Lane Departure Warning Calibration for Trailer Width
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Solution Overview
Problem
Existing lane departure warning (LDW) systems are not capable of calibrating for vehicles towing trailers with wider widths or equipped with non-standard side view mirrors, leading to inadequate detection of unintentional lane departures.
Innovation Solution
A method and system that allow vehicle operators to calibrate LDW systems based on the width of the trailer or extended side view mirrors, using trailer detectors, lane boundary detectors, and information processors to generate calibration parameters for determining unintended lane departures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the LDW system uses the vehicle's original width calibration, then the system is simple and reliable for standard vehicles, but it fails to accurately detect lane departures when a wider trailer or extended mirrors are attached
Solution Approach 1:
The LDW system dynamically adjusts the calibration width parameter based on detected conditions. When a trailer or extended mirrors are detected, the system automatically switches from the vehicle's original width calibration to an adjusted width calibration, making the system adaptable to different operational configurations without requiring manual reconfiguration
Solution Approach 2:
The system changes the calibration parameter (width) from the vehicle's original width to an adjusted width that accounts for the trailer or extended mirrors. This parameter change allows the LDW system to maintain accurate lane departure detection despite the increased overall width of the vehicle-trailer-mirror combination
2Reliability
If the LDW system is calibrated for the vehicle's original width, then the calibration is straightforward and reliable for standard configurations, but it provides inadequate detection when towing wider trailers
Solution Approach 1:
The LDW system is designed to serve multiple functions: it can operate with the vehicle's original width calibration for standard driving conditions, and switch to an adjusted width calibration when trailers or extended mirrors are detected. This multi-functionality ensures reliable lane departure detection across diverse operational scenarios
Solution Approach 2:
The system dynamically adapts its calibration based on the detected configuration. When a trailer or extended mirrors are detected, the system transitions from a fixed vehicle-width calibration to a dynamic adjusted-width calibration, ensuring continued reliability in lane departure detection despite changes in the vehicle's effective width
Data Source
AI summary
A lane departure warning system has a trailer detector for detecting that a trailer is attached to a vehicle, a lane boundary detector for detecting a position of a lane boundary on a roadway over which the vehicle is travelling, and an information processor including a calibrator for generating calibration parameters used in determining an unintended lane departure event with respect to the lane boundary. The information processor initiates a process for allowing a vehicle operator to provide trailer width information when the trailer detector indicates that the vehicle has the trailer attached thereto. The trailer width information is used by the information processor for generating the calibration parameters as a function of a width of the trailer.