Hearing Aid Power Scheduler for Wireless Communication
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Solution Overview
Problem
Conventional hearing aids face challenges in efficiently managing power consumption for wireless communication, particularly with small batteries that have high internal resistance, leading to voltage drops and limited operational time due to high current demands during transmission and reception.
Innovation Solution
Incorporating a scheduler that manages communication tasks based on power supply state, using a capacitor to deliver peak currents and a resistor to limit current draw, and implementing a frequency hopping algorithm for efficient wireless communication, allowing the hearing aid to switch between frequency channels to minimize noise sensitivity and coexist with other wireless networks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If wireless communication is performed with high current demand during transmission and reception, then communication reliability is improved, but voltage drops occur due to high internal resistance of small batteries
Solution Approach 1:
The hearing aid performs measurements of the power supply state before initiating wireless communication tasks. The scheduler uses these pre-measured power supply characteristics to determine whether communication can proceed, preventing voltage drops by avoiding communication when power supply capacity is insufficient.
Solution Approach 2:
The system continuously measures the power supply state and uses this feedback information to control wireless communication operations. The scheduler adjusts communication behavior based on real-time power supply measurements, creating a closed-loop control system that maintains voltage stability while enabling communication when possible.
2Adaptability or versatility
If wireless communication tasks are performed frequently, then communication functionality is improved, but operational time is reduced due to high power consumption
Solution Approach 1:
The scheduler dynamically adjusts wireless communication operations based on real-time power supply state measurements. When power supply capacity is sufficient, communication tasks are permitted; when capacity is low, communication is restricted. This dynamic adaptation allows the system to maximize communication functionality within the constraints of battery capacity, extending operational time while maintaining usability.
3Adaptability or versatility
If multiple communication protocols are supported, then adaptability is improved, but device complexity increases
Solution Approach 1:
The wireless communication unit is designed with multi-functionality to support multiple communication protocols (Bluetooth, Bluetooth Low Energy, and other wireless protocols). This universal design allows a single communication unit to handle various protocol requirements, achieving protocol compatibility without proportionally increasing device complexity.
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 extends the operational time of the hearing aid by optimizing power use, ensuring reliable wireless communication and reducing interference with other networks, while maintaining compact size and low power consumption.
Implementation Method 1
using a capacitor to deliver peak currents
Implementation Method 2
using a resistor to limit current draw
Implementation Method 3
implementing a frequency hopping algorithm for efficient wireless communication, allowing the hearing aid to switch between frequency channels to minimize noise sensitivity
Data Source
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AI summary
A hearing aid is provided comprising a power supply connected to power supply a hearing aid circuit including a wireless communication unit configured to communicate with another device and a scheduler configured to receive communication requests from communication tasks and schedule each of the communication tasks based on communication task priorities and a state of the power supply.