Signal processing circuit and method based on automatic river water quality monitoring system

Abstract

The invention relates to the field of automatic water quality monitoring systems, and discloses a signal processing circuit and method based on an automatic river water quality monitoring system. Thesignal processing circuit comprises a water quality detection unit, a signal conditioning unit, a transfer control unit, a wireless transmission unit, a signal caching unit, and a control unit, wherein the signal conditioning unit comprises an I / V conversion module, a signal amplification module and a filtering output module. A plurality of sub-detection nodes are arranged on a river, each sub-detection node is provided with a water quality index sensor and a flow sensor, detection signals are subjected to signal conversion in the signal processing module, primary amplification and secondary amplification of the signals are conducted through the signal amplification module, and meanwhile signal buffering and isolation are conducted through the follower, and the bearing capability is improved; and finally, clutters in the signals can be eliminated through the filtering output module, so that the stability and the accuracy of the detection signals can be effectively improved.

Description

technical field [0001] The invention relates to the field of automatic water quality monitoring systems, and discloses a signal processing circuit and processing method based on the automatic monitoring system of river water quality. Background technique [0002] Water is the source of life, and the survival and development of human beings cannot do without water at all times. The total amount of surface water resources in my country ranks sixth in the world, but due to the huge population of our country, the per capita water resources only reach the world average level; in addition, the distribution of water resources in my country is seriously uneven, and the total discharge of domestic sewage and industrial wastewater is huge. Environmental problems have plagued the national environmental protection department for a long time. [0003] The water environment refers to the water environment of lakes, rivers, oceans, etc. Changes in the water environment will have a serious ...

AI Technical Summary

Problems solved by technology

[0005] The automatic water quality monitoring system in the prior art, when performing river water quality detection, will generate noise due to the difference in weather conditions and water flow velocity, thereby increasing interference to the transmission of water quality detection signals and reducing detection accuracy. When the detection signal is transmitted, due to the difference in the frequency of the transmission signal, the transmission signal will interfere, resulting in a decrease in the transmission rate

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