基于Windows图形环境的采集数据波形重建方法

Method of Rebuilding Signal Figure of Acquisition Data Based on Windows Graphic Setting

在用户设置特定的时间分辨率和幅值分辨率的条件下,针对VisualC++6.0和C++Builder5.1等开发工具所带波形显示控件在重建采集数据波形时使用不灵活、显示速度慢等不足,在分析了Windows图形环境的情况下提出了基于MM_ANISOTROPIC坐标映射模式的正确重建采集数据波形的一种方法,利用此方法,设计了用于数据采集系统虚拟仪器软件的OsciActiveX控件,实践表明,Osci控件波形显示精确,具有形象逼真模仿实际示波器的效果。

When the time division and voltage division have been set by user, the display controls in conventional software development tool such as Visual C++6.0 and C++ Builder 5.1 have the deficiencies,i.e.,inflexibility and slowness,when they are used for rebuilding acquisition data signal figure. After the graphic setting of Windows OS is analyzed,a novel approach of rebuilding acquisition data signal figure correctly based on MM_ANISOTROPIC coordinate map-mode is brought forward in the article. Using this approach,Osci ActiveX control used in VI software for data acquisition system is designed. It is proved that Osci ActiveX control can rebuild acquisition data signal figure accurately and imitate real oscillograph visually and vividly.