Trailer Lane Departure Warning with Dual Thresholds
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Solution Overview
Problem
Existing lane departure warning systems fail to effectively warn drivers when a vehicle is towing a trailer, as they only consider the vehicle's position within the lane and do not account for the trailer's proximity to the lane boundaries, leading to potential trailer lane departure without adequate warning.
Innovation Solution
A lane departure warning system that includes a camera to capture road images, a processor to detect lane boundaries and determine distances and times to lane crossing for both the vehicle and trailer, and a human-machine interface to provide warnings via audio, visual, or haptic feedback, specifically tailored for vehicles towing trailers by adjusting thresholds and warning mechanisms based on trailer presence and dimensions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the lane departure warning system only monitors the vehicle's position within the lane, then the system complexity is reduced, but the system fails to detect trailer lane departure
Solution Approach 1:
The system divides the monitoring task into separate components: vehicle position monitoring and trailer position monitoring. The controller independently calculates vehicle-to-boundary distance and trailer-to-boundary distance, allowing each component to be optimized separately while improving overall reliability without excessive complexity
Solution Approach 2:
The existing lane departure warning system is enhanced to perform dual functions: monitoring both the vehicle and the trailer. By adding trailer-specific detection capabilities to the existing vehicle monitoring system, the system achieves multi-functionality without requiring completely separate systems, thus managing complexity
2Measurement precision
If the system uses a single threshold for lane departure warning, then the ease of operation is improved, but the accuracy of warning for both vehicle and trailer is reduced
Solution Approach 1:
The system applies different threshold values for vehicle lane departure and trailer lane departure warnings. By tailoring the threshold to the specific object being monitored (vehicle vs. trailer), the system achieves higher measurement precision and warning accuracy for each case
Solution Approach 2:
The system dynamically adjusts the threshold parameter based on whether a vehicle threshold or trailer threshold is being applied. This parameter change allows the system to optimize warning accuracy for different objects while the controller automatically manages the complexity of having multiple thresholds
Data Source
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AI summary
A system is provided for supporting lane assist functions for a vehicle towing a trailer. The system includes performing lane departure warning and lane centering assist functions that operate differently when the presence of a trailer is detected. The system warns the driver if either the vehicle or trailer will depart the lane, using different warnings for the vehicle and trailer. The system further provides lane centering assist functions that operate to center the vehicle and trailer together. Corresponding methods are also provided.