多功能显示器自动测试设备测控软件设计

介绍了在Lab Windows/CVI开发环境中测控软件的总体设计;讨论了利用TTF字形轮廓数据画出TTF字体矢量轮廓的方法,并将其应用在多功能显示器测试画面中汉字显示的汉字笔划信号产生技术中;在简要介绍多线程技术的基础上,讨论了在软件设计中利用多线程技术提供的线程池机制解决测试过程中的实时性、高效性要求的方法;对测试过程中测试数据的读取、存储,介绍了利用动态数据交换(DDE)技术进行处理的方法;实际使用表明,该测控系统能满足对多功能显示器的测试要求.

Design of Testing and Control Software of Automatic Test Equipment of Multiple Function Display

Structure of the testing and control software of automatic test equipment of multiple function display in Lab Windows/CVI is introduced. Method of generating TTF font vector figure with TTF font figure data is discussed, and the method is used to generate Chinese stroke sigaal which is displayed in testing picture of multiple function display. To meet the demand of real time and high efficieacy, the application of multi-thread in designing the software is mentioned, in which, thread pool provided by Lab Windows/CVI is introduced to make the application possible. Method of processing data from testing the multiple function display with dynamic data exchange in Lab Windows/ CVI is also discussed. The fact shows that the testing and control system can meet the testing demand of multiple function display.