Water quality data preprocessing circuit

Abstract

The invention relates to a water quality data preprocessing circuit. A high input impedance differential amplifier circuit receives water quality data detected by a water quality detection sensor andpreset reference water quality data; the detected water quality data and the preset reference water quality data are output to a differential amplifier after being respectively amplified by a high input impedance frequency selective amplifier and followed by a high input impedance circuit; water quality deviation data is calculated; then the water quality deviation data is output to a voltage stabilization circuit through emitter following; after emitter following, a signal amplitude is also fed back to a base of a triode Q2 and a base of a triode Q1 level by level so as to regulate an amplitude of the water quality deviation data and reduce a gain error caused by amplification; the voltage stabilization circuit outputs a determined voltage to a division operation circuit after voltage stabilization of a feedback voltage regulation circuit; the determined voltage and the delayed reference water quality data are subjected to a division operation; and an obtained water quality index is transmitted to a water quality monitoring server to carry out monitoring and early warning so as to carry out preprocessing and solve problems that the received data is real-time water quality data, the task load is high and efficiency is low.

Description

technical field [0001] The invention relates to the technical field of water quality monitoring, in particular to a water quality data preprocessing circuit. Background technique [0002] The water supply status is directly related to people's living standards and physical health. The sanitation of urban water supply has become a common concern. To ensure the quality of water supply, an effective monitoring and management system must be equipped, usually from water plants, municipal pipe networks, secondary There are three levels of secondary water supply and user terminals. Water quality sampling and monitoring points are arranged according to the water flow path of the main pipe, and water quality parameters (turbidity, PH, ammonia nitrogen, dissolved oxygen, permanganate, etc.) are sampled through water quality detectors or corresponding sensors. , transmitted to the water quality monitoring server through the network, the water quality monitoring server analyzes and eval...

AI Technical Summary

Problems solved by technology

[0005] In view of the above situation, in order to overcome the defects of the prior art, the purpose of the present invention is to provide a water quality data preprocessing circuit, which has the characteristics of ingenious design and humanized design, and calculates the water quality index pretreatment through the water quality data, effectively solving the problem of water quality. The monitoring server has a large amount of tasks and low efficiency

Images