A non-exoskeleton optoelectric wrist goniometer

Chiuhsiang Lin, Joseph H. Goldberg, Andris Freivalds

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Highly repetitive wrist motion and extreme wrist posture can result in carpal tunnel syndrome. To study the association between wrist motion and posture and carpal tunnel syndrome, a hand/wrist goniometer is indispensable. This paper describes the development of an optoelectric goniometer. The goniometer utilized a fluid-based absolute angle sensor to transduce wrist posture into electrical signals. A geometric relationship and 6 nonlinear equations were used to calculate relative wrist angles. The result was an easy-to-use and non-exoskeleton hand/wrist goniometer which measures radial-ulnar deviation and flexion-extension of the wrist. Validation results showed that the average error of the absolute angle transducer was 4.5% of the full scale output (180°). Correlation between the output from the sensor and the standard motion was 0.977. Repeatability tests showed that the variation was 6.02% of the input value. The resolution of the sensor was 0.036°.

Original languageEnglish (US)
Pages (from-to)233-242
Number of pages10
JournalInternational Journal of Industrial Ergonomics
Volume11
Issue number3
DOIs
StatePublished - Jan 1 1993

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Goniometers
Wrist
Values
Sensors
Tunnels
Posture
Carpal Tunnel Syndrome
Nonlinear equations
Transducers
Hand
Fluids

All Science Journal Classification (ASJC) codes

  • Human Factors and Ergonomics
  • Public Health, Environmental and Occupational Health

Cite this

Lin, Chiuhsiang ; Goldberg, Joseph H. ; Freivalds, Andris. / A non-exoskeleton optoelectric wrist goniometer. In: International Journal of Industrial Ergonomics. 1993 ; Vol. 11, No. 3. pp. 233-242.
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A non-exoskeleton optoelectric wrist goniometer. / Lin, Chiuhsiang; Goldberg, Joseph H.; Freivalds, Andris.

In: International Journal of Industrial Ergonomics, Vol. 11, No. 3, 01.01.1993, p. 233-242.

Research output: Contribution to journalArticle

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