Marine multi-parameter integrated monitoring system based on micro-nano optical-fiber half coupler and method

Abstract

The invention relates to the fields of marine environment monitoring and optical-fiber sensing technology, and particularly to a marine multi-parameter integrated monitoring system based on a micro-nano optical-fiber half coupler and a method. The monitoring system includes a tunable wavelength scanning light source, an optical-fiber isolator, a 1x4 tunable optical switch, a CTD sensor, a magnetic-field sensor, a humidity sensor ,a harmful-gas sensor, a photodetector No.1, a photodetector No.2, a photodetector No.3, a photodetector No.4, a collection card and a signal processing computer. Thesystem of the invention has the advantages of a simple structure, low costs, high sensitivity, multi-parameter integrated sensing, high integration, convenient deployment, high data compatibility andthe like, and effectively satisfies multi-parameter integrated monitoring and information processing application demand of marine environments. The system is an optical-fiber sensing system, can be convenient for integration with an existing optical-fiber hydrophone system, and then provides a real-time in-situ high-precision marine dynamic environment guarantee.

Description

technical field [0001] The invention relates to the technical field of marine environment monitoring and optical fiber sensing, in particular to a marine multi-parameter integrated monitoring system and method based on a micro-nano optical fiber half-coupler. Background technique [0002] The parameters of various elements of the marine environment directly affect marine-related activities such as marine economic development, marine environmental protection, marine equipment and equipment operation efficiency and safety, and real-time, efficient, rapid, in-situ, large-scale, and continuous monitoring of various marine environmental elements is an important It is a arduous and complicated task, and it is also a necessary ability to develop and manage the ocean. Therefore, the development of marine environmental monitoring technology and the development of related equipment and instruments are the only way to build a marine power. The related work is of great significance and ...

AI Technical Summary

Problems solved by technology

[0009] The technical problem to be solved by the present invention is: to design a marine multi-parameter integrated monitoring system based on micro-nano optical fiber half-coupler, the system uses tunable optical switch to realize multi-sensing probe space division multiplexing cascading and sensing demodulation switch, and perform light detection and scanning on each sensor probe through a high-precision tunable light source, and then realize multi-parameter integrated signal demodulation processing by tracking the change of characteristic wavelength. The probe realizes multi-parameter sensing functions such as seawater temperature, salinity, depth, atmospheric humidity, magnetic field strength, and harmful gases

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