Camera Mirror Sway Detection With Targeted Trailer Braking
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Solution Overview
Problem
Existing systems for detecting and mitigating trailer sway in heavy-duty vehicles are inadequate, particularly when relying on traditional mirrors, as they require driver attention and do not effectively utilize camera-based systems for continuous monitoring and responsive actions.
Innovation Solution
A camera-based system is used to monitor the trailer's sway by analyzing the position of its trailing edge over time, detecting sway through image analysis, and applying targeted braking to reduce sway, with individualized braking forces applied to trailers based on weight distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional mirrors are used for detecting trailer sway, then the driver can observe the trailer position, but the driver's attention is required and continuous monitoring is difficult
Solution Approach 1:
The patent replaces the mechanical mirror system with an optical camera-based detection system. The camera captures images of the trailer, and image processing algorithms automatically analyze the trailer's position and detect sway, eliminating the need for driver observation through mirrors.
Solution Approach 2:
The system enables automatic detection and mitigation of trailer sway without requiring driver intervention. The camera continuously monitors the trailer, the processor automatically analyzes the images to detect sway, and the braking system autonomously applies corrective braking forces.
2Extent of automation
If camera-based systems are used for continuous monitoring, then automated detection is achieved, but system complexity increases
Solution Approach 1:
The camera system serves multiple functions: it captures images for sway detection, provides visual information for trailer positioning, and enables automated analysis through image processing algorithms. This multi-functionality justifies the system complexity by delivering comprehensive automation capabilities.
3Reliability
If targeted braking is applied to reduce trailer sway, then sway mitigation effectiveness is improved, but braking system control complexity increases
Solution Approach 1:
The braking system applies localized braking forces to specific wheels based on the detected sway characteristics. Rather than uniform braking, the system selectively applies braking forces to individual wheels or axles, optimizing sway mitigation while managing control complexity through targeted intervention.
Data Source
AI summary
Embodiments are presented herein for trailer sway detection and mitigation using a camera mirror system. In one embodiment, a vehicle controller is provided comprising: one or more processors; a non-transitory computer-readable medium; and program instructions stored on the non-transitory computer-readable medium. When executed by the one or more processors, the program instructions cause the one or more processors to: monitor images captured by at least one image capture device to detect sway of a trailer being towed by a tractor; and in response to detecting sway of the trailer, cause a braking system to apply a brake to attempt to reduce to the sway of the trailer.