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Method and device for field rapid detection on content of nitrogen and phosphorus substances in eutrophic water

A technology of eutrophication and substance content, applied in measurement devices, color/spectral property measurement, material analysis by optical means, etc. The effect of increasing universality

Inactive Publication Date: 2014-03-26
SHANGHAI OCEAN UNIV
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Problems solved by technology

The difficulty lies in the interference of other pollutants in the water body, such as the interference of the optical effects of inorganic suspended substances and organic dissolved substances (yellow substances), as well as regional and even seasonal differences in the characteristics of algae and other pollutants.

Method used

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  • Method and device for field rapid detection on content of nitrogen and phosphorus substances in eutrophic water
  • Method and device for field rapid detection on content of nitrogen and phosphorus substances in eutrophic water
  • Method and device for field rapid detection on content of nitrogen and phosphorus substances in eutrophic water

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Embodiment Construction

[0010] The present invention will be further described below in conjunction with accompanying drawings and examples.

[0011] The rapid detection device for the content of nitrogen and phosphorus substances in the water body is composed of a display module, a storage module, a signal source and a silicon detector module. The IO ports P0.10-P0.17 of the microprocessor are used as the 8-bit data lines of the LCD screen, and P1.20, P1.21, P1.22, and P1.23 are used as the control signal lines of the LCD screen; P0.5, P0.6 and P0.7 are used as three-way input signal terminals, connected to the silicon detector module, TX1 and RX1 are used to communicate with the wireless transmission module; P0.2 and P0.3 are used to communicate with the storage module Clock and serial data connections.

[0012] First, image features are extracted. The three-dimensional image obtained by the silicon detector must be planarized. The model uses a uniform linear stroke scanning algorithm combined w...

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Abstract

The invention relates to a real-time, convenient and reliable method for field rapid detection on the content of nitrogen and phosphorus substances in eutrophic water, and a low-cost field detection device mounted in an ocean wireless measurement and control network or an aquaculture Internet of Things. A simulation study on spectral inversion of the content of nitrogen and phosphorus substances in water is carried out, and the effect of spectral signals on chromatic aberration is fused effectively. On the basis, a relatively complete sample set of spectral characteristic information of eutrophication characterization parameters, such as soluble organic matters, chemical oxygen demand, total nitrogen and total phosphorus, is established as a reference image library; the reference image library contains prominent features, such as gray levels, image borders, outlines, surfaces and spectral lines. Finally, obtained images (including spectral information images) are compared with the reference image library and analyzed, sequentially, chromatic aberration of water eutrophication can be inversed and simulated, and the total content of nitrogen and phosphorus substances can be deduced.

Description

technical field [0001] The invention relates to a real-time, convenient and reliable on-site rapid detection method of nitrogen and phosphorus content in eutrophic water bodies and a low-cost on-site detection device, which are installed in marine wireless measurement and control networks or aquatic products networking. Background technique [0002] Routine water quality eutrophication monitoring is to determine the concentration of chlorophyll by collecting water samples, filtering, extracting and spectrophotometer analysis. Therefore, the monitoring of water environment in a large area is a labor-intensive and time-consuming task, and it is impossible to conduct a comprehensive investigation of the distribution of algae in large lakes by sampling methods. [0003] As a means of regional water environment investigation and monitoring, remote sensing technology has been paid more and more attention. Some countries in North America and Europe have already carried out studies ...

Claims

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Application Information

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IPC IPC(8): G01N21/00G01N21/25
Inventor 池涛陈明冯国富张松闫桢
Owner SHANGHAI OCEAN UNIV
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