Intelligent rainfall ph-q real-time monitoring device and working method thereof

Abstract

An intelligent rainfall pH-Q real-time monitoring device, including a water receiving cylinder, a water collection tank, containers A, B, and C, a standard liquid storage tank, and an intelligent control module. A pH electrode is arranged in the container, and a pressure sensor and a temperature sensor are arranged on the side wall of the container. The working method is as follows: when the solution reaches the height of the pressure sensor, the response signal of the pressure sensor is sent to the feedback adjustment module, and the feedback system regulates the corresponding valve. The data signals generated by the pH electrode and the temperature sensor are sent to the temperature correction module, and the automatic temperature compensator corrects the electrode potential. The corrected results are sent to the data calculation module to calculate the real-time pH value. Finally, select the parameter group that needs to be exported according to the selected output module, and obtain the relationship between pH and rainfall time t, rainfall flow Qt, and flow Qt with time t. The invention can realize the continuous on-line monitoring of the rainfall pH, can correct the influence on the pH caused by the electrode aging, the fluctuation of inflow and outflow water and the temperature change, and realize the real-time and accurate measurement of the pH and flow rate of the rainwater.

Description

technical field [0001] The invention is a simple and effective real-time continuous monitoring device for pH and flow of rainfall, which can reflect the change process of pH and flow of rainwater in real time, and belongs to the technical field of rainfall pH monitoring environment. Background technique [0002] Since the 1980s, my country's rainfall automatic samplers and monitors have developed to a certain extent, and many domestically produced samplers and monitors have come out. At present, domestic monitoring stations and university laboratories monitor the pH of rainwater according to the "Collection and Preservation of Atmospheric Precipitation Samples" (GB13580.2-92). This method mainly combines the whole process samples of rainfall (from the beginning to the end of precipitation) into one sample, and then measures its pH to obtain the average value of precipitation pH. However, the composition of rainwater in the early and middle stages of rainfall is different, a...

AI Technical Summary

Problems solved by technology

However, the composition of rainwater in the early and middle stages of rainfall is different, and there is a dilution effect during the mixing process of rainwater, so the pH of rainwater is actually a curve that fluctuates with time, and the average pH value of the mixed sample cannot reflect the real-time change process of precipitation pH

[0003] In addition, when measuring the pH of rainwater in a single container, due to the need to maintain the continuity of rainfall, the device needs to be in a state of continuous water inflow and outflow, and fluctuations in inflow and outflow of water may lead to inaccurate pH measurements; electrode aging also has a certain impact on electrode potential; changes in temperature It will also have a certain impact on the determination of the electrode; the material of the sampling bucket will also have a great impact on the result due to the long soaking time of the collected rainwater

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