JP2010007457A - Smart key system for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enable a user to acquire an operating state by displaying an authenticated state based on smart key authentication and immobilizer authentication to the user in engine starting control using a smart key system for a vehicle. <P>SOLUTION: When smart key authentication fails, an operation display part 17c of an immobilizer 17 is lighted in a first mode. Consequently, the user can surely acquires a failure of the smart key authentication and recognize the necessity to carry out immobilizer authentication. The user carries out immobilizer authentication, and if the immobilizer authentication also fails, the operation display part 17c is lighted in a second mode. The user can thereby recognize that an engine starting failure is caused by the failure of the immobilizer authentication and that there is a possibility of a failure in at least one of the immobilizer 17 and a transponder 37. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a smart key system for a vehicle, and when an engine does not start due to a failure of smart key authentication, the user is authenticated by using an immobilizer and a smart key transponder, and at the same time, each operation state is displayed. The present invention relates to a smart key system for a vehicle that can grasp the presence / absence and the location of a failure.

  In general, a smart key system for a vehicle enables a user such as a driver or a vehicle owner to control the vehicle by wireless communication from a position close to the vehicle without using a mechanical key. For example, the system is used for unlocking and locking a vehicle door, starting a vehicle engine, and the like.

  When the engine is started using the smart key system, a start button for starting the engine is provided on the instrument panel in place of the existing key cylinder. When the user presses the start button to start the engine, the smart key system searches for the smart key wireless remote control that the user is carrying and performs user (smart key) authentication. When the user authentication confirms that the user is a registered user, the smart key system outputs a control signal for starting the engine to the engine ECU. Thereby, the engine can be started.

  FIG. 1 is a block diagram showing the configuration and operation process of a general vehicle smart key system. As shown in FIG. 1, in the smart key system 100 for a vehicle, when a user presses a start button (1), an engine start (START) display unit is lit, and the smart key module 110 is turned on (2). ). Then, the smart key module 110 searches the smart key wireless remote controller 130, receives the user authentication code from the smart key wireless remote controller 130, and performs wireless authentication (3).

  Here, an LF (Low Frequency) transmitter 113 is arranged in each part of the vehicle, and the ECU 111 of the smart key module 110 performs LF authentication from each LF transmitter 113 in order to search for the smart key wireless remote controller 130 described above. Send a request signal.

  When the smart key wireless remote controller 130 receives the LF authentication request signal through the LF receiver 135, the microcomputer 131 transmits the registered user information to the smart key module 110 through the RF (Radio Frequency) transmitter 133. To do. In the smart key module 110, when the RF receiver 115 receives the RF signal and the user authentication is completed, the ECU 111 outputs a control signal for starting the engine to the engine ECU 150 (4).

  In FIG. 1, reference numeral 117 denotes an immobilizer provided in the smart key module 110, and 137 denotes a transponder provided in the smart key wireless remote controller.

  FIG. 2 is a block diagram schematically illustrating an operation process when the smart key authentication of the vehicle smart key system of FIG. 1 fails. As shown in FIG. 2, when the wireless authentication using the smart key fails (3), the smart key wireless remote control 130 with the transponder 137 built-in must be inserted into the slot of the immobilizer 117 in order to perform the immobilizer authentication. Must be (4). The reason why the smart key wireless remote controller 130 is inserted into the slot is that user authentication with the transponder 137 can be performed by the operating coil of the immobilizer 117.

  That is, when the smart key wireless remote controller 130 is inserted into the slot in order to bring the actuation coil built in the slot close to the transponder 137, the actuation coil turns on the transponder 137 and sends an authentication code for user authentication to the immobilizer 117. Authenticate while sending and receiving.

  More specifically, there are cases where smart key authentication cannot be performed, for example, when the battery of the smart key wireless remote control 130 has run out or when the surrounding radio wave environment is poor (there is strong noise). In such a case, immobilizer authentication is performed using the transponder 137 and the immobilizer 117 of the smart key wireless remote controller 130. Communication between the immobilizer 117 and the transponder 137 is started when an operation coil of the immobilizer 117 generates an electromagnetic wave. When receiving the electromagnetic wave from the working coil, the transponder 137 obtains electric power from the electromagnetic wave and transmits the authentication code described above to the immobilizer 117.

  When the code authentication for the user is completed, the ECU 111 of the smart key module 110 transmits a control signal to the engine ECU 150 to start the engine, and the procedure for starting the engine proceeds (5).

  FIG. 3 is a block diagram schematically illustrating different operation processes when the smart key authentication of the vehicle smart key system of FIG. 1 fails. As shown in FIG. 3, when the wireless authentication fails (3), the smart key wireless remote control 130 with the transponder 137 is brought into contact with the start button part with the operation coil of the immobilizer 117 (4). . Then, the operating coil incorporated in the start button unit turns on the transponder 137, performs code authentication for the user through the immobilizer 117 (5), and proceeds with the procedure for starting the engine (6).

  However, in a vehicle equipped with a smart key system, even if user authentication for starting the engine fails due to an error in wireless authentication using the smart key, the user does not realize that user authentication has failed. There is. In such a situation, if the user repeatedly operates the start button without performing the procedure for starting the engine using the immobilizer, there is a possibility that it takes time to start the engine.

  The present invention has been devised to solve the above-described problems, and by displaying the authentication state by smart key authentication and immobilizer authentication to the user, the user can grasp the operation state, The smart key system for vehicles which can classify the presence or absence of a failure, and a failure location by this is provided.

In order to achieve the above object, a smart key system for a vehicle according to claim 1,
A smart key module mounted on the vehicle and a smart key wireless remote control carried by the user,
Smart key module
A transmitter for transmitting an authentication request signal when a start button for starting a vehicle engine is operated;
A receiver for receiving a smart key authentication code signal transmitted from the smart key wireless remote controller in response to the authentication request signal;
An ECU that performs smart key authentication based on the smart key authentication code signal received by the receiver;
An immobilizer that receives an immobilizer authentication code signal by communication with a smart key wireless remote controller when smart key authentication fails, and performs immobilizer authentication based on the immobilizer authentication code signal;
Smart key wireless remote control
A receiver for receiving the authentication request signal;
A transmitter that transmits a smart key authentication code signal when the authentication request signal is received by the receiver;
A transponder that transmits an immobilizer authentication code signal when communicating with the immobilizer,
Immobilizer
An operation display unit that is lit and displayed in a plurality of modes;
An operation coil provided in the vicinity of the operation display unit, which communicates with the transponder when the smart key wireless remote control approaches,
When the smart key authentication in the ECU fails, the operation display unit is lit in the first mode to inform the user that the smart key authentication has failed, and when the immobilizer authentication fails, the operation display unit is It is lit in the manner of 2 to inform the user that immobilizer authentication has failed.

  Thus, in the vehicle smart key system according to the first aspect, when the smart key authentication fails, the operation indicator is turned on in the first mode. Therefore, the user can surely grasp that the smart key authentication has failed and recognize that it is necessary to perform immobilizer authentication. When the immobilizer authentication is performed, if the immobilizer authentication fails, the operation display unit is turned on in the second mode. For this reason, the user can recognize that there is a possibility that at least one of the immobilizer and the transponder has a failure because the immobilizer authentication has failed because the engine cannot be started.

  As described in claim 2, when the immobilizer authentication is successful, the immobilizer preferably lights the operation display unit in the third mode to inform the user that the immobilizer authentication is successful. Thereby, in addition to the case where immobilizer authentication fails, the user can grasp the state when immobilizer authentication succeeds.

  Furthermore, as described in claim 3, the immobilizer displays the operation display unit until the smart key wireless remote controller comes close and starts communication for immobilizer authentication until the result of immobilizer authentication is obtained. It is preferable to illuminate in the manner of 4 to inform the user that the immobilizer is in operation. In this way, in addition to the immobilizer authentication result, the user can grasp whether the immobilizer is operating.

  According to a fourth aspect of the present invention, it is preferable that the operation display unit and the operation coil are installed at a position separated from the start button by a predetermined distance. Conventionally, the actuating coil of the immobilizer was provided on the engine start button. In this case, the smart key wireless remote control is likely to interfere with the start button, and the smart key wireless remote control is located at a position where the operating coil and the transponder can communicate In some cases, it was difficult to hold. On the other hand, as described in claim 4, the smart key wireless remote controller is held at a position where the operation coil and the transponder can communicate with each other by providing the operation display unit and the operation coil apart from the engine start button. Becomes easier.

  According to a fifth aspect of the present invention, the immobilizer may include an operation switch operated by a user, and the immobilizer may be configured to operate when the operation switch is operated. By providing such an operation switch, immobilizer authentication can be performed at an arbitrary timing.

  In addition, about the effect of Claims 6-9, since it is similar to Claims 1-5 mentioned above, description is abbreviate | omitted.

FIG. 1 is a block diagram showing a configuration and an operation process of a general vehicle smart key system. FIG. 2 is a block diagram schematically illustrating an operation assumption when the smart key authentication of the vehicle smart key system of FIG. 1 fails. FIG. 3 is a block diagram schematically illustrating an operation process different from that in FIG. 2 when smart key authentication of the vehicle smart key system in FIG. 1 fails. 1 is a block diagram illustrating a configuration and an operation process of a smart key system for a vehicle according to an embodiment of the present invention. FIG. 5 is a block diagram schematically illustrating an operation process according to the first embodiment when smart key authentication fails in the vehicle smart key system of FIG. 4. It is operation | movement explanatory drawing which showed the operation process of FIG. 5 in detail. FIG. 5 is a block diagram schematically illustrating an operation process according to a second embodiment when smart key authentication fails in the vehicle smart key system of FIG. 4. FIG. 8 is an operation explanatory diagram showing the operation process of FIG. 7 in detail. 4 is a flowchart illustrating an operation sequence of the smart key system for a vehicle according to the embodiment of the present invention. 10 is a flowchart illustrating in detail an immobilizer authentication process in the operational sequence of FIG. 9.

  According to the present invention, when an error occurs in wireless authentication of a smart key system in a vehicle equipped with a smart key system, an error occurrence signal is lit on an operation display section of an immobilizer provided apart from the start button. Then, when the user who has detected the error occurrence signal contacts the smart key wireless remote controller with the operation display unit, the operation coil of the immobilizer transmits a signal for searching for the transponder of the smart key wireless remote controller. The transponder of the smart key wireless remote controller receives the search signal and transfers code information for immobilizer authentication. The immobilizer receives the above code information and changes the lighting mode of the immobilizer operation display unit according to the authentication result, so that the user can visually distinguish the authentication state.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. FIG. 4 is a block diagram showing the configuration and operation process of the vehicle smart key system according to the embodiment of the present invention.

  As shown in FIG. 4, the vehicle smart key system 1 according to the present embodiment confirms and authenticates the user when the start button operated by the user to start the engine and the start button is operated. A smart key module 10 that outputs a signal for starting the engine to an engine ECU (Electronic Control Unit) 50, a smart key radio that transmits a user (smart key) code in response to an authentication request signal from the smart key module 10 A remote control 30 is included.

  The start button is a push button, and is toggled to an engine start (START) or engine stop (STOP) state every time a user operation is received.

  The smart key module 10 includes an LF transmitter 13 that transmits a request signal for user authentication to the smart key wireless remote controller 30, an RF receiver 15 that receives a response signal of the smart key wireless remote controller 30 for the user authentication request signal, When wireless authentication using a key is impossible, an immobilizer 17 that authenticates the transponder 37 and an ECU 11 that controls the above-described components 13, 15, and 17 are provided. The immobilizer 17 includes an operation coil 17a, an operation switch 17b, and an operation display unit 17c.

  The smart key wireless remote controller 30 includes a microcomputer 31, an RF transmitter 33, an LF receiver 35, and a transponder 37. When the transponder 37 receives an electromagnetic wave from the operating coil 17a of the immobilizer 17, the transponder 37 operates by obtaining electric power from the electromagnetic wave. Then, a calculation process is performed on the code signal from the actuation coil 17a, and the calculation result is transmitted to the immobilizer 17 as an authentication code for immobilizer authentication.

  In the vehicle smart key system configured as described above, when the user presses the start button (1), the smart key module 10 is turned on while the engine start (START) is emitted (2). Then, the smart key module 10 transmits an authentication request signal to the smart key wireless remote controller 30 and searches for the smart key wireless remote controller. When a user authentication code is received from the smart key wireless remote controller 30 in response to the authentication request signal, wireless authentication using the smart key is performed (3).

  That is, the LF transmitter 13 is disposed in each part of the vehicle, and the ECU 11 of the smart key module 10 transmits an LF authentication request signal from each LF transmitter 13 in order to search for the smart key wireless remote controller 30 described above. .

  When the smart key wireless remote controller 30 receives the LF authentication request signal through the LF receiver 35, the microcomputer 31 sends the registered user information (authentication code) to the smart key module 10 through the RF transmitter 133 by the RF signal. Send.

  In the smart key module 10, when the RF receiver 15 receives the RF signal, it outputs it to the ECU 11. The ECU 11 performs smart key authentication by confirming whether or not the user is a registered user (smart key) based on the received RF signal (authentication code).

  When it is determined that the user is a registered user in smart key module 10, authentication is completed, and ECU 11 outputs a control signal for starting the engine to engine ECU 50.

  On the other hand, when the smart key authentication using the LF signal and the RF signal fails, the immobilizer 17 and the transponder 37 are used to perform user authentication for starting the engine. User authentication (immobilizer authentication) using the immobilizer 17 and the transponder 37 will be described below.

  FIG. 5 is a block diagram schematically illustrating an operation process of the vehicular smart key system 1 according to the first embodiment when the smart key authentication fails in the vehicular smart key system 1 of FIG.

  As shown in FIG. 5, when the smart key authentication using the LF transmitter 13 and the RF receiver 15 of the smart key module 10 and the RF transmitter 33 and the LF receiver 35 of the smart key wireless remote controller 30 fails. The operation process is as follows.

  First, in FIG. 5, there is a possibility that the smart key wireless remote controller 30 cannot receive a signal from the LF transmitter 13 or the smart key module 10 cannot normally receive a signal from the RF transmitter 33. Yes, this may make wireless authentication impossible (3).

  Thus, when the smart key authentication through the RF signal and the LF signal fails, the user authentication for starting the engine must be performed using the immobilizer 17 and the transponder 37.

  In this case, first, the immobilizer 17 displays (4) the failure of the smart key authentication to the user through the operation display unit 17c. The user who senses (views) the user places the smart key wireless remote controller 30 at a position close to the immobilizer 17 (5) and performs an operation for performing immobilizer authentication (6).

  Here, when the transponder 37 comes close to the actuation coil 17a of the immobilizer 17, the immobilizer 17 is activated (turned on). Then, the transponder 37 receives the encryption code communicated by radio and performs the calculation.

  Then, the calculation result of the transponder 37 is received through the actuation coil 17a, and the ECU 11 determines the calculation result. At this time, if the immobilizer authentication is not successful due to a failure of the transponder 37 or the immobilizer 17, the operation display unit 17c is lit in red to notify the user of the failure of the immobilizer 17 on the operation display unit 17c ( 7).

  On the other hand, when the immobilizer authentication is successful, a control signal for starting the engine is output to the engine ECU 50, and at the same time, the operation display unit 17c is lit in blue so that the operation display unit 17c notifies the user of the authentication success. Display (7).

  Here, smart key authentication success, smart key authentication failure, immobilizer operation, immobilizer authentication success, and immobilizer authentication failure are displayed through the operation display unit 17c as shown in Table 1 below.

  As shown in Table 1 above, when the smart key authentication is successful, the engine can be started without any special operation by the user. No indication is displayed.

  However, when the smart key authentication fails, the user needs to position the smart key wireless remote controller 30 so as to be close to the operation coil 17a or to contact the operation display unit 17c. For this reason, the operation display unit 17c is lit periodically (intermittently) to inform the user that the smart key authentication has failed. Table 1 shows an example in which red illumination that means an alarm is periodically turned on, but illumination of other colors may be used instead of red.

  And while the immobilizer 17 is operating, red and blue illuminations are alternately turned on periodically. The reason for such lighting is to allow the user to confirm that the smart key wireless remote controller 30 is located in the vicinity of the operation display unit 17c and is communicating with the operation coil 17a. .

  When the immobilizer 17 fails in user authentication, the red illumination is lit continuously (continuously) so as to be distinguished from the above-described smart key authentication failure. On the other hand, when the immobilizer 17 succeeds in user authentication, the blue illumination is continuously turned on.

  Note that the above-described red and blue illumination colors can be changed to other colors, and any display method and display color may be used as long as the above four operation states can be classified. .

  FIG. 6 illustrates the operation process of FIG. 5 in detail. The actuating coil 17a is provided in the vicinity of the actuating display unit 17c provided apart from the start button (so as to surround the actuating display unit 17c). The operation display unit 17c includes two-color LEDs.

  As illustrated in FIG. 6, when the smart key authentication fails, red lighting due to the smart key authentication failure is periodically lit on the operation display unit 17 c, and the user recognizes this. Then, in order to enable communication between the transponder 37 of the smart key wireless remote controller 30 and the operating coil 17a of the immobilizer 17, the user moves the smart key wireless remote controller 30 to a proximity position of the operation display unit 17c. Thereby, the operation display unit 17c periodically and alternately turns on the red and blue illuminations to indicate that the immobilizer 17 is operating. When the immobilizer authentication is successful, the operation display unit 17c is lit in blue, and when the immobilizer authentication fails, the operation display unit 17c is lit in red.

  In this manner, the transponder 37 can be searched by the immobilizer 17 and the code authentication for starting the engine can be performed without additionally pressing the start button.

  FIG. 7 is a block diagram schematically illustrating an operation process of the vehicle smart key system 1 according to the second embodiment when the smart key authentication fails in the vehicle smart key system 1 of FIG. The second embodiment of the present invention is different from the first embodiment in that the immobilizer 17 is operated by the operation switch 17b.

  That is, when the user performs an operation of pressing the operation switch 17b provided in the operation display unit 17c, the operation of the immobilizer 17 is started. At this time, as in the first embodiment, the user positions the smart key wireless remote controller 30 so as to be close to the operation display unit 17c including the operation switch 17b. Thereby, the operation coil 17a of the immobilizer 17 and the transponder 37 of the smart key wireless remote controller 30 can communicate with each other.

  As described above, the operation switch 17b for operating the immobilizer 17 is provided, whereby the user can arbitrarily operate the immobilizer 17.

  FIG. 8 illustrates the operation process of FIG. 7 in detail. The operation coil 17a is provided in the vicinity of an operation display unit 17c provided apart from the start button, and the operation display unit 17c includes two-color LEDs. Furthermore, the operation switch 17b for operating the immobilizer 17 operated by the user is provided in the upper surface part of the operation | movement display part 17c.

  As shown in FIG. 8, when the smart key authentication fails, red lighting due to the smart key authentication failure is periodically lit on the operation display unit 17 c, and the user recognizes this. Then, the user presses the operation switch 17b in order to perform user authentication using the immobilizer 17.

  When the user positions the smart key wireless remote controller 30 so as to be close to the operating coil 17a, the operation display unit 17c periodically displays red and blue illuminations to indicate that the immobilizer 17 is operating. Illuminated alternately. When the immobilizer authentication is successful, the operation display unit 17c is lit in blue, and when the immobilizer authentication fails, the operation display unit 17c is lit in red.

  As described above, according to the second embodiment, it is possible to start the immobilizer 17 based on the user's operation, and thereby the transponder 37 is searched by the immobilizer 17 to perform code authentication for starting the engine. can do.

  FIG. 9 is a flowchart illustrating an operation procedure of the smart key system for a vehicle according to the first and second embodiments of the present invention, and FIG. 10 illustrates an immobilizer authentication process in detail in the operation procedure of FIG. This is a flowchart.

  First, as shown in FIG. 9, when the user authentication by the smart key system fails and the engine cannot be started, the immobilizer 17 periodically lights the operation display portion 17c, and an error occurs in the smart key system. Let the user know that The user who has recognized this brings the smart key wireless remote control 30 close to the operating coil 17a (as well as pressing the operating switch 17b). Then, the operation coil 17a of the immobilizer 17 built in the operation display unit 17c searches the transponder 37 built in the smart key wireless remote controller 30, and performs code authentication.

  More specifically, when the engine start button is operated (S11), the smart key module 10 starts operating (S13), and searches for the smart key wireless remote controller 30 by transmitting an LF signal (S15). In this way, smart key authentication is started (S20). In this smart key authentication, wireless authentication using the LF transmitter 13 and the RF receiver 15 of the smart key module 10 and the RF transmitter 33 and the LF receiver 35 of the smart key wireless remote controller 30 is performed. As a result of the smart key authentication performed by the smart key module 10, it is determined whether or not the smart key authentication has failed (S21).

  When it is determined that the smart key authentication has failed, the operation display unit 17c is turned on so that the red illumination is periodically turned on to notify the user that the smart key authentication has failed (S23). Thereafter, immobilizer authentication is started (S30). This immobilizer authentication will be described with reference to FIG. In addition, until immobilizer authentication is started and until the authentication result is obtained, the operation display unit 17c is turned on so that red and blue illuminations are alternately turned on periodically.

  When the operation switch 17b is operated by the user or when the smart key wireless remote controller 30 approaches the operation coil 17a built in the operation display unit 17c (S30-1), the immobilizer 17 operates (S30-2). The operating coil 17a of the immobilizer 17 is operated (S30-3).

  The transponder 37 is operated (turned on) by the operating coil 17a, receives the authentication code transmitted from the operating coil 17a (S30-4), and performs calculation. When the transponder 37 outputs and transmits the calculation result (immobilizer authentication code) (S30-5), the operating coil 17a of the immobilizer 17 receives it (S30-6).

  Returning to FIG. 9, based on the authentication code received by the operating coil 17a, the ECU 11 determines whether immobilizer authentication has failed (S31). When it is determined that immobilizer authentication has failed, the operation display unit 17c is continuously lit in red to notify the user that immobilizer authentication has failed (S35). On the other hand, when it is determined that the immobilizer authentication is successful, the operation display unit 17c is continuously lit in blue to notify the user that the immobilizer authentication is successful. These lightings are continued for a certain time or until the engine is started.

  When it is determined that the authentication is successful in steps S21 and S31 described above, a control signal for starting the engine is output from the ECU 11 of the smart key module 10 to the engine ECU 50 so that the engine is started. (S40).

  As described above, according to the vehicular smart key system according to the first and second embodiments, the user can use the vehicular smart key system based on the signal lit on the operation display unit 17c of the immobilizer 17. If there is a problem, you can recognize the problem. Accordingly, it is possible to replace the battery of the smart key wireless remote controller 30 or to provide a vehicle smart key system.

  In addition, although preferable embodiment of this invention was described, the scope of the present invention is not limited to such specific embodiment, and in the range which does not deviate from the scope of the invention described in the claims, Various modifications are possible.

1 Smart Key System for Vehicle 10 Smart Key Module 11 ECU
13 LF transmitter 15 RF receiver 17 Immobilizer 30 Smart key wireless remote control 31 Microcomputer 33 RF transmitter 35 LF receiver 37 Transponder 50 Engine ECU

Claims (9)

In a vehicle smart key system comprising a smart key module mounted on a vehicle and a smart key wireless remote control carried by a user,
The smart key module is
A transmitter for transmitting an authentication request signal when a start button for starting a vehicle engine is operated;
A receiver for receiving a smart key authentication code signal transmitted from the smart key wireless remote controller in response to the authentication request signal;
ECU for performing smart key authentication based on the smart key authentication code signal received by the receiver;
An immobilizer that receives an immobilizer authentication code signal by communication with the smart key wireless remote controller when the smart key authentication fails, and performs immobilizer authentication based on the immobilizer authentication code signal;
The smart key wireless remote control is
A receiver for receiving the authentication request signal;
A transmitter for transmitting the smart key authentication code signal when an authentication request signal is received by the receiver;
A transponder that transmits the immobilizer authentication code signal when communicating with the immobilizer,
The immobilizer is
An operation display unit that is lit and displayed in a plurality of modes;
An operation coil that is provided in the vicinity of the operation display unit and that communicates with the transponder when the smart key wireless remote control approaches,
When the smart key authentication in the ECU fails, the operation indicator is turned on in the first mode to inform the user that the smart key authentication has failed, and when the immobilizer authentication fails, the operation A smart key system for a vehicle characterized in that the display unit is lit in the second mode to inform the user that immobilizer authentication has failed.   The smart vehicle for a vehicle according to claim 1, wherein when the immobilizer authentication is successful, the immobilizer lights the operation display unit in a third manner to inform the user that the immobilizer authentication is successful. Key system.   The immobilizer lights up the operation display unit in the fourth mode until the smart key wireless remote controller comes close and starts communication for immobilizer authentication until the result of immobilizer authentication is obtained. The smart key system for a vehicle according to claim 1 or 2, wherein an immobilizer is informed to the vehicle.   The vehicle smart key system according to any one of claims 1 to 3, wherein the operation display unit and the operation coil are disposed at a predetermined distance from the start button.   5. The vehicle smart key system according to claim 1, wherein the immobilizer includes an operation switch operated by a user, and the immobilizer operates when the operation switch is operated. . A start button operated to drive the engine of the vehicle;
A smart key module mounted on a vehicle and equipped with an immobilizer for performing user authentication of the vehicle;
A smart key wireless remote control with a built-in transponder equipped with an authentication code for driving the engine,
The authentication code is wirelessly transferred from the smart key wireless remote control transponder to the smart key module immobilizer,
The immobilizer has an operation display unit installed at a predetermined distance from the start button, and the operation display unit is lit up when user authentication based on the authentication code fails. Smart key system for vehicles.   The immobilizer includes an operation coil provided in the operation display unit, and when the transponder comes close to the operation display unit, the immobilizer operates to perform user authentication based on the authentication code. The smart key system for vehicles according to claim 6.   8. The vehicle smart key system according to claim 7, wherein the immobilizer includes an activation switch operated by a user, and the immobilizer is activated when the activation switch is turned on.   9. The smart key system for a vehicle according to claim 8, wherein the operation display unit is lit in two or more colors and displays a failure of authentication by the smart key system and a state of authentication by the immobilizer.

Images