Lab 6 - Introduction to Motion Analysis using xsens

pdf

School

University of Ottawa *

*We aren’t endorsed by this school

Course

2315

Subject

Psychology

Date

Dec 6, 2023

Type

pdf

Pages

Uploaded by jeremiahzephir

APA 2315 Lab 6 - Introduction to Motion Analysis using xsens Jeremiah Zephir 300130890 OBJECTIVES: 1. To become acquainted with motion analysis using xsens; 2. To understand the basic principles of the xsens motion capture system. EQUIPMENT: xsens data acquisition system, computer equipped with xsens MVN software, motion capture suits (3 sizes available), anthropometers, and a scale. INTRODUCTION: This lab serves as an introductory lesson on the xsens motion capture system. As you learned in Lab 5, motion analysis is at the foundation of biomechanics. Advanced motion capture systems have the capacity to collect complex movements in 3D and allow for the extraction of numerous types of biomechanical information, including the kinetic and kinematic parameters of the movement. In Lab 5 you were introduced to the VICON motion capture system. While both VICON and xsens have the ability to capture movements, the way in which they collect the data is quite different. VICON is a camera-based system, whereas xsens is an inertial measurement unit (IMU) system, consisting of motion sensors placed on different segments of the body. In this lab, you will learn how to use the xsens system to capture movement and reproduce a 3D image of a person walking. There are a few online tutorials hyperlinked in this document. Take the time to watch each of these videos METHODOLOGY: *Refer to the “Instructions for xsens” document posted on Brightspace for step -by-step details on how to run the system. You do not need to memorize the steps outlined in the document! 1. Select a volunteer to be your participant. This person will wear the xsens motion trackers and perform a variety of movements in front of the group. 2. Measure and record the participant’s anthropometric data .

APA 2314- Laboratory Techniques in Exercise Physiology and Biomechanics University of Ottawa 2 3. Outfit the participant with the straps and motion trackers . Detailed instructions can be found here . *For this lab you will only be using the lower body sensors. 4. Calibrate the xsens motion capture system. 5. Collect various dynamic trials giving each student the chance to run the computer. Collect at least one normal walking trial. 6. View the kinematic output of your normal walking trial. Of interest in this lab are lower limb joint angles. 7. The final step is to export your data for further analysis.

APA 2314- Laboratory Techniques in Exercise Physiology and Biomechanics University of Ottawa 3 QUESTIONS: *Remember, all answers must be in your own words. 1. How does the xsens system work? (i.e. How does it collect data?) ( 1 mark ) Xsens uses inertial motion capture technology, which involves wearable motion capture sensors placed on the body. These sensors are inertial measurement units which consists of accelerometers, gyroscopes, and magnetometers. Measurements are made via the body's motion by detecting changes in acceleration, angular velocity, and orientation. 2. What kind of data does the xsens system collect? Give an example. ( 1 mark ) The Xsens system collects data based on joint angles, acceleration, velocity, and orientation of body segments. 3. Is it important for the sensors to be placed on the body with precision? Explain your answer. Discuss the benefit(s) of this. ( 3 marks ) Precise placement of sensors is crucial for accurate motion capture. When sensors are placed precisely on specific body locations, it ensures the most accurate representation of movement. This precision enables the system to capture fine details in motion, providing accurate data for analysis and applications. This ensures accuracy and realism in data results, showing enhanced reliability. 4. Discuss the differences in how data is collected using the VICON motion capture system and the xsens motion capture system. ( 4 marks ) VICON Motion Capture System Technology: VICON primarily uses optical motion capture technology. It involves multiple high-speed cameras placed around a capture area. Reflective markers placed on the subject are tracked by these cameras, and the system reconstructs the movement based on marker positions. Data Collection: VICON captures movement by tracking the positions of reflective markers placed on the body. This allows for highly precise, detailed data capture. Setup: VICON requires a controlled environment with specific lighting and a clear line of sight for the cameras to track markers accurately.

Your preview ends here

Eager to read complete document? Join bartleby learn and gain access to the full version

Access to all documents
Unlimited textbook solutions
24/7 expert homework help

APA 2314- Laboratory Techniques in Exercise Physiology and Biomechanics University of Ottawa 4 Xsens Motion Capture System: Technology: Xsens uses inertial motion capture technology with IMU sensors placed on the body. These sensors do not require a direct line of sight and are suited for outdoor or uncontrolled environments. Data Collection: Xsens captures movement using IMUs, providing flexibility in motion capture without the need for a dedicated studio setup. It is suitable for capturing motion in various environments. Portability: Xsens systems offer greater portability and flexibility due to the wearable nature of the sensors. 5. Practice placing “sensors” on yourself according to the image below . Include all 17 sensors. Detailed instructions for “ Sensor placement in Xsens Awinda System ” can be found here . Use stickers, tape, or whatever else you can come up with as sensors. Ensure whatever you use is visible. Include a photo of yourself outfitted with the “sensors”. ( 1 mark )

APA 2314- Laboratory Techniques in Exercise Physiology and Biomechanics University of Ottawa 5

APA 2314- Laboratory Techniques in Exercise Physiology and Biomechanics University of Ottawa 6

Your preview ends here

Eager to read complete document? Join bartleby learn and gain access to the full version

Access to all documents
Unlimited textbook solutions
24/7 expert homework help

APA 2314- Laboratory Techniques in Exercise Physiology and Biomechanics University of Ottawa 7 6. Learn about another application of the xsens motion capture system by watching the videos in the following links: https://www.youtube.com/watch?v=_1OL8MtVOto and https://youtu.be/c1BO3JQqd7o . What did you learn about xsens? ( 1 mark ) One fun thing I learned about the equipment is that one of my favourite movie characters TED was brought to life with the use of the system. Originally I assumed they would treat it like anime or cartoon and simply make a drawing and edit him in afterwards. 7. Find another application of the xsens motion capture system (other than biomechanical research and films). Include a link to what you found. Maybe you can find something your TA, lab coordinato r, and/or professor hasn’t seen before! ( 1 mark ) Another application of the Xsens motion capture system is in Rehabilitation and Physical Therapy. The system can be utilized to monitor and analyze patients' movements during rehabilitation exercises, helping therapists assess progress and make necessary adjustments in real time. It allows for detailed tracking of joint movements and body mechanics, aiding in the recovery process. https://www.movella.com/products/human-performance/kinduct-training-and- rehab?hsCtaTracking=07bc3f28-16d0-4dde-b826-a6cd9d4b5970%7C6a480785-4024-4bd7-b9ab- ef7ec13ff55c 8. Compare and contrast the pros and cons of the xsens and VICON systems. Imagine you are interested in purchasing such a system. When comparing the systems, think about what features would be important to you. Cost? Ease of use? Portability? Versatility? Data processing speed? Accuracy of data? Number of functions? Etc. ( 6 marks ) Xsens: pros Portability: Wearable sensors allow for easy setup and use in various environments. Flexibility: Doesn't require a dedicated studio setup, enabling outdoor or on-the-go capture. Ease of Use: Quick setup and calibration. Cons: Less Precision: May not be as precise as VICON in controlled studio settings. Limited Range: Might have limitations in capturing large or complex movements. VICON: Pros High Precision: Offers extremely accurate data capture in controlled environments. Multi-Functionality: Suitable for various applications and high-end research. Cons: Expensive: Higher initial cost and setup. Setup and Calibration: Requires a dedicated studio setup, time-consuming calibration.

APA 2314- Laboratory Techniques in Exercise Physiology and Biomechanics University of Ottawa 8 Depending on ones needs, factors such as precision, cost, ease of use, portability, versatility, and data processing speed will be important. If you prioritize mobility and flexibility, Xsens might be more suitable. For top precision and multi-functionality in a controlled environment, VICON would be preferable. 9. Design a research project using the xsens motion capture system. Pick something that would be better done using xsens instead of VICON. Explain why you chose xsens. Briefly (4-5 sentences) describe your research question, the conditions you will be comparing, your hypotheses, and your methodology. ( 7 marks ) Research Question: How does outdoor terrain impact the gait patterns of individuals during walking and running? Conditions: Compare gait patterns on different outdoor terrains like concrete pavement, grass, and gravel paths. Hypotheses: The hypothesis is that different terrains will cause variations in gait patterns due to varying surface stiffness and irregularities. It's expected that walking or running on softer surfaces like grass might result in a more pronounced change in gait pattern compared to harder surfaces like concrete. Methodology: 1. Recruit participants and equip them with Xsens motion capture sensors on specific body points. 2. Participants walk/run on designated terrains while their movements are recorded using Xsens. 3. Analyze the data to compare joint angles, step length, and other gait parameters across different terrains. 4. Statistical analysis to determine significant differences in gait patterns. Reasoning for choosing Xsens: Xsens is chosen for its portability and suitability for outdoor use, allowing the capture of movements in varied terrains without the limitation of a studio setup. Its wearability ensures ease of use and flexibility, enabling the study of natural movement patterns in real outdoor conditions making it much more practical.

Related Documents

psy7115week6disc2.docx

Lab 9 - Introduction to sEMG.pdf

Psy7115week6dis2.docx

week6disc2psy7115.docx

Psyc 420 Paper 2.pdf

Lab 4 - projectile motion.pdf

Lab 7 - kinetics .pdf

Lab 5 - Introduction to Motion Analysis using VICON.pdf

psy7115week6disc1.docx

Week 4 - Quiz 1 PSY615 Personality Theories (PYD2323A).pdf

psy7115week6dis1.docx

Week 3 - Quiz 2 PSY615 Personality Theories (PYD2323A).pdf

Recommended textbooks for you

Ciccarelli: Psychology_5 (5th Edition)

Psychology

ISBN:9780134477961

Author:Saundra K. Ciccarelli, J. Noland White

Publisher:PEARSON

Cognitive Psychology

Psychology

ISBN:9781337408271

Author:Goldstein, E. Bruce.

Publisher:Cengage Learning,

Introduction to Psychology: Gateways to Mind and ...

Psychology

ISBN:9781337565691

Author:Dennis Coon, John O. Mitterer, Tanya S. Martini

Publisher:Cengage Learning

Psychology in Your Life (Second Edition)

Psychology

ISBN:9780393265156

Author:Sarah Grison, Michael Gazzaniga

Publisher:W. W. Norton & Company

Cognitive Psychology: Connecting Mind, Research a...

Psychology

ISBN:9781285763880

Author:E. Bruce Goldstein

Publisher:Cengage Learning

Theories of Personality (MindTap Course List)

Psychology

ISBN:9781305652958

Author:Duane P. Schultz, Sydney Ellen Schultz

Publisher:Cengage Learning

SEE MORE TEXTBOOKS

Recommended textbooks for you

Ciccarelli: Psychology_5 (5th Edition)
Psychology
ISBN:9780134477961
Author:Saundra K. Ciccarelli, J. Noland White
Publisher:PEARSON
Cognitive Psychology
Psychology
ISBN:9781337408271
Author:Goldstein, E. Bruce.
Publisher:Cengage Learning,
Introduction to Psychology: Gateways to Mind and ...
Psychology
ISBN:9781337565691
Author:Dennis Coon, John O. Mitterer, Tanya S. Martini
Publisher:Cengage Learning
Psychology in Your Life (Second Edition)
Psychology
ISBN:9780393265156
Author:Sarah Grison, Michael Gazzaniga
Publisher:W. W. Norton & Company
Cognitive Psychology: Connecting Mind, Research a...
Psychology
ISBN:9781285763880
Author:E. Bruce Goldstein
Publisher:Cengage Learning
Theories of Personality (MindTap Course List)
Psychology
ISBN:9781305652958
Author:Duane P. Schultz, Sydney Ellen Schultz
Publisher:Cengage Learning