Autonomous Vehicle Route Control Under Safety System Faults
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Solution Overview
Problem
Existing vehicle control systems for autonomous driving face challenges in maintaining safety and continuity when abnormalities occur within the safety control system itself, rather than just the autonomous driving control system.
Innovation Solution
A vehicle control system that includes both an autonomous driving control system and a safety control system, where the safety control system communicates with the autonomous driving control system to stop the vehicle in case of failures, and sets alternative travel routes based on hazard maps to avoid conditions that could exacerbate the failure, ensuring both safety and continuity of autonomous driving.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the safety control system stops the vehicle immediately when any abnormality occurs, then vehicle safety is improved, but the continuity of autonomous driving deteriorates
Solution Approach 1:
The patent applies partial action by differentiating between critical and non-critical abnormalities. When a non-critical abnormality occurs in the safety control system, the vehicle continues autonomous driving with restricted functions rather than stopping completely. This partial operation approach maintains productivity while ensuring safety through functional limitations and monitoring.
Solution Approach 2:
The system dynamically adjusts the autonomous driving function based on the type of abnormality detected. The autonomous driving control system receives abnormality information from the safety control system and adaptively modifies its operation level - continuing normal operation for minor issues, restricting functions for moderate issues, and stopping only for critical failures. This dynamic response resolves the contradiction between safety and continuity.
2Reliability
If the autonomous driving control system restricts travel routes when safety control system abnormalities occur, then vehicle safety is improved, but the flexibility of autonomous driving deteriorates
Solution Approach 1:
The patent applies local quality by implementing spatial restrictions on travel routes based on the type of abnormality. Rather than completely restricting movement, the system prohibits travel only in specific hazardous areas (such as construction zones or areas with poor road conditions) while allowing normal travel in safe areas. This localized restriction maintains flexibility while ensuring safety.
3Ease of operation
If the safety control system communicates detailed abnormality information to the autonomous driving control system, then the appropriateness of control responses is improved, but the complexity of the control system increases
Solution Approach 1:
The safety control system performs preliminary classification of abnormalities into distinct types (critical, moderate, minor) before communicating with the autonomous driving control system. This pre-categorization simplifies the information exchange and enables the autonomous driving system to immediately apply appropriate response protocols without complex real-time analysis, reducing overall system complexity while maintaining appropriate control responses.
Data Source
AI summary
The present disclosure relates to a vehicle control system. The vehicle control system includes an autonomous driving control system that controls autonomous driving of the vehicle, and a safety control system that communicates with the autonomous driving control system and stops the vehicle when the autonomous driving control system fails or when communication is abnormal. The safety control system notifies the autonomous driving control system of the contents of the failure when a failure of a part of the function of the safety control system occurs. The autonomous driving control system sets a traveling route to a destination during the autonomous driving in accordance with the contents of the failure.