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Fiber Bragg Grating Goniometer for Joint Angle Measurement

Umesh, Sharath and Padma, Srivani and Srinivas, Talabattula and Asokan, Sundarrajan (2018) Fiber Bragg Grating Goniometer for Joint Angle Measurement. In: IEEE SENSORS JOURNAL, 18 (1). pp. 216-222.

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Official URL: http://dx.doi.org/10.1109/JSEN.2017.2770176


Goniometers are extensively used in the medical field, in order to assess the range of angular motion of a joint, especially for therapeutic assessment during physiotherapy. This paper reports a novel device for the dynamic measurement of angular motion of joints using a fiber Bragg grating (FBG) senor. The fiber Bragg grating goniometer (FBGG) is proposed, essentially converts the rotational motion of a joint into strain variation on a cantilever, which is acquired by the FBG sensor bonded over it. The FBGG developed has the capability of measuring joint angles in the range of 0 degrees-200 degrees with a resolution of 0.06 degrees. The FBGG developed has been put to use in the measurement of angular motion of elbow joint along with ankle joint. The angular measurements obtained from the FBGG are validated against the angular measurements from the Polhemus liberty sensor. It is observed that the angular motions acquired from both the methodologies are in good agreement with each other, which proves the usefulness of the FBGG developed. Also, with the inherent advantages of the FBG sensor, the FBGG developed provides an efficient means of evaluation of angular motion of joint, which may be utilized as a platform sensor methodology for angular measurement of various other joints in the human body.

Item Type: Journal Article
Publisher: 10.1109/JSEN.2017.2770176
Additional Information: Copy right for this article belongs to the IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
Department/Centre: Division of Physical & Mathematical Sciences > Instrumentation Appiled Physics
Date Deposited: 12 Jan 2018 09:21
Last Modified: 12 Jan 2018 09:21
URI: http://eprints.iisc.ac.in/id/eprint/58670

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