CPLD和虚拟仪器的频率计综合设计

在自制的虚拟仪器实验箱和CPLD实验板及通用计算机上，采用CPLD技术设计了测量频率的硬件电路和虚拟仪器的LabVIEW图形语言开发平台，设计了频率计的人机界面和软件程序；通过软硬件调试和测试，完成了一个较复杂的综合性、设计性实验。文中的实验综合应用了电子测量原理、数字电路技术、CPLD技术、虚拟仪器、程序设计等课程的知识和技术，理论结合实际，其设计思想新颖，具有启发性、设计性、趣味性、先进性、探索性等特点。分析过程中应用引导式教学，进行了层次化、模块化设计，使实验更具可操作性和推广意义。

A Frequency Meter Experiment with Synthesis and Design Base on CPLD and Virtual Instrument

After testing of hardware and software parts,a complex comprehensive experiment is completed in this paper,whose hardware circuit design is using the CPLD technology while the design of man-machine interface and software program of the frequency meter are based on the G language LabVIEW of virtual instruments.This experiment is based on the CPLD chip or the virtual instruments experiment box and general computer.The experiment integrated various knowledge and technologies,such as Principle of electronic measurement,Digital circuit,CPLD,Virtual instruments,Program Designing,etc.Theory connected with practice,this thought of designing is innovative,interesting,advanced and explorative.After the using of guide teaching,a hierarchical and modular design is adopted,which made the experiment more operative and of high publicity.