Vehicle Optical Guide Line Projection for Intersection Turning
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Solution Overview
Problem
Drivers of vehicles turning at intersections face difficulty in accurately recognizing turn guide lines, especially when they are blurred or limited to inner lanes, leading to increased anxiety and risk of collision due to unclear turning paths.
Innovation Solution
A driving control method and system that determines the need for virtual optical guide lines based on the state of turn guide lines at an intersection and controls the host vehicle to radiate these lines using light, ensuring they are visible on both sides of the driving lane or adjacent lanes, using ADAS sensors and light radiation tools to enhance path recognition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If turn guide lines are drawn on the road surface, then drivers can recognize turning paths, but the guide lines become blurred and difficult to visually discern
Solution Approach 1:
The patent introduces an intermediary system (optical guide line radiation system) between the road surface turn guide lines and the driver's vision. This system projects optical guide lines onto the road surface using projectors mounted on vehicles, serving as a mediator to enhance the visibility and clarity of turning paths when traditional painted guide lines are insufficient or blurred.
Solution Approach 2:
The patent replaces the static mechanical system of painted road guide lines with a dynamic optical projection system. Instead of relying on fixed painted lines that become blurred over time, the system uses projectors to dynamically generate clear optical guide lines that can be adjusted and renewed, substituting the mechanical painting system with an optical projection system.
2Device complexity
If turn guide lines are drawn only at the side of the innermost lane, then the road surface is simpler, but drivers in outer lanes cannot accurately recognize turning paths
Solution Approach 1:
The patent makes the optical guide line radiation system universal by enabling all vehicles to project guide lines, not just those in the innermost lane. This multi-functional approach allows drivers in any lane position to generate and see their own turning path guide lines, making the system applicable to all lane positions rather than being limited to specific lanes.
Solution Approach 2:
The patent adds a new dimension to turn guide line provision by projecting optical lines in three-dimensional space above and on the road surface, rather than relying solely on two-dimensional painted lines on the road. This dimensional addition allows guide lines to be visible to drivers in outer lanes who would otherwise have poor visibility of inner lane markings.
3Ease of operation
If drivers cannot accurately recognize turning paths, then physiological anxiety and burden increase, but collision risk also increases
Solution Approach 1:
The patent implements feedback by having drivers' own vehicles project optical guide lines that directly correspond to their intended turning path. This creates immediate visual feedback that confirms the correct trajectory, reducing uncertainty and anxiety. The system provides real-time visual confirmation of the turning path, allowing drivers to self-regulate their steering based on the projected guide lines.
Solution Approach 2:
The patent applies preliminary action by projecting the optical guide lines before the driver completes the turn, showing the intended path in advance. This allows the driver to plan and execute the turn with confidence, knowing the correct path is already visualized, thereby reducing both psychological burden and the risk of deviating from the safe path.
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 reduces driver anxiety and the risk of lane invasion by providing clear visual cues for turning, thereby preventing collisions by ensuring drivers can accurately follow the turning path.
Implementation Method 1
controlling the host vehicle to radiate optical guide lines on a road surface requiring generation of the virtual guide lines, using light
Data Source
AI summary
A driving control method for vehicles includes: determining, by a controller, whether virtual guide lines need to be generated, based on a state of turn guide lines disposed at sides of a host vehicle when the host vehicle enters an intersection and drives while turning; and controlling, by the controller, the host vehicle to radiate optical guide lines on a road surface requiring generation of the virtual guide lines, using light, in response to determining that the virtual guide lines need to be generated.