攀枝花学院本科毕业设计（论文）基于FPGA的数字频率计设计
学生姓名：
学生学号：************
院（系）：电气信息工程学院
年级专业：2006级测控技术与仪器
指导教师：
二〇一〇年六月
摘要
在电子技术中，频率是最基本的参数之一，并且与许多电参量的测量方案、测量结果都有十分密切的关系，因此频率的测量就显得十分重要。数字频率计是数字电路中的典型应用，是电子测量与仪表技术最基础的电子仪器之一，是计算机、通讯设备、音频视频等科研生产领域不可缺少的测量仪器。与传统的频率计相比，数字频率计具有精度高、测量范围大、可靠性好等优点。是频率测量的重要手段之一。
该论文研究基于FPGA的数字频率计的设计，在QuartusII环境中，运用VHDL语言完成数字频率计的设计，并对设计进行综合、编译、仿真。通过仿真分析，证明该频率计测量结果的正确性。本文的主要内容概括如下：
①介绍了数字频率计的基本内容和重要性，并对数字频率计的国内外研究现状进行了总结；并概括了本次设计的主要任务和内容。
②介绍了数字频率计设计开发环境，并对FPGA、QuartusII、VHDL进行了详细介绍对开发流程详细说明。
③根据实际需要对数字频率计设计方法、方案进行了可行性比较，并对其实现的功能进行了具体要求，对设计模块进行了划分，并定义了每个模块所实现的功能。
④用VHDL语言编程，具体实现频率计各个模块的功能, 对数字频率计仿真并验证其功能。
关键词：FPGA，QuartusII ，VHDL，频率计
ABSTRACT
In electronics,frequency is one of the most basic parameters.And it have a close relationship with many measurement program of electrical parameters and measurement results, so the measurement of frequency is very important.Digital frequency meter is a typical applications in digital circuit,and one of the most basic electronic devices in electronic measurement and instrumentation technology. Digital frequency meter is an indispensable measuring instruments for scientific research and production as computers, communications equipment, audio, video. Compared with the conventional frequency counter,digital frequency meter have a high accuracy, measurement range and a good reliability. It is one of important measure for frequency measurement:
The thesis research in design of digital frequency meter,FPGA-based. VHDL language is used to complete the design of digital frequency meter in QuartusII,and completed thesis with composited, compiled, simulated. Through simulation and analysis, The results show that the accuracy of measure for the frequency. The main contents of this thesis are summarized as follows:
Firstly,it introduced the importance and basic content of digital frequency meter, and current research is summarized .the main tasks and content of this design are summarized.
Secondly,design and development environment of digital frequency meter are introduced. FPGA, QuartusII and VHDL are described in detail.
Thirdly,according to the actual needs of the digital frequency meter, design method and design program are compared to achieve the functions of their specific requirements, and defines the functions of each module to achieve the function.
Lastly,the functions of each module achieved with VHDL language programming, simulation and verify functionality of the digital frequency meter
Key words FPGA，QuartusII ，VHDL，digital frequency mete
