Adaptive Driving Beam Headlamp Gradual Transition
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Solution Overview
Problem
Conventional adaptive driving beam (ADB) systems abruptly switch between high-beam and low-beam patterns, causing a dramatic change in a driver's illuminated field of view, which can be confusing and distracting.
Innovation Solution
A lighting system with a controller that manages a low-beam, middle-beam, and high-beam pattern, using sensors to adjust the beam pattern gradually based on detected vehicles, allowing for a smoother transition between light settings to avoid dazzling other drivers and maintain adequate illumination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the lighting system immediately switches from high-beam pattern to low-beam pattern when a nearby vehicle is detected, then the dazzling effect to nearby vehicles is minimized, but the driver's illuminated field of view changes dramatically in an instant causing confusion
Solution Approach 1:
The lighting system is divided into multiple independent beam patterns (high-beam, middle-beam, low-beam) that can be activated selectively. The controller segments the illumination into distinct zones and patterns, allowing gradual transition through intermediate states rather than abrupt switching between only two extremes.
Solution Approach 2:
The lighting system dynamically adjusts the beam pattern based on real-time detection of nearby vehicles. The controller continuously monitors vehicle proximity and dynamically transitions between beam patterns at controlled rates, making the lighting adaptable to changing conditions while maintaining stability for the driver.
2Illumination intensity
If the lighting system provides greater illumination in front of the vehicle with high-beam pattern, then the illuminated field of view at night is improved, but the interference with other nearby vehicles increases
Solution Approach 1:
Different regions of the illumination field are assigned different qualities and intensities. The system provides high illumination intensity in areas without nearby vehicles while reducing intensity in directions where vehicles are detected. Each beam pattern (high, middle, low) has distinct local characteristics optimized for specific driving conditions.
Solution Approach 2:
The lighting system changes physical parameters of the light output including intensity, beam angle, and pattern distribution. By adjusting these parameters dynamically based on detected vehicle positions, the system optimizes illumination for the driver's needs while minimizing interference with other road users.
3Illumination intensity
If the lighting system switches back from low-beam pattern to high-beam pattern when the other vehicle is no longer nearby, then the illuminated field of view is restored, but the dramatic change continues to distract the driver
Solution Approach 1:
The system prepares for transitions by detecting vehicle positions in advance and initiating gradual beam pattern changes before the driver would notice abrupt shifts. The controller implements preliminary adjustments to lighting patterns based on predicted vehicle positions, smoothing out transitions and maintaining stability.
Solution Approach 2:
The lighting system maintains continuous adaptation to driving conditions rather than discrete switching. The beam patterns transition smoothly and continuously adjust based on real-time sensor data, ensuring the illumination remains optimized while avoiding abrupt changes that would distract the driver.
Data Source
AI summary
A lighting system, including: a first headlamp on a front of a local vehicle and including a first low-beam lamp for shining light in front of the local vehicle at a first angle below horizontal, a first middle-beam lamp for selectively shining light in front of the local vehicle at a second angle below horizontal, and a first high-beam lamp for selectively shining light in front of the local vehicle at a third angle below horizontal; a sensory cluster for detecting a remote vehicle in front of the first headlamp; a controller for controlling operation of the first low-beam, middle-beam, and high-beam lamps, wherein the first angle is greater than the second angle and the second angle is greater than the third angle, and the controller controls operation of the first middle-beam and high-beam lamps based at least in part on signals from the sensory cluster.