The Design Of The Display And Control Terminal Of The Forced Ventilation Temperature Sensor And Automatic Meteorological Station

The system of display and control terminal of meteorological instrument is an important link in meteorological sensor system research, the terminal as an important human-computer interaction means can provide the user with the means to control meteorological instrument and the accurate feedback of target information. The terminal designed in this article implements the state control function of forced ventilation temperature sensor and meteorological station and achieves to the display、 storage、transmission of real-time meteorological data. The terminal can fulfill three main functions as follows:Firstly, it can realize meter and real-time curve display of sensor data. Secondly, it can realize communication function includes serial communication between STM32 and terminal, UDP communication between client and server in Ethernet. Thirdly, it can realize real-time processing、storage、display、 export of meteorological sensor data.Several key technologies of forced ventilation temperature sensor and meteorological station system are involved in the studies of this paper:Firstly, exercising optimal design of L-shaped dome, using CFD method to make numerical calculations under the condition of different diameter、reflectivity、solar radiation intensity and air velocity, modifying radiation error through radiation error correction equation based on L-M algorithm. Secondly, constructing an automatic meteorological station acquisition system based on STM32, the system consists of temperature、humidity、wind speed and direction、radiation、aligned array pressure sensors、high precision and low noise measuring circuit、data acquisition system. Finally, through the overall tests of this forced ventilation temperature sensor and meteorological station system, the actual function can be verified.The paper use Qt to develop the system of display and control terminal. Qt is a cross platform C++ graphical user interface application framework. After developed the terminal based on Embedded Linux and Qt/Embedded, we ported the application to Windows and Android platform successfully. By this way, we can provide meteorological professional persons with operation platforms under all kinds of working environment.