Research of three-dimensional force sensor based on multiplexed fiber Bragg grating strain sensors

Hui-Chao Xu; Su Wang; Xin-Gang Miao

doi:10.1117/1.OE.56.4.047103

13 April 2017 Research of three-dimensional force sensor based on multiplexed fiber Bragg grating strain sensors

Hui-Chao Xu, Su Wang, Xin-Gang Miao

Author Affiliations +

Optical Engineering, Vol. 56, Issue 4, 047103 (April 2017). https://doi.org/10.1117/1.OE.56.4.047103

Abstract

Most safety problems of architectural structures are caused by structural deformation, and the structures usually deform in more than one direction. So it is important and necessary to collect the safety monitoring data from all directions. Conventional fiber Bragg grating (FBG) sensors cannot fully meet the requirements of a modern safety monitoring system in practical application. Therefore, the research of a three-dimensional (3-D) force sensor that can expand the application range of fiber optic sensing technology is necessary and significant. A 3-D force sensor based on multiplexed FBG strain sensors is proposed, which can be used to measure 3-D force on a structure under test, force distribution, and the trend of relative microdeformation. The sensor that has an integral structure with a design has been described in detail, and its sensing principle has been investigated. The results of calibration experiments show that it can accurately and effectively realize the 3-D force measurement with good linearity, repeatability, and consistency. Experimental and analytical results both demonstrate its feasibility. It can work in harsh environments due to its good stability and anti-interference ability. The sensor proposed in this paper has great engineering application value and application prospects in the field of structure health monitoring.

Citation Download Citation

Hui-Chao Xu, Su Wang, and Xin-Gang Miao "Research of three-dimensional force sensor based on multiplexed fiber Bragg grating strain sensors," Optical Engineering 56(4), 047103 (13 April 2017). https://doi.org/10.1117/1.OE.56.4.047103

Received: 15 November 2016; Accepted: 29 March 2017; Published: 13 April 2017

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available