Vehicle Headlamp Projection for 3D Pedestrian Guidance
Solution Overview
Problem
Existing vehicle headlamp systems lack the ability to effectively communicate safety information to pedestrians, especially at night, and struggle to intuitively convey driving information to drivers without requiring them to switch visual perspectives.
Innovation Solution
A vehicle headlamp control device that includes a sensor and a processor to detect pedestrians and transmit a marking image of a three-dimensional pattern to the road surface, allowing drivers to indicate their intention to yield through an input interface, and using a lookup table to map and record the marking images for driver yield content.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If conventional road surface illumination lamps are used to project visual image information, then pedestrians can recognize the projected graphics, but the information conveyed is limited to basic graphic shapes without psychological insights or intuitive behavioral guidance
Solution Approach 1:
The patent transitions from conventional 2D road surface projection to 3D spatial lighting patterns that extend vertically and depth-wise. The headlamp system projects three-dimensional light fields that create immersive visual experiences, adding spatial dimensionality to communicate complex safety information and guide pedestrian behavior more effectively.
Solution Approach 2:
The system dynamically adjusts lighting parameters including intensity, color temperature, projection patterns, and temporal sequences to convey different safety messages. By varying these optical parameters, the headlamp can communicate nuanced information about vehicle intentions, pedestrian safety zones, and behavioral guidance without requiring additional hardware.
2Ease of operation
If AR Nav devices or HUD are used to display driving information in 3D, then driving information becomes more intuitive, but the device size and resolution must be expanded to display detailed information
Solution Approach 1:
The patent uses the road surface and air space as intermediary projection surfaces, eliminating the need for large physical display devices. By projecting information onto external surfaces (road, air, windshield), the system achieves large-scale 3D information display without increasing headlamp volume, leveraging the environment as the display medium.
3Loss of information
If conventional headlamps are used for illumination, then basic visibility is provided, but they cannot effectively communicate safety information to pedestrians or convey driver intentions
Solution Approach 1:
The headlamp system performs multiple functions simultaneously: illumination, pedestrian detection, and safety information communication. By integrating sensor data with lighting control, the headlamp becomes a multi-functional device that both illuminates the road and communicates vehicle intentions to pedestrians through programmed lighting patterns and sequences.
Solution Approach 2:
The system uses sensors to detect pedestrians and other road users, then adjusts lighting patterns based on this feedback. The headlamp controller receives input from detection devices and dynamically modifies illumination patterns to communicate safety information relevant to the detected environment, creating a closed-loop communication system.
Data Source
AI summary
A vehicle headlamp control device according to an embodiment of the present disclosure includes: a sensor; and a processor operatively connected to the sensor and transmitting a marking image of a three-dimensional pattern to a road surface through a headlamp of a vehicle, when a monitoring target is detected in front of the vehicle through the sensor.