Electroplated Speaker Housing Faraday Cage for Aviation EMI

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Solution Overview

Problem

Headphones used in commercial aviation often experience reduced sound quality due to electromagnetic interference from grounding problems and electrical systems on planes.

Innovation Solution

The implementation of shielded headphones with electroplated speaker housings that create a Faraday cage around each speaker, preventing electromagnetic radiation from interfering with the audio signals.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If headphones are used in commercial aviation without shielding, then they are simple and inexpensive, but electromagnetic interference from grounding problems and electrical systems reduces sound quality

Engineering Contradiction:

Improvesound qualityVSAvoidheadphone structure

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

A Faraday cage shield is introduced as an intermediary component between the electromagnetic environment and the speaker components. The shield acts as a mediator that blocks electromagnetic interference from grounding problems and electrical systems, protecting the audio signal without requiring fundamental changes to the headphone design

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The Faraday cage is implemented as a thin metallic enclosure that surrounds the speaker components. This thin film structure provides effective electromagnetic shielding while adding minimal bulk and complexity to the headphone design, maintaining ease of manufacture

Inventive Principle:

Principle #30Flexible shells and thin films

2Reliability

If electroplated speaker housings with Faraday cage are implemented, then electromagnetic interference is eliminated and sound quality is enhanced, but manufacturing complexity increases

Engineering Contradiction:

Improveelectromagnetic shielding effectivenessVSAvoidelectroplating process

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

The manufacturing approach is changed by applying electroplating to create the Faraday cage shield. This parameter change in the manufacturing process (adding an electroplating step) transforms the housing material properties to provide electromagnetic shielding, achieving reliable protection against interference

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The speaker housing becomes a composite structure combining the base housing material with an electroplated metallic layer. This composite construction provides both the structural integrity of the original housing and the electromagnetic shielding properties of the metallic coating, balancing manufacturing ease with shielding effectiveness

Inventive Principle:

Principle #40Composite materials

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 solution effectively eliminates electromagnetic interference, thereby enhancing sound quality and providing a better listening experience for passengers on commercial aircraft.

Implementation Method 1

The present invention fulfills the above and other objects by providing a set of shielded headphones having speaker housings that are electroplated to create a Faraday cage around each speaker contained therein.

Methodology Applied

Scientific EffectFaraday cage: Faraday Cage

Data Source

PatentUS10531192B2Shielded headphones

Publication Date: 2020.01.07 LINSTOL USA LLC

AI summary

A set of shielded headphones (1) having speaker housings (6) that are electroplated to provide metallic surfaces to create a Faraday cage around each speaker (5) contained therein. The protective metallic encasement prevents electromagnetic radiation from interfering with the speakers.