a wirelessly transmitted ID code, a control method for an in-vehicle device using a key system that determines whether the operation of the in-vehicle device is permitted or not
The mobile terminal authentication process includes:
A first authentication process for performing authentication of an ID code wirelessly transmitted from the mobile terminal with an in-vehicle mobile terminal authentication device;
When the first authentication process is established, an ID code is transmitted from the mobile terminal authentication device to the electronic key authentication device, and the authentication of the ID code transmitted from the mobile terminal authentication device is performed using the electronic key. And a second authentication process performed by the authentication device for
A control method for an in-vehicle device using a key system that determines whether the operation of the in-vehicle device is permitted or not according to a result of the second authentication process. An in-vehicle device control method using the key system according to claim 1,
In the electronic key authentication process and the second authentication process, the electronic key authentication device is shared,
In the second authentication process, the same signal as the signal wirelessly transmitted from the electronic key is wirelessly transmitted from the first authentication device to the electronic key authentication device. . An in-vehicle device control method using the key system according to claim 1 or 2,
A method of controlling an in-vehicle device using a key system, which permits engine start only when door unlocking and locking are permitted and the door is unlocked. An in-vehicle device control method using the key system according to claim 3,
A vehicle-mounted device control method using a key system that turns on an engine start control circuit that determines whether engine start is permitted or not only when door unlocking and locking are permitted. An in-vehicle device control method using the key system according to claim 4,
A method for controlling an in-vehicle device using a key system, which permits door locking only when the engine start control circuit is powered off. A method for controlling an in-vehicle device using the key system according to any one of claims 1 to 5,
Authorization information including at least an ID code for granting the second user the authority to operate the in-vehicle device that the first user has from any one of the plurality of portable terminals to the other portable terminal Is transmitted, in the first authentication procedure, the ID code wirelessly transmitted from the other mobile terminal is authenticated by the mobile terminal authentication device, and the on-vehicle device control method using the key system. An in-vehicle device control method using the key system according to claim 6,
When the authority grant information including authority restriction information for restricting the authority of operation of the in-vehicle device is transmitted from any one of the plurality of portable terminals to the other portable terminal, the authority restriction information In response, a control method for an in-vehicle device using a key system that determines whether the operation of the in-vehicle device is permitted. A method for controlling an in-vehicle device using the key system according to any one of claims 1 to 7,
An in-vehicle device control method using a key system, in which an ID card authentication process is performed by an in-vehicle ID card reader, and door unlocking and locking are permitted according to the result of the ID card authentication process. According to the result of the electronic key authentication process for authenticating the ID code wirelessly transmitted from the electronic key, whether to permit the operation of the in-vehicle device including at least the unlocking and locking of the door is determined, and from the portable terminal having the key function According to a result of a mobile terminal authentication process for authenticating a wirelessly transmitted ID code, a key system for determining whether the operation of the in-vehicle device is permitted or not,
The mobile terminal authentication process includes:
A first authentication process for performing authentication of an ID code wirelessly transmitted from the mobile terminal with an in-vehicle mobile terminal authentication device;
When the first authentication process is established, an ID code is transmitted from the mobile terminal authentication device to the electronic key authentication device, and the authentication of the ID code transmitted from the mobile terminal authentication device is performed using the electronic key. And a second authentication process performed by the authentication device for
A key system that determines whether or not the vehicle-mounted device is permitted to operate according to a result of the second authentication process.

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