Hearing Aid Transducer Sensor Integration via Acoustic Pathway
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Solution Overview
Problem
Hearing assistance devices face integrity issues due to prolonged exposure to harsh environments, leading to blockages from substances like sweat and ear wax, which necessitates additional filters and protection elements, increasing size, complexity, and cost, and reducing user-friendliness.
Innovation Solution
Integrating environmental sensors, such as humidity and temperature sensors, into the existing acoustic pathway of hearing devices, eliminating the need for additional protection elements by exposing them to the ambient environment through the sound port, thus maintaining functionality without increasing the device's size or complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If additional environmental sensors are added to hearing assistance devices, then environment sensing capability is improved, but device complexity and size increase
Solution Approach 1:
The patent integrates environmental sensing capability into existing acoustic pathway components (microphone and receiver housings) that already have openings for acoustic signal transmission. These components serve dual functions: acoustic signal processing and environmental sensing, eliminating the need for separate sensor openings and reducing overall device complexity
Solution Approach 2:
The patent combines environmental sensors with existing acoustic components by positioning sensors within the microphone housing or receiver housing. The sensor opening is integrated into the same housing structure that accommodates acoustic components, merging multiple functions into a single integrated unit rather than adding separate components
2Reliability
If additional protection elements are added for environmental sensors, then sensor protection is improved, but device size and complexity increase
Solution Approach 1:
The existing housing structure that protects acoustic components is made to simultaneously protect environmental sensors. The same housing that encloses the microphone or receiver also encloses the environmental sensor, providing protection without requiring additional separate protection elements
Solution Approach 2:
The patent merges the protective function with the existing acoustic component housing. Instead of adding separate protection elements for sensors, the housing structure serves both acoustic and sensor protection functions, reducing overall device complexity while maintaining reliability
3Reliability
If additional filters are added for environmental sensors, then sensor protection from blockages is improved, but device size and complexity increase
Solution Approach 1:
The existing acoustic pathway filters that are already present in the device are made to simultaneously filter environmental sensors. The same filter that protects the microphone or receiver from blockages also protects the environmental sensor, eliminating the need for separate sensor filters
Solution Approach 2:
The patent combines the filtering function for acoustic signals and environmental sensors into a single filter system. The filter positioned in the acoustic pathway serves dual purposes: filtering acoustic signals and preventing blockages to environmental sensors through the shared opening
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 approach allows for environment sensing without additional filters, reducing the size, complexity, and cost of hearing devices while maintaining user-friendliness by utilizing the existing acoustic pathway for environmental sensing.
Implementation Method 1
Ambient sound pressure waves are picked up by the microphone and converted into electrical signals
Implementation Method 2
The processed signals drive the receiver, which delivers amplified (or otherwise processed) sound pressure waves to the ear canal
Implementation Method 3
The sound processor transmits stimulation data, as well as power from its power supply, to the implantable device by way of an inductive link
Data Source
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AI summary
An electro-acoustic transducer including a housing having an interior volume with first and second interior volume portions and a sound aperture that extends to the first interior volume, a diaphragm located between the first and second interior volumes, and an environmental sensor associated with the housing and having an inlet in fluid communication with the first interior volume.