Sensor arrangement method and system

Abstract

The invention relates to a sensor arrangement method and system. The method comprises the following steps: determining structural parameters of a to-be-monitored object; determining a basic mode of sensor arrangement; using the centroid of a main body structure or the geometric center of a key monitoring area of the main body structure for constructing an auxiliary circle / or graph which can exactly wrap all the holes; specifically distributing points of sensors; and adjusting the distribution points of the sensors to complete sensor arrangement. According to the method, the limitation of an existing sensor arrangement method is overcome, and the impact recognition precision of a porous plate structure is greatly improved. The method can be widely applied to the technical field of ocean engineering.

Description

technical field [0001] The invention relates to the technical field of ocean engineering, in particular to a sensor arrangement method and system for impact identification of a roof thin plate structure of an underwater protection facility. Background technique [0002] The underwater production system is an important element in deepwater oil and gas exploitation. Compared with land-based equipment, the underwater production system is highly specialized, has the characteristics of high technology content, high reliability requirements and high profit, and is becoming an efficient development of deepwater. Important technical means for oil and gas fields and marginal oil fields. [0003] Although the subsea production system has many advantages, the key equipment located in the navigable area is easily affected by accidents such as merchant ships, fishing boats, oil tankers, etc., such as anchoring, fishing net hauling, and shipwrecks. etc. may be damaged by the impact of fa...

AI Technical Summary

Problems solved by technology

[0005] However, the global dynamic response of the roof sheet structure of underwater protective facilities depends largely on the reconstruction of discrete sensor signals, and the number and location of sensors have a significant impact on the results

When the sensor arrangement density is too high, it will lead to a sharp increase in the calculation time and a serious waste of resources; on the contrary, when the density is too small, the reconstruction results will be severely distorted, and the required global response will not even be obtained.

For traditional simple structures, the arrangement of sensors can be distributed in a rectangular four-point manner, but most structures in actual engineering will present special situations of heterogeneity, asymmetry and discontinuity. At this time, for underwater protection facilities The sensor arrangement of complex structures such as top cover sheets has become an urgent problem to be solved

[0006] The existing sensor layout methods are mostly used for non-porous continuous symmetrical structures, and the layout methods are mostly simple rectangular grid four-point type. Although this type of method considers the influence of grid density in the optimization process, it does not fundamentally Subversion of this simple rectangular arrangement mode; however, this arrangement method appears to be stretched when dealing with complex thin-plate structures with holes such as the roof of underwater protective facilities, resulting in large errors in recognition results

Images