Driving Assist Lane-Change Region Correction to Prevent False Alerts
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Solution Overview
Problem
Conventional driving assist systems set operation regions based on vehicle traveling loci without considering lane shapes, leading to unnecessary alerts when other vehicles enter these regions, as they may not accurately reflect the traffic lane geometry.
Innovation Solution
A driving assist apparatus that includes a traveling locus calculation unit, operation region calculation unit, lane change detection unit, operation region correction unit, and operation determination unit, which corrects the operation region based on lane information after detecting a lane change, ensuring the region aligns with the traffic lane shape and reduces unnecessary alerts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the operation region is set based on the traveling locus of the own vehicle without considering lane shape, then the operation region can be calculated simply, but the operation region does not accurately reflect the traffic lane geometry, leading to unnecessary alerts
Solution Approach 1:
The patent merges the traveling locus calculation with lane shape information by integrating the lane change detection unit and operation region correction unit. When a lane change is detected, the system combines the original operation region calculation with lane shape data to correct and refine the operation region boundaries, ensuring accurate reflection of traffic lane geometry while maintaining calculation efficiency through conditional updates rather than continuous complex computations
Solution Approach 2:
The system dynamically adjusts the operation region based on detected lane changes. The operation region correction unit activates only when lane change is detected, transforming the static operation region into a dynamic one that adapts to actual lane geometry. This dynamic approach maintains simplicity during normal operation while achieving high accuracy when lane transitions occur
2Measurement precision
If the operation region is continuously adjusted to match lane shape, then the operation region accuracy is improved, but the system complexity and computational load increase
Solution Approach 1:
The system performs operation region correction periodically based on lane change events rather than continuously. The lane change detection unit triggers the correction process only when necessary, creating a periodic action pattern that maintains high accuracy at lane transitions while minimizing computational load during steady-state driving, thus balancing accuracy with system complexity
Solution Approach 2:
The system prepares lane information in advance through the lane change detection unit, which monitors and detects lane changes before they affect the operation region. By detecting lane changes preliminarily and triggering corrections proactively, the system ensures accurate operation regions are ready when needed without requiring continuous complex adjustments
Data Source
AI summary
A driving assist apparatus that performs, in accordance with periphery monitoring information of an own vehicle acquired from a periphery monitoring apparatus, a driving assist operation of the own vehicle. The driving assist apparatus is provided with a travelling locus calculation unit that calculates a travelling locus of the own vehicle; an operation region calculation unit that calculates an operation region in the vicinity of the own vehicle; a lane change detection unit that detects a lane change of the own vehicle; an operation region correction unit that corrects the operation region based on lane information related to a traffic lane after the lane change of the own vehicle; and an operation determination unit that determines, when an object is detected in the operation region, whether the driving assist operation needs to be activated based on the periphery monitoring information.