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CN-122029517-A - In-vehicle network system, management device, storage medium, and method for starting target device

CN122029517ACN 122029517 ACN122029517 ACN 122029517ACN-122029517-A

Abstract

The in-vehicle network system (100) is provided with a management device (10) and a plurality of target devices that are communicable with the management device (10) and that are activated by the management device (10). In an in-vehicle network system (100), a management device (10) selects a startup method for starting at least one target device from among a first startup method and a second startup method. In the first starting method, a management device (10) starts at least one target device by controlling a power supply for controlling whether or not to supply power to the at least one target device. In the second startup method, the management device (10) causes at least one object device to start up by requesting startup from the at least one object device using communication. The management device (10) causes at least one of the target devices to be started by the selected starting method.

Inventors

  • Takaishi Daisuke
  • TOMITA SHINGO
  • SUGIYAMA KAZUYA
  • ANDOH HIROYA

Assignees

  • 丰田自动车株式会社

Dates

Publication Date
20260512
Application Date
20240829
Priority Date
20231020

Claims (20)

  1. 1. An in-vehicle network system, comprising: management device, and A plurality of target devices connected to the management device so as to be communicable and activated by the management device, The management device is configured to select a startup method for starting at least one of the plurality of target devices from a first startup method and a second startup method, and to start the at least one target device by the selected startup method, The first start-up method starts up the at least one target device by power supply control for controlling whether or not to supply power to the at least one target device, The second startup method causes the at least one object device to start by requesting startup from the management device to the at least one object device using communication.
  2. 2. The in-vehicle network system according to claim 1, wherein, A plurality of power control lines including a first power control line for directly connecting the management device and the plurality of target devices, The first power control line directly connects the management device to a plurality of target devices including the at least one target device, The management device is configured as follows: in the first startup method, all the target devices connected to the first power control line are started by the power control requested to be started via the first power control line directly connecting the management device to the at least one target device, In the second startup method, only a part of the target devices among the plurality of target devices are started up by using a communication request startup.
  3. 3. The in-vehicle network system according to claim 1, wherein, The management device is configured to select a method for starting the at least one target device from the first starting method and the second starting method when a signal requesting starting is obtained.
  4. 4. The in-vehicle network system according to claim 1, wherein, The management device is configured to select the startup method from the first startup method and the second startup method for each of the plurality of target devices.
  5. 5. The in-vehicle network system according to claim 1, wherein, Further comprising a plurality of power control lines for directly connecting the management device to the plurality of target devices, The plurality of power supply control lines are respectively connected with different combinations of the plurality of target devices, The management device is configured to select one power control line for minimizing an amount of power required for starting the at least one target device from the plurality of power control lines connected to the at least one target device when the first starting method is selected as the starting method for starting the at least one target device, and request starting by the selected power control line.
  6. 6. The in-vehicle network system according to claim 1, wherein, Further comprising a plurality of power control lines for directly connecting the management device to the plurality of target devices, The plurality of power supply control lines are connected to the target devices of different combinations of the plurality of target devices, The management device is configured to select one power control line which is connected to the at least one target device and has a small number of connected target devices from among the plurality of power control lines connected to the at least one target device when the first start-up method is selected as the start-up method for starting up the at least one target device, and to request start-up by the selected power control line.
  7. 7. The in-vehicle network system according to claim 1, wherein, And a plurality of intermediate devices for relaying communication from the management device to the plurality of target devices, The management device is configured to select the second startup method as the startup method when the number of intermediate devices interposed in a communication path between the management device and the at least one target device is equal to or less than a predetermined number.
  8. 8. The in-vehicle network system according to claim 7, wherein, The management device is configured to select the first startup method as the startup method when the number of intermediate devices interposed in a communication path between the management device and the at least one target device is greater than the predetermined number.
  9. 9. The in-vehicle network system according to any one of claims 1 to 8, wherein, The management device is provided with a storage device, The storage device stores a database storing data associating the content of the signal requesting activation acquired by the management device with the activation method for activating the at least one target device, The management device is configured to select, as the startup method of the at least one target device, the startup method corresponding to the content of the acquired signal requesting startup in the database.
  10. 10. The in-vehicle network system according to any one of claims 1 to 8, wherein, The management device is provided with a storage device, The storage device stores a database storing data associating the content of the signal requesting activation acquired by the management device with the status of the vehicle and the activation method for activating the at least one target device, The management device is configured to select, as the activation method of the at least one target device, the activation method corresponding to a combination of the content of the acquired signal requesting activation and the condition of the vehicle in the database.
  11. 11. The in-vehicle network system according to claim 10, wherein, The management device is configured to receive information identifying the device that sent the signal requesting activation when the signal requesting activation is acquired from another device.
  12. 12. The in-vehicle network system according to any one of claims 1 to 8, wherein, The management device is configured to receive information of an event corresponding to a specific function to be implemented by the plurality of target devices when a signal requesting activation is acquired from another device, The management device is provided with a storage device, The storage means stores a database storing data associating the event with the start-up method for starting up the at least one object device, The management device is configured to select the startup method corresponding to the received event in the database as the startup method of the at least one target device.
  13. 13. The in-vehicle network system according to any one of claims 1 to 8, wherein, The management device is configured to receive information identifying the device that sent the signal requesting activation when the signal requesting activation is acquired from another device, The management device is provided with a storage device, The storage device stores a first database storing data associating a combination of a source of a signal received by the management device and a state of a vehicle with an event corresponding to a specific function to be performed by the plurality of target devices, and a second database storing data associating the event with the activation method for activating the at least one target device, The management device is configured to perform: extracting the event corresponding to the combination of the source of the received signal and the condition of the vehicle from the first database, and And selecting the start-up method corresponding to the extracted event in the second database as the start-up method of the at least one target device.
  14. 14. The in-vehicle network system according to any one of claims 1 to 7, wherein, The start request time is a time which is preset and which is taken until all the target devices required for realizing the specific function are started, The management device is provided with a storage device, The storage device stores a database storing data associating the content of the signal requesting start acquired by the management device with the start request time and topology information of the vehicle-mounted network, The management device is configured to perform: Extracting the start request time corresponding to the content of the received start request signal from the database; A process of calculating a required time, which is a time taken when the at least one object device is started by the second start-up method, based on a position of the at least one object device with respect to the management device in the in-vehicle network, and The process of starting the at least one target device by the first starting method is selected when the required time is longer than the extracted starting request time, and starting the at least one target device by the second starting method is selected when the required time is equal to or shorter than the extracted starting request time.
  15. 15. The in-vehicle network system according to any one of claims 1 to 7, wherein, The start request time is a time which is preset and which is taken until all the target devices required for realizing the specific function are started, The management device is provided with a storage device, The storage device stores a database storing data associating the combination of the content of the signal acquired by the management device and the status of the vehicle with the start request time and topology information of the vehicle-mounted network, The management device is configured to perform: extracting, from the database, the start request time corresponding to a combination of the content of the received start request signal and the condition of the vehicle; A process of calculating a required time, which is a time taken when the at least one object device is started by the second start-up method, based on a position of the at least one object device with respect to the management device in the in-vehicle network, and The process of starting the at least one target device by the first starting method is selected when the required time is longer than the extracted starting request time, and starting the at least one target device by the second starting method is selected when the required time is equal to or shorter than the extracted starting request time.
  16. 16. The in-vehicle network system according to claim 15, wherein, The management device is configured to receive information identifying the device that sent the signal requesting activation when the signal requesting activation is acquired from another device.
  17. 17. The in-vehicle network system according to any one of claims 1 to 7, wherein, The start request time is a time which is preset and which is taken until all the target devices required for realizing the specific function are started, The management device is configured to receive information of an event corresponding to a specific function to be implemented by the plurality of target devices when a signal requesting activation is acquired from another device, The management device is provided with a storage device, The storage device stores a database storing data associating the event with the start request time and topology information of the vehicle-mounted network, The management device is configured to perform: Extracting the start request time corresponding to the received event from the database; A process of calculating a required time, which is a time taken when the at least one object device is started by the second start-up method, based on a position of the at least one object device with respect to the management device in the in-vehicle network, and The process of starting the at least one target device by the first starting method is selected when the required time is longer than the extracted starting request time, and starting the at least one target device by the second starting method is selected when the required time is equal to or shorter than the extracted starting request time.
  18. 18. The in-vehicle network system according to any one of claims 1 to 7, wherein, The start request time is a time which is preset and which is taken until all the target devices required for realizing the specific function are started, The management device is configured to receive information identifying the device that sent the signal requesting activation when the signal requesting activation is acquired from another device, The management device is provided with a storage device, The storage device stores topology information of a first database storing data associating a combination of a source of a signal received by the management device and a state of a vehicle with an event corresponding to a specific function to be performed by the plurality of target devices, a second database storing data associating the event with the start request time, The management device is configured to perform: extracting, from the first database, the event corresponding to a combination of the source of the received signal and the condition of the vehicle; extracting the start request time corresponding to the event from the second database; A process of calculating a required time, which is a time taken when the at least one object device is started by the second start-up method, based on a position of the at least one object device with respect to the management device in the in-vehicle network, and The process of starting the at least one target device by the first starting method is selected when the required time is longer than the extracted starting request time, and starting the at least one target device by the second starting method is selected when the required time is equal to or shorter than the extracted starting request time.
  19. 19. A management apparatus for enabling a plurality of target apparatuses connected to be capable of communication, wherein, The management device is configured to select a startup method for starting at least one of the plurality of target devices from a first startup method and a second startup method, and to start the at least one target device by the selected startup method, A first startup method for starting up the at least one target device by power supply control for controlling whether or not to supply power to the at least one target device, The second startup method causes the at least one object device to start by requesting startup from the management device to the at least one object device using communication.
  20. 20. The management device of claim 19, wherein, The device is provided with a storage device which is provided with a storage device, The storage device stores data obtained by integrating the startup methods of the plurality of target devices determined by the following steps: Calculating a time taken until the start-up of the target device is completed when the at least one target device is started up by the second start-up method; A step of comparing an upper limit activation time, which is an upper limit of a time period from when the management device transmits a request for activation to when the at least one target device is activated, with the required time period, and determining whether or not the at least one target device can be activated before the upper limit activation time period by the second activation method; And a step of determining to start the at least one target device by the second start-up method when it is determined that the at least one target device can be started up by the second start-up method before the upper limit start-up time And determining that the at least one target device is to be started by the first starting method when it is determined that the at least one target device cannot be started by the second starting method before the upper limit starting time.

Description

In-vehicle network system, management device, storage medium, and method for starting target device Technical Field The present disclosure relates to an in-vehicle network system, a management apparatus, a storage medium, and a method of starting an object apparatus. Background Patent document 1 discloses a power supply control system. The power supply control system includes a management device and a target device that is activated by the management device. The management device causes the target device to be started up by power supply control. Patent document 2 discloses an in-vehicle network system. In this in-vehicle network system, the management device requests start-up by using communication to start up the target device. Patent document 1 Japanese patent application laid-open No. 2017-33321 Patent document 2 Japanese patent application laid-open No. 2021-11228 In patent document 2, a power control line used for power control can be omitted by starting a target device by using a communication-based starting method instead of a power control-based starting method. Therefore, there is room for improvement in a startup method using both a startup method based on power supply control and a startup method based on communication. Disclosure of Invention In a first aspect of the present disclosure, an in-vehicle network system includes a management device and a plurality of target devices connected to the management device so as to be communicable and started by the management device. The management device selects a startup method for starting up at least one of the plurality of target devices from the first startup method and the second startup method. In the first startup method, the management device starts up the at least one target device by power supply control that controls whether or not to supply power to the at least one target device. In the second method, the management device requests start-up from the management device to the at least one target device by using communication to start up the at least one target device. In the in-vehicle network system, the management device is configured to activate the at least one target device by the selected activation method. In a second aspect of the present disclosure, a management apparatus activates a plurality of target apparatuses connected to be capable of communication. The management device selects a startup method for starting up at least one of the plurality of target devices from the first startup method and the second startup method. In the first startup method, the management device starts up the at least one target device by power supply control for controlling whether or not to supply power to the at least one target device. In the second startup method, the management device causes the at least one target device to start by requesting startup from the management device to the at least one target device using communication. The management device is configured to activate the at least one target device by the selected activation method. In a third aspect of the present disclosure, a non-transitory computer-readable storage medium stores a startup program of an object device in an in-vehicle network system including a management device and a plurality of object devices connected to the management device so as to be communicable and started by the management device. The startup program of the target device causes the management device to select a startup method for starting up at least one target device from among the plurality of target devices from a first startup method and a second startup method. In the first startup method, the management device starts up the at least one target device by power supply control that controls whether or not to supply power to the at least one target device. In the second startup method, the management device requests startup from the management device to the target device by using communication to start up the at least one target device. The start-up program of the target device causes the management device to start up the at least one target device by the selected start-up method. In a fourth aspect of the present disclosure, a method for starting a target device is a method for starting a target device in an in-vehicle network system including a management device and a plurality of target devices connected to the management device so as to be communicable and started by the management device. The method for starting up the target device includes a first step in which the management device selects a starting up method for starting up at least one target device from the plurality of target devices from the first starting up method and the second starting up method. In the first startup method, the management device starts up the at least one target device by power supply control that controls whether or not to supply power to the at least one target device. In the second startup method, the management devic