Open AccessA Fiber Bragg Grating Pressure Sensor and Its Application to Pipeline Leakage Detection
Author(s) -
Jun Huang,
Zude Zhou,
Dongsheng Zhang,
Qin Wei
Publication year - 2013
Publication title -
advances in mechanical engineering/advances in mechanical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.318
H-Index - 40
eISSN - 1687-8140
pISSN - 1687-8132
DOI - 10.1155/2013/590451
Subject(s) - fiber bragg grating , materials science , pressure sensor , leakage (economics) , pressure measurement , sensitivity (control systems) , acoustics , optics , wavelength , fiber optic sensor , optoelectronics , electronic engineering , fiber , engineering , mechanical engineering , composite material , physics , economics , macroeconomics
The fiber Bragg grating (FBG) technology has been rapidly applied in the sensing technology field. In this paper, an FBG pressure sensor is designed and implemented to detect the leakage of prestressed concrete cylinder pipe (PCCP). The pressure sensor is mainly based on a Bourdon tube with two FBGs bonded on its outside and inside surfaces, respectively. The measurement principle and simulation analysis results are described. The wavelength shift difference of the two FBGs is utilized as a pressure sensing signal, the sensitivity is enhanced, and the temperature cross-sensitivity is compensated. Experimental results indicate that the measurement sensitivity is 1.414 pm/kPa in a range from 0 to 1 MPa, and the correlative coefficient reaches 99.949%. This kind of pressure sensor is effective to quasi-distributed measure and online monitor pressure of gas or liquid in industry and manufacture fields.