Branching-Point Speed Control for Curved Exit Lane Deceleration
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional vehicle systems risk collisions and traffic obstruction when decelerating on main roads due to low curve safety speeds in exit lanes, especially when drivers divert from navigation-set curved lanes.
Innovation Solution
A vehicle control system that determines and adjusts speed based on main line speed limits, arc length to curved lanes, and allowable deceleration, using navigation information and sensors like cameras and radars to prevent unnecessary deceleration on main roads by identifying the lane and branching points, and applying appropriate accelerations to maintain safe speeds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the vehicle decelerates to a predetermined safe speed in the curved lane through the conventional curved road deceleration function, then the vehicle can safely navigate the curved lane, but the vehicle may collide with a following vehicle or obstruct traffic flow on the main road
Solution Approach 1:
The controller determines whether the vehicle has actually entered the curved lane before activating deceleration. By checking lane entry status in advance, the system prepares to decelerate only when appropriate, avoiding premature speed reduction that would cause traffic obstruction or collision risks on the main road
Solution Approach 2:
The deceleration function is applied locally only when the vehicle is confirmed to be in the curved lane, rather than universally on all roads. This selective application ensures safety measures are activated only where needed, maintaining normal traffic flow on main roads while ensuring safety in curved lanes
2Ease of operation
If the vehicle continues to travel on the main road by driver manipulation instead of entering the curved lane, then the driver maintains control and follows the intended route, but the conventional system still decelerates the vehicle as if entering the curved lane
Solution Approach 1:
The controller continuously monitors lane entry status and compares it with the navigation route information. When the vehicle remains on the main line despite navigation indicating a curved lane entry, the system detects this discrepancy and suppresses unnecessary deceleration, providing feedback-based adaptive speed control
Solution Approach 2:
The speed control system dynamically adjusts based on actual lane position and driver intent. When the vehicle is detected to be on the main line rather than entering the curved lane, the controller dynamically changes from deceleration mode to maintaining normal speed, adapting to real-time driving conditions
Data Source
AI summary
A vehicle includes a navigation device, and a controller electrically connected to the navigation device, wherein the controller is configured to determine a first speed of the vehicle based on a main line speed limit of a road on which the vehicle is traveling, wherein the main line speed limit is included in navigation information output by the navigation device, determine a second speed for decelerating the vehicle to a predetermined speed when the vehicle is positioned at a target point of a curved lane based on an arc length from a branching point of the road to the curved lane, which is determined based on the predetermined speed and a predetermined allowable maximum deceleration amount in the curved lane in route information included in the navigation information and the navigation information, and determine the first speed or the second speed as a control target speed of the vehicle at the branching point.