Driving Support Apparatus Roadside Width Detection
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Solution Overview
Problem
Existing driving support systems may incorrectly recognize patterns of walls or guardrails as lane lines, leading to inappropriate estimation of the driving lane and potential unsafe vehicle positioning close to the road edge.
Innovation Solution
A driving support apparatus incorporating an in-vehicle camera, radar device, and a determination unit that sets a predetermined vehicle position based on the width of the roadside detected by the radar and lane lines, adjusting the position to maintain the vehicle at a safe distance from the road edge when the detected width is narrower than a predetermined threshold.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If lane lines are detected from image information captured by a camera, then the driving lane can be estimated, but roadside features such as walls or guardrails may be erroneously recognized as lane lines leading to inappropriate driving lane estimation
Solution Approach 1:
The patent combines camera-based lane line detection with radar-based roadside detection to create a more reliable driving lane estimation system. By merging the detection results from both sensors and comparing them, the system can distinguish between actual lane lines and roadside features, preventing erroneous recognition while maintaining accurate lane detection.
2Ease of operation
If the vehicle maintains position based on detected lane lines, then driving support is provided, but the vehicle may travel at an inappropriate position closer to the road edge when lane lines are erroneously detected
Solution Approach 1:
The system uses feedback from both camera and radar detection results to verify the accuracy of lane line detection before providing driving support. By continuously comparing the detected lane lines with the detected roadside position, the system can identify and correct erroneous detections, ensuring that driving support is only provided when the lane estimation is reliable and safe.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Prevents the vehicle from traveling too close to the actual road edge by accurately differentiating between lane lines and roadside features, ensuring appropriate driving support and safety.
Implementation Method 1
a radar device for transmitting probing waves to an area ahead of the own vehicle in its traveling direction, and receiving reflected waves
Implementation Method 2
transmitting probing waves to an area ahead of the own vehicle in its traveling direction, and receiving reflected waves
Data Source
AI summary
A detection ECU detects left and right lane lines that define a driving lane from an image captured by an in-vehicle camera, by detecting a roadside as a side of a road where the own vehicle travels, from information of reflected waves received from a radar device. The detection ECU determines whether an estimated width indicating the width of a detected roadside and a detected lane line on a roadside side is narrower than the predetermined width. When the detection ECU determines that the estimated width is narrower than the predetermined width, it sets the predetermined position to be a position distant from the lane line on a roadside side in the estimated driving lane, than when the estimated width is determined not to be narrower than the predetermined width.