Remote sensing detection device with multi-wavelength time division excitation for fluorescent substances in water and detection method of remote sensing detection device

Abstract

The present invention proposes a remote sensing detection device for multi-wavelength time-sharing excitation of fluorescent substances in water, including a data processing system, the data processing system is connected with a laser controller, and the laser controller is also connected with a multi-wavelength laser emission system, the multi-wavelength The laser emitting system emits lasers of different wavelengths to targets on the sea surface, and the fluorescent substances in the seawater are stimulated to radiate fluorescence. The remote sensing detection device also includes a telescope for receiving fluorescence, and is used to disperse the optical signal transmitted by the telescope into wavelengths. A light splitting system of optical signals arranged in sequence, and an ICCD camera for collecting the light signals formed by the light splitting system, the ICCD camera is connected with the data processing system. The above-mentioned remote sensing detection device combined with the time-sharing excitation detection method can make full use of the analysis capabilities of discrete and fusion fluorescence spectra under different wavelength excitation light sources, effectively increasing the qualitative and quantitative analysis capabilities, making it especially suitable for the rapid measurement of the composition and content of fluorescent substances in water .

Description

technical field [0001] The invention relates to the field of marine environment monitoring, in particular to a remote sensing detection device and detection method for multi-wavelength time-division excitation of fluorescent substances in water. Background technique [0002] Oil spills during oil extraction and transportation will cause water pollution, and the same increase in domestic and working wastewater discharged into oceans, rivers, and lakes will also lead to increasingly serious water pollution. Therefore, the current aquatic environment is affected. serious threat. [0003] Oil spills, chlorophyll, colored soluble organic matter (CDOM), phycoerythrin and other organic substances in water are sensitive to optics, and can be identified and quantitatively analyzed by laser-induced fluorescence (LIF) active detection technology. LIF remote sensing detection technology combines fluorescence spectroscopy technology and active radar detection technology. By actively emi...

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Problems solved by technology

Among them, laser fluorescence radar generally uses high-power large lasers, such as 355nm Nd:YAG lasers, 308nm XeCl excimer lasers, 337nm N 2 Molecular lasers, etc., make the system equipment complex and expensive

The cost of in-situ LIF detection equipment using semiconductor lasers as excitation light source is relatively low, the device is small in size and compact in structure, and can realize the portable detection of fluorescent substances in water. Sometimes it is necessary to sample and measure samples on site, and the measurement spe

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