Ship body structure stress long-term monitoring alarm system

Abstract

The invention provides a ship body structure stress long-term monitoring alarm system, which relates to the technical field of ship monitoring, and comprises a plurality of data acquisition devices used for acquiring ship body structure deformation data and real-time temperature data of each preset monitoring point; and an analysis workstation. The analysis workstation comprises a data storage module used for storing preset measuring point types, ship body structure deformation data and real-time temperature data of all preset monitoring points; a structure evaluation module used for evaluating the ship body structure according to the ship body structure deformation data, the real-time temperature data, the preset measuring point type and the preset interval time to obtain a ship body structure evaluation result; and a structure alarm module used for comparing the ship body structure evaluation result with a corresponding preset threshold value and giving structure monitoring alarm information according to a comparison result. The ship structure stress can be monitored in real time for a long time, the dangerous stress can be alarmed, and the safety risk of the ship structure is effectively reduced; and the system is high in real-time performance and convenient to monitor and alarm.

Description

Technical field [0001] The invention relates to the technical field of ship monitoring, in particular to a long-term monitoring and warning system for the stress of a hull structure. Background technique [0002] The safety of the hull structure is the cornerstone of ensuring the safety of ship operations. In order to improve the safety of ship structures, designers often use standard calculations, finite element checks, tank model tests, structural component loading tests and other methods to design the hull structure to ensure that the strength of the ship meets the load under the actual wind and wave environment. There are also a few scholars who install strain sensors in actual ship structures to study structural stress changes during actual navigation. [0003] However, the actual sailing wave environment is very random. Designers cannot accurately assess the structural forces under different sea conditions. For safety reasons, the design is conservative, the safety redundanc...

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Problems solved by technology

[0003] However, the actual sea wave environment has strong randomness, and designers cannot accurately evaluate the structural force under different sea conditions. For safety reasons, the design is conservative, with high safety margins and large hull weight. Cause certain economic losses to shipowners

In addition, ships are gradually becoming large-scale and specialized, and the hull structure is becoming more and more complex. Conventional methods cannot analyze its force well.

At present, the stress monitoring carried out by a few scholars is almost all experimental in nature. There are few monitoring sites and short monitoring time. It is impossible to evaluate the structural strength in real time, and it is also unable to provide the crew with early warning information on the safety of the hull structure.

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