Light-Activated Helmholtz Resonator for Adaptive Acoustic Control
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Solution Overview
Problem
Conventional acoustic resonators, such as Helmholtz resonators, lack effective methods to adjust or control their acoustic properties using light as a stimulus.
Innovation Solution
A light-activated acoustic resonator is developed, incorporating a Helmholtz resonator with an electromagnet and a light-activation circuit that controls a moveable member to switch between extended and retracted positions based on ambient light levels, altering the resonator's acoustic state.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional acoustic resonators are used, then the acoustic properties are fixed and cannot be adjusted, but adding control mechanisms increases device complexity
Solution Approach 1:
The patent applies the dynamics principle by making the resonator's acoustic properties changeable through a movable partition wall that can shift between positions. This dynamic structure allows the resonator to transition between different acoustic states (resonant and non-resonant) based on light detection, enabling adaptive control without requiring multiple fixed resonators.
Solution Approach 2:
The patent replaces traditional mechanical control mechanisms with an optical-mechanical system. A light sensor detects ambient light levels and triggers an electromagnet to move the partition wall, substituting direct mechanical adjustment with an automated optical-triggered mechanism that simplifies user interaction while maintaining control capability.
2Ease of operation
If the resonator is activated by light, then dynamic control is enabled, but the device requires additional components like electromagnets and light sensors
Solution Approach 1:
The patent implements self-service by using the ambient light environment itself as the control signal. The light sensor automatically detects changes in ambient light levels and triggers the electromagnet without requiring external control circuits or user intervention. The system serves itself by converting environmental light variations into automated resonator activation.
Solution Approach 2:
The patent introduces an intermediary optical-mechanical coupling system that bridges the gap between light detection and mechanical actuation. The light sensor detects optical signals, and the electromagnet serves as an intermediary that converts this optical information into mechanical movement of the partition wall, enabling indirect but effective control.
3Adaptability or versatility
If the partition wall is movable to change acoustic state, then acoustic control is achieved, but the moveable member adds structural complexity
Solution Approach 1:
The patent applies universality by designing the movable partition wall to serve multiple functions: it acts as both an acoustic barrier controlling sound propagation and as a mechanical actuator triggered by light detection. This single component performs both acoustic control and light-responsive actuation, eliminating the need for separate control mechanisms.
Solution Approach 2:
The patent merges the acoustic control function and the light-actuation function into a single integrated system. The partition wall is both the acoustic element that controls sound and the mechanical component that responds to light, combining what would traditionally be separate systems into one unified structure that achieves both objectives simultaneously.
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
Enables dynamic control of acoustic resonance and frequency using light, allowing for applications like sound propagation management and human-machine interface interaction.
Implementation Method 1
an electromagnet disposed within the Helmholtz resonator
Implementation Method 2
a light-activation circuit that causes a moveable member of the electromagnet to be in an extended position
Implementation Method 3
Acoustic resonators such as Helmholtz resonators are used in a variety of applications involving the amplification or attenuation of sound
Data Source
AI summary
A light-activated acoustic resonator and associated methods are described herein. One embodiment measures the level of ambient light in the environment of the light-activated acoustic resonator; causes a moveable member of an electromagnet disposed within a Helmholtz resonator of the light-activated acoustic resonator to be in an extended position that places the Helmholtz resonator in a first acoustic state, when the level of ambient light is less than a predetermined amount; and causes the moveable member to be in a retracted position that places the Helmholtz resonator in a second acoustic state different from the first acoustic state, when the level of ambient light is at least the predetermined amount.