Methods for validating the performance of wearable motion-sensing devices under controlled conditions

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

This paper presents validation methods for assessing the accuracy and precision of motion-sensing device (i.e. accelerometer) measurements. The main goals of this paper were to assess the accuracy and precision of these measurements against a gold standard, to determine if differences in manufacturing and assembly significantly affected device performance and to determine if measurement differences due to manufacturing and assembly could be corrected by applying certain post-processing techniques to the measurement data during analysis. In this paper, the validation of a posture and activity detector (PAD), a device containing a tri-axial accelerometer, is described. Validation of the PAD devices required the design of two test fixtures: a test fixture to position the device in a known orientation, and a test fixture to rotate the device at known velocities and accelerations. Device measurements were compared to these known orientations and accelerations. Several post-processing techniques were utilized in an attempt to reduce variability in the measurement error among the devices. In conclusion, some of the measurement errors due to the inevitable differences in manufacturing and assembly were significantly improved (p < 0.01) by these post-processing techniques.

Original languageEnglish (US)
Article number045802
JournalMeasurement Science and Technology
Volume20
Issue number4
DOIs
StatePublished - 2009

Fingerprint

Sensing
Motion
fixtures
Measurement errors
Accelerometers
Post-processing
posture
Processing
manufacturing
assembly
Manufacturing
Accelerometer
Detectors
accelerometers
Measurement Error
Detector
detectors
Gold
Data analysis

Keywords

  • Acceleration
  • Accelerometer
  • Motion
  • Performance
  • Validation

ASJC Scopus subject areas

  • Applied Mathematics
  • Instrumentation

Cite this

@article{1a91684dcbfb4f968d8993548b2a036d,
title = "Methods for validating the performance of wearable motion-sensing devices under controlled conditions",
abstract = "This paper presents validation methods for assessing the accuracy and precision of motion-sensing device (i.e. accelerometer) measurements. The main goals of this paper were to assess the accuracy and precision of these measurements against a gold standard, to determine if differences in manufacturing and assembly significantly affected device performance and to determine if measurement differences due to manufacturing and assembly could be corrected by applying certain post-processing techniques to the measurement data during analysis. In this paper, the validation of a posture and activity detector (PAD), a device containing a tri-axial accelerometer, is described. Validation of the PAD devices required the design of two test fixtures: a test fixture to position the device in a known orientation, and a test fixture to rotate the device at known velocities and accelerations. Device measurements were compared to these known orientations and accelerations. Several post-processing techniques were utilized in an attempt to reduce variability in the measurement error among the devices. In conclusion, some of the measurement errors due to the inevitable differences in manufacturing and assembly were significantly improved (p < 0.01) by these post-processing techniques.",
keywords = "Acceleration, Accelerometer, Motion, Performance, Validation",
author = "Bliley, {Kara E.} and Kaufman, {Kenton R} and Gilbert, {Barry Kent}",
year = "2009",
doi = "10.1088/0957-0233/20/4/045802",
language = "English (US)",
volume = "20",
journal = "Measurement Science and Technology",
issn = "0957-0233",
publisher = "IOP Publishing Ltd.",
number = "4",

}

TY - JOUR

T1 - Methods for validating the performance of wearable motion-sensing devices under controlled conditions

AU - Bliley, Kara E.

AU - Kaufman, Kenton R

AU - Gilbert, Barry Kent

PY - 2009

Y1 - 2009

N2 - This paper presents validation methods for assessing the accuracy and precision of motion-sensing device (i.e. accelerometer) measurements. The main goals of this paper were to assess the accuracy and precision of these measurements against a gold standard, to determine if differences in manufacturing and assembly significantly affected device performance and to determine if measurement differences due to manufacturing and assembly could be corrected by applying certain post-processing techniques to the measurement data during analysis. In this paper, the validation of a posture and activity detector (PAD), a device containing a tri-axial accelerometer, is described. Validation of the PAD devices required the design of two test fixtures: a test fixture to position the device in a known orientation, and a test fixture to rotate the device at known velocities and accelerations. Device measurements were compared to these known orientations and accelerations. Several post-processing techniques were utilized in an attempt to reduce variability in the measurement error among the devices. In conclusion, some of the measurement errors due to the inevitable differences in manufacturing and assembly were significantly improved (p < 0.01) by these post-processing techniques.

AB - This paper presents validation methods for assessing the accuracy and precision of motion-sensing device (i.e. accelerometer) measurements. The main goals of this paper were to assess the accuracy and precision of these measurements against a gold standard, to determine if differences in manufacturing and assembly significantly affected device performance and to determine if measurement differences due to manufacturing and assembly could be corrected by applying certain post-processing techniques to the measurement data during analysis. In this paper, the validation of a posture and activity detector (PAD), a device containing a tri-axial accelerometer, is described. Validation of the PAD devices required the design of two test fixtures: a test fixture to position the device in a known orientation, and a test fixture to rotate the device at known velocities and accelerations. Device measurements were compared to these known orientations and accelerations. Several post-processing techniques were utilized in an attempt to reduce variability in the measurement error among the devices. In conclusion, some of the measurement errors due to the inevitable differences in manufacturing and assembly were significantly improved (p < 0.01) by these post-processing techniques.

KW - Acceleration

KW - Accelerometer

KW - Motion

KW - Performance

KW - Validation

UR - http://www.scopus.com/inward/record.url?scp=63849248477&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=63849248477&partnerID=8YFLogxK

U2 - 10.1088/0957-0233/20/4/045802

DO - 10.1088/0957-0233/20/4/045802

M3 - Article

AN - SCOPUS:63849248477

VL - 20

JO - Measurement Science and Technology

JF - Measurement Science and Technology

SN - 0957-0233

IS - 4

M1 - 045802

ER -