Title:
METHOD AND SYSTEM FOR QUICKLY ELIMINATING SPIKE OF CIVIL ENGINEERING STRUCTURAL HEALTH MONITORING SIGNAL
Document Type and Number:
WIPO Patent Application WO/2022/116477
Kind Code:
A1
Abstract:
A method and system for quickly eliminating a spike of a civil engineering structural health monitoring signal, comprising the following steps: (1) quickly identifying a spike position by using a threshold method in a time domain; (2) for a signal within a set range near the spike position, extracting a spike feature in a time-frequency domain by means of wavelet transform; and (3) removing a spike feature component in a wavelet coefficient, and effectively eliminating a spike by means of inverse wavelet transform. According to the method and system, the advantages of a fast calculation speed of the time domain method and high resolution of the time-frequency domain method are combined, such that the algorithm is fast and accurate, and useful signal components are retained while eliminating the spike; the method and system has good applicability to civil engineering structural health monitoring signals having complex time-frequency characteristics and a large data volume.
Inventors:
XIA YUNXIA (CN)
MENG XIANCHUN (CN)
MENG XIANCHUN (CN)
Application Number:
PCT/CN2021/092989
Publication Date:
June 09, 2022
Filing Date:
May 11, 2021
Export Citation:
Assignee:
UNIV QINGDAO TECHNOLOGY (CN)
International Classes:
G06K9/00
Foreign References:
| CN112434634A | 2021-03-02 | |||
| CN101173870A | 2008-05-07 | |||
| CN106646637A | 2017-05-10 | |||
| CN104881567A | 2015-09-02 | |||
| CN111650654A | 2020-09-11 | |||
| US20110231160A1 | 2011-09-22 |
Other References:
XIA YUN-XIA, NI YI-QING: "A wavelet-based despiking algorithm for large data of structural health monitoring", INTERNATIONAL JOURNAL OF DISTRIBUTED SENSOR NETWORKS, vol. 14, no. 12, 1 December 2018 (2018-12-01), pages 1 - 11, XP055937386, ISSN: 1550-1477, DOI: 10.1177/1550147718819095
Attorney, Agent or Firm:
JINAN SHENGDA INTELLECTUAL PROPERTY AGENCY CO., LTD. (CN)
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