Research And Design Of Water Quality Monitoring System Based On Internet Of Things

With the development of Internet of Things application technology,intelligent Internet of Things has become one of the important research directions of 14th Five-Year Plan in China,it provides technical guarantee for the new basic construction of our country.Water pollution is a long-term livelihood problem,and water treatment and water resource protection are also basic state policies in China.In order to manage regional water sources and ensure water quality,a series of targeted regulatory measures have been implemented for sustainable development of water sources.But new infrastructure-related water monitoring equipment is lagging behind,therefore,based on traditional water quality monitoring and management methods,this thesis adopts narrowband communication technology with Internet of Things application technology as the core,integrated embedded application technology and modular classification sensor interconnection technology,designs a complete set of remote water quality monitoring system of Internet of things,which has high engineering application value.In view of the current management status of water quality monitoring system is not sound and the application demand of classification,in this thesis,Internet of Things terminal equipment and Internet of Things management platform as a combination of the water quality monitoring system application technology,carrier structure,hardware platform,terminal software and management platform software for a complete engineering research and design.In this thesis,the overall hardware composition of water quality monitoring system is summarized,and the modular function design of its framework structure is carried out.This thesis has completed the design of the minimum logic system circuit of the master chip based on STM32,the circuit of the terminal power supply system,the geolocation circuit based on GPS,the data acquisition circuit of temperature sensing,PH sensing,TDS sensing and turbidity sensing,and the schematic diagram of the narrowband communication network module.In the system software design part,this thesis carries on the modular design to the system embedded software according to the total score order,focuses on the study of the main control module,communication module,sensing module and positioning module software flow,defines the data communication protocol,determines the data transmission mode,at the same time,this thesis carried out the functional design and interface design of the platform monitoring software,redefined the database and functional attributes of the water quality monitoring system platform,completed the data processing task of water quality monitoring information,and improved the overall engineering design scheme of the water quality monitoring system.Finally,through the functional test and data analysis of water quality monitoring system terminals and monitoring platforms,it is proved that the design scheme in this thesis can meet the requirements of regional water quality monitoring,the water quality monitoring data results can be displayed by monitoring software,which verifies the correctness of the water quality monitoring system designed in this thesis,further expands the application scope of the Internet of things,and also provides engineering practice value for water quality monitoring and management.