JP2006021597A - Vehicle antitheft system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent unnecessary extension of the number of illicitly used vehicles by limiting an electronic equipment set of the same identification information generated from a plurality of regular electronic equipment mounted on a vehicle first to one, regarding a vehicle antitheft system. <P>SOLUTION: The vehicle 12 mounted with ECU 1 to 3 written with each vehicle ID constituted of vehicle number and the number of times of registration is made to provide a control center 14 with the vehicle ID written in each of the ECU 1 to 3. Only when the vehicle numbers stored in the number of times of registration data base 22 are included in the vehicle numbers extracted from each of the provided vehicle ID in the control center 14 having a number of times of registration data base 22, and the number of times of registration extracted from the vehicle ID corresponding to the provided vehicle number coincides with the number of times of registration stored in the registration data base 22, all the vehicle IDs written in the ECU 1 to 3 are updated to the same ID together. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a vehicle anti-theft system, and in particular, a vehicle equipped with a plurality of electronic devices in which identification information unique to the vehicle is written, and when all of the identification information matches, The present invention relates to a vehicle antitheft system comprising a management center having a registration database for storing vehicle-specific identification information.

  Conventionally, in order to prevent vehicle theft, an information code is stored in an ignition key, and a vehicle theft prevention system that starts an engine only when the information code stored in the ignition key is read and the authentication is established is known. (For example, refer to Patent Document 1). According to such a system, the engine start is allowed only for an ignition key that is permitted to use the vehicle in advance, so that security related to vehicle driving is improved and vehicle theft can be effectively suppressed. It becomes.

In addition, in the above-described system, in consideration of the fact that the engine cannot be started due to loss of the ignition key or the like, new key data is re-registered on the vehicle side using a dedicated tool such as a failure diagnostic device. A function is provided. When this dedicated tool is used, it is required to input a predetermined code unique to the vehicle. For this reason, even if the existing ignition key is lost, if the key data is re-registered by entering the proper password, the information code can be authenticated and the engine is started. It becomes possible.
Japanese Patent No. 3309676

  However, in the above system, if the dedicated tool and the code set on the vehicle side are obtained by any method, it becomes possible to register new key data without relying on a legitimate vehicle user. Since the engine can be started, vehicle theft can be easily performed.

  In addition, various electronic control units mounted on a vehicle may be illegally removed from one vehicle and resold and attached to another vehicle. In order to deal with such actions, a key is included. It is conceivable to request mutual authentication of identification information written in each of a plurality of electronic control units. In other words, if all of the identification information of the plurality of electronic control units match, engine start is allowed, while if they do not match, engine start is prohibited, When the electronic control unit is attached to the vehicle and the electronic control unit is replaced, the engine cannot be started and the vehicle can be prevented from being stolen. However, even in such a configuration, if the person who is trying to steal the vehicle can obtain the dedicated tool and the code set on the vehicle side illegally, the key data of all electronic control units will be updated. Since re-registration is possible, it is difficult to prevent unauthorized use of the vehicle, and the number of vehicles that are illegally used may increase by the number of electronic control units.

  This invention is made in view of the above-mentioned point, and limits the electronic device set of the same identification information produced | generated from the several regular electronic device mounted initially in one vehicle to one. Accordingly, an object of the present invention is to provide a vehicle theft prevention system that can prevent the number of vehicles illegally used from being unnecessarily increased.

  According to the first aspect of the present invention, as described in claim 1, a plurality of electronic devices in which vehicle-specific identification information is written are mounted, and vehicle-specific identification information written in each of the plurality of electronic devices all match. A vehicle anti-theft system comprising a vehicle having device control means for operating a predetermined device and a management center having a registration database for storing vehicle-specific identification information. There is provided identification information providing means for providing all of the vehicle-specific identification information written in each of the plurality of electronic devices to the management center, and the management center provides the plurality of electronic devices provided by the identification information providing means. It is determined whether or not the vehicle-specific identification information stored in the registration database is included in all the vehicle-specific identification information written. Identification information determining means, and when the identification information determining means determines that the identification information is included, all vehicle-specific identifications written in the plurality of electronic devices mounted on the vehicle All the vehicles written in the plurality of electronic devices mounted on the vehicle when the information is collectively updated and, on the other hand, when the identification information determination means determines that the identification information is not included This is achieved by a vehicle antitheft system having an identification information update control means for prohibiting the update of unique identification information.

  In the present invention, when the identification information stored in the registration database of the management center is included in all the vehicle-specific identification information written in the plurality of electronic devices provided from the vehicle, All the vehicle-specific identification information written in the plurality of electronic devices of the vehicle is updated collectively. On the other hand, if the identification information stored in the registration database of the management center is included in all the identification information unique to the vehicle written in the plurality of electronic devices provided by the vehicle, the above-described update is performed. Is prohibited. In such a configuration, even when a part of all electronic devices mounted on the vehicle is replaced due to wear or the like, all of the electronic devices after replacement are based on the identification information written in the remaining electronic devices. The identification information of the electronic devices can be updated in a batch. On the other hand, after the update, the identification information written in the electronic devices removed from the vehicle by replacement refers to the identification information at the time of the update and thereafter Since it is not updated, updating of the identification information based on the identification information of the removed electronic device can be prohibited. Therefore, the electronic device set of the same identification information generated from a plurality of authorized electronic devices that are initially mounted on one vehicle is limited to one, thereby making unnecessary the number of illegally used vehicles. Expansion is prevented.

  In this case, as described in claim 2, in the vehicle antitheft system according to claim 1, the identification information update control unit determines that the identification information determination unit includes identification information when the identification information determination unit includes the identification information. An identification information generating unit that generates vehicle-specific identification information to be written in a plurality of electronic devices; and a center transmission unit that transmits the vehicle-specific identification information generated by the identification information generating unit to the vehicle. When the vehicle-specific identification information transmitted from the center transmission unit of the management center is received after the information is provided by the identification information providing unit, the vehicle-specific identification information written in the plurality of electronic devices is What is necessary is just to have an identification information update means to update to the received identification information.

  According to a third aspect of the present invention, in the vehicle antitheft system according to the second aspect, the vehicle updates all of the identification information unique to the vehicle written in the plurality of electronic devices by the identification information updating means. An update completion notification means for notifying the management center that the update has been completed when the update is completed may be provided.

  According to a fourth aspect of the present invention, in the vehicle antitheft system according to any one of the first to third aspects, the vehicle-specific identification information includes a vehicle-specific identification number and a vehicle-specific identification number for the electronic device. The number of times the identification information is written may be configured.

  Further, as described in claim 5, in the vehicle antitheft system according to any one of claims 1 to 3, the management center has an NG database that stores identification information unique to the vehicle that should be prohibited from being updated. The identification information update control means is also stored in the NG database among all the vehicle-specific identification information written in the plurality of electronic devices provided by the identification information providing means. If identification information that should be prohibited from being updated is included, update of all vehicle-specific identification information written in the plurality of electronic devices mounted on the vehicle is prohibited. It is possible to prevent unauthorized use of an electronic device mounted on a vehicle that is prohibited from updating the identification information.

  According to a sixth aspect of the present invention, in the vehicle antitheft system according to the fourth aspect of the present invention, the management center has an NG database that stores vehicle-specific vehicle number that should be prohibited from being updated, and the identification information update control The means also prohibits the updating stored in the NG database among the chassis numbers of all the vehicle-specific identification information written in the plurality of electronic devices provided by the identification information providing means. If the vehicle chassis number is included, update of identification information is prohibited if updating of all vehicle-specific identification information written in the plurality of electronic devices mounted on the vehicle is prohibited. It is possible to prevent unauthorized use of electronic devices mounted on vehicles that should be prohibited.

  In this case, as described in claim 7, in the vehicle antitheft system according to claim 5 or 6, when the management center receives information that the vehicle theft has occurred from the outside, the management center uniquely identifies the vehicle. What is necessary is just to have an NG database registration means which stores information or a chassis number in the said NG database as identification information or chassis number intrinsic | native to the vehicle which should prohibit the said update.

  Further, as described in claim 8, in the vehicle antitheft system according to any one of claims 5 to 7, the management center receives information from the outside that the stolen vehicle has returned to the vehicle user. In addition, it is only necessary to have an NG database deleting means for deleting the vehicle-specific identification information or vehicle number as the vehicle-specific identification information or vehicle number that should be prohibited from updating from the NG database.

  By the way, as described in claim 9, in the vehicle antitheft system according to claim 4, the identification information determination means is all vehicles written in the plurality of electronic devices provided by the identification information providing means. The vehicle number identification means for determining whether or not the vehicle specific vehicle number stored in the registration database is included in the unique vehicle number, and the vehicle number is included by the vehicle number determination means A registration number determination means for determining whether or not the number of times written in the electronic device corresponding to the chassis number matches the number of times stored in the registration database. The identification information update control means determines that the chassis number is included by the chassis number determination means, and the registration number determination means determines the count. When the vehicle number is determined to match, all the vehicle-specific identification information written in the plurality of electronic devices mounted on the vehicle is updated at a time, while the vehicle number is determined by the vehicle number determination means. All of the vehicle-specific identifications written in the plurality of electronic devices mounted on the vehicle when the registration number determination means determines that the number of times does not match. Information update may be prohibited.

  Further, as described in claim 10, in the vehicle antitheft system according to claim 4 or 9, the management center is stored in the registration database when the update is executed by the identification information update control means. What is necessary is just to have a registration number count-up means for increasing the number of times corresponding to the specific chassis number of the vehicle to be updated by “1”.

  In addition, as described in claim 11, in the vehicle anti-theft system according to any one of claims 1 to 10, a vehicle that can be operated by a person and dedicatedly connected to the management center for information transmission / reception. The dedicated tool is written in each of the plurality of electronic devices when an operation for requesting update of all vehicle-specific identification information written in the plurality of electronic devices is performed. It has a tool transmitting means for transmitting to the vehicle a signal for requesting all of the vehicle-specific identification information to be provided to the management center, and the identification information providing means of the vehicle is received from the tool transmitting means of the dedicated tool. When the transmitted request signal is received, all the vehicle-specific identification information written in each of the plurality of electronic devices is sent to the management center via the dedicated tool. If subjecting, it is possible to realize the mass update of vehicle-specific identification information written in the electronic device a request operation on the dedicated tool.

  In addition, as described in claim 12, in the vehicle antitheft system according to any one of claims 1 to 11, the plurality of electronic devices are electronic keys that authenticate an electronic key possessed by a vehicle user. It is good also as including the authentication apparatus and the vehicle control apparatus which performs control of a vehicle engine, or control of steering lock / unlock.

  Further, according to the above-described object, as described in claim 13, the electronic control device mounted on the vehicle and having the identification information of the vehicle, a management center storing the vehicle identification number, and the electronic control device A vehicle anti-theft system having transmission / reception means for transmitting / receiving the vehicle identification information to / from the center, wherein the vehicle determines whether the vehicle identification information of the plurality of electronic control devices coincides when the engine of the vehicle is started. And the control center receives the vehicle identification information transmitted from the plurality of electronic control devices when the vehicle identification information of the electronic control device is updated, and receives the vehicle identification information. The plurality of vehicle identification information and the vehicle identification number registered in the management center are collated, and at least one of the received vehicle identification information is the management center Also achieved by a vehicle anti-theft system for transmitting new vehicle identification information to the plurality of electronic control device when it is determined that a vehicle identification number registered.

  According to the invention described in any one of claims 1 to 17, unauthorized use can be achieved by limiting the number of electronic devices having the same identification information generated from a plurality of authorized electronic devices first mounted on one vehicle to one. It is possible to prevent the number of vehicles to be increased from being unnecessarily increased.

  FIG. 1 shows a configuration diagram of a vehicle antitheft system 10 according to an embodiment of the present invention. As shown in FIG. 1, the vehicle anti-theft system 10 according to the present embodiment is composed of a vehicle 12 equipped with a plurality of electronic devices mainly composed of a computer, and a management center 14 communicably connected to the vehicle 12. This is a system for effectively preventing the vehicle 12 from being stolen.

  The vehicle 12 has electronic control units (hereinafter referred to as ECUs) 1 to 3 as electronic devices. As the ECUs 1 to 3, for example, an immobilizer electronic control unit (ECU) necessary for starting a vehicle engine, an engine control ECU, and an ignition key incorporating a transponder possessed by a vehicle user, or a steering necessary for releasing a steering lock There are a lock ECU, a navigation ECU that processes navigation information of the vehicle 12, and the like. In the following description, it is assumed that the ECUs 1 to 3 are all electronic devices used for starting the vehicle engine. Each of the ECUs 1 to 3 has a vehicle ID, which is vehicle-specific identification information, written in a nonvolatile memory such as an EEPROM.

  FIG. 2 shows a configuration example of the vehicle ID in the present embodiment. FIG. 3 is a diagram for explaining conditions necessary for realizing engine start of the vehicle 12 in this embodiment. In this embodiment, the vehicle IDs written in the ECUs 1 to 3 are actually written from the time of the new vehicle, as shown in FIG. The number of times (hereinafter referred to as the number of times of registration). For example, when the chassis number unique to the vehicle is “001” and the registration count is “2”, the vehicle ID written in the ECUs 1 to 3 is “0012”. Further, it is assumed that a vehicle ID of “0000” is written in a new ECU that has not been mounted on the vehicle. The same vehicle ID is allowed to be written between the ECUs 1 to 3 mounted on one vehicle 12, and the vehicle IDs written to the ECUs 1 to 3 usually match each other.

  The above-described ECUs 1 to 3 are connected to each other via an in-vehicle LAN 16. In this embodiment, in order to realize the engine start of the vehicle 12, it is necessary to turn on the starter switch while the ignition key is inserted into the ignition key cylinder or the vehicle occupant holds the ignition key in the vehicle. . When the starter switch is turned on in this way, the vehicle ID written in the ignition key is read to the vehicle side, and the vehicle ID written in the ECUs 1 to 3 such as the immobilizer ECU and the engine control ECU is authenticated and verified. Is done. When the authentication verification by the ECUs 1 to 3 is mutually established, that is, when the vehicle IDs of all the ECUs 1 to 3 match, the engine start is permitted. On the other hand, not all authentication verifications by the ECUs 1 to 3 are established, and if there is a mismatch among the vehicle IDs of the ECUs 1 to 3, the engine start is prohibited. For example, as shown in FIG. 3, when ECU1 and ECU2 have a vehicle ID of “001”, while ECU3 has a vehicle ID of “002”, all vehicle IDs match. Since the above is not established, engine start is prohibited.

  According to this processing, when the ECUs 1 to 3 of one vehicle 12 include ECUs (electronic devices) whose vehicle IDs do not match, it is impossible to start the engine. When it is done in part, it is impossible to drive the vehicle as it is, and as a result, it is possible to prevent the vehicle itself from being stolen, and that unauthorized removal or installation of the ECU does not make sense It becomes possible to do.

  On the other hand, the situation in which the engine cannot be started and the vehicle cannot be driven as described above is not limited to the case where the vehicle theft has illegally replaced the ECUs 1 to 3, but the authorized vehicle user has lost the ignition key. It may also occur when the ECUs 1 to 3 are replaced due to a failure of the ECUs 1 to 3 or the like. However, if the vehicle theft is replaced by an electronic device, it is appropriate to prohibit engine start and keep the vehicle in an impossible state. When replacement is performed, it is not appropriate to prohibit engine start and keep the vehicle running in an impossible state.

  Therefore, the vehicle antitheft system 10 according to the present embodiment eliminates as much as possible the engine start by the vehicle theft even after the ECUs 1 to 3 are replaced, while enabling the vehicle 12 to start the engine by the authorized vehicle user. It is possible to re-register (update) the vehicle IDs written in the plurality of ECUs 1 to 3 installed in the vehicle, and to establish the vehicle ID verification.

  That is, as shown in FIG. 1, the vehicle anti-theft system 10 of the present embodiment is a dedicated external tool (hereinafter referred to as “re-registration” of vehicle IDs written in a plurality of ECUs 1 to 3 mounted on the vehicle 12. , Referred to as a dedicated tool) 20. The dedicated tool 20 is a portable tool or a fixed tool installed at a predetermined location, and can realize a function according to the operation of the operator according to a predetermined program. The dedicated tool 20 can be connected to the in-vehicle LAN 16 that connects the ECUs 1 to 3 of the vehicle 12, and requests re-registration of the vehicle ID written in the ECUs 1 to 3 under such a connection. When the operation to perform is performed, a signal requesting provision / transmission of the vehicle ID written to each of the ECUs 1 to 3 connected via the in-vehicle LAN 16 is transmitted.

  The dedicated tool 20 has a function of realizing a wireless communication connection using a mobile phone or a wired communication connection using a fixed phone, for example, with the management center 14 described above. Therefore, the vehicle 12 can be connected to the management center 14 via the dedicated tool 20, and the vehicle 12 and the management center 14 can send and receive information via the dedicated tool 20. is there. The vehicle 12 provides / transmits the vehicle ID written in each of the ECUs 1 to 3 to the management center 14 via the dedicated tool 20 in response to a request from the dedicated tool 20.

  The management center 14 includes a registration number database 22 that stores a vehicle ID for each vehicle 12, that is, a vehicle number and a registration number, and an NG database 24 that stores a vehicle number of the vehicle 12 for which re-registration of the vehicle ID should be prohibited. Have. The registration number database 22 stores the vehicle ID of the vehicle 12 in advance when a new vehicle is purchased, or stores the vehicle ID of the vehicle 12 when a predetermined registration procedure is performed after purchasing the new vehicle. The NG database 24 stores the chassis number at the time when the processing described later is performed. When the management center 14 is provided with the vehicle IDs of the ECUs 1 to 3 from the vehicle 12 via the dedicated tool 20, the management center 14 is mounted on the vehicle 12 by referring to the data stored in the databases 22 and 24, as will be described in detail later. The process for re-registering the vehicle ID written in the plurality of ECUs 1 to 3 is executed.

  FIG. 4 shows an example of an operation flowchart executed in the vehicle antitheft system 10 of this embodiment. FIG. 4 shows a case where the vehicle ID is re-registered by a regular vehicle user. In the system of the present embodiment, when re-registering the vehicle IDs written in the plurality of ECUs 1 to 3 that are authentication targets for starting the engine mounted on the vehicle 12, the registrant First, in the vehicle 12, the ECUs 1 to 3 and the dedicated tool 20 are connected via the in-vehicle LAN 16, and the vehicle number of the vehicle 12 about to re-register the vehicle ID for the dedicated tool 20 in such a state. Input operation. It should be noted that the input of a personal identification code or biometric authentication may be requested during this input operation, and the following processing may be executed only when such authentication is established.

  When the chassis number of the vehicle 12 is input to the dedicated tool 20 in this way, the dedicated tool 20 provides / transmits the written vehicle ID to each ECU 1 to 3 connected via the in-vehicle LAN 16. Is transmitted (hereinafter referred to as a transmission request signal) (step 100). When each ECU 1 to 3 receives a transmission request signal related to the vehicle ID from the connected dedicated tool 20, the ECU 1 shifts to a mode in which the written vehicle ID is re-registered and reads the currently written vehicle ID. Provided and transmitted to the dedicated tool 20 via the in-vehicle LAN 16. The dedicated tool 20 acquires the vehicle IDs provided from all the ECUs 1 to 3 to be authenticated after transmitting the transmission request signal (step 102). For example, if the ECU 1 is a new ECU and the ECU n has a vehicle ID of “0012”, the dedicated tool 20 acquires the vehicle ID of “0012” together with the vehicle ID of “0000”.

  The dedicated tool 20 is connected to the management center 14 when the chassis number of the vehicle 12 to be re-registered with the vehicle ID is input and the vehicle IDs from all the ECUs 1 to 3 to be authenticated are obtained. A signal (hereinafter referred to as a re-registration request signal) requesting that the vehicle ID re-registration processing should be performed with the input vehicle number and all the vehicle IDs of the ECUs 1 to 3 being transmitted to the control unit 14 is transmitted (14). Step 104).

  When the management center 14 receives a re-registration request signal transmitted from the vehicle 12, specifically from the dedicated tool 20 connected to the vehicle 12, first, the vehicle center number is determined from the transmitted vehicle IDs of the ECUs 1 to 3. To extract. For example, when the vehicle ID “0000” and the vehicle ID “0012” are transmitted, the chassis numbers “000” and “001” are extracted, respectively. Then, it is determined whether or not a chassis number matching the input chassis number (for example, “001”) transmitted to at least one of all the extracted chassis numbers is included (step 106). As a result, if it is determined that at least one of the extracted chassis numbers includes the same chassis number as the input chassis number, then the same chassis number as the chassis number input to the dedicated tool 20 is obtained. It is confirmed whether it is stored in the NG database 24 (step 108).

  The management center 14 includes an input vehicle number (for example, “001”) in at least one of the extracted vehicle numbers of the ECUs 1 to 3 transmitted from the vehicle 12 side, and the input vehicle number (“001”). If it is determined that the same chassis number is not stored in the NG database 24, the number of registrations (for example, “2”) corresponding to the same chassis number as the input chassis number (“001”) is then set to the vehicle 12. The number of registrations corresponding to the vehicle number stored in the registration number database 22 is read out from the vehicle ID (“0012”) transmitted from the side (step 110). And it is discriminate | determined whether the frequency | count of registration extracted from the transmission vehicle ID corresponds with the frequency | count of registration corresponding to the vehicle number stored in the registration frequency database 22 (step 112). As a result, if it is determined that the number of registrations is the same, next, a process of generating vehicle IDs to be written in all the ECUs 1 to 3 that are authentication targets currently mounted on the vehicle 12 is executed (step 114). .

  In the present embodiment, the vehicle ID generation process includes the same chassis number as the input chassis number included in at least one of the extracted chassis numbers of the ECUs 1 to 3 transmitted from the vehicle 12, and the above step 112. This is realized by combining the number of registrations determined to match with the number of times obtained by adding “1”. For example, when the input chassis number is “001” and the registered number of times is “2”, a vehicle ID “0013” is newly generated.

  When the management center 14 generates a new vehicle ID, the management center 14 updates the registration count corresponding to the chassis number included in the new vehicle ID stored in the registration count database 22, thereby changing the registration count to the chassis number. Is recorded in the registration number database 22 (step 116), and a signal indicating that the new vehicle ID should be re-registered with the new vehicle ID is transmitted to the dedicated tool 20 for communication connection. (Step 118).

  When the dedicated tool 20 transmits a re-registration request signal to the management center 14 and then receives a signal indicating that the vehicle ID should be re-registered with a new one from the management center 14, the dedicated tool 20 passes through the in-vehicle LAN 16. The new vehicle ID (for example, “0013”) transmitted from the management center 14 is written to each of the ECUs 1 to 3 to be authenticated to re-register (update) the written vehicle ID. ) Is executed (step 120). When the re-registration of the vehicle ID is completed, each of the ECUs 1 to 3 cancels the mode for re-registering the vehicle ID and shifts to the normal mode. When the dedicated tool 20 completes the re-registration of all vehicle IDs written in the ECUs 1 to 3 to be authenticated, the dedicated tool 20 re-registers the vehicle IDs of all electronic devices with respect to the management center 14 connected for communication. Is notified (step 122).

  In the present embodiment, the management center 14 immediately after generating a new vehicle ID in step 114, the registration number corresponding to the chassis number included in the new vehicle ID stored in the registration number database 22. However, after receiving the notification that the re-registration of the vehicle ID has been completed from the dedicated tool 20 in step 122, the number of registrations in the registration number database 22 may be updated. .

  FIG. 5 is a diagram illustrating a state before and after the re-registration of the vehicle ID written in each of the ECUs 1 to 3 when the re-registration of the vehicle ID is normally performed in the system of the present embodiment. For example, as shown in FIG. 5, when the ECU 1 mounted on the vehicle 12 has a vehicle ID of “0012” and both the ECU 2 and the ECU 3 are new ECUs, a dedicated tool connected to the in-vehicle LAN 16 of the vehicle 12 When the chassis number “001” is input to 20, the provision and transmission of the vehicle ID written in each ECU 1 to 3 connected to the dedicated tool 20 is requested, and the vehicle ID information “0012” of each ECU 1 to 3 is requested. , “0000” is transmitted to the management center 14 as a re-registration request signal together with the chassis number information “001” input to the dedicated tool 20.

  When the number of registrations corresponding to the chassis number “001” stored in the registration number database 22 of the management center 14 is “2” and the chassis number “001” is not stored in the NG database 24, the management center When 14 receives “0012” and “0000” as vehicle ID information of each ECU 1 to 3 from the dedicated tool 20 and receives “001” as vehicle number information input to the dedicated tool 20, the information is written in each ECU 1 to 3. The same chassis number as the input chassis number “001” is included in the chassis number (“001”, “000”) extracted from the received vehicle ID, and the same as the input chassis number “001”. The chassis number is not stored in the NG database 24, and is further extracted from the vehicle ID written in the ECU 1 transmitted from the vehicle 12 side. Vehicle ID “0013” to be written in all ECUs 1 to 3 currently mounted on the vehicle 12, assuming that the registration count “2” corresponding to the vehicle chassis number “001” matches the registration count in the registration count database 22. The new vehicle ID information is generated and transmitted from the management center 14 to the dedicated tool 20, and the same new vehicle ID “0013” is written in each of the ECUs 1 to 3 of the vehicle 12. If the same processing is performed under the same conditions except that the ECU 2 and the ECU 3 are new ECUs, the same applies even when the ECU 2 and the ECU 3 have a vehicle ID having a chassis number other than “001”. Results are obtained.

  FIG. 6 is a diagram illustrating an aspect in which re-registration of the vehicle ID written in the ECUs 1 to 3 in this embodiment is prohibited. On the other hand, when all of the three ECUs 1 to 3 mounted on the vehicle 12 are replaced with new ones, they are attached to a re-registration request signal transmitted from the vehicle 12 side, that is, the dedicated tool 20 to the management center 14. The vehicle IDs of the ECUs 1 to 3 are all “0000”. In this case, even when the chassis number input to the dedicated tool 20 matches “000” which is a portion corresponding to the chassis number of the vehicle ID, the management center 14 has the vehicle ID “0000”. Since the vehicle number is “000” or the registration count is “0”, the re-registration of the vehicle ID is prohibited or the re-registration of the new vehicle ID is prohibited. Is prohibited.

  As described above, according to the system of the present embodiment, even if any one or two of the three ECUs 1 to 3 mounted on the vehicle 12 are replaced with new ones or used ones, the remaining ECUs 1 to 3 remain. The vehicle ID rewritten in the vehicle 12 and the management center 14 by using the vehicle ID written in the vehicle ID, the vehicle ID written in all the ECUs 1 to 3 mounted on the vehicle 12 is set to the same vehicle. It is possible to re-register (update) all at once in the ID. When the ECUs 1 to 3 mounted on the vehicle 12 have vehicle IDs that match each other, the authentication verification is mutually established by the ECUs 1 to 3, so that the engine can be started. Therefore, according to the system of the present embodiment, even when the authorized vehicle user is forced to replace the ECUs 1 to 3 due to the loss of the ignition key, the failure of the ECUs 1 to 3, or the like, It becomes possible to use the vehicle 12 as usual by re-registering the vehicle ID written in all the ECUs 1 to 3.

  FIG. 7 shows an operation flowchart executed at the time of vehicle theft in the vehicle theft prevention system 10 of the present embodiment. In FIG. 7, steps that execute the same processing as the steps shown in FIG. 4 are given the same reference numerals, and descriptions thereof are omitted or simplified. That is, in the vehicle antitheft system 10 of this embodiment, the owner / user of the vehicle 12 specifies the chassis number or license plate of the vehicle 12 to the management center 14 and the vehicle 12 has been stolen. When contact is made, or the vehicle theft is detected using an inclination sensor or an intrusion sensor disposed on the vehicle 12, the theft report automatically identifies the vehicle number of the vehicle 12 or the license plate, etc. Is transmitted to the management center 14 (step 200), the management center 14 determines the stolen vehicle based on the transmission information and link information between the license plate and the like and the vehicle number stored in advance as necessary. Twelve chassis numbers (for example, “001”) are specified (step 202). Then, the identified chassis number is stored in the NG database 24 as the chassis number of the vehicle 12 whose re-registration of the vehicle ID should be prohibited (step 204).

  In this case, after that, when the process of re-registering the vehicle ID using the dedicated tool 20 is started, the input vehicle number is input to at least one of the extracted vehicle numbers of the ECUs 1 to 3 transmitted from the vehicle 12 side. If ("001") is included, the management center 14 determines that the same chassis number ("001") as the input chassis number is stored in the NG database 24 (step 108). If this determination is made, the management center 14 then transmits a signal indicating that re-registration of the vehicle ID is rejected to the dedicated tool 20 that is connected for communication (step 210).

  When the dedicated tool 20 receives a signal indicating that the re-registration of the vehicle ID is rejected from the management center 14 after transmitting the re-registration request signal to the management center 14, the dedicated tool 20 is connected via the in-vehicle LAN 16. A signal indicating that the mode for re-registering the vehicle ID should be canceled is supplied to each of the ECUs 1 to 3 to be authenticated (step 212). At this time, the dedicated tool 20 may display on the predetermined display unit that the vehicle ID cannot be re-registered. When each ECU 1 to 3 receives a signal from the dedicated tool 20 to instruct that the mode for re-registering the vehicle ID should be canceled, the ECU 1 cancels the mode and shifts to the normal mode.

  Thus, according to the system of the present embodiment, the chassis number of the stolen vehicle 12 is stored in the NG database 24 as the chassis number for which re-registration of the vehicle ID should be prohibited, and thereafter the vehicle 12 of that chassis number is stored. Even if re-registration of the vehicle ID is requested for each of the ECUs 1 to 3, re-registration can be prohibited. In this case, the vehicle ID that has been written in the ECU 1 to 3 mounted on the stolen vehicle 12 is used, or at least one of the ECUs 1 to 3 is removed from the vehicle 12 and the other vehicle is stolen. Since the vehicle ID re-registration using the vehicle IDs written in the ECUs 1 to 3 in other vehicles attached to the vehicle is suppressed, the vehicle 12 should therefore prohibit the vehicle ID re-registration. Therefore, after the chassis number is stored in the NG database 24, it is possible to prevent the ECUs 1 to 3 mounted on the vehicle 12 from being misappropriated.

  FIG. 8 shows an operation flowchart executed at the time of unauthorized re-registration in the vehicle anti-theft system 10 of this embodiment. In FIG. 8, steps that execute the same processing as the steps shown in FIG. 4 are given the same reference numerals, and descriptions thereof are omitted or simplified. That is, in the vehicle antitheft system 10 of the present embodiment, after a transmission request signal is transmitted from the dedicated tool 20 connected to the ECUs 1 to 3 to the ECUs 1 to 3 via the in-vehicle LAN 16 (step 100), the ECUs 1 to 3 are transmitted. At least one of the chassis numbers included in each vehicle ID provided / transmitted to the management center 14 via the dedicated tool 20 includes the same chassis number as the input chassis number in the dedicated tool 20, Even when the chassis number is not stored in the NG database 24, the registration count corresponding to the chassis number extracted from the vehicle ID transmitted from the vehicle 12 is stored in the registration count database 22. When the number of registrations corresponding to the chassis number does not match (that is, at the time of negative determination in step 112), the management center 4, to the dedicated tool 20 for communication connection, and transmits a signal indicating to reject the re-registration of the vehicle ID (step 250).

  When the dedicated tool 20 receives a signal indicating that the re-registration of the vehicle ID is rejected from the management center 14 after transmitting the re-registration request signal to the management center 14, the dedicated tool 20 is connected via the in-vehicle LAN 16. A signal instructing to cancel the mode for re-registering the vehicle ID is supplied to each of the ECUs 1 to 3 to be authenticated (step 252). At this time, the dedicated tool 20 may display on the predetermined display unit that the vehicle ID cannot be re-registered. When each ECU 1 to 3 receives a signal from the dedicated tool 20 to instruct that the mode for re-registering the vehicle ID should be canceled, the ECU 1 cancels the mode and shifts to the normal mode.

  FIG. 9 is a diagram illustrating an aspect in which re-registration of the vehicle ID written in the ECUs 1 to 3 is prohibited in the vehicle anti-theft system 10 of the present embodiment. For example, when the ECUs 1 and 3 mounted on the vehicle 12 are both new and the vehicle ID “0012” is written in the ECU 2, the chassis number input to the dedicated tool 20 is “001”, and Even if the chassis number “001” is not stored in the NG database 24, the registration count corresponding to the chassis number “001” stored in the registration count database 22 is the registration count “2” from the vehicle 12 side. If it is larger than “3”, for example, re-registration of the vehicle ID written in these ECUs 1 to 3 is prohibited.

  If the registration count corresponding to the chassis number stored in the registration count database 22 is larger than the registration count corresponding to the chassis number currently written in the ECUs 1 to 3 mounted on the vehicle 12, It can be determined that the re-registration of the vehicle ID has already been performed for the ECUs 1 to 3 actually mounted on the vehicle 12 and the other ECUs mounted on the common vehicle 12 in the past. Therefore, according to the system of the present embodiment, re-registration of the vehicle ID related to the writing of at least one of the ECUs 1 to 3 in which the vehicle IDs that are mounted on the common vehicle 12 and are identical to each other is written even once. If this happens, re-registration of vehicle IDs for the other ECUs 1 to 3 can be prohibited except when the re-registration is performed collectively.

  FIG. 10 is a diagram comparing a mode in which re-registration of the vehicle ID written in the ECUs 1 to 3 is permitted and a mode in which it is prohibited in the vehicle anti-theft system 10 of the present embodiment. That is, when the vehicle IDs written in the ECUs 1 to 3 mounted on the vehicle 12 are all “0011”, the ECU 1 is detached from the vehicle 12 and attached to another vehicle, or the vehicle 12. When the ECU 2 or 3 other than the ECU 1 is removed and the ECU 1 remains in the vehicle 12, immediately after that, the chassis number “001” is input with the dedicated tool 20 connected to the vehicle 12 having the ECU 1. Sometimes, re-registration of vehicle IDs written in all the replaced ECUs 1 to 3 mounted on the vehicle 12 is permitted. In this case, when such re-registration is performed, the number of registrations corresponding to the chassis number “001” is “2” in the registration number database 22.

  However, after such re-registration is performed, the chassis number “001” is again input by the dedicated tool 20 connected to the vehicle 12 equipped with the ECU 2 or 3 that previously had the same vehicle ID as that ECU 1. In addition, the vehicle ID written in the ECU 2 or 3 is “0011” and the number of registrations extracted from the vehicle ID is “1”, while the vehicle number “001” stored in the registration number database 22 is stored. Since the number of registrations corresponding to "2" is already "2", the number of registrations does not match, and re-registration of the vehicle IDs of all ECUs 1 to 3 after replacement in the vehicle 12 equipped with the ECU 2 or 3 is prohibited. Is done.

  After the above re-registration, the dedicated tool 20 connected to the vehicle 12 equipped with the ECU 2 or 3 having the same vehicle ID as that of the ECU 1 before, for example, “002” other than “001” Even when the chassis number “003” is input, when a vehicle ID consisting of the chassis number “002” or “003” is not written in the vehicle 12, for example, a new ECU is mounted, Since the input chassis number in the dedicated tool 20 and the chassis number of the vehicle ID written in the ECU 2 or 3 do not match, the vehicle IDs of all ECUs 1 to 3 after replacement in the vehicle 12 equipped with the ECU 2 or 3 Re-registration is prohibited.

  As described above, according to the system of the present embodiment, the ECUs 1 to 3 in which the same vehicle IDs are written on the basis of the regular ECUs 1 to 3 that are initially mounted on one vehicle 12 and assigned the same vehicle IDs. The generation of a plurality of sets with the same chassis number is prevented. That is, the set of ECUs 1 to 3 with the same vehicle number generated from the regular ECUs 1 to 3 that are initially mounted on one vehicle 12 and assigned the same vehicle ID is limited to one. For this reason, even when the vehicle 12 is stolen or when the ECUs 1 to 3 mounted on the vehicle 12 are illegally removed, the vehicle that is illegally used after the authentication verification by re-registration of the vehicle ID is subsequently performed. It is possible to prevent the number from increasing unnecessarily, specifically, from increasing by the number of the plurality of ECUs 1 to 3 to be authenticated when starting the engine.

  In the above embodiment, the vehicle ID is “vehicle-specific identification information” described in the claims, and the ECUs 1 to 3 are “electronic devices” and “electronic key authentication devices” described in the claims. , And “vehicle control device”, the engine corresponds to “predetermined equipment” recited in the claims, and the registration count database 22 corresponds to “registration database” recited in the claims.

  In the above-described embodiment, the vehicle 12 starts the engine when the vehicle IDs written in the mounted ECUs 1 to 3 coincide with each other, thereby “equipment control means” described in the claims. However, in response to the reception of the transmission request signal from the dedicated tool 20, the vehicle ID currently written in each of the ECUs 1 to 3 is read out and provided to the dedicated center 20 and then to the management center 14, and transmitted to the claims. The described “identification information providing means” receives a signal indicating that the vehicle ID should be re-registered via the dedicated tool 20 from the management center 14 and updates the vehicle IDs of the mounted ECUs 1 to 3 to new ones. By re-registering, the “identification information updating means” described in the scope of the claims causes the dedicated tool 20 connected to the vehicle 12 to execute the process of step 122. Is "update completion notifying means" described in the claims, "Tool transmission means" is realized as described in the claims by performing the processing of step 100 by the.

  Furthermore, in the above embodiment, the management center 14 executes the process of step 106, so that the “identification information determination means” and the “chassis number determination means” described in the claims perform the process of step 112. When executed, the “identification information determination means” and the “registration count determination means” described in the claims do not re-register the vehicle IDs written in the ECUs 1 to 3 mounted on the vehicle 12 in a lump. Accordingly, the “identification information update control unit” described in the claims executes the process of step 114, and the “identification information generation unit” described in the claims executes the process of step 118. The “center transmission unit” described in the claims by executing the processing of step 204 causes “NG data” described in the claims to Over scan registration means ", the" registration number count-up means "described in the claims by performing the process of step 116 is implemented, respectively.

  By the way, in the above embodiment, the vehicle number of the vehicle 12 that should be prohibited from re-registration of the vehicle ID is stored in the NG database 24 by communication from the vehicle owner or the report from the vehicle 12 itself. After that, when the vehicle owner receives a notification that the stolen vehicle has returned to his / her hand or when a cancellation report is received from the vehicle 12 itself by the cancellation operation, the chassis number of the vehicle 12 is deleted from the NG database 24. It is good to do. In this case, the management center 14 deletes the chassis number from the NG database 24 to realize the “NG database deleting means” described in the claims.

  In such a configuration, the management center 14 gives a password or the like necessary for the deletion process to the vehicle owner or the like when the vehicle number is stored or stored in the NG database 24, or the vehicle owner or the like The information may be stored, and then the stored / stored vehicle number may be deleted from the NG database 24 only when a password is input or biometric authentication of the vehicle owner or the like is established.

  In the above embodiment, the registration number database 22 stores the vehicle ID including the chassis number for each vehicle 12 and the number of registrations. However, the vehicle IDs for all the vehicles 12 registered as new vehicles are stored. The vehicle ID may be stored only for a vehicle that has been re-registered once after the new vehicle registration.

  That is, when a new vehicle is registered, a predetermined vehicle ID is written in the ECUs 1 to 3 mounted on the vehicle 12, but the vehicle ID of the vehicle 12 is not stored in the registration count database 22. When the re-registration of the vehicle ID is requested after the exchange of 3 to 3, the dedicated tool 20 inputs at least one of the vehicle number of the vehicle IDs written in the ECUs 1 to 3 mounted on the vehicle 12 at that time. When the first vehicle number after the new vehicle registration is included, vehicle IDs to be written in all the ECUs 1 to 3 that are the authentication targets are generated without comparing the number of registrations (step 112) ( At the same time as step 114), after that, the chassis number and the registration count are stored in the registration count database 22 only after being linked.

  According to such a configuration, it is not necessary to store / store the vehicle ID in the registration count database 22 for the vehicle 12 with the chassis number for which the vehicle ID has not been re-registered even once after the new vehicle registration. . At this time, the vehicle ID “XXX1” is not stored in the registration count database 22. Therefore, according to this system, it is not necessary to store the vehicle IDs for all the vehicles 12 registered as new cars, so the amount of information stored in the registration number database 22 does not become excessive, and the amount of information is reduced. It becomes possible to do.

  Further, in the above embodiment, when re-registering the vehicle ID written in the ECUs 1 to 3 mounted on the vehicle 12, the vehicle ID can be connected to the in-vehicle LAN 16 of the vehicle 12 and connected to the management center 14. Although the dedicated tool 20 is provided, the dedicated tool 20 may be a separate body from the vehicle 12 and is incorporated in the vehicle 12 from the beginning of manufacture, that is, the dedicated tool 20. It is good also as using the vehicle-mounted communication apparatus etc. which have the same function as.

  Moreover, in said Example, although ECU1-3 required when starting a vehicle engine as a vehicle-mounted electronic device was used, this invention is not limited to this, When releasing steering lock Therefore, the present invention can be applied to necessary ECUs.

It is a block diagram of the vehicle antitheft system which is one Example of this invention. It is a structural example of vehicle ID in a present Example. It is a figure for demonstrating conditions required in order to implement | achieve the engine start of a vehicle in a present Example. It is an operation | movement flowchart performed at the normal time in the vehicle antitheft system of a present Example. It is a figure showing the mode before and after re-registration of vehicle ID written in each electronic device in case vehicle ID re-registration is performed normally in the vehicle antitheft system of a present Example. It is a figure showing the aspect which prohibits re-registration of vehicle ID written in an electronic device in the vehicle antitheft system of a present Example. It is an operation | movement flowchart performed at the time of vehicle theft in the vehicle antitheft system of a present Example. It is an operation | movement flowchart performed at the time of fraudulent re-registration in the vehicle antitheft system of a present Example. It is a figure showing the aspect which prohibits re-registration of vehicle ID written in an electronic device in the vehicle antitheft system of a present Example. It is the figure which compared the aspect which permits the re-registration of vehicle ID written in an electronic device, and the prohibition aspect in the vehicle antitheft system of a present Example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Vehicle antitheft system 12 Vehicle 14 Management center 20 Dedicated tool 22 Registration frequency database 24 NG database

Claims (17)

A plurality of electronic devices in which vehicle-specific identification information is written are mounted, and device control means for operating a predetermined device when vehicle-specific identification information written in each of the plurality of electronic devices is identical. A vehicle theft prevention system comprising a vehicle and a management center having a registration database for storing vehicle-specific identification information,
The vehicle has identification information providing means for providing all of the vehicle-specific identification information written in each of the plurality of electronic devices to the management center in a predetermined case,
The management center includes vehicle-specific identification information stored in the registration database among all vehicle-specific identification information written in the plurality of electronic devices provided by the identification information providing unit. Identification information determination means for determining whether or not the identification information is included by the identification information determination means, all written in the plurality of electronic devices mounted on the vehicle If the identification information discriminating means determines that the identification information is not included, the identification information unique to the vehicle is written in the plurality of electronic devices mounted on the vehicle. And an identification information update control means for prohibiting updating of all vehicle-specific identification information. The identification information update control unit generates identification information unique to a vehicle to be written in the plurality of electronic devices when the identification information determination unit determines that the identification information is included, and Center transmitting means for transmitting the vehicle-specific identification information generated by the identification information generating means to the vehicle,
When the vehicle receives the vehicle-specific identification information transmitted from the center transmission unit of the management center after providing the information by the identification information providing unit, the vehicle-specific identification information written in the plurality of electronic devices 2. The vehicle antitheft system according to claim 1, further comprising identification information updating means for updating the received identification information to the received identification information.   When the vehicle has completed updating all of the vehicle-specific identification information written in the plurality of electronic devices by the identification information updating unit, the vehicle notifies the management center of the completion of the update. The vehicle antitheft system according to claim 2, further comprising:   4. The vehicle-specific identification information is composed of a vehicle-specific chassis number and the number of times the vehicle-specific identification information has been written to the electronic device. The vehicle antitheft system according to claim 1. The management center has an NG database for storing vehicle-specific identification information that should be prohibited from being updated,
The identification information update control means also updates the update stored in the NG database among all the vehicle-specific identification information written in the plurality of electronic devices provided by the identification information providing means. When the identification information to be prohibited is included, updating of all vehicle-specific identification information written in the plurality of electronic devices mounted on the vehicle is prohibited. The vehicle antitheft system according to any one of claims 1 to 3. The management center has an NG database that stores vehicle-specific chassis numbers that should be prohibited from being updated,
The identification information update control means is also stored in the NG database among the chassis numbers of all vehicle-specific identification information written in the plurality of electronic devices provided by the identification information providing means. When the vehicle number that should be prohibited from being updated is included, updating of all vehicle-specific identification information written in the plurality of electronic devices mounted on the vehicle is prohibited. The vehicle antitheft system according to claim 4.   When the management center receives information indicating that the vehicle theft has occurred from the outside, the management center stores the unique identification information or vehicle number of the vehicle in the NG database as vehicle-specific identification information or vehicle number that should be prohibited from being updated. 7. The vehicle antitheft system according to claim 5, further comprising an NG database registration means for storing.   When the management center receives information from the outside that the stolen vehicle has returned to the vehicle user, the vehicle-specific identification information or vehicle number as the vehicle-specific identification information or vehicle number that should be prohibited from being updated The vehicle antitheft system according to any one of claims 5 to 7, further comprising an NG database deleting unit that deletes the NG database from the NG database. The identification information discriminating means includes a vehicle-specific chassis number stored in the registration database among all vehicle-specific chassis numbers written in the plurality of electronic devices provided by the identification information providing means. The chassis number determination means for determining whether or not the vehicle body number is included, and when the chassis number determination means determines that the chassis number is included, the electronic device corresponding to the chassis number is written in the electronic device Registration number determination means for determining whether or not the number of times matches the number of times stored in the registration database,
The identification information update control means is mounted on the vehicle when it is determined that the chassis number is included by the chassis number determination means and the number of times is matched by the registration number determination means. All the vehicle-specific identification information written in a plurality of electronic devices is updated at a time, while it is determined that the vehicle number is not included by the vehicle number determination unit, or the number of times is determined by the registration number determination unit. 5. The vehicle according to claim 4, wherein when it is determined that the two do not match, updating of all vehicle-specific identification information written in the plurality of electronic devices mounted on the vehicle is prohibited. Anti-theft system.   When the update is executed by the identification information update control means, the management center increments the number of times corresponding to a specific chassis number of the vehicle to be updated stored in the registration database by “1”. 10. The vehicle antitheft system according to claim 4 or 9, further comprising a registration count counting means. It is equipped with a dedicated tool that can be operated by humans to connect the vehicle and the management center for communication.
The dedicated tool, when an operation for requesting update of all vehicle-specific identification information written in the plurality of electronic devices is performed, includes vehicle-specific identification written in each of the plurality of electronic devices. Tool transmission means for transmitting to the vehicle a signal requesting that all of the information be provided to the management center;
The vehicle identification information providing means receives all the vehicle specific identification information written in each of the plurality of electronic devices when the request signal transmitted from the tool transmission means of the dedicated tool is received. The vehicle antitheft system according to any one of claims 1 to 10, wherein the vehicle antitheft system is provided to a management center via a tool.   The plurality of electronic devices include an electronic key authentication device that performs authentication of an electronic key possessed by a vehicle user and a vehicle control device that performs control of a vehicle engine or steering lock / unlock. The vehicle antitheft system according to any one of claims 1 to 11. A plurality of electronic control units mounted on a vehicle and having identification information of the vehicle; a management center storing a vehicle identification number; and a transmission / reception means for transmitting and receiving the identification information of the vehicle from the electronic control unit to the management center. A vehicle anti-theft system comprising:
The vehicle determines whether the vehicle identification information of the plurality of electronic control devices match when starting the engine of the vehicle, and permits the start of the engine if they match.
The management center receives vehicle identification information transmitted from the plurality of electronic control devices when the vehicle identification information of the electronic control device is updated, and is registered in the received plurality of vehicle identification information and the management center. A plurality of electronic control units, when it is determined that at least one of the received vehicle identification information has a vehicle identification number registered in the management center. A vehicle anti-theft system characterized by transmitting information. The vehicle anti-theft system according to claim 13,
The vehicle theft prevention system, wherein the vehicle identification number registered in the management center is a chassis number. 15. The vehicle anti-theft system according to claim 14,
The vehicle identification information is characterized in that the vehicle identification information includes an identification number of the vehicle and the number of registration times of the vehicle identification information. The vehicle anti-theft system according to claim 13,
The management center has an NG database that stores a specific vehicle identification number that refuses to update the vehicle identification information, and at least one of the received plurality of vehicle identification information is stored in the NG database. The vehicle antitheft system characterized by rejecting the update of the vehicle identification information when it is determined that the vehicle identification information is included. The vehicle anti-theft system according to claim 15,
The management center has a registration number database for storing the number of registrations of the vehicle identification information for each vehicle identification number, and the number of registrations of the received vehicle identification information having the vehicle identification number is the registration number. A vehicle theft prevention system, wherein if the number of registrations of the vehicle identification information recorded in the frequency database does not match, the update of the vehicle identification information is rejected.

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