Method and device for measuring sediment content suspending in water

Abstract

The aim of the invention is to provide a method for measuring the content of the suspending mud in the water body and the measuring device thereof, the method for measuring the content of the suspending mud in the water body comprises the following steps: 1) transmitting infrared light into the suspending mud water body with infrared light emitting diode as excitation light source, and arranging a plurality of silicon photocells at the front and side of the infrared light emitting diode for respectively receiving the light signal scattered by the suspending mud; 2) adopting a front-end amplifying circuit for executing signal amplifying to the light signal; 3) converting the analogue signal to digital signal with the AD collecting circuit; 4) outputting the testing data by the control part of the single-chip. In the invention by receiving the scattered signal through a plurality of silicon photocells from different positions the concentration detecting range of the suspending mud is increased; the floating alga, the colored matter and the like transparent or semitransparent suspending substance and mud with bigger grain diameter hardly affect the measurement result.

Description

Technical field: [0001] The invention relates to a measurement method and a measurement device for suspended sediment content in various water environments, especially in seawater. Background technique: [0002] The determination of suspended sediment content is one of the important indicators in water quality monitoring. The measurement and estimation of suspended sediment concentration is the study of sediment discharge into the sea and the dynamics of marine sedimentation. It is related to the sedimentation or change of channel ports, the shaping of estuary beaches, and the development of nearshore aquaculture. my country's coastal and offshore waters are characterized by high suspended sand, and their measurement methods include traditional weighing and specific gravity methods. They all have the disadvantages of poor sampling representativeness, troublesome sampling and low efficiency, and cannot be monitored in real time and continuously. Existing suspended sediment m...

AI Technical Summary

Problems solved by technology

These methods have their own advantages and disadvantages, but they all have defects such as small detection concentration range and large detection error of high-concentration suspended sediment, and are easily affected by other suspended substances such as planktonic algae and colored matter, and uneven suspended sediment. Particle size will also bring a large error to the measurement results

Most of the current suspended sediment detection instruments are for point measurement, and there is a large deviation between the measurement data and the actual sediment concentration in the entire measurement water area

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