Road Surface Drawing Device Adaptive Color Control
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Solution Overview
Problem
Existing road surface drawing devices struggle to ensure that the color of projected patterns is easily recognizable under varying environmental conditions, leading to ineffective information conveyance due to difficulty in identifying the drawing color.
Innovation Solution
A road surface drawing device equipped with a brightness detector and controller that adjusts the drawing color based on surrounding conditions, switching between colored and achromatic modes to enhance visibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If a colored pattern is projected onto the road surface, then information can be more effectively conveyed to viewers, but the drawing color may become difficult to recognize depending on surrounding conditions such as road surface brightness
Solution Approach 1:
The patent applies dynamics by making the drawing color adaptive rather than fixed. The control unit dynamically adjusts the drawing color based on real-time brightness detection of the road surface and surrounding environment. This allows the system to optimize color selection for each specific condition, resolving the contradiction between effective information conveyance and color recognition accuracy.
Solution Approach 2:
The patent changes the parameter of drawing color based on brightness conditions. When the road surface or surrounding environment is bright, the system selects drawing colors with higher luminance contrast to ensure visibility. This parameter adjustment resolves the contradiction by adapting the color property to the environmental conditions, maintaining both information effectiveness and color recognizability.
2Measurement precision
If the drawing color is selected to maximize contrast on bright road surfaces, then visibility is improved, but the ability to convey color-specific information is reduced
Solution Approach 1:
The patent applies local quality by making different parts of the information conveyance system serve different functions. The brightness detector and control unit locally adjust the drawing color properties based on environmental conditions. This allows the system to optimize for visibility when needed while preserving color information when conditions permit, resolving the contradiction between visibility and color information conveyance.
3Loss of information
If multiple drawing colors are used to convey different information, then information richness is increased, but the complexity of selecting appropriate colors under varying conditions increases
Solution Approach 1:
The patent applies self-service by enabling the system to automatically select appropriate drawing colors without external intervention. The brightness detector and control unit work together to autonomously determine the optimal drawing color based on environmental conditions. This self-service mechanism resolves the contradiction by automating the complex color selection process, allowing rich information conveyance without increasing operational complexity.
Data Source
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AI summary
A road surface drawing device (10) includes: a road surface drawing lamp (11) that draws a pattern on a road surface and that is capable of changing a drawing color of the pattern; a brightness detector (20) that measures a brightness of the road surface or a surrounding environment thereof; and a controller (30) that determines the drawing color of the pattern based on an output of the brightness detector (20) and that controls the road surface drawing lamp (11) such that the pattern is drawn in the determined drawing color.