Research Papers: Sensing

Quantitative method for gait pattern detection based on fiber Bragg grating sensors

[+] Author Affiliations
Lei Ding, Xinglin Tong

Wuhan University of Technology, National Engineering Laboratory for Fiber Optic Sensing Technology, Hongshan District, Wuhan, China

Lie Yu

Wuhan Textile University, School of Electronic and Electrical Engineering, Hongshan District, Wuhan, China

J. Biomed. Opt. 22(3), 037005 (Mar 29, 2017). doi:10.1117/1.JBO.22.3.037005
History: Received December 22, 2016; Accepted March 14, 2017
Text Size: A A A

Abstract.  This paper presents a method that uses fiber Bragg grating (FBG) sensors to distinguish the temporal gait patterns in gait cycles. Unlike most conventional methods that focus on electronic sensors to collect those physical quantities (i.e., strains, forces, pressure, displacements, velocity, and accelerations), the proposed method utilizes the backreflected peak wavelength from FBG sensors to describe the motion characteristics in human walking. Specifically, the FBG sensors are sensitive to external strain with the result that their backreflected peak wavelength will be shifted according to the extent of the influence of external strain. Therefore, when subjects walk in different gait patterns, the strains on FBG sensors will be different such that the magnitude of the backreflected peak wavelength varies. To test the reliability of the FBG sensor platform for gait pattern detection, the gold standard method using force-sensitive resistors (FSRs) for defining gait patterns is introduced as a reference platform. The reliability of the FBG sensor platform is determined by comparing the detection results between the FBG sensors and FSRs platforms. The experimental results show that the FBG sensor platform is reliable in gait pattern detection and gains high reliability when compared with the reference platform.

Figures in this Article
© 2017 Society of Photo-Optical Instrumentation Engineers

Citation

Lei Ding ; Xinglin Tong and Lie Yu
"Quantitative method for gait pattern detection based on fiber Bragg grating sensors", J. Biomed. Opt. 22(3), 037005 (Mar 29, 2017). ; http://dx.doi.org/10.1117/1.JBO.22.3.037005


Access This Article
Sign in or Create a personal account to Buy this article ($20 for members, $25 for non-members).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging & repositioning the boxes below.

Related Book Chapters

Topic Collections

Advertisement
  • Don't have an account?
  • Subscribe to the SPIE Digital Library
  • Create a FREE account to sign up for Digital Library content alerts and gain access to institutional subscriptions remotely.
Access This Article
Sign in or Create a personal account to Buy this article ($20 for members, $25 for non-members).
Access This Proceeding
Sign in or Create a personal account to Buy this article ($15 for members, $18 for non-members).
Access This Chapter

Access to SPIE eBooks is limited to subscribing institutions and is not available as part of a personal subscription. Print or electronic versions of individual SPIE books may be purchased via SPIE.org.