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A structural damage identification system and identification method based on time series symbolization

A technology for structural damage and identification methods, which is applied in the testing, measuring devices, instruments, etc. of machines/structural components. It can solve problems such as the inability to instantly identify structural damage, the poor noise resistance of sensors, and the influence of judgment results, so as to prevent false negatives. The phenomenon and algorithm are concise and easy to understand, and the effect of improving the recognition efficiency

Active Publication Date: 2016-09-14
SHANGHAI CONSTRUCTION GROUP
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  • Description
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AI Technical Summary

Problems solved by technology

[0005] In view of the shortcomings of the existing structural health monitoring methods, such as large amount of data, complex calculation and easy omission, the occurrence of structural damage cannot be identified immediately, and the poor anti-noise performance of the sensor affects the judgment results

Method used

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  • A structural damage identification system and identification method based on time series symbolization
  • A structural damage identification system and identification method based on time series symbolization
  • A structural damage identification system and identification method based on time series symbolization

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Embodiment Construction

[0041] A structural damage identification system and identification method based on time series symbolization proposed by the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. Advantages and features of the present invention will be apparent from the following description and claims. It should be noted that all the drawings are in a very simplified form and use imprecise scales, and are only used to facilitate and clearly assist the purpose of illustrating the embodiments of the present invention.

[0042] combine figure 1 A structural damage identification system based on time series symbolization of the present invention includes a data acquisition unit 10, which is used to collect acceleration time history data in a healthy state of the structure. Acceleration sensors can be arranged on the key fatigue components of the healthy structure The data is obtained, but is not limited to this, and c...

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Abstract

The invention provides a structural damage recognition system and a recognition method based on time series symbolization, and relates to the technical field of large civil engineering structure health monitoring. The invention aims at the problems of big data volume, complexity in calculation, big possibility of failing to report, and incapability of recognizing the structural damage in time of the traditional structure health monitoring method. The method comprises the following steps: 1) collecting and storing a structural non-healthy state series histogram; 2) obtaining the real-time accelerated speed time interval data of a current structure to be monitored, and processing to generate a real-time state series histogram; 3) judging whether the real-time state series histogram is matched with the structural non-healthy state series histogram or not, if so, representing that the current structure to be monitored is damaged, and if not, representing that the current structure to be monitored is under the healthy state. According to the invention, the data transmission amount between system functional units is reduced, the data transmission speed is quickened, all abnormal states of the structure are guaranteed to be recognized, the report failure phenomenon is avoided, and the accuracy of a judgment result is guaranteed.

Description

technical field [0001] The invention relates to the technical field of health monitoring of large civil engineering structures, in particular to a structural damage identification system and identification method based on time series symbolization. Background technique [0002] With the prolongation of service time and the impact of uncertain disaster events, civil engineering structures will be damaged to varying degrees during service. If it is not discovered in time, the long-term damage accumulation will have a great impact on the safety of the structure, causing unnecessary personnel and property losses. Therefore, timely identification of structural damage is of great significance. [0003] Structural Health Monitoring (SHM for short) is the use of on-site non-destructive sensing technology to achieve the purpose of detecting structural damage or degradation through the analysis of structural system characteristics including structural response. Specifically, the char...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M99/00
Inventor 李荣帅龚剑
Owner SHANGHAI CONSTRUCTION GROUP
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