Acoustic Vent Opening Measurement System
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Solution Overview
Problem
There is a lack of instruments and systems capable of effectively measuring the degree of opening of the vent formed by a venting device, which is crucial for suppressing the occlusion effect in acoustic devices.
Innovation Solution
A measuring system comprising a first chamber, a sound sensing device, a sound source, and a top cover, which uses sound waves to measure the degree of opening of the vent by sensing the sound in a cavity connected to the venting device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a venting device is provided in an acoustic device to suppress occlusion effect, then acoustic performance is improved, but measurement capability of the vent opening degree is insufficient
Solution Approach 1:
A sound sensing device is introduced as an intermediary element to indirectly measure the vent opening degree. The sound sensing device detects sound pressure changes in the first cavity, which are caused by sound waves passing through the venting device. This intermediary measurement approach enables precise measurement of the vent opening degree without direct physical contact or complex imaging systems.
Solution Approach 2:
The patent replaces complex mechanical measurement systems with an acoustic-based measurement system. Instead of using mechanical gauges, microscopes, or direct visual inspection methods to measure the vent opening degree, the system uses sound wave propagation and sound pressure detection to infer the opening degree, thereby simplifying the measurement apparatus while maintaining precision.
2Device complexity
If no measurement system is available for vent opening degree, then device complexity is reduced, but measurement capability is lost
Solution Approach 1:
The sound sensing device serves multiple functions: it detects sound pressure in the first cavity, measures the vent opening degree, and can potentially monitor acoustic device performance. This multi-functionality reduces the need for separate dedicated measurement apparatus, thereby maintaining simplicity while enabling measurement capability.
3Measurement precision
If sound sensing device is used to measure vent opening degree, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The measuring system merges the sound sensing device with the existing acoustic device structure. The sound sensing device is integrated into the first cavity, which is already part of the acoustic device housing. This merging approach allows the measurement function to be added without requiring completely separate external measurement equipment, thereby limiting the increase in overall device complexity.
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 system accurately measures the degree of opening of the vent, allowing for the assessment of the venting device's performance in suppressing the occlusion effect, thereby enhancing the acoustic device's performance.
Implementation Method 1
The sound source is configured to generate a sound wave propagating towards the first cavity
Implementation Method 2
The sound sensing device is configured to sense a sound in the first cavity
Data Source
AI summary
A measuring system includes a first chamber, a sound sensing device, a sound source and a top cover. A first cavity exists inside the first chamber. The sound sensing device is configured to sense a sound in the first cavity. The sound source is configured to generate a sound wave propagating towards the first cavity. The top cover is disposed on the first chamber. The measuring system is configured to measure a degree of opening of a vent formed by a venting device. The venting device is disposed between the first chamber and the top cover and connected to the first cavity of the first chamber for being measured the degree of opening, the first cavity of the first chamber is between the venting device and the sound sensing device, and the degree of opening is obtained according to a result generated by the sound sensing device.