Greenhouse Monitoring System Based On STM32 Microcontroller Development

With the development of agricultural modernization,greenhouses are more and more important of the position in agricultural production.In order to meet the growing conditions of crops better,improve crop yield,improve the quality of agricultural products,environmental parameters inside the greenhouse to strict control,greenhouse environment monitoring system arises at the historic moment.Domestic greenhouse monitoring system function is relatively single at present,the stability and adaptability is poor.Through analysis of the greenhouse environment factor in this article and study of control strategy,proposed the system design scheme,acquisition and integration environment factors control equipment,the principle of modular design,the real-time monitoring of environmental factors in the greenhouses,and according to the monitoring information,opening or closing control equipment,make the crop growth in the good environment is conducive to greenhouses,lay a foundation for improving the economic benefit of agricultural production.Hardware design,uses the STM32F103ZET6 single-chip microcomputer,to improve the stability and adaptability of the system,the CPU,temperature and humidity sensor,CO2 sensor,light sensor parts such as modular design;In order to ensure the output signal of the drive ability,increase ULN2804 driver chip in the output control circuit,ensure the stability of power system operation process,power circuit and the modules using single power supply.Software design,STM32F103ZET6 central processing unit(CPU),various acquisition module and crop growth database programming use the Keilu Vision4 software combined with nine control algorithm.Through the field test,the greenhouse monitoring system for environmental factors in greenhouse monitoring has reached the expected requirement.