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本科生毕业论文(设计)
题目:基于DAC0832波形发生器设计与实现
系部计算机科学与技术
学科门类工科
专业计算机科学与技术
学号
姓名
指导教师
2013年 5 月 15 日
基于dac0832的波形发生器设计与实现
摘要
波形发生器是能够产生大量的标准信号和用户定义信号,并保证高精度、高稳定性、可重复性和易操作性的电子仪器。函数波形发生器具有连续的相位变换、和频率稳定性等优点,不仅可以模拟各种复杂信号,还可对频率、幅值、相移、波形进行动态、及时的控制,并能够与其它仪器进行通讯,组成自动测试系统,因此被广泛用于自动控制系统、震动激励、通讯和仪器仪表领域。
本论文是研究基于DAC0832波形发生器设计与实现。论文采用文献研究法、模拟法、观察法等方法进行课题的研究。系统是用AT89S51作为系统的控制核心,外围电路采用数字/模拟转换电路(DAC0832),运放电路(TL082),按键,定位器,LCD显示器等。系统通过按键来和定位器进行整个系统的控制,按键控制切换产生正弦波,锯齿波,三角波,阶梯波,四中波形,而幅值和占空比是通过定位器来进行调节。系统经过调试和最后的检测,可以得出本系统一下特点:性能较好,稳定性强,价格便宜,容易操作,具有一定的实用性,最后的成品可以用在常用的有波形发生器功能要求的应用电子仪器设备上。
关键词:单片机波形发生器 DAC0832
ABSTRACT
The profile generator is can produce the massive standard signals and the user definition signal, and guarantees the high accuracy, high stable, the repeatability and the easy operational electronic instrumentation. The function profile generator has the continual phase transformation, and merits and so on frequency stability, not only may simulate each kind plex signal, but also may to the frequency, the peak-to-peak value, the phase-shift, the profile carry on the tendency, the prompt control, and can carry on munication with other instruments, position automated test system, therefore widely uses in the automatic control system, the vibration drive, munication and the instrument measuring appliance domain.
This paper is studing on waveform generator design and implementation based on the DAC0832. The system is used AT89S51as the core of the control system, a peripheral circuit using digital / analog conversion circuit ( DAC0832), operational amplifier circuit (TL082), keys, locator, LCD display etc.. The system through the keys and locator for the entire system control, The key control switch generates a sine wave, sawtooth, triangle wave, ladder wave, fourth waveform, while the amplitude and duty ratio is adjusted by the locator. The system debugging and the final test, the system can reach a characteristic: good performance, high stability, low