Rear Lateral Sensing System for Accurate Obstacle Warning

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Solution Overview

Problem

Conventional rear cross traffic alert systems inaccurately generate warning signals due to interference from surrounding vehicles or obstacles, and fail to maintain warnings until the target vehicle completely exits the warning area.

Innovation Solution

A rear lateral sensing system that includes sensors to detect obstacles, a warning transmission device to generate signals, a determination device to calculate signal duration based on obstacle location, and a controller to adjust signal timing and monitoring points, ensuring accurate warnings until the obstacle completely leaves the monitoring area.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Speed

If the conventional RCTA targets the front portion of the target vehicle, then the warning signal can be generated quickly, but the warning signal is turned off even when the target vehicle has not completely passed by

Engineering Contradiction:

Improvewarning signal generation speedVSAvoidwarning signal accuracy

Core Design Contradiction:

SpeedVSReliability

Solution Approach 1:

The system pre-sets multiple monitoring points along the path of the target vehicle (front portion, lateral portion, rear portion) before the vehicle actually passes. This allows the system to prepare for continuous monitoring and maintain the warning signal throughout the entire passage of the target vehicle, rather than reacting only when the front portion is detected.

Inventive Principle:

Principle #10Preliminary action

2Device complexity

If the system monitors only the front portion of the target vehicle, then the system complexity is reduced, but the system cannot accurately determine when the obstacle completely exits the warning area

Engineering Contradiction:

Improvemonitoring system complexityVSAvoidobstacle exit detection accuracy

Core Design Contradiction:

Device complexityVSMeasurement precision

Solution Approach 1:

The monitoring system divides the target vehicle into multiple segments or portions (front portion, lateral portion, rear portion) and assigns specific monitoring points to each segment. This segmentation allows the system to track the complete passage of the vehicle through the warning area by monitoring each portion sequentially, improving detection accuracy without requiring a single complex monitoring mechanism.

Inventive Principle:

Principle #1Segmentation

3Area of stationary object

If surrounding vehicles or obstacles are present in the vicinity, then the monitoring area coverage is increased, but the identification of the target vehicle is interfered with

Engineering Contradiction:

Improvemonitoring area coverageVSAvoidtarget vehicle identification accuracy

Core Design Contradiction:

Area of stationary objectVSReliability

Solution Approach 1:

The system uses the concept of a determination area as an intermediary zone between the broad monitoring area and the target vehicle identification process. By setting specific determination points within the monitoring area and using these as intermediate reference points, the system can distinguish the target vehicle from surrounding obstacles more accurately, reducing false identifications while maintaining comprehensive monitoring coverage.

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentUS20220185309A1Rear lateral sensing system and method of vehicle

Publication Date: 2022.06.16 HYUNDAI MOBIS CO LTD

AI summary

The present disclosure discloses a system and a method of rear lateral sensing of a vehicle for providing an accurate warning signal by transmitting a warning signal against an obstacle when the obstacle is present on a rear lateral side of the vehicle and accurately determining whether the obstacle completely exits from a warning area.