Semi-Active Earplug Valve Adjusts Attenuation
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Solution Overview
Problem
Existing ear protection solutions, such as passive and active earplugs, require frequent removal and replacement to adjust sound attenuation levels, leading to reduced usage and potential hearing damage due to inconvenience, and active earplugs have high power consumption and short battery life.
Innovation Solution
A semi-active earplug device that switches between two or more attenuation levels using electrical current only when changing configurations, allowing remote control via a smartphone or external device, with a mechanism like a valve and actuator to adjust sound attenuation, reducing the need for physical removal and minimizing power usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If passive earplugs are used to provide sound attenuation, then hearing protection is improved, but the device cannot be adjusted to different attenuation levels without removal and replacement
Solution Approach 1:
The patent applies a movable valve mechanism that can dynamically adjust the degree of occlusion of the sound channel. The valve transitions between different positions (first position with higher attenuation, second position with lower attenuation) to provide adjustable sound protection without removing the earplug, thus combining reliable hearing protection with adaptability to different noise environments.
2Adaptability or versatility
If active earplugs with electronic control circuitry are used to provide adaptive attenuation, then adaptability to different sound levels is improved, but power consumption increases and battery life decreases
Solution Approach 1:
The patent replaces the electronic control circuitry of active earplugs with a mechanical valve system controlled by a simple actuator. This mechanical substitution eliminates the need for continuous power consumption while maintaining the ability to adjust attenuation levels, thus preserving adaptability while dramatically reducing energy usage and extending battery life.
Solution Approach 2:
The patent uses periodic or on-demand actuation of the valve rather than continuous electronic control. The actuator is activated only when attenuation level changes are needed, allowing the system to maintain adaptability while consuming minimal energy during operation, thereby extending battery life significantly compared to continuously powered active earplugs.
3Adaptability or versatility
If active earplugs are used to provide adjustable attenuation, then adaptability is improved, but device complexity increases
Solution Approach 1:
The patent replaces complex electronic components (microphones, speakers, control circuits) with a simplified mechanical valve and actuator system. This substitution maintains the essential function of adjustable attenuation while dramatically reducing device complexity, making the earplug easier to manufacture, maintain, and operate.
4Adaptability or versatility
If earplugs are frequently removed and replaced to adjust attenuation levels, then adaptability is maintained, but user compliance decreases and hearing damage risk increases
Solution Approach 1:
The patent incorporates a movable valve mechanism that can be adjusted between different attenuation levels while the earplug remains in place. This dynamic adjustment capability allows users to adapt to different noise environments without removing the device, significantly improving ease of operation and user compliance while maintaining continuous hearing protection.
Solution Approach 2:
The earplug design allows users to independently adjust the attenuation level using an actuator mechanism without needing to remove or replace the device. This self-service adjustment capability empowers users to maintain appropriate protection while adapting to changing environments, thereby improving compliance and reducing the risk of hearing damage from improper usage.
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 device provides improved user compliance by eliminating the need for frequent removal and replacement, extending battery life, and offering customizable sound protection in various environments, thus enhancing hearing safety with reduced power consumption and increased convenience.
Implementation Method 1
said attenuating arrangement comprises a valve (14) and an actuator (12)... switches between two or more attenuation levels using electrical current only when changing configurations
Implementation Method 2
the attenuating arrangement only uses electrical current to switch between the configurations but does not draw current during the rest of its operation
Data Source
Figure 1~2
Figure 3
AI summary
A device (2) for insertion into an ear canal of a mammalian subject defines at least one sound path (16) therethrough. The sound path (16) has an attenuating arrangement (14) therein which has a first configuration having a first level of attenuation and a second configuration having a second level of attenuation, higher than the first level. The attenuating arrangement (14) is such that upon application of an electrical control signal thereto, it is caused to change between the first and second configurations. The attenuating arrangement is stable in both first and second configurations such that the attenuating arrangement only draws electrical current from a power source when changing between the first and second configurations. The device further comprises a receiver (36) for receiving a command signal (34) from outside the device such that receipt of the command signal (34) causes the electrical control signal to be applied to said attenuating arrangement.