Design Of High Performance And Multi-channels System Based On STM32 For Water Quality Monitoring

China is rich in water resource,but is poor in the amount per capita.The water quality monitoring system can monitor the health of the water resource efficiently and precisely.It is a powerful and effective tool for the water quality protection.The popular water quality monitoring approaches in China are the automatic or manual monitoring approaches based on the equipments of the sites or the laboratorys.But the high price and the complex operations of them have limited their application.After a deep analysis of the water quality monitoring system and the water quality analysis method at home and abroad,this thesis designs a small water quality monitoring system based on STM32,which can collect many kinds of water quality parameters precisely and parallel.Firstly.According to the current development of the water quality monitoring system,this paper analyzes the design requirements of the water monitoring system,and determines the system design scheme.Secondly.This paper designs the hardware platform based on the principle of the modular design,and realizes the functions of AD conversion,data storage and data transmission,as well as completes the design of the hardware package and the power supply mode.Thirdly.According to the characteristics of the hardware platform and the data transmission methods,a full-featured software system is developed for the hardware platform.And with the help of the Oracle database and the BP Neural Network Tool Package,this paper designs a reliable data storage and analysis method.Finally.Through the laboratory simulation test and the field acquisition of Xishan reservoir in Dalian,this paper improves the data processing and the functions of this system.Experimental results show that this water monitoring system is able to monitor the analog signal and the digital signal of sensors,and completes the functions of the data acquisition,conversion and analysis.Data will be transferred from the hardware platform to the software platform reliably with the help of the serial port and WiFi module.At the same time,the combination of the Oracle database and the BP network improves the reliability and the comprehensive analysis ability of the water quality monitoring system.Overall,this water quality monitoring system achieves the close connection with the existing hardware devices and software applications in the markets,while maintains the characteristics of high performance price ratio,high integration,high reliability and additional deployment flexibility.It meets the demands of the water quality monitoring market and provides a new solution to water quality data collection,analysis and preservation.