公开(公告)号：US20200166384A1

公开(公告)日：2020-05-28

申请号：US16261631

申请日：2019-01-30

Applicant: Dalian University of Technology

Inventor： Dapeng Zhou ,  Wei Peng

IPC: G01D5/353 ,  G01K11/32 ,  G01L1/24

Abstract: The present invention discloses a computational distributed fiber-optic sensing method and system. The method includes: determining a signal source for modulating intensity of incident light, where the signal source is a binary sequence; using an optical pulse sequence obtained after modulation is performed using the signal source, as an incident light signal, and emitting the incident light signal to an optical fiber; acquiring, according to specified sampling frequency, a scattered light signal obtained through optical fiber scattering; determining, according to the incident light signal and the scattered light signal, a time-domain reconstructed image of a to-be-detected light signal by using a time domain-based differential ghost imaging protocol; and determining a sensing signal of the optical fiber according to the time-domain reconstructed image of the to-be-detected light signal. The computational distributed fiber-optic sensing method and system provided in the present invention feature low sampling frequency, low device complexity, and low costs.

公开(公告)号：US11105658B2

公开(公告)日：2021-08-31

申请号：US16261631

申请日：2019-01-30

Applicant: Dalian University of Technology

Inventor： Dapeng Zhou ,  Wei Peng

IPC: G01D5/353 ,  G01K11/32 ,  G01L1/24 ,  G01K11/322

Abstract: The present invention discloses a computational distributed fiber-optic sensing method and system. The method includes: determining a signal source for modulating intensity of incident light, where the signal source is a binary sequence; using an optical pulse sequence obtained after modulation is performed using the signal source, as an incident light signal, and emitting the incident light signal to an optical fiber; acquiring, according to specified sampling frequency, a scattered light signal obtained through optical fiber scattering; determining, according to the incident light signal and the scattered light signal, a time-domain reconstructed image of a to-be-detected light signal by using a time domain-based differential ghost imaging protocol; and determining a sensing signal of the optical fiber according to the time-domain reconstructed image of the to-be-detected light signal. The computational distributed fiber-optic sensing method and system provided in the present invention feature low sampling frequency, low device complexity, and low costs.

公开(公告)号：US20210180998A9

公开(公告)日：2021-06-17

申请号：US16261631

申请日：2019-01-30

Applicant: Dalian University of Technology

Inventor： Dapeng Zhou ,  Wei Peng

IPC: G01D5/353 ,  G01K11/32 ,  G01L1/24

Abstract: The present invention discloses a computational distributed fiber-optic sensing method and system. The method includes: determining a signal source for modulating intensity of incident light, where the signal source is a binary sequence; using an optical pulse sequence obtained after modulation is performed using the signal source, as an incident light signal, and emitting the incident light signal to an optical fiber; acquiring, according to specified sampling frequency, a scattered light signal obtained through optical fiber scattering; determining, according to the incident light signal and the scattered light signal, a time-domain reconstructed image of a to-be-detected light signal by using a time domain-based differential ghost imaging protocol; and determining a sensing signal of the optical fiber according to the time-domain reconstructed image of the to-be-detected light signal. The computational distributed fiber-optic sensing method and system provided in the present invention feature low sampling frequency, low device complexity, and low costs.

公开(公告)号：US12044591B2

公开(公告)日：2024-07-23

申请号：US17259847

申请日：2020-08-26

Applicant: DALIAN UNIVERSITY OF TECHNOLOGY

Inventor： Zhenguo Jing ,  Wei Peng ,  Yueying Liu ,  Qiang Liu ,  Ang Li

IPC: G01L9/00 ,  G02B6/255

CPC classification number: G01L9/0077 ,  G02B6/2551 ,  G02B6/2552

Abstract: A miniature diaphragm-based fiber-optic tip FP pressure sensor, and fabrication method and application thereof. A miniature diaphragm-based fiber-optic tip FP pressure sensor includes an optical fiber, a hollow-core optical fiber, and a pressure sensing diaphragm, wherein the optical fiber and the hollow-core optical fiber have the same diameter, the two are spliced by arc welding; and the pressure sensing diaphragm is bonded to the endface of the hollow-core optical fiber by hydroxide catalysis bonding. The FP pressure sensor can not only realize the all-silica structure of a sensor, but also make the joint of each component free of organic polymer, and has extremely high long-term stability and thermal stability. Meanwhile, by a fabrication method of the miniature diaphragm-based fiber-optic tip FP pressure sensor, the application range and service life of the sensor are increased, and fabrication costs are reduced.

公开(公告)号：US11692827B2

公开(公告)日：2023-07-04

申请号：US17626299

申请日：2021-07-28

Applicant: DALIAN UNIVERSITY OF TECHNOLOGY

Inventor： Zhenguo Jing ,  Wei Peng ,  Ang Li ,  Yueying Liu ,  Qiang Liu ,  Zhiyuan Huang ,  Yang Zhang

IPC: G01C19/72 ,  G01B9/0209

CPC classification number: G01C19/721 ,  G01B9/0209 ,  G01C19/722

Abstract: A white light interferometric fiber-optic gyroscope based on a rhombic optical path difference bias structure includes a laser, a rhombic optical path difference bias structure, a fiber coil and a photodetector. The white light interferometric fiber-optic gyroscope adopts an all-fiber structure to simplify the complexity of a gyroscope system and reduce the overall cost. A white light interferometric demodulation algorithm is used to realize linear output of rotation rate signals.