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Getting Started with the Awinda in MVN

This document will give users a basic workflow for getting up and running with your new Awinda system in the MVN Analyze/Animate software. For more specific questions please reach out to us at Support@xsens.com

 

Getting Started

  • Turn on each of the 17 trackers (18 if using a prop in your capture session).
    • Press the button on the tracker until the light starts blinking (about 1-2 seconds)
      • Note: the trackers go to sleep after 30 seconds and the light will turn off. Simply move the tracker and it will wake up

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    • Connect the Awinda station (unit with antenna) to your computer running MVN Analyze, Animate, or Animate Pro via included USB cable

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  • Open MVN software, click File and select Start Motion Capture (or CTRL+N)

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  • The motion capture configuration window will then open
  • Next, select the system being used (Awinda)
    • Note: Leading numbers are the serial number for your Awinda station

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  • Check that all trackers show up on the biomechanical model in the software
    • Trackers that are properly connected show up green

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  • You can check the status of each of the trackers by clicking the wrench and opening the hardware status window
  • Here you can reconnect an individual tracker to the Awinda station by right clicking on the tracker

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Preparing your participant

  • Secure the 17 labeled body trackers to your participant according to the Preparing Hardware MVN Awinda tutorial video: https://tutorial.xsens.com/video/preparing-hardware-mvn-awinda
    • It is important that the trackers are secured to a flat region, ideally sitting directly over the bone, to avoid the tracker being displaced by soft tissue while moving.
    • As opposed to putting the tracker in the shoe as the video instructs, place the tracker on top of the shoe slightly lateral to the top, (between the 4th and 5th metatarsals) and a bit more proximal to the ankle (near the proximal end of the metatarsals)
  • In the motion capture configuration window, enter a name for your participant (i.e. “Subject001”)

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  • Then enter the participants body dimensions
    • Measure height & foot/shoe length (in cm), other measurements can be estimated by the software
    • If you wish to manually enter all the body dimensions, follow our Xsens body measurements tutorial https://tutorial.xsens.com/video/body-measurements
    • Once you’ve entered the body dimensions, you can save your participant’s profile

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  • Before you exit the configuration window, choose a name for each the movement you plan to capture (i.e. Running). This name will be used to create the filename for each take you record and will automatically be appended with “take001”, “take002”, etc

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  • Finally, select the folder you want to save your files in

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  • Click Ok to return back to the live capture space

Calibration

  • Now that your trackers and participant are all set, you need to calibrate
    • In the Hardware Setup window, under the calibration tab select N pose + walk for calibration type (note: when calibration type is selected, it will be highlighted in blue)

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  • During the N Pose + walk calibration, your participant will do the following:
    • Participant will start by holding the N Pose (feet slightly apart, arms at side, head facing forward)
    • When prompted by the software, the participant will walk forward at a comfortable pace making sure the arms are swinging naturally
    • The software will then prompt the participant to turn around walk back to the starting position
    • Finally, the participant will face the direction they originally started in and hold N pose as the calibration finishes.
    • Use the Calibrating Awinda tutorial video as a guide: https://tutorial.xsens.com/video/calibrating-awinda
  • When you are ready to start the calibration, click “Calibrate” and it will turn into a “Start” button. Click the “Start” button to begin calibration and follow the prompts from the software
    • Note: The biomechanical model will be moving during calibration, however, this is not from data being recorded! This playback is an example of how your participant should be moving during calibration

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  • Once the calibration is finished, a buffering progress bar will appear at the top of the screen. When the buffering is completed, a window will pop up summarizing calibration and prompting you to apply. Clicking apply will set the origin, so have your subject stand where they begin each take, then click apply.
    • Note: Once you apply the calibration, it is important that the trackers are not moved or adjusted or it will disrupt the biomechanical model. If a tracker is moved, you will need to recalibrate.
  • After you click apply, have your participant walk around the space and check if the biomechanical model’s movements look accurate and natural.

Record Data

  • Once you are ready to record data, click the red record button along the toolbar to start and stop each take. When you stop a recording, you will be prompted to save the take in the previously selected folder

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  • To play back your trials, click on file then select open and choose the desired file

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  • Use the playback buttons along the tool bar to play your files and view what you have recorded

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Exporting Data

  • When you are ready to export your data, click on file, export and click on export file

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  • Select your export settings and folder for the exported file, then click export when ready

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