Wireless Device Upper Housing for Hearing Aid EMC
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Wireless communication devices often interfere with hearing aid devices due to electromagnetic pulses from transmitter circuitry, causing audible noise and degrading sound quality, and existing solutions either reduce radiation performance or burden the user with shielding, which are not practical.
Innovation Solution
A wireless communication device design that minimizes electromagnetic interference by using non-electromagnetic conductive materials in the upper portion, including the ear piece, and repositions electromagnetic energy away from the ear piece, using a division between a lower and upper housing to separate electromagnetic conductive components from the ear piece, allowing for alternative signal transmission methods like acoustic or optical transducers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If electromagnetic shielding is provided on hearing aid devices to protect from interference, then electromagnetic compatibility is improved, but device complexity and user burden increase
Solution Approach 1:
The patent converts the harmful electromagnetic energy into a beneficial configuration by using non-electromagnetic conductive materials in the upper portion to redirect electromagnetic energy away from the ear piece area. This approach eliminates the need for shielding on hearing aid devices while maintaining electromagnetic compatibility, thus converting the harmful interference problem into a design advantage.
Solution Approach 2:
The patent introduces non-electromagnetic conductive materials as an intermediary between the transmitter circuitry and the ear piece. These materials serve as a mediator that allows electromagnetic energy to be conducted away from the ear piece area without directly interfering with hearing aid devices, thus resolving the contradiction between maintaining radiation performance and ensuring electromagnetic compatibility.
2Object-affected harmful factors
If radiation performance is reduced to achieve hearing aid compatibility, then electromagnetic interference is minimized, but wireless communication performance deteriorates
Solution Approach 1:
The patent divides the wireless communication device into two distinct portions: a lower portion with electromagnetic conductive components and an upper portion with non-electromagnetic conductive materials. This segmentation allows the device to maintain overall radiation performance while creating an electromagnetic-friendly zone around the ear piece area, thus resolving the contradiction between radiation performance and electromagnetic compatibility.
Solution Approach 2:
The patent applies different material properties to different portions of the device: electromagnetic conductive materials in the lower portion for radiation performance and non-electromagnetic conductive materials in the upper portion for electromagnetic compatibility. This local differentiation allows each portion to optimize its function without compromising the other, thus resolving the contradiction between radiation performance and interference minimization.
3Productivity
If electromagnetic conductive materials are used in the upper portion near the ear piece, then electromagnetic interference with hearing aid devices increases, but signal transmission efficiency improves
Solution Approach 1:
The patent extracts electromagnetic conductive materials from the upper portion near the ear piece and replaces them with non-electromagnetic conductive materials. This extraction eliminates the source of electromagnetic interference in the critical ear piece area while maintaining signal transmission efficiency through alternative conduction paths in the lower portion, thus resolving the contradiction between signal efficiency and interference reduction.
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 solution effectively reduces electromagnetic interference with hearing aid devices while maintaining desirable radiation performance, ensuring compatibility and improved sound quality for users with hearing impairments.
Implementation Method 1
By controlling the material composition of the upper portion of the wireless communication device, the electromagnetic energy level at the ear piece may be minimized. In particular, electromagnetic energy levels may be minimized at areas where non-electromagnetic conductive materials, such as non-metallic materials, are used.
Implementation Method 2
The passage couples the acoustic transducer of the lower housing to the ear piece of the upper house.
Data Source
AI summary
A wireless communication device for minimizing electromagnetic interference with hearing aid devices. The wireless communication device comprises a lower housing (112, 312, 412, 512, 612) and an upper housing (114, 314, 414, 514, 514) adjacent to the lower housing. The lower housing (112, 312, 412, 512, 612) supports a wireless transceiver (108, 202) capable of producing an electromagnetic field, and the upper housing includes an ear piece (104, 504, 604). For one embodiment the upper housing (114, 314, 514, 614) and all components supported by the upper housing consist of non-electromagnetic conductive material. For other embodiments, all electromagnetic conductive components of the upper housing (414, 514, 614) are restricted to an area adjacent to an ear piece (104, 504, 604) of the upper housing.