A new optical technique to monitor joint motion using position sensitive detector

Gu In Jung; Byung Kyu Park; Ji Sun Kim; Tae Hee Lee; Ju Hyeon Choi; Han Byeol Oh; A. Hee Kim; Bong Jun Goh; Ji Won Kim; Ki Sung Lee; Jae Hoon Jun

doi:10.3233/THC-150984

A new optical technique to monitor joint motion using position sensitive detector

Gu In Jung, Byung Kyu Park, Ji Sun Kim, Tae Hee Lee, Ju Hyeon Choi, Han Byeol Oh, A. Hee Kim, Bong Jun Goh, Ji Won Kim, Ki Sung Lee, Jae Hoon Jun

Department of Physical Medicine & Rehabilitation

Research output: Contribution to journal › Article

Abstract

BACKGROUND: Evaluation of joint movements is essential to choose an appropriate rehabilitation protocol for a patient. OBJECTIVE: The aim of this study is to suggest an alternative optical technique for measurement of joint angle which is convenient, inexpensive, and can be operated in real time. METHODS: According to the principle of the triangulation method, position sensitive detector (PSD) converts reflected light signals into distance-related voltages. Various parameters were investigated to increase detection range and resolution of joint angle measurements. RESULTS: The accuracy of the suggested optical sensor was verified by comparing with a commercial goniometer and 3D motion capture system. CONCLUSIONS: This method can be applied to monitor recovery progress for the patient in rehabilitation and sport science.

Original language	English
Pages (from-to)	S473-S480
Journal	Technology and Health Care
Volume	23
DOIs	https://doi.org/10.3233/THC-150984
Publication status	Published - 2015 Jan 1

Keywords

Human joint angle
optical goniometer
position sensitive detector
range of motion
rehabilitation

ASJC Scopus subject areas

Biophysics
Bioengineering
Biomaterials
Information Systems
Biomedical Engineering
Health Informatics

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Jung, G. I., Park, B. K., Kim, J. S., Lee, T. H., Choi, J. H., Oh, H. B., Kim, A. H., Goh, B. J., Kim, J. W., Lee, K. S., & Jun, J. H. (2015). A new optical technique to monitor joint motion using position sensitive detector. Technology and Health Care, 23, S473-S480. https://doi.org/10.3233/THC-150984

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abstract = "BACKGROUND: Evaluation of joint movements is essential to choose an appropriate rehabilitation protocol for a patient. OBJECTIVE: The aim of this study is to suggest an alternative optical technique for measurement of joint angle which is convenient, inexpensive, and can be operated in real time. METHODS: According to the principle of the triangulation method, position sensitive detector (PSD) converts reflected light signals into distance-related voltages. Various parameters were investigated to increase detection range and resolution of joint angle measurements. RESULTS: The accuracy of the suggested optical sensor was verified by comparing with a commercial goniometer and 3D motion capture system. CONCLUSIONS: This method can be applied to monitor recovery progress for the patient in rehabilitation and sport science.",

keywords = "Human joint angle, optical goniometer, position sensitive detector, range of motion, rehabilitation",

author = "Jung, {Gu In} and Park, {Byung Kyu} and Kim, {Ji Sun} and Lee, {Tae Hee} and Choi, {Ju Hyeon} and Oh, {Han Byeol} and Kim, {A. Hee} and Goh, {Bong Jun} and Kim, {Ji Won} and Lee, {Ki Sung} and Jun, {Jae Hoon}",

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AU - Jung, Gu In

AU - Park, Byung Kyu

AU - Kim, Ji Sun

AU - Lee, Tae Hee

AU - Choi, Ju Hyeon

AU - Oh, Han Byeol

AU - Kim, A. Hee

AU - Goh, Bong Jun

AU - Kim, Ji Won

AU - Lee, Ki Sung

AU - Jun, Jae Hoon

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AB - BACKGROUND: Evaluation of joint movements is essential to choose an appropriate rehabilitation protocol for a patient. OBJECTIVE: The aim of this study is to suggest an alternative optical technique for measurement of joint angle which is convenient, inexpensive, and can be operated in real time. METHODS: According to the principle of the triangulation method, position sensitive detector (PSD) converts reflected light signals into distance-related voltages. Various parameters were investigated to increase detection range and resolution of joint angle measurements. RESULTS: The accuracy of the suggested optical sensor was verified by comparing with a commercial goniometer and 3D motion capture system. CONCLUSIONS: This method can be applied to monitor recovery progress for the patient in rehabilitation and sport science.

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KW - rehabilitation

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