JP6372406B2 - Electronic key registration system - Google Patents

Description

  The technology disclosed in the present specification relates to an electronic key registration system that registers an electronic key capable of communicating with an in-vehicle ECU and controlling the in-vehicle ECU in the in-vehicle ECU.

In Patent Literature 1, when an electronic key that communicates with the in-vehicle ECU and can control the in-vehicle ECU is additionally registered in the in-vehicle ECU, the electronic key that is desired to be additionally registered is based on the registration permission condition stored in the in-vehicle ECU in advance. It is judged whether it is possible to register. This is intended to suppress unauthorized registration. Here, it is disclosed that the registration permission condition is determined based on whether or not the combination of the electronic key ID and the in-vehicle ECU ID matches a predetermined combination condition.

JP2013-234520A

In order to prevent unauthorized registration, it is desirable to set different registration permission conditions for each in-vehicle ECU so that the number of electronic keys permitted for registration is reduced for each in-vehicle ECU. However, when the registration permission condition is set so that the number of electronic keys that are permitted to be registered for each in-vehicle ECU is reduced, there are a plurality of in-vehicle ECUs in which different registration permission conditions are set. Become very much. Therefore, in the electronic key registration system, it is difficult to achieve both the prevention of unauthorized registration and the reduction in the number of ECU parts.

The technology disclosed in the present specification is a first identifier that is an identifier unique to a first electronic key that is communicable with an in-vehicle ECU, and an identifier that is unique to a second electronic key. What is the first identifier? In the electronic key registration system for registering different second identifiers in the in-vehicle ECU, the in-vehicle ECU can communicate at least the identifier of the first electronic key and the first electronic key from the first electronic key. Receiving means for receiving identification information capable of recognizing brand information or destination information of a vehicle on which the in-vehicle ECU is mounted, and registering the second identifier in the in-vehicle ECU using the information received by the receiving means A registration condition setting means for setting a registration condition for performing the registration, and the in-vehicle ECU uses the registration condition to determine whether the second identifier can be registered in the in-vehicle ECU. Means and an electronic key registration system characterized by having a registration means for registering as an identifier of the first identifier and capable of communicating electronic key the second identifier.

  According to the electronic key registration system described in the present specification, the electronic key is additionally registered in the in-vehicle ECU based on the identification information that can recognize the attribute information regarding the attribute of the first electronic key received by the in-vehicle ECU at the time of initial registration. Therefore, it is not necessary to provide a plurality of ECUs having different product numbers in advance. Furthermore, since additional registration conditions that were not set at the time of initial registration are provided at the time of additional registration, unauthorized registration can be prevented.

According to the electronic key registration system of the present invention, it is possible to provide a technique related to an electronic key registration system capable of both preventing unauthorized registration and reducing the number of ECU parts.

1 is a schematic diagram of an electronic key registration system according to an embodiment. The flowchart of the electronic key registration system at the time of the first registration which concerns on embodiment. The flowchart of the electronic key registration system at the time of the additional registration which concerns on embodiment. The figure which shows the classification table of electronic key ID in the registration condition setting means which concerns on a modification.

An electronic key registration system according to an embodiment of the present invention will be described with reference to FIG. The electronic key registration system 100 according to the embodiment includes a master key 10, a sub key 20, an in-vehicle ECU 30, and a registration tool 70.

The master key 10 has different specifications for each target vehicle manufacturer and destination, and can lock or unlock the vehicle door by wirelessly communicating with the in-vehicle ECU 30 of the corresponding vehicle. The master key 10 includes a memory 12, a reception unit 13, and a transmission unit 14. The memory 12 stores a master key ID 11 that is an identifier unique to the master key 10 when the master key 10 is manufactured. After the in-vehicle ECU 30 determines that the master key 10 is a key that can be registered in the in-vehicle ECU 30, an ECU ID 31 of the in-vehicle ECU 30 described later is stored in the memory 12. The receiving unit 13 receives the ECU ID 31 from the in-vehicle ECU 30, and the transmitting unit 14 transmits the master key ID 11, brand information of the master key 10, destination information, an operation request, and the like to the in-vehicle ECU 30.

The sub key 20 is communicable with the in-vehicle ECU 30 of the corresponding vehicle in the same manner as the master key 10, and after the master key 10 is registered as a key communicable with the in-vehicle ECU 30, it is additionally registered in the in-vehicle ECU 30 in a market such as a dealer. The The sub key 20 includes a memory 22, a reception unit 23, and a transmission unit 24. The sub key 20 stores a sub key ID 21 which is an identifier unique to the sub key 20 when the sub key 20 is manufactured. After the in-vehicle ECU determines that the sub key 20 is a key that can be registered in the in-vehicle ECU 30, the ECU ID 31 is stored in the memory 22. The receiving unit 23 receives the ECU ID 31 from the in-vehicle ECU 30, and the transmitting unit 24 transmits the sub key ID 21, brand information of the sub key 20, destination information, an operation request, and the like to the in-vehicle ECU 30.

  The registration tool 70 is connected to the in-vehicle ECU 30 to transmit a registration request signal for registering the master key 10 or the sub key 20 to the in-vehicle ECU 30.

The in-vehicle ECU 30 is provided in the vehicle, and can control locking or unlocking of the vehicle door key according to an operation request from the master key 10 and the sub key 20.

The in-vehicle ECU 30 includes a memory 32, a reception unit 33, a transmission unit 34, a registration condition setting unit 35, a registration availability determination unit 36, and a verification unit 38. The memory 32 stores an ECU ID 31 that is an identifier unique to the vehicle on which the in-vehicle ECU 30 is mounted when the in-vehicle ECU is manufactured. The memory 32 stores the master key ID 11 after the registration of the master key 10 is permitted, and the sub key ID 21 after the additional registration of the sub key 20 is permitted. The receiving unit 33 receives master key ID 11, sub key ID 21, brand information and destination information of the master key 10 and sub key 20 from the transmission units 14 and 24 of the master key 10 and sub key 20. When there is a key registration request, the transmission unit 34 transmits the ECU ID 31 to the master key 10 and the sub key 20.

The registration condition setting unit 35 sets registration conditions when registering the master key 10 or the sub key 20 in the in-vehicle ECU 30. Registration conditions include an initial registration condition and an additional registration condition. An ID that can be registered in the in-vehicle ECU 30 as the master key 10 in advance at the time of initial registration is determined as the initial registration condition, and further, a condition in which the sub key 20 can be additionally registered in the in-vehicle ECU 30 is set as an additional registration condition. Set based on brand information or destination information.

The registration availability determination unit 36 determines whether or not the master key 10 and the sub key 20 can be registered in the in-vehicle ECU 30 based on the initial registration condition or the additional registration condition predetermined by the registration condition setting unit 35.

First, at the time of initial registration, the registration condition setting unit 35 sets an arbitrary initial registration condition as a condition that allows the master key ID 11 to be registered for the first time. Here, the arbitrary initial registration conditions are not unique to the in-vehicle ECU 30 but are commonly provided in all the in-vehicle ECUs. As the initial registration condition, for example, the master key ID 11 satisfies a predetermined condition. At the time of initial registration, it is determined whether the master key ID 11 satisfies the initial registration condition. If the initial registration condition is satisfied, it is determined that registration is possible, and the ID 11 is registered in the memory 32. If it is determined that registration is impossible, the ID 11 is not registered in the memory 32.

The registration condition setting unit 35 sets brand information or destination information of the master key 10 received at the time of initial registration as an additional registration condition when registering the sub key 20. At the time of additional registration, whether or not registration is possible is determined depending on whether or not the brand information or destination information that is the additional registration condition is satisfied. If the additional registration condition is satisfied, it is determined that registration is possible, and the sub key ID 21 is registered in the memory 32. If the sub key ID 21 does not satisfy the additional registration condition, it is determined that registration is impossible, and the sub key ID 21 is not registered in the memory 32.

  When the verification unit 38 receives a request for locking or unlocking the vehicle door from the master key 10 or the sub key 20, it determines whether or not the request can be permitted. The transmission units 14 and 24 of the master key 10 or the sub key 20 also transmit information regarding the master key ID 11 or the sub key ID 21 when transmitting a vehicle door lock or unlock operation request to the in-vehicle ECU 30. Here, when the receiving unit 33 of the in-vehicle ECU 30 receives a signal including the master key ID 11 or the sub key ID 21, the receiving unit 33 checks the electronic key ID registered in the memory 32. When the ID received from the master key 10 or the sub key 20 is the ID stored in the memory 32, the verification is established, and the vehicle door is locked or unlocked based on the signal from the master key 10 or the sub key 20. Can be executed. If the received ID is not the ID stored in the memory 32, the verification is not established and the vehicle door cannot be locked or unlocked.

Next, a procedure for registering the electronic key ID in the in-vehicle ECU in the electronic key registration system will be described with reference to FIGS. FIG. 2 is a flowchart of the electronic key registration system at the time of initial registration according to the embodiment, and FIG. 3 is a flowchart of the electronic key registration system at the time of additional registration according to the embodiment.

As a registration method, when registering the master key 10 in the vehicle-mounted ECU 30 in a vehicle factory, or in the market such as a dealer, when registering the master key 10 in the vehicle-mounted ECU 30 along with replacement of the vehicle-mounted ECU 30, There is an additional registration method that is registered as an electronic key communicable with the in-vehicle ECU 30 in addition to the master key 10 in the market. Hereinafter, the first registration method will be described in order.

As shown in S100 of FIG. 2, when there is a request from the registration tool for the initial registration of the master key 10 to the in-vehicle ECU 30 in a market such as a vehicle factory or a dealer, the in-vehicle ECU 30 shifts to the initial registration mode (S101). ECUID31 is transmitted to the master key 10 from the transmission part 34 of ECU30 (S102). The receiving unit 13 of the master key 10 receives the ECU ID 31 and stores it in the memory 12 (S103). Here, the vehicle-mounted ECU 30 transmits a master key ID 11 request signal to the master key 10 (S104). When the receiving unit 13 of the master key 10 receives this request signal, the transmitting unit 14 transmits the master key ID 11 and brand information or destination information of the master key 10 to the in-vehicle ECU 30 (S105).

When the receiving part 33 of the in-vehicle ECU 30 receives the master key ID 11, the registration possibility determination part 36 determines whether the master key 10 can be registered in the in-vehicle ECU 30 depending on whether the master key ID 11 satisfies the ID condition of the registration condition setting part 35. (S106). If it is determined that registration is possible, the master key ID 11 is stored in the memory 32 (S107). Then, brand information or destination information of the master key 10 received together with the master key ID 11 is set by the registration condition setting unit 35 as an additional registration condition when registering the sub key 20 (S108). On the other hand, if it is determined in S106 that the master key ID 11 does not satisfy the initial registration condition and cannot be registered, the electronic key registration operation ends. By registering the master key ID 11 in the memory 32 as an ID of a key communicable with the in-vehicle ECU 30 by the operation as described above, when the in-vehicle ECU 30 receives a vehicle door lock or unlock operation request from the master key 10. The request can be permitted by the verification unit 38.

Next, as shown in FIG. 3, a method for registering the sub key 20 in the in-vehicle ECU 30 after the initial registration of the master key 10 will be described. First, as shown in S200, if there is a request for additional registration of the sub key 20 to the in-vehicle ECU 30 after registration of the master key 10 in the market or a dealer, the in-vehicle ECU 30 enters the additional registration mode by a signal from the registration tool. Transition (S201). Thereby, the vehicle-mounted ECU 30 transmits a sub key ID 21 request signal to the sub key 20 (S202). When the reception unit 23 of the sub key 20 receives this request signal, the transmission unit 24 transmits the sub key ID 21 and the brand information or destination information of the sub key 20 to the in-vehicle ECU 30 (S203).

The in-vehicle ECU 30 that has received the sub key ID 21 by the receiving unit 33 determines whether the registration of the sub key 20 to the in-vehicle ECU 30 is possible by the registration propriety judging unit 36 (S204). Here, the registration availability determination unit 36 determines whether registration is possible based on the additional registration conditions set by the registration condition setting unit 35 in S108 when the master key 10 is registered. If it is determined that registration is possible, the sub key ID 21 is stored in the memory 32 (S205), and the ECU ID 31 is transmitted to the sub key 20 by the transmission unit 34 (S206). Thereafter, the ECU ID 31 is received by the receiving unit 23 of the sub key 20 and stored in the memory 22 (S207). By registering the sub key ID 21 in the memory 32 as an ID of a key communicable with the in-vehicle ECU 30 by the operation as described above, when the vehicle door lock or unlock operation request is received from the sub key 20, the verification unit 38 The request can be granted.

According to the electronic key registration system described above, the registration condition setting unit 35 is based on the brand information or destination information of the master key 10 obtained by the receiving unit 33 of the in-vehicle ECU 30 from the master key 10 registered at the time of initial registration. However, by setting additional registration conditions for the sub key 20 to the in-vehicle ECU 30, it is not necessary to provide a plurality of in-vehicle ECUs having different product numbers in advance. In other words, since all the in-vehicle ECUs have a common initial registration condition set, the additional registration condition for the sub key 20 is set by registering the master key 10 in the in-vehicle ECU 30 thereafter, so that the vehicle attribute is set in advance. Therefore, it is not necessary to provide a plurality of in-vehicle ECUs having different product numbers according to the above. Therefore, the number of product numbers of the in-vehicle ECU 30 can be reduced.

Further, according to the electronic key registration system described above, between the in-vehicle ECU 30 and the master key 10, the in-vehicle ECU 30 transmits the ECU ID 31 to the master key 10, and then the master key ID 11 is transmitted to the in-vehicle ECU 30. As a result, when creating an encryption key for transmitting / receiving a signal to / from the in-vehicle ECU 30 within the master key 10, the number of communications between the master key 10 and the in-vehicle ECU 30 can be reduced.

Further, between the in-vehicle ECU 30 and the sub key 20, the sub key ID 21 is transmitted from the sub key 20 to the in-vehicle ECU 30, and then the ECU ID 31 is transmitted from the in-vehicle ECU 30 to the sub key 20. Therefore, it is possible to prevent the ECU ID of the in-vehicle ECU from being transmitted even to subkeys that are not permitted to be registered in the in-vehicle ECU 30.

(Other examples)
Furthermore, in the electronic key registration system described above, information related to vehicle attributes such as the brand and destination of the vehicle is transmitted and received by a signal different from the master key and sub key IDs. It is good also as what is included in ID of a master key and a subkey, and is grasped | ascertained by ID. In this case, the registration condition setting unit 35 is not unique to the in-vehicle ECU 30, but has a classification table 200 as shown in FIG. 4 that is common to all in-vehicle ECUs. In the classification table 200, the electronic key IDs are divided into a plurality of groups 51 to 57. The plurality of groups 51 to 57 are classified by, for example, vehicle attribute information such as a destination and a brand of a vehicle provided with the in-vehicle ECU 30. At the time of initial registration, it is determined whether or not the master key ID 11 satisfies the initial registration condition, that is, whether the master key ID 11 is described in the classification table 50. If the master key ID 11 is described in the classification table 50, registration is possible. The ID 11 is registered in the memory 32. The master key ID11 is compared with the classification table 50 at the time of initial registration, one group including ID11 is identified among the groups 51 to 57, and the identified one group is set as an additional registration condition when registering the subkey 20 To do.

In the electronic key registration system described above, having the same attribute as that registered at the time of initial registration of the master key 10 is set as an additional registration condition when registering the subkey 20, but the present invention is not limited to this. . If the master key 10 is registered for the first time at the vehicle factory, the additional registration conditions as described above are set. On the other hand, if the initial registration is performed at the dealer like the ECU replacement, A plurality of attributes may be set as registration conditions as additional registration conditions. As a result, when the initial registration is performed along with the ECU replacement at the dealer, the registration can be performed under a higher security condition than when the initial registration is performed at the vehicle factory.

In the electronic key registration system described above, when there is a key ID request from the in-vehicle ECU 30, the master key ID 11 and brand information or destination information of the master key 10 are transmitted from the first electronic key 10 to the in-vehicle ECU 30. (S105) The master key ID 11 may not be transmitted, but only the brand information or destination information of the master key 10 may be transmitted. The additional registration conditions are set based on these pieces of information, and the in-vehicle ECU 30 does not determine whether to register using the master key ID. After that, the master key ID 11 is transmitted to the in-vehicle ECU 30 and registered in the memory 32, so that it is used as a determination element at the time of collation.
Thereby, the amount of information transmitted at a time can be reduced, and the communication load between the in-vehicle ECU 30 and the master key 10 can be reduced.

In the electronic key registration system described above, the embodiment has been described in which ID information is directly transmitted and received between the key and the vehicle-mounted ECU. However, the encryption key common to the vehicle-mounted ECU and the electronic key is provided. You may send and receive what encrypted each ID information with the encryption key to do.

In the electronic key registration system described above, initial registration and additional registration are performed using a registration tool. However, registration is performed by not using a registration tool or by storing information in a center via a network. May be implemented.

As mentioned above, although the Example was described in detail, these are only illustrations and do not limit a claim. The technology described in the claims includes various modifications and changes of the specific examples illustrated above.

The technical elements described in this specification or the drawings exhibit technical usefulness alone or in various combinations, and are not limited to the combinations described in the claims at the time of filing.

10 Master key 11 Master key ID
12, 22, 32 Memory 13, 23, 33 Receiver 14, 24, 34 Transmitter 20 Subkey 21 Subkey ID
30 On-vehicle ECU
31 ECUID
35 Registration Condition Setting Unit 36 Registration Permission Judgment Unit 38 Verification Unit

Claims (6)

A first identifier that is an identifier unique to the first electronic key that can communicate with the in-vehicle ECU and a second identifier that is unique to the second electronic key and that is different from the first identifier In an electronic key registration system for registering with an ECU,
The in-vehicle ECU is
Identification information capable of recognizing brand information or destination information of a vehicle on which the in-vehicle ECU capable of communicating with at least the identifier of the first electronic key and the first electronic key is received from the first electronic key. Receiving means for
Registration condition setting means for setting a registration condition when registering the second identifier in the in-vehicle ECU using the information received by the receiving means;
The on-vehicle ECU uses the registration condition to determine whether or not the second identifier can be registered in the on-vehicle ECU;
Registration means for registering the first identifier and the second identifier as identifiers of electronic keys capable of communication;
An electronic key registration system comprising: Brand information or destination information of a vehicle on which the in-vehicle ECU capable of communicating with the first electronic key is acquired from the first identifier;
The electronic key registration system according to claim 1. The identification information includes the first identifier, and includes at least one of the brand information or the destination information,
The registration condition setting means sets the registration condition using the brand information or the destination information.
The electronic key registration system according to claim 1 or 2. The registration condition setting means sets as the registration condition that either the brand information or the destination information matches.
The electronic key registration system according to any one of claims 1 to 3. The registration condition setting means changes the registration condition according to a place where the first electronic key is registered in the in-vehicle ECU.
The electronic key registration system according to any one of claims 1 to 4. The in-vehicle ECU has a third identifier unique to the vehicle in which the in-vehicle ECU is mounted,
Wherein between the vehicle ECU and the second electronic key, the registered Rokuka not determining means, when the second identifier was determined to be registered in the vehicle ECU, the third identifier To the second electronic key,
Between the vehicle-mounted ECU and the first electronic key, the first identifier is transmitted to the vehicle-mounted ECU after the third identifier is transmitted to the first electronic key;
The electronic key registration system according to claim 1, wherein: