Trailer Coupler Detection Using Rear Camera and Neural Networks

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Solution Overview

Problem

Guiding a vehicle to attach a trailer is challenging due to limited rearview visibility, requiring manual adjustments and external assistance, which is inconvenient.

Innovation Solution

An apparatus and method using a rear-facing camera and convolutional neural networks to detect the trailer coupler, estimate its position, and guide the vehicle by displaying distance and positional information, allowing for precise alignment.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If manual adjustments and external assistance are used to guide vehicle-to-trailer alignment, then the attachment process can be completed, but the operation becomes inconvenient and time-consuming

Engineering Contradiction:
Improveease of vehicle-to-trailer alignmentVSAvoidtime for attachment process
Core Design Contradiction:
Ease of operationVSLoss of time

Solution Approach 1:

The system enables the vehicle to autonomously detect and align with the trailer coupler using rear-facing cameras and convolutional neural networks. The vehicle performs self-guidance by automatically processing visual data to determine coupler position and distance, eliminating the need for external assistants or manual trial-and-error adjustments.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The patent replaces manual mechanical alignment operations with an automated visual recognition system. Instead of relying on human operators to visually estimate distances and positions, the system uses image processing algorithms to automatically detect the coupler and calculate alignment parameters, substituting mechanical human judgment with computational analysis.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

2Measurement precision

If multiple convolutional neural networks are used to detect coupler position at different distances, then detection accuracy is improved, but device complexity increases

Engineering Contradiction:
Improvecoupler position detection accuracyVSAvoidcomplexity of neural network system
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The detection system is divided into multiple specialized convolutional neural networks, each trained to detect couplers at specific distance ranges. By segmenting the detection task into distance-specific modules, the system achieves high precision for each range while keeping individual network complexity manageable. Each network focuses on a specific spatial zone, improving overall accuracy without requiring a single overly complex model.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

Multiple convolutional neural networks are deployed that can collectively handle various detection scenarios. The system uses a family of networks that work together to provide universal coupler detection capability across different distances and lighting conditions, where each network serves a specific function but collectively they provide comprehensive coverage.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Data Source

PatentUS10332002B2Method and apparatus for providing trailer information
Publication Date: 2019.06.25 GM GLOBAL TECHNOLOGY OPERATIONS LLC
  • US10332002B2 patent drawing
  • US10332002B2 patent drawing
  • US10332002B2 patent drawing

AI summary

A method and apparatus for providing trailer information are provided. The method includes detecting a p coupler of the trailer in the image of the rear-facing camera; detecting a position of the coupler in the received image; and determining a distance between the detected position of the coupler of the trailer and a hitch of vehicle. The method may be use to display information about a trailer coupler or guide a vehicle to line up a vehicle hitch to a trailer coupler.