Title:
STRUCTURAL DISPLACEMENT ESTIMATION METHOD AND SYSTEM THEREFOR
Document Type and Number:
WIPO Patent Application WO/2023/243788
Kind Code:
A1
Abstract:
A structural displacement estimation method is performed by a computer program executed in a computing device. The computer program may cause a processor of the computing device to perform an automatic initial correction step and a structure displacement monitoring step. The automatic initial correction may be performed by: collecting measurement values from each of a radar device and an accelerometer directly installed on a structure; automatically determining one optimal target in a plurality of target candidate groups including targets detected by the radar device; and automatically calculating final transform coefficients for transforming a displacement in the direction of the line of sight to the optimal target into a displacement in an actual vibration direction. The structural displacement monitoring can increase the accuracy of structural displacement measurement by calculating a final displacement by fusing, on the basis of an FIR filter, a radar-based displacement obtained by applying the final transform coefficients to phases extracted from radar measurement values for the optimal target and an acceleration-based displacement obtained by double-integrating measurement values collected from the accelerometer.
Inventors:
SOHN HOON (KR)
MA ZHAN XIONG (KR)
CHOI JAE MOOK (KR)
MA ZHAN XIONG (KR)
CHOI JAE MOOK (KR)
Application Number:
PCT/KR2022/018878
Publication Date:
December 21, 2023
Filing Date:
November 25, 2022
Export Citation:
Assignee:
KOREA ADVANCED INST SCI & TECH (KR)
International Classes:
G01B21/32; G01B21/04; G01D1/04; G01P15/00; G01S13/06; G01S13/88; G06F17/10
Domestic Patent References:
| WO2007014470A2 | 2007-02-08 |
Foreign References:
| KR102002904B1 | 2019-07-24 | |||
| JP2022026083A | 2022-02-10 |
Other References:
COPPI FRANCESCO, GENTILE CARMELO, PAOLO RICCI PIER, TOMASINI E. P.: "A Software Tool for Processing the Displacement Time Series Extracted from Raw Radar Data", AIP CONFERENCE PROCEEDINGS, AMERICAN INSTITUTE OF PHYSICS, NEW YORK, US, vol. 1253, 1 June 2010 (2010-06-01), NEW YORK, US , pages 190 - 201, XP093118634, ISSN: 0094-243X, DOI: 10.1063/1.3455458
PIERACCINI M., DEI D., MECATTI D.: "Interferometric radar for testing large structures with a built-in seismic accelerometer", SENSORS AND ACTUATORS A: PHYSICAL, ELSEVIER BV, NL, vol. 204, 1 December 2013 (2013-12-01), NL , pages 25 - 30, XP093118637, ISSN: 0924-4247, DOI: 10.1016/j.sna.2013.09.028
MA ZHANXIONG, CHOI JAEMOOK, SOHN HOON: "Structural Displacement Estimation Through The Fusion Of Fmcw Millimeter Wave Radar And Accelerometer", THE 8TH WORLD CONFERENCE ON STRUCTURAL CONTROL & MONITORING, 1 June 2022 (2022-06-01) - 9 June 2022 (2022-06-09), pages 1 - 8, XP093118635
MA et al. 밀리미터파 레이더와 가속도계 기반 구조물 변위 계측 방법. 출처: 2021년도 한국교량및구조공학회 기술컨퍼런스. 26 November 2021, pp. 60 and 61, non-official translation (Structural Displacement Estimation Method Based on Millimeter Wave Radar and Accelerometer. Retrieved from Korean Institute of Bridge and Structural Engineers Technology Conference 2021.)
PIERACCINI M., DEI D., MECATTI D.: "Interferometric radar for testing large structures with a built-in seismic accelerometer", SENSORS AND ACTUATORS A: PHYSICAL, ELSEVIER BV, NL, vol. 204, 1 December 2013 (2013-12-01), NL , pages 25 - 30, XP093118637, ISSN: 0924-4247, DOI: 10.1016/j.sna.2013.09.028
MA ZHANXIONG, CHOI JAEMOOK, SOHN HOON: "Structural Displacement Estimation Through The Fusion Of Fmcw Millimeter Wave Radar And Accelerometer", THE 8TH WORLD CONFERENCE ON STRUCTURAL CONTROL & MONITORING, 1 June 2022 (2022-06-01) - 9 June 2022 (2022-06-09), pages 1 - 8, XP093118635
MA et al. 밀리미터파 레이더와 가속도계 기반 구조물 변위 계측 방법. 출처: 2021년도 한국교량및구조공학회 기술컨퍼런스. 26 November 2021, pp. 60 and 61, non-official translation (Structural Displacement Estimation Method Based on Millimeter Wave Radar and Accelerometer. Retrieved from Korean Institute of Bridge and Structural Engineers Technology Conference 2021.)
Attorney, Agent or Firm:
PARK, Young-woo (KR)
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