Temperature Sensing for Ear Placement in Hearing Devices
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Solution Overview
Problem
Existing hearing devices struggle to determine whether they are positioned on the left or right side of a wearer, which is crucial for configuring gain settings and streaming stereo audio correctly.
Innovation Solution
The implementation of temperature sensing systems within hearing devices, utilizing two sensors on opposite sides of the housing, to differentiate between left and right ear placement based on temperature measurements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If hearing devices are made uniform and adaptable to fit either ear, then device versatility and ease of manufacture are improved, but the ability to determine left-right placement is lost
Solution Approach 1:
Temperature sensors are introduced as intermediary elements that detect thermal differences between left and right ears. These sensors act as mediators that provide placement information without requiring asymmetric device design, allowing the device to determine orientation through thermal field measurement rather than structural asymmetry.
Solution Approach 2:
The patent replaces mechanical or structural asymmetry (physical left-right differentiation) with a thermal sensing system. Instead of using asymmetric housing shapes or mechanical features to indicate orientation, the system uses temperature measurements to detect placement, substituting a thermal field-based approach for traditional mechanical differentiation.
2Measurement precision
If temperature sensors are added to determine left-right placement, then placement detection accuracy is improved, but device complexity increases
Solution Approach 1:
The temperature sensors serve multiple functions: they detect left-right placement orientation and simultaneously monitor body temperature for health-related notifications. This multi-functionality reduces the need for separate sensor systems, offsetting the complexity increase by consolidating sensing capabilities into a single sensor type that performs multiple detection tasks.
Solution Approach 2:
The hearing device uses its own operational environment (the wearer's ear) as the source of detection signals. The body heat from the wearer's ear naturally provides the thermal signature that the sensors detect, eliminating the need for external calibration sources or additional active components. The system leverages the physiological environment itself for sensing purposes.
3Ease of operation
If asymmetric design features are used to indicate left-right placement, then placement determination is simplified, but manufacturing complexity and device customization increase
Solution Approach 1:
The patent applies asymmetry not to the physical structure of the device housing, but to the thermal field detection pattern. The sensors detect asymmetric thermal signatures that naturally occur in left versus right ears, creating a functional asymmetry that aids placement determination without requiring asymmetric manufacturing of the device itself.
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 allows for accurate determination of the hearing device's side placement, enabling proper gain settings, correct stereo audio streaming, and providing notifications for abnormal body temperatures.
Implementation Method 1
obtain a first temperature measurement from a first sensor on or in a first side of the housing, obtain a second temperature measurement from a second sensor on or in a second side of the housing
Data Source
AI summary
Disclosed herein, among other things, are systems and methods for temperature detection for hearing device applications. A method includes obtaining a first temperature measurement from a first sensor from a first side of a housing of a hearing device, and obtaining a second temperature measurement from a second sensor from a second side of the housing. The first temperature measurement is compared to the second temperature measurement, and a determination is made whether the hearing device is positioned on a right side or a left side of a wearer of the hearing device, based on the comparison. The hearing device is configured as a right device or a left device based on the determination.