Structure health monitoring system based on wireless sensing network and multiagent cooperation

Abstract

The invention discloses a structural health monitoring system based on a wireless sensor network and multi-subject cooperation, which includes a central management layer and a local monitoring layer, and the central management layer and the local monitoring layer are connected through a gateway; the local monitoring layer includes multiple a local monitoring unit, and each local monitoring unit is wirelessly connected to the gateway through a Sink node; the local monitoring unit is composed of a plurality of monitoring subunits, and the monitoring subunits include a sensing subject, a data processing subject, a damage assessment subject and a wireless The sending and receiving body; the central management layer includes an information fusion body, a central coordination body and a user interface body. The gateway is wirelessly connected to the information fusion body and the central coordination body, and both the information fusion body and the central coordination body are connected to the user interface body. The invention realizes the large-area online monitoring function of the structure through the parallel distributed structure of multi-subject cooperation, fusion of various sensor information and structure state evaluation results.

Description

technical field [0001] The invention relates to the technical field of engineering structure health monitoring, in particular to a structural health monitoring system based on a wireless sensor network and multi-subject cooperation. Background technique [0002] The health monitoring technology of engineering structures has been a hot research direction in recent years. In the field of aerospace, due to its light weight, high strength and high modulus, composite materials can improve the efficiency of aircraft structures and reduce the weight factor of aircraft structures, so they are more and more used in aircraft. At present, the most advanced fourth-generation fighter F22 in the world, the amount of resin-based composite materials has reached 24% of the weight of the aircraft structure. Generally speaking, laminated composite materials have outstanding performance in terms of reducing structural weight, improving bearing capacity and stealth. However, its performance in ...

AI Technical Summary

Problems solved by technology

However, if it is aimed at the actual engineering application object, the application of intelligent structure technology will be more complicated and difficult.

Since the structure to be monitored is no longer a small test piece, the number of structural sensing devices and the complexity of the required decision-making objects will be greatly increased, which will bring about the complexity of the structural health monitoring network , The amount of computation used for signal information processing, the amount of information that needs to be communicated and transmitted, the management and coordination requirements between various parts of the system, and the energy consumed by the monitoring network have increased sharply.

These problems limit the development of structural health monitoring technology

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