Vehicle Reverse Assist Path Tracking With Obstacle-Aware Steering

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Solution Overview

Problem

Drivers face difficulties in reversing vehicles due to the need to manipulate the steering wheel while checking rearview mirrors and rearview cameras, and the different trajectories between forward and backward driving, which requires skill and attention to avoid obstacles.

Innovation Solution

A method and apparatus for backward driving assist that includes sensors for real-time location determination, object detection, and control units for speed and steering, allowing for precise path tracking and curvature consideration, with the ability to store forward driving trajectories for backward driving.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the driver manually checks rearview mirrors and rearview camera while manipulating the steering wheel, then the driver can monitor the reverse path and obstacles, but the driving operation becomes complex and requires high skill and attention

Engineering Contradiction:

Improvesafety of backward drivingVSAvoidease of backward driving

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The system enables the vehicle to perform self-monitoring and self-steering during backward driving. Sensors automatically detect obstacles and the control unit autonomously adjusts steering and speed, freeing the driver from manual monitoring tasks while maintaining safety through automated surveillance and control mechanisms.

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The patent replaces manual mechanical steering operations with an automated control system that uses sensors to detect obstacles and a control unit to automatically adjust steering angle and vehicle speed. This substitution eliminates the need for the driver to manually coordinate steering with visual monitoring, significantly reducing operational complexity.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Measurement precision

If the driver checks multiple elements (rearview mirror, side-view mirror, rearview camera) to monitor the reverse path, then obstacle detection capability is improved, but the time and attention required for safe backward driving increases

Engineering Contradiction:

Improveobstacle detection accuracyVSAvoidtime required for backward driving

Core Design Contradiction:

Measurement precisionVSLoss of time

Solution Approach 1:

The system merges multiple detection functions into a single integrated sensor system. Instead of requiring the driver to manually check multiple mirrors and cameras, the patent combines obstacle detection, distance measurement, and path monitoring into one automated sensor array that continuously surveils the reverse path, providing comprehensive monitoring simultaneously without requiring sequential driver attention.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The automated sensor system provides continuous monitoring of the reverse path without interruption or requiring periodic driver checks. The sensors continuously detect obstacles and track their movement, maintaining constant surveillance of the backward driving environment, which eliminates the time loss associated with intermittent manual checking by the driver.

Inventive Principle:

Principle #20Continuity of useful action

3Measurement precision

If the system uses multiple location estimation technologies, then the accuracy of location determination is improved, but the device complexity increases

Engineering Contradiction:

Improvelocation determination accuracyVSAvoidcomplexity of sensor system

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The control unit serves multiple functions: it processes data from various sensors, determines vehicle location, calculates reverse paths, controls steering mechanisms, and regulates vehicle speed. By making the control unit multi-functional, the system achieves high location determination accuracy through multiple sensing methods without proportionally increasing overall system complexity, as one component performs diverse tasks.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The control unit acts as an intermediary that integrates information from multiple sensors (GPS, inertial sensors, wheel speed sensors) and reconciles their data to determine accurate vehicle location. This intermediary processing consolidates the complexity of multiple sensing technologies into a single coordination point, managing the integration of diverse data sources without requiring separate complex systems for each function.

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentUS12515665B2Method and apparatus for backward driving assist of vehicle

Publication Date: 2026.01.06 HYUNDAI MOBIS CO LTD

AI summary

A method and apparatus for backward driving assist of a vehicle, the method comprises: obtaining first coordinate information for the real-time location of the vehicle; detecting an object around the vehicle, and obtaining second coordinate information for the real-time location of the vehicle; determining a location of the vehicle based on the first and second coordinate information; and performing backward driving assist control based on the determined location of the vehicle.