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Related Experiment Videos

An algorithm for estimating acceleration magnitude and impact location using multiple nonorthogonal single-axis

Joseph J Crisco1, Jeffrey J Chu, Richard M Greenwald

  • 1Department of Orthopaedics, Brown Medical School/Rhode Island Hospital, Providence, RI, USA. joseph_crisco@brown.edu

Journal of Biomechanical Engineering
|March 31, 2005
PubMed
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Researchers developed a new method to measure head acceleration in contact sports. This system uses fewer accelerometers, reducing costs and improving helmet compatibility for concussion research.

Area of Science:

  • Biomechanics
  • Sports Medicine
  • Engineering

Background:

  • Concussions are a significant concern in contact sports, with head accelerations being the primary cause.
  • Current methods for studying concussion etiology face challenges due to the lack of valid animal or computer models and difficulties in on-field data collection.
  • Low concussion incidence necessitates large population sampling for meaningful research.

Purpose of the Study:

  • To introduce a novel algorithm for calculating linear head acceleration suitable for head-mounted systems in contact sports.
  • To evaluate the accuracy of this algorithm in measuring acceleration magnitude and impact location.
  • To demonstrate a cost-effective and helmet-compatible system for on-field concussion research.

Main Methods:

Related Experiment Videos

  • Development of a novel algorithm for linear acceleration calculation using single-axis accelerometers.
  • Nonorthogonal arrangement of accelerometers to simplify head-mounted system design.
  • Validation through computer simulations and experimental tests with various accelerometer configurations on a hemispherical headform.

    • Main Results:

    • The proposed system achieved approximately 10% error in linear acceleration magnitude measurement.
    • Impact location was determined with an error of approximately 10 degrees.
    • The system demonstrated feasibility using as few as six single-axis accelerometers.

    Conclusions:

    • A novel, cost-effective head-mounted system for measuring linear head acceleration in contact sports has been developed.
    • The system provides accurate measurements of acceleration magnitude and impact location, aiding concussion research.
    • This approach simplifies design criteria, making it compatible with helmets and suitable for on-field application.