Vehicle Control for S-Shaped Road Recognition Errors
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Solution Overview
Problem
Existing automated driving technologies fail to accurately distinguish between straight roads and 'S'-shaped curved roads, leading to inappropriate deceleration control when misrecognition occurs, even when the vehicle is traveling on a straight road.
Innovation Solution
A vehicle control device and method that judges whether map road partition lines represent an 'S'-shaped road by checking the distance and curvature changes, inhibiting traveling control corresponding to a curved road if the 'S'-shaped road candidate is not confirmed, ensuring appropriate straight-line travel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If map road partition lines are used for automated driving control, then traveling control can be performed based on pre-stored map information, but misrecognition may occur where straight roads are incorrectly identified as 'S'-shaped curved roads leading to inappropriate deceleration control
Solution Approach 1:
The patent applies parameter changes by introducing specific geometric parameters (distance between start and end points of the partition line, curvature values at multiple points) to differentiate between straight roads and 'S'-shaped curved roads. By evaluating these parameters against predetermined thresholds, the system accurately identifies road types and prevents misrecognition, thereby maintaining reliable automated driving control.
2Productivity
If road partition lines are recognized from map information, then traveling control can be executed based on map data, but inappropriate deceleration control occurs when straight roads are misrecognized as curved roads
Solution Approach 1:
The patent implements feedback by continuously evaluating geometric parameters of road partition lines and comparing them against expected characteristics of straight versus curved roads. This feedback mechanism allows the system to correct potential misrecognition errors before executing traveling control, ensuring that deceleration control is appropriate and matches the actual road geometry.
3Ease of operation
If curved road traveling control is applied based on misrecognized map partition lines, then the system executes deceleration control, but this causes inappropriate control on straight roads where no deceleration is needed
Solution Approach 1:
The patent applies preliminary action by evaluating the geometric parameters of road partition lines in advance before executing any traveling control. By pre-identifying whether the road is straight or curved based on partition line characteristics, the system prepares the appropriate control strategy beforehand, preventing inappropriate deceleration on straight roads while ensuring proper curved road control is applied when needed.
Data Source
AI summary
A vehicle control device including: a storage medium storing instructions that are able to be read by a computer; and a processor connected to the storage medium, in which, by executing instructions that are able to be read by the computer, the processor: judges whether or not an “S”-shaped road candidate that is a partition represented by map road partition lines based on map information stored in a storage unit represents an “S”-shaped road; and performs traveling control of a vehicle on the basis of the map road partition lines, the processor judges that the “S”-shaped road candidate is not an “S” shaped road in a case in which a distance between a start point and an end point of the “S”-shaped road candidate is a first threshold or less, and the processor inhibits traveling control of the vehicle corresponding to a curved road in a case in which it is judged that the “S”-shaped road candidate is not an “S”-shaped road.