Resonant Vibration Sensing Structure for Wide-Frequency Detection
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Solution Overview
Problem
Existing vibration sensors have limitations in measuring a wide frequency range and suffer from low sensitivity, particularly in amplifying target frequencies suitable for systems.
Innovation Solution
A vibration sensing apparatus comprising a base member, vibration transmission member, and sensing element, where the transmission member amplifies vibrations and adjusts resonant frequencies to match target frequencies, enhancing sensitivity by using piezoelectric materials.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If different types of sensors are used to measure wide frequency range, then frequency measurement coverage is improved, but device complexity increases
Solution Approach 1:
The patent employs a dynamic resonance structure where the vibration transmission member can be adjusted to resonate at different target frequencies. This allows a single sensor to adapt to various frequency ranges dynamically, eliminating the need for multiple fixed-frequency sensors and reducing device complexity while maintaining wide frequency coverage.
Solution Approach 2:
The invention changes the resonance frequency parameter of the vibration transmission member to match different target frequencies. By adjusting this parameter, the sensor can measure across wide frequency ranges from low to ultra-high frequencies using the same physical sensor, avoiding the need for multiple sensor types.
2Measurement precision
If vibration frequency is not amplified, then measurement simplicity is maintained, but sensitivity deteriorates
Solution Approach 1:
The patent uses mechanical resonance to amplify vibrations. The vibration transmission member is designed to resonate at the target frequency, naturally amplifying the vibration amplitude before it reaches the sensing element. This mechanical amplification mechanism enhances sensitivity without requiring complex electronic amplification circuits.
Solution Approach 2:
The vibration transmission member acts as an intermediary between the measurement target and the sensing element. It amplifies the target frequency vibrations and transmits them to the sensor, improving sensitivity while keeping the overall system structure relatively simple.
3Measurement precision
If target frequency is not amplified, then device simplicity is maintained, but measurement precision deteriorates
Solution Approach 1:
The vibration transmission member is designed with specific geometric parameters (length, width, thickness) that determine its resonance frequency. By adjusting these dimensions, the member resonates at the target frequency, amplifying vibrations and improving frequency detection accuracy through natural mechanical resonance rather than complex electronic tuning mechanisms.
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 apparatus enables measurement across a wide frequency range from low to ultra-high frequencies with improved sensitivity, achieving high sensing voltages and sensitivity in specific frequency regions.
Implementation Method 1
The vibration transmission member transmits an external vibration signal to the sensing element
Implementation Method 2
vibration sensors using piezoelectric materials capable of detecting the frequency and acceleration of vibrations
Data Source
AI summary
Embodiments disclose a vibration sensing apparatus including a base member, a vibration transmission member disposed on the base member, and a sensing element disposed on the vibration transmission member. The vibration transmission member is configured to transmit an external vibration signal to the sensing element.