Active Noise Attenuation Device with Phase Shift Feedback
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Solution Overview
Problem
Existing noise suppression systems are limited in their ability to effectively reduce ambient noise in dynamic work environments and are not widely applicable beyond specific contexts like headphones and luxury cars, failing to adequately address hearing damage and operational inefficiencies in workplaces.
Innovation Solution
A device that generates a 180° phase-shifted ambient noise attenuation signal, corrects errors through feedback, and adapts to various applications by using band-pass filters, phase shifters, and a control unit to optimize noise reduction, while also interfacing with enterprise resource planning systems for machine control and energy efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If existing noise suppression systems are used, then noise attenuation is achieved in specific contexts like headphones and luxury cars, but the systems are not applicable in dynamic work environments and fail to address operational inefficiencies
Solution Approach 1:
The device is designed to function across multiple applications beyond traditional noise suppression contexts. It integrates with enterprise resource planning systems and can operate in dynamic work environments, making it universally applicable to both noise attenuation and operational monitoring functions.
Solution Approach 2:
The system adapts to dynamic work environments by continuously monitoring operational parameters and adjusting noise suppression in real-time. It responds to changing conditions in the workspace, maintaining effectiveness despite variations in noise sources and environmental factors.
2Reliability
If personal protective equipment is used, then legal requirements are met, but worker wellbeing has little improvement and costs are high
Solution Approach 1:
The device converts harmful noise into beneficial information by analyzing noise patterns to detect machine anomalies. It transforms the noise problem into a dual solution: protecting worker hearing while simultaneously monitoring equipment health and preventing operational failures.
Solution Approach 2:
The system provides automatic noise suppression and machine monitoring without requiring worker intervention. It self-adjusts to protect workers' hearing and independently detects operational anomalies, reducing the need for manual protective measures and continuous monitoring.
3Object-affected harmful factors
If noise levels are reduced only through traditional methods, then hearing damage is addressed, but machine operational efficiency and energy consumption remain unoptimized
Solution Approach 1:
The device performs multiple functions simultaneously: it reduces noise to protect hearing while also monitoring machine operations to improve efficiency. The integration with enterprise resource planning systems enables both worker protection and operational optimization in a single system.
Solution Approach 2:
The system uses feedback from noise and vibration analysis to continuously optimize both noise suppression and machine operation. By monitoring operational parameters, it provides real-time feedback that enables adjustments to improve efficiency while maintaining noise reduction effectiveness.
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
The device achieves significant noise reduction, improves machine reliability and energy efficiency, and allows for adaptive noise management across complex industrial and service sector applications, reducing occupational hearing risks and operational anomalies.
Implementation Method 1
generating an ambient noise attenuation signal with 180° phase shift of the detected noise
Implementation Method 2
generating an opposite sound relative to the ambient noise source, thus reducing the perceived disturbance
Implementation Method 3
providing a vibration sensor and to interconnect on Ethernet network
Data Source
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AI summary
An active ambient noise attenuation and control device, which operates selectively by generating an ambient noise attenuation signal with 180° phase shift of the detected noise and, furthermore, means correcting the signal generated by the feedback of a residual noise signal.