Otological Receiver Resonance Tuning for Stable Carrier Reception
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Solution Overview
Problem
Existing receiving systems for otological devices, such as hearing aids, face challenges in tuning and retuning the resonant frequency due to component tolerances and environmental changes, which affect transmission quality and range, and are not suitable for space-constrained or high-power applications.
Innovation Solution
A receiving system with a frequency controller that detects and adjusts the reception frequency by generating an excitation signal to stimulate the vibration receiver, using feedback to determine the natural frequency and adjust it to a predetermined value, potentially using a look-up table for assignment rules, and employing time-limited pulse or noise signals to stimulate the receiver.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a PLL receiver is used to stabilize reception frequency, then frequency stability is improved, but device complexity and power consumption increase
Solution Approach 1:
The patent replaces the mechanical/electronic PLL receiver system with an acoustic resonance-based frequency detection system. The vibration receiver (microphone) naturally resonates at its characteristic frequency, and this resonance is detected and used to tune the reception frequency, eliminating the need for complex PLL circuitry while achieving frequency stability.
Solution Approach 2:
The vibration receiver's own natural resonance frequency is used as the reference for tuning the reception frequency. The system leverages the inherent physical property of the vibration receiver rather than requiring external frequency stabilization components, allowing the system to self-determine its optimal operating frequency.
2Manufacturing precision
If component tolerances and temperature changes are considered, then initial tuning is required, but subsequent retuning becomes necessary due to drift
Solution Approach 1:
The system continuously monitors the resonance frequency of the vibration receiver and uses this feedback to automatically adjust and retune the reception frequency. This closed-loop approach compensates for drift caused by temperature changes and component aging, maintaining frequency accuracy without requiring manual intervention.
Solution Approach 2:
The system performs frequency detection and tuning as a preliminary step before actual signal reception. By detecting the resonance frequency in advance and adjusting the reception frequency accordingly, the system ensures optimal tuning is established before communication begins, accounting for environmental conditions.
3Measurement precision
If the vibration receiver is excited to generate response vibration for frequency detection, then receiving frequency can be determined, but the actuation requires additional energy
Solution Approach 1:
The system uses periodic excitation signals at the expected resonance frequency to stimulate the vibration receiver. By applying energy in periodic bursts rather than continuously, the system can detect resonance with minimal energy consumption while still achieving accurate frequency determination.
Solution Approach 2:
The system exploits the natural mechanical vibration properties of the vibration receiver to determine frequency. By exciting the receiver and measuring its resonant response, the system can accurately determine the optimal reception frequency using the receiver's own mechanical characteristics rather than requiring additional sensing components.
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 precise tuning and retuning of the receiving frequency, improving transmission quality and range while being suitable for space-constrained and low-power applications, such as hearing aids, by leveraging the natural frequency of the receiver's oscillating circuit.
Implementation Method 1
The frequency controller is connected at least indirectly to the vibration receiver and is designed to generate an excitation signal and to excite the vibration receiver to oscillate by means of the excitation signal and thus to generate a response vibration with a response frequency
Data Source
AI summary
The system has an oscillating receiver indirectly connected with the frequency control (9,12,14,16). The oscillating is formed to generate a carrier signal and to activate the oscillating receiver by an excitation signal for oscillation. A return oscillation is activated with a return frequency and the receiving frequency is determined depending on the return oscillation. The activation signal is a feedback signal, generated in the oscillating receiver, to indirectly regenerate the oscillating receiver. An independent claim is also included for a method for an otological device for receiving a carrier signal.