Vehicle Lane Detection Tip End Position Monitoring
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Solution Overview
Problem
Existing driving support apparatuses often erroneously detect vehicles cutting into a lane, leading to unnecessary alerts and driving support actions, such as automatic braking, when a vehicle approaching from an adjacent lane does not actually move into the present lane.
Innovation Solution
A driving support apparatus that determines whether a vehicle is moving into the present lane by monitoring the tip end lateral position and predicting its movement, using a combination of radar and imaging data to accurately assess if the vehicle is cutting in or staying in its own lane, thereby avoiding unnecessary support controls.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the driving support apparatus determines cutting in based only on lateral distance and change in lateral distance, then the detection responsiveness is improved, but the accuracy deteriorates causing erroneous detection
Solution Approach 1:
The patent transitions from two-dimensional lateral distance measurement to three-dimensional spatial positioning by detecting the lateral position of the tip end portion of the other vehicle. This additional dimensional information (tip end position vs. center position) enables more accurate determination of whether the vehicle is actually cutting in or merely approaching, resolving the contradiction between fast detection and accurate detection.
2Reliability
If the driving support apparatus issues alert or performs automatic braking when other vehicle approaches from adjacent lane, then the safety is improved, but the unnecessary control actions increase
Solution Approach 1:
The system continuously monitors the lateral position of the tip end portion of the other vehicle and uses this feedback to dynamically adjust the driving support control. By comparing the tip end lateral position with the present lane boundary, the system provides accurate feedback on whether cutting in is occurring, enabling appropriate control actions only when necessary and avoiding unnecessary alerts or braking.
Data Source
AI summary
A driving support apparatus mounted on a vehicle, performing a driving support control includes: other vehicle determining unit that determines whether the other vehicle moves towards a present lane where the own vehicle runs from an adjacent lane; an acquiring unit that acquires a tip end lateral position of other vehicle in the present lane side, among lateral positions of the other vehicle in a direction perpendicular to a travelling direction of the own vehicle; an object determination unit that determines, based on a movement or a predicted movement of the tip end lateral position into the present lane from the adjacent lane, the other vehicle to be an object of a driving support control, and determining, based on no-movement of the tip end lateral position, the other vehicle not to be an object of a driving support control.