Highly accurate, small and lightweight 3D human wireless motion tracker. Easy to integrate wireless human motion tracker for real-time applications. Used in a body area network, these portable and unobtrusive wireless trackers are ideal for developing customized wearable solutions. The Awinda radio protocol ensures time-synchronization better than 10 µs between each MTw on a wireless body area network.

Overview

Ergonomics

  • Workplace Ergonomics
  • Virtual Verification

Health & Safety

  • Therapy
  • Prevention
  • Rehabilitation
  • Pedestrian Navigation

Sports

  • Injury prevention
  • Performance science

Research

  • Biomechanics
  • Gait Analysis

Virtual Reality

  • Training & Simulation
  • Head tracking
  • Game

Human Machine Interaction

  • Robot

System Integration

Integration with the MTw is very straightforward with the Xsens MT Software Suite. The MT Software Suite is an easy-to-use API which can be interfaced with via a COM, C and C++ interface with support for Windows and Linux. The components of the MT Software Suite are:

Xsens Device APIXsens APIEasy to use Xsens Device API to communicate with the MTw Awinda interfaces for common programming languages.
Example codeExample code To make starting with the MTw even easier, example code is provided for various platforms, amongst others Matlab and Linux.
MT ManagerAn intuitive GUI for Windows, including configuration and recording tools, graphs and a wireless configuration setup to help understand the Xsens Awinda System.
Magnetic Field MapperMagnetic Field Mapper An algorithm and tool to calibrate the MTw for hard and soft iron effects. The calibration can be done during normal operation; there are no restrictions on the trajectories or rotations.
DocumentationDocumentation Full (HTML)-documentation on the MTw, API, SDK and application notes.
SynchronizationTried and tested synchronization of data acquisition systems with Xsens:

Synchronization with EMG Systems

Synchronization with Optical Systems

Synchronization with Pressure Mats

Synchronization with EEG systems

Specifications

Tracker placementEasy fastening with Velcro straps
Internal sampling rate1000 Hz
Latency30 ms
Buffer time (retransmissions)10 s
Battery life (continuous use)6 Hours
Dimensions Tracker47 x 30 x 13 mm (1.85 x 1.18 x 0.51 in)
Weight16 g (0.56 oz.)
Operating temperature range0°C – 50°C

Wireless update rates

1 MTw120 Hz
5 MTw120 Hz
9 MTw100 Hz
10 MTw80 Hz
20 MTw (maximum)60 Hz

Communication

RangeAwinda stationAwinda dongle
Open spaceUp to 50 m (165 ft.)Up to 20 m (65 ft.)
Office spaceUp to 20 m (65 ft.)Up to 10 m (33 ft.)
Wireless protocolXsens patented Awinda protocol 1
ReceiverAwinda Station / Awinda Dongle

Orientation

Static Accuracy (Roll/Pitch)0.5 deg RMS
Static Accuracy (Heading)1 deg RMS
Dynamic Accuracy (Roll/Pitch)0.75 deg RMS
Dynamic Accuracy (Heading)1.5 deg RMS

Tracker components

Dimensions3 axes3 axes3 axes
Full scale± 2000 deg/s± 160 m/s2± 1.9 Gauss

1 The patented Awinda protocol ensures highly accurate time synchronized data sampling
(within 10 μs) in all connected MTw’s, which is essential for accurate joint angles.

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