In-Vehicle Network Setting Coordination for Faster Reconfiguration
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Solution Overview
Problem
Existing in-vehicle network systems require a long time to establish communication after changes in network settings, leading to delays in network reconfiguration.
Innovation Solution
An on-vehicle control device that generates setting information based on the vehicle's state and derives overlapping required time periods for network setting changes in multiple devices, allowing coordinated and efficient setting updates to minimize downtime.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If network settings are changed in multiple on-vehicle devices sequentially, then each device can complete its setting change reliably, but the total time required for network reconfiguration becomes long
Solution Approach 1:
The control unit derives the required time periods for setting changes in advance before actually executing the setting changes. By calculating and planning the timing of setting changes for multiple devices beforehand, the system can coordinate them to overlap properly, reducing total reconfiguration time while ensuring reliable completion of each device's setting change.
Solution Approach 2:
The system dynamically adjusts the timing of setting changes for different devices based on their individual required time periods. By making the setting change timing flexible and adaptive rather than fixed and sequential, the system can overlap operations to reduce total time while maintaining reliability of each device's setting change process.
2Loss of time
If network setting changes are performed in parallel across multiple devices, then the overall reconfiguration time is reduced, but coordination complexity and potential conflicts increase
Solution Approach 1:
The control unit uses feedback from the derived required time periods to determine the optimal timing for setting changes in each device. By continuously monitoring and adjusting the timing based on the specific requirements of each device, the system can coordinate parallel setting changes without excessive complexity or conflicts, achieving efficient overlap while maintaining reliability.
3Reliability
If the system waits for all devices to complete setting changes before resuming communication, then communication reliability is maintained, but communication downtime increases
Solution Approach 1:
The control unit derives and plans the setting change timing for all devices in advance, determining the optimal overlap period before communication resumes. This preliminary planning allows the system to minimize communication downtime while ensuring that setting changes are completed reliably, as the resumption timing is calculated beforehand based on the required time periods of all devices.
Data Source
AI summary
An in-vehicle control device is installed in a vehicle and comprises a control unit performing control related to communication between a first in-vehicle device and a second in-vehicle device via an in-vehicle network. The control unit generates setting information of the in-vehicle network according to a state of the vehicle, derives a required time period required to change a network setting according to the setting information in the first in-vehicle device, derives a required time period required to change a network setting according to the setting information in the second in-vehicle device, and performs a setting change instruction on at least one of the network setting in the first in-vehicle device and the network setting in the second in-vehicle device so that the derived two required time periods at least partially overlap with each other.