Water transparency testing method and testing device thereof

Abstract

The present invention discloses a water transparency testing method and testing device thereof. An image acquisition unit is used to scan, read, identify and verify graphic information by penetrating a water area, an X size critical value of a dynamic graph is accurately identified and recorded, and the X size critical value of the dynamic graph is obtained and then calculated through a neural network prediction model, so that the influence of the water sample on the definition and the integrity of the dynamic graph is evaluated, the whole-process automatic online measurement of the transparency of the water sample is realized, the X size critical value of the dynamic graph can fully reflect the common influence of the water sample on factors such as absorption and scattering of light, and the essential characteristics of a Saikov disc and a lead word method are reserved to the maximum extent; and the dynamic graph can bear information data, and the dynamic graph recognition process can effectively eliminate the influence of random factors and human factors, so that the prediction of the water transparency is direct, steady and reliable.

Description

Technical field[0001]The present invention belongs to the technical field of water quality, and is specifically related to a water quality transparency test method and a test device thereof.Background technique[0002]Water transparency indicators are one of the four parameters of the water quality monitoring and evaluation of black odor, and the test of transparency parameters is still read by artificial visits. One of the judgment methods is the Sel's disc method. This is a transparency in situ test method. By gradually increased the depth of the Sex's disc to be tested into the water body until the naked eye cannot clearly distinguish the black and white disc. The depth of sinking into the water body is evaluated as a water transparency; the second is a lead letter, this method is constantly injected into the water sample to be tested into the transparend meter of the inner diameter of 2.5 cm, high 33 cm, and observes the bottom standard lead word printing from the transparend mete...

AI Technical Summary

Problems solved by technology

[0004] There are some deficiencies in the existing research results and technology implementation. First, the structure of the Sebster disk is simple, and the selection of the contrast threshold of the black and white disk grid image has a strong subjective influence; There is a certain difference in the spectrum, and there are differences in experimental conditions between directly using the test results under artificial light conditions as the evaluation index and on-site test results; third, the transparency is the joint action of multiple physical phenomena such as the absorption of light by the water sample and the scattering of light. As a result, the use of single indirect indicators such as absorbance and transmittance to predict transparency parameters has certain limitations.

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