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Sensors 2013, 13(11), 15274-15289;

A Multifunctional Joint Angle Sensor with Measurement Adaptability

School of Transportation Science and Engineering, Harbin Institute and Technology, Harbin 150090, China
Department of Automatic Test and Control, Harbin Institute and Technology, Harbin 150080, China
Author to whom correspondence should be addressed.
Received: 21 August 2013 / Revised: 2 November 2013 / Accepted: 4 November 2013 / Published: 8 November 2013
(This article belongs to the Special Issue Wearable Gait Sensors)
Full-Text   |   PDF [964 KB, uploaded 21 June 2014]


The paper presents a multifunctional joint sensor with measurement adaptability for biological engineering applications, such as gait analysis, gesture recognition, etc. The adaptability is embodied in both static and dynamic environment measurements, both of body pose and in motion capture. Its multifunctional capabilities lay in its ability of simultaneous measurement of multiple degrees of freedom (MDOF) with a single sensor to reduce system complexity. The basic working mode enables 2DOF spatial angle measurement over big ranges and stands out for its applications on different joints of different individuals without recalibration. The optional advanced working mode enables an additional DOF measurement for various applications. By employing corrugated tube as the main body, the sensor is also characterized as flexible and wearable with less restraints. MDOF variations are converted to linear displacements of the sensing elements. The simple reconstruction algorithm and small outputs volume are capable of providing real-time angles and long-term monitoring. The performance assessment of the built prototype is promising enough to indicate the feasibility of the sensor. View Full-Text
Keywords: joint angle; wearable device; multifunctional sensor; gesture measurement joint angle; wearable device; multifunctional sensor; gesture measurement
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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Quan, W.; Wang, H.; Liu, D. A Multifunctional Joint Angle Sensor with Measurement Adaptability. Sensors 2013, 13, 15274-15289.

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