Dissertation > Excellent graduate degree dissertation topics show

New sensing detection system for oil and gas pipeline optical reflection and scattering of

Author: WeiZuo
Tutor: QiaoXueGuang
School: Xi'an Optics and Fine Mechanics
Course: Optical Engineering
Keywords: Fiber Bragg grating (FBG) temperature pressure sensing optical time domainanalyzer all-fiber network sensing systems transmission oil and gas pipelines
CLC: TN253
Type: PhD thesis
Year: 2010
Downloads: 112
Quote: 0
Read: Download Dissertation

Abstract


With the automation and information development of oil and gas industry, distributedoptical fiber sensing technology aroused great concern in the non-destructive oil and gaspipeline safety monitoring tests due to its merit, such as anti-electromagnetic interference,corrosion resistance, long-term stability and resistance to high radiation.Based on systematically study of Fiber Bragg grating temperature, pressure sensing anddistributed fiber Rayleigh backscattering sensing, we proposed all fiber-optic pipelinedetection networks. This paper studied theoretically and experimentally in-depthly the fullydistributed fiber optic sensing system, the major elements are as follows:First of all, the development and application status of distributed and quasi-distributedoptical fiber sensing and their applications were summarized, the basic transmission principlesand characteristics in optical fiber and fiber grating were analyzed in-depthly, and FBGtemperature and strain sensing principle model was established.Second, fiber grating pressure sensor, temperature sensor and two-parametersimultaneous measurement techniques were studied，and five new innovative sensing devicewere developed. The results show that: fiber grating sensor devices have good temperature andpressure response linearity and repeatability, no significant hysteresis, applicable to pipelinetemperature and pressure testing. And on this basis，the theoretical model of a single fiberBragg grating simultaneous measurement of temperature and pressure was proposed.Then, the principles and key technologies of optical time domain based on fiber Rayleighbackscattering were analyzed; the new innovative optical time domain analysis based on threetypes of high-speed programmable micro-controller system of AD chips(150Mbps), RAM andFPGA was developed for the development of today’s optical time domain analysis.Multi-function Digital demodulation hardware and software were designed, which effectivelyimprove the system of demodulation and data processing speed.Finally, high dynamic range and high sensitivity of all-fiber distributed system solutionswere developed by using WDM technology, which is suitable for long-distance oil and gaspipeline transportation safety monitoring. Further improve of system and the directions offuture work were proposed.

Related Dissertations

  1. Preparation and Electrocaloric Effect of BaxSr1-xTiO3 Ferroelectric Thin Films,TB383.2
  2. Simulation Analysis on Temperature Stress of RCC Arch Dam and Its Construction Joints Design Research,TV642.2
  3. Tripartite Associations Among Bacteriophage WO, Wolbachia, and Host Affected in the Two-Spotted Spider Mite Tetranychus Urticae Koch,S433.7
  4. Study of Cyclodextrin-induced Non-deoxygenated Room Temperature Phosphorescence of Fluorene and Aminofluorene,O657.3
  5. Research and Improvement stove metal casting production systems,TG23
  6. Application of Temperature-Controlled Ionic Liquid Micro-Extraction in Environmental Analytical Chemistry,X132
  7. Research on Integrated Positioning Card Based on ZigBee and GPS Inside/Outside of Tunnel,TN967.1
  8. Formation of Microporous Mulberry Silk and Its Property,TS141
  9. Research of High-temperature Alloy Machining Simulation Technologies,TG506
  10. Study on Low-temperature Dyeing Technology of Acrylic/Wool Blends,TS193.8
  11. Preparation and Characterization of Luminescent Material SrWO4: Eu3+,TB383.1
  12. Preparation and Characterization of Luminescent Materials BaWO4:Eu3+,TB383
  13. GIS and SPSS-Based Study of Space-time Change of Climate in Three-river-source Area of Qilian Mountains,P467
  14. Biological Studies on Two Stored Product Mites and Their Control by Amblyseius Swirskii,S436.46
  15. Study on Evapotranspiration from Two Kinds of Peat,P931.1
  16. The Effect of Exercise and Control and Loss Weight on Physical Function in Different Air Humidity Within High Temperature,R87
  17. Study on Microwave Heating Characteristics of Fresh-water Surimi and Surimi-soybean Compound,TS254.1
  18. Research on Some Problems about Propagation of Gas Flame Front in Tube,TD712
  19. Junior high school physical heat related concepts in teaching and research,G633.7
  20. The Effect of Low Temperature Stress on Fatty Acid of Cell Membrane in Alfalfa Crowns,S541.9
  21. Research on the Structure Botany Character of Acanthopanax Sessiliflorus,S567.19

CLC: > Industrial Technology > Radio electronics, telecommunications technology > Photonics technology,laser technology > Optical waveguide and integrated optics > Fiber optic components
© 2012 www.DissertationTopic.Net  Mobile