Vehicle Power Source ECU Communication Continuity During Disruptions
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Solution Overview
Problem
Communication disruptions between the electric power source control ECU and the EPS ECU can lead to the auxiliary electric power source being unavailable, as existing systems often stop communication to prevent control based on incorrect data, resulting in potential operational failures.
Innovation Solution
An electric power source apparatus with a drive control apparatus and an auxiliary control apparatus that continue communication and execute notification processes even when normal communication is disrupted, allowing the auxiliary electric power source to be used by retaining and updating communication content, and providing driver alerts for abnormal situations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If communication is stopped when disruption is detected, then control safety is improved, but auxiliary electric power source availability deteriorates
Solution Approach 1:
The communication control dynamically adjusts between stopping and continuing communication based on the specific disruption scenario. The system determines whether to stop or continue communication by evaluating the cause of disruption, thereby adapting the communication behavior to maintain both safety and availability under different conditions
Solution Approach 2:
The system implements feedback by monitoring communication status and using this information to control subsequent communication attempts. The communication control apparatus receives communication status information and uses it to determine whether to permit or stop communication, creating a closed-loop control system that balances safety and availability
2Productivity
If communication is continued during disruption, then auxiliary electric power source availability is improved, but control reliability deteriorates
Solution Approach 1:
The communication control dynamically switches between stopping and continuing communication based on the specific disruption scenario. The system determines whether to stop or continue communication by evaluating the cause of disruption, thereby adapting the communication behavior to maintain both safety and availability under different conditions
Solution Approach 2:
The communication control apparatus acts as an intermediary that mediates between the drive control apparatus and auxiliary control apparatus during communication disruptions. It evaluates the disruption cause and determines the appropriate communication strategy, serving as a decision-making intermediary that balances reliability and availability concerns
3Reliability
If start-up switch operation is required to restore communication, then communication reliability is improved, but operational convenience deteriorates
Solution Approach 1:
The system implements self-service by automatically detecting communication disruptions and controlling the restoration process without requiring driver intervention. The communication control apparatus autonomously determines when to restore communication based on disruption cause analysis, eliminating the need for manual start-up switch operations while maintaining communication reliability
Data Source
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AI summary
An electric power source apparatus includes a drive control apparatus (20) and an auxiliary control apparatus (50). The drive control apparatus (20) and the auxiliary control apparatus (50) are configured to communicate with each other. When one of the drive control apparatus (20) and the auxiliary control apparatus (50) is a first control apparatus and the other of the drive control apparatus (20) and the auxiliary control apparatus (50) is a second control apparatus, the first control apparatus is configured to continue a function to communicate with the second control apparatus even when the first control apparatus is not able to normally communicate with the second control apparatus, and configured to execute communication with the second control apparatus when the first control apparatus is put into a state where the first control apparatus is able to normally communicate with the second control apparatus.