Dynamic Active Safety Threshold Adjustment
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Solution Overview
Problem
Existing vehicle safety systems lack the ability to tailor their active safety functionality to specific driving conditions and vehicle usage, leading to suboptimal performance in various situational risks.
Innovation Solution
A method and system that adjust active safety functionality thresholds based on a calculated risk factor grade, obtained by processing data on driving and usage conditions using a processor, to provide tailored actions during a drive cycle.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If active safety systems use fixed predetermined thresholds, then system simplicity is maintained, but adaptability to different driving conditions deteriorates
Solution Approach 1:
The patent applies dynamics by transforming fixed thresholds into dynamic, adjustable thresholds that adapt to changing driving conditions. The controller continuously monitors driving conditions and usage data, then adjusts the predetermined threshold accordingly. This allows the active safety system to be more responsive to actual driving scenarios while maintaining a relatively simple overall system architecture.
Solution Approach 2:
The patent implements parameter changes by modifying the predetermined threshold parameter based on calculated risk factor grades. Instead of using a static threshold value, the system adjusts this parameter dynamically according to driving conditions (e.g., weather, road conditions) and usage data (e.g., driver behavior patterns), enabling adaptability without requiring complete system redesign.
2Reliability
If active safety systems take actions sooner in risky situations, then safety effectiveness is improved, but false alarms and unnecessary interventions increase
Solution Approach 1:
The patent applies feedback by implementing a closed-loop system that continuously monitors driving conditions and usage data, calculates risk factor grades, and adjusts thresholds accordingly. The system receives feedback from sensors and data sources about actual driving scenarios, processes this information through the controller, and modifies safety thresholds in real-time. This feedback mechanism enables the system to distinguish between genuine high-risk situations requiring intervention and normal variations that would trigger false alarms.
Solution Approach 2:
The patent implements preliminary action by pre-calculating and storing usage data and driver behavior patterns before making safety decisions. The system collects and analyzes historical data about driving conditions and driver responses, then uses this pre-processed information to adjust thresholds proactively rather than reactively. This allows the system to anticipate risky situations and prepare appropriate threshold adjustments in advance, reducing false alarms while maintaining safety effectiveness.
Data Source
AI summary
Methods, systems, and vehicles are provided for controlling active safety functionality for a vehicle. The active safety functionality provides an action during a drive cycle of the vehicle based on a predetermined threshold. Data pertaining to driving conditions, usage conditions of the vehicle, or both, is obtained for a drive cycle of the vehicle. A risk factor grade is calculated using the data. The risk factor grade corresponds to a level of situational risk for the drive cycle. The predetermined threshold of the active safety system is adjusted based on the risk factor grade.