biosignalsplux Force+EMG

Portable wireless force platform & EMG system with streaming and local storage capabilities for biomechanics in- & out-of-the-lab.

Included Hardware
  • 2x wireless 4-channel hubs
  • 16GB internal memory
  • 1x force platform (aluminum; 45x45cm)
  • 4x load cells (pre-mounted on the platform)
  • 4x EMG sensors
  • 1x synchronization kit
  • 24x pre-gelled & disposable electrodes
  • 1x Bluetooth dongle
  • 1x medical-grade charger
  • 1x carrying bag
Included Software (Digital Content)
  • OpenSignals for real-time data acquisition & visualization
  • OpenSignals add-ons:
  • Cross-platform APIs for software development in Python, C++, Visual C#, Java, Android & MATLAB

biosignalsplux Force + EMG comes with 2 biosignalsplux hubs to acquire data from 4 load cell sensors and 4 EMG sensors. The load cell sensors are connected to one 4-channel biosignalsplux hub placed on the back of the aluminum plate to acquire reliable data about force and weight distribution in a wide range of applications including jump analysis, center of mass distri- bution, weight assessment, force production capacity, and others.

Additionally, this kit comes with a second biosignalsplux hub and 4 EMG sensors which allow the monitoring of different muscles and/or muscle groups during the performed movements. This kit includes the EMG analysis, Force data, and Video Synchronization add-ons for the OpenSignals (r)evolution software to process and synchronize the acquired data with video recordings.

Hub
Analog ports 4 generic inputs
Auxiliary ports 1 ground
Resolution Up to 16-bit (per channel)
Sampling rate Up to 3kHz (per channel)
Communication Bluetooth Class II
Range Up to ~10m (extendable)
Internal memory 16GB
Battery life ~10h streaming; ~24h logging
Size 85x54x10mm
Weight 45g (without sensors)
Color White
Force Platform
Material: Sturdy aluminum
Size: 45cm x 45cm
Height: Adjustable to level out the platform (up to 10 cm)
Weight: 13kg
# of Load Cells: 4 (one in each corner)
Maximum load: 200kg per Load Cell
Size 85x54x10mm
EMG Sensor
Gain: 1000
Bandwidth: 25-500Hz
CMRR: 100dB
Range: ±1.5mV (with VCC=3V)
Input Impedance: >100GOhm
Cable Length: 100cm±0.5cm (customizable)
OpenSignals Signal Processing Add-Ons

The biosignalsplux Force+EMG kit includes the Force Platform add-on, Electromyography (EMG) Analysis, and the Video Synchronziation add-ons for our OpenSignals (r)evolution software.

Force Platform

The Force Platform add-on for the OpenSignals (r)evolution software is designed to extract the most important force parameters from acquisitions conducted with the biosignalsplux Force Platform including the real-time visualization of the Center of Gravity, applied force and mass on the platform. Additionally, in post-acquisition mode, this add-on computes the maximum occurred force within a defined signal interval, the Force Production Rate (FPR in N/s), and jump analysis-specific parameters such as the jump height (in cm) and the flight time (time spend in the air during a jump).

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Electromyography (EMG) Analysis

This add-on is designed to extract useful statistical temporal and spectral information from electromyography data acquired with the Electromyography (EMG) sensor. Its automatic onset detection algorithm is designed to detect muscle activations in the EMG signal, allowing the user to select and derive activation-specific parameters for further analysis of the EMG signal. The onset detection algorithm can be fine-tuned for application-specific muscle activation detection by defining the frequency ranges of interest using the available low pass, high pass, and band pass filters.

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Video Synchronization

The Video Synchronization add-on for the OpenSignals (r)evolution software is the ideal software extension for the synchronization of video and biosignal acquisitions. Multimodal data acquisitions in a variety of research fields include video recording setups as complementary data to the acquired biosignals.

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