The Design Of Meteorological Data Acquisition And Processing System

Radiosonde equipped with meteorological data detection collector can detect high altitude data,which is an important basis for weather forecast and analysis.When the radiosonde temperature sensor works,the temperature sensor has to be exposed to solar radiation during the detection of meteorological data to ensure that the surface has sufficient ventilation,resulting in a radiation error with an error value of 0.8 K or higher due to the heated sensor surface.At present,the speed of climate warming is about 0.1 K/10 a.If the accuracy of the temperature sensor is required to reach the 0.1 K level,a more accurate radiation error correction method must be sought.To solve this problem,a meteorological data acquisition and processing system with radiation error correction was designed in this paper.In this paper,the hardware collector part of the data acquisition and processing system was designed,which mainly includes main controller,meteorological element sensor,communication module and power module.In this paper,a method of analyzing radiation error using computational fluid dynamics is proposed,by analyzing the bead thermistors numerically,the distribution of temperature field around the bead thermistor in the high altitude environment is obtained.According to the experimental data of the hardware platform,the radiation error values at different altitudes,lift-off speeds,and solar radiation intensity are calculated.In order to improve the universality of the method,this paper also proposes a method of using BP neural network to fit the experimental results.The radiosonde temperature sensor radiation error correction formula that can be used in practice is obtained,and the meteorological data detection and acquisition are realized.This paper takes Microsoft Visual Studio 2015 as the development platform,adopts C#language to design and develop PC-end meteorological data acquisition and processing software.It realizes the functions of PC-end meteorological data acquisition,storage,graphic display and waveform display by using ADO.NET Data Access,GDI+,Handler and other technologies.Considering the variability of the radiosonde operators' workplace,this paper uses Java language to design and develop PC-end meteorological data acquisition and processing software.By using the tools provided by Android to perform custom drawing of the control,the self-checking of the radiosonde before work and the acquisition,storage and display of meteorological detection data of the mobile terminal are realized.Both software have integrated radiation error correction equations.They all have the ability to correct radiation temperature sensor radiation errors in real time,significantly improving the accuracy of meteorological detection temperature data.