Method and device for detecting water transparency

Abstract

The invention discloses a method and device for detecting water transparency. The method comprises the following steps: S1, detecting visible light wave band absorbance of water through a full spectrum analyzer; S2, according to the Beer-Lambert Law, establishing a model of a relationship between the visible light wave band absorbance and the water transparency by taking the visible light wave band absorbance as an independent variable, taking water transparency as a dependent variable, and combining a partial least square method and an artificial neural network algorithm; S3, according to themodel, calculating to obtain the water transparency. According to the technical scheme disclosed by the invention, the model of the relationship between the visible light wave band absorbance and thewater transparency is established by combining the partial least square method and the artificial neural network algorithm according to the Beer-Lambert Law, so that the influence caused by subjective consciousness of an observer is eliminated; the influence caused by ambient light source energy, such as cloudy and rainy weather and sunning morning and afternoon is eliminated by adopting standardlight source control and energy receiving.

Description

technical field [0001] The invention relates to the technical field of water quality detection, in particular to a method and device for detecting water quality transparency. Background technique [0002] Water quality transparency refers to the degree to which water can transmit light, indicating the clarity of water, and is one of the water quality evaluation indicators. At present, the methods for water quality transparency detection are transparency meters or compass methods. The problems of this water quality transparency detection method include: firstly, it is greatly affected by subjective factors such as the eyesight of the observers, color recognition; secondly, the water body needs to be extracted It takes time and effort to come up; thirdly, it is affected by objective factors such as external light intensity, cloudy and sunny days, and temperature changes; finally, it cannot reflect changes in water transparency in real time. [0003] In view of this, it is nec...

AI Technical Summary

Problems solved by technology

At present, the methods for water quality transparency detection are transparency meters or compass methods. The problems of this water quality transparency detection method include: first, it is greatly affected by subjective factors such as the observer's vision and color recognition; second, the water body needs to be extracted It is time-consuming and labor-intensive to come up; again, it is affected by objective factors such as external light intensity, cloudy and sunny days, and temperature changes; finally, it cannot reflect changes in water transparency in real time

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