Dissertation > Excellent graduate degree dissertation topics show

Fiber optic level sensor studies and trials

Author: ChengYi
Tutor: YeLin
School: Huazhong University of Science and Technology
Course: Detection Technology and Automation
Keywords: Optical fiber Liquid level detection Synchronization Credits Correlation detection
CLC: TP212
Type: Master's thesis
Year: 2011
Downloads: 92
Quote: 0
Read: Download Dissertation

Abstract


Aircraft fuel system accuracy and reliability of the safe use of aircraft has an important impact . Measurement of aircraft fuel technology research and development started late than abroad , fuel measurement technology is still relatively old. Research a high- sensitivity, strong anti-interference level detection technology - fiber type level detection technology, has a very important practical significance , national staff actively developed based on different principles of level sensors . Fiber optic liquid level sensor liquid level sensor with other unmatched by many advantages, such as simple structure , light weight, electromagnetic compatibility, high temperature, corrosion and so on. This article describes the optical liquid level detection technology works , according to the various characteristics of optical fiber , a sensor solutions for the design and feasibility analysis, and describes the signal processing circuit design and level tests. Select the light emitting diode and a phototransistor as the sensor light source and the light detector , based on the modulation and demodulation principle , the design of the optical fiber level sensor signal measurement system, including the modulation of the light source driver , a weak signal amplification. In the signal receiving part of the design of the low-noise preamplifier , the synchronization signal processing section integrator associated with the correlator , the photodetector signal with the reference signal obtained by cross-correlation calculation . Conditions for the laboratory environment , designed and set up a test platform level , a large number of experimental studies based on the received optical level sensor level - voltage characteristics , through theoretical analysis and experimental methods to verify the sensor solutions feasibility , and detailed analysis of the characteristics of a variety of test sensors , the sensor provides a large improvement of testing and data to support . The results showed that : Fiber liquid level detection method is feasible , and its broad application prospects are very worthy of our in-depth study . In future work , the improved sensor signal processing circuit structure and improving the performance of the study will focus on the direction .

Related Dissertations

  1. Research on Photo-Electric System of Rotating Shaft Radial Runout and Rotary Speed Real-Time Measurement,TH822
  2. Research on High-temperature Sapphire Optical Fiber Sensor,TH811
  3. Reduced Complexity MLSE Algorithm Based on BDFE in Optical Fiber Communication System,TN929.11
  4. Research on the Nonlinear Effects of DPSK Optical Fiber Communication Systems,TN929.11
  5. Research of Absorbed Fiber-optic CO Gas Sensor Signal Processing,TP212
  6. A Research on Optical Chaotic Secure Communication System Based on Optisystem,O415.5
  7. Research and Design for CDR in Ultra High-speed Optical Fiber Communication Systems,TN929.11
  8. Based on Brillouin scattering distributed sensing key technologies,TP212.14
  9. Undersea optical networking products for Quality Management Case Studies,F426.6
  10. Digital substation relay protection system reliability design technology,TM76
  11. The Development of the Interference Testing System for Optical Fiber Connector Surface,TN253
  12. Fiber optic temperature measurement of DC current measurement techniques,TM933.1
  13. Plasma heating cutting processing line temperature measurement system design,TG664
  14. Heilongjiang Mobile Communications cable line maintenance and management,TN913.33
  15. Brillouin erbium-doped single-mode fiber laser and its application,TN248
  16. Integrated Fiber Optic CE System,TN492
  17. Light control module vacuum circuit breaker control system design phase selection,TM561.2
  18. Chaotic secure communication system modulation and optical fiber channel performance study,TN918.8
  19. Design and Implementation of Fiber-optic Image Transmission System Based on PCI Express,TN929.11
  20. The Research on the Practical Application of Fiber-optical Protection for Transmission Lines,TM773
  21. The Data Acquisition Technology of Electronic Transformer,TM45

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