Hearing Aid Power Control via Inertial Sensor Motion Detection
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Solution Overview
Problem
There is a need for an improved hearing aid and method to control its power mode effectively, as existing solutions do not adequately automate the switching to low power or off modes when the device is not in use, particularly for users who find it difficult to handle the power off button.
Innovation Solution
The hearing aid incorporates an inertial sensor, motion detection unit, power mode controller, and correlation analyzer unit that detect impact shocks and share shock data via a wireless interface to synchronize power mode changes, allowing automatic switching to low power or off modes when both devices are not in use, along with features like feedback gain analysis and NFC communication to confirm non-use scenarios.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If automatic power off is implemented using motion sensors, then user convenience is improved, but false activation by environmental vibrations may occur
Solution Approach 1:
The patent combines data from multiple sensors (accelerometer, gyroscope, barometer) to make power mode decisions. By merging multiple detection sources, the system achieves more reliable detection that distinguishes between environmental vibrations and actual non-wear conditions, resolving the contradiction between automatic operation and false activation.
Solution Approach 2:
The system continuously monitors sensor data and adjusts power mode based on feedback from the environment. The control unit processes ongoing sensor input to determine whether to activate power saving mode, creating a feedback loop that improves reliability by confirming non-wear conditions through multiple detection cycles rather than single-event triggering.
2Reliability
If multiple sensors are used for accurate non-use detection, then reliability is improved, but device complexity increases
Solution Approach 1:
The sensor system serves multiple functions: the accelerometer and gyroscope detect both motion patterns and orientation, while the barometer detects environmental pressure changes. This multi-functionality allows accurate non-use detection without proportionally increasing complexity, as each sensor contributes to multiple detection objectives simultaneously.
Solution Approach 2:
The control unit automatically processes sensor data and makes power mode decisions without user intervention. The system self-manages the complexity of coordinating multiple sensors by implementing automated algorithms that interpret sensor combinations, reducing the perceived complexity for the user while maintaining high detection accuracy.
3Measurement precision
If continuous monitoring is performed to distinguish wear from non-wear states, then measurement precision is improved, but energy consumption increases
Solution Approach 1:
The system performs monitoring at periodic intervals rather than continuously. The control unit checks sensor data at defined time points to determine wear state, reducing energy consumption while maintaining sufficient measurement precision to distinguish between wear and non-wear conditions through regular sampling.
Solution Approach 2:
The monitoring intensity dynamically adjusts based on detected patterns. When the system detects stable conditions indicating clear wear or non-wear states, it may reduce monitoring frequency to conserve energy. The dynamics of monitoring allow the system to maintain precision when needed while reducing energy consumption during stable periods.
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 solution enables efficient battery power conservation by accurately determining when the hearing aid is not in use, ensuring it switches to low power or off modes reliably, even in various environments, thus enhancing user convenience and battery life.
Implementation Method 1
detect an impact shock, in particular generated by an impact of a cover of a storage box or charger against the hearing aid when closing the cover
Data Source
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AI summary
The invention relates to a hearing aid (1), comprising: - an inertial sensor (6) for detecting movement of the hearing aid (1), - a power mode controller (8) connected to the inertial sensor (6) through a threshold comparison unit (11) and adapted to switch the hearing aid (1) off or into a low power mode if the threshold comparison unit (11) detects that a characteristic of a signal comprising information on the movement detected by the inertial sensor (6) is below a certain threshold. Moreover, the invention relates to a method for controlling a power mode of a hearing aid (1).