Cited by 647Inertial Sensor and NavigationContext-Aware Activity Recognition SystemsWireless Body Area Networks

Measuring orientation of human body segments using miniature gyroscopes and accelerometers

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Luinge, H. J., Veltink, P. H.·2005·Medical & Biological Engineering & Computing

Abstract

In the medical field, there is a need for small ambulatory sensor systems for measuring the kinematics of body segments. Current methods for ambulatory measurement of body orientation have limited accuracy when the body moves. The aim of the paper was to develop and validate a method for accurate measurement of the orientation of human body segments using an inertial measurement unit (IMU). An IMU containing three single-axis accelerometers and three single-axis micromachined gyroscopes was assembled in a rectangular box, sized 20 x 20 x 30 mm. The presented orientation estimation algorithm continuously corrected orientation estimates obtained by mathematical integration of the 3D angular velocity measured using the gyroscopes. The correction was performed using an inclination estimate continuously obtained using the signal of the 3D accelerometer. This reduces the integration drift that originates from errors in the angular velocity signal. In addition, the gyroscope offset was continuously recalibrated. The method was realised using a Kalman filter that took into account the spectra of the signals involved as well as a fluctuating gyroscope offset. The method was tested for movements of the pelvis, trunk and forearm. Although the problem of integration drift around the global vertical continuously increased in the order of 0.50 degrees s(-1), the inclination estimate was accurate within 3 degrees RMS. It was shown that the gyroscope offset could be estimated continuously during a trial. Using an initial offset error of 1 rad s(-1), after 2 min the off-set error was roughly 5% of the original offset error. Using the Kalman filter described, an accurate and robust system for ambulatory motion recording can be realised.

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  • Accelerometer data is typically considered to be compound of linear acceleration, gravity, and white additive noise.

    “Accelerometer data is typically considered to be compound of three factors: linear acceleration, gravity, and white additive noise [21].”

    From Real-Time Estimation of Pathological Tremor Parameters from Gyroscope Data (2010) · cites this paper as [21]

    Experimental — accuracy not yet measured
  • Data from accelerometers are composed of a combination of linear acceleration, gravity, and additive noise.

    “Data from accelerometers are composed of a combination of linear acceleration, gravity, and additive noise [16].”

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Research works printed but not linked: 3

  1. BROWN, R. G., and HWANG, P. Y. C. (1997): 'Introduction to random signals and applied Kalmanfiltering' (John Wiley and Sons, 1997)
  2. FERRARIS, F., GRIMALDI, U., and PARVIS, M. (1995): 'Procedure for effortless in-field calibration of three-axis rate gyros and acceler- ometers', Sensors Mater., 7, pp. 311 330
  3. L~3TrERS, J., BOMER, J., VERLOOP, T., DROOG, E., OLTHUIS, W., VELTINK, P. H., and BERGVELD, P. (1998): 'In-use calibration pro- cedure for a triaxial accelerometer', Sensors Actuators A, Phys., 66, pp. 205 212 Medical & Biological Engineering & Computing 2005, Vol.

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Authors
Luinge, H. J., & Veltink, P. H.
Affiliations
University of Twente (NL)
Corresponding author
Veltink, P. H.
Venue
Medical & Biological Engineering & Computing
Published
2005-04
Volume
43
Issue
2
Pages
273-282
ISSN
  • 0140-0118 (ISSN-L)
  • 1741-0444
OpenAlex
W2020496717
Cited by
647
References
40
Citations by year
2026: 5 · 2025: 10 · 2024: 13 · 2023: 20 · 2022: 30 · 2021: 21 · 2020: 31 · 2019: 39 · 2018: 34 · 2017: 44 · 2016: 43 · 2015: 46 · 2014: 47 · 2013: 42 · 2012: 38
FWCI
40.88
Type
journal article
Language
en
Open access
Locations
  • Medical & Biological Engineering & Computing (publishedVersion)
  • PubMed (publishedVersion)
  • University of Twente Research Information (submittedVersion)
  • University of Twente Research Information (submittedVersion, other-oa)
Funders
Stichting voor de Technische Wetenschappen
Topics
  • Physical Sciences › Engineering › Aerospace Engineering › Inertial Sensor and Navigation
  • Physical Sciences › Computer Science › Computer Vision and Pattern Recognition › Context-Aware Activity Recognition Systems
  • Physical Sciences › Engineering › Biomedical Engineering › Wireless Body Area Networks
Keywords
inertial measurement unit, Kalman filter, body kinematics, MEMS gyroscope, accelerometer, pelvis, trunk, forearm
MeSH terms
Acceleration, Biomechanical Phenomena, Humans, Models, Biological, Movement, Orientation, Signal Processing, Computer-Assisted, Monitoring, Ambulatory

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