Rotating Earpiece Electrode Orientation for EEG Signal Precision
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Solution Overview
Problem
Existing devices for measuring biological data, such as EEG signals, are complex to operate and lack precision due to restrictive replacement mechanisms and imprecise signal detection.
Innovation Solution
A device with an earpiece design featuring a cylindrical main body and a detachable endpiece with rotating electrodes, allowing for easy orientation and replacement without guide means, and utilizing annular electrical tracks for secure signal transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the device uses a detachable endpiece with rotating electrodes, then the ease of operation and signal targeting precision are improved, but the device complexity increases due to additional mounting mechanisms
Solution Approach 1:
The device is divided into a main body and a detachable endpiece, allowing the endpiece to be easily removed and replaced. This segmentation enables independent optimization of each component and simplifies operation while managing complexity through modular design.
Solution Approach 2:
The endpiece is made rotatable about the axis of revolution, allowing dynamic adjustment of electrode orientation toward specific brain zones. This dynamic capability improves signal targeting precision without requiring complex fixed positioning mechanisms for each electrode configuration.
2Adaptability or versatility
If annular electrical tracks are used for electrode connection, then the adaptability and signal transmission reliability are improved, but the manufacturing precision requirements increase
Solution Approach 1:
The annular electrical tracks are designed to work with endpieces in any circumferential orientation, making the connection system universal and adaptable. A single track configuration serves multiple electrode positions, eliminating the need for separate connection mechanisms for each orientation and improving versatility.
Solution Approach 2:
The electrical tracks are formed as annular (circular) paths around the cylindrical main body, matching the rotational symmetry of the endpiece. This curved geometry naturally accommodates rotation and provides consistent electrical contact regardless of the endpiece's angular position, enhancing adaptability.
3Measurement precision
If multiple electrodes are arranged on the endpiece outer surface, then the measurement precision is improved, but the device complexity and electrode replacement difficulty increase
Solution Approach 1:
Multiple electrodes are integrated onto a single endpiece component, which is then attached to the main body. This merging of multiple electrodes into one replaceable unit simplifies the overall device structure, reduces the number of separate components, and maintains measurement precision through multi-electrode capability.
Solution Approach 2:
The electrodes are grouped on a detachable endpiece that can be removed as a single unit. This segmentation allows all electrodes to be replaced simultaneously by simply detaching and reattaching the endpiece, reducing replacement complexity while maintaining the precision benefits of multiple electrodes.
Data Source
AI summary
A device for determining a physiological or psychological state of a mammal is disclosed. The device has at least one earpiece with a main body having a body of revolution with an axis of revolution, and an endpiece configured to be inserted into an ear canal. The endpiece has a cylindrical channel intended to receive a body of revolution for detachably mounting the endpiece on the main body, the endpiece being arranged to be movable in rotation about the axis of revolution in order to allow at least one electrode to be oriented toward a zone of the brain of the mammal, and the endpiece having a plurality of electrodes arranged on an outer surface of the endpiece, each electrode being configured to pick up an electrical signal in the ear canal of the mammal.