Road Surface Stop Position Projection for Autonomous Parking Exit

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Solution Overview

Problem

During autonomous driving, users face challenges in accurately recognizing the stop position of a vehicle leaving a parking lot, as the information processing device may not accurately display the actual stop position set by the user.

Innovation Solution

A vehicle control device that includes a route generating unit to create a parking lot leaving route based on sensor data, a communication control unit to transmit and receive stop position information, and a projection control unit to project light onto the road surface corresponding to the stop position, ensuring accurate notification of the stop position.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of information

If a stop position is displayed on an information processing device, then the user can set a stop position for the vehicle, but the user cannot accurately recognize the actual stop position

Engineering Contradiction:
Improvestop position informationVSAvoidstop position recognition accuracy
Core Design Contradiction:
Loss of informationVSMeasurement precision

Solution Approach 1:

The patent introduces a light projection as an intermediary element between the information processing device and the road surface. The light projects the stop position information onto the road, creating a visual marker that the user can directly see at the actual location, thereby accurately recognizing the stop position without relying solely on the information processing device display

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent transitions the stop position information from a two-dimensional display on the information processing device to a three-dimensional visual projection on the road surface. This dimensional change allows the user to perceive the exact stop position in the physical space where the vehicle will stop, improving recognition accuracy

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

2Extent of automation

If autonomous driving control is implemented, then the vehicle can leave the parking lot automatically, but the user cannot accurately recognize where the vehicle will stop

Engineering Contradiction:
Improveautonomous driving capabilityVSAvoidstop position notification
Core Design Contradiction:
Extent of automationVSLoss of information

Solution Approach 1:

The patent implements a feedback mechanism where the stop position information is projected onto the road surface at the actual stop location. This provides visual feedback to the user about where the autonomous vehicle will stop, allowing the user to verify and recognize the stop position accurately before the vehicle arrives

Inventive Principle:
Principle #23Feedback

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

The solution accurately notifies the stop position of a vehicle leaving a parking lot by autonomous driving, enhancing user recognition and safety through visual projection of the stop position on the road surface.

Implementation Method 1

a projection control unit that projects light emitted from a light source onto a position on a road surface corresponding to the stop position

Methodology Applied
Scientific EffectLight projection: Light

Data Source

PatentEP4289704A1Vehicle control device and vehicle control system
Publication Date: 2023.12.13 FSVAP JAPAN CO LTD
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AI summary

PROBLEM To provide a vehicle control device capable of accurately notifying a stop position of a vehicle leaving a parking lot by autonomous driving. RESOLUTION MEANS A vehicle control device 270 includes: a route generating unit 294 that generates a parking lot leaving route of a vehicle based on sensing results of a sensor group 230 mounted on the vehicle; a communication control unit 295 that transmits the parking lot leaving route to an information processing device and receives a stop position where the vehicle stops from the information processing device; and a projection control unit 296 that projects light emitted from a light source 261 at a position on a road surface corresponding to the stop position.