Zobrazeno 1 - 10
of 1 885
pro vyhledávání: '"optical fiber sensing"'
Autor:
SHAO Bocheng, HUANG Yonglin
Publikováno v:
Guangtongxin yanjiu, Pp 23001101-23001105 (2024)
【Objective】In order to solve the problem of cross sensitivity of temperature and strain in Fiber Bragg Grating (FBG) sensing, the response characteristics of temperature and strain in each mode of Few Mode Fiber (FMF)-FBG were studied in this pap
Externí odkaz:
https://doaj.org/article/c0699b40874a43159e3760868bb13fe1
Publikováno v:
Photonic Sensors, Vol 14, Iss 3, Pp 1-13 (2024)
Abstract In this paper, a theoretical analysis of how the excitation conditions affect the sapphire fiber Fabry-Perot interferometer (SFPI) visibility was performed. The conditions were considered, in which an SFPI was excited by a single-mode fiber
Externí odkaz:
https://doaj.org/article/1b296947237848db8769e2fed1067380
Publikováno v:
Meitan xuebao, Vol 49, Iss 3, Pp 1345-1357 (2024)
Distributed optical fiber sensing is an important tool for understanding the dynamic evolution of mining rock movement, and the accuracy of monitoring data mainly depends on the fiber-rock coupling relationship. In this study, the 22207 working face
Externí odkaz:
https://doaj.org/article/6c01cafc15cf4689b6168f3d7cca275e
Publikováno v:
IEEE Photonics Journal, Vol 16, Iss 4, Pp 1-8 (2024)
The sensitivity and noise of an all-fiber optic current transformer (AFOCT) scheme named resonant AFOCT are analyzed, which senses the current information by measuring the frequency difference between clockwise and counterclockwise resonances inside
Externí odkaz:
https://doaj.org/article/93cb6e3feca04c68aaffa3368ab4b0e5
Autor:
Xin Ma
Publikováno v:
IEEE Photonics Journal, Vol 16, Iss 1, Pp 1-7 (2024)
In some special working environments, such as high temperatures, strong electromagnetic fields, dark and narrow spaces, existing technologies such as laser doppler velocimetry (LDV) and high-speed photography velocimetry (HSP) cannot effectively meas
Externí odkaz:
https://doaj.org/article/cb0223937f944620ac8306f8d9412df9
Publikováno v:
Sensors, Vol 24, Iss 13, p 4340 (2024)
To improve the signal-to-noise ratio (SNR) of vibration signals in a phase-sensitive optical time-domain reflectometer (Φ-OTDR) system, a principal component analysis variable step-size normalized least mean square (PCA-VSS-NLMS) denoising method wa
Externí odkaz:
https://doaj.org/article/a343d3211c5f4a1cb537ef07e2f06b0b
Autor:
Yi Zhang, Yanpeng Li, Zezhou Guo, Jianbo Li, Xiaoyu Ge, Qizhen Sun, Zhijun Yan, Zhen Li, Yunhui Huang
Publikováno v:
eScience, Vol 4, Iss 1, Pp 100174- (2024)
With the proposal of a “smart battery,” real-time sensing by rechargeable batteries has become progressively more important in both fundamental research and practical applications. However, many traditional sensing technologies suffer from low se
Externí odkaz:
https://doaj.org/article/4441e8f614154f3a87807e7194b21a29
Publikováno v:
Archives of Civil Engineering, Vol vol. 69, Iss No 1, Pp 437-451 (2023)
In this paper, based on the feasible method and sensors for the full-scale prestressed monitor, the novel optical fiber sensors and the traditional monitoring sensors will be set up into two prestressed concrete beams with the same geometrical dimens
Externí odkaz:
https://doaj.org/article/116f9423c011415d9f65f3c3c1136f57
Publikováno v:
Energy Reports, Vol 9, Iss , Pp 217-227 (2023)
With the rapid development of energy, power electronic equipment plays a crucial role in renewable energy. Modular multilevel converter (MMC) has turned into cutting-edge inverter topology in flexible HVDC and offshore wind power situations. However,
Externí odkaz:
https://doaj.org/article/56cca026f08247709a831d90f368cbea
Autor:
CHAI Jing, LIU Hongrui, ZHANG Dingding, LIU Yongliang, HAN Zhicheng, TIAN Zhicheng, ZHANG Ruixin
Publikováno v:
Gong-kuang zidonghua, Vol 49, Iss 3, Pp 13-22 (2023)
The traditional convergence instrument, 3D laser scanning and other monitoring technologies for the deformation of surrounding rock in the mine roadway can not meet the comprehensive monitoring requirements of complex projects. The technologies have
Externí odkaz:
https://doaj.org/article/7a052b4fa2744b11aacfa0d377344628