Autonomous Driving Interruption Threshold Adjustment
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Solution Overview
Problem
Autonomous driving systems face challenges in accurately recognizing road environments when map information differs significantly from actual conditions, leading to potential disruptions in autonomous driving control without adequate notification to occupants and surrounding vehicles.
Innovation Solution
An autonomous driving system that includes a map database, electronic control unit, and sensors to generate a travel plan, recognize vehicle position and road environment, and determine if autonomous driving control should be interrupted based on evaluation values calculated from comparison between planned and actual control values, providing interruption information to occupants and other vehicles if necessary.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If autonomous driving control is interrupted when map information differs significantly from actual road environment, then safety and reliability are improved, but unnecessary interruptions may occur reducing productivity
Solution Approach 1:
The system changes the evaluation threshold parameter dynamically based on location and time of day. In locations or times where road environment recognition is inherently less accurate (such as areas with poor lighting or complex road configurations), the threshold is adjusted to prevent unnecessary interruptions while maintaining safety.
Solution Approach 2:
The system continuously monitors the evaluation value comparing map information with actual road environment recognition results. When the evaluation value exceeds the threshold, the system provides interruption information to occupants and adjusts control based on feedback, allowing dynamic response to environmental discrepancies.
2Reliability
If interruption information is provided to occupants and other vehicles before interrupting autonomous driving control, then communication and safety are improved, but device complexity increases
Solution Approach 1:
The information providing unit leverages existing communication infrastructure and display systems already present in the vehicle. It uses the same communication interfaces and notification mechanisms that are part of the standard autonomous driving system, avoiding the need for separate dedicated notification hardware.
3Measurement precision
If evaluation threshold is set based on location and time of day, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The system pre-determines and stores appropriate evaluation thresholds for different locations and times of day. These thresholds are established in advance based on expected recognition accuracy for various environmental conditions, allowing the system to simply retrieve and apply the appropriate threshold rather than calculating it in real-time.
Data Source
AI summary
A vehicle includes an autonomous driving system that can determine whether an interruption of autonomous driving control is required. The autonomous driving system can determine that interruption is required based on an evaluation value dependent upon a target position and a control position, and an evaluation value threshold. The vehicle further includes communication systems that provide interruption information on the autonomous driving control to an occupant of the vehicle and to other vehicles around the vehicle if it is determined that the interruption of the autonomous driving control is required.