Parking Light Projection for Straight Vehicle Alignment at Walls
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Solution Overview
Problem
Existing parking assistance systems for vehicles do not effectively allow for precise alignment of the vehicle's longitudinal axis with the wall surface during parking, and they lack a reliable method to ensure the vehicle is parked straight.
Innovation Solution
A method that projects a light marking onto a wall surface using a lighting device, where the light marking's geometry is determined based on three-dimensional structures on the wall surface, allowing the marking border to align with the structure border as the vehicle approaches, thus aiding in both distance and alignment control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Difficulty of detecting and measuring
If sensors and cameras are used to detect obstacles and provide live images, then the detection capability is improved, but the ability to ensure precise alignment and straight parking is deteriorated
Solution Approach 1:
The patent uses light markings with different colors or brightness levels to indicate alignment status. The lighting device projects visual cues that change based on the vehicle's position and orientation relative to the parking space, enabling the driver to intuitively understand alignment requirements without complex sensor data interpretation.
Solution Approach 2:
The patent introduces light markings as an intermediary between the vehicle and the parking space. These markings serve as a visual mediator that translates the complex spatial relationship into simple, understandable patterns that guide the driver's steering and positioning actions.
2Loss of information
If multiple light markings are projected to indicate parking position, then the guidance information is improved, but the visual clarity and ease of interpretation is deteriorated
Solution Approach 1:
The patent divides the light marking into distinct segments or zones, each conveying specific information about parking alignment. Rather than using a single complex marking, the system projects multiple simplified light patterns that collectively provide comprehensive guidance while remaining individually easy to interpret.
Solution Approach 2:
The patent projects light markings only in the specific regions where alignment information is needed, rather than illuminating the entire parking area. This partial action approach provides sufficient guidance information while avoiding visual overload from excessive lighting.
Data Source
AI summary
The present disclosure relates to a method for supporting a parking process of a motor vehicle by projecting a light marking by means of a lighting device onto a wall surface visible to the person parking. At least one image of a wall surface is taken. The at least one image is analyzed to ascertain a three-dimensional structure shown in or on the wall surface. Then, a light marking is determined such that it has a marking border that is a negative of the structure border. Finally, the light marking is projected onto the wall surface, wherein the position of the marking border changes relative to the structure border depending on the distance or position of the vehicle.