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Information-integration based structural damage diagnosing method and structural damage diagnosing system

A technology for structural damage and diagnosis methods, which is applied in the testing, measuring devices, instruments, etc. of machines/structural components. Conducive to intelligence and the effect of reducing load

Active Publication Date: 2017-02-01
深圳高速工程检测有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, this kind of wireless sensor network cannot obtain results similar to the overall mode shape that require data fusion of multiple sensor nodes to be calculated, thus restricting its development in the field of structural health monitoring

Method used

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  • Information-integration based structural damage diagnosing method and structural damage diagnosing system
  • Information-integration based structural damage diagnosing method and structural damage diagnosing system
  • Information-integration based structural damage diagnosing method and structural damage diagnosing system

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Embodiment Construction

[0021] refer to figure 2 , is a method for diagnosing structural damage based on information fusion according to an embodiment of the present invention. Among them, the base station communicates with at least one cluster head, each cluster head communicates with at least one sensor node, and information is shared among all cluster heads. The structural damage diagnosis method includes:

[0022] Step 101: Each cluster head receives a collection instruction from the base station, and distributes demand information to each sensor node in the cluster according to the collection instruction.

[0023] The demand information includes the trigger condition c of each sensor node j .

[0024] Step 102: Each sensor node collects the feature quantity signal of the structure in the time domain according to the demand information, and extracts the feature quantity using the NExT (Natural Excitation Technique) / RTD (Random Decrement Technique) conversion function The correlation function ...

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Abstract

According to the embodiments of the invention, an information-integration based structural damage diagnosing method and structural damage diagnosing system are provided. A base station communicates with at least one cluster head, each cluster head communicating with at least one sensing node. The method comprises the following steps. Each cluster head receives an acquisition instruction from the base station and assigns the demand information to the sensing nodes within the cluster head according to the acquisition instruction. Each sensing node, according to the demand information, acquires the characteristic quantity signal of the structure in the time domain, extracts the signal-related function and weight, and sends them to the cluster head. Each cluster head obtains the modal parameters according to the signal-related function and the weight and the positions of the sensing nodes, compares the modal parameters with the preset health condition parameters to obtain the structural damage diagnosing information within the cluster and sends them to the base station. The base station generates a damage diagnosing report based on the damage diagnosing information transmitted by each cluster head. Through the above-described manner and according to the embodiment of the present invention, it is possible to improve the accuracy of the structural damage diagnosing, to reduce the traffic load, and to realize the real-time diagnosing of the structure.

Description

technical field [0001] The embodiments of the present invention relate to the technical field of structural health monitoring, in particular to a structural damage diagnosis method and a structural damage diagnosis system based on information fusion. Background technique [0002] Structural health monitoring refers to 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. Its research purpose is to obtain the response of the structure to environmental stimuli (man-made or natural) in real time through the sensor network in the structure, and extract the damage and aging information of the structure from it to provide reference for the use and maintenance of the structure. Because the wired sensor network has the characteristics of good stability, high accuracy, fast data transmission speed, good anti-interference ability...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M99/00
CPCG01M99/00
Inventor 杨进许烈平柳成荫宋大鹏
Owner 深圳高速工程检测有限公司
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