MVN BIOMECH - Biomechanical Motion Sensor

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 System Features

Unieke Features van het MVN Systeem:

Full magnetic immunity

Immuun to magnetic interference in live settings from things like metal/iron/equipment

Allows you to use this system in environments without any restrictions like: buildings, labs, treatment rooms and outside

HD Reprocessing: offline engine which improves the quality of data after a recording

Skin artefacts correction

Foot slide correction

Multiple contact point correction

Improving consistency of data

Improving joint angle and 3D Kinematic accuracy of data

Improving the accuracy of the estimation of the 3D Global position

Internal sampling rate

1000 Hz sampling rate

Strap down integration for optimal wireless data transfer

6 Degrees of Freedom (DOF) o 3D joint angles

Anatomically correct 3D joint laxity

Multiple contact point detection: which enables tracking of movements like:

Stair climbing, jumps, breakdancing, walking on hands etc.

MVN Remote App

Sync with camera from smartphone

Control basic features of MVN software with phone: start/stop recording, avatar to origin and time markers placement

Global 3D position error in live setting*

o approximately +/- 1% of covered distance

o *By using HTC Vive this can be optimised

Multi level tracking

o Multiple levels are available during and after recording: single/multi/no/vehicle/soft floor

o The system is able to measure jumping and running: the 3D avatar will get off the floor and height is estimated right. Multilevel tracking live; The system is able to measure height changes in the global 3D. (e.g. able to measure stairclimbing)

Wireless

With the Awinda station a range of +/- 50m

Within tracker communication through patented radiofrequency protocol.

Suited for every person

Strap based placement of sensors

T-shirt in sizes S t/m XXXXL

MVN Awinda

MVN Awinda is an ambulatory 3D human kinematic measurement system. MVN Awinda uses small on-body wireless motion trackers which are attached on a special designed strap set for the limbs, feet, hands, head and strap set. For tracking the sternum and should, Xsens designed a special shirt (available in 3 sizes). The MVN Awinda system is based on Xsens proven and patented technology. Using state of the art inertial motion trackers, sensor fusion algorithms, specialized wireless protocols and validated biomechanical models, highly accurate kinematic data is generated.

MVN Awinda can be used indoors and outdoors regardless of terrain or lighting conditions. The results of MVN Awinda trials require no post-processing as there is no occlusion or lost markers.

Exported MVN Awinda data can be easily used in other software applications.

Features

17 wireless on-body motion trackers

Output update rate: 60Hz

Internal sampling rate: 1000Hz

Inter-tracker wireless synchronization: <10 microseconds.

Battery life: 6.5 hours

Retransmission of lost data packages (1 minute buffer when out of range.)

Specifications of motion trackers:

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

Accelerometer range: +/- 160 m/s2

Gyroscope range: +/- 2000 deg/s

Full-body set of straps, including M/L/XL size shirts, gloves and footpads

Awinda receiver, sync and charging station + 2 additional charging stations. (range up to 50 meters outdoors)

Wireless connection is based the patented Awinda protocol

Possibility to choose between 15 different radio channels for improving the wireless stability of the system.

Possibility to use Awinda Dongle instead of Awinda receiver (range up to 20 meters outdoors)

Synchronization with third party devices is possible through 2 input - 2 output BNC ports on the Awinda station. Sync with other data acquisition systems through TTL pulses 0-3.3V). System can act as master or slave.

Possibility to add up to 4 prop motion trackers.

Can be added to the biomechanical model of MVN software to create extra joint angles and segment orientations

MVN Link

MVN Link is an ambulatory 3D human kinematic measurement system. The MVN Link system contains two types of motion trackers; the single MTx used as end trackers and the string of three MTx-STR The motion trackers, MTx, and MTx-STR are the miniature inertial measurement units containing 3D linear accelerometers, 3D rate gyroscopes, 3D magnetometers, and a barometer, which measures atmospheric pressure. These trackers are placed at strategic locations on the body (fixed by the suit), to measure the motions of each body segment.

The MTx trackers are positioned on the pelvis, sternum, hands, and head. The MTx-STR’s are used to chain the legs (upper leg, lower leg, and feet), as well as for the upper body (shoulders, upper arms, and for-arms). The MVN Link system is based on Xsens proven and patented technology. Using state of the art inertial motion trackers, sensor fusion algorithms, specialized wireless protocols and validated biomechanical models, highly accurate kinematic data is generated.

MVN Link can be used indoors and outdoors regardless of terrain or lighting conditions. The results of MVN Link trials require no post-processing as there is no occlusion or lost markers.

Exported MVN Link data can be easily used in other software applications.

Features

17 wireless on-body motion trackers

Output update rate: 240Hz

Internal sampling rate: 1000Hz

Inter-tracker wireless synchronization: <10 microseconds.

Battery life: 9.5 hours

(remote) On-Body recording

Specifications of motion trackers:

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

Accelerometer range: +/- 160 m/s2

Gyroscope range: +/- 2000 deg/s

Lycra suits

Light weight revolutionary stretch fabric with exterior zippered channels for trackers and wires

Purchase separately (sizes: S / M / L / XL / XXL)

Wireless receiver

WiFi 2.4 GHz / 5.0 GHz

Ethernet interface

Wireless range 50/150 m (indoor/outdoor)

Synchronization with third party devices is possible through 2 input - 2 output BNC ports on the Awinda station. Sync with other data acquisition systems through TTL pulses 0-3.3V). System can act as master or slave.

Possibility to add up to 4 prop motion trackers.

Can be added to the biomechanical model of MVN software to create extra joint angles and segment orientations

MVN Analyze Pro

Software allows you record movements of up to 4 systems synchronized and simultaneously in 1 software instance.

The software visualizes anatomical model (in accordance with ISB) included with 23 body-segments and 22 joints.

The data can be exported in different file formats:

Open XML format

C3D

FBX

BVH

A special protocol for streaming the 3D motion data onto the network of up to 4 suits is included. The protocol can be based on both UDP and TCP communication protocol.

Streaming plug-in for Unity 3D

Streaming plug-in for Maya

Streaming plug-in for MotionBuilder

Time code sync available

Export file as movie possible

Streaming plug-in for Siemens Jack

Open Exported Data in ViveLab Ergo Vivehuman

The software visualizes and outputs 3D kinematics of 23 segments:

3D global position

3D velocity

3D acceleration

3D angles

3D rate of turn

3D rotational acceleration

The software visualizes and outputs the joint angles of 22 joints

The software visualizes and outputs the sensor data:

3D Magnetic Field

Free acceleration

3D Orientation

The software visualizes and outputs the 3D position of the Centre of Mass of the subject

The data can be visualized in graphs by dragging and dropping:

Time based plots

Phase plots/Coordination plots

The data can be exported in different file formats:

Extended XML format (.MVNX)

Extended C3D

Possibility to export contact points

In real time, temporal markets can be added and exported.

The joint angle between the scapula and humerus are provided in 2 different Euler sequences to avoid the mathematical limitation of Gimbal lock

Patents

US 8165844 B2 (Motion tracking system)

WO 2011015939 A3 (Inertial sensor kinematic coupling)

US 20120223846 A1 (Compression of imu data for transmission of ap)

US 20080262772 A1 (Sytem and a Method for Motion Tracking Using a Calibration Unit)

US 20110109438 A1 (Method and A System for Enabling A Wireless Communication Between A Master Unit and A Sensor Unit)

Xsens Analyze Hardware Options

MVN Awinda Starter

Accurate full-body motion capture with 17 sensors

Fully wireless sensors with straps

Wireless range up to 25 meters

Easy charging with USB

Image Credit:Movella Inc.

MVN Awinda

Accurate full-body motion capture with 17 sensors, plus 1 additional prop sensor

Fully wireless sensors with straps

Wireless range up to 50 meters

Easy charging with charging station

Image Credit:Movella Inc.

MVN Link

Full-body motion capture for high dynamic motions

High update rate for extra accuracy

Long battery life for 10 hour-long recordings

Supports GNSS and (Remote) On-Body Recording

Image Credit:Movella Inc.

Xsens Gloves by Manus

Accurate finger tracking

Natively integrated into MVN Animate software

Body and finger tracking data combined in one file

Image Credit:Movella Inc.

Table 1. Source:Movella Inc.

	MVN Awinda Starter	MVN Awinda	MVN Link
Max update rate	60 Hz	60 Hz	240 Hz
Wireless range	25 m	50 m	150 m
Battery life	6 h	6 h	10 h
Wireless communication	Radio protocol(Awinda protocol)	Radio protocol(Awinda protocol)	Wi-Fi
Wireless datalink	Dongle antenna(1 per person)	Awinda station(1 per person)	Access point(multiple persons)
Latency	30 ms	30 ms	20 ms
On-body buffering	30 sec	30 sec	10 min
Sensors	17 wireless sensors	17 wireless sensors(plus 1 prop sensor)	17 wired sensors(plus 1 prop sensor)
Clothing	Full body strap set (this includes 3 t-shirts (sizes S, L, XXL) and a strap set)	Full body strap set (this includes 3 t-shirts (sizes S, L, XXL) and a strap set)	Full body lycra suits (one suit is included, choose your size when ordering)
Charging	USB cables for Awinda sensors, plus a 6-port USB charger	Charging station for Awinda sensors	Charging station for battery pack
Hardware synchronisation	Optional, with additional Awinda station	Included, via BNC connectors	Optional, with additional Awinda station
Casing	Case	Sturdy backpack	Rugged pelican case
Finger tracking	Full compatibility with Xsens Gloves by Manus (Strechsense compatible)	Full compatibility with Xsens Gloves by Manus (Strechsense compatible)	Full compatibility with Xsens Gloves by Manus (Strechsense compatible)
GNSS (GPS)	✖	✖	✔
On-body Recording (OBR)	✖	✖	✔
Remote On-Body Recording (rOBR)	✖	✖	✔

Xsens Analyze Software Options

Table 2. Source:Movella Inc.

	MVN Record	MVN Analyze Plus	MVN Analyze Pro
Record MVN files	✔	✔	✔
Replay recorded files	✔	✔	✔
MVN HD Reprocessing Engine data quality	Enabled through MotionCloud subscription	Enabled through MotionCloud subscription	✔
MVN Live Engine data quality	✔	✔	✔
Full magnetic immunity	✔	✔	✔
Number of subjects supported	1 Subject/Person	Up to 2 Subjects/Persons	Multiple (max. 4) (unlimited with on-body recording)
Upload files to Xsens MotionCloud	✔	✔	✔
Calculation of Joint angles & Centre of Mass	✖	✖	✔
Exporting	Enabled through MotionCloud subscriptionFormats: MVNX*, FBX, BVH	Enabled through MotionCloud subscriptionFormats: MVNX*, FBX, BVH	Available in softwareFormats: MVNX, FBX, BVH, C3D, XLSX, MP4 (movie)
Finger tracking	Manus and Xsens Gloves by Manus	✔	✔
Live streaming:- Quaternian & Euler- Position & Orientation- Virtual optical marker set	✖	MATLAB, Siemens PLM, Unity, Unreal	MATLAB, Siemens PLM, Unity, Unreal
Extended live streaming:- Joint angles- Acceleration	✖	✖	✔
Stream recorded files	✖	✔	✔
Plug-ins and 3rd party compatibility	✖	MATLAB & Python example code, Anybody, DELMIA, SIEMENS PLM, B.O.B. Biomechanics, OpenSim	MATLAB & Python example code, Anybody, DELMIA, SIEMENS PLM, B.O.B. Biomechanics, OpenSim
Remote control	✖	✔	✔
Reference camera	✖	Webcam & MVN Remote App	Webcam & MVN Remote App
Soft Access Point	✖	Only with MVN Link hardware	✔
Live graphs	✖	✖	✔
EMG integration	✖	✖	✔
3D Positional Aiding with HTC Vive	✖	✖	✔
3D Positional Aiding with GNSS (GPS)	✖	✖	✔
Network sync	✖	✖	✔
Time code	✖	✖	✔
On-body Recording (OBR)	✖	✖	✔
Remote On-body Recording	✖	✖	Only with MVN Link hardware
Suit configuration: full body, lower body, upper body lower body plus sternum	✔	✔	✔
Scenarios	• Single level• Multi level• No level	• Single level• Multi level• No level	✔

*position/orientation