Vehicle Lighting System with Synchronized Shutter and Luminance Control
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Solution Overview
Problem
When driving at night, a vehicle driver's field of view can be obstructed by light emitted from oncoming or rear vehicle headlamps, potentially causing accidents due to glare and reduced visibility.
Innovation Solution
A lighting system for vehicles that includes a sensor module to detect light intensity, a control module to generate synchronized shutter operation and lighting operation signals, and a headlamp module with adjustable luminance, which alternately emits lights of different luminance in synchronization with the opening and closing of a shutter glass to reduce glare.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the headlamp emits light continuously at high luminance, then the driver's field of view is well illuminated, but glare from oncoming or rear vehicles obstructs the driver's vision
Solution Approach 1:
The headlamp alternates between high luminance and low luminance states in synchronization with the shutter glass opening and closing. This periodic action allows the headlamp to provide adequate illumination during shutter-open periods while reducing glare during shutter-closed periods, resolving the contradiction between maintaining good field of view and preventing glare obstruction
Solution Approach 2:
The system dynamically adjusts the headlamp luminance based on real-time shutter position feedback. The control module modifies the headlamp output according to whether the shutter is opening or closing, creating a dynamic lighting system that adapts to changing visibility conditions rather than maintaining a static high or low luminance state
2Object-affected harmful factors
If the shutter glass closes to block glare, then the driver's field of view is protected from glare, but the driver's visibility is reduced
Solution Approach 1:
The shutter glass alternates between open and closed states in synchronization with the headlamp luminance changes. During shutter-open periods, maximum visibility is provided; during shutter-closed periods, glare protection is provided while the headlamp simultaneously reduces luminance. This coordinated periodic action ensures that visibility is maintained during the periods when the shutter provides protection
Solution Approach 2:
The system maintains continuous useful action by ensuring that illumination is always provided at an appropriate level, even when the shutter is closed. The headlamp's synchronized luminance reduction and increase ensures that the driver always has adequate visibility during both shutter-open and shutter-closed periods, eliminating gaps in useful illumination
Data Source
AI summary
A lighting system for a vehicle is provided. The lighting system includes a sensor module, a control mode, a shutter glass, and a headlamp module. The sensor module senses light entering from outside of the vehicle to generate a sensing signal. The control module generates shutter and lighting operation signals based on the sensing signal. The shutter glass is opened and closed according to the shutter operation signal. The headlamp module has a light source unit that alternately emits a first light having a first luminance and a second light having a second luminance according to the lighting operation signal. The control module controls the shutter and lighting operation signals to enable the light source unit to alternately emit the first and second lights in synchronization with the opening and closing operations of the shutter glass.