MVN BIOMECH

MVN BIOMECH is an extension of the Xsens MVN system. MVN BIOMECH is closely tailored to the needs of biomechanics researchers. Real time, synchronized video and graphical kinematic data, and export function to save data for use in other applications (including C3D format)

 

MVN BIOMECH

MVN BIOMECH is an ambulant, full-body, 3D human kinematic, camera-less measurement system. It is based on state-of-the-art MEMS inertial sensors, biomechanical models and sensor fusion algorithms. MVN BIOMECH is ambulatory, can be used indoors and outdoors regardless of lighting conditions. The results of MVN BIOMECH trials require minimal post-processing as there is no occlusion or lost markers. Results can easily be exported to other software applications. MVN BIOMECH is used in many applications like biomechanics research, gait analysis and sports science.

MVN BIOMECH Hardware

  • 17 MTx inertial motion trackers
  • Extra backup & prop MTx
  • Wireless transmission (subject to PC)
  • Full-body elasticated Velcro straps
  • Comfortable lycra suit with embedded cabling (optional)

MVN BIOMECH Software

  • Intuitive user interface
  • Quick and easy set up
  • Real-time visualization of:
    • 3D digital character (multi-plane view and user-adjustable)
    • 3D kinematic graphs
    • Video
  • Record 3D motion data with ease
  • Output data of 23 segments and 22 joints
  • Access to direct inertial sensor data
  • Export kinematic data

APPLICATIONS

  • Biomechanics
    • Research
    • Rehabilitation
    • Gait analysis
    • Sports science
    • Sports coaching
    • Ergonomics
  • 3D character animation (game, film, TV, advertising)
  • Training and simulation, live events

FEATURES

Freedom of movement

  • Portable suitcase for easy transportation
  • Wireless subject-PC connection: Up to 150m (492ft) measurement range
  • No occlusion or line-of-sight restrictions
  • Use anywhere: outside, in the office, no lab or simulated environment required
  • Use under any lighting condition

Ease of use

  • Very short setup time (≤15 minutes)
  • Short, pre-defined sensor-to-segment calibration
  • No marker labeling required
  • C3D for analysis applications
  • FBX, BVH for animation applications

Subject comfort

  • Minimal subject time needed
  • Easy calibration
  • Straps can be worn over normal clothing
  • Suit can be worn under normal clothing

Accurate data

  • Highly sensitive MEMS inertial sensors capture subtle movements
  • Sensor fusion algorithms ensures highly accurate output
  • Sensors securely fastened to straps/suit
  • Minimal skin motion artifact
  • No sensitivity to EM-fields
Leaflet
Download the MVN BIOMECH leaflet

Request demonstration


MVN Studio BIOMECH screenshot

Click image for large view


Biomechenics research with Xsens MVN BIOMCH

MVN Motion Capture Suit

Number of trackers

Full body configuration
Lower body configuration
Upper body configuration
Extra prop / backup sensor

17 MTx inertial trackers
7 MTx inertial trackers
11 MTx inertial trackers
1 MTx inertial tracker


Full body motion capture suit

Lightweight, revolutionary stretch fabric with cable guides and 2 fabric sensor pockets and 10 TPE Dryflex sensor holders.

Sizes:
S, M, L (standard), XL, XXL


Accessories (included)

2 gloves with tracker pocket
1 head band with tracker pocket
2 foot mounts


On body cabling

For data communication and power
Only 1 cable needed on each arm/leg, trackers daisy-chained


Power supply

Power/data control unit

2 Xbus Masters (XM)

Power (each XM)

- Battery (incl.)

8 AA NiMH rechargeables
(of which 4 spare)

- Power adapter (incl.)

EU/US/UK Power adapter
110-240VAC/12VDC 1A

- Input voltage range

4 - 14V

Operating time (typical)

 3 hours

Battery charger (incl.)

For 8 AA NiMH batteries


Communication

Interface

Wireless or high-speed RS-232/USB

Wireless range radius (typical)

- Outdoor

150 meters (492 ft.)

- Indoor open space

150 meters (492 ft.)

- Indoor office

50 meters (164 ft.)


Wireless receiver units

All configurations

2 Wireless Receivers (incl.)

RF technology

Bluetooth 2.0
(optimized, class 1)

Interface

USB 1.1 or 2.0
 		  

Physical

Dimensions

MTx inertial tracker

 38 x 53 x 21 mm (1.5” x 2.1” x 0.8”)
Xbus Master

100 x 150 x 40 mm (3.9” x 5.9” x 1.6”)

MVN suitcase

559 x 351 x 229 mm (22” x 13” x 9”)


Suitcase


Suitcase with wheels & extendable handle
Strong, durable & waterproof
Suitable as hand-luggage
Xsens MVN Case

Weight

MTx inertial tracker

30 g (1 oz.)

Xbus Master

200 g (0.4 lbs)

MVN Suit (excl. trackers)

360 g (0.80 lbs)

Total on-body system
(with batteries and cables)

1930 g (4.2 lbs)

Shipping weight (incl. suitcase)

11 kg (24 lbs)


Operation environment

20... +55 deg Celcius, non-wet

(ask for options for water-proof system)


Setup time

Less than 10 minutes

Performance

MTx inertial trackers (to MTx page)

3D orientation accuracy

 <0.5 deg1

Resolution

0.05 deg

Accelerometer range

± 180 m/s2 (18 g)

Gyroscope range

1200 deg/s


MVN human model
  • MVN uses a 23 segment biomechanical model with 22 joints
  • Each joint is specified by statistical parameters for 6DOF joint laxity. An advanced spine and shoulder model is used that computes the kinematics of the spine and shoulder blades

System calibration

Flexible calibration scheme with instant feedback regarding the expected accuracy. Calibration can be done without assistance from a second person.


Basic calibration
  • 10 seconds
  • Basic calibration needs only subject length and foot length

Advanced calibration
  • 10-30 seconds per additional step
  • Advanced subject specific calibration determines tracker alignment and/or subject specific dimensions
  • Calibration procedures for subjects with limited range of motion are possible


1 Static accuracy in homogenous magnetic field

MVN Fusion Engine

Output

Full kinematics of each segment (position, velocity, acceleration, orientation, angular velocity and angular acceleration)

Update rate
  • Internal update rates 120, 100, 60 Hz
  • Export frame rates 120, 100, 60, 50, 30, 25, 24 Hz

3D translation capture
  • Double integration of body segment accelerations allows for jumping/running (permanent floor contact is not needed)
  • ~2% error in traveled distance (without external aiding)
  • Advanced external contact model detects body world contacts to enable crawling, sitting, cartwheels etc.
  • Full control over external contact points
  • Seamless fusion with aiding technologies possible1

Props

Support for one to three props

Magnetic environment
  • Full immunity to temporary magnetic disturbances (~30 seconds)
  • Visual warning of disturbed environment

Local, permanent disturbances

High degree of immunity, performance will depend on motion and environment

Soft tissue artifacts

Minimized to ~2 degrees RMS using redundancy in measurement and biomechanical constraints

Multiple person motion capture

Up to four person motion capture on one PC

1 Some features are only available in SDK, ask for possibilities

MVN Studio

MVN Studio is included with your Xsens MVN order.

The MVN Software Development Kit (SDK) is optional.

MVN (Moven) Studio

MVN Studio Software

MVN Studio is a software application for motion capturing with the MVN suit. At the download section you will find a link for a demo of MVN Studio.

Functionality

  • Easy and quick calibration
  • Real-time preview of motion capture
  • Simultaneous recording/viewing
  • Replaying previously recorded motion data

Supported export formats

  • .BVH (Biovision Hierarchical data)
  • .FBX
  • .MVNX - MVN open XML format
    Output 3D position, 3D orientation, (optionally: 3D acceleration, 3D velocity, 3D angular rate, 3D angular acceleration)
  • .MPG and .AVI movie export

Optional streaming motion data

  • Streaming motion data on local area netwerk (UDP)
  • MotionBuilder compatible client plug-in available
  • Client network monitor support in MVN Studio

MVN StudioData Rate

  • 39 Mb/min @ 60 Hz
  • 66 Mb/min @ 100 Hz
  • 79 Mb/min @ 120 Hz

Recommended computer system

  • Operating system:
    Windows XP (SP2) or Windows Vista
  • Processor:
    Dual core e.g. Core2 or AMD X2 (min. Pentium 4 - 2.6 GHz)
  • Graphic card:
    Any graphic card with DirectX 9 hardware acceleration