Design And Research Of Water Quality Monitoring Platform Based On FPGA

Water quality is closely related to people's production and life.As a direct source of water quality information,parameter monitoring has always been one of the leading directions of water quality research.This paper designs a comprehensive monitoring platform for water quality on the basis of traditional instrumentsmonitoring.In combination with the water quality prediction algorithm,the water quality parameters are displayed and acquired in a comprehensive manner using the local server,Web,mobile client.The main research contents of this paper are:According to the needs of platform requirementsto select the analytical instruments,confirm the water program,improve water quality pretreatment measures,complete platform hardware circuit design,use FPGA to modularize the Modbus bus protocol,complete the data transmission between hardware,and the function of simulation debugging.According to people's demand for water quality prediction,design water quality prediction algorithm.Using BP neural network to predict the recovery time of the polluted water.Take the water treatment method of the sewage treatment plant as an example,obtain the water quality parameters and establish the algorithm model,the test data verify that the correlation coefficient between the predicted value and the measured value is 0.9672.A support Vector Regression algorithm was used to establish an algorithm model for short-term water quality prediction and use the genetic algorithm to optimize the model.The results showed that after optimization,the model predicts the fitting effect is good,and the correlation coefficient reaches 0.9988.Using TCP/IP protocol to develop the GPRS module server,building a local server to complete the wireless data reception.Establish local,cloud,mobile three-level database,improve data storage capabilities,data retention under abnormal circumstances,use ODBC,JDBC mechanisms to complete the database connection.Under the framework of ASP.Net,build a WebForm-based water quality monitoring website.Using MVC framework to design mobile terminal,complete the development of MPAndroidChart chart library under Android platform,using multithreading mechanism,List View adapter,Activity life cycle characteristics,related group controls,and database interaction technology to complete user login registration,site selection,parameter display,alert value setting,water quality curve trend chart and other functional modules.The water quality monitoring platform designed according to the plan has been tested to achieve the desired results,the web pages and mobile data communication is correct,it has a certain application prospect,which can provide certain theoretical support for the water quality monitoring system.