Runoff sediment combination sensor, sediment content measuring device and method

Abstract

The invention discloses a runoff sediment combination sensor, a sediment content measuring device and a sediment content measuring method, and relates to the technical field of concentration measurement. The measuring device comprises the runoff sediment combination sensor and an upper computer, wherein the upper computer is connected with a power supply signal interface of the runoff sediment combination sensor, and is used for sending a control signal to a micro-processing unit to control a near-infrared tube emission array group to start emitting or stop emitting near-infrared light, receive a digital signal and calculate the sediment content according to the digital signal. In the runoff sediment combination sensor, sediment solution to be measured is transmitted by the near-infrared light emitted by the near-infrared tube emission array group, and the sediment content is calculated according to the degree of attenuation of infrared light received by a near-infrared tube receiving array group, so the accuracy of measuring the sediment content is improved; and the sediment content of different measuring ranges is calculated by matching the runoff sediment combination sensor with the upper computer and selecting different sensor signals, so the range of measuring the sediment content by a near-infrared method is enlarged.

Description

technical field [0001] The invention relates to the technical field of concentration measurement, in particular to a runoff sediment combined sensor and a sediment content measuring device. Background technique [0002] The methods for measuring sediment content in the prior art are mainly divided into the following three types: [0003] 1. Drying method. The drying method is a widely used method for determining the sediment content. The equipment is simple, the method is easy to implement, and the accuracy is high. It is often used as the standard for evaluating other methods. However, the drying measurement cycle is long and labor-intensive, so it is not suitable for frequent and large-scale measurements. In addition, when the general experiment is completed in the field, the alcohol burning method is used. This method has certain requirements for the purity of the alcohol, so it is prone to certain errors. The general procedure is: take a certain volume of sand-contain...

AI Technical Summary

Problems solved by technology

However, when the ultrasonic intensity is high, when it passes through the suspended matter solution, the ultrasonic wave will interact with the sediment particles to produce a "cavitation phenomenon" that will affect the sediment content, and will also cause larger sediment particles to be crushed and Change the particle size composition of the original suspended particles

At this time, using the pre-calibrated formula to calculate the sediment concentration will produce errors

Images