2011年华中科技大学xilinx-依元素科技fpga电子设计大赛文档.docVIP

2011年华中科技大学xilinx-依元素科技FPGA电子设计大赛文档 题数字信号发生器及其频率计 班级： 华中科技大学控制系自动化0901班 成员： 梁云龙 U200914247 汪雄峰 U200914265 黄冠 U200914260 指导老师 汪小燕 2011-12-10 简易数字信号发生器及其频率计 摘要：本文设计的简易数字信号发生器及其频率计，是以Digilent Basys 开发板为主体，辅以2片ADC0832，2片TLC5615，以及6片NE5532等芯片组成的外围电路，通过编程实现输出用户希望得到的波形。本文设计的简易数字信号发生器及其频率计可以同时产生两路频率、幅值、以及波形类型可调的信号，波形有3种，分别是正弦波、方波、以及三角波，输出信号通过了DA转换，可以使用示波器查看。可以同时检测三路的输入信号，通过串口将Digilent Basys 开发板和电脑相连，可以在用户界面查看到用户输入的波形及其频率等参数，有良好的交互界面。该项目在推广小型信号发生器方面有十分大的潜力，比如维修各类电子产品，微小信号的检测等方面，都有很大的市场，具有极高的应用价值。 关键词：输入、输出信号；频率；幅度； Simple digital signal generator and its frequency measuring tool Abstract:In this paper the designed simple digital signal generator and its frequency measuring tool is based on Digilent Basys development board as the main body, and with the two pieces of ADC0832, two pieces of TLC5615, and six pieces of NE5532 etc of chip buffer circuit, through the program realizing user’s hope to get the output waveforms. In this paper the designed simple digital signal generator and its frequency measuring tool can also produce two road frequency, amplitude, and waveform type adjustable signal waveform, the waveform is a sine wave, a square wave, and the triangle pulse wave, the output signal through the DA conversion, can use an oscilloscope to check. And the input signal detecting three road signal, through a serial port ,The Digilent Basys development board and the computer connected, with a good user interface, in the user interface for the user can display the input of the waveform and its frequency characteristics,The project in the promotion of small signal generator has a very big market, such as the maintenance of all kinds of electronic products, small signal detection and so on, it has a high application value. Keywords:inout,output signal ；frequency；amplitude 目录 一、系统设计目标 4 1. 基本设计目标 4 2. 发挥与拓展 4 二、系统方案设计与论证 5 1 系统方案选择与比较 5 2. 系统框图和方案描述 5 三、理论分析计算 6 四、单元电路设计与功能实现说明 6 1、单元电路设计(模块) 6 2.流程图 6 3、模块实现 7 4. 扩展电路设计 9