Vehicle Consciousness Detection Threshold Adaptation
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Solution Overview
Problem
Existing systems for detecting sudden steering after a non-steering state in vehicles are prone to detection errors due to varying steering angular speeds in different traveling environments, such as curved and straight roads, leading to inaccurate determination of consciousness-degraded states.
Innovation Solution
A low-level consciousness determination system that includes curved road determination means to identify whether the vehicle is on a curved road, threshold value setting means to adjust sudden steering detection thresholds based on the environment, and sudden steering detection means to accurately detect sudden steering by setting different threshold values for outside and inside positions on a curved road.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a fixed threshold value is used for sudden steering detection, then the detection method is simple, but detection accuracy decreases due to varying steering angular speeds in different traveling environments
Solution Approach 1:
The threshold value is changed dynamically based on the detected traveling environment. The system detects whether the vehicle is on a straight road, curved road, or intersecting road, and automatically adjusts the threshold value accordingly. This dynamic adaptation allows the system to maintain high detection accuracy across varying steering angular speeds without increasing operational complexity.
Solution Approach 2:
The threshold parameter for sudden steering detection is modified according to the traveling environment. By changing the threshold value parameter based on road type detection, the system achieves accurate detection across different environments where steering angular speeds vary, resolving the contradiction between simple detection methods and accurate measurement.
2Reliability
If the threshold value is increased to avoid false detection on curved roads, then false positives decrease, but sudden steering may not be detected even when it actually occurs
Solution Approach 1:
Different threshold values are applied to different traveling environments (straight roads, curved roads, intersecting roads). Each environment has its own optimized threshold value that matches the typical steering characteristics of that environment, allowing the system to maintain high reliability and sensitivity simultaneously by tailoring the detection criterion to local conditions.
Solution Approach 2:
The threshold value adapts dynamically to the current traveling environment rather than remaining fixed. This allows the system to optimize detection sensitivity for each specific environment, preventing both false positives and missed detections by matching the threshold to the expected steering behavior in that environment.
3Measurement precision
If different threshold values are set for different traveling environments, then detection accuracy improves, but the system complexity increases
Solution Approach 1:
The system performs preliminary detection of the traveling environment (straight road, curved road, or intersecting road) before applying the threshold value for sudden steering detection. This preliminary classification allows the system to select the appropriate threshold value, achieving high detection accuracy through a structured two-step process that manages complexity systematically.
Solution Approach 2:
The traveling environment is segmented into distinct categories (straight roads, curved roads, intersecting roads), each with its own threshold value. This segmentation allows the system to handle different environments separately with optimized parameters, improving detection accuracy while managing complexity through clear categorization and conditional logic.
Data Source
AI summary
The low-level consciousness determination system includes curved road determination means for determining whether a road on which the vehicle is traveling is a curved road and determining whether the vehicle is traveling on the outside of the curved road or on the inside of the curved road when the road is the curved road, threshold value setting means for setting different sudden steering determination threshold values when the curved road determination means determines that the road is not the curved road, when the curved road determination means determines that the vehicle is traveling on the outside of the curved road, and when the curved road determination means determines that the vehicle is traveling on the inside of the curved road, and sudden steering detection means for detecting the sudden steering on the basis of the threshold values set by the threshold value setting means after the non-steering state is detected.