Integrated Earplug with Electronic Hearing Device
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Solution Overview
Problem
Current hearing protection devices do not allow easy switching between hearing aid functionality and hearing protection functionality, often requiring manual operation and lacking an integrated electronic hearing device, which complicates access to quality sound filtering and noise obstruction.
Innovation Solution
A custom-molded earplug system with an integrated electronic hearing device that includes a microphone, amplifier, and a noise dosimeter, allowing for automatic sound attenuation during loud noises and easy switching between hearing and protection modes, along with a short-range communication interface for wireless connectivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual operation of movable structure is used to switch between hearing aid and hearing protection modes, then device complexity is reduced, but ease of operation deteriorates due to requiring manual sliding or rotation
Solution Approach 1:
The patent replaces manual mechanical operation (sliding or rotating movable structures) with an electronic switching mechanism. A switch assembly with contact elements and a movable component detects user input and electronically controls the transition between hearing aid mode and hearing protection mode, eliminating the need for manual manipulation of acoustic pathways while maintaining mode-switching functionality.
Solution Approach 2:
The patent introduces a movable structure that acts as an intermediary between the user's input and the acoustic pathways. This structure, when positioned in different locations within the earplug, selectively blocks or opens sound transmission paths to achieve mode switching without requiring the user to directly manipulate complex mechanical components.
2Adaptability or versatility
If electronic hearing device is integrated within the hearing protection system, then adaptability improves by enabling automatic mode switching, but device complexity increases
Solution Approach 1:
The patent integrates multiple functions into a single earplug device: hearing protection (noise blocking), hearing aid functionality (sound amplification), and automatic mode switching. The electronic hearing device includes a microphone, speaker, and control circuitry that work together with the hearing protection components to provide both hearing aid and hearing protection modes within one device, eliminating the need for separate devices.
Solution Approach 2:
The patent employs a nested structure where the electronic hearing device is housed within the earplug body. The electronic components (microphone, speaker, battery, circuit board) are compactly arranged and nested within the earplug's internal cavity, allowing the electronic hearing device to be integrated without significantly increasing the external dimensions of the hearing protection system.
3Ease of operation
If custom-molded earplug design is used, then comfort and security improve, but manufacturing precision requirements increase
Solution Approach 1:
The patent utilizes custom-molded earplugs where the physical parameters (shape, size, curvature) are customized to match the individual user's ear canal anatomy. This customization is achieved through molding processes that replicate the user's ear impression, ensuring optimal comfort, security, and acoustic seal without requiring extreme manufacturing precision in the electronic components themselves.
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
Enables seamless switching between hearing and protection modes, providing comfortable, secure, and discreet hearing protection while automatically managing noise exposure to prevent hearing damage, with the ability to measure and download noise exposure data.
Implementation Method 1
a microphone for receiving external sound and generating an electrical sound signal based thereon
Implementation Method 2
electronics that amplify the electrical sound signal
Implementation Method 3
a speaker assembly for generating sound based on the electrical sound signal
Implementation Method 4
a sound tube having a first opening disposed within the recessed cavity of the first portion, and a second opening disposed at the distal end of the second portion
Data Source
AI summary
A hearing protection system includes an earplug and an electronic hearing device inserted into a cavity in the earplug. The electronic hearing device includes electronics that incorporate digital signal processing to provide sound amplification and fast compression programming to shut off sound amplification to protect the user when a loud noise is detected. The housing of the electronic hearing device has a sound aperture for emitting the sound from a speaker assembly. The sound aperture is aligned with an opening of a sound tube in the earplug so that sound generated by the speaker assembly can propagate through the sound tube to the user's ear canal. The electronic hearing device may include a short-range communication interface for receiving a short-range communication signal that carries information. The system may include a noise dosimeter that generates noise exposure measurement data related to a dose of noise exposure over a period of time.