In-Vehicle Network Communication Control Device for Synchronized Settings Updates
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Solution Overview
Problem
Existing technologies face communication troubles when network settings are changed, particularly during software downloads or when new ECUs are added, due to mismatched timing of software activation or logical connection.
Innovation Solution
A communication control device that includes a reception unit for receiving change notifications related to network settings and a reflection unit that updates the necessary settings information in the communication control device and connected switching control units at a specific trigger, thereby synchronizing network settings and preventing communication troubles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If network settings are changed during software download or new ECU connection, then the system adapts to changes, but communication trouble occurs due to timing mismatch
Solution Approach 1:
The communication control device performs preliminary actions by reflecting network settings changes in advance before software activation or ECU logical connection occurs. The reflection unit updates the communication control device and switching control unit with new settings information prior to the actual communication start, ensuring settings are ready before needed.
Solution Approach 2:
The system implements feedback mechanisms where the reception unit receives change notifications about network settings modifications, and the reflection unit processes these notifications to update settings in both the communication control device and switching control unit, creating a closed-loop system that ensures settings are synchronized.
2Reliability
If network settings are updated to match software activation timing, then communication stability is improved, but system complexity increases due to additional reflection mechanisms
Solution Approach 1:
The communication control device performs multiple functions through the reflection unit, which handles both receiving change notifications and reflecting settings changes to the switching control unit. This multi-functional approach consolidates complexity into a single component rather than requiring separate mechanisms for each function.
Solution Approach 2:
The reflection unit acts as an intermediary component between the reception unit and the switching control unit, mediating the settings change process. It receives change notifications, processes the new settings information, and reflects the updated settings to the switching control unit, simplifying the overall system architecture.
3Reliability
If settings information is reflected immediately upon change notification, then communication stability is improved, but system responsiveness decreases due to additional processing time
Solution Approach 1:
The system performs settings reflection in advance before the actual communication issue arises. By reflecting settings changes beforehand using the change notification as a trigger, the system eliminates the need for immediate reflection at the moment of communication trouble, reducing processing time delays.
Solution Approach 2:
The reflection unit continuously monitors for change notifications and maintains readiness to reflect settings changes. This continuous preparedness ensures that when a change occurs, the settings are already reflected or can be reflected instantly without interruption to communication operations, maintaining continuous useful action.
Data Source
AI summary
A central ECU serving as a communication control device receives a change notification related to a change in a communication setting of an in-vehicle network, and after receiving the change notification reflects new settings information of the network needed to accompany the change notification in the central ECU and an Ethernet switch connected to the central ECU by reflection at a specific trigger to operate the in-vehicle network.