Abstract
A distributed fiber optical interferometric sensing system was built to monitor and detect urban high-density polyethylene gas pipe leakage. To eliminate the phase drift, the digital phase generated carrier scheme was designed to demodulate the phase difference of interferometers induced by high-density polyethylene gas pipe leakage. Then the empirical mode decomposition and approximate entropy were combined to process fiber optic interferometric signals. Finally, leakage points were located by the null-frequency spectrum after empirical mode decomposition filter denoising. The lab-scale test validated the distributed fiber optical interferometric sensing system leakage location performance and demonstrated a reduced leakage accident missed alarm rate.
© 2021 Optica Publishing Group
PDF Article
More Like This
Fiber-optic photoacoustic sensor for remote monitoring of gas micro-leakage
Ke Chen, Min Guo, Shuai Liu, Bo Zhang, Hong Deng, Yonghao Zheng, Yewei Chen, Chen Luo, Li Tao, Mingqi Lou, and Qingxu Yu
Opt. Express 27(4) 4648-4659 (2019)
Cited By
You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.
Contact your librarian or system administrator
or
Login to access Optica Member Subscription