Earticle

초록

영어

In order to detect the wavelength drift of FBG (fiber Bragg grating) sensors, the real-time demodulating system based on tunable F-P filter (TFPF) was built. The optical parts of the demodulation system include broadband optical source, TFPF unit, reference grating model, sensing grating array, and couplers. The electronic parts of the demodulation system consist of AD converting unit, DA converting unit, field programmable gate array (FPGA) unit and human-computer interaction unit. With the high-speed data processing capacity, FPGA was utilized to realize digital logic circuits of the demodulation system. It includes resetting unit, phase locked loop (PLL) unit, driving TFPF unit, detecting keys unit, LCD displaying unit, FIR filtering unit and data calculating unit. The demodulating system has such features as high reliability and speed, instantaneity, and programmability. It can satisfy the requirements of wavelength demodulation of FBG sensors in practical engineering.

목차

Abstract
 1. Introduction
 2. Design of Real-time Demodulation System
 3. Hardware Design
  3.1. D/A Conversion Circuits
  3.2. A/D Conversion Circuits
  3.3. Human-computer Interaction Unit
 4. Design of System Program
  4.1. Resetting Unit
  4.2. PLL Unit
  4.3. Key Detection Unit
  4.4. TFPF Driving Unit
  4.5. FIR Filtering Unit
  4.6. Peak Clipping Unit
  4.7. LCD Display Unit
 5. Experimental Results
 6. Conclusion
 References

키워드

저자

• Peng Wang [ College of Electrical and Electronic Engineering, Harbin University of Science and Technology, Harbin, 150080, China ]
• Minglei Shao [ College of Electrical and Electronic Engineering, Harbin University of Science and Technology, Harbin, 150080, China ]
• Xu Han [ College of Electrical and Electronic Engineering, Harbin University of Science and Technology, Harbin, 150080, China ]
• Shanshan Li [ College of Electrical and Electronic Engineering, Harbin University of Science and Technology, Harbin, 150080, China ]

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  International Journal of Smart Home

• 간기

  격월간

• pISSN

  1975-4094

• 수록기간

  2008~2016

• 십진분류

  KDC 505 DDC 605