Electrooculography Data Processing for Spectacle Electrode Position Variations
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Solution Overview
Problem
Wearable electrooculography devices face issues due to variations in user wearing position, leading to inconsistent eye potential measurements, as the position of the bioelectrode can change, affecting the accuracy of eye motion data.
Innovation Solution
A wearable-device-compatible-electrooculography-data-processing device that continuously acquires and corrects eye movement and eye potential data using continuously measured eye movement amount continuity data, allowing for accurate data calibration regardless of electrode position changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the wearable device is designed with fixed electrode positions, then the device structure is simple, but the measurement accuracy deteriorates when users wear the device at different positions
Solution Approach 1:
The patent applies dynamics by transitioning from fixed electrode positions to movable/electrode positions that can adapt to different wearing locations. The system dynamically adjusts or compensates for electrode position variations through continuous measurement and position detection, allowing the device to maintain measurement accuracy regardless of where the user wears the wearable device on their body.
Solution Approach 2:
The patent utilizes parameter changes by continuously monitoring eye potential signals and detecting position variations. When the electrode position changes relative to the body, the system changes the measurement parameters and processing methods to compensate for the position shift, thereby maintaining consistent measurement accuracy across different wearing positions.
2Ease of operation
If the electrode position is allowed to change freely, then the ease of operation improves, but the measurement precision deteriorates due to position variations
Solution Approach 1:
The patent implements feedback by continuously monitoring the eye potential signal characteristics and detecting changes that indicate position variations. The system provides feedback about the electrode's actual position and adjusts the measurement processing in real-time, allowing users to wear the device freely while maintaining measurement precision through active compensation.
Solution Approach 2:
The patent replaces mechanical position adjustment mechanisms with signal processing methods. Instead of mechanically constraining the electrode to a fixed position, the system uses electronic and computational methods to compensate for position variations, substituting mechanical precision requirements with software-based correction algorithms.
3Reliability
If continuous measurement is performed to detect position changes, then the reliability improves, but the use of energy increases
Solution Approach 1:
The patent applies periodic action by performing continuous measurement at optimized intervals rather than continuously without pause. The system periodically samples the eye potential signal and detects position changes at strategic moments, reducing overall energy consumption while maintaining sufficient data consistency for reliable measurements.
Solution Approach 2:
The patent ensures continuity of useful action by maintaining continuous readiness to detect and compensate for position changes. The measurement system remains active and prepared to adjust instantaneously when position variations occur, ensuring uninterrupted data reliability without requiring constant high-power 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
Enables reliable evaluation of driving margins and other applications by ensuring consistent eye motion data, even when the electrode position changes, improving data accuracy and usability.
Implementation Method 1
electrooculography measuring devices which measure the eye potential have been examined
Data Source
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AI summary
A wearable-device-compatible-electrooculography-data-processing device that can cope with a problem of a wearable device in which, depending on a position of an electrode that measures an eye potential while the wearable device is worn, a measured value of the eye potential differs is provided. A wearable-device-compatible-electrooculography-data-processing device 20 continuously acquires wearable-electrooculography-continuity data from an electrooculography measuring device 30 provided in a spectacle-type-wearable device 1 that a user wears, the electrooculography measuring device 30 configured to continuously measure an eye potential of the user to provide the wearable-electrooculography-continuity data based on the continuously measured eye potential, and the wearable-device-compatible-electrooculography-data-processing device 20 acquires, based on the wearable-electrooculography-continuity data acquired while the spectacle-type-wearable device 1 is used, continuous wearable-eye-movement-amount-continuity data related to an eye movement amount of the user while the spectacle-type-wearable device 1 is used.