Research And Development Of Greenhouse Environment Monitoring System Based On Internet Of Things

At present,smart agriculture is placed at an important position in development by agricultural country in the world.With the development of modern agriculture,smart agriculture has become more and more strict in informationization,and smart greenhouses have become the basic environment for developing smart agriculture.Agricultural greenhouse planting technology is of great significance to modern agricultural production.The main factor affecting crop production is the change of meteorological environment.The light intensity,soil temperature and humidity,air temperature and humidity in the shed are three important influencing factors.It is necessary to monitor the meteorological environment on-line in agricultural greenhouses and adjust the facilities in the shed according to the changes of environmental factors to achieve the most suitable environment for crop growth.This paper designs an environmental monitoring system for greenhouses based on the Internet of Things in order to solve the problem of real-time collection and monitoring of meteorological environment data in agricultural greenhouses,then the users can adjust agricultural greenhouse facilities Timely and accurately.In the design,the terminal acquisition equipment uses the CC2530 RF module as the core chip,An agricultural greenhouse meteorological observation station online in the area is established by installing sensors such as light,air temperature and humidity,soil moisture,etc.short-range wireless communication is completed based on the Z-Stack protocol stack,and a data structure specification that conforms to the meteorological environment data transmission in the agricultural greenhouse is set up.The data is pushed and pulled by the collected data based on the MQTT(Message Queuing Telemetry Transport)protocol which works on the TCP/IP protocol.This is a publish/subscribe message protocol designed for remote devices with poor hardware performance and poor network conditions.A publish/subscribe messaging protocol designed.The system focuses on system usability,low cost,stability and low power consumption in hardware and software design anddevelopment.The results of operation show that the agrometeorological environment monitoring system has advanced technology,flexible design,low cost,simple layout and high cost performance.It can effectively complete the real-time monitoring of meteorological data in agricultural greenhouses.Users can observe the changes in meteorological data through the webpage and process the greenhouse facilities accordingly.The practicability in different scenarios is considered during the exploitation of the system and this system can provide the meteorological environment monitoring basis for other agricultural systems.