Monitoring System Of Greenhouse Environmental Parameters Based On UCOSⅡ

At present,the level of intellectualization and informatization of agricultural facilities in China is still at a relatively elementary level.The development of remote monitoring system for greenhouse by using Internet of Things technology and intelligent monitoring technology is of great significance for improving the level of agricultural informatization management and improving the quality of agricultural products.Based on the requirement of environmental monitoring in Tianjin local grape planting agricultural greenhouse,the greenhouse environmental monitoring system of agricultural greenhouse is designed based on Internet of Things technology and embedded system technology.The environmental parameters such as temperature,humidity,illumination intensity and carbon dioxide content in agricultural greenhouse such as grape planting are monitored,and the data are transmitted to cloud server through wireless network.Real-time data acquisition and monitoring.The main work of this paper includes:1.Based on Internet of Things technology and embedded system technology,the structure of greenhouse environmental parameters acquisition system is designed.The acquisition methods of temperature,humidity,light intensity,carbon dioxide content and other environmental parameters are analyzed,and the structure and function of the system are determined.2.The circuit design based on STM32 microcontroller is completed,including schematic design and PCB design.The circuit design of temperature acquisition,humidity acquisition,carbon dioxide concentration acquisition,light intensity acquisition and DTU transmission are designed.3.Based on uCOSⅡ system,the system software is designed,which includes software task temperature acquisition,humidity parameter acquisition,carbon dioxide concentration acquisition,light intensity acquisition,DTU data transmission and other functions.The software task scheduling and synchronization are realized by using mutex.Finally,the transplantation of uCOSⅡ operating system is completed,and the whole system function is realized.4.The greenhouse environment parameter acquisition system including three groups of more than ten acquisition nodes were made and completed.The installation and layout of the greenhouse environment parameter acquisition system was verified in Tianjin Binhai Chadian Grape Science and Technology Park.Experiments show that the acquisition system works stably and reliably,and achieves the design goal.