Myoelectric wristband 1
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Simplified Design Requirements for the Myoelectric Wristband
1. Project Positioning
This product is a wearable surface electromyography (sEMG) device featuring forearm‑mounted dry electrodes, capable of acquiring sEMG signals to enable AR interaction, virtual control, and scientific data acquisition. Unlike conventional smartwatches, its design centers on stable sEMG signal acquisition and adopts a lightweight, modular architecture. Refer to the me-ta Neural Band, adhering to the principle of sensor priority.
2. Core Hardware Boundaries
The electronic module’s internal hardware footprint is 30×30×8 mm, with the enclosure designed to accommodate wall‑thickness clearances, sealing requirements, charging interfaces, and antenna clearance. Metal shielding is prohibited within the 2.4 GHz ceramic antenna area. Magnetic‑contact or pin‑type charging is employed, with corrosion‑resistant contacts. The PCB and battery are fitted with cushioning stops, and a concealed debugging interface is provided.
3. Ergonomic wearing requirements
Worn on the forearm, 20–35mm proximal to the wrist crease; adjustable circumference of 145–205 mm, strap width 22 mm, sensor‑lined section 20mm wide. When worn, there is no noticeable slippage during actions such as clenching the fist or rotating the wrist, and the electrode pressure is even, without causing skin discomfort; the design accommodates both left and right hands, reducing production costs.
4. Four major modular structures
Rear electronic module (containing active components): integrates a PCB, battery, IMU, haptic feedback, and LEDs; features a low-profile, rounded‑edge form factor with no large display, and is mounted on the lateral aspect of the forearm to avoid compressing the sensor‑sensitive area.
Replaceable passive-sensing liner: integrates electrode carriers and passive conductors that can be individually replaced to accommodate diverse wearing requirements.
Soft-electrode island: single capsule/elliptical electrode contact area 8 mm, with a protrusion of 0.6–0.9 mm,
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