Vehicle Control ECU Segmentation for Safety Monitoring
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Solution Overview
Problem
Existing vehicle control systems face challenges in accurately monitoring and responding to operating conditions such as path deviation, lane width, user awareness, and steering torque, which can lead to unsafe vehicle operation, particularly in transitioning between autonomous and manual modes.
Innovation Solution
A system comprising multiple electronic control units (ECUs) that monitor and control vehicle operations using different communication protocols with security measures to ensure data reliability and accuracy, allowing for real-time adjustments and alerts to maintain safe vehicle control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple ECUs monitor operating conditions using different communication protocols with security measures, then data reliability and accuracy are improved, but device complexity increases
Solution Approach 1:
The system divides the monitoring function into multiple independent ECUs (first ECU and second ECU), each monitoring different operating conditions (first and second operating conditions respectively). This segmentation allows each ECU to specialize in specific monitoring tasks while maintaining overall system reliability through redundant monitoring paths with different communication protocols.
Solution Approach 2:
The patent introduces a coordinator ECU that acts as an intermediary to manage communications between multiple ECUs and other vehicle systems. This intermediary handles the complexity of coordinating multiple communication protocols and security measures, allowing individual ECUs to focus on their specific monitoring functions without being burdened by protocol management complexity.
2Measurement precision
If multiple ECUs monitor operating conditions with security measures, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The monitoring system is segmented into multiple specialized ECUs, each responsible for specific operating conditions (path deviation, lane width, user awareness, steering torque). This segmentation enables each ECU to optimize its measurement precision for specific parameters while the overall system complexity is managed through modular architecture.
Solution Approach 2:
Each ECU is configured with specific monitoring capabilities tailored to its designated operating conditions. For example, the first ECU monitors path deviation with specific precision requirements, while the second ECU monitors steering torque with different precision characteristics. This local quality optimization allows each component to achieve high measurement precision for its specific function without requiring all components to be overly complex.
Data Source
AI summary
A computer in a vehicle includes first and second electronic control units (ECUs). The first and second ECUs are programmed to monitor, respectively, a first operating condition and a second operating condition. Each operating condition includes one of path deviation, lane width, user awareness, or steering torque. The second ECU is programmed to monitor the second operating condition according to a protocol with a security measure. The first or second ECU is further programmed to control vehicle operation based on the first or second operating condition.