Research On Greenhouse Water And Fertilizer Control System Based On Internet Of Things

The development of socialism with Chinese characteristics has entered a new era,and China’s economy is gradually shifting to a stage of high-quality development.Green and sustainable development is the trend of The Times.Taking greenhouse as an example,there are still problems such as waste of water resources and abuse of fertilizer and drugs in the process of agricultural irrigation and fertilization in China,which have brought increasingly obvious negative effects on the environment and life.This situation has brought certain restrictions to the sustainable development of ecological agriculture,and it is also a big barrier to resource conservation and environmental protection.In order to improve the current situation of greenhouse water and fertilizer irrigation,this paper designed a set of water and fertilizer control system with STM32 series single chip microcomputer as the core controller,combined with the Internet of Things technology and fuzzy control algorithm,to make intelligent decisions on water and fertilizer irrigation,to achieve the purpose of saving water,fertilizer,energy and effort.Firstly,a STM32-based environment information acquisition and wireless transmission system for lower computer is designed.The LOLA and NB-IOT modules are combined to realize data uploading and control command issuing.Secondly,Lab VIEW PC greenhouse cucumber in control software is developed to build fuzzy control model,the irrigation water is given by calling Matlab fuzzy control strategy,water realized based on fuzzy decision irrigation parameters,such as temperature and humidity,illumination time,according to the liquid fertilizer EC(Electrical Conductivity)fuzzy control fertilizer concentration and ph value,set up in order to meet user needs.Finally,the remote monitoring cloud platform is built to store the data into the cloud database and perform functions such as visual operation of the data and historical data query.This system tries to make full use of the existing knowledge,experience and scientific calculation to comprehensively analyze the environmental factors in the greenhouse,and realize the intelligent control of the greenhouse water and fertilizer equipment by combining the Internet of Things technology and fuzzy control technology.