JP2013023010A - Smart key system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a smart key system having high user-friendliness.SOLUTION: The smart key system includes: reception means 20 receiving a high-frequency signal RF from a smart key 10 by an in-vehicle compartment antenna 21; and collation control means 30 collating the high-frequency signal, and the smart key system enables an engine 51 to be started by operating an engine switch 52 when the smart key is detected to be present in the vehicle compartment. The reception means uses the in-vehicle compartment antenna to confirm whether the high-frequency signal is received when the engine switch is turned off during the start of the engine. When the reception means does not receive the high-frequency signal, the collation control means announces that the smart key is not present in the vehicle compartment and whether the engine switch may be turned off, and announces a next-time engine starting method when the high-frequency signal is not authenticated through collation although the high-frequency signal is received by the reception means.

Description

  The present invention relates to a smart key system, and in particular, includes a receiving unit that receives a high-frequency signal from a smart key with a vehicle interior antenna, and a collation control unit that collates the received high-frequency signal. The present invention relates to a smart key system capable of starting an engine by operating an engine switch when presence is detected using a receiving unit and the collation control unit.

  2. Description of the Related Art Conventionally, there is known an information processing system that issues an alarm when it is detected that a smart key is taken out of a passenger compartment while the engine is started (see, for example, Patent Document 1). ).

JP 2010-208555 A

  However, in the configuration described in Patent Document 1 described above, when the passenger gets off with the smart key after starting the engine, a take-out alarm is issued, but the operation can be performed as it is. In such a case, if driving is performed again without a smart key in the passenger compartment and the engine switch is turned off after driving, a smart key that can be verified is required to turn the engine switch on again. Therefore, there is a problem that if the smart key is not received from the passenger who gets off the vehicle, the vehicle cannot be restarted.

  Therefore, the present invention urges attention to prevent the occurrence of a state where the smart key is not present in the vehicle interior after the engine is started, and the smart key is present in the vehicle interior, but the verification is not successful. An object of the present invention is to provide a smart key system that can prevent a user from getting into trouble by presenting a countermeasure even when engine restart is difficult.

In order to achieve the above object, a smart key system according to an aspect of the present invention includes a receiving unit that receives a high-frequency signal from a smart key with a vehicle interior antenna, and a collation control unit that collates the received high-frequency signal. In the smart key system in which the engine can be started by operating an engine switch when the reception of the smart key is detected using the receiving unit and the verification control unit.
When the engine switch is turned off during engine startup, the presence or absence of reception of the high-frequency signal is confirmed by the receiving means using the vehicle interior antenna,
When the receiving means does not receive the high-frequency signal, the verification control means performs notification to confirm that the smart key does not exist in the vehicle interior and whether the engine switch may be turned off,
When the receiving means receives the high-frequency signal, but the high-frequency signal is not authenticated by verification, control for notifying the next engine starting method is performed.

  ADVANTAGE OF THE INVENTION According to this invention, the trouble of the user accompanying the passenger taking out of a smart key and collation inability can be prevented effectively.

It is a functional block diagram showing an example of a smart key system according to an embodiment of the present invention. It is the flowchart which showed an example of the processing flow of the smart key system which concerns on the Example of this invention.

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.

  FIG. 1 is a functional block diagram illustrating an example of a smart key system according to an embodiment of the present invention. 1, the smart key system according to the present embodiment includes a smart key 10, an indoor tuner 20, a collation control means 30, a vehicle interior transmission antenna 40, an engine control means 50, an engine 51, and an engine switch 52. And a notification means 50. These components are provided in the vehicle except for the smart key 10.

  The smart key 10 is an electronic key that realizes locking and unlocking of a vehicle door and starting of the engine 51 by wireless communication without mechanical key insertion operation. The smart key 10 transmits a high-frequency signal RF toward the vehicle side, and when the code signal matches a predetermined code signal, an operation of locking and unlocking the door and an operation of starting the engine 51 are permitted. The

  The indoor tuner 20 is a vehicle-mounted receiving unit installed indoors, and receives the high-frequency signal RF transmitted from the smart key 10. The indoor tuner 20 includes a vehicle interior reception antenna 21, receives the high frequency signal RF transmitted from the smart key 10 by the vehicle interior reception antenna 21, and determines whether the smart key 10 exists in the vehicle. Confirm by.

  The collation control means 30 is a means for collating whether or not the high-frequency signal RF received from the smart key 10 matches a predetermined code signal, and for executing predetermined control associated with matching / mismatching. The collation control means 30 includes a CPU (Central Processing Unit) for performing signal collation and arithmetic processing for executing various controls, and performs a microprocessor that operates according to a program and predetermined arithmetic processing. You may comprise as electronic circuits, such as ASIC (Application Specific Integrated Circuit) to perform.

  Specifically, the collation control means 30 outputs a signal for allowing the engine to start to the engine control means 50 when the received high-frequency signal RF matches a predetermined code signal, and the engine switch 52 is turned on. Then, the engine 51 can be started.

  In addition, when the high frequency signal RF is not received in the vehicle interior or the high frequency signal RF is received but does not match the predetermined code signal, the verification control unit 30 uses the notification unit 60 to notify the user. Various notifications are made. Details of this point will be described later.

  Moreover, the collation control means 30 transmits a request signal from the vehicle interior transmission antenna 40. The high-frequency signal RF transmitted by the smart key 10 may be a response signal to the request signal. Further, the request signal may be transmitted as the low frequency signal LF.

  The vehicle interior transmission antenna 40 is a transmission antenna for vehicle interior communication provided in the vehicle interior. As described above, it is used when a request signal is transmitted to the smart key 10.

  The engine control means 50 is a control means for controlling driving including starting and stopping of the engine 51. The engine control means 50 receives the collation coincidence signal from the collation control means 30 and controls the engine 51 to a state where it can be started when the engine switch 52 is turned on. On the other hand, when the verification control means 30 receives a verification mismatch signal, the engine 51 is not allowed to start.

  The engine 51 is a drive source that drives the vehicle, and is started by an engine switch 52.

  The engine switch 52 is an engine start switch for starting the engine 51. The engine 51 can be started by the engine switch 52 by turning on the engine switch 52 alone or when the engine switch 52 is turned on with the foot brake depressed. Also good.

  The notification means 60 is a notification means for issuing a warning to the user or providing information. The notification unit 60 may include both or one of the display unit 61 and the speaker 62 as necessary. These may be provided alone, or may be incorporated in another meter or the like and used in combination with display means such as the meter. The display means 61 may be provided, for example, at a meter location.

  Next, the operation of the smart key system according to this embodiment having such a configuration will be described.

  FIG. 2 is a flowchart illustrating an example of a processing flow of the smart key system according to the embodiment of the present invention. Note that the constituent elements described so far are denoted by the same reference numerals, and the description thereof will be omitted.

  In FIG. 2, at the start, the ignition is turned on.

  In step 100, the engine switch 52 is pressed. In this case, normally, the ignition is immediately turned off, and when the passenger takes out the smart key 10 and the passenger such as the driver does not have the smart key 10, there is a possibility that the ignition cannot be turned on again. However, in this embodiment, the following control is performed to solve this problem.

  In step 110, a low frequency signal LF, which is a request signal, is transmitted from the vehicle interior transmission antenna 40.

  In step 120, the smart key 10 transmits a high-frequency signal RF that is a response signal, and the indoor tuner 20 confirms whether or not the high-frequency signal RF is received. The result of presence / absence of reception is sent to the collation control means 30. If it is determined in step 120 that no high frequency signal RF has been received, the process proceeds to step 130.

  In step 130, the collation control means 30 notifies the user using the notification means 60 that there is no smart key 10 in the passenger compartment. At this time, for example, the notification to the user may be displayed on the meter using the display unit 61 or may be notified to the user by voice using the speaker 62. Moreover, you may notify using both.

  In step 140, it is confirmed to the user whether or not the ignition can be turned off. In this case, the collation control means 30 may also confirm with the user using the notification means 60. For example, a display such as “IG-OFF?” May be displayed on the display means 61, or a confirmation such as “Can I turn off the ignition?” May be performed by voice.

  In step 140, if the user who has received the confirmation can turn off the ignition, the user presses the engine switch 52 again to turn off the ignition. In this case, since the user knows the situation by notification, the ignition is turned off by the user's intention. If the user determines that the ignition should not be turned off, the ignition is kept on, returns to the start of the processing flow, and repeats the flow of FIG.

  Such notification can prevent a situation in which the ignition cannot be turned on again when the user in the passenger compartment does not have the smart key 10. In addition, if a passenger is nearby and the user thinks that there is no problem even if the ignition is turned off, the ignition can be turned off as it is, and the user's degree of freedom according to the situation can be secured. it can.

  On the other hand, if it is determined in step 120 that the indoor tuner 20 receives the high-frequency signal RF and there is a high-frequency signal RF, the process proceeds to step 150.

  In step 150, it is determined whether or not the high-frequency signal RF from the smart key 20 matches the predetermined code signal. If it is determined that the collation between the high-frequency signal RF from the smart key 20 and the predetermined code signal matches, the ignition is turned off without any change from the normal operation, and the processing flow ends.

  On the other hand, if it is determined in step 150 that the high-frequency signal RF from the smart key 20 does not match the predetermined code signal, the process proceeds to step 160.

  In step 160, the user is notified that there is a possibility that the door cannot be locked, unlocked, engine started, etc. by the smart key 10 due to the jamming radio wave. In this case, in addition to smart lock / unlock / engine start using the smart key 10, the engine switch 52 can be turned on by a mechanical key, or the engine can be started by holding the smart key 10 over the start switch 52. Therefore, it will be explained that there is such a method of starting the engine. Note that the explanation may be displayed on the display means 61 in the meter, explained by voice using the speaker 62, or both explanations may be used together. Then, the ignition is turned off and the processing flow is ended.

  As described above, when the ignition is turned off, by explaining the engine starting method and means other than the engine starting using the smart key 10, the mechanical key can be used when the smart lock / unlocking / non-operating operation is started. Can be easily locked / unlocked by the computer, or backed-up operations such as starting the engine by holding the screen, making the smart key system more user-friendly and user-friendly. .

  The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the above-described embodiments, and various modifications and substitutions can be made to the above-described embodiments without departing from the scope of the present invention. Can be added.

  The present invention can be used for a smart key system used in a vehicle.

DESCRIPTION OF SYMBOLS 10 Smart key 20 Indoor tuner 21 Reception antenna 30 Collation control means 40 Car interior transmission antenna 50 Engine control means 51 Engine 52 Engine switch 60 Notification means 61 Display means 62 Speaker

Claims (1)

Receiving means for receiving a high-frequency signal from a smart key with a vehicle interior antenna; and collation control means for collating the received high-frequency signal, wherein the receiving means and the collation means that the smart key exists in the vehicle interior In a smart key system capable of starting an engine by operating an engine switch when detected using a control means,
When the engine switch is turned off during engine startup, the presence or absence of reception of the high-frequency signal is confirmed by the receiving means using the vehicle interior antenna,
When the receiving means does not receive the high-frequency signal, the verification control means performs notification to confirm that the smart key does not exist in the vehicle interior and whether the engine switch may be turned off,
A smart key system that performs control for notifying a next engine starting method when the receiving means receives the high-frequency signal but the high-frequency signal is not verified by verification.

Images