Design And Implementation Of Data Acquisition System For Automatic Meteorological Station In Facility Agricultural Area

With the development of modern agriculture towards intelligent and refined facilities agriculture,facility agriculture has become an important part of modern agriculture.However,thetraditional meteorological measurement devices are still used in the current meteorological information monitoring platform,which are not enough to meet the requirements of the modern meteorological monitoring of modern agriculture.In view of this,the data acquisition system of automatic meteorological station was designed in this paper for a facility agriculture area,in which the real time data acquisition and high efficiency monitoring of temperature,humidity,wind speed,wind direction,rainfall,evaporation and atmospheric pressure were completed,and the meteorological data storage and query functions were realized.The research results have a high application value and theoretical significance to improve the meteorological monitoring ability and promote the development of the intelligent automatic meteorological station.The main research work and contributions of thedissertations can be summarized as follows:(1)By the analysis of system function demand of facility agriculture area automatic meteorological station,and according to the design standard and acquisition performance,system microprocessor and the meteorological sensor were selected reasonably,and the meteorological station system architecture was designed,in addition,the feasibility of meteorological station system design was analyzed.(2)Through the use of STM32 development platform,the hardware circuit of the automatic meteorological station system of agricultural facilities area was built,and then the power module circuit,temperature and humidity module circuit,wind module circuit,rainfall module circuit,evaporation module circuit,atmospheric pressure and other meteorological data acquisition circuit module circuit was designed,and the RS485 communication module circuit,W5500 Ethernet the communication circuit of meteorological data communication circuit was designed.(3)By using VS2010 development platform and MDK5 development software,the software program of upper and lower computer was developed.This paper mainly focuses on the following program,and the sensor driver and data communication program were written.Finally,the communication protocol based on TCP/IP was designed,and the software design of the host computer was introduced.(4)Based on the meteorological data storage design and join the Fatfs file system,the memory card data read and write management,SD card for all the data and the query and download function was implemented on the host computer.Finally,through the test and application of the automatic meteorological station system,the system was verified to meet the design requirements.