粮情检测系统检测数据的可视化显示

VISUALIZATION OF THE MEASUREMENT DATA FROM THE STORED GRAIN MONITORING SYSTEM

在储藏过程中 ,粮堆可能出现发热、霉变、虫害孳生等情况。当储粮水分含量高、生虫、霉变时 ,会引起粮堆温度升高。因此 ,粮堆温度是储粮状态的重要标志 ,必须准确地检测并适时显示。本文将计算机图形技术引入粮情检测 ,利用图形消隐向用户提供直观生动的三维温度分布图 ,用户可用鼠标选取某一点以观察、显示该点的空间位置及温度值 ,同时显示纵横剖面图 ,便于发现异常温度点。用VisualBasic 6 .0编制绘图程序 ,为研制。

During grain storage,there would be some phenomena happened in the grain bulk,such as heating,mould and propagating.When high moisture,pest and mould occurred,the activity of biology and chemistry in the grain bulk will result in the temperature rising of the grain bulk.Therefore stored grain temperature must be monitored accurately and visualized betimes.This paper introduces the computer graphics to the monitoring system used to detect the stored-grain condition,using removal hidded-lines technique to supply the user with intuitionistic and verisimilitudinous three-dimension temperature distributing graphics.In this picture,when the user uses mouse to pitch on a special point in the grid,the graph can display and output the corresponding point's position and the temperature value in the screen,and can also show the cross sections of temperature in x and y directions at the same time,in this case it is very convenient for user to find the abnormal temperature point.The Visual Basic version 6.0 was used to programme for drawing the three-dimension graphics.The technique provides the good basis to research and develop the information management system with independence property right for the grain storage.