Road Surface Image Projection Fault Detection in Vehicles
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Defects in light projection members used for rendering road surface images can result in inaccurate or incomplete images, making it difficult for drivers and pedestrians to recognize important information.
Innovation Solution
A vehicle equipped with a light projection member, a controller, and a detection device that uses a test light projection pattern to determine if the light projection member is operating correctly, and if not, prohibits light projection to prevent rendering of an inaccurate road surface image.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If light projection for road surface image rendering is performed continuously, then information communication with drivers and pedestrians is improved, but the risk of projecting inaccurate images due to light projection member defects increases
Solution Approach 1:
The system performs preliminary detection of the light projection member's operating state before initiating road surface image rendering. The detection device checks whether the light projection member is in a suitable state for accurate projection, and only when the detection passes does the controller permit light projection for rendering. This preliminary action prevents defective projections from occurring in the first place.
Solution Approach 2:
The detection device continuously monitors the operating state of the light projection member and provides feedback to the controller. Based on this feedback, the controller dynamically adjusts whether to permit or prohibit light projection for road surface image rendering. This closed-loop feedback mechanism ensures that inaccurate images are not projected while maintaining effective information communication when the system is functioning properly.
2Manufacturing precision
If light projection member operation is monitored and controlled, then image accuracy is improved, but system complexity increases
Solution Approach 1:
The detection device is designed with multi-functionality, serving both to detect the operating state of the light projection member and to provide control signals to the controller. This universal component reduces the need for separate dedicated detection and control systems, thereby limiting the increase in device complexity while still achieving improved image accuracy through monitoring and control.
Data Source
AI summary
A vehicle with road surface image rendering functionality includes: a light projection member configured to perform light projection for road surface image rendering toward a road surface in front of the vehicle; a controller configured to control the light projection by the light projection member; and a detection device configured to perform detection of a state where the light projection member is performing the light projection. The controller is configured to: cause the light projection member to perform the light projection; determine, based on the detection by the detection device, whether the light projection member is suitable for the light projection; when the light projection member is suitable for the light projection, start the light projection from the light projection member; and, when the light projection member is unsuitable for the light projection for the road surface image rendering, prohibit the light projection by the light projection member.