An integrated large-area flexible piezoelectric sandwich sensing network

Abstract

The invention discloses an integrated large-area flexible piezoelectric interlayer sensor network, and belongs to the technical field of aviation structure health monitoring. The integrated large-area flexible piezoelectric interlayer sensor network is implemented by the following steps: (1) designing a plurality of functional interlayers which comprise piezoelectric sensing elements and integrated interfaces according to a monitoring position, a monitoring object and a monitoring method of a structure; (2) designing an interface interlayer according to the shape of the integrated interface of each functional interlayer and the structural form of each interlayer, wherein the interface interlayer is used for integrating various functional interfaces and realizes the unified input / output of sensing signals of the overall network; (3) integrating all functional interlayers and the interface interlayer to form the integrated large-area flexible piezoelectric interlayer sensor network which can effectively cover the monitoring range of the structure. According to the integrated large-area flexible piezoelectric interlayer sensor network, the lead wire layout of a piezoelectric sensor network in a large-size structure health monitoring application can be simplified; the weight of lead wires is reduced; the accuracy and the consistency of piezoelectric sensing signals can be simplified; therefore, the integrated large-area flexible piezoelectric interlayer sensor network has a very good application prospect.

Description

technical field [0001] The invention relates to an integrated large-area flexible piezoelectric interlayer sensor network, which belongs to the technical field of aviation structure health monitoring. Background technique [0002] Piezoelectric sensitive elements have the advantages of high sensitivity, wide operating frequency range, and large dynamic range, and have been widely used in the research of structural health monitoring. Since it is sensitive to small damages such as cracks and delaminations, the structural health monitoring method based on piezoelectric sensitive elements and Lamb wave active and passive diagnostic technologies is one of the most effective technical methods at present. When implementing large-scale monitoring of large-scale structures, a large number of piezoelectric sensitive elements are often required to work in the form of sensor networks. However, in laboratory research, sensors are mostly arranged manually, and there are the following pro...

AI Technical Summary

Problems solved by technology

[0007] The present invention proposes an integrated large-area flexible piezoelectric interlayer sensor network, which overcomes the deficiencies in the existing distributed monitoring of multiple single-form interlayer networks, and realizes integrated large-area sensor networks for large-scale and complex structural health monitoring applications. The design of the flexible piezoelectric interlayer sensor network can simplify the layout of the lead wires of the piezoelectric sensor network, reduce the weight of the lead wires, and improve the accuracy and consistency of the piezoelectric sensor signals while meeting the application requirements

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