WO2019216330A1 - 車載更新装置、更新処理方法及び更新処理プログラム - Google Patents

車載更新装置、更新処理方法及び更新処理プログラム Download PDF

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Publication number
WO2019216330A1
WO2019216330A1 PCT/JP2019/018328 JP2019018328W WO2019216330A1 WO 2019216330 A1 WO2019216330 A1 WO 2019216330A1 JP 2019018328 W JP2019018328 W JP 2019018328W WO 2019216330 A1 WO2019216330 A1 WO 2019216330A1
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WIPO (PCT)
Prior art keywords
update
vehicle
program
version
programs
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
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PCT/JP2019/018328
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English (en)
French (fr)
Japanese (ja)
Inventor
哲矢 野田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sumitomo Wiring Systems Ltd
AutoNetworks Technologies Ltd
Sumitomo Electric Industries Ltd
Original Assignee
Sumitomo Wiring Systems Ltd
AutoNetworks Technologies Ltd
Sumitomo Electric Industries Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sumitomo Wiring Systems Ltd, AutoNetworks Technologies Ltd, Sumitomo Electric Industries Ltd filed Critical Sumitomo Wiring Systems Ltd
Priority to US17/044,406 priority Critical patent/US11354112B2/en
Priority to DE112019002411.6T priority patent/DE112019002411T5/de
Priority to CN201980027538.2A priority patent/CN112020456B/zh
Publication of WO2019216330A1 publication Critical patent/WO2019216330A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F8/00—Arrangements for software engineering
    • G06F8/60—Software deployment
    • G06F8/65—Updates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
    • B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
    • B60R16/023—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for transmission of signals between vehicle parts or subsystems
    • B60R16/0231—Circuits relating to the driving or the functioning of the vehicle
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F9/00—Arrangements for program control, e.g. control units
    • G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
    • G06F9/46—Multiprogramming arrangements
    • G06F9/52—Program synchronisation; Mutual exclusion, e.g. by means of semaphores

Definitions

  • the present disclosure relates to an in-vehicle update device, an update processing method, and an update processing program for updating a program or data of an in-vehicle device mounted on a vehicle.
  • in-vehicle devices such as a plurality of ECUs (Electronic Control Units) are mounted on a vehicle, and a plurality of ECUs are connected via communication lines such as a CAN (Controller Area Network) bus to transmit and receive information to and from each other.
  • a CAN Controller Area Network
  • Each ECU reads and executes a program stored in a storage unit such as a flash memory or an EEPROM (ElectricallyrasErasable Programmable Read Only Memory) by a processing device such as a CPU (Central Processing Unit), thereby performing various control such as vehicle control Is being processed.
  • a storage unit such as a flash memory or an EEPROM (ElectricallyrasErasable Programmable Read Only Memory)
  • CPU Central Processing Unit
  • the program or data stored in the storage unit of the ECU needs to be updated to be rewritten with a new program or data, for example, when it becomes necessary to add a function, correct a defect, or upgrade a version.
  • an update program or data is transmitted to the ECU to be updated by a communication line.
  • Patent Document 1 the current version information read from all rewritable ECUs included in the network is compared with the latest version information corresponding to the current version information, and the ECU whose version information does not match is set as the target ECU.
  • a program rewriting apparatus that extracts and executes program rewriting operations continuously in the priority order stored in the order DB (database) for the extracted target ECU.
  • the program rewriting device described in Patent Document 1 is a device provided in, for example, a vehicle dealer or a maintenance factory, and is connected to a connector provided on the vehicle by wire, and then is used to update the ECU with respect to the vehicle gateway. It is the structure which transmits a program.
  • a technology in which the vehicle and the server device perform wireless communication and the server device transmits an ECU update program to the vehicle to update the ECU of the vehicle, so-called remote reprogramming technology. has been researched and developed.
  • a function for performing an update process by remote programming and a function for performing an update process by wired connection such as a program rewriting device are installed in a vehicle, there is a possibility that requests for performing both update processes may be performed simultaneously. . For example, there is a possibility that a request to perform an update process with the other function may be given while an update process with one function is being performed. Conventionally, a countermeasure for such a case has not been studied.
  • the present disclosure has been made in view of such circumstances, and an object of the present disclosure is to update a plurality of in-vehicle devices mounted on a vehicle when a plurality of update processes are given from different routes. Is to provide an in-vehicle update device, an update processing method, and an update processing program.
  • the in-vehicle update device includes a plurality of out-of-vehicle communication units that communicate with a device outside the vehicle, an in-vehicle communication unit that performs communication with a plurality of in-vehicle devices mounted on the vehicle, and storage of the in-vehicle device.
  • In-vehicle provided with an update processing unit that receives an update program for updating the program stored in the unit from the external device at the external communication unit and transmits the program to the in-vehicle device at the in-vehicle communication unit
  • An update device that uses each update program based on version information of the update program when different update programs are received from different external devices at the plurality of external communication units.
  • the execution determination unit determines that the update process can be performed on a plurality of update programs
  • the execution determination unit determines whether the update process can be performed. Performed in parallel update processing using said plurality of update program.
  • the update processing method receives an update program for updating a program stored in a storage unit of an in-vehicle device from an external device of the vehicle, and transmits the received update program to the in-vehicle device.
  • the update processing program receives an update program for updating a program stored in the storage unit of the in-vehicle device in a computer from a device outside the vehicle, and the received update program is transmitted to the in-vehicle device.
  • the present application can be realized not only as an in-vehicle update device including such a characteristic processing unit, but also as an update processing method including such a characteristic process as a step, or executing such a step on a computer. It can be realized as an update processing program. Further, it can be realized as a semiconductor integrated circuit that realizes part or all of the in-vehicle update device, or can be realized as another device or system including the in-vehicle update device.
  • the in-vehicle update device includes a plurality of in-vehicle communication units that communicate with a device outside the vehicle, an in-vehicle communication unit that performs communication with a plurality of in-vehicle devices mounted on the vehicle, and the in-vehicle device.
  • An update processing unit for receiving an update program for updating a program stored in a storage unit of the device from the external device by the external communication unit and transmitting the update program to the in-vehicle device by the in-vehicle communication unit; And when each of the plurality of external communication units receives different update programs from different external devices, each update program is used based on the version information of the update program.
  • An execution determination unit that determines whether or not the update process can be performed, and the update processing unit determines that the execution determination unit can execute the update process for a plurality of update programs. To be performed in parallel update process using the plurality of update program.
  • the in-vehicle update device that performs processing for updating the programs of a plurality of in-vehicle devices mounted on the vehicle can communicate with devices outside the vehicle through a plurality of wired or wireless communication paths.
  • the in-vehicle update device receives an update program for the in-vehicle device from an external device, and transmits the update program to the in-vehicle device through in-vehicle communication, thereby performing update processing of the program stored in the in-vehicle device.
  • the in-vehicle update device acquires version information of the update program together with the update program from an external device.
  • the in-vehicle update device determines whether or not the update process using each update program can be performed based on the version information. When it is determined that an update process using a plurality of update programs can be performed, the in-vehicle update device performs an update process using the plurality of update programs in parallel. As a result, when the in-vehicle update device receives a plurality of update programs from different external devices, it can appropriately determine whether or not the update process using each update program can be performed based on the version information. Can perform a plurality of update processes in parallel.
  • the version information includes a system version attached to an in-vehicle system including a plurality of cooperating in-vehicle devices as a group, and a device version attached individually to each in-vehicle device,
  • a storage unit that stores a correspondence relationship between the version and the device version, and the execution determination unit is configured to update the plurality of update programs when the plurality of update programs are for updating an in-vehicle device included in different in-vehicle systems. It is preferable to determine that the update process using can be performed.
  • the version information acquired from the external device together with the update program includes the system version attached to the in-vehicle system including a plurality of cooperating in-vehicle devices as a group, and the in-vehicle device. Device version attached individually.
  • the in-vehicle update device stores the correspondence between the system version and the device version. Accordingly, the in-vehicle update device can appropriately grasp the correspondence between the system version and the device version, and can appropriately determine whether or not the update process using the update program can be performed.
  • the in-vehicle update device when a plurality of update programs given from a plurality of external devices are for updating an in-vehicle device included in different in-vehicle systems, the in-vehicle update device performs an update process using the plurality of update programs in parallel. And implement. Since there is no version dependency between in-vehicle devices included in different in-vehicle systems, update processing can be performed in parallel regardless of the system version and the device version.
  • the execution determination unit determines that an update process using a plurality of update programs having the same system version can be performed.
  • the in-vehicle update device when a plurality of update programs given from a plurality of external devices are for updating an in-vehicle device included in a common in-vehicle system, the in-vehicle update device includes a plurality of update programs. Compare system versions. When the system versions of the plurality of update programs are the same, the in-vehicle update device performs update processing using the plurality of update programs in parallel. Since it is preferable that the programs executed by a plurality of in-vehicle devices included in the in-vehicle system have the same system version, the in-vehicle update device determines that an update program having the same system version can be updated in parallel. Can do.
  • the execution determination unit prioritizes the update process of one update program that has started the update process, and does not perform the update process of another update program. It is preferable to determine that it is possible.
  • the in-vehicle update device preferentially performs the update process of the update program that started the process, It is determined that the update process of the update program received later cannot be performed. As a result, it is possible to prevent the update process that has already been started from being forcibly terminated in the middle and causing a problem or the like.
  • the execution determination unit prioritizes update processing of the update program having the latest system version and cannot execute update processing of other update programs. It is preferable to determine.
  • the in-vehicle update device gives priority to the update process of the update program with the latest system version, and the like. It is determined that the update process of the update program is not executable. Thereby, the vehicle-mounted update device can update the program of the vehicle-mounted device to the latest system version.
  • the execution determination unit updates using the other update program It is preferable to determine that the processes can be performed in parallel.
  • this update program device When the version is the same as the device version corresponding to the system version determined to be able to be implemented with priority on the update process, the update process using the update program can be performed in parallel. In the exceptional case where the corresponding device versions are the same even if the system versions are different, the update processing can be performed more efficiently by determining that the in-vehicle update device can perform the update processing.
  • an update program for updating a program stored in the storage unit of the in-vehicle device is received from a device outside the vehicle, and the received update program is transmitted to the in-vehicle device.
  • An update processing method for transmitting, when different update programs are respectively received from a plurality of different external devices, the update processing using each update program is performed based on the version information of the update program.
  • the update process using the plurality of update programs is performed in parallel.
  • the update processing program receives an update program for updating a program stored in the storage unit of the in-vehicle device from a device outside the vehicle, and the received update program is stored in the computer.
  • a process for determining whether or not the update process used can be executed and performing an update process using the plurality of update programs in parallel when it is determined that the update process can be executed for a plurality of update programs. To do.
  • FIG. 1 is a schematic diagram showing a configuration of an in-vehicle update system according to the present embodiment.
  • the in-vehicle update system 100 includes a plurality of ECUs 2a to 2e mounted on the vehicle 1, one radio communication device 3, and one gateway 10.
  • Each of the ECUs 2a to 2e is connected to either the communication line 1a or 1b, and can perform communication via the connected communication line 1a or 1b.
  • two ECUs 2a and 2b are connected to the communication line 1a
  • three ECUs 2c to 2e are connected to the communication line 1b
  • the two communication lines 1a and 1b are connected to the gateway 10.
  • the gateway 10 relays communication between the communication lines 1a and 1b, whereby the plurality of ECUs 2a to 2e can perform communication via the communication lines 1a and 1b and the gateway 10.
  • the wireless communication device 3 is connected to the gateway 10 via the communication line 1c.
  • the gateway 10 can communicate with the server device 9 installed outside the vehicle 1 via the wireless communication device 3.
  • a connector 4 for connecting an external device in a wired manner is provided at an appropriate position of the vehicle 1, and the gateway 10 is connected to the connector 4 via a communication line 1d.
  • the diagnostic tool 8 is detachably connected to the connector 4 via a communication cable 8a.
  • the gateway 10 can communicate with the diagnosis tool 8 via the communication line 1d, the connector 4, and the communication cable 8a.
  • the ECUs 2a to 2e are, for example, an ECU that controls the operation of the engine of the vehicle 1, an ECU that controls the locking / unlocking of the door, an ECU that controls the turning on / off of the light, an ECU that controls the operation of the airbag, and an ABS.
  • Various ECUs such as an ECU that controls the operation of (Antilock Brake System) may be included.
  • Each of the ECUs 2a to 2e is connected to a communication line 1a or 1b arranged in the vehicle 1, and can exchange data with the other ECUs 2a to 2e and the gateway 10 via the communication lines 1a and 1b.
  • functions such as engine control, door lock control, or light control are realized by the cooperation of a plurality of ECUs 2a to 2e.
  • two ECUs 2a and 2b connected to the communication line 1a constitute an in-vehicle system 2A that realizes one function by cooperation, and the three ECUs 2c to 2e connected to the communication line 1b cooperate.
  • the vehicle-mounted system 2B which implement
  • the ECUs 2a and 2b of the in-vehicle system 2A perform the respective processes, exchange the information of the processing results by communication, and perform the respective processes based on the information obtained by the information exchange, thereby realizing a function by cooperation.
  • the in-vehicle systems 2A and 2B are provided for each of the communication lines 1a and 1b.
  • the present invention is not limited to this, and a plurality of ECUs included in one in-vehicle system are connected to different communication lines. Also good.
  • the wireless communication device 3 can communicate with the server device 9 installed outside the vehicle 1 by performing wireless communication such as a mobile phone communication network or a wireless local area network (LAN).
  • the wireless communication device 3 can relay communication between the gateway 10 and the server device 9, transmits data provided from the gateway 10 to the server device 9, and transmits data received from the server device 9 to the gateway 10. give.
  • the gateway 10 is connected to a plurality of communication lines 1a to 1d constituting the in-vehicle network of the vehicle 1, and performs a process of relaying data transmission / reception between the communication lines.
  • the gateway 10 has four communication lines 1a to 1d, that is, a first communication line 1a to which two ECUs 2a and 2b are connected, and a second communication to which three ECUs 2c to 2e are connected.
  • the line 1b, the third communication line 1c to which the wireless communication device 3 is connected, and the fourth communication line 1d connected to the connector are connected.
  • the gateway 10 relays data by transmitting data received from any one of the communication lines 1a to 1d to the other communication lines 1a to 1d.
  • the server device 9 manages and stores programs and data executed by the ECUs 2a to 2e mounted on the vehicle 1.
  • the server device 9 notifies whether or not the program or the like needs to be updated in response to an inquiry from the vehicle 1, and when the update is necessary, the server device 9 updates the program and data (hereinafter simply referred to as “update”).
  • update A program
  • the server device 9 distributes version information of the update program together with the update program.
  • the diagnostic tool 8 is an apparatus provided in a dealer of a vehicle 1 or a maintenance factory, for example, and is an apparatus for an operator to inspect a defect of the vehicle 1 or change a setting.
  • the diagnostic tool 8 is a portable device having, for example, an operation unit and a display unit. After the operator connects the communication cable 8a of the diagnostic tool 8 to the connector 4 of the vehicle 1 and undergoes an appropriate authentication process, the diagnostic tool 8 and the gateway 10 of the vehicle 1 can communicate.
  • the diagnostic tool 8 can transmit an update program for updating a program executed by the ECUs 2a to 2e mounted on the vehicle 1 to the vehicle 1.
  • the diagnostic tool 8 transmits version information of the update program together with the update program.
  • the gateway 10 periodically communicates with the server device 9 via the wireless communication device 3 to check whether the programs or data stored in the ECUs 2a to 2e are updated. Check. When there is an update, the gateway 10 acquires the update program from the server device 9 and stores it in its own memory. After the acquisition of the update program is completed, the gateway 10 updates the ECUs 2a to 2e by transmitting the update program to the ECUs 2a to 2e to be updated via the communication lines 1a and 1b. The ECUs 2a to 2e receive the update program transmitted from the gateway 10 and store it in its own memory, and after receiving all the update programs, change the program to be executed to the update program stored therein To update the program.
  • the in-vehicle update system 100 performs update processing using the update program acquired from the diagnostic tool 8 in addition to the update processing using the update program acquired from the server device 9 described above.
  • the update is performed from the diagnosis tool 8.
  • the ECU 2a to 2e can be updated.
  • the diagnostic tool 8 transmits an update program to the vehicle 1 and the gateway 10 receives the update program.
  • the subsequent update processing is the same as when the update program is acquired from the server device 9.
  • the gateway 10 acquires an update program for updating the programs of the ECUs 2a to 2e from the server device 9 using the wireless communication device 3, and the connector 4 There may be a case of obtaining from the connected diagnosis tool 8.
  • an update process using an update program received from the server device 9 is started when the user goes to the dealer for the purpose of vehicle inspection or the like, and the operator performs a diagnosis tool at the dealer before the update process is completed.
  • update processing using 8 is performed.
  • the vehicle 1 and the server device 9 may be automatically communicated to perform the update process.
  • the in-vehicle update system 100 satisfies an update process using the update program acquired from the server device 9 and an update process using the update program acquired from the diagnosis tool 8 under specific conditions. Can be implemented in parallel.
  • the in-vehicle update system 100 acquires version information of the update program when the gateway 10 acquires the update program from the server device 9 or the diagnostic tool 8.
  • the gateway 10 performs update processing using both update programs in parallel by comparing the version information of the update program acquired from the server device 9 and the version information of the update program acquired from the diagnosis tool 8. Determine whether it is possible. Further, when it is determined that the gateway 10 cannot be performed in parallel, the gateway 10 determines which update program using the update program is to be preferentially performed.
  • FIG. 2 is a block diagram showing a configuration of the gateway 10 according to the present embodiment.
  • the gateway 10 includes a processing unit (processor) 11, a storage unit (storage) 12, communication units (transceivers) 13a to 13d, and the like.
  • the processing unit 11 is configured by using an arithmetic processing device such as a CPU (Central Processing Unit) or an MPU (Micro-Processing Unit), for example, and by reading and executing the program 12a stored in the storage unit 12, various processing units 11 can be used. Perform arithmetic processing.
  • the processing unit 11 performs arithmetic processing necessary for relaying data transmission / reception between the communication lines 1a to 1d of the in-vehicle network, update processing of the ECUs 2a to 2e, and the like.
  • the storage unit 12 is configured using a non-volatile memory element such as a flash memory or an EEPROM (Electrically Erasable Programmable Read Only Memory).
  • the storage unit 12 stores various programs executed by the processing unit 11 and various data necessary for the processing of the processing unit 11.
  • the storage unit 12 stores a program 12a executed by the processing unit 11 and version correspondence information 12b as data necessary for the execution of the program 12a.
  • the program 12a may be written in the storage unit 12 at the manufacturing stage of the gateway 10, for example, and the gateway 10 may acquire, for example, what is distributed by a remote server device by communication.
  • what is recorded on the recording medium 101 such as an optical disk may be read by the gateway 10 and stored in the storage unit 12.
  • the program 12a may be provided in a form of distribution via a network, or may be provided in a form recorded on the recording medium 101.
  • the storage unit 12 stores version correspondence information 12b.
  • the version correspondence information 12b includes a system version given to each in-vehicle system 2A, 2B provided in the vehicle 1 and a device version given to each ECU 2a-2e included in the in-vehicle systems 2A, 2B.
  • FIG. 3 is a schematic diagram illustrating an example of the version correspondence information 12b of the in-vehicle system 2A.
  • the in-vehicle system 2A includes two ECUs 2a and 2b
  • the version correspondence information 12b includes the device version 1 of the ECU 2a and the device of the ECU 2b with respect to the system version 1 of the in-vehicle system 2A.
  • Version 1 is associated. Further, in the version correspondence information 12b, the system version 2 of the in-vehicle system 2A is associated with the device version 2 of the ECU 2a and the device version 1 of the ECU 2b. As for the system version and the device version, the larger the numerical value, the more the new program is used, and the latest version of the program stored in the version correspondence information 12b is applied to each ECU 2a to 2e of the vehicle 1. To do.
  • the gateway 10 acquires version information related to the update program.
  • the version information acquired by the gateway 10 together with the update program of the ECU 2a is shown in the middle part of FIG.
  • the version information acquired by the gateway 10 includes, in addition to the device version of the ECU 2a that acquired the update program, the system version of the in-vehicle system 2A that includes the ECU 2a and the device versions of other ECUs 2b that are included in the in-vehicle system 2A. Information is included.
  • the gateway 10 that acquired the version information together with the update program from the server device 9 or the diagnostic tool 8 performs update processing using the update program, and adds the acquired version information to the version correspondence information 12b of the storage unit 12.
  • Store (refer to the lower part of FIG. 3).
  • the gateway 10 acquires version information having the same contents together with the update program of the ECU 2b. However, when the contents overlap, the acquired version information may be discarded.
  • the version information acquired by the gateway 10 from the server device 9 or the diagnostic tool 8 includes the system version and the device versions of the plurality of ECUs 2a and 2b.
  • the present invention is not limited to this. A configuration that includes a system version and a device version of one ECU 2a and does not include a device version of another ECU 2b may be employed.
  • the gateway 10 includes four communication units 13a to 13d.
  • the communication units 13a to 13d are connected to any of the communication lines 1a to 1d constituting the in-vehicle network, and transmit and receive data according to a predetermined communication protocol.
  • the communication units 13a to 13d transmit and receive data based on the CAN communication standard, but the communication standard may be anything other than CAN.
  • the communication units 13a to 13d transmit information by converting the data supplied from the processing unit 11 into electrical signals and output the signals to the communication lines 1a to 1d, and also sample and acquire the potentials of the communication lines 1a to 1d As a result, the data is received, and the received data is given to the processing unit 11.
  • the four communication units 13a to 13d included in the gateway 10 may perform communication according to different communication protocols.
  • the processing unit 11 executes the program 12a stored in the storage unit 12 so that the update processing unit 11a, the version information acquisition unit 11b, the update execution determination unit 11c, the relay processing unit 11d, and the like function as software. Realized as a block.
  • the update processing unit 11a performs a process of updating the programs stored in the ECUs 2a to 2e by transmitting the update program acquired from the server device 9 or the diagnosis tool 8 to the ECUs 2a to 2e to be updated.
  • the update processing unit 11a makes an inquiry as to whether or not it is necessary to periodically update the programs of the ECUs 2a to 2e mounted on the vehicle 1 by communicating with the server device 9 using the wireless communication device 3. I do.
  • the update processing unit 11 a acquires the update program from the server device 9 and stores it in the storage unit 12. Further, the update processing unit 11 a acquires an update program from the diagnostic tool 8 and stores it in the storage unit 12 when an instruction to update the programs of the ECUs 2 a to 2 e is given from the diagnostic tool 8 connected to the connector 4. To do. Thereafter, the update processing unit 11a transmits the update program stored in the storage unit 12 to the communication line 1a or 1b to which the ECUs 2a to 2e to be updated are connected, and causes the ECUs 2a to 2e to update the program.
  • the version information acquisition unit 11b When the version information acquisition unit 11b acquires an update program from the server device 9 or the diagnosis tool 8, the version information acquisition unit 11b performs a process of acquiring version information related to the update program.
  • the version information acquisition unit 11b adds the version information acquired from the server device 9 or the diagnosis tool 8 to the version correspondence information 12b of the storage unit 12 and stores it.
  • the update execution determination unit 11c performs a process of determining whether or not the update process of the ECUs 2a to 2e using the update program acquired from the server device 9 or the diagnostic tool 8 can be performed.
  • the update execution determination unit 11c performs an update process using this update program. Is determined to be possible.
  • the update execution determination unit 11c performs both update processing in parallel based on the version correspondence information 12b stored in the storage unit 12. It is determined whether or not it is possible. Further, when it is determined that the update execution determination unit 11c cannot be performed in parallel, the update execution determination unit 11c determines which update process is to be performed with priority.
  • the relay processing unit 11d performs a process of relaying data transmission / reception between the communication lines 1a to 1d by transmitting data received on any of the communication lines 1a to 1d from the other communication lines 1a to 1d.
  • the relay processing unit 11d does not need to relay all received data, and performs processing such as determining whether or not to relay the received data and determining a data relay destination.
  • the relay processing unit 11d transmits the received data that needs to be relayed to the communication lines 1a to 1d to which the devices that require this data are connected.
  • FIG. 4 is a block diagram showing a configuration of the ECU 2a according to the present embodiment.
  • the ECU 2a includes a processing unit (processor) 21, a storage unit (storage) 22, a communication unit (transceiver) 23, and the like.
  • the processing unit 21 is configured by using an arithmetic processing device such as a CPU or MPU, for example, and performs various arithmetic processing by reading and executing the program 22a stored in the storage unit 22.
  • the content of the program 22a stored in the storage unit 22 is different for each of the ECUs 2a to 2e.
  • the storage unit 22 is configured using a nonvolatile memory element such as a flash memory or an EEPROM.
  • the storage unit 22 stores a program 22a executed by the processing unit 21 and data necessary for executing the program 22a.
  • program 22a may include program 22a and data necessary for execution of program 22a.
  • the initial program 22a may be written in the storage unit 22 at the manufacturing stage of the ECU 2a, for example, and the ECU 2a reads out and stores the program recorded in a recording medium such as a memory card or an optical disk in the storage unit 22, for example.
  • the recording device may read out what is recorded on the recording medium and write it in the storage unit 22 of the ECU 2a.
  • the ECU 2a after the ECU 2a is mounted on the vehicle 1, the ECU 2a receives the update program transmitted from the gateway 10 via the communication line 1a, and the ECU 2a stores the storage unit 22 by the received update program.
  • the program 22a is updated.
  • the storage unit 22 of the ECU 2a is provided with two areas for storing the program 22a. Each of the two areas has a sufficient storage capacity for storing the program 22a.
  • the processing unit 21 reads the program 22 a from one area of the storage unit 22 and performs processing, and the update program received from the gateway 10 is stored in the other area of the storage unit 22. After completing the reception of all the update programs from the gateway 10, the ECU 2a updates the program 22a by switching the area from which the processing unit 21 reads the program 22a.
  • the communication unit 23 is connected to the communication line 1a constituting the in-vehicle network, and performs data transmission / reception according to a CAN communication protocol, for example.
  • the communication unit 23 transmits the data by converting the data given from the processing unit 21 into an electrical signal and outputs it to the communication line 1a, and receives the data by sampling and acquiring the potential of the communication line 1a. The received data is given to the processing unit 21.
  • the processing unit 21 of the ECU 2a is provided with an update information receiving unit 21a and an update processing unit 21b.
  • the update information receiving unit 21 a and the update processing unit 21 b are functional blocks for updating the program 22 a stored in the storage unit 22.
  • the update information receiving unit 21a and the update processing unit 21b are software functional blocks realized by the processing unit 21 executing a program (not shown) that is different from the program 22a to be updated. is there.
  • the update information receiving unit 21 a receives an update program transmitted via the communication line 1 a or 1 b by the communication unit 23 and stores the received update program in an unused area of the storage unit 22. Process.
  • the update processing unit 21b After the update processing unit 21b completes storage of all the update programs in the unused area of the storage unit 22, the program 22a that is currently executing the area of the storage unit 22 where the processing unit 21 executes the program 22a. A process of switching from the stored area to the area storing the update program is performed. As a result, the processing unit 21 reads and executes the new program 22a acquired from the gateway 10 as an update program from the storage unit 22, and the update of the program 22a is completed. After completion of the update, the ECU 2a may perform data erasure processing on the area of the storage unit 22 where the previous program 22a was stored.
  • the gateway 10 is provided with update programs for the ECUs 2a to 2e from the server device 9 and the diagnostic tool 8, respectively, and a request for updating the ECUs 2a to 2e is given.
  • a request to perform update processing is given only from either the server device 9 or the diagnostic tool 8, the gateway 10 determines that the update processing according to this request can be performed, and performs this update processing. carry out.
  • the gateway 10 determines whether or not both update processing can be performed.
  • the server device 9 when a request to perform update processing is given from both the server device 9 and the diagnostic tool 8”, when a request is given simultaneously from the server device 9 and the diagnostic tool 8, the server device 9 When another request is given from the diagnosis tool 8 after the request from the diagnosis tool 8 is completed until the update processing related to this request is completed, and after the request from the diagnosis tool 8 is given, This may include a case where another request is given from the server device 9 until the update process is completed.
  • the gateway 10 determines that the update processing related to both update requests can be performed in parallel. For example, when the update program for the ECU 2a of the in-vehicle system 2A is received from the server device 9 and the update program for the ECU 2c of the in-vehicle system 2B is received from the diagnosis tool 8, the gateway 10 stores both update programs. It is determined that the update processing used can be performed in parallel, and the transmission of the update program to the ECU 2a via the communication line 1a and the transmission of the update program to the ECU 2c via the communication line 1b are performed in parallel. To do.
  • the gateway 10 includes the system version and the device version included in the version information of both update programs acquired from the server device 9 and the diagnostic tool 8, the system version of the in-vehicle systems 2A and 2B at that time, and the devices of the ECUs 2a to 2e. Compare the version. 5 to 7 are schematic diagrams for explaining whether or not the update process can be performed.
  • the update program for the ECU 2a of the in-vehicle system 2A is received from the server device 9, and the ECU 2b of the in-vehicle system 2A is received from the diagnosis tool 8. Shows an example of version information when the update program is received. 5 to 7, it is assumed that the in-vehicle system 2A is the system version 2, the ECU 2a is the device version 2, and the ECU 2b is the device version 1 before the update process is performed.
  • the example shown in FIG. 5 is a version in the case where an update program for the system version 3 and the device version 3 of the ECU 2a is given from the server device 9, and an update program for the system version 3 and the device version 2 is given from the diagnosis tool 8. Correspondence information 12b.
  • the gateway 10 performs an update process using these update programs. It is determined that it can be performed in parallel.
  • the gateway 10 transmits the update program to the ECU 2a and the update program to the ECU 2b in parallel.
  • the gateway 10 may alternately transmit the update program to both the ECUs 2a and 2b, for example, or one of the ECUs 2a and 2b, for example.
  • the update program may be transmitted to the other ECU 2a, 2b.
  • the method of performing the plurality of update processes by the gateway 10 in parallel does not necessarily have to perform the plurality of update processes simultaneously, and may perform the update processes substantially in parallel as described above.
  • Correspondence information 12b the system version of the update program of the ECU 2a is 3, whereas the system version of the update program of the ECU 2b is 4, and the two system versions do not match.
  • the gateway 10 determines that it is impossible to execute update processing using these update programs in parallel.
  • the gateway 10 determines which update program using the update program is to be executed with priority.
  • the gateway 10 preferentially implements the update program to which a request for performing update processing is given first. For example, if the gateway 10 is first given a request to update the ECU 2a from the server device 9, and then is given a request to update the ECU 2b from the diagnostic tool 8, the gateway 10 has a request to perform the updating process first.
  • the given update process of the ECU 2a is preferentially performed.
  • the gateway 10 may perform the update process of the ECU 2b, for example, or the update process of the ECU 2b is not performed, and when the request to perform the update process is given again from the diagnosis tool 8 Update processing may be performed.
  • the gateway 10 may prioritize update processing using an update program with a new system version. That is, in the example shown in FIG. 6, the gateway 10 may preferentially perform the update process of the ECU 2b because the update program of the ECU 2b has a newer system version. Note that the gateway 10 may interrupt the update process of the ECU 2a and perform the update process of the ECU 2b, for example, when a request to perform the update process of the ECU 2b is given after the update process of the ECU 2a is started.
  • the gateway 10 may be determined in advance which of the server device 9 and the diagnostic tool 8 is given priority. For example, the gateway 10 may be determined in advance to implement an update request from the diagnosis tool 8 with priority. In this case, the gateway 10 preferentially performs the update process of the ECU 2b in the example shown in FIG. The gateway 10 may be determined to prioritize the update process from the server device 9.
  • the example shown in FIG. 7 is a version in the case where an update program for the system version 3 and the device version 3 of the ECU 2a is given from the server device 9, and an update program for the system version 4 and the device version 3 is given from the diagnosis tool 8. Correspondence information 12b.
  • the device version of the ECU 2a corresponding to the system version 4 is 3, and the system versions 3 and 4 have the same device version of the ECU 2a.
  • the gateway 10 determines that the update processing using these update programs can be performed in parallel. That is, even if the system version of the update program of the ECU 2a and the system version of the update program of the ECU 2b do not match, the gateway 10 updates the device version included in both system versions if they match.
  • the gateway 10 compares the system version of the update program of the ECU 2a with the system version of the update program of the ECU 2b, the gateway 10 compares the system version of the update program of the ECU 2a as 3 or 4, and If one matches the system version of the update program of the ECU 2b, it may be determined that the update process can be performed in parallel.
  • FIG. 8 is a flowchart showing a procedure of update processing performed by the gateway 10 according to the present embodiment.
  • the update processing unit 11a of the processing unit 11 of the gateway 10 according to the present embodiment determines whether an update request has been received from either the server device 9 or the diagnostic tool 8 (step S1). Note that the update processing unit 11a periodically inquires the server device 9 about whether or not the ECUs 2a to 2e are updated by the wireless communication device 3, and when a response with an update is obtained in response to this inquiry, the server device It is determined that the update request from 9 has been received.
  • the update processing unit 11a receives an update request from the diagnostic tool 8 when the diagnostic tool 8 is connected to the connector 4 of the vehicle 1 and an instruction to update the ECUs 2a to 2e is given from the diagnostic tool 8. Judge. When the update request from the server apparatus 9 or the diagnostic tool 8 is not received together (S1: NO), the update processing unit 11a waits until an update request is received from either the server apparatus 9 or the diagnostic tool 8. .
  • the update processing unit 11a receives the update program transmitted from the server device 9 or the diagnostic tool 8 that is the transmission source of the update request.
  • an update program used for the update process is acquired (step S2).
  • the version information acquisition unit 11b of the processing unit 11 acquires version information related to the update program from the server device 9 or the diagnostic tool 8 that has transmitted the update program (step S3), and the version of the storage unit 12 In addition to the correspondence information 12b, it is stored.
  • the update processing unit 11a transmits the update program acquired in step S2 to the ECUs 2a to 2e to be updated through the communication units 13a and 13b (step S4).
  • the update processing unit 11a determines whether or not an update request has been received from the server device 9 or the diagnosis tool 8 that has received the update request in step S1 and the other one (step S5).
  • the update processing unit 11a advances the process to step S7.
  • the update processing unit 11a starts a parallel update process in which a plurality of update processes are performed in parallel (step S6), and the process proceeds to step S7.
  • the processing unit 11 performs the parallel update process in step S6 in parallel with the process of this flowchart.
  • the update processing unit 11a determines whether or not the transmission of the update program to the ECUs 2a to 2e that deal with the update has been completed (step S7).
  • the update processing unit 11a returns the process to step S4 and continues to transmit the update program.
  • the update processing unit 11a ends the update process related to the update request received in step S1.
  • FIG. 9 is a flowchart showing the procedure of the update process performed by the gateway 10 according to the present embodiment, and shows the details of the parallel update process started in step S6 of the flowchart shown in FIG.
  • the update processing unit 11a that has started the parallel update process in step S6 acquires an update program from the server device 9 or the diagnostic tool 8 that is the transmission source of the update request received in step S5 (step S11).
  • the version information acquisition unit 11b acquires version information related to the update program from the server device 9 or the diagnostic tool 8 that has transmitted the update program (step S12), and stores the version information in the version correspondence information 12b of the storage unit 12. Add and remember.
  • the update execution determination unit 11c of the processing unit 11 uses the in-vehicle systems 2A and 2B targeted by the update process already performed (update process shown in FIG. 8) and the update program acquired in step S11.
  • the in-vehicle systems 2A and 2B targeted by the update process are compared, and it is determined whether or not both in-vehicle systems 2A and 2B match (step S13). If the in-vehicle systems 2A and 2B do not match (S13: NO), the update execution determination unit 11c determines that the update process using the update program acquired in step S11 can be performed (step S17).
  • the update execution determination unit 11c is used for the update processing that has already been performed based on the version correspondence information 12b stored in the storage unit 12.
  • the system version of the update program is compared with the system version of the update program acquired in step S11, and it is determined whether or not both system versions match (step S14). If the two system versions match (S14: YES), the update execution determination unit 11c determines that the update process using the update program acquired in step S11 can be performed (step S17).
  • the update execution determination unit 11c is based on the version correspondence information 12b stored in the storage unit 12 and is used for the update process that has already been performed.
  • the apparatus version of the update program acquired in step S11 corresponding to the system version of the program is compared with the apparatus version of the update program acquired in step S11, and it is determined whether or not both apparatus versions match (Ste S15).
  • the update execution determination unit 11c determines that the update process using the update program acquired in step S11 can be performed (step S17).
  • the update execution determination unit 11c determines that the update process using the update program acquired in step S11 cannot be performed (step S16).
  • the update process that has been started first is given priority, and the update processing unit 11a performs the update process in parallel.
  • the update processing unit 11a may be configured to preferentially perform update processing using an update program with a new system version when it is determined that update processing cannot be executed in parallel.
  • the update processing unit 11a may compare the system version after step S16 to determine which is the new update program, and perform update processing using the update program with the new system version. .
  • the update processing unit 11a After determining in step S17 that the update processing can be performed in parallel, the update processing unit 11a transmits the update program acquired in step S11 to the ECUs 2a to 2e to be updated in the communication units 13a and 13b. Transmit (step S18).
  • the update processing unit 11a determines whether or not the transmission of the update program to the ECUs 2a to 2e that deal with the update has been completed (step S19). When the transmission of the update program is not completed (S19: NO), the update processing unit 11a returns the process to step S18 and continues to transmit the update program.
  • the update processing unit 11a ends the update process using the update program acquired in step S11.
  • FIG. 10 is a flowchart showing a procedure of update processing performed by the gateway 10 according to the present embodiment, and is processing performed after the processing of FIGS. 8 and 9.
  • the update processing unit 11a of the gateway 10 according to the present embodiment determines whether or not transmission of all update programs related to the update request given from the server device 9 or the diagnostic tool 8 to the ECUs 2a to 2e has been completed. (Step S31). If transmission of all update programs has not been completed (S31: NO), the update processing unit 11a continues to transmit update programs until transmission of all update programs is completed.
  • the update processing unit 11a When the transmission of all the update programs is completed (S31: YES), the update processing unit 11a is updated based on the version correspondence information 12b stored in the storage unit 12 and the current versions of the ECUs 2a to 2e. It is determined whether or not the system version of the in-vehicle systems 2A and 2B and the device versions of the ECUs 2a to 2e included in the in-vehicle systems 2A and 2B have an appropriate correspondence (step S32). When the correspondence between the system version and the device version is appropriate (S32: YES), the update processing unit 11a applies the update program to the ECUs 2a to 2e included in the in-vehicle systems 2A and 2B that have performed the update process.
  • step S33 an update command for performing the update process for each piece is transmitted (step S33), and the process ends.
  • the update processing unit 11a ends the process without transmitting an update command in order to wait for the further update process to be performed.
  • FIG. 11 is a flowchart showing a procedure of update processing performed by the ECUs 2a to 2e according to the present embodiment.
  • the update information receiving unit 21a of the processing unit 21 of the ECUs 2a to 2e according to the present embodiment receives the update program transmitted from the gateway 10 by the communication unit 23 (step S41), and updates it in the storage unit 22. Memorize the program.
  • the update information receiving unit 21a determines whether or not reception of all the update programs has been completed (step S42). When the reception of the update program has not been completed (S42: NO), the update information receiving unit 21a returns the process to step S41, and continues to receive the update program.
  • the update processing unit 21b of the processing unit 21 determines whether or not an update command transmitted from the gateway 10 has been received (step S43). When the update command has not been received (S43: NO), the update processing unit 21b waits until the update command is received. When an update command is received (S43: YES), the update processing unit 21b performs a process of switching the program 22a executed by the processing unit 21 from the currently executing program 22a to the update program received from the gateway 10 ( Step S44) and the updating process is terminated.
  • the gateway 10 performs a process of updating the programs 22a of the plurality of ECUs 2a to 2e mounted on the vehicle 1.
  • the gateway 10 can communicate with devices outside the vehicle 1 such as the server device 9 and the diagnostic tool 8 through a plurality of communication paths of wireless communication using the wireless communication device 3 and wired communication via the connector 4. .
  • the gateway 10 receives the update program for the ECUs 2a to 2e from the server device 9 or the diagnostic tool 8, and transmits the update program to the ECUs 2a to 2e by in-vehicle communication, whereby the ECUs 2a to 2e store the update program in the storage unit 22.
  • the update process of the program 22a is performed.
  • the gateway 10 acquires version information from the server device 9 or the diagnostic tool 8 together with the update program. When different update programs are received from the server device 9 and the diagnostic tool 8, the gateway 10 determines whether or not update processing using each update program can be performed based on the version information. When it is determined that the update process using the plurality of update programs can be performed, the gateway 10 performs the update process using the plurality of update programs in parallel.
  • the gateway 10 when the gateway 10 receives a plurality of update programs from different external devices, the gateway 10 can appropriately determine whether or not the update process using each update program can be performed based on the version information. A plurality of update processes can be performed in parallel.
  • the version information acquired by the gateway 10 from the server device 9 or the diagnostic tool 8 together with the update program includes an in-vehicle system 2A in which a plurality of cooperating ECUs 2a to 2e are grouped. , 2B, and system versions individually attached to the ECUs 2a to 2e.
  • the gateway 10 stores the correspondence relationship between the system version and the device version in the storage unit 12 as version correspondence information 12b. Accordingly, the gateway 10 can appropriately grasp the correspondence between the system version and the device version, and can appropriately determine whether or not the update process using the update program can be performed.
  • the gateway 10 when the gateway 10 according to the present embodiment is for updating ECUs 2a to 2e included in different in-vehicle systems 2A and 2B, a plurality of update programs given from the server device 9 and the diagnosis tool 8 are used. Update processing using a plurality of update programs is performed in parallel. Since there is no version dependency between the ECUs 2a to 2e included in the different in-vehicle systems 2A and 2B, update processing can be performed in parallel regardless of the system version and the device version.
  • the gateway 10 when a plurality of update programs given from the server device 9 and the diagnostic tool 8 are for updating the ECUs 2a to 2e included in the common in-vehicle systems 2A and 2B, Compare the system versions of multiple update programs. When the system versions of the plurality of update programs are the same, the gateway 10 performs update processing using the plurality of update programs in parallel. Since it is preferable that the programs 22a executed by the plurality of ECUs 2a to 2e included in the common in-vehicle systems 2A and 2B have the same system version, the gateway 10 performs the update process in parallel for the update program having the same system version. It can be determined that implementation is possible.
  • the gateway 10 gives priority to the update process of the update program started first when the system versions of the plurality of update programs given from the server device 9 and the diagnosis tool 8 are different. It is determined that the update process for the update program received later cannot be performed. As a result, the gateway 10 can prevent the update process that has already been started from being forcibly terminated in the middle and causing a malfunction.
  • the gateway 10 gives priority to the update processing of the update program with the latest system version when the system versions of the plurality of update programs given from the server device 9 and the diagnosis tool 8 are different. It may be determined that the update process of another update program cannot be performed. Thereby, the gateway 10 can update the program 22a of the ECUs 2a to 2e to the latest system version.
  • the gateway 10 is different in that the system versions of the plurality of update programs given from the server device 9 and the diagnosis tool 8 are different, and the update that should be determined to be impossible to execute the update process in parallel. Even if the program version is the same as the system version corresponding to the system version of the update program that is determined to prioritize the update process, the update program is The used update process can be executed in parallel. For exceptional cases where the corresponding device versions are the same even if the system versions are different, it is possible to perform the update process more efficiently by determining that the gateway 10 can execute the update process in parallel. Become.
  • the target device for updating the program or data is the ECUs 2a to 2e.
  • the present invention is not limited to this, and the program or data is updated for various in-vehicle devices other than the ECUs 2a to 2e. It may be a configuration.
  • the gateway 10 is the device that performs the update processing of the ECUs 2a to 2e.
  • the present invention is not limited to this.
  • any one of the ECUs 2a to 2e acquires update data of the other ECUs 2a to 2e.
  • the transmission may be configured, and various devices other than the gateway 10 and the ECUs 2a to 2e may perform the update process.
  • the apparatus which transmits the program for an update to the vehicle 1 was made into the server apparatus 9 and the diagnosis tool 8, it is not restricted to this, Other apparatuses transmit the program for an update to the vehicle 1 by wired or wireless communication. It is good as composition.
  • the gateway 10 is configured to communicate with the server device 9 using the wireless communication device 3, but the present invention is not limited to this, and the gateway 10 may be configured to have a wireless communication function.
  • the gateway 10 is configured to perform wired communication with the diagnostic tool 8 via the connector 4, but is not limited thereto, and performs wireless communication such as wireless LAN (Local Area Network) or Bluetooth (registered trademark). It is good also as a structure.
  • update processing in the present embodiment may include not only updating the program executed by the ECUs 2a to 2e, but also processing for updating data used for processing performed by executing the program, and the program code ( A process of updating only the data without updating the instruction) may also be included.
  • the “update program” may be any one that includes only the code of the program to be updated, one that includes both the program code and data, and one that includes only the data without including the program code.
  • Each device in the in-vehicle update system includes a computer including a microprocessor, a ROM, a RAM, and the like.
  • An arithmetic processing unit such as a microprocessor reads and executes a computer program including a part or all of each step of a sequence diagram or flowchart as shown in FIGS. 8 to 11 from a storage unit such as a ROM or a RAM.
  • Each of the computer programs of the plurality of apparatuses can be installed from an external server apparatus or the like.
  • the computer programs of the plurality of devices are distributed in a state where they are stored in a recording medium such as a CD-ROM, a DVD-ROM, or a semiconductor memory.

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