Variable Sunroof Windbreak Control for Wind Noise Reduction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing sunroof systems in vehicles often rely on a fixed position windbreak, which is insufficient to effectively reduce wind noise across varying driving conditions.
Innovation Solution
A motorized windbreak system that adjusts its position based on real-time sound level measurements within the vehicle, using sound sensors and a controller to optimize noise reduction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a fixed position windbreak is used, then the device complexity is reduced, but the adaptability to different driving conditions deteriorates
Solution Approach 1:
The windbreak is transformed from a fixed static structure to a dynamic adjustable one. A motor (22) is coupled to the windbreak (20) to enable variable positioning during vehicle operation. The motorized adjustment mechanism allows the windbreak to adapt its position based on different driving conditions, resolving the contradiction between simplicity and adaptability.
Solution Approach 2:
A sound sensor (32) is integrated into the system to detect noise levels inside the vehicle cabin. The sensor provides feedback to a controller (30) which automatically adjusts the windbreak position to minimize wind noise. This feedback loop enables the system to adapt to varying driving conditions without requiring complex manual intervention.
2Adaptability or versatility
If a motorized variable position windbreak is implemented, then the adaptability to different driving conditions is improved, but the device complexity increases
Solution Approach 1:
The system performs self-adjustment through automatic control. The sound sensor (32) continuously monitors noise levels and the controller (30) automatically positions the windbreak without driver intervention. This self-service capability reduces the need for complex manual control interfaces and simplifies the user experience despite the added motorization.
Solution Approach 2:
The traditional spring-loaded mechanical windbreak system is replaced with a motorized system. The motor (22) provides controlled positioning, replacing the passive spring mechanism. This substitution enables precise, variable positioning while maintaining system simplicity through electronic control rather than complex mechanical linkages.
3Ease of operation
If the windbreak is positioned in a single fixed position, then the ease of operation is maintained, but the noise reduction effectiveness deteriorates under varying driving conditions
Solution Approach 1:
The sound sensor (32) provides continuous feedback on noise levels to the controller (30). Based on this feedback, the controller automatically adjusts the windbreak position to optimize noise reduction. This feedback mechanism maintains ease of operation by eliminating manual adjustment while effectively reducing wind noise across varying driving conditions.
Solution Approach 2:
Manual operation of the windbreak is replaced with an automated motorized system. The motor (22) responds to controller commands to position the windbreak optimally, replacing the need for manual intervention. This substitution maintains operational simplicity from the user perspective while achieving superior noise reduction performance.
Data Source
AI summary
A method and system for controlling a windbreak for a vehicle includes determining a sound signal corresponding to a sound level within the vehicle a minimizing the sound level within the vehicle by moving the windbreak.