OVERVIEW
EMGsensBLE is a single-channel ultra-lightweight wireless sensor for surface electromyography and motion recording. The device is attached directly to the skin and transmits data to a PC or mobile application via BLE 5.0.
The sensor provides EMG acquisition with a sampling rate of up to 5 kHz, envelope EMG recording, and data from built-in sensors (3D accelerometer and gyroscope).
It supports operation with both integrated electrodes and external disposable electrodes via an adapter. A vibrotactile stimulator can be used for experiments involving feedback.
EMGsensBLE is applied in education, research, and development in the fields of EMG, brain-computer interfaces, rehabilitation, biofeedback, neuromarketing, and neurogaming. Its lightweight housing (6 g) and built-in rechargeable battery provide more than 15 hours of continuous operation.
SOFTWARE
The EMGsensBLE sensor operates on the LabStudio software.
The software supports synchronous connection of multiple sensors, real-time signal visualization, experiment management, and an integrated database for storing recordings.
Data can be saved in open formats (EDF, BDF, CSV, XLSX) and streamed via Lab Streaming Layer (LSL) for further analysis in external environments (MATLAB, EEGLAB, EDFBrowser, and others).
An SDK is available upon request for integration into custom PC and mobile applications.
SPECIFICATION
| EMG channel | |
| EMG channels | 1 monopolar |
| Input dinamic range | ± 3.9 mV |
| Analog-to-digital conversion bit size | 16 bit |
| Sampling rate | 1000 Hz, 2000 Hz, 5000 Hz |
| Passband at -3 dB | from 22 to 470 Hz |
| Input impedance (at passband) | > 2 MOhm |
| Noise | 15 μV (p‑p max) |
| Envelope calculation method |
|
| Sampling rate of envelope | 100 Hz |
| Data resolution of envelope | 16 bit |
| Built-in accelerometer and gyroscope | |
| Accelerometer channels | orthogonal X, Y, Z |
| Accelerometer range | ±2, ±4, ±8, ±16 G |
| Gyro channels | orthogonal y, P, R |
| Gyro range | ±125, ±250, ±500, ±1000, ±2000 dps (degrees per second) |
| Sampling rate | 100 Hz |
| Accelerometer events |
|
| Vibration stimulator | |
| Duration of stimulation cycle | from 0 to 2 sec |
| Power supply for the stimulator | 3V, up to 100mA |
| EMGsensBLE device | |
| Button events | press |
| Mode indicator | full color RGB, smart control from application software |
| Power | Internal Li-ion battery (rechargeable) |
| Nominal battery voltage | 3.7 V |
| Nominal battery capacity | 0.12 Ah |
| Number of batteries in one unit of product packaging | 1 pc. |
| Charging of internal battery | from +5V USB adapter, 500 mA |
| Full battery charge time | ≤ 2.5 hours |
| Type of connector for the charger | microUSB |
| Work from full battery | more 15 hours |
| Check of battery status | smart by charge/discharge counting |
| Firmware update | via Bluetooth using a mobile application |
| Wireless data interface | BLE 5.0 |
| Wireless certification | CE, FCC USA, Canada, Japan, Korea, Taiwan |
| Enclosure dimensions |
24 x 24 x 16 mm |
| Net weight | 6 g |
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