Design Of Temperature And Humidity Intelligent Monitoring System Based On MCU And Visual C++

With the rapid development of electronoic technology，the system of monitoringhumidity and temperature is using more widely，both in Agricultural production andIndustrial production，can see the prouducts about humidity and temperature．Traditionalsystem of monitoring humidity and temperature with Simplifying assumptions，notintelligent and complete function，compared to the system of temperature and humidityintelligent monitoring system based on MCU and Visual C++with its intelligence，bringing the computer to the monitoring sysem，which can monitor the temperature andhumidity exactly and intelligently，what’s more the designe scheme embedded a camerabased on VFW，ensuring the security in the special environment．The design schemeachieves the goal of true unmanned intelligent monitoring about temperature andhumidity．In the paper， a design scheme of intelligent monitoring system of the temperature andhumidity in the greenhouse，which is based on microprocess and Visual C++，isproposed．The system is composed of singlechip and PC two parts，where singlechip takespart of obtaining temperature and humidity in the greenhouse and PC takes part ofprocessing the datas of temperature and humidity intelligently．The lower machine moduleof acquisition temperature and humidity based on STC89C52RC，external DHT11sensorchip，FG12864E LCD screen and five LED composes the hardware system．PC is anapplications which is programmed in the plateform of MFC with Visual C++and basedon dialog box can process datas intelligently．The application The application realizesserial port communication through MSComm controls．At the same time，a graph based onTeeChart controls is set up in the main application window，which is used to displaytemperature and humidity in real time.Because the PC application must store big numberof datas，accesses the DataBase through the technology of ADO．In the consideration ofsecurity，the application embeds a camera module based on VFW in the main applicationwindow．The two parts of PC and lower machine works coordinately to monitor the twofactors of temperature and humidity in the environment through serial portcommunications．In the first place，the paper introduces the background and significance of the researchand the aim of the research and the main work in the paper．In the second place，it elaborates the scheme of the whole system and the running process of system．And then，it elaborates the principle of the hardware of the lower machine，includeing the hardwareresources of the STC89C52RC and the principle of DHT11，FG12864E and simulationmodule．The paper elaborates every module of the PC application，including the modulesof user management，setting parameters of the system，checking，camera．Finally，it givesthe experimental results of the temperature and humidity intelligent monitoring systemcaptures and analyze the experimental results．In the all，the main work of this paper can be sumerized as follows：1. elaboration to the system overall design scheme and work flow chart as a whole．2. describing the hardware design principle of temperature and humidity acquisitionmodule in detail．3. elaboration to every module of the PC application．4. showing the experimental results and analyzing and researching them．...