Acoustic Sensor Notch for Leakage Path Detection

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Directional acoustic sensor devices face challenges in detecting internal leakage paths between their two sound ports, which can compromise sealing and performance within electronic devices.

Innovation Solution

Incorporating a notch or cutout in the enclosure or gasket of the acoustic sensor module, configured to detect leakage paths between the sound ports, ensuring proper sealing and performance.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If typical leakage detection techniques are used to test acoustic sensor devices, then the sealing can be tested, but internal leakage paths between sound ports in directional devices remain undetected

Engineering Contradiction:

Improvesealing detection accuracyVSAvoidinternal leakage path detection

Core Design Contradiction:

ReliabilityVSDifficulty of detecting and measuring

Solution Approach 1:

The gasket is divided into multiple sections with distinct notches positioned at specific locations. These notches segment the detection capability into multiple zones, allowing independent detection of leakage paths in different regions around the acoustic sensor device.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The notches in the gasket serve as intermediary structures that facilitate leakage path detection. They provide accessible points where leakage can be detected without requiring direct access to internal pathways between sound ports, thereby enabling indirect detection of sealing defects.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Volume of moving object

If the acoustic sensor device is integrated into electronic devices, then the device can be compact, but sealing integrity may be compromised

Engineering Contradiction:

Improvedevice compactnessVSAvoidsealing integrity

Core Design Contradiction:

Volume of moving objectVSReliability

Solution Approach 1:

The notches are pre-formed in the gasket during manufacturing, enabling leakage detection to be performed before the acoustic sensor device is integrated into the final electronic product. This preliminary detection ensures sealing integrity is verified early in the assembly process.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The gasket with integrated notches performs dual functions: it provides sealing for the acoustic sensor device and simultaneously enables self-detection of leakage paths. This self-service capability eliminates the need for separate detection components or procedures.

Inventive Principle:

Principle #25Self-service

3Measurement precision

If directional acoustic sensor devices are used to separate sound sources, then sensitivity to specific directions is improved, but complexity of sealing requirements increases

Engineering Contradiction:

Improvedirectional sensitivityVSAvoidsealing configuration

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The gasket features notches with specific geometric properties positioned at particular locations around the acoustic sensor device. Each notch has locally optimized characteristics that enable detection of leakage paths in specific directional regions, matching the directional sensitivity requirements.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The gasket structure serves multiple functions simultaneously: it provides acoustic sealing for the directional sensor and incorporates detection notches that can identify leakage paths. This multi-functionality reduces overall system complexity by combining sealing and detection capabilities into a single component.

Inventive Principle:

Principle #6Universality (Multi-functionality)

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 notch or cutout enables effective detection of leakage paths, ensuring the acoustic sensor device maintains its directional sensitivity and frequency response, even when integrated into electronic devices.

Implementation Method 1

sound couples into one of the air volumes through the sound port and changes the pressure. This creates a difference in pressure between the front air volume and the back air volume that creates a force on the transducer and drives its motion

Methodology Applied

Scientific EffectPressure gradient: Pressure Gradient

Implementation Method 2

measure the pressure of incoming sound. A transducer, or membrane, that moves in response to the incoming sound

Methodology Applied

Scientific EffectAcoustic pressure: Acoustic Radiation Pressure

Implementation Method 3

The notch is configured to enable detection of a leakage path, within the enclosure, between the first sound port and the second sound port around an outside of the acoustic sensor device

Methodology Applied

Scientific EffectAcoustic wave coupling: Sound

Data Source

PatentUS20250056173A1Leakage path detection in acoustic sensor modules

Publication Date: 2025.02.13 SOUNDSKRIT INC

AI summary

An acoustic sensor module includes an acoustic sensor device including a transducer and an enclosure configured to encapsulate and seal the acoustic sensor device within the enclosure. The enclosure includes a first sound port configured to couple a first side of the transducer to an embodiment environment via a first acoustic channel formed in the enclosure. The enclosure also includes a second sound port configured to couple a second side of the transducer to the embodiment environment via a second acoustic channel formed in the enclosure. The enclosure additionally includes a notch formed on a surface of the enclosure. The notch is configured to enable detection of a leakage path, within the enclosure, between the first sound port and the second sound port around an outside of the acoustic sensor device.