Vehicle Obstacle Alert Prioritization for Blind Spot Warnings
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Solution Overview
Problem
Driver assistance systems often provide unnecessary warnings, distracting the driver and making it difficult to react to relevant alerts due to the high number of notifications, especially with acoustical and haptic warnings.
Innovation Solution
A driver assistance system that uses sensors to monitor the vehicle's vicinity and adjust alert levels based on the position, motion, and visibility of potential foreign objects, providing low-level alerts for visible objects and high-level alerts for invisible objects, with additional flashing visual, acoustic, and haptic alerts only in situations of increased danger.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple warnings are provided to cover all potential obstacles, then the completeness of danger notification is improved, but the driver's attention is overstrained and irrelevant warnings distract from relevant ones
Solution Approach 1:
The patent applies local quality by providing different alert levels (first, second, third levels) for different spatial zones around the vehicle. Objects in the blind spot receive high-priority alerts, while objects in the visible area receive lower-priority alerts. This spatial differentiation ensures comprehensive coverage without uniformly distracting the driver.
Solution Approach 2:
The patent uses composite alert mechanisms combining multiple warning types (visual, acoustic, haptic) with different intensities. The system composes these alert types in a hierarchical structure where higher-level alerts use more intense combinations, allowing complete notification while maintaining driver focus through graduated intensity.
2Reliability
If high-level alerts are provided for all detected objects, then the driver's attention is ensured, but unnecessary disturbance occurs for objects that are already visible or far away
Solution Approach 1:
The patent changes the alert intensity parameter based on the object's position and visibility. Objects in the blind spot trigger high-intensity alerts (acoustic + haptic), while visible objects trigger low-intensity visual alerts only. This parameter adaptation ensures driver attention for critical objects without causing unnecessary disturbance.
Solution Approach 2:
The patent applies partial action by providing only the necessary level of alert for each object. Full alert intensity is reserved for blind spot objects where it is truly needed, while partial alert intensity is used for visible objects, avoiding excessive action and its associated disturbance.
3Reliability
If the number of alerts is increased to cover all potential collisions, then the safety coverage is improved, but the driver's ability to react to all warnings is reduced
Solution Approach 1:
The patent segments the alert system into three distinct levels with different characteristics and intensities. This segmentation allows the system to maintain comprehensive safety coverage by alerting to all objects while improving driver reaction ability through hierarchical prioritization that makes critical alerts stand out.
Solution Approach 2:
The patent implements dynamic alert allocation where the system continuously adjusts which objects receive which alert levels based on real-time position and visibility data. This dynamic approach ensures optimal safety coverage while maintaining driver reaction ability by adapting alert distribution to current driving conditions.
Data Source
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AI summary
A driver assistance system (1) for a vehicle (100) and a method are provided, being adapted to provide alerts to a driver in certain situations, e.g. if a foreign object (400) is invisible for the driver or if there is an increased danger for a collision. The alert level is adapted to depend on the position and/or the direction of movement of the at least one foreign object (400) and/or the direction of movement of the vehicle (100), which are measured by at least one sensor (300).