Title:
NON-CONTACT VISUAL MONITORING SYSTEM AND METHOD FOR FLEXIBLE PROTECTION STRUCTURE AGAINST ROCKFALL DISASTERS
Document Type and Number:
WIPO Patent Application WO/2023/236897
Kind Code:
A1
Abstract:
A non-contact visual monitoring system for a flexible protection structure against rockfall disasters, comprising a hardware system and a data analysis system. The hardware system employs multiple distributed high-definition high-speed cameras to collect a dynamic image sequence of the protection structure under rockfall impact in a non-contact manner. The data analysis system comprises a full-field impact deformation state tracking module and a multi-measurement-point large impact deformation extraction module. The full-field impact deformation state tracking module captures the temporal-spatial change of the impact deformation of the protection system by means of an inter-frame optical flow method, and constructs a two-dimensional distribution map of velocity magnitude to perform full-field full-process tracking on the large deformation of the system. The multi-measurement-point large impact deformation extraction module extracts a dynamic deformation curve of multiple areas of the protection structure by using a feature point detection and matching algorithm, and calculates the maximum deformation of the protection structure under rockfall impact, thereby laying a key data foundation for evaluating the working performance of the flexible protection system. Further provided is a non-contact visual monitoring method for the flexible protection structure against rockfall disasters.
Inventors:
TIAN YONGDING (CN)
TONG JIAHUI (CN)
LV YANGFENG (CN)
YANG XIAOYU (CN)
CHEN JIAXIN (CN)
MA LINTAO (CN)
XU HU (CN)
YU ZHIXIANG (CN)
TONG JIAHUI (CN)
LV YANGFENG (CN)
YANG XIAOYU (CN)
CHEN JIAXIN (CN)
MA LINTAO (CN)
XU HU (CN)
YU ZHIXIANG (CN)
Application Number:
PCT/CN2023/098272
Publication Date:
December 14, 2023
Filing Date:
June 05, 2023
Export Citation:
Assignee:
UNIV SOUTHWEST JIAOTONG (CN)
International Classes:
G01B11/16; G06T7/00
Foreign References:
| CN112458938A | 2021-03-09 | |||
| CN109559348A | 2019-04-02 | |||
| CN115060185A | 2022-09-16 | |||
| CN109300377A | 2019-02-01 | |||
| CN105133672A | 2015-12-09 | |||
| JP2001352537A | 2001-12-21 |
Other References:
YU HE-LONG; LIU HAO-YANG; SU HENG-QIANG: "Material Deformation Displacement Measurement Method Based on Light Flow Tracing Technology", JILIN DAXUE XUEBAO (LIXUE BAN) - UNIVERSITY. JOURNAL (SCIENCE EDITION), JILIN DAXUE CHUBANSHE, CHANGCHUN, CN, vol. 52, no. 2, 31 March 2014 (2014-03-31), CN , pages 331 - 335, XP009550935, ISSN: 1671-5489, DOI: 10.13413/j.cnki.jdxblxb.2014.02.33
GUO LIPING, YU ZHIXIANG: "A Gaussian wavelet-based method for extracting rockfall motion information in consecutive impact tests on flexible barrier systems", INTERNATIONAL JOURNAL OF IMPACT ENGINEERING., PERGAMON., GB, vol. 167, 1 September 2022 (2022-09-01), GB , pages 104264, XP093114584, ISSN: 0734-743X, DOI: 10.1016/j.ijimpeng.2022.104264
GUO LIPING, YU ZHIXIANG: "A Gaussian wavelet-based method for extracting rockfall motion information in consecutive impact tests on flexible barrier systems", INTERNATIONAL JOURNAL OF IMPACT ENGINEERING., PERGAMON., GB, vol. 167, 1 September 2022 (2022-09-01), GB , pages 104264, XP093114584, ISSN: 0734-743X, DOI: 10.1016/j.ijimpeng.2022.104264
Attorney, Agent or Firm:
CHENGDU DONGHENG ZHISHENG INTELLECTUAL PROPERTY AGENCY (SPECIAL GENERAL PARTNERSHIP) et al. (CN)
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