Resonator Array Spectrum Analysis Using Multiple Resonance Modes
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Solution Overview
Problem
Spectrum analyzers face challenges in simultaneously improving time and frequency resolution due to their trade-off relationship, leading to increased calculation complexity and difficulties in miniaturization and performance optimization for sound and vibration analysis applications.
Innovation Solution
The implementation of a sound/vibration spectrum analyzing device utilizing a resonator array with a band signal divider, such as a diplexer or triplexer, to separate and analyze frequency signals from multiple resonance modes, allowing for improved resolution and reduced device size by leveraging the characteristics of first and second resonance modes, and potentially higher order modes, within a single physical resonator.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If Fourier transform is used to obtain frequency domain information from sound signals, then frequency analysis capability is improved, but calculation amount increases and computational complexity worsens
Solution Approach 1:
The patent replaces the computational Fourier transform system with a physical resonator array system. Instead of using digital signal processing (mechanical/computational system) to analyze frequency spectra, the invention uses physical resonators that naturally respond to specific frequency ranges through resonance. This substitution eliminates the need for complex calculations while maintaining frequency analysis capability, as the resonators physically filter and indicate frequency components through their resonance responses.
Solution Approach 2:
The patent employs mechanical vibration principles through resonators that are designed to vibrate at specific resonance frequencies corresponding to different frequency bands. Each resonator in the array is tuned to a particular frequency range, and when sound signals pass through the resonator array, the resonators mechanically vibrate in response to matching frequency components. This mechanical vibration approach provides direct frequency domain information without requiring computational Fourier transforms, thereby reducing calculation complexity while preserving measurement precision.
2Measurement precision
If multiple resonators are used to improve frequency resolution, then frequency analysis precision is improved, but device area increases
Solution Approach 1:
The patent transitions from a one-dimensional arrangement of resonators to a three-dimensional integrated structure. By stacking resonators vertically or arranging them in multiple layers, the invention achieves high frequency resolution with multiple resonators while minimizing the horizontal footprint. This dimensional transition allows the resonator array to maintain excellent frequency resolution without occupying large device area, as the resonators are compactly arranged in the vertical dimension rather than spreading out horizontally.
3Area of stationary object
If resonator size is reduced to minimize device area, then device miniaturization is improved, but output signal strength decreases
Solution Approach 1:
The patent combines multiple small resonators into an integrated resonator array structure. While individual resonators are miniaturized to reduce device area, their collective output is merged and combined through the array configuration. This merging approach allows each resonator to maintain a small size for miniaturization while the combined signal output from all resonators provides sufficient strength for practical applications, effectively resolving the contradiction between device area and output signal strength.
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
This approach enables enhanced frequency resolution and reduced device size while maintaining or improving output, allowing for efficient analysis of sound and vibration spectra across a wide frequency range with fewer resonators, thus addressing the trade-off limitations in existing technologies.
Implementation Method 1
a resonator array with a band signal divider, such as a diplexer or triplexer, to separate and analyze frequency signals from multiple resonance modes
Data Source
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AI summary
A sound and vibration spectrum analyzing device includes a plurality of resonators having different center frequencies, the plurality of resonators being configured to acquire a spectrum of sound and vibration. The sound and vibration spectrum analyzing device is configured to analyze the spectrum of sound and vibration, based on a first frequency signal of a first resonance mode and a second frequency signal of a second-order or higher resonance mode of at least some of the plurality of resonators.