Immersion optical fiber fluorescence phytoplankton measuring system

Abstract

The invention discloses an immersion optical fiber fluorescence phytoplankton measuring system. The system comprises an excitation unit, a fluorescence receiving unit and a data acquisition and control unit, wherein the excitation unit comprises a laser (1) and a conduction optical fiber (3); the fluorescence receiving unit comprises an underwater immersion module (4), a detection optical fiber (2), an optical filter (10) and a photoelectric conversion module (6); the data acquisition and control unit comprises a computer (9), a data acquisition module (8) and a gating signal module (7); and the whole system is divided into an underwater part and an overwater part. The immersion optical fiber fluorescence phytoplankton measuring system has an impact structure, a small volume, high sensitivity and strong anti-electromagnetic interference capacity, is convenient to maintain, can complete on-line measurement of phytoplankton in a water body at different depths so as to realize stereo measurement of the content of the phytoplankton, and can be widely applied to rapid and real-time monitoring of the concentration of the phytoplankton.

Description

Technical field: [0001] The patent of the present invention relates to detection equipment, specifically an online measurement device for phytoplankton. technical background: [0002] With the rapid development of the national economy, the water quality of my country's marine environment has also been seriously damaged, and the eutrophication of the water body has increased year by year, which has brought harm to the ecological environment and people's health, and seriously affected the sustainable development and utilization of marine resources. The content of phytoplankton is an important factor affecting water quality. Therefore, monitoring the changes in the concentration of microalgae, especially phytoplankton algae, in marine water is essential to grasp the formation mechanism of the increasingly serious "red tide" and "algae bloom". It is of great significance to grasp the water quality dynamics of marine water bodies and provide effective forecast / warning information...

AI Technical Summary

Problems solved by technology

Compared with developed countries, my country's deep-sea marine environment detection and sensing technology is generally backward, lacking sensing and analysis instruments with independent intellectual property rights with reasonable prices and comprehensive and accurate analyzable parameters. Detection of sea water environment

[0003] At present, the classification and detection of phytoplankton concentration can only be performed in the laboratory using high-performance liquid chromatography (HPLC) or microscopic counting method. Sample sampling is required, and then laboratory analysis is required. The steps are cumbersome, high cost, and difficult to meet Meet the real-time and rapid requirements of modern environmental monitoring

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