Method for detecting content of oxygen in seawater for aquaculture

A mariculture and detection method technology, applied in the direction of testing water, material inspection products, etc., can solve the problems of soft measurement of oxygen content in seawater aquaculture water, short service life of detection instruments, strong corrosion of sensor probes, etc., and achieve operability High performance and practicability, simple structure and low cost

Inactive Publication Date: 2014-12-17
GUANGDONG OCEAN UNIVERSITY
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Problems solved by technology

Most of the existing detection methods for the oxygen content of mariculture water quality rely on instrument detection methods. The detection instruments are basically imported, which is not only expensive and costly, but also due t

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  • Method for detecting content of oxygen in seawater for aquaculture
  • Method for detecting content of oxygen in seawater for aquaculture
  • Method for detecting content of oxygen in seawater for aquaculture

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Embodiment 1

[0032] The principle diagram of a method for detecting the oxygen content of seawater aquaculture water quality according to the embodiment of the present invention is as follows figure 1 As shown, first a large amount of sample data is collected through data collection and stored in the sample database. Each set of sample data contains characteristic variables of the oxygen content of mariculture water (influent flow, ammonia nitrogen content, aeration rate, suspended solids, temperature) and oxygen content, at least 100 groups, the sample data is too small to reflect the correlation between each characteristic variable and oxygen content; in order to quantify the degree of influence of each characteristic variable on oxygen content, that is, the weight value, the genetic The algorithm is optimized offline and the weights of each characteristic variable are obtained, which are stored in the weight database after optimization; when real-time oxygen content data is needed to de...

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Abstract

The invention discloses a method for detecting content of oxygen in seawater for aquaculture, belonging to the technical field of detection of aquaculture water quality. The method is characterized in that the method for detecting the content of oxygen is an indirect measurement method which comprises the following steps: selecting characteristic variables which have the greatest influence on the content of oxygen in the seawater for aquaculture and are nearly not correlated; carrying out offline optimization on the weight of each characteristic variable by virtue of a genetic algorithm according to sample data (containing the characteristic variables and oxygen content) in a sample database by taking a mean absolute percentage error as an objective function, and storing the optimized weights into a weight database; and when water quality parameters need to be detected and controlled by virtue of the oxygen content data, multiplying the characteristic variables detected in real time by the respective weights and then summing so as to obtain the oxygen content. According to the method disclosed by the invention, the problems that an existing instrument for detecting the content of oxygen in the seawater for aquaculture is basically imported, is high in price, and is short in service life because of serious corrosivity of seawater to the probe of a sensor are scientifically and effectively solved; and the method disclosed by the invention is high in operability and practicability.

Description

technical field [0001] The invention relates to a method for detecting the oxygen content of seawater aquaculture water, in particular to a method for detecting the oxygen content of water quality by using soft sensing technology, and belongs to the technical field of aquaculture water quality detection. Background technique [0002] Over the past 30 years, aquaculture has become one of the fastest growing sources of food production globally and has made an important contribution to the development of national economies, global food supply and food security. With the continuous increase of fishing intensity in the world's oceans, marine aquatic resources are gradually declining. Therefore, all countries are actively developing the mariculture industry, especially developing countries, which account for a very high proportion of the world's mariculture production. [0003] my country is a big country in marine aquaculture. The aquaculture production has increased from more t...

Claims

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Application Information

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IPC IPC(8): G01N33/18
Inventor 徐今强唐丽平
Owner GUANGDONG OCEAN UNIVERSITY
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