The Vegetable Greenhouses Monitoring And Control System Based On Environmental Parameters

Food is important to our life.The development of agriculture has been the basis of social development and progress.The use of modern sensor technology can make people more effectively to adjust and control the environment in the greenhouses, so as to improve crop yields, efficient use of resources, shortencrop growth cycle purpose for existing agricultural shed design with a certain degree of versatility, practicality, low cost of vegetable greenhouses monitoring system based on environmental parameters is necessary. The paper designed an effective monitoring system based on vegetable greenhousesambient temperature, soil moisture, carbon dioxide concentration and light intensity four parameters. Therefore, the subject has a certain practical significance.System of greenhouses plant growth uses sensor technology, communications technology and microcontroller technology to complete a multi-point environmental parameters detection and control,divided from the functions that can be divided into three modules:the front-end data acquisition module and data transmission module and control centermodules. The front data acquisition module is mainly responsible for the collection on the the greenhouse ambient temperature, soil moisture, carbon dioxide concentration and light intensity and other environmental parameters using a variety of sensors, real-time processing environmental parameters and soil temperature collected by the microcontroller. Duplex communication data transmission module to complete the host computer and the data acquisition module, data collection module based on the design of communication protocols collected data framing, Ethernet control chip RTL8019AS up bit machine, the host processing after the crew sent down irrigation, self-test and other control commands. Control Center module uses the Windows operating system PC as the server, VC as a programming language environment to accept and deal with the real-time parameter information collected by. The system administrator can view real-time the vegetable greenhouses real-time and historical data, can also print statements and the trend curve. Set the range of greenhouses parameters, dynamic management, based on the actual needs of the SMS alarm send SMS the ME3000GPRS module design, the node subsystem transmission parameter is out of range or the received security alert data by computer sound and light and mobile phone text messages, timely notify the greenhouse administrator, when the humidity is lower than the set value can be pre-set protocol to open the relay control solenoid valve device for smart irrigation. System through the on-line monitoring of greenhouse parameters, to achieve the purpose of promoting the growth of greenhouse vegetables, the effective use of information to improve the yield. The system has some versatility, practicality, flexibility and scalability, depending on the plant, the climate and environment.The flexibility to set the number of nodes, the parameter range.The system provide a reference to explore the greenhouse vegetable scientific production, the further development of intelligent agriculture.