基于單片機控制溫濕度的系統(tǒng)外文及翻譯(已修改)
2025-06-18 22:44 本頁面
【正文】 New Environment Parameters Monitoring And Control System For Greenhouse Based On Masterslave DistributedAbstractAccording to the actual need of monitoring and control of greenhouse environment parameters in rural areas,a masterslave distributed measurement and control system is designed,in which PC is taken as the host. The system consists of PC ,soil moisture measurement and control module,temperature and humidity, and CO2 monitoring and control module. In the system,PC has large amount of data storage which is easy to make use of fuzzy control expert system,configuration softwareKingView is used to develop software for PC,by which the development cycle is shorten and a friendly humanputer interaction is monitoring and control module consists of STC12 series of microcontrollers,sensors,relays modules are select based on the need if system to achieve control greenhouse in partition and block.I. INTRODUCTIONTo modern indoor agriculture, the automatic measurement and control of environment parameters is the key to achieve crop yield and quality of recent years,facilities agriculture develops vigorously in our country,matched with it,the monitoring and control instrument of greenhouse have also made certain nearly 10 years of unremitting hard work,our research team of measurement and control system of agriculture environment parameters,designed an intelligent measurement and control system of distribution bined of greenhouse which can be popularized in the vast rural system is mainly control of temperature,humidity,CO2 concentration,soil moisture and illumination of SCM,as the data storage is small,display interface is single,amount of information is limited,but its capability price ratio is high,so it is used as a front unit of data acquisition and control。and of PC,it has a large amount of data storage,rich software,convenient humanputer interaction,and so we use outdated and lowpriced PC,taking the PC as the upper machine,taking the different function control modules posed of multiple microputers as the lower machines,then a masterslave distributed and intelligent control system bases on microputer is made up,by which both better monitoring and control,display and data collection or management are achieved,but also lower cost of system is get according to the actual need.II SYSTEM STRUCTURE AND PRINCIPLEThe most marked feature of the distribution bined and intelligent control system greenhouse is that of incorporating with data acquisition, control and management as a whole,module bination, simple structure,convenient humanputer interaction,and using technology of intelligent expert fuzzy control,which can adapt to a variety of crop management control in basic structure of the system is shown in .The structure of the distributed system is posed of two layers:the upper and the topprice PC is taken as the host to make system management and experts fuzzy operation in intelligent,and to provide a friendly humanputer interface,and to realize the united monitoring and management of greenhouse。 the lower is posed of a series of modules of different function,and in each module,a single chip of AT89C is adopted as the lower machine,RS485 is used to municate PC with all AT89C,and then the collection,processing and control of the greenhouse parameters is function module is pletely isolated in electrical,any failure on the nodule does not produce any effect on other system collects separately ways of environment information through each monitoring and control module,and sends it to host PC through the RS485 in the PC configuration control system,the acquired parameters are pared with the values of setting,then according to a variety of expe
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