WO2020208954A1 - Ordinateur embarqué, système de communication embarqué, procédé d'exécution d'ordinateur, et programme informatique - Google Patents

Ordinateur embarqué, système de communication embarqué, procédé d'exécution d'ordinateur, et programme informatique Download PDF

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WO2020208954A1
WO2020208954A1 PCT/JP2020/007111 JP2020007111W WO2020208954A1 WO 2020208954 A1 WO2020208954 A1 WO 2020208954A1 JP 2020007111 W JP2020007111 W JP 2020007111W WO 2020208954 A1 WO2020208954 A1 WO 2020208954A1
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Prior art keywords
vehicle
virtual
control device
computer
physical resources
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PCT/JP2020/007111
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English (en)
Japanese (ja)
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ダルマワン 呉
賢太 小方
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株式会社オートネットワーク技術研究所
住友電装株式会社
住友電気工業株式会社
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Publication of WO2020208954A1 publication Critical patent/WO2020208954A1/fr

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR 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
    • G06F9/44—Arrangements for executing specific programs
    • G06F9/455—Emulation; Interpretation; Software simulation, e.g. virtualisation or emulation of application or operating system execution engines
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR 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
    • G06F9/50—Allocation of resources, e.g. of the central processing unit [CPU]

Definitions

  • This disclosure relates to an in-vehicle computer, an in-vehicle communication system, a computer execution method, and a computer program.
  • This application claims priority based on Japanese Application No. 2019-074323 filed on April 9, 2019, and incorporates all the contents described in the Japanese application.
  • the vehicle is equipped with a plurality of electronic control units (ECUs: Electronic Control Units, hereinafter referred to as ECUs) connected to an in-vehicle network.
  • ECUs Electronic Control Units
  • a plurality of ECUs are grouped by domain such as a power train system, a body system, and an air conditioning system, and are connected to a central gateway.
  • OTA Over The Air
  • ADAS advanced driver-assistance systems
  • autonomous driving technology artificial intelligence technology, etc.
  • the network is becoming complicated, and it is becoming difficult to efficiently use the physical resources of the ECU.
  • Patent Document 1 discloses an in-vehicle device capable of operating a physical processor in parallel as a plurality of virtual processor cores and operating a plurality of functional processing units independently by a virtualization technique using a Hypervisor or the like. There is.
  • the in-vehicle device according to Patent Document 1 includes a functional domain for executing an application and a backup processing domain for writing backup data of the application from a volatile memory to a non-volatile memory, and each domain operates independently.
  • the in-vehicle computer is an in-vehicle computer, and allocates physical resources including a communication unit, a control unit, and a storage unit that communicate with an in-vehicle control device via an in-vehicle communication line, and the physical resources to provide a virtual control device.
  • the virtual control device includes a management processing unit to generate, and operates as a virtual vehicle-mounted control device connected to the vehicle-mounted communication line, which controls the operation of a terminal device connected to the vehicle-mounted control device.
  • the in-vehicle communication system is an in-vehicle communication system including an in-vehicle computer and a plurality of in-vehicle control devices connected to the in-vehicle computer via an in-vehicle communication line.
  • the virtual control device includes a physical resource including a communication unit, a control unit, and a storage unit that communicate with the vehicle-mounted control device, and a management processing unit that allocates the physical resource to generate a virtual control device. It operates as a virtual in-vehicle control device connected to the in-vehicle communication line that controls the operation of the terminal device connected to the device.
  • an in-vehicle computer having physical resources including a communication unit, a control unit, and a storage unit that communicates with the in-vehicle control device via an in-vehicle communication line allocates the physical resources to the virtual control device.
  • the virtual control device is operated as a virtual vehicle-mounted control device connected to the vehicle-mounted communication line that controls the operation of the terminal device connected to the vehicle-mounted control device.
  • the computer program allocates the physical resources to an in-vehicle computer including a communication unit, a control unit, and a storage unit that communicates with the in-vehicle control device via an in-vehicle communication line, and allocates the physical resources to the virtual control device.
  • the present application can be realized not only as a management processing unit provided with such a characteristic processing unit, but also as a management processing method in which the characteristic processing is a step as described above, or such a step.
  • it can be realized as a semiconductor integrated circuit that realizes a part or all of the management processing unit, or can be realized as another system including the management processing unit.
  • FIG. 1 is a block diagram showing a configuration example of an in-vehicle communication system.
  • FIG. 2 is a block diagram showing a network configuration of an in-vehicle communication system.
  • FIG. 3 is a functional block diagram of the in-vehicle computer.
  • FIG. 4 is a flowchart showing a management processing procedure of the virtual management ECU.
  • FIG. 5 is an explanatory diagram showing a dynamic allocation process of physical resources.
  • FIG. 6 is a functional block diagram showing a physical resource redistribution process.
  • An object of the present disclosure is to provide an in-vehicle computer with physical resources necessary for operating a terminal device in an in-vehicle communication system including an in-vehicle computer, a plurality of in-vehicle control devices, and a terminal device connected to the in-vehicle control device.
  • An object of the present invention is to provide an in-vehicle computer, an in-vehicle communication system, a computer execution method, and a computer program that can efficiently utilize the physical resources of the entire in-vehicle communication system by providing and managing the in-vehicle communication system.
  • the in-vehicle computer provides physical resources necessary for operating the terminal device.
  • the in-vehicle computer By providing and managing, it becomes possible to provide an in-vehicle computer, an in-vehicle communication system, a computer execution method, and a computer program that can efficiently use the physical resources of the entire in-vehicle communication system.
  • the in-vehicle computer is an in-vehicle computer, and is virtual by allocating physical resources including a communication unit, a control unit, and a storage unit that communicate with an in-vehicle control device via an in-vehicle communication line, and the physical resources.
  • the virtual control device includes a management processing unit that generates a control device, and the virtual control device operates as a virtual vehicle-mounted control device connected to the vehicle-mounted communication line that controls the operation of a terminal device connected to the vehicle-mounted control device. To do.
  • the management processing unit can generate a virtual control device that controls the operation of the terminal device by allocating the physical resources of the in-vehicle computer.
  • the virtual control device replaces the terminal device and operates as a virtual in-vehicle control device connected to the in-vehicle communication line.
  • the in-vehicle control device to which the terminal device is connected does not need to have the physical resources necessary for the operation of the terminal device. Therefore, when many in-vehicle control devices are connected to the in-vehicle communication system, the physical resources required for each in-vehicle control device can be reduced.
  • the terminal device is not limited to the computer device, but includes any device and device that can affect the operation of the in-vehicle computer, other in-vehicle control devices connected to the in-vehicle communication line, and the like.
  • terminal equipment includes equipment including actuators, equipment including sensors, image display equipment, audio equipment, communication equipment, failure diagnosis equipment, and the like.
  • the management processing unit receives information indicating the usage state of the terminal device from the vehicle-mounted control device via the vehicle-mounted communication line, and the terminal device is used based on the received information.
  • a configuration for generating the virtual control device is preferable.
  • the physical resources of the in-vehicle computer can be efficiently used by generating the virtual ECU related to the terminal device only when the terminal device is used.
  • the management processing unit preferably has a configuration in which the virtual control device is extinguished when it is determined that the terminal device is not in use.
  • the virtual ECU related to the terminal device when the terminal device is not used, the virtual ECU is extinguished and the physical resources are released, so that the in-vehicle computer is more efficiently used. Physical resources can be used.
  • the management processing unit causes the one virtual control device to become the one when the one virtual control device is extinguished. It is preferable to distribute the allocated physical resources to the other plurality of virtual control devices.
  • the management processing unit When the management processing unit generates a plurality of the virtual control devices corresponding to the plurality of terminal devices, the management processing unit allocates the virtual control devices to the plurality of virtual control devices according to the usage status of the plurality of terminal devices. A configuration in which the allocation amount of physical resources is changed is preferable.
  • the physical resources required for the operation are dynamically allocated according to the usage status of the plurality of terminal devices, so that the in-vehicle computer can be more efficiently used. Physical resources can be used.
  • the physical resource whose allocation amount is changed includes the resource of the communication unit.
  • the physical resources related to the communication unit can be dynamically allocated to the virtual control devices of the plurality of terminal devices, and the physical resources of the communication unit of the in-vehicle computer can be efficiently used. ..
  • the in-vehicle communication system is an in-vehicle communication system including an in-vehicle computer and a plurality of in-vehicle control devices connected to the in-vehicle computer via an in-vehicle communication line, and the in-vehicle computer is the in-vehicle computer.
  • the virtual control device includes a physical resource including a communication unit, a control unit, and a storage unit that communicates with the vehicle-mounted control device via a communication line, and a management processing unit that allocates the physical resource to generate a virtual control device. It operates as a virtual in-vehicle control device connected to the in-vehicle communication line, which controls the operation of the terminal device connected to the in-vehicle control device.
  • the physical resources of the entire in-vehicle communication system can be efficiently used by providing and managing the physical resources necessary for operating the terminal device by the in-vehicle computer. ..
  • an in-vehicle computer having physical resources including a communication unit, a control unit, and a storage unit that communicate with an in-vehicle control device via an in-vehicle communication line allocates the physical resources.
  • a virtual control device is generated, and the virtual control device is operated as a virtual vehicle-mounted control device connected to the vehicle-mounted communication line that controls the operation of a terminal device connected to the vehicle-mounted control device.
  • the physical resources of the entire in-vehicle communication system can be efficiently used by providing and managing the physical resources necessary for operating the terminal device by the in-vehicle computer. ..
  • the computer program according to this embodiment allocates the physical resources to an in-vehicle computer including a communication unit, a control unit, and a storage unit that communicates with the in-vehicle control device via an in-vehicle communication line, and virtualizes the physical resources.
  • a control device is generated, and the virtual control device is operated as a virtual vehicle-mounted control device connected to the vehicle-mounted communication line that controls the operation of the terminal device connected to the vehicle-mounted control device.
  • the physical resources of the entire in-vehicle communication system can be efficiently used by providing and managing the physical resources necessary for operating the terminal device by the in-vehicle computer. ..
  • FIG. 1 is a block diagram showing a configuration example of an in-vehicle communication system
  • FIG. 2 is a block diagram showing a network configuration of the in-vehicle communication system
  • FIG. 3 is a functional block diagram of the in-vehicle computer 1.
  • the in-vehicle communication system includes an in-vehicle computer 1, a plurality of area ECUs 2, a terminal device 3 connected to the area ECU 2, a plurality of ECUs 4, an external communication device 5, and a display device 6. ..
  • the plurality of area ECUs 2 and 4 are connected to the vehicle-mounted computer 1 by the first vehicle-mounted communication line 121 and the second vehicle-mounted communication line 122, respectively.
  • the external communication device 5 and the display device 6 are connected to the input / output I / F 13 of the in-vehicle computer 1.
  • the in-vehicle computer 1 includes a control unit 10, a storage unit 11, a communication unit 12, and an input / output I / F 13.
  • the in-vehicle computer 1 is also referred to as a central ECU.
  • the communication unit 12 includes one or more Ethernet (Ethernet / registered trademark) communication units 12a and one or more CAN (Control Area Network) communication units 12b. In this embodiment, an example in which both the Ethernet communication unit 12a and the CAN communication unit 12b are provided will be described, but the configuration may include only the Ethernet communication unit 12a.
  • the storage unit 11 includes a volatile memory element such as a RAM (RandomAccessMemory) and a non-volatile memory element such as a flash memory or an EEPROM (ElectricallyErasableProgrammableReadOnlyMemory).
  • the storage unit 11 stores the virtualized operating system (virtualized OS) 11a, the computer program (computer PG) 11b according to the present embodiment, the guest OS 11c, the dedicated program 11d, and other various data necessary for the operation of the control unit 10. .. Further, the storage unit 11 stores the identification information of the terminal device 3 and a table showing the correspondence relationship between the guest OS 11c suitable for operating the terminal device 3 as the virtual ECU 102 and the dedicated program 11d.
  • the virtualization operating system 11a is, for example, a Hypervisor.
  • the virtualization operating system 11a has a function of constructing a plurality of virtual environments in which the virtual ECU 102 can operate on the virtualization operating system 11a.
  • the virtual environment includes a virtual control unit, a virtual storage unit, a virtual Ethernet communication unit, a virtual CAN communication unit (blank block in FIG. 3), etc., which are allocated physical resources including a control unit 10, a storage unit 11, a communication unit 12, and the like. including.
  • the virtual ECU 102 operates like the actual physical area ECU 2 or ECU 4.
  • the virtual ECU 102 can communicate with other area ECUs 2 and ECU 4 as the area ECU 2 connected to the first vehicle-mounted communication line 121 or the ECU 4 connected to the second vehicle-mounted communication line 122. Further, it is assumed that the virtual management ECU 101 for managing the generation, operation, and disappearance of one or a plurality of virtual ECUs 102 is generated in the virtualization operating system 11a.
  • the virtual management ECU 101 is constantly operating on the virtualized operating system 11a.
  • the virtual management ECU 101 can generate and eliminate another virtual ECU 102 by using the virtualization operating system 11a.
  • the virtual management ECU 101 is assigned a virtual storage unit 11 that stores a guest OS 11c for generating the virtual ECU 102 and a dedicated program 11d, and can access the program or the like.
  • the virtual ECU 102 is a device for controlling the operation of the terminal device 3, and operates as a virtual vehicle-mounted control device connected to the first vehicle-mounted communication line 121 or the second vehicle-mounted communication line 122.
  • the virtual ECU 102 is a device that operates in place of the terminal device 3.
  • the virtual management ECU 101 can monitor the operating state of each virtual ECU 102 through the virtualization operating system 11a.
  • the virtual management ECU 101 can communicate with the area ECU 2 through the virtualization operating system 11a and monitor the usage state of the terminal device 3 connected to the area ECU 2. Furthermore, it is assumed that the virtual management ECU 101 can also access the external server A via the external communication device 5.
  • the computer program 11b is a device for controlling the operation of the terminal device 3 when the terminal device 3 provided in the area ECU 2 is used, and is connected to the first vehicle-mounted communication line 121 or the second vehicle-mounted communication line 122.
  • This is a program for managing the virtual ECU 102, such as generating and extinguishing the virtual ECU 102 that operates as a connected virtual vehicle-mounted control device.
  • the computer program 11b is executed by, for example, the virtual management ECU 101.
  • the guest OS 11c is an OS for operating the virtual ECU 102.
  • the guest OS 11c is installed in a virtual ECU 102 having virtual hardware and functions as a basic OS of the virtual ECU 102.
  • Guest OS 11c is, for example, Autosar, Linux (registered trademark), Android (registered trademark), QNX (registered trademark), Ubuntu (registered trademark) and the like.
  • the dedicated program 11d is a device for controlling the operation of the terminal device 3, and is installed in the virtual ECU 102 that operates as a virtual vehicle-mounted control device connected to the first vehicle-mounted communication line 121 or the second vehicle-mounted communication line 122. It is a program that works.
  • the dedicated program 11d is a dedicated program for operating a specific terminal device 3 connected to the in-vehicle computer 1.
  • the various programs may be written in the storage unit 11 at the manufacturing stage of the in-vehicle computer 1.
  • the in-vehicle computer 1 may acquire what is distributed by an external server device (not shown) or the like by communication.
  • the vehicle-mounted computer 1 may read out what has been recorded on a recording medium such as a memory card or an optical disk and store it in the storage unit 11.
  • the writing device may read what has been recorded on the recording medium and write it in the storage unit 11 of the in-vehicle computer 1.
  • the various programs may be provided in the form of distribution via a network.
  • the various programs may be provided in the form recorded on a recording medium.
  • the control unit 10 is configured by using an arithmetic processing unit such as a CPU (Central Processing Unit) or an MPU (Micro-Processing Unit), and reads out a virtualized operating system 11a, a computer program 11b, etc. stored in the storage unit 11. By executing the above, various arithmetic processes are performed. Further, the control unit 10 has a timer for measuring an arbitrary elapsed time.
  • an arithmetic processing unit such as a CPU (Central Processing Unit) or an MPU (Micro-Processing Unit)
  • the Ethernet communication unit 12a is an Ethernet PHY unit that communicates in accordance with a communication protocol such as 100BASE-T1 or 1000BASE-T1.
  • a plurality of area ECUs 2 are connected to the Ethernet communication unit 12a via a first vehicle-mounted communication line 121 that conforms to the above communication protocol.
  • the area ECU 2 is an electronic control unit that controls the operation of the terminal device 3 provided in a specific area such as front right, front left, rear right, rear left, etc. of the vehicle C.
  • the terminal device 3 is various sensors such as an in-vehicle camera that images the outside of the vehicle, a LIDAR (Light Detection And Ranging), and an in-vehicle camera.
  • LIDAR Light Detection And Ranging
  • the terminal device 3 may be an audio device that outputs entertainment-type images and sounds. Further, the terminal device 3 may be an electronic control unit.
  • the area ECU 2 monitors the usage state of the terminal device 3 and whether or not it is in the used state, and transmits information indicating the usage state of the terminal device 3 to the vehicle-mounted computer 1 or the virtual management ECU 101 to the first vehicle-mounted communication line. It is transmitted via 121.
  • the area ECU 2 recognizes whether or not the terminal device 3 is in a state of being used by detecting, for example, the output of a seating sensor that detects the presence or absence of an occupant, the power button of the terminal device 3, the operating state of the touch pal, and the like. can do.
  • the operations of the terminal device 3 and various arithmetic processes can be configured to be executed on the in-vehicle computer 1.
  • the area ECU 2 is configured so that the minimum operation of the own device and the terminal device 3 can be controlled when the in-vehicle computer 1 stops abnormally. ..
  • the CAN communication unit 12b is a CAN transceiver that communicates in accordance with the CAN communication protocol.
  • a plurality of ECUs 4 are connected to the CAN communication unit 12b via a second vehicle-mounted communication line 122 that conforms to the CAN communication protocol.
  • the plurality of ECUs 4 are connected to the corresponding CAN communication units 12b for each of the plurality of functional domains.
  • the plurality of functional domains include, for example, a cognitive system domain, a judgment system domain, an operation system domain, and the like.
  • the in-vehicle computer 1 functions as a relay device that relays data transmitted and received by the ECU 4 connected to each CAN communication unit 12b.
  • the ECU 4 belonging to the cognitive domain is connected to, for example, a sensor such as an in-vehicle camera, LIDAR, an ultrasonic sensor, or a millimeter wave sensor.
  • the ECU 4 digitally converts the output value output from the sensor, for example, and transmits the output value to the ECU 4 of the determination system domain via the second in-vehicle communication line.
  • the ECU 4 belonging to the determination system domain receives, for example, the data transmitted from the ECU 4 belonging to the cognitive system domain. Based on the received data, the ECU 4 of the determination system domain generates data for demonstrating the automatic driving function of the vehicle C, or performs a process of processing the data.
  • the ECU 4 of the determination system domain transmits the generated data or the like to the ECU 4 of the operation system domain via the second in-vehicle communication line.
  • the ECU 4 belonging to the domain of the operation system is connected to, for example, an actuator such as a motor, an engine or a brake.
  • the ECU 4 of the operation system domain receives the data transmitted from the ECU 4 of the judgment system domain, controls the operation of the actuator based on the received data, and performs operations such as running, stopping, or steering the vehicle C. Demonstrate automatic driving function.
  • the ECU 4 connected to the CAN communication unit 12b executes processing related to recognition, judgment, and operation has been described, but it is configured to execute such operation in cooperation with the area ECU 2 and the in-vehicle computer 1. You may. In particular, it is desirable that the processing requiring large-capacity data communication be executed on the area ECU 2 side. Further, high-load arithmetic processing such as arithmetic processing related to artificial intelligence may be configured to be executed on the in-vehicle computer 1 side.
  • the input / output I / F 13 is an interface for communicating with the external communication device 5, the display device 6, and the like.
  • the external communication device 5 and the display device 6 are connected to the input / output I / F 13 via a wire harness such as a serial cable.
  • the out-of-vehicle communication device 5 is a communication device provided with an antenna 50 for performing wireless communication and performing wireless communication through an internet communication network such as WiFi and a mobile communication network such as 3G, LTE, 4G, and 5G.
  • the out-of-vehicle communication device 5 is, for example, a telematics control unit (TCU).
  • TCU telematics control unit
  • the out-of-vehicle communication device 5 transmits / receives data to / from the external server A, for example.
  • the external server A stores a dedicated program 11d required for operating the terminal device 3 as the virtual ECU 102.
  • the external communication device 5 requests the external server A to deliver the necessary dedicated program 11d, and the external server A wirelessly transmits the dedicated program 11d to the in-vehicle computer 1 in response to the request.
  • the in-vehicle computer 1 can acquire the dedicated program 11d by the external communication device 5.
  • vehicle-mounted communication device 5 and the vehicle-mounted computer 1 are separate bodies, the vehicle-mounted computer 1 may be configured to have the configuration or function of the vehicle-mounted communication device 5.
  • the external server A may be an OTA server.
  • the external server A transmits a program for the in-vehicle computer 1, the area ECU 2, the ECU 4, and the like, a guest OS 11c for the virtual ECU 102, and an update program for updating the dedicated program 11d.
  • the in-vehicle computer 1 receives the update program transmitted from the external server A.
  • the in-vehicle computer 1 updates various programs of the in-vehicle computer 1, the area ECU 2, the ECU 4, and the virtual ECU 102, which are its own devices, by using the received update program.
  • the display device 6 is an HMI (Human Machine Interface) device such as a car navigation display.
  • the display device 6 displays data or information output from the control unit 10 of the in-vehicle computer 1 via the input / output I / F 13.
  • FIG. 4 is a flowchart showing a management processing procedure of the virtual management ECU 101
  • FIG. 5 is an explanatory diagram showing a dynamic allocation process of physical resources
  • FIG. 6 is a functional block diagram showing a physical resource redistribution process.
  • the area ECU 2 constantly detects the usage status of the terminal device 3 to which the own device is connected, and transmits information indicating the usage status of the terminal device 3 to the vehicle-mounted computer 1 or the virtual management ECU 101 via the first vehicle-mounted communication line 121. (Step S11).
  • the virtual management ECU 101 receives the information transmitted from the area ECU 2, and monitors the usage state of the terminal device 3 provided in each area ECU 2 based on the received information (step S12).
  • the virtual management ECU 101 determines whether or not there is a terminal device 3 to be started to be used (step S13). If it is determined that there is no terminal device 3 to be used (step S13: NO), the process proceeds to step S15.
  • the virtual management ECU 101 is a device that controls the operation of the terminal device 3 by using the virtualization operating system 11a.
  • the virtual management ECU 101 monitors the operation of one or a plurality of generated virtual ECUs 102, and dynamically allocates the physical resources according to the usage status of the physical resources by the plurality of virtual ECUs 102 (step S15). For example, as shown in FIGS. 3 and 5, the physical resource allocation of the Ethernet communication unit 12a is changed. In FIGS. 3 and 5, “1G”, “2G”, and “3G” indicate the amount of physical resources of the Ethernet communication unit 12a assigned to the virtual management ECU 101 and the virtual ECU 102. It can be seen that the physical resource "1G" of the second virtual ECU 102 from the right is redistributed to the third virtual ECU 102 from the right.
  • the virtual management ECU 101 can recognize the usage status of the physical lease assigned to the plurality of virtual ECUs 102 through the virtualization operating system. That is, the virtual management ECU 101 reduces the physical resources of the virtual ECU 102 that does not use much physical resources, and redistributes the reduced physical resources to the virtual ECU 102 that lacks the physical resources.
  • the dynamic allocation of physical resources is not automatically performed by the virtualization operating system 11a, but is executed by the virtual management ECU 101. This is because if physical resources are allocated at the discretion of the virtualization operating system 11a without recognizing the features and functions of the virtual ECU 102, an unexpected problem occurs in the control of the vehicle C.
  • the virtual management ECU 101 does not dynamically allocate physical resources only based on the usage status of the terminal device 3, but allocates a physical lease according to the function and characteristics of the virtual ECU 102 related to the terminal device 3. Is desirable.
  • the virtual management ECU 101 may store the lower limit value of the physical resource to be allocated to the virtual ECU 102 of the terminal device 3 in the virtual storage unit.
  • the virtual management ECU 101 dynamically allocates the physical lease within a range not falling below the lower limit value stored in the virtual storage unit.
  • the virtual ECU 102 generated by the above processing is a device for controlling the operation of the terminal device 3, and serves as a virtual vehicle-mounted control device connected to the first vehicle-mounted communication line 121 or the second vehicle-mounted communication line 122. It operates (step S16).
  • the area ECU 2 transmits / receives data related to the operation of the terminal device 3 to / from the virtual management ECU 101 (step S17).
  • the virtual ECU 102 operates as the terminal device 3 by using the transmitted / received data.
  • the virtual management ECU 101 monitors the usage state of the terminal device 3 provided in each area ECU 2 in the same manner as in step S12, and determines whether or not there is a terminal device 3 to be used (step S18). .. When it is determined that there is no terminal device 3 to be used (step S18: NO), the virtual management ECU 101 ends the process.
  • step S18 When it is determined that there is a terminal device 3 whose use ends (step S18: YES), the virtual management EUC extinguishes the virtual ECU 102 related to the terminal device 3 whose use ends (step S19).
  • the virtual management ECU 101 redistributes the physical resources allocated to the extinguished virtual ECU 102 to the other virtual ECU 102 (step S20), and ends the process. For example, in the examples shown in FIGS. 3 and 6, when the second virtual ECU 102 from the right disappears, the physical lease “2G” of the Ethernet communication unit 12a of the virtual ECU 102 is “1G” for each of the two virtual ECUs 102. It is redistributed one by one.
  • the in-vehicle computer 1 provides and manages the physical resources necessary for operating the terminal device 3 in the in-vehicle communication system including the in-vehicle computer 1 and the plurality of area ECUs 2. Therefore, the physical resources of the in-vehicle communication system can be efficiently used.
  • the area ECU 2 does not need to have the physical resources required for the operation of the terminal device 3. Therefore, when many area ECUs 2 are connected to the in-vehicle communication system, the physical resources required for each area ECU 2 can be reduced.
  • the present embodiment by consolidating the physical resources required for the operation of the terminal device 3 on the in-vehicle computer 1, the physical resources can be efficiently used.
  • the physical resources of the in-vehicle computer 1 can be efficiently used by generating the virtual ECU 102 related to the terminal device 3.
  • the physical resource of the in-vehicle computer 1 is more efficiently generated by extinguishing the virtual ECU 102 and releasing the physical resource. Can be used.
  • the virtual ECU 102 related to the terminal device 3 When the virtual ECU 102 related to the terminal device 3 is generated, when the terminal device 3 is not used, the virtual ECU 102 is extinguished and the released physical resources are distributed to the other virtual ECU 102, thereby causing the in-vehicle computer.
  • the physical resource of 1 can be effectively used.
  • the physical resources of the in-vehicle computer 1 can be more efficiently allocated by dynamically allocating the physical resources required for the operation according to the usage status of the plurality of terminal devices 3. It can be used.
  • the physical resources related to the communication unit 12 can be dynamically allocated to the virtual ECUs 102 of the plurality of terminal devices 3, and the physical resources of the communication unit 12 of the in-vehicle computer 1 can be efficiently used.
  • In-vehicle computer 2 Area ECU (in-vehicle control unit) 3 Terminal equipment 4 ECU 5 External communication device 6 Display device 10 Control unit 11 Storage unit 11a Virtualization operating system 11b Computer program 11c Guest OS 11d Dedicated program 12 Communication unit 12a Ethernet communication unit 12b CAN communication unit 13 I / O I / F 50 Antenna 101 Virtual management ECU (management processing unit) 102 Virtual ECU (virtual in-vehicle control unit) 121 1st in-vehicle communication line 122 2nd in-vehicle communication line A External server C Vehicle

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Abstract

L'invention concerne un ordinateur embarqué comprenant : une ressource physique comprenant une unité de communication communiquant avec un dispositif de commande embarqué au moyen d'une ligne de communication embarquée, d'une unité de commande et d'une unité de stockage ; et une unité de traitement de gestion attribuant la ressource physique et générant un dispositif de commande virtuel, le dispositif de commande virtuelle fonctionnant en tant que dispositif de commande embarqué connecté à la ligne de communication embarquée.
PCT/JP2020/007111 2019-04-09 2020-02-21 Ordinateur embarqué, système de communication embarqué, procédé d'exécution d'ordinateur, et programme informatique WO2020208954A1 (fr)

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US11836475B2 (en) 2020-11-27 2023-12-05 Denso Corporation Electronic control unit, software update method, software update program product and electronic control system
US11836476B2 (en) 2020-11-27 2023-12-05 Denso Corporation Electronic control unit, software update method, software update program product and electronic control system
US20220171613A1 (en) 2020-11-27 2022-06-02 Denso Corporation Electronic control unit, software update method, software update program product and electronic control system
JP2023152495A (ja) * 2022-04-04 2023-10-17 株式会社オートネットワーク技術研究所 車載装置、コンピュータプログラム及びプログラム更新方法

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JP2010250620A (ja) * 2009-04-16 2010-11-04 Fujitsu Ltd プログラム、コンピュータ、仮想マシン制御方法及び仮想マシン制御システム
JP2013148938A (ja) * 2012-01-17 2013-08-01 Hitachi Ltd 情報処理装置及び情報処理システム
JP2019034684A (ja) * 2017-08-21 2019-03-07 住友電気工業株式会社 車載機器制御システム、管理サーバ、車載通信装置、コンピュータプログラム、および車載機器制御方法

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JP2013148938A (ja) * 2012-01-17 2013-08-01 Hitachi Ltd 情報処理装置及び情報処理システム
JP2019034684A (ja) * 2017-08-21 2019-03-07 住友電気工業株式会社 車載機器制御システム、管理サーバ、車載通信装置、コンピュータプログラム、および車載機器制御方法

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