Parking Assist Direction Switch Stop for Pedestrian Safety

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Solution Overview

Problem

Existing parking assistance devices do not adequately address the safety risks to pedestrians when a vehicle switches directions during parking, as they may incorrectly predict the vehicle's movement, leading to potential collisions.

Innovation Solution

A parking assistance device that temporarily stops the vehicle at a predetermined point when most of the vehicle has entered the parking spot, prompting the driver to check surroundings for safety before continuing the parking process, using sensors and a processor to control vehicle movement and provide safety alerts.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If the vehicle switches direction from reversing to forwarding to optimize lateral position during parking, then the parking accuracy is improved, but the safety risk to pedestrians increases

Engineering Contradiction:
Improveparking accuracyVSAvoidsafety risk to pedestrians
Core Design Contradiction:
Manufacturing precisionVSObject-affected harmful factors

Solution Approach 1:

The system performs preliminary safety verification by detecting pedestrians in the potential movement path before the vehicle switches direction from reversing to forwarding. This advance detection and warning allows pedestrians to take evasive action before the hazardous movement occurs, thus enabling accurate parking optimization while mitigating safety risks.

Inventive Principle:
Principle #10Preliminary action

2Productivity

If the vehicle continues moving toward the inside of the parking spot without stopping, then the parking efficiency is improved, but the risk of collision with pedestrians increases

Engineering Contradiction:
Improveparking efficiencyVSAvoidcollision risk
Core Design Contradiction:
ProductivityVSObject-affected harmful factors

Solution Approach 1:

The system continuously monitors the environment during parking maneuvers and provides real-time feedback through warning signals when pedestrians are detected in the vehicle's potential movement path. This feedback mechanism allows the system to maintain high parking efficiency by only interrupting movement when actually necessary for safety, rather than implementing continuous stopping.

Inventive Principle:
Principle #23Feedback

3Object-affected harmful factors

If the vehicle stops temporarily at the predetermined point before switching direction, then the safety of pedestrians is improved, but the parking time increases

Engineering Contradiction:
Improvepedestrian safetyVSAvoidparking time
Core Design Contradiction:
Object-affected harmful factorsVSLoss of time

Solution Approach 1:

The system performs preliminary safety verification by detecting pedestrians in the potential movement path before the vehicle switches direction. This advance detection allows the system to maintain continuous movement when safe, only interrupting when necessary, thus minimizing time loss while ensuring pedestrian safety.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The continuous environmental monitoring and real-time warning system allows the vehicle to maintain high-speed parking maneuvers when safe, only decelerating or stopping when pedestrians are detected. This feedback-based approach minimizes unnecessary stopping time while ensuring safety.

Inventive Principle:
Principle #23Feedback

Data Source

PatentUS20250346221A1Parking assistance device
Publication Date: 2025.11.13 TOYOTA JIDOSHA KK
  • US20250346221A1 patent drawing
  • US20250346221A1 patent drawing
  • US20250346221A1 patent drawing

AI summary

The processor of the parking assistance device is configured to, in a predetermined scene where the processor controls the own vehicle to travel toward the inside of the parking spot and reach a predetermined point, and subsequently controls the own vehicle to travel from the predetermined point toward the outside of the parking spot, when a proportion of a portion of the own vehicle that has entered the parking spot relative to the entire own vehicle exceeds a threshold at the predetermined point, control the own vehicle to stop at the predetermined point; and when the processor detects that a driver of the own vehicle has executed a predetermined operation while the own vehicle is stopped at the predetermined point, control the own vehicle to travel toward the outside of the parking spot.