JP2004143699A - Vehicle antitheft system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve a problem that a duplicate key is created to unlock in some cases when identification code information inside a key and a lock is stolen in a vehicle antitheft system provided with an electronic locking device. <P>SOLUTION: When a vehicle key 7 is inserted in an electronic cylinder lock 2 of a vehicle, the ID of the vehicle key 7 is read by a vehicle key ID acquisition part 5, and a vehicle ID is read from an ID storage part 9 by a vehicle ID acquisition part 8 of an in-vehicle device 1. A device control part 14 transmits the acquired vehicle key ID and the vehicle ID by a sender's number notifying function to a center device 21 through a cellphone 17 connected to an external equipment interface 13. The center device 21 collates the received vehicle key ID and the vehicle ID with the cellphone number in an ID collating part 23, and when in agreement, sends a response of authentication acceptance to the in-vehicle device 1 through the cellphone 17. The in-vehicle device 1 unlocks the electronic cylinder 2 when the authentication response is acceptable. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a vehicle theft prevention system using a vehicle key authentication method, and an apparatus and a method related thereto.
[0002]
[Prior art]
In a vehicle theft prevention system using a conventional vehicle key authentication method, authentication is performed by using a physical shape such as an unevenness of a key between a vehicle key possessed by a user and a key cylinder on a vehicle side, and recently, a vehicle side There is also known an electronic locking device that performs authentication by exchanging electronic information between a vehicle key and a vehicle via a key cylinder (for example, see Patent Document 1).
[0003]
FIG. 4 shows a program-type electronic locking device described in Patent Document 1. The lock 102 attached to the door 101 includes a rotary cylinder 103 and a lock piece 104 for locking and unlocking between the door 101 and the lock 102. The rotary cylinder 103 has an opening 105, and an electronic circuit is built therein. The key 106 includes a blade 106a that can be inserted into the opening 105 of the rotary cylinder 103 and a head 106b that can be gripped. An electrical contact 107 is provided at the tip of the blade 106a, and the head 106b has a display on its surface. A unit 108 and a keypad 109 are provided, and an electronic circuit including a battery is provided therein. When the blade 106a of the key 106 is inserted into the opening 105 of the rotary cylinder 103, the electrical contact 107 at the tip of the blade 106a contacts the electrical contact inside the rotary cylinder 103, and the electronic circuit inside the key 106 and the rotary cylinder 103 The internal electronic circuit conducts, the identification code # is transferred from the electronic circuit inside the key 106 to the electronic circuit inside the rotary cylinder 103, the identification code is collated in the rotary cylinder 103, and when the identification code matches, the rotary cylinder 103 Release the locking means. Thus, the key 106 inserted into the rotary cylinder 103 can be rotated, and when the user turns the key 106, the locking piece 104 of the lock 102 is pulled inward and unlocked.
[0004]
Patent Document 1
Japanese Patent Application Publication No. Hei 10-512638
[Problems to be solved by the invention]
However, in the vehicle anti-theft system including the electronic locking device as described above, if the identification code information inside the key or inside the lock is stolen, a duplicate key is created and unlocked, and there is a problem in security. .
[0006]
SUMMARY OF THE INVENTION An object of the present invention is to solve such a conventional problem, and an object of the present invention is to provide a vehicle anti-theft system in which even if identification code information is stolen, it cannot be unlocked.
[0007]
[Means for Solving the Problems]
In order to achieve the above object, a vehicle theft prevention system according to the present invention includes an on-board device, an electronic lock mounted on a door of a vehicle, and a unit for acquiring a vehicle key ID from a vehicle key inserted into the electronic lock. A means for acquiring a vehicle ID determined for the vehicle, a communication means for adding a communication ID to the acquired vehicle key ID and the vehicle ID, and wirelessly transmitting an authentication request to a center device; A receiving unit that receives the authentication request from the device, and a matching unit that matches the vehicle key ID, the vehicle ID, and the communication ID received from the in-vehicle device with the previously held vehicle key ID, the vehicle ID, and the communication ID, Transmitting means for transmitting the result of the collation as an authentication response to the in-vehicle device, wherein the vehicle device determines the content of the authentication response received via the communication means. And the step, characterized in that the content of the authentication response comprising means for unlocking the electronic lock if passed. With this configuration, even if identification code information such as a vehicle key ID or a vehicle ID is stolen, the existence of the communication ID is not known to the outside, so that the identification is not stolen. Otherwise, the vehicle cannot be unlocked, so that a more secure vehicle theft prevention system can be realized.
[0008]
Further, in the vehicle theft prevention system according to the present invention, the communication means is a mobile phone connected to the in-vehicle device, and the communication ID is a telephone number of the mobile phone. With this configuration, it is not known to the outside that the communication ID is the telephone number of the mobile phone, so that a more secure vehicle theft prevention system can be realized.
[0009]
In the vehicle theft prevention system according to the present invention, the communication ID is transmitted to the center device by a caller ID notification function of the mobile phone. With this configuration, transmission of the communication ID can be easily performed.
[0010]
Further, in the vehicle theft prevention system of the present invention, when a vehicle theft report is submitted from the user to the center device, the center device rejects the authentication request for the vehicle targeted for the vehicle theft report. Is determined. With this configuration, even if both the vehicle key and the vehicle are stolen, the center device returns a response of authentication failure by reporting the theft, so that even the legitimate vehicle key is unlocked. Therefore, a more secure vehicle theft prevention system can be realized.
[0011]
Further, the vehicle theft prevention system of the present invention is characterized in that an electronic signature is used in wireless communication between the in-vehicle device and the center device. With this configuration, whether the authentication request sent from the in-vehicle device to the center device is sent from the proper in-vehicle device, and the authentication response sent from the center device to the in-vehicle device is sent from the proper center device. It can be determined whether or not the vehicle has been sent, and a more secure vehicle anti-theft system can be realized.
[0012]
Further, the vehicle-mounted device in the vehicle anti-theft system of the present invention includes an electronic lock mounted on a door of the vehicle, a unit for acquiring a vehicle key ID from a vehicle key inserted into the electronic lock, and a device defined for the vehicle. Means for obtaining a vehicle ID, communication means for adding a communication ID to the obtained vehicle key ID and vehicle ID and wirelessly transmitting an authentication request to the center device, and an authentication response received from the center device via the communication means And a means for unlocking the electronic lock if the contents of the authentication response pass. With this configuration, it is possible to realize an in-vehicle device in a more secure vehicle theft prevention system.
[0013]
Also, in the in-vehicle device of the present invention, the communication means may be a mobile phone connected to the in-vehicle device, and the communication ID may be transmitted to the center device by a caller ID notification function of the mobile phone. Features. With this configuration, transmission of the communication ID can be easily performed.
[0014]
Further, in the vehicle-mounted device of the present invention, the vehicle-mounted device is connected to a navigation device or an emergency notification device mounted on the vehicle via a vehicle network, and a mobile phone is connected to the navigation device or the emergency notification device. It is characterized by having. With this configuration, it is possible to use the functions of the navigation device or the emergency notification device and the communication function of the mobile phone connected thereto.
[0015]
Further, the center device of the present invention includes a receiving unit that receives an authentication request including a vehicle key ID, a vehicle ID, and a communication ID from an in-vehicle device, and holds the vehicle key ID, the vehicle ID, and the communication ID received from the in-vehicle device in advance. A vehicle key ID, a vehicle ID, and a communication ID, and a transmitting unit that transmits a result of the verification as an authentication response to the in-vehicle device. With this configuration, it is possible to realize a center device in a more secure vehicle theft prevention system.
[0016]
Further, the center device of the present invention is characterized in that the communication ID is transmitted by a caller ID notification function of the mobile phone. With this configuration, it is possible to easily obtain the communication ID.
[0017]
Further, the center device of the present invention is characterized in that the vehicle key ID, the vehicle ID and the communication ID are centrally managed in a database. With this configuration, it is possible to easily manage the vehicle key ID, the vehicle ID, and the communication ID.
[0018]
Further, the present invention provides an on-vehicle device, wherein a vehicle key is inserted into an electronic lock mounted on a door of a vehicle to obtain a vehicle key ID, and a step of obtaining a vehicle ID defined for the vehicle, Adding the communication ID to the acquired vehicle key ID and vehicle ID and wirelessly transmitting an authentication request to the center device; and storing the vehicle key ID, the vehicle ID, and the communication ID received from the in-vehicle device in the center device in advance. Collating the vehicle key ID, the vehicle ID, and the communication ID, transmitting the collation result to the in-vehicle device as an authentication response, and determining the content of the received authentication response in the in-vehicle device. And a step of unlocking the electronic lock if the contents of the authentication response pass. . With this configuration, even if identification code information such as a vehicle key ID or a vehicle ID is stolen, the existence of the communication ID is not known to the outside, so that the identification is not stolen. Otherwise, the vehicle cannot be unlocked, so that a more secure vehicle theft prevention system can be realized.
[0019]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 shows a configuration of a vehicle-mounted device and a center device of a vehicle theft prevention system according to an embodiment of the present invention. In FIG. 1, an in-vehicle device 1 includes an electronic cylinder lock 2 mounted on a door of a vehicle. The rotation cylinder 3 of the electronic cylinder lock 2 includes a locking and unlocking mechanism 4 having a lock mechanism for fixing or releasing the rotation of the vehicle key 7 inserted into the rotation cylinder 3, and a vehicle key inserted into the rotation cylinder 3. 7, a vehicle key ID acquisition unit 5 which is an electronic circuit for reading a vehicle key ID, for example, a key number, and transferring the data, controls a lock mechanism of the locking / unlocking mechanism unit 4 and an electronic circuit of the vehicle key ID acquisition unit 5. And a key control unit 6 comprising a microcomputer. The vehicle key 7 includes a blade portion inserted into the rotary cylinder 3, electrical conduction means for electrically connecting to an electronic circuit inside the rotary cylinder 3, a head portion including an electronic circuit storing a vehicle key ID and a battery. Consists of In the vehicle-mounted device 1, the vehicle ID acquisition unit 8 reads a vehicle ID stored in the ID storage unit 9, for example, a vehicle number. The ID storage unit 9 also stores the vehicle key ID. The communication unit 10 transmits the obtained vehicle key ID and an authentication request obtained by adding the communication ID to the vehicle ID to the center device 21 via the antenna, and receives an authentication response from the center device 21 as a response. The authentication pass / fail determination unit 11 determines the content of the authentication response received from the center device 21 via the communication unit 10. The authentication data storage unit 12 stores digital signature data, reception history from the center device 21, and the like. The external device interface 13 is connected to an in-vehicle LAN 15 in a vehicle in which the in-vehicle device 1 is mounted. The device control unit 14 is a microcomputer to which each unit of the vehicle-mounted device 1 is connected to control the entire device.
[0020]
An external device 16 such as a navigation device or an emergency notification device is connected to the in-vehicle LAN 15. The navigation device detects a current position of a vehicle using a positioning system such as a GPS (Global Positioning System), and displays the detected current position on a map drawn on a monitor based on map data. There is also a function to search for and display a recommended route to the destination. The emergency notification device automatically notifies an emergency notification center of an accident by a sensor signal from a collision sensor or by pressing a push button switch when a vehicle has an accident such as a collision. A mobile telephone 17 can be connected to these external devices 16 via a modem for communication. The external device interface 13 may be provided with a modem so that the mobile phone 17 can be directly connected to the vehicle-mounted device 1.
[0021]
The center device 21 receives the authentication request from the in-vehicle device 1, and transmits and receives the authentication response to the in-vehicle device 1, and holds the vehicle key ID, the vehicle ID, and the communication ID received from the in-vehicle device 1 in advance. The vehicle ID, the vehicle ID, the vehicle ID, and the communication ID, and the vehicle ID, the vehicle key ID, the mobile phone number, the key state, and the vehicle position, as shown in FIG. And a control unit 25 which is a microcomputer for controlling the entire apparatus.
[0022]
Next, the authentication operation of the vehicle key 7 in the present embodiment will be described with reference to FIG. Here, a case will be described in which the mobile phone 17 connected to the external device 16 is used for communication with the center device 21. The electronic cylinder lock 2 is normally in a locked state. When a person having the vehicle key 7 inserts the vehicle key 7 into the rotary cylinder 3 of the electronic cylinder lock 2, the vehicle key ID acquisition unit 5 of the electronic cylinder lock 2 reads the vehicle key ID from the vehicle key 7, The data is transferred to the device control unit 14 through the control unit 6 (step S1). The device control unit 14 checks the acquired vehicle key ID with a vehicle key ID registered in the ID storage unit 9 in advance (Step S2). As a result of the collation, if the collation fails, the subsequent processing is not performed, the electronic lock 2 is not unlocked, and if the collation passes, the process proceeds to the next processing (step S3). Next, the vehicle ID acquisition unit 8 extracts a vehicle ID registered in the ID storage unit 9 in advance (Step S4). The device control unit 14 sends the vehicle key ID and the vehicle ID to the communication unit 19, and the communication unit 10 creates an authentication message (Step S5). The authentication message includes a communication header for communicating with the center device 21, a vehicle key ID, a vehicle ID, and a communication footer. Next, in order to transmit the authentication request message to the center device 21 using the mobile phone 17, the device control unit 14 passes the authentication request message to the mobile phone 17 through the external device interface 13 and the external device 16, and transmits the message. Instruct. At this time, the caller ID notification setting of the mobile phone 17 is set to ON in advance. The mobile phone 17 acquires the mobile phone number registered in its own device, adds the mobile phone number, and transmits an authentication request message to the phone number of the center device 21 (step S6).
[0023]
In the center device 21, when the transmission / reception unit 22 receives the authentication request message from the mobile phone 17 (step S7), the control unit 25 determines the vehicle ID and the vehicle ID from the mobile phone number and the authentication request message notified by the caller ID notification. The vehicle key ID is extracted and passed to the ID collation unit 23. The ID matching unit 23 searches the vehicle key authentication management database 24 using the vehicle ID as a keyword, and searches for a combination of the received vehicle ID, vehicle key ID, and mobile phone number. If the combination exists, it is determined that the authentication has passed, and if it does not exist, it is determined that the authentication has failed (step S8). Further, the key state is stored in a corresponding record of the database 24 shown in FIG. The key state is locked or unlocked. The control unit 25 creates an authentication response message based on the collation result, and transmits the message to the mobile phone 17 through the transmission / reception unit 22 (step S9). The device control unit 14 of the in-vehicle device 1 passes the authentication response message received through the mobile phone 17 and the external device 16 to the authentication pass / fail determination unit 11, and the authentication pass / fail determination unit 11 determines whether the authentication result is acceptable (step S10). As a result, if the authentication result is unsuccessful, the subsequent processing is not performed and unlocking is not performed (step S11). If the authentication result is successful, the device control unit 14 passes the pass data to the key control unit 6 of the electronic cylinder lock 2, and the key control unit 6 sends a release signal to the actuator of the lock / unlock mechanism unit 4 of the rotary cylinder 3. To unlock (step S12). As a result, the rotary cylinder 3 becomes rotatable. When the user rotates the vehicle key 7, the rotary cylinder 3 is rotated to unlock the electronic cylinder lock 2, and the vehicle door can be opened and closed.
[0024]
As described above, according to the present embodiment, even if the vehicle key ID and the vehicle ID held in ID storage unit 9 are stolen and a duplicate key is created, the mobile phone number is further required for vehicle key authentication. Since it is not known from the outside that data is required, unlocking by an unauthorized user can be prevented, and authentication can be enhanced. In addition, by performing this comparison in the center device 21, authentication cannot be established only with the information existing in the vehicle, so that the authenticity can be enhanced. In this case, if the center device 21 determines that the vehicle is stolen based on the report of the theft from the owner, the verification can be rejected, and the unlocking is prevented even when the vehicle key and the vehicle and the mobile phone are stolen together. be able to. Further, when a navigation device is connected to the vehicle-mounted device 1, the center device 21 can manage the position of the vehicle when the vehicle key authentication is performed. Further, by connecting the in-vehicle device 1 to an external device 16 such as a navigation device or an emergency notification device connected to the mobile phone 17 via the vehicle LAN 15, the mobile phone 17 can be shared by the in-vehicle device 1 and the external device 15. . In addition, since the center device 21 owns and centrally manages the vehicle key authentication database 24, authentication determination cannot be performed by any device other than the center device 21, thereby enhancing the authenticity and facilitating data maintenance. . Further, when performing communication between the center device 21 and the in-vehicle device 1 or the mobile phone 17, the electronic signature registered in the authentication data storage unit 12 is used, so that the authentication request sent from the appropriate in-vehicle device side can be performed. Since it is possible to determine whether or not the result is the collation at the center device side, further security can be ensured. Further, by storing the authentication response data from the center device 21 in the authentication data storage unit 12, even if the security is broken, it is possible to perform a tracking investigation. Further, by adding the current position information of the vehicle acquired by the navigation device connected to the external device interface 13 to the authentication request message, the center device 21 stores the current position information of the vehicle in the database 24 if the authentication is successful. Can be stored and managed.
[0025]
In the above embodiment, when the communication unit 10 of the in-vehicle device 1 is used for communication with the center device 21, for example, a device number preset in the in-vehicle device 1 is used as a communication ID. By storing this in a location different from the ID storage unit 9 and extracting and attaching it when creating the authentication request message, security can be ensured even if the ID information in the ID storage unit 9 is stolen. .
[0026]
【The invention's effect】
As described above, according to the present invention, in a vehicle-mounted device, a vehicle key is inserted into an electronic lock mounted on a vehicle door, and a vehicle key ID and a vehicle ID defined for the vehicle are acquired. The authentication request is wirelessly transmitted to the center device by adding the communication ID to the vehicle key ID and the vehicle ID, and the vehicle key ID, the vehicle ID and the communication ID received from the in-vehicle device and the vehicle key ID previously stored in the center device, The vehicle ID and the communication ID are collated, and the result of the collation is transmitted to the in-vehicle device as an authentication response. In the in-vehicle device, the content of the received authentication response is determined. Is unlocked, so that even if identification code information such as a vehicle key ID or a vehicle ID is stolen, the existence of the communication ID is not known to the outside, so it is not stolen. Since the authentication result of can not be unlocked if not pass, it is possible to realize a higher-security vehicle antitheft system.
[Brief description of the drawings]
FIG. 1 is a block diagram illustrating a configuration of a vehicle theft prevention system according to an embodiment of the present invention. FIG. 2 is a schematic diagram illustrating a configuration of a vehicle key authentication database of a center device according to an embodiment of the present invention. FIG. 4 is a flowchart showing a vehicle key authentication operation in the embodiment of the invention. FIG. 4 is a perspective view showing a configuration of an electronic locking device in a conventional example.
DESCRIPTION OF SYMBOLS 1 Onboard apparatus 2 Electronic cylinder lock 3 Rotating cylinder 4 Locking / unlocking mechanism unit 5 Vehicle key ID acquisition unit 6 Key control unit 7 Vehicle key 8 Vehicle ID acquisition unit 9 ID storage unit 10 Communication unit 11 Authentication pass / fail determination unit 12 Authentication data storage Unit 13 external device interface 14 device control unit 15 in-vehicle LAN
16 External Equipment 17 Mobile Phone 21 Center Device 22 Transmitter / Receiver 23 ID Verification Unit 24 Vehicle Key Authentication Database 25 Control Unit

Claims (12)

An in-vehicle device, an electronic lock mounted on a door of a vehicle, a unit for obtaining a vehicle key ID from a vehicle key inserted into the electronic lock, a unit for obtaining a vehicle ID defined for the vehicle, and the obtaining Communication means for wirelessly transmitting an authentication request to a center device by adding a communication ID to the vehicle key ID and the vehicle ID, receiving means for receiving the authentication request from the in-vehicle device, and receiving from the in-vehicle device Verification means for verifying the obtained vehicle key ID, vehicle ID, and communication ID with a previously stored vehicle key ID, vehicle ID, and communication ID; and transmission means for transmitting the result of the verification to the in-vehicle device as an authentication response. Wherein the vehicle device determines whether or not the authentication response received via the communication unit is acceptable, and if the authentication response is acceptable, unlocks the electronic lock. Vehicle anti-theft system, characterized in that a means. 2. The vehicle theft prevention system according to claim 1, wherein the communication unit is a mobile phone connected to the on-vehicle device, and the communication ID is a telephone number of the mobile phone. 3. The vehicle theft prevention system according to claim 2, wherein the communication ID is transmitted to the center device by a caller number notification function of the mobile phone. 2. The method according to claim 1, wherein when the user submits a vehicle theft report to the center device, the center device determines that the authentication request for the vehicle targeted for the vehicle theft report is rejected. 4. The vehicle theft prevention system according to any one of claims 3 to 3. The vehicle theft prevention system according to claim 1, wherein an electronic signature is used in wireless communication between the vehicle-mounted device and the center device. An electronic lock mounted on a door of a vehicle, a means for obtaining a vehicle key ID from a vehicle key inserted into the electronic lock, a means for obtaining a vehicle ID defined for the vehicle, and the obtained vehicle key ID Communication means for wirelessly transmitting an authentication request to a center device by adding a communication ID to a vehicle ID and a vehicle ID; authentication pass / fail determination means for determining the contents of an authentication response received from the center device via the communication means; A vehicle-mounted device in a vehicle anti-theft system, comprising: means for unlocking the electronic lock if the contents of the above pass. 7. The on-vehicle vehicle according to claim 6, wherein the communication unit is a mobile phone connected to the on-vehicle device, and the communication ID is transmitted to the center device by a caller number notification function of the mobile phone. apparatus. 7. The vehicle-mounted device is connected to a navigation device or an emergency notification device mounted on the vehicle via a vehicle network, and a mobile phone is connected to the navigation device or the emergency notification device. Or the vehicle-mounted device according to 7. Receiving means for receiving an authentication request including the vehicle key ID, the vehicle ID, and the communication ID from the in-vehicle device; and the vehicle key ID, the vehicle ID, and the communication ID received from the in-vehicle device and the vehicle key ID, the vehicle ID, and the A center device in a vehicle anti-theft system, comprising: verification means for verifying a communication ID; and transmission means for transmitting a result of the verification to the in-vehicle apparatus as an authentication response. 10. The center device according to claim 9, wherein the communication ID is transmitted by a caller number notification function of the mobile phone. 11. The center device according to claim 9, wherein the vehicle key ID, the vehicle ID, and the communication ID are centrally managed in a database. In the in-vehicle device, a step of inserting a vehicle key into an electronic lock mounted on a door of a vehicle to obtain a vehicle key ID; a step of obtaining a vehicle ID defined for the vehicle; Adding a communication ID to the vehicle ID and wirelessly transmitting an authentication request to the center device; and, in the center device, a vehicle key ID received from the vehicle-mounted device, a vehicle ID and a communication ID, and a vehicle key ID previously stored; Collating the vehicle ID and the communication ID, transmitting the result of the collation as an authentication response to the in-vehicle device, determining in the in-vehicle device the content of the received authentication response, And v. Unlocking the electronic lock if the contents of the vehicle pass.

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