The Effects of Movement Speeds and Magnetic Disturbance on Inertial Measurement Unit Accuracy: The Implications of Sensor Fusion Algorithms in Occupational Ergonomics Applications

Details

• Personal Author:
  Chen H
• Description:
  Musculoskeletal disorders of the upper extremity are among the most common and expensive of all occupational injuries and illnesses. Understanding and measuring the risk factors associated with these conditions is important for improving worker health and well-being. The measurement systems available for this purpose, however, are quite limited. Inertial measurement units (IMUs), a relatively new technology available for measuring important aspects of worker motion in the field, offer improved data collection prospects for ergonomists. However, the accuracy of IMUs can vary beyond clinically-acceptable levels. The overall goals of this thesis were to (i) provide knowledge about the capabilities and limitations of IMUs in order to explain the inconsistencies observed in previous studies that have assessed IMU accuracy, and (ii) provide guidance for the ergonomics community to leverage this technology within its current capabilities. The studies in this dissertation systematically examined factors known to adversely affect IMU accuracy. Results suggested that the advertised capabilities of IMUs (full-body motion capture in workplace settings) may not be achievable using current sensor technologies. However, these sensors are still substantially more accurate than the devices commonly used by ergonomists to measure upper extremity postures and movements in field settings. [Description provided by NIOSH]
• Subjects:
  Engineering Mining Occupational Health Safety Software
• Keywords:
  Algorithms Author Keywords: Biomechanics Biomechanical Modeling Biomechanics Ergonomics Inertial Measurement Units Inertial Motion Capture Motion Capture Motion Studies MSD Musculoskeletal Disorders Occupational Ergonomics Posture Sensors Upper Extremities

  More +
• Publisher:
  University of Iowa
• Document Type:
  Text
• Funding:
  Cooperative Agreement ; Grant
• Genre:
  Dissertation
• Place as Subject:
  Iowa ; OSHA Region 7
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  1-109
• NIOSHTIC Number:
  nn:20052574
• Citation:
  Iowa City, IA: University of Iowa, 2017 May; :1-109
• Federal Fiscal Year:
  2017
• NORA Priority Area:
  Agriculture, Forestry and Fishing
• Performing Organization:
  University of Iowa, Iowa City
• Peer Reviewed:
  False
• Start Date:
  20010930
• Source Full Name:
  The effects of movement speeds and magnetic disturbance on inertial measurement unit accuracy: the implications of sensor fusion algorithms in occupational ergonomics applications
• End Date:
  20270929
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:ce4de024f125b294078e4245f914521545cc8da4d081e86c1471f07d52d8f1cce3f44d1059e0fcecffd06b914dbfeb1a4f08486b46703410532685932d408184
• Download URL:
  https://stacks.cdc.gov/view/cdc/212083/cdc_212083_DS1.pdf
• File Type:
  [PDF - 7.10 MB ]