Wearable EMG Sensor Elastic Band Fatigue Compensation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional electromyogram sensor systems are not easily applicable to users with various physical features and fail to accurately predict intended motions due to errors from posture, movement, and fatigue, leading to imprecise motion recognition.
Innovation Solution
A wearable electromyogram sensor system utilizing an elastic band with multiple electrodes and an electromyogram sensor that includes an amplification and filtering module, movement measurement sensor, muscle fatigue measurement module, and controller to analyze bio-signals, predict motions before execution, and correct for fatigue, allowing precise motion recognition and application on different body parts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If an electromyogram sensor is applied to users with various physical features, then the system becomes more versatile, but the measurement precision deteriorates due to errors from posture, movement, and fatigue
Solution Approach 1:
The system incorporates a feedback mechanism where the controller continuously monitors bio-signals from multiple electrodes and adjusts measurements in real-time. The system uses the measured motion information and bio-signal patterns to compensate for errors caused by posture changes, movement artifacts, and muscle fatigue, thereby maintaining measurement precision across diverse physical features and conditions
Solution Approach 2:
The electromyogram sensor system is designed with multiple electrodes and a controller that can adapt to various body parts and user physical features. The system performs multiple functions including detecting muscle contraction, measuring motion information, and compensating for measurement errors, making it universally applicable to users with different physical characteristics while maintaining accuracy
2Measurement precision
If the electromyogram sensor system includes additional modules for movement measurement and fatigue detection, then the measurement precision improves, but the device complexity increases
Solution Approach 1:
The system merges multiple measurement functions into a single integrated electromyogram sensor assembly. The movement measurement sensor, muscle fatigue measurement module, and electromyogram electrodes are combined in one device, allowing simultaneous collection of multiple data types that are processed by a single controller to improve motion recognition accuracy without requiring separate complex systems
3Productivity
If the system predicts motion before execution using bio-signals, then the productivity improves, but the reliability may deteriorate due to prediction errors
Solution Approach 1:
The system performs preliminary detection of muscle contraction through bio-signals before the actual motion occurs. By analyzing the electrical activity of muscles using multiple electrodes, the system can predict intended motion in advance, enabling proactive response while maintaining reliability through continuous verification against actual motion data
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 easy application on various body parts, reduces errors due to fatigue, and improves motion recognition accuracy by predicting intended motions and reflecting movement and posture, enhancing the system's reliability.
Implementation Method 1
an electromyogram sensor serving to sense current changes which occur due to movement of muscles
Implementation Method 2
an elastic band having a plurality of electrodes installed through a surface
Data Source
AI summary
A wearable electromyogram sensor system is provided. The wearable electromyogram sensor system includes: an elastic band having a plurality of electrodes; an electromyogram sensor including an electrode connected to an electrode of the band so as to receive a bio-signal related to contraction of a muscle, and configured to sense a change of motion information through the bio-signal or previously sense the change of the motion information before the motion information is changed; and a fixing unit fixing the electromyogram sensor to the band. The electrode of the electromyogram sensor is connected to an electrode at an arbitrary position of the band.