Pixelated Vehicle Light Projection for Road-Adaptive Guidance
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Solution Overview
Problem
Current vehicle light beam projection systems lack advanced functionalities to enhance driver and passenger visual comfort, particularly in complex driving scenarios, and do not effectively utilize high-definition resolution technologies to provide new driving assistance features.
Innovation Solution
A method for controlling pixelated light beam projection modules using sensors to model road profiles with polynomial functions, dynamically adjust pattern projection zones, and compensate for mechanical and digital calibration, allowing for obstacle avoidance, trajectory projection, and adaptive light intensity control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If basic lighting functions are used, then device complexity is low, but visual comfort and driving assistance functionalities are limited
Solution Approach 1:
The projection module is designed to perform multiple functions: basic road illumination (high-beam/low-beam) and advanced driving assistance through pattern projection. The same hardware infrastructure (projection modules, sensors, control device) supports both traditional lighting and new functionalities such as obstacle detection, trajectory guidance, and visual comfort enhancement, eliminating the need for separate dedicated systems.
Solution Approach 2:
The control device divides the road ahead into multiple projection zones (first projection zone, second projection zone, etc.) with different functions. Each zone can display different patterns or information independently, allowing the system to provide targeted assistance for specific driving scenarios while maintaining overall system efficiency.
2Illumination intensity
If high-definition resolution projection modules are used, then visual comfort and new functionalities are improved, but device complexity increases
Solution Approach 1:
The system performs self-calibration by automatically determining the positions of projection zones relative to road features (road edges, center line) and adjusting projection parameters accordingly. The control device uses sensor data to autonomously calculate polynomial functions modeling road profiles and dynamically adapts projection patterns, eliminating the need for manual calibration and reducing operational complexity.
Solution Approach 2:
The system continuously receives feedback from sensors (cameras, radar, lidar) about road conditions, obstacle positions, and vehicle state. This feedback is used by the control device to dynamically adjust projection patterns, zone positions, and light intensity in real-time, ensuring optimal visual comfort and assistance functionality while adapting to changing driving conditions.
3Adaptability or versatility
If dynamic pattern projection is implemented, then driving assistance is enhanced, but energy consumption increases
Solution Approach 1:
The projection system operates periodically rather than continuously, activating pattern projection only when specific conditions are detected (obstacles, curves, intersections, poor visibility). The control device monitors sensor inputs and triggers projection activities only when needed, reducing overall energy consumption while maintaining enhanced driving assistance when required.
Data Source
AI summary
Method for controlling modules for projecting pixelated light beams of a host vehicle. The host vehicle includes a step of determining, using a control device and according to the collected data, a polynomial function which models the profile of the edge and the centre of the road, such that the road profile is modelled based on a polynomial function, the degree of which depends on the curvature of the road. Also included is a step of determining, by means of the control device, a starting point (Pd) and an arrival point (Pa) of an area for projection (ZPd, ZPg, ZP) of patterns, and a step of determining, by means of the control device, a distance (De) between an axis (Ac) of a data/image acquisition means and the patterns, respectively for a right projection area ZPd and a left projection area ZPg. The control device is used to determine the width (Lm) of the pattern.