Fiber Bragg grating demodulatin system based on ARM and LabVIEW

Ying Zhang; Chunhui Wu; Yinrui Qiu

doi:10.1117/12.864091

11 October 2010 Fiber Bragg grating demodulatin system based on ARM and LabVIEW

Ying Zhang, Chunhui Wu, Yinrui Qiu

Proceedings Volume 7656, 5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment; 765605 (2010) https://doi.org/10.1117/12.864091
Event: 5th International Symposium on Advanced Optical Manufacturing and Testing Technologies, 2010, Dalian, China

Abstract

A novel FBG sensing signal demodulation system based on ARM7 and LabVIEW8.6 is proposed. Matching FBG demodulation method is used to demodulate the luminous intensity signal. The screw attached to stepper motor is controlled by ARM7 microprocessor to impel the cantilever and makes the matching FBG adhered on the cantilever to scan the Bragg wavelengths offset of the sensing FBG. With the synthetics curve of the steps of the motor and Bragg wavelengths of the sensing FBG, we can calculate the tiny offset of wavelength and realize the intention of FBG sensing signal demodulation. After being processed by the weak signal processing circuit and AD convert circuit, the electrical signal converted from the luminous intensity signal enters the MCU. The data coming from the ARM is filtered by the LabVIEW and displayed on the PC. The maximal strain measuring range of 1100με and the measuring accuracy of ±1με are archived in the experiment. The experiment shows that the result of strain tested and the theory one have a good linear relationship.

Citation Download Citation

Ying Zhang, Chunhui Wu, and Yinrui Qiu "Fiber Bragg grating demodulatin system based on ARM and LabVIEW", Proc. SPIE 7656, 5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, 765605 (11 October 2010); https://doi.org/10.1117/12.864091

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