Smart Structures and Systems

  • 제16권3호
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  • Pages.521-535
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  • 2015
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  • 1738-1584(pISSN)
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  • 1738-1991(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Dynamic and static structural displacement measurement using backscattering DC coupled radar

  • Guan, Shanyue (Engineering School of Sustainable Infrastructure and Environment, University of Florida) ;
  • Rice, Jennifer A. (Engineering School of Sustainable Infrastructure and Environment, University of Florida) ;
  • Li, Changzhi (Department of Electrical and Computer Engineering, Texas Tech University) ;
  • Li, Yiran (Department of Electrical and Computer Engineering, Texas Tech University) ;
  • Wang, Guochao (Department of Electrical and Computer Engineering, Texas Tech University)
  • 투고 : 2014.09.10
  • 심사 : 2015.01.07
  • 발행 : 2015.09.25
⟨ 이전 논문 다음 논문 ⟩

초록

Vibration-based monitoring is one approach used to perform structural condition assessment. By measuring structural response, such as displacement, dynamic characteristics of a structure may be estimated. Often, the primary dynamic responses in civil structures are below 5 Hz, making accurate low frequency measurement critical for successful dynamic characterization. In addition, static deflection measurements are useful for structural capacity and load rating assessments. This paper presents a DC coupled continuous wave radar to accurately detect both dynamic and static displacement. This low-cost radar sensor provides displacement measurements within a compact, wireless unit appropriate for a range of structural monitoring applications. The hardware components and operating mechanism of the radar are introduced and a series of laboratory experiments are presented to assess the performance characteristics of the radar. The laboratory and field experiments investigate the effect of factors such as target distance, motion amplitude, and motion frequency on the radar's measurement accuracy. The results demonstrate that the radar is capable of both static and dynamic displacement measurements with sub-millimeter accuracy, making it a promising technology for structural health monitoring.

키워드

참고문헌

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피인용 문헌

  1. High-Precision Motion Detection Using Low-Complexity Doppler Radar With Digital Post-Distortion Technique 2016, https://doi.org/10.1109/TMTT.2016.2519881
  2. Accurate and Robust Displacement Measurement for FMCW Radar Vibration Monitoring 2017, https://doi.org/10.1109/JSEN.2017.2778294
  3. Structural displacement measurements using DC coupled radar with active transponder vol.24, pp.4, 2017, https://doi.org/10.1002/stc.1909
  4. Smart Radar Sensor Network for Bridge Displacement Monitoring vol.24, pp.1, 2019, https://doi.org/10.1061/(ASCE)BE.1943-5592.0001322
  5. Novel Laser and Post-Tensioned Wire-Based System for Short-Term and Long-Term Monitoring Deflections in Bridges vol.29, pp.3, 2015, https://doi.org/10.1080/10168664.2018.1564641
  6. Fiber Bragg Grating-Differential Settlement Measurement System for Bridge Displacement Monitoring: Case Study vol.24, pp.10, 2019, https://doi.org/10.1061/(asce)be.1943-5592.0001470
  7. A Review of Rheological Modeling of Cement Slurry in Oil Well Applications vol.13, pp.3, 2015, https://doi.org/10.3390/en13030570
  8. A Review on Low-Cost Microwave Doppler Radar Systems for Structural Health Monitoring vol.21, pp.8, 2015, https://doi.org/10.3390/s21082612