Park Exit Assist System Using Virtual No-Entry Zone

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Solution Overview

Problem

Existing park exit assist systems struggle to reliably avoid obstacles like curbs and ditches without increasing vehicle equipment, as they require additional sensors to detect these features.

Innovation Solution

A park exit assist system that uses an electronic control unit to set an imaginary line on the opposite side of the vehicle's exit direction, designating an area beyond it as a no-entry zone, and controls the vehicle to avoid entering this area, thereby preventing collisions with obstacles without adding new sensors.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If additional sensors are added to detect curbs and ditches, then the reliability of obstacle avoidance is improved, but the device complexity and equipment cost increase

Engineering Contradiction:

Improveobstacle avoidance reliabilityVSAvoidvehicle equipment complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent creates a virtual copy of the physical environment by generating an imaginary line and no-entry area based on the parking area boundaries. This virtual representation allows the system to avoid obstacles without requiring additional physical sensors, resolving the contradiction between reliability and device complexity

Inventive Principle:

Principle #26Copying

Solution Approach 2:

The patent introduces an intermediary computational model (imaginary line and no-entry area) that mediates between the existing sensor data and the vehicle control system. This intermediary allows obstacle avoidance functionality to be achieved without directly adding new sensors, maintaining simplicity while improving reliability

Inventive Principle:

Principle #24Intermediary (Mediator)

2Speed

If the vehicle exits the parking area by moving forward, then the exit speed is improved, but the risk of collision with obstacles on the opposite side increases

Engineering Contradiction:

Improvevehicle exit speedVSAvoidcollision risk

Core Design Contradiction:

SpeedVSObject-affected harmful factors

Solution Approach 1:

The patent adds a virtual dimension to the control space by introducing an imaginary line and no-entry area that extends beyond the physical parking area boundaries. This allows the vehicle to move forward at higher speeds while the virtual boundaries provide an additional layer of safety control, resolving the contradiction between speed and collision risk

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

Data Source

PatentUS9481368B2Park exit assist system and park exit assist method

Publication Date: 2016.11.01 AISIN SEIKI KK

AI summary

A park exit assist system includes an electronic control unit. The electronic control unit is configured to, at a time of assisting in moving a vehicle parallel parked in a parking area out of the parking area, set an imaginary line at a boundary at a predetermined position on a side in a direction, which is opposite to a direction in which the vehicle is moved out of the parking area, on the basis of a position of the vehicle at a start of assisting in moving the vehicle out of the parking area, set an area beyond the imaginary line for a no-entry area, and execute control for assisting in moving the vehicle out of the parking area such that the vehicle does not enter the no-entry area.