Adaptive Infrared Lamp Array for Night Visibility and Power Control
Solution Overview
Problem
Existing adaptive driving beam (ADB) headlamp systems face challenges in maximizing visibility while minimizing manufacturing costs and power consumption, and they often fail to provide adequate night visibility due to limitations in infrared light distribution and control.
Innovation Solution
An intelligent night vision system that includes a lamp array part with independently controlled infrared light sources and a lamp driving controller that adjusts luminous intensities and irradiation ranges based on vehicle driving information, including speed and road conditions, to enhance visibility and reduce power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the number of light sources is increased to maximize visibility, then visibility is improved, but manufacturing costs increase
Solution Approach 1:
The headlamp system is divided into multiple independently controllable light sources arranged in specific patterns. Each light source can be individually controlled to form different beam patterns, allowing the system to achieve comprehensive visibility coverage without requiring an excessive number of light sources. The segmentation enables precise control over which light sources are activated based on driving conditions.
Solution Approach 2:
The headlamp system dynamically adjusts the activation and beam patterns of individual light sources based on real-time driving conditions, detected objects, and environmental factors. This dynamic control allows the system to optimize visibility for each specific situation without continuously operating all light sources, thereby reducing manufacturing costs while maintaining effective visibility when needed.
2Ease of manufacture
If the number of light sources is reduced to minimize manufacturing costs, then manufacturing costs decrease, but visibility is compromised
Solution Approach 1:
Different light sources are assigned to specific spatial zones and functional roles within the headlamp assembly. Each light source is optimized for its particular location and purpose, such as illuminating specific areas or detecting objects in particular directions. This local quality approach ensures that a reduced number of light sources can still provide adequate visibility by strategically positioning and controlling each source.
Solution Approach 2:
The headlamp system integrates multiple functions into a single unified system that combines illumination, object detection, and adaptive beam control. The same light sources serve multiple purposes: illuminating the road, detecting objects through reflection, and providing night vision support. This multi-functionality allows the system to maintain comprehensive performance with fewer light sources, reducing manufacturing costs while preserving visibility.
3Illumination intensity
If infrared light intensity is increased to improve night visibility, then night visibility is improved, but power consumption increases
Solution Approach 1:
The infrared light sources are activated periodically or intermittently based on detected driving conditions rather than continuously. The system activates infrared illumination only when objects are detected or when night vision is required, and deactivates them when not needed. This periodic action significantly reduces power consumption while maintaining effective night visibility when required.
Solution Approach 2:
The system dynamically adjusts the intensity and activation state of infrared light sources based on various parameters including detected object distance, ambient light conditions, and vehicle speed. By changing these parameters adaptively, the system optimizes night visibility while minimizing power consumption by using higher intensity only when and where necessary.
4Area of stationary object
If all infrared light sources are activated to ensure comprehensive coverage, then coverage is improved, but power consumption increases
Solution Approach 1:
The infrared illumination system is segmented into multiple independently controllable light sources, each responsible for specific spatial zones. The control system activates only the light sources corresponding to detected objects or areas requiring monitoring, rather than activating all light sources simultaneously. This segmentation enables comprehensive coverage to be achieved selectively, reducing power consumption while maintaining effective monitoring areas.
Solution Approach 2:
The system activates only the necessary portion of infrared light sources required for current driving conditions rather than all light sources. When objects are detected in specific zones, only the corresponding light sources are activated to provide sufficient illumination for those areas. This partial action approach ensures adequate coverage of critical areas while minimizing overall power consumption.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system effectively secures sufficient visibility of front objects by selectively turning on infrared light sources corresponding to detected objects, thereby improving driving stability and reducing power consumption.
Implementation Method 1
a plurality of light sources provided independently from each other... radiate light of an infrared wavelength range
Implementation Method 2
light sources (e.g., light-emitting diode (LED) lamps)
Implementation Method 3
sense light reflected and returned from a front object by a camera
Data Source
AI summary
An intelligent night vision system for detecting an object in front of a vehicle driving at night, and selectively turning on only an infrared light source corresponding to an area in which the object is located or appropriately adjusting the brightness of the infrared light source to improve driving stability.