A Wearable Detector for Simultaneous Finger Joint Motion Measurement

Area of Science:

• Biomedical Engineering
• Wearable Technology
• Sensor Technology

Background:

• Current finger joint motion measurement devices face limitations in accuracy, durability, and user comfort.
• Existing solutions often struggle with the compatibility of flexible substrates and rigid sensing components.
• External wiring in traditional devices compromises durability and user experience.

Purpose of the Study:

• To develop a wearable and stretchable detector for simultaneous finger joint motion measurement.
• To provide a feasible technical solution addressing drawbacks of current measurement devices.
• To enhance the accuracy, durability, and user compatibility of hand motion detection systems.

Main Methods:

• Integration of 14 custom-made bending sensors and a high-accuracy inertial measurement unit into a glove.
• Utilizing a three-silicone material glove support with varying elasticity for substrate-component compatibility.
• Implementing a two-section electrical connection to improve durability and overcome external wire issues.

Main Results:

• The wearable detector demonstrates a good user experience with minimal force exertion on fingers.
• The device exhibits strong durability, functioning properly after tens of thousands of bending cycles.
• Single sensor tests confirm high accuracy, and the overall system shows excellent hand motion detection performance with reasonable measurement error across different hand sizes.

Conclusions:

• The developed wearable detector offers a robust and accurate solution for simultaneous finger joint motion measurement.
• The innovative glove design and electrical connections enhance durability and user compatibility.
• The device shows significant potential for widespread clinical applications in rehabilitation and diagnostics.