Hearing Aid Tumble Detection and Post-Fall Position Assessment
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Solution Overview
Problem
Hearing apparatus systems, such as hearing aids, face challenges in accurately detecting falls and determining the post-fall location of the device on the wearer, particularly for older users who may need assistance, as existing methods lack precision and reliability in assessing the situation after a tumble.
Innovation Solution
A method utilizing sensors like acceleration, position, and biosensors to capture and analyze variables indicative of a tumble, determining the device's position on the wearer post-fall, and triggering appropriate measures, including emergency alerts if necessary, to ensure accurate assessment and potential assistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a hearing apparatus is used to detect tumbles, then the wearer can be made aware of the tumble, but the accuracy of determining whether the wearer needs help is insufficient
Solution Approach 1:
The detection process is segmented into multiple stages: first detecting the tumble event itself, then separately determining the post-tumble wearing situation. This segmentation allows each stage to be optimized independently, improving overall detection accuracy while maintaining clear information flow.
Solution Approach 2:
The system performs preliminary tumble detection using first measured variables (acceleration, position) before assessing the wearing situation. This preliminary action triggers the subsequent detailed assessment only when necessary, reducing information loss by focusing resources on critical events.
2Measurement precision
If multiple sensors are used to capture measured variables, then the accuracy of tumble detection and position assessment is improved, but the device complexity increases
Solution Approach 1:
The hearing apparatus serves multiple functions: it detects tumbles, determines wearing situation, and provides hearing assistance. By making the device universal, the patent avoids adding separate dedicated sensors for each function, thereby improving measurement precision without proportionally increasing device complexity.
Solution Approach 2:
The patent combines tumble detection and wearing situation assessment functions within the existing hearing apparatus structure. Multiple measured variables (acceleration, position, temperature) are captured and processed together, merging multiple detection capabilities into a unified system that reduces overall complexity.
3Reliability
If the hearing apparatus continuously monitors wearing situation, then the accuracy of post-tumble assessment is improved, but the energy consumption increases
Solution Approach 1:
The system uses periodic monitoring of measured variables at defined time points (during tumble detection and after tumble) rather than continuous monitoring. This periodic approach maintains high reliability for critical assessments while significantly reducing energy consumption during normal operation.
Solution Approach 2:
The system performs preliminary tumble detection before initiating detailed wearing situation monitoring. This preliminary action allows the system to switch to high-power monitoring mode only when necessary, improving post-tumble assessment reliability while minimizing overall energy consumption through event-triggered operation.
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
Enhances the accuracy of tumble detection and post-fall assessment, reducing the risk of misinterpretation and enabling timely assistance by determining the device's position and potential wearer injury, thereby improving user safety.
Implementation Method 1
a first sensor, in particular an acceleration sensor, of the hearing apparatus captures a first measured variable, in particular an acceleration, at a first time point
Implementation Method 2
at least one further measured variable, in particular an acoustic feedback variable, is captured by the hearing apparatus at a second time point after the tumble
Data Source
AI summary
A method for operating a hearing apparatus system with at least one hearing apparatus uses a first sensor of the hearing apparatus to capture a first measured variable characteristic of an actual wearing situation. If the first measured variable and/or a variation over time derived therefrom satisfies at least one prescribed first criterion, it is inferred that the hearing apparatus has had a tumble. If the tumble is detected to have taken place, at least one further measured variable and/or a variation over time derived therefrom is captured, and the at least one further measured variable is used to ascertain whether the hearing apparatus is arranged on the head of a hearing device wearer after the tumble.