Vehicle Speaker Grill Dynamic Opening Ratio Control
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Solution Overview
Problem
Existing speaker grills in vehicles face challenges in maintaining sound quality while preventing dust and water ingress, as their design limitations, such as thickness and hole size, affect audio output and aesthetic appeal.
Innovation Solution
An apparatus and method for controlling the speaker grill in vehicles, which automatically opens and closes based on sensor data from door, seating, humidity, and device state signals, adjusting the opening ratio to optimize audio output and protection from environmental factors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the speaker grill thickness is reduced and hole size is decreased to improve opening ratio, then sound quality is improved, but the grill becomes more vulnerable to dust and water ingress and less protective
Solution Approach 1:
The speaker grill is designed to be movable rather than fixed, allowing it to dynamically change its opening ratio based on operating conditions. The grill can open to improve sound quality during audio playback and close to prevent dust and water ingress when the speaker is not in use or during rainy conditions.
Solution Approach 2:
The opening ratio of the speaker grill is changed as a variable parameter based on different operating conditions. By adjusting the opening ratio dynamically, the system optimizes sound quality when needed while minimizing exposure to harmful factors when the speaker is protected.
2Manufacturing precision
If the speaker grill is opened to improve audio output performance, then sound quality is enhanced, but protection from dust and water is reduced
Solution Approach 1:
The speaker grill transitions from a static protective cover to a dynamic component that adjusts its state based on operational requirements. It opens during audio playback to enhance sound quality and closes during non-use or adverse weather to maintain protection.
Solution Approach 2:
The speaker grill operates in periodic cycles of opening and closing based on usage patterns. It opens periodically during audio playback and closes periodically during non-use, creating a rhythmic pattern that balances audio performance and protection.
3Ease of manufacture
If a fixed speaker grill design is used, then manufacturing is simple, but audio performance is limited by thickness and hole size constraints
Solution Approach 1:
By making the grill movable, the design allows for simpler manufacturing of individual components while achieving superior audio performance through dynamic adjustment. The grill can be manufactured with standard thickness and hole sizes but delivers high-performance audio when open.
4Object-affected harmful factors
If the speaker grill remains closed to protect the speaker, then dust and water prevention is maximized, but audio output performance is degraded
Solution Approach 1:
The movable grill design allows the system to achieve maximum protection when closed and maximum audio performance when open, eliminating the need to compromise either function. The grill dynamically switches between these two extreme states based on operational needs.
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
Enhances sound quality by dynamically adjusting the grill's opening ratio, preventing dust and water ingress, and allowing for customizable grill designs, thereby improving both audio performance and protection.
Implementation Method 1
a motor device coupled to the speaker grill to achieve the opening ratio
Data Source
AI summary
A method of controlling a speaker grill of a speaker including a play unit separable from the speaker grill in a vehicle includes: collecting at least one of information outputted by a sensor equipped in the vehicle and information indicating an operating state of a device equipped in the vehicle; determining an opening ratio of the speaker grill of the speaker based on the collected information; and controlling a motor device coupled to the speaker grill to achieve the opening ratio.