Distributed strain collector for long-term safety monitoring of ship structure

Abstract

The invention discloses a distributed strain collector for long-term safety monitoring of a ship structure. The distributed strain collector comprises a circuit board hardware, a shell, a power supply communication socket and a sensor socket, wherein the power supply communication socket and the sensor socket are mounted on two side walls of the shell; the circuit board hardware is fixed at the bottom of the shell; each power supply and each signal wire on the circuit board hardware are connected with the power supply communication socket and the sensor socket through wires; the circuit board hardware consists of a signal modulation and collection module, a microcontroller, a controller area network (CAN) communication module and a power supply management module; the applicable sensor is a resistance strain sensor. A plurality of distributed strain collectors disclosed by the invention are combined with a monitoring host so as to build a large distributed sensor network for long-term safety monitoring of ship structures; each strain collector can be flexibly arranged near the sensor to monitor the strain stress of the ship structure in real time and transmit the measuring data to the monitoring host in real time.

Description

technical field [0001] The invention relates to a device for long-term safety monitoring of ship structures, in particular to a large-scale distributed strain collector oriented to the application of long-term safety monitoring of ship structures. The variable collector is arranged in various measurement positions of the ship in a distributed form to measure the strain and stress of the ship structure in real time, and can also be extended for safety monitoring of large structures such as civil engineering and offshore platforms. Background technique [0002] During the use of ships, they have been subjected to seawater pressure, wave impact and seawater corrosion for a long time, and various structural damages and fatigue damages will occur in the hull structure, resulting in the reduction of the structural strength and fatigue life of the ship's hull and thus the safety of the ship. Limited to research methods and testing techniques, in the past, the safety assessment of s...

AI Technical Summary

Problems solved by technology

At present, the distributed strain collectors put into use in China have large volume, high power consumption, and cannot work at long distances. Each collector has too many channels and cannot be directly arranged near the sensor, resulting in too long wires between the sensor and the collector. , susceptible to interference from external electromagnetic fields, measurement accuracy cannot be guaranteed; in addition, engineering applications are inconvenient to install, and are not suitable for long-term safety monitoring of ship structures

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