Vehicle theft prevention device

Abstract

To prevent theft of a vehicle when an engine is in an operation state, when there are a plural kind of keys including a smart key and a digital key, and when a user goes away from the vehicle while one key of them is left in the vehicle.SOLUTION: A travel restriction part 160 of a vehicle anti-theft device 100 executes, when the door lock operation is performed by a first key or a second key, a control to restrict traveling of a vehicle so as to restrict a shift lever from moving to the travel range. When an authentication information determination part 150 determines that the authentication information of the key at the time of door-unlock operation is identical with the authentication information stored in an authentication information storage part 140, the travel restriction part 160 executes a control to cancel the travel restriction of the vehicle.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a vehicle anti-theft device.

Background Art

[0002] In recent years, a system is known in which an immobilizer permits engine start when it authenticates a legitimate mobile device. In this type of system, if the user leaves the vehicle with the mobile device without locking the door while the engine is running, there is a risk of allowing the vehicle to be stolen by a third party. Therefore, in order to prevent the vehicle from being stolen by a third party, when leaving the vehicle with the mobile device, the user has to turn off the engine switch to stop the engine.

[0003] On the other hand, when leaving the vehicle for only a short time, such as when stopping by a convenience store, if the engine is stopped, when the user returns to the vehicle, the user has to operate the engine switch to restart the engine, which is cumbersome.

[0004] On the contrary, in Patent Document 1, when the SBW (Shift-By-Wire) ECU has not received the ID of the smart key from the immobilizer ECU during engine operation, or when the received ID does not match the reference ID stored therein, it determines that a user who has a legitimate smart key has left the vehicle during engine operation, and discloses a technique for executing anti-theft processing to prevent the vehicle from being stolen.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0006] However, in the technology described in Patent Document 1, it is not assumed that in addition to the above smart key, different types of keys such as digital keys that transmit and receive information via an Internet line have become popular. Also, in a case where there are a plurality of different types of mobile devices such as a smart key and a digital key, for example, when leaving the vehicle with the door locked with a regular digital key while leaving the regular smart key inside the vehicle, since a user having the regular smart key is not determined to have left the vehicle, the anti-theft function does not operate and the shift is released, and there has been a problem that vehicle theft cannot necessarily be prevented.

[0007] Therefore, the present invention has been made in view of the above problems, and even when the user temporarily leaves the vehicle while carrying the other mobile device while leaving one of the smart key and the digital key inside the vehicle with the engine in an operating state, an object of the present invention is to provide a vehicle anti-theft device that prevents vehicle theft.

Means for Solving the Problems

[0008] Embodiment 1; One or more embodiments of the present invention include an authentication information acquisition unit that acquires the first authentication information or the second authentication information from a first key having an ECU in which the first authentication information is written or a second key that acquires the second authentication information via an Internet line, an authentication information storage unit that stores the authentication information of the key operated at the time of door locking, an authentication information determination unit that determines whether the authentication information of the key operated at the time of door unlocking is the same as the authentication information stored in the authentication information storage unit, and a travel restriction unit that restricts the travel of the vehicle. When the door locking operation is performed by the first key or the second key, the travel restriction unit executes control to restrict the travel of the vehicle, and when the authentication information determination unit determines that the authentication information of the key operated at the time of door unlocking is the same as the authentication information stored in the authentication information storage unit, the travel restriction unit cancels the control to restrict the travel of the vehicle. A vehicle theft prevention device is proposed.

[0009] Embodiment 2; One or more embodiments of the present invention propose a vehicle theft prevention device characterized in that the travel restriction unit restricts the movement of the shift lever to the drive range when the door locking operation is performed by the first key or the second key.

[0010] Embodiment 3; One or more embodiments of the present invention include a display unit that displays a screen prompting information input, an information input unit that receives the information input by the user, and an input information determination unit that determines whether the received input information matches information stored in advance. When the authentication information determination unit determines that the authentication information of the key operated at the time of door unlocking is not the same as the authentication information stored in the authentication information storage unit, and the input information determination unit determines that the received input information matches the information stored in advance, the travel restriction unit cancels the control to restrict the travel of the vehicle. A vehicle theft prevention device is proposed.

[0011] Embodiment 4; One or more embodiments of the present invention include an operation control unit that controls the operation of the engine and a message transmission unit that transmits an alarm message to a pre-registered mobile terminal. When the input information determination unit determines that none of the input information received a predetermined number of times matches the pre-stored information, the operation control unit stops the engine, and the message transmission unit transmits the alarm message to the pre-registered mobile terminal. A vehicle theft prevention device is proposed.

Effects of the Invention

[0012] According to one or more embodiments of the present invention, even if the user leaves the vehicle temporarily while carrying one of the mobile devices of the smart key and the digital key while keeping the engine in the operating state and leaving the other mobile device inside the vehicle, there is an effect that vehicle theft can be prevented.

Brief Description of the Drawings

[0013]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Modes for Carrying Out the Invention

[0014] Hereinafter, embodiments of the present invention will be described with reference to FIGS. 1 to 5.

[0015] <First Embodiment> The vehicle theft prevention device 100 according to the present embodiment will be described with reference to FIG. 1.

[0016] <Configuration of Vehicle Theft Prevention Device 100> As shown in FIG. 1, the vehicle theft prevention device 100 according to the present embodiment includes a first key 110, a second key 120, an authentication information acquisition unit 130, an authentication information storage unit 140, an authentication information determination unit 150, a travel restriction unit 160, a display unit 170, an information input unit 180, an input information determination unit 190, an operation control unit 200, and a message transmission unit 210. Regarding the control of the entire vehicle theft prevention device 100, a control unit (for example, an ECU) (not shown) executes it according to a control program.

[0017] The first key 110 is a portable device having an ECU in which authentication information is written in advance. Specifically, the first key 110 can be exemplified by, for example, a smart key having an ECU as a portable device.

[0018] The second key 120 is a portable device that acquires authentication information via the Internet line. Specifically, the second key 120 is, for example, a digital key, and a portable device such as a smartphone can be exemplified.

[0019] The authentication information acquisition unit 130 acquires the first authentication information written in advance in the first key 110 or the second authentication information acquired from the second key 120 via the Internet line. Specifically, for example, an authentication ID as the first authentication information is acquired from the smart key or an authentication ID as the second authentication information is acquired from the digital key.

[0020] The authentication information storage unit 140 stores the authentication information of the first key 110 and the second key 120. In addition, the authentication information storage unit 140 stores the authentication information of the first key or the second key in a distinguishable manner when the door lock is operated.

[0021] The authentication information determination unit 150 determines whether the authentication information of the key operated when the vehicle door is unlocked is the same as the authentication information of the key operated when the vehicle door is locked and stored in the authentication information storage unit 140.

[0022] The driving restriction unit 160 restricts the driving of the vehicle. Specifically, for example, when the door lock operation is performed with the first key or the second key, the driving restriction unit 160 executes control to restrict the driving of the vehicle. More specifically, for example, when the door lock operation is performed with the first key or the second key, the driving restriction unit 160 executes control to restrict the movement of the shift lever to the driving range. Also, when the shift lever of the vehicle is of the button type, control to restrict the pressing of the driving mode button is executed, and when the shift lever is of the dial (rotary) type, control to restrict the operation of turning the dial to the driving mode is executed. On the other hand, when the authentication information determination unit 150 determines that the authentication information of the key for which the door unlock operation was performed is the same as the authentication information stored in the authentication information storage unit 140, the driving restriction unit 160 executes control to cancel the control that restricts the driving of the vehicle (specifically, control to restrict the movement of the shift lever to the driving range). In addition, when the authentication information determination unit 150 determines that the authentication information of the key for which the door unlock operation was performed is not the same as the authentication information stored in the authentication information storage unit 140, and when the input information determination unit 190 described later determines that the received input information matches the pre-stored information, the driving restriction unit 160 cancels the control that restricts the driving of the vehicle.

[0023] The display unit 170 displays a screen prompting the user to input information. Specifically, the display unit 170 is configured by, for example, an LCD (Liquid Crystal Display device), etc. When the authentication information determination unit 150 determines that the authentication information of the key operated when the vehicle door is unlocked is not the same as the authentication information stored in the authentication information storage unit 140 when the door is locked, a screen prompting the user to input information is displayed. In this embodiment, the display unit 170 can be exemplified by the display unit of, for example, a navigation device provided inside the vehicle.

[0024] The information input unit 180 receives the user's information input. Specifically, for example, a password as input information is input to the information input unit 180 by the user's input through voice or touch panel operation.

[0025] The input information determination unit 190 determines whether the input information received from the user matches the information stored in the memory 220 in advance. When the input information determination unit 190 determines that the received input information matches the information stored in the memory 220 in advance, it outputs information to that effect to the travel restriction unit 160. On the other hand, for example, when the input information determination unit 190 determines that none of the input information received a predetermined number of times matches the information stored in the memory 220 in advance, it outputs information to that effect to the operation control unit 200. The predetermined number of times may be arbitrarily determined based on security requirements.

[0026] The operation control unit 200 controls the operation of the engine. Specifically, when the input information determination unit 190 determines that none of the input information received a predetermined number of times in the information input unit 180 matches the information stored in the memory 220 in advance, the operation control unit 200 executes control to stop the vehicle engine.

[0027] The message transmission unit 210 transmits, for example, an alarm message to a pre-registered mobile device. Specifically, when the input information determination unit 190 determines that none of the input information received a predetermined number of times in the information input unit 180 matches the information stored in the memory 220 in advance, for example, a warning message is notified to inform the mobile device that there is a risk of vehicle theft.

[0028] <Processing of Vehicle Theft Prevention Device 100> The processing of the vehicle theft prevention device 100 according to the present embodiment will be described with reference to FIGS. 2 to 5.

[0029] For example, when the user leaves the vehicle for a short time, such as stopping by at a convenience store, the user stops the vehicle with the engine running (step S101).

[0030] At this time, for theft prevention, the user performs a door lock operation with, for example, a smart key as the first key 110 or a digital key as the second key 120 (step S102).

[0031] The control unit (ECU) determines whether the engine is in an operating state (step S103). If the engine is in an operating state, for example, it determines whether there is an occupant in the driver's seat by means of an imaging device or the like installed in the vehicle (step S104). If the control unit (ECU) determines that the engine is not in an operating state (\"NO\" in step S103), this process is terminated.

[0032] When the control unit (ECU) determines that the engine is in an operating state and there is no occupant in the driver's seat (\"YES\" in step S104), the authentication information acquisition unit 130 acquires the authentication information of the smart key as the first key 110 or the digital key as the second key 120 for which the door lock operation has been performed (step S105).

[0033] The travel restriction unit 160 executes control to restrict the travel of the vehicle, and shifts to, for example, a full shift lock mode so that the shift lever cannot be moved to the travel range (step S106).

[0034] On the other hand, when the control unit (ECU) determines that the engine is in an operating state and there is an occupant in the driver's seat ( "NO" in step S104), this process is terminated.

[0035] Thereafter, when the user returns to the temporarily left vehicle and performs a door unlocking operation of the vehicle using the smart key as the first key 110 or the digital key as the second key 120 (step S107), the authentication information determination unit 150 collates the authentication information of the key stored in the authentication information storage unit 140 in an identifiable manner with the authentication information of the key for which the door unlocking operation of the vehicle has been performed, and determines whether the authentication information is the same (step S108).

[0036] When it is determined in the authentication information determination unit 150 that the authentication information of the key for which the door locking operation of the vehicle has been performed is the same as the authentication information of the key for which the door unlocking operation of the vehicle has been performed ( "YES" in step S108), the travel restriction unit 160 releases the full shift lock mode (step S109), and this process is terminated.

[0037] On the other hand, when it is determined in the authentication information determination unit 150 that the authentication information of the key for which the door locking operation of the vehicle has been performed is not the same as the authentication information of the key for which the door unlocking operation of the vehicle has been performed ( "NO" in step S108), the control unit (ECU) causes the process to transition to step S201 in FIG. 5.

[0038] The control unit (ECU) causes, for example, a personal confirmation screen for requesting the input of a password for the user to confirm that the user is the vehicle owner to be displayed on the display of the car navigation device in the vehicle as the display unit 170 (step S201).

[0039] The user inputs a password as input information, for example, via the touch panel of the car navigation device as the information input unit 180 (step S202).

[0040] The input information determination unit 190 determines whether the password entered by the user matches the pre-stored password information (step S203).

[0041] As a result of the determination, when the input information determination unit 190 determines that the password information received by the information input unit 180 matches the pre-stored password information (''YES'' in step S203), the driving restriction unit 160 releases the full shift lock mode (step S204), and the control unit (ECU) ends this process.

[0042] On the other hand, when the input information determination unit 190 determines that the password information received by the information input unit 180 does not match the pre-stored password information (''NO'' in step S203), the input information determination unit 190 determines whether any of the password information received a predetermined number of times by the information input unit 180 matches the pre-stored password information (step S205). And when the input information determination unit 190 determines that the number of input times of the received password information in the information input unit 180 is less than the predetermined number of times (''NO'' in step S205), the process is transitioned to step S202.

[0043] On the other hand, when the input information determination unit 190 determines that the number of input times of the received password information in the information input unit 180 has reached the predetermined number of times (''YES'' in step S205), the input information determination unit 190 notifies the operation control unit 200 to that effect, and the operation control unit 200 stops the vehicle engine (step S206).

[0044] When the vehicle engine is stopped by the operation control unit 200, the message transmission unit 210 notifies an abnormality, for example, by sending a warning message indicating a risk of vehicle theft to a smartphone registered in advance as a mobile terminal (step S207). In this case, when the user uses the first key or the second key stored in the authentication information storage unit 140, or enters the password again and the input information matches the information stored in the input information determination unit 190, the engine that has been stopped normally can be restarted.

[0045] <Function and Effect> As described above, in the vehicle theft prevention device 100 according to the present embodiment, when the door lock is operated by the first key or the second key, the travel restriction unit 160 executes control to restrict the travel of the vehicle and restricts the movement of the shift lever to the travel range. That is, for example, even if the user leaves the normal smart key inside the vehicle with the engine running, locks the vehicle door using the normal digital key, and leaves the vehicle, the vehicle theft prevention function is activated. Therefore, vehicle theft by a third party can be effectively prevented. Also, in the vehicle theft prevention device 100 according to the present embodiment, when the authentication information determination unit 150 determines that the authentication information of the key for which the door unlock operation has been performed is the same as the authentication information stored in the authentication information storage unit 140, the travel restriction unit 160 executes control to cancel the control for restricting the travel of the vehicle. That is, even if the user leaves the normal smart key inside the vehicle with the engine running, locks the vehicle door using the normal digital key, and leaves the vehicle, if the user unlocks the vehicle door using the normal digital key, the control for restricting travel is cancelled. Therefore, if the user locks and unlocks the door with the normal digital key, in order to prevent vehicle theft by a third party, the user does not have to perform the cumbersome act of turning off the engine every time they leave the vehicle, thus improving the convenience for the user.

[0046] Also, in the vehicle theft prevention device 100 according to the present embodiment, when the authentication information determination unit 150 determines that the authentication information of the key operated when the vehicle door is unlocked is not the same as the authentication information when the door lock is operated, a screen prompting the user to input a password is displayed. When the input information determination unit 190 determines that the received password matches the pre-stored password, it outputs information to that effect to the travel restriction unit 160, and the travel restriction unit 160 executes control to release the control for restricting the travel of the vehicle. That is, for example, when the vehicle door is locked with a regular smart key and the vehicle door is unlocked with a regular digital key, a screen prompting the user to input a password is displayed. When the input information determination unit 190 determines that the received password matches the pre-stored password, it outputs information to that effect to the travel restriction unit 160, and the travel restriction unit 160 releases the control for restricting the travel of the vehicle. Therefore, even when the key used for locking the vehicle door is different from the key used for unlocking it, for example, if the user is the owner of the vehicle, by inputting a password or the like set in advance by himself / herself, the control for restricting travel is released, so that vehicle theft can be effectively suppressed without giving the user more than necessary disadvantages. Also, in the vehicle theft prevention device 100 according to the present embodiment, when the input information determination unit 190 determines that none of the passwords received a predetermined number of times match the pre-stored password, the operation control unit 200 stops the engine. Therefore, for a third party who does not know the password, by stopping the engine, a further deterrent effect can be exerted against vehicle theft. Furthermore, in the vehicle theft prevention device 100 according to the present embodiment, when the input information determination unit 190 determines that none of the passwords received a predetermined number of times match the pre-stored password, the message transmission unit 210 transmits an alarm message to a pre-registered mobile terminal. Therefore, the user can be effectively made aware that an abnormal state has occurred in the vehicle.

[0047] <Modification Example> As a modification example different from the above-described embodiment, when operating the vehicle door lock, instead of the authentication ID of the digital key, for example, the determination of the authentication information may be performed using specific information unique to a mobile terminal such as a smartphone as the digital key. Further, when the smartphone as the digital key has a function of acquiring biometric information, the determination of the authentication information may be performed based on the biometric information of the user. In such a case, without preparing the authentication information in advance on the vehicle anti-theft device side, the user can be uniquely identified based on specific information unique to a mobile terminal such as a smartphone or the biometric information of the user.

[0048] As described above, the embodiments of the present invention have been described in detail with reference to the drawings. However, the specific configuration is not limited to this embodiment, and designs and the like within the scope not departing from the gist of the present invention are also included.

Description of Reference Numerals

[0049] 100 Vehicle anti-theft device 110 Smart key 120 Digital key 130 Authentication information acquisition unit 140 Authentication information storage unit 150 Authentication information determination unit 160 Travel restriction unit 170 Display unit 180 Information input unit 190 Input information determination unit 200 Operation control unit 210 Message transmission unit

Claims

1. An authentication information acquisition unit that acquires the first authentication information or the second authentication information from a first key having an ECU in which the first authentication information is written or a second key that acquires the second authentication information via an Internet line; An authentication information storage unit that stores the authentication information of the key operated at the time of door locking; An authentication information determination unit that determines whether the authentication information of the key operated at the time of door unlocking is the same as the authentication information stored in the authentication information storage unit; A travel restriction unit that restricts the travel of the vehicle; Comprising: When the door lock operation is performed by the first key or the second key, the travel restriction unit executes control to restrict the travel of the vehicle; When the authentication information determination unit determines that the authentication information of the key operated at the time of door unlocking is the same as the authentication information stored in the authentication information storage unit, the travel restriction unit releases the control to restrict the travel of the vehicle. A vehicle anti-theft device characterized by this.

2. The vehicle anti-theft device according to claim 1, wherein the travel restriction unit restricts the movement of the shift lever to the travel range when the door lock operation is performed by the first key or the second key.

3. A display unit that displays a screen prompting information input; An information input unit that receives the information input by the user; An input information determination unit that determines whether the received input information matches information stored in advance; Comprising: When the authentication information determination unit determines that the authentication information of the key operated at the time of door unlocking is not the same as the authentication information stored in the authentication information storage unit, and the input information determination unit determines that the received input information matches the information stored in advance, the travel restriction unit releases the control to restrict the travel of the vehicle. The vehicle anti-theft device according to claim 2, characterized by this.

4. An operation control unit that controls the operation of the engine; A message transmission unit that transmits an alarm message to a portable terminal registered in advance; Comprising: When the input information determination unit determines that none of the input information received a predetermined number of times matches the information stored in advance, the operation control unit stops the engine, and the message transmission unit transmits the warning message to the pre-registered mobile terminal. The vehicle theft prevention device according to claim 3, characterized in that.

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