[1]陶志福,陈美珠.基于CPLD的多用信号发生器的研究与设计[J].苏州市职业大学学报,2008,(03):10-12.
 TAO Zhi-fu,HUAI Wen-jun.The Study and Design of a CPLD-based All-purpose Signal Generator[J].,2008,(03):10-12.
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基于CPLD的多用信号发生器的研究与设计
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《苏州市职业大学学报》[ISSN:1008-5475/CN:32-1524/G4]

卷:
期数:
2008年03期
页码:
10-12
栏目:
电子与信息技术
出版日期:
2008-09-25

文章信息/Info

Title:
The Study and Design of a CPLD-based All-purpose Signal Generator
文章编号:
1008-5475(2008)03-0010-0
作者:
陶志福1陈美珠2

(1援苏州市职业大学电子信息工程系,江苏苏州215104;2.泰州职业技术学院电子工程系,江苏泰州225300)
Author(s):
TAO Zhi-fu1 HUAI Wen-jun2
(1.Suzhou Vocational University, Suzhou 215104, China; 2.Taizhou Vocational College, Taizhou 225300, China)
关键词:
关键词:AT89C51CPLD积分电路二极管整形网络
Keywords:
Key words: AT89C51CPLDall-purpose signal generator
分类号:
中图分类号:TP311
文献标志码:
A
摘要:


摘要:以AT89C51 系列单片机和CPLD 芯片为核心,由运算放大器LM318等器件构成多用信号发生器。该信号
发生器利用晶振产生的振荡信号展开设计,运用软件计算出所需波形的频率、相位,再利用RAM读出技术将数据从
CPLD 的内部读出,并经过高速A/D转换器后输出脉冲信号。该信号经外部滤波放大,产生稳定的方波信号。经过进
一步的处理,方波信号转化为三角波和正弦波信号,然后再利用软件部分对该系统的控制,使信号发生器能够产生
幅值可调的正弦波、三角波和方波信号,且其输出频率能够在10HZ~100KHZ 范围内连续可调。

Abstract:
Abstract: Centering on the series of AT89C51 single chip computer and the CPLD chip, a type of allpurpose signal generator is made with the LM318 amplifier and other elements. This signal generator utilizes the oscillator signal produced by the crystal to be launched into design. Using the software movement, the frequency and phase of the needed waveform are obtained. Furthermore, using the RAM read-out technology, the signal is readout from the CPLD interior, and at the same time, it is converted into pulse signal by the high speed A/D converter. This pulse signal is magnified when it passes through the exterior filter, and then the stable square-wave signal is produced. Besides, this signal can be changed as the triangular wave and the sine wave signals. Then, by utilizing the software part to control the system, the signals of sine, triangle and square -wave with adjustable -magnitude are obtained, and the output frequency of these signals are also adjustable continuously between 10HZ and 100KHZ.
更新日期/Last Update: 2008-10-13