Multi-node data synchronous acquisition system and method for real-time monitoring of underwater surface shape deformation

Abstract

The invention relates to the technical field of marine observation and aims to provide a multi-node data synchronous acquisition system and method for real-time monitoring of underwater surface shapedeformation. The system comprises at least four array belts, wherein each array belt is formed by a plurality of strip-shaped rigid substrates connected through movable joints; on each rigid substrate, three sensor units are connected to slave station data acquisition units through cables, and the slave station data acquisition units are connected to a central processing unit through cables; the central processing unit comprises an outer pressure shell as well as an embedded controller and a power supply which are arranged inside, and after acquiring data from MEMS attitude sensors, each slavestation data acquisition unit transmits the data to the embedded controller. Synchronous acquisition of underwater and even seabed multi-node data can be realized, three-dimensional reconstruction ofthe surface shape is realized, and the system and the method can be used for improving the marine observation capability. A clock of a master station is taken as a clock source of the system, time synchronization in the system is realized in a form of I / O timing outputting of a clock synchronization instruction, and the problem about time synchronization of the system is effectively solved.

Description

technical field [0001] The invention relates to the technical field of ocean observation, in particular to a multi-node data synchronous acquisition system and method for real-time monitoring of underwater shape deformation. Background technique [0002] The ocean area accounts for about 75% of the earth's surface area. There are a lot of mineral resources in the ocean. In the process of ocean exploration and development, a lot of technical equipment is required, as well as the construction of ports, laying submarine pipelines, and surveying waterways. In the 21st century, the economic development of all countries in the world cannot do without the vast ocean. In particular, with the rapid development of economy and the continuous expansion of population, the demand for energy is also increasing. People have turned their attention to the ocean, especially the deep sea. The survey, development and utilization of marine resources have become necessary. my country is a large o...

AI Technical Summary

Problems solved by technology

However, the underwater shape deformation monitoring system of this invention cannot guarantee the synchronous collection of data, so the accuracy of the later three-dimensional reconstruction is not very high, and the sensor array adopts a stainless steel rectangular tube and rubber flexible joint structure, which has poor reliability and the joints are easily damaged. , there is a probability of distortion, the MEMS attitude sensor uses a 9-axis attitude sensor, the energy consumption is relatively high, and it is not suitable for long-term underwater deployment

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