Title :
Software Design of FBG Temperature Demodulation System Based on Wavelet Denoising
Author :
Hu Wen-xia ; Wan Sheng-peng ; Zhang Hui-lian
Author_Institution :
NIAT, Nanchang Hangkong Univ., Nanchang, China
Abstract :
A principle of Fiber Bragg Grating wavelength demodulation system based on DSP was elaborated.Using specturm rebuilding scheme based on wavelet denoising to improve wavelength detection accuracy, while the dealing process of specturm rebuilding is simulated by MATLAB and the result is discussed. The design of VC++ applications can realize demodulation of the wavelength information collected by DSP in using of a key. Finally, a method of mixed programming using VC++ and MATLAB was presented to complete Specturm rebuilding. The experiment indicates that the software functions are effective,and the precision of the measurement can reach to 0.1°C.
Keywords :
Bragg gratings; C++ language; fibre optic sensors; mathematics computing; optical information processing; optical modulation; FBG temperature demodulation; MATLAB; VC++ applications; digital signal processing; fiber Bragg grating; software design; specturm rebuilding scheme; wavelength demodulation system; wavelength detection; wavelet denoising; Demodulation; Fiber gratings; MATLAB; Noise reduction; Temperature sensors;
Conference_Titel :
Photonics and Optoelectronics (SOPO), 2011 Symposium on
Conference_Location :
Wuhan
Print_ISBN :
978-1-4244-6555-2
DOI :
10.1109/SOPO.2011.5780384
