Vehicle Exterior Light Control for Key-Off Activity Lighting
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Solution Overview
Problem
Modern vehicles consume excessive energy when exterior lights are used during the key-off state, necessitating a solution to optimize energy consumption while ensuring adequate illumination for user activities.
Innovation Solution
The vehicle determines user presence and authorization, identifies the activity type, adjusts exterior light intensity based on ambient and user preferences, and dynamically adjusts lighting to optimize energy use, balancing energy consumption across vehicle features.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If exterior lights are used during key-off state to illuminate surroundings, then user convenience and comfort are improved, but vehicle energy consumption increases
Solution Approach 1:
The system dynamically adjusts exterior light intensity based on real-time conditions including ambient light levels, user activity type, and user preferences. The light intensity is not fixed but adapts continuously to optimize the balance between user convenience and energy consumption, implementing a dynamic control strategy rather than a static on/off approach
Solution Approach 2:
The system changes the lighting parameter (intensity) based on detected user activity type and ambient conditions. Different activity types (e.g., reading, cooking, gaming) have different associated lighting intensity requirements, and the system adjusts the light intensity parameter accordingly to provide adequate illumination while minimizing energy consumption
2Illumination intensity
If exterior lights illuminate at high intensity to ensure adequate lighting for user activities, then illumination quality is improved, but energy consumption increases
Solution Approach 1:
The system provides localized quality lighting by adjusting intensity based on the specific user activity type detected. Different activities require different lighting qualities - for example, reading may require higher intensity focused on the reading area, while other activities may require lower intensity. This localized quality approach ensures adequate lighting for the specific task without unnecessarily illuminating the entire surrounding area at high intensity
Solution Approach 2:
The system applies partial action by providing only the necessary amount of lighting intensity required for the detected user activity, rather than always illuminating at maximum intensity. The lighting intensity is calibrated to match the minimum required level for comfortable activity performance, avoiding excessive energy consumption while maintaining sufficient illumination quality
Data Source
AI summary
A vehicle including a sensor unit, an exterior light and a processor is disclosed. The sensor unit may capture inputs associated with vehicle surroundings. The processor may determine that a user may be performing an activity in proximity to the exterior light based on the inputs obtained from the sensor unit. The processor may also determine an activity type based on the inputs responsive to determining that the user is performing the activity. The processor may further determine an optimal lighting intensity for the exterior light based on the activity type. The processor may then illuminate the exterior light at the optimal lighting intensity.