Vehicle Alert Apparatus Intersection Geometry Filtering
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional vehicle alert apparatuses generate unnecessary alerts by detecting approaching vehicles that will not actually collide with the host vehicle, leading to driver annoyance and reduced reliability.
Innovation Solution
A vehicle alert apparatus that uses vehicle-vehicle communication and intersection information to determine approaching states, inhibiting alerts when a detected vehicle is approaching from orientations where collision is unlikely based on intersection geometry, regulatory conditions, or traffic signals, thereby narrowing the assistance-target orientations for alerts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If vehicle-vehicle communication is used to detect approaching vehicles, then the alert function is enhanced, but unnecessary alerts are generated when vehicles are approaching from orientations where collision is unlikely
Solution Approach 1:
The alert device is configured to provide different alert behaviors for different spatial orientations. Specifically, alerts are suppressed for vehicles approaching from orientations where collision is unlikely (e.g., grade-separated intersections) while maintaining alert functionality for orientations where collision risk exists. This localized differentiation of alert behavior resolves the contradiction by making the alert system context-aware of intersection geometry and traffic regulations.
Solution Approach 2:
The system changes the operational parameters of the alert device based on intersection information. By acquiring intersection data (grade separation status, traffic signals, regulatory conditions) and dynamically adjusting whether alerts are generated for approaching vehicles, the system adapts its alert behavior to match the actual collision risk, thereby reducing unnecessary alerts while maintaining reliability for genuine threats.
2Reliability
If alerts are given for all approaching vehicles, then driver awareness is improved, but driver annoyance increases due to false alerts
Solution Approach 1:
The system performs preliminary analysis of intersection information before generating alerts. By pre-acquiring data about intersection geometry, grade separation, traffic signals, and regulatory conditions, the system determines in advance whether an approaching vehicle poses a genuine collision risk. This preliminary assessment prevents false alerts from being generated, thereby maintaining driver satisfaction while preserving collision detection accuracy.
Solution Approach 2:
Intersection information acts as an intermediary between vehicle detection and alert generation. The alert device uses this intermediate data layer (intersection geometry, traffic regulations, signal status) to mediate whether an alert should be triggered for a detected approaching vehicle. This intermediary assessment layer filters out false positives while maintaining true positive detection, resolving the contradiction between accuracy and driver satisfaction.
3Reliability
If the alert device operates for all detected target vehicles, then safety coverage is maximized, but system complexity increases due to need for orientation analysis
Solution Approach 1:
The alert device is designed with multi-functionality to handle both simple and complex scenarios through a unified control logic. It universally processes all approaching vehicles but applies different decision rules based on intersection information. The same device structure manages both the suppression case (grade-separated intersections) and the alert case (standard intersections), achieving comprehensive safety coverage without requiring separate systems for different scenarios.
Data Source
AI summary
An alert ECU acquires intersection information representing a situation of an intersection (target intersection) where a host vehicle will enter. The alert ECU excludes the leftward and rightward orientations from assistance-target orientations when the target intersection is grade separated, when a traffic light is installed at the target intersection, when a median strip is installed in the target intersection along the host vehicle traveling direction, or when a stop sign is not installed at the target intersection. As a result, an alert to a driver for a target vehicle is inhibited when the target vehicle is approaching the host vehicle from an orientation in which it is estimated that the target vehicle cannot collide with the host vehicle and when the target vehicle is approaching the host vehicle from an orientation in which it is estimated that the target vehicle will not collide with the host vehicle for regulatory reasons.