Dual Proximity Sensing in Hearing Earpieces for Low-Power Mode Switching
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Solution Overview
Problem
Hearing devices face challenges in minimizing power consumption due to the small dimensions of their components, which limits the energy available and requires efficient switching between standby and active modes without the use of costly operator controls.
Innovation Solution
A hearing device with an earpiece featuring a first and second proximity sensor, where the control unit shifts the device into active or inactive modes based on changes in the proximity signals from these sensors, allowing for user-controlled operation without separate costly controls, by utilizing capacitive or tactile sensors configured one behind the other to detect insertion and removal into the auditory canal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a switching device is added to control operating modes, then ease of operation is improved, but device complexity increases
Solution Approach 1:
The hearing device automatically detects insertion and removal through capacitive proximity sensors and autonomously switches between operating modes without requiring manual user input. The system serves itself by using the user's insertion action as the trigger for mode changes, eliminating the need for separate switching devices.
Solution Approach 2:
The patent replaces mechanical switching devices with capacitive proximity sensors that detect changes in electrical capacitance caused by insertion into the ear canal. This substitution of mechanical control with electrical field-based sensing reduces device complexity while maintaining ease of operation.
2Use of energy by moving object
If power consumption is reduced to minimum levels, then use of energy is improved, but reliability of mode transitions may worsen
Solution Approach 1:
The system uses periodic detection cycles with capacitive proximity sensors to monitor insertion status. By implementing detection at specific intervals and using time-based evaluation of capacitance changes, the system reliably determines mode transitions while minimizing continuous power consumption of the sensors.
Solution Approach 2:
The capacitive proximity sensors provide continuous feedback about the insertion state to the control unit. This feedback mechanism allows the system to reliably detect when insertion has occurred and automatically switch modes, ensuring reliable operation even with minimal power consumption from the sensors.
3Volume of moving object
If the hearing device is made more compact, then volume is improved, but use of energy worsens due to limited power source capacity
Solution Approach 1:
The capacitive proximity sensors operate in periodic detection cycles rather than continuously, significantly reducing their power consumption. This allows the compact hearing device to maintain reliable insertion detection functionality while preserving limited battery capacity for audio processing and output.
Solution Approach 2:
The insertion detection system uses the user's own insertion action to trigger mode changes, eliminating the need for additional power-consuming components like buttons or switches. The system leverages the physical act of insertion itself as the control input, reducing overall energy requirements in the compact device.
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 simple user-controlled operation modes with minimal power consumption, reducing the need for additional controls and enhancing the reliability of mode transitions, thereby conserving energy and improving user experience.
Implementation Method 1
the first proximity sensor is configured to transmit a first proximity signal to the control unit... the first proximity sensor and the second proximity sensor are disposed in the earpiece one behind the other with respect to an insertion direction of the hearing device into the external auditory canal
Implementation Method 2
the second proximity sensor is configured to transmit a second proximity signal to the control unit... a change in the second proximity signal and a change in the first proximity signal, which change in the first proximity signal follows at a predetermined time interval after the change in the second proximity signal
Data Source
AI summary
A hearing device, in particular a hearing aid device, includes an earpiece with a first proximity sensor, a second proximity sensor and a control unit. The first proximity sensor is configured to transfer a first proximity signal to the control unit and the second proximity sensor is configured to transfer a second proximity signal to the control unit. The earpiece can be inserted into the external auditory canal of a user of the hearing device for operating the hearing device. The control unit is configured to control an operating mode of the hearing device according to changes in the first proximity signal and the second proximity signal. A method for controlling a hearing device is also provided.