JP2022010389A5

JP2022010389A5 -

Info

Publication number: JP2022010389A5
Application number: JP2021187780A
Authority: JP
Filing date: 2021-11-18
Publication date: 2022-12-27
Anticipated expiration: 2039-07-12

Description

請求項２に記載した車両用電子制御システム（１）によれば、車両用マスタ装置（１１）において、書込みデータ配信部（７３）は、車両電源のオン中に、前記書換え対象の電子制御装置である前記車両用スレーブ装置へ前記更新データを配信する。書換え中判定部（９２ｂ）は、プログラムの書換え状態を判定する。電源自己保持指示部（９２ｄ）は、前記書換え中判定部により判定された書換え状態に基づいて、前記第１電源自己保持回路の有効化を前記車両用スレーブ装置に指示する。 According to the vehicle electronic control system (1) described in claim 2 , in the vehicle master device (11), the write data distribution section (73) is configured to control the electronic control device to be rewritten while the vehicle power supply is on. and distributes the update data to the vehicle slave device. A rewriting determining section (92b) determines the rewriting state of the program. A power supply self-holding instruction section (92d) instructs the vehicle slave device to activate the first power supply self-holding circuit based on the rewriting state determined by the rewriting in-progress determination section.

Claims

A vehicle electronic control system ( In 1),
The vehicle master device includes :
a write data distribution unit (73) that distributes the update data to the vehicle slave device that is the electronic control device to be rewritten;
a rewrite determination unit (92b) that determines the rewrite state of the program;
a power supply self-holding instruction section (92d) for instructing the vehicle slave device to activate the first power supply self-holding circuit when the program rewrite is not completed ;
The vehicle slave device includes:
a program rewriting unit (102) for writing the distributed update data into the nonvolatile memory;
a first power supply self-holding enabling unit (108b) for enabling the first power supply self-holding circuit when the vehicle power supply is off when the activation of the first power supply self-holding circuit is instructed;
a first power supply self-holding stopping unit (108d) for stopping the first power supply self-holding circuit when a condition for stopping the first power supply self-holding circuit is satisfied;
The vehicle electronic control system , wherein the program rewriting unit writes the update data to the nonvolatile memory when the vehicle power supply is off .

A vehicle electronic control system ( In 1),
The vehicle master device includes:
a write data distribution unit (73) for distributing the update data to the vehicle slave device which is the electronic control device to be rewritten while the vehicle power supply is on;
a rewriting determining section (92b) that determines the rewriting state of the program;
a power supply self-holding instruction section (92d) that instructs the vehicle slave device to activate the first power supply self-holding circuit based on the rewriting state determined by the rewriting in-progress determination section;
The vehicle slave device includes:
a program rewriting unit (102) for writing the distributed update data into the nonvolatile memory;
a first power supply self-holding enabling unit (108b) for enabling the first power supply self-holding circuit when the activation of the first power supply self-holding circuit is instructed;
A vehicle electronic control system , comprising: a first power supply self-holding stop section (108d) for stopping the first power supply self-holding circuit when a condition for stopping the first power supply self-holding circuit is satisfied .

2. The vehicle electronic control system according to claim 1, wherein the vehicle slave device validates, installs, and activates the first power supply self-holding circuit .

4. The first power supply self-holding enabler enables the first power supply self-holding circuit at least during a period from completion of installation to start of activation . Electronic control system for vehicles.

5. The vehicle electronic control system according to any one of claims 1 to 4, wherein the first power supply self-holding stop section stops the first power supply self-holding circuit according to an instruction from the vehicle master device .

6. The vehicle electronic control system according to claim 1, wherein the vehicle slave device is restarted by an activation instruction from the vehicle master device .

A vehicle slave device (7, 19, 20) that receives update data distributed from a vehicle master device (11) and has a first power supply self-holding circuit,
a program rewriting unit (102) for writing the received update data into a nonvolatile memory while the vehicle power is on;
a first power supply self-holding enabling unit (108b) for enabling the first power supply self-holding circuit when the activation of the first power supply self-holding circuit is instructed;
a first power supply self-holding stopping unit (108d) for stopping the first power supply self-holding circuit when a condition for stopping the first power supply self-holding circuit is satisfied.

A vehicle master device (11) for distributing update data to vehicle slave devices (7, 19, 20) having a first power supply self-holding circuit,
a write data distribution unit (73) for distributing the update data to the vehicle slave device which is the electronic control device to be rewritten while the vehicle power supply is on;
a rewriting determining section (92b) that determines the rewriting state of the program;
a power supply self-holding instruction section (92d) that instructs the vehicle slave device to enable and stop the first power supply self-holding circuit based on the rewriting state determined by the rewriting in-progress determination section (92d). master device .

A vehicle electronic control system ( In 1),
In the vehicle master device,
a written data distribution procedure for distributing the update data to the vehicle slave device, which is the electronic control device to be rewritten, while the vehicle power supply is on;
a rewriting determination procedure for determining a rewriting state of a program;
a power supply self-holding instruction procedure for instructing the vehicle slave device to activate the first power supply self-holding circuit based on the rewriting state determined by the rewriting in-progress determination procedure ;
In the vehicle slave device,
a program rewriting procedure for writing the distributed update data to the nonvolatile memory ;
a first power supply self-holding enabling procedure for enabling the first power supply self-holding circuit when the activation of the first power supply self-holding circuit is instructed;
and a first power supply self-holding stop procedure for stopping the first power supply self-holding circuit when a condition for stopping the first power supply self-holding circuit is satisfied .

receiving the update data distributed from the vehicle master device (11), to the vehicle slave devices (7, 19, 20) having the first power supply self-holding circuit,
a program rewriting procedure for writing the received update data to a nonvolatile memory while the vehicle is powered on;
a first power supply self-holding enabling procedure for enabling the first power supply self-holding circuit when the activation of the first power supply self-holding circuit is instructed;
and a first power supply self-holding stop procedure for stopping the first power supply self-holding circuit when a condition for stopping the first power supply self-holding circuit is satisfied.

In a vehicle master device (11) that distributes update data to vehicle slave devices (7, 19, 20) having a first power supply self-holding circuit,
a written data distribution procedure for distributing the update data to the vehicle slave device, which is the electronic control device to be rewritten, while the vehicle power supply is on;
a rewriting determination procedure for determining a rewriting state of a program;
a power supply self-holding instruction procedure for instructing the vehicle slave device to enable and stop the first power supply self-holding circuit based on the rewriting state determined by the rewriting determination procedure; control program.

A vehicle slave device (7, 19, 20) that receives update data distributed from a vehicle master device (11) and has a first power supply self-holding circuit,
a program rewriting unit (102) for writing the received update data into a non-volatile memory;
a first power supply self-holding enabling unit (108b) for enabling the first power supply self-holding circuit when the vehicle power supply is off when the activation of the first power supply self-holding circuit is instructed;
a first power supply self-holding stopping unit (108d) for stopping the first power supply self-holding circuit when a condition for stopping the first power supply self-holding circuit is satisfied;
The program rewriting unit writes the update data into the non-volatile memory when the power supply of the vehicle is off.

A vehicle master device (11) for distributing update data to vehicle slave devices (7, 19, 20) having a first power supply self-holding circuit,
a write data distribution unit (73) that distributes the update data to the vehicle slave device that is the electronic control device to be rewritten;
a rewriting determining section (92b) that determines the rewriting state of the program;
and a power source self-holding instruction section (92d) for instructing the vehicle slave device to activate the first power source self-holding circuit before program rewriting is completed.

A vehicle electronic control system ( In 1),
In the vehicle master device,
a write data distribution procedure for distributing the update data to the vehicle slave device, which is the electronic control device to be rewritten;
a rewrite determination procedure for determining a rewrite state of a program;
a power supply self-holding instruction procedure for instructing the vehicle slave device to activate the first power supply self-holding circuit when the program rewrite is not completed;
In the vehicle slave device,
a program rewriting procedure for writing the distributed update data to the nonvolatile memory;
a first power supply self-holding activation procedure for activating the first power supply self-holding circuit when a vehicle power supply is off when activation of the first power supply self-holding circuit is instructed;
performing a first power supply self-holding stop procedure for stopping the first power supply self-holding circuit when a condition for stopping the first power supply self-holding circuit is satisfied;
The program rewriting procedure is a power supply self-holding execution control method for writing the update data to the non-volatile memory when the vehicle power supply is off.

receiving the update data distributed from the vehicle master device (11), to the vehicle slave devices (7, 19, 20) having the first power supply self-holding circuit,
a program rewrite procedure for writing the received update data to a non-volatile memory;
a first power supply self-holding activation procedure for activating the first power supply self-holding circuit when a vehicle power supply is off when activation of the first power supply self-holding circuit is instructed;
executing a first power supply self-holding stop procedure for stopping the first power supply self-holding circuit when a condition for stopping the first power supply self-holding circuit is satisfied;
The program rewriting procedure is a power supply self-holding execution control program for writing the update data to the non-volatile memory when the vehicle power supply is off.

In a vehicle master device (11) that distributes update data to vehicle slave devices (7, 19, 20) having a first power supply self-holding circuit,
a write data distribution procedure for distributing the update data to the vehicle slave device, which is the electronic control device to be rewritten;
a rewriting determination procedure for determining a rewriting state of a program;
and a power supply self-holding instruction control program for executing a power supply self-holding instruction procedure for instructing the vehicle slave device to activate the first power supply self-holding circuit before program rewriting is completed.