In-Vehicle Lighting Control Using Passenger Gaze and Driving State
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Solution Overview
Problem
Current in-vehicle lighting systems cannot provide an optimized lighting environment for passengers in autonomous vehicles, as they do not consider the passenger's state, external environment, or driving conditions.
Innovation Solution
An apparatus and method for controlling the in-vehicle lighting environment, which includes a passenger state determination unit, a driving state determination unit, an external environment state determination unit, and a lighting environment control unit. These units work together to adjust the illuminance and color of lights inside the vehicle based on the determined states.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If ambient lighting systems merely change color or illuminance to improve aesthetics, then the visual appeal of the vehicle interior is enhanced, but the lighting environment is not optimized for passenger comfort or safety
Solution Approach 1:
The lighting system dynamically adjusts illuminance and color temperature based on real-time passenger state detection. The control unit modifies lighting parameters according to whether the passenger is awake, sleeping, or engaged in activities, transforming the static ambient lighting into an adaptive system that responds to changing conditions.
Solution Approach 2:
The system incorporates feedback loops where sensors continuously monitor passenger state (through cameras detecting gaze direction, posture, and activity) and provide this information to the control unit, which then adjusts the lighting accordingly. This closed-loop control ensures the lighting environment remains optimized for passenger comfort and safety.
2Measurement precision
If the lighting system incorporates multiple sensors and determination units to detect passenger state, then the accuracy of lighting optimization is improved, but the device complexity increases
Solution Approach 1:
The control unit serves multiple functions: it receives data from various sensors (cameras, illuminance sensors), determines passenger state through image processing, controls lighting parameters, and coordinates with other vehicle systems. This multi-functional approach consolidates complexity into a single control unit rather than requiring separate dedicated components for each function.
Solution Approach 2:
The system merges the determination of passenger state, driving state, and external environment state into a unified control framework. By combining multiple determination units and sensor inputs into a single control unit that processes all information together, the system reduces overall complexity while maintaining comprehensive monitoring capabilities.
3Adaptability or versatility
If the lighting system adjusts based on external illuminance and driving state, then the responsiveness to environmental conditions is improved, but the energy consumption increases
Solution Approach 1:
The system adjusts lighting parameters (illuminance level, color temperature) based on external illuminance conditions and driving state. During daytime versus nighttime, or during different driving phases, the lighting parameters are dynamically changed to provide appropriate illumination while minimizing energy consumption when full lighting is not required.
Data Source
AI summary
An apparatus for controlling an in-vehicle lighting environment includes: a passenger state determination unit that determines a state of a passenger using a gaze of the passenger photographed by a camera of a vehicle; a driving state determination unit that determines a driving state of the vehicle using an acceleration value measured by an acceleration sensor of the vehicle; an external environment state determination unit that determines an external environment state of the vehicle using an external illuminance value measured by an external illuminance sensor of the vehicle; and a lighting environment control unit that controls an illuminance and a color of a first light disposed inside the vehicle based on data determined by at least one determination unit among the passenger state, driving state, and external environment state determination units.