Dissertation > Excellent graduate degree dissertation topics show

Research on Demodulation Technique of Fiber Bragg Grating Sensor Based on Simulated Annealing Algorithm

Author: WangJingBo
Tutor: YangGuangXue
School: Harbin University of Science and Technology
Course: Signal and Information Processing
Keywords: fiber Bragg grating spectral shape multiplexing simulated annealing algorithm
CLC: TP212.14
Type: Master's thesis
Year: 2011
Downloads: 27
Quote: 0
Read: Download Dissertation

Abstract


FBG (Fiber Bragg Grating) sensor, a kind of functional fiber optic sensor which made of fiber Bragg grating sensitive characteristics, is the focus of optical fiber sensor technique field. FBG sensor is a kind of wavelength modulated sensor, and it has been widely used for the superiorities of resistance to electromagnetic interference, measurement range, corrosion resistance, good stability, easy multiplexing, as well as the advantages of other sensors. Therefore, how to accurately measure the shift of Bragg wavelength becomes the key problem in the research on the FBG sensor.In this thesis, the mechanism of FBG sensor, several typical demodulation method and FBG sensor multiplexing technique, the advantages and disadvantages of which are summarized, are analyzed in details. After research on the principle, advantages and disadvantages of traditional simulated annealing algorithm, a modified algorithm is proposed to improve its behavior. The demodulation method based on F-P tunable filter, using the improved the simulated annealing algorithm and spectral shape multiplexing technique is presented. The theoretical feasibility of the demodulation method is verified by the theory and MATLAB simulation.According to the actual situation and specific simulated annealing algorithm requirement, the right ARM chip (S3C2440A) is selected. The core algorithm and the control software are programmed in C language. The PC interface is programmed in VC++. The communication between PC and lower level computer is completed via serial port (RS-232), and the demodulation results can be received and displayed in superior machine in the same way.The improved simulated annealing algorithm is used on the ARM9 (S3C2440A) to demodulate the simulated signal data. Experimental results show that spectral shape multiplexing technique and the improved simulated annealing algorithm can still demodulate the center wavelengths even when the spectrum of one FBG partly or wholly overlaps with others’. Therefore, the method can save spectral bandwidth and increase the number of multiplexed FBG sensors effectively. Meanwhile, the improved simulated annealing algorithm is faster than the traditional simulated annealing algorithm, and can process the data faster.

Related Dissertations

  1. Civilian ship management system design and implementation,TP311.52
  2. Radar jamming and interference covering optimal allocation of resources,TN974
  3. Optical packet switching in optical code marking technology research,TN929.1
  4. Research and Application of hybrid genetic algorithm - based shop scheduling problem,TP18
  5. Method for Reducing Crosstalk Interference in an Inline Fabry-Perot Based Fiber Bragg Grating Sensor Array Based on Layer Peeling Algorithm,TP212
  6. Paralleling Genetic Annealing Algorithm with OpenMP,TP301.6
  7. Optimization on Input Operations and Management Information System Development of a Steel Plate Stacking Yard in a Shipyard,F426.474
  8. Optical Properties of Amplitude Sampled Fiber Gratings Fabricated by Splicing Technology,TN253
  9. Study on Design and Tuning Methods of Sampled Fiber Gratings with Special Structure,TN253
  10. Carbon fiber reinforced composites embedded fiber Bragg grating sensing research,TN253
  11. Analysis of the Apodization Technique for Chirped Fiber Bragg Grating,TN253
  12. Multichannel Fiber Bragg Grating Monitoring System Based on DWDM,TN253
  13. Research on Model and Optimization of Production Scheduling for Copper Sheet and Strip Oriented MES,TP391.7
  14. The Study of Cable’s Temperature Monitoring Systm Using Distributed Fiber Bragg Grating Based on ARM,TM247
  15. Approach of Fiber Grating Sensing Technology for Dynamic Strain and Cylinder Pressure of Internal Combustion Engine,TK407
  16. Study on Multi-Floor Facility Layout Problem Based on M/G/1 Lift Handling System,TU857
  17. Design and Implementation of Motor Train Sets Scheduling System for Passenger Dedicated Lines,U268
  18. Research on the Method of Resisting Co-channel Interference with LPI Radar,TN974
  19. Branch flight training scheduling system,V323
  20. A hollow cylinder structure - based fiber Bragg grating under - rotating coaxial cylinder viscometer,TH836
  21. Based shaft seal diaphragm structure fiber Bragg grating target flow sensor,TH814

CLC: > Industrial Technology > Automation technology,computer technology > Automation technology and equipment > Automation components,parts > Transmitter ( converter),the sensor > Physical sensors > Light sensor
© 2012 www.DissertationTopic.Net  Mobile