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

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 present invention relates to environmental monitoring, and one optical fiber sensing field of marine technology, particularly to a microprocessor-based nano fiber coupler half marine multi-parameter monitoring systems and integration methods. Background technique [0002] Each element of the marine environment variables directly affect the development of the marine economy, marine environmental protection, marine equipment and equipment operating performance and safety and other marine-related activities, the various elements of the marine environment in real-time, efficient, fast, in-situ, large-scale, continuous monitoring, is an arduous and complicated task, but also the development of marine, marine economic strategy must have the ability. Therefore, the development of marine environment monitoring technology, instrumentation and equipment related to the development is the way to build a maritime power, and related work of great significance and far...

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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