使用Chart控件实现生理信号的实时显示  

Development of showing vivid physiology signal system based on TeeChart controls

作　　者：文治洪[1] 胡文东[1] 李晓京[1] 马进[1] 王涛[1] 

机构地区：[1]第四军医大学航空航天医学系,陕西西安710032

出　　处：《电子设计工程》2011年第5期63-66,共4页Electronic Design Engineering

基　　金：国家自然科学基金资助项目(60879007);军队医药卫生基金(06M256)

摘　　要：针对生理信号测量数据采集过程中实时显示、调节信号的实际需求,采用基于Delphi 7.0的TeeChart控件开发了显示多通道不同采样频率生理信号数据图形的系统,采用Delete()函数和AddXY()函数配合实现信号的滚动显示;采用SetMinMax()函数改变纵坐标范围的最大、最小值实现信号幅度的调节;采用控制Chart窗口的显示数据点数多少来调节信号的显示速度,深入探讨了TeeChart控件实现实时生理信号波形显示的编程方法,给出了详细的例程。实验结果表明,使用TeeChart控件进行实时画图的方法可以实现多通道、多条曲线的叠加实时显示、调节,提高了编程效率,比传统的作图方法更有优势。To meet the practice requirement of showing vivid graphic tracking in acquiring physiology signal, a graphic tracking system for showing multiple-channel physiology signal with various sampling frequency was developed based on TeeChart controls for Delphi 7.0. Signal rolling show works by combining AddXY （） with Delete （） function. Adjusting signal amplitude works by setting vertical coordinates range using SetMinMax function. Tracking speed works by adjusting points in a Chart window. The programming method of TeeChart controls is introduced in detail and several program examples have been listed. The results indicate that several channels signal could been vivid drawn and adjusted by using TeeChart controls. It is programming efficiency after using TeeChart controls and advantage than using tradition way to graphic tracking.

关 键 词：生理信号 TEECHART控件 DELPHI7.0 图形显示 

分 类 号：TP274[自动化与计算机技术—检测技术与自动化装置]