信号源的设计与制作.doc
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通信信号测试报告
学 院: 电子与信息工程学院
学生姓名:
专业班级: 1移动通信技术班
学 号:
2015年 月 03 日摘 要
信号发生器简称为信号源,它能产生标准的信号,常运用于电子实训室及工业中。它能提供已知波形、频率、幅度大小输出电压和电流信号,为测量各种模拟系统和数字系统提供不同的信号源。
函数信号发生器即简易函数信号发生器,是一种能够产生多种波形,如方波、正弦波等波形的电路。在电路实验和设备检测中具有十分广泛的用途。通过对函数信号发生器的原理及构成分析,可设计一个能够变换出三角波、正弦波、方波的简易发生器。
函数信号发生作为一种常用的信号源,在电子电路、自动控制系统及实验室等领域有很大作用。采用AT89C51单片机和键盘电路作为核心控制,8255作为显示芯片,双DAC0832控制输出波形参考幅值构成的发生器可产生正弦波等多种波形。由内部程序设定频率和幅值,在键盘控制下输出相应波形。以最经济,最方便,最优化的设计策略来完成课题的要求。
关键词:函数信号发生器;AT89C51;DAC0832
Abstract
Signal generator referred to as the source, it can produce standard signal, often used in electronic training room and industry. It can provide known waveform amplitude, frequency, the size of the output voltage and current signals, for measuring various simulation system and digital system provides different source.
Function signal generator that is simple function signal generator, it is a kind of can produce a variety of waveform, such as square, sine wave and waveform of the circuit. In circuit experiment and test equipment in a very wide range of applications. Through the function signal generator of the principles and components of the analysis, a design can transform the triangular wave, sine wave, square wave simple generator.
Function signal occurred as a common source, in the electronic circuit, automatic control system and laboratory and other fields have a great effect. The AT89S51 and keyboard circuit as the core control, 8255 as a display chip, double DAC0832 control output waveform amplitude reference a generator can produce sine wave and so on many kinds of waveform. The internal program set frequency and amplitude, the keyboard control output corresponding waveform. In the most economic, most convenient and optimization design strategy to complete the project requirements.
Key Words: Function signal generator;AT89C51;DAC0832
目 录
摘 要 I
Abstract II
引 言 1
第1章 方案及设计 2
1.1设计与制作 2
1.2发生器的技术指标 2
1.3操作设计 2
第2章 硬件结构 3
2.1单片
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