基于proteus的波形发生器设计

传统的单片机应用系统设计方法是先做出硬件,再编程调试,有开发时间长、不易修改和查错等不足,本文应用目前唯一能仿真单片机运行的proteus软件,实现了波形发生器的软硬件设计和仿真调试。该设计采用单片机AT89C52、D/A转换器DAC0832等器件,可通过按键切换不同波形(方波、锯齿波、三角波和正弦波)和输入信号频率,并在LCD上显示,而且可利用虚拟示波器观察输出波形。另外在算法上通过设置比例因子,提高了信号的输出频率。本系统应用proteus软件,将软硬件设计集于一体,便于调试和完善,成本低廉,给后期的实物制作提供了可靠保障。测试结果表明,系统性能稳定,参数精确,波形清晰,信号最高频率可达10 kHz,能满足工程及实验的一般要求。

Design of Waveform Generator Based on Proteus

The traditional design method of single chip microcomputer （ SCM ） application system makes hardware firstly,and then goes on with programming and debugging,which results in some defects such as long development time,not easy to modify and check,and so on. The paper uses the only SCM operation simulation software current-ly,Proteus,on which the software and hardware of the waveform generator are designed and debugged entirely. The design consists of SCM AT89C52,D/A converter DAC0832 and other devices,it not only can switch the different waveform （ square wave, sawtooth wave, triangular wave and sine wave ） and input signal frequency through the keys,display the parameters on the LCD,but also can use the virtual oscilloscope of the Proteus software to observe the output waveform. Furthermore, the signal output frequency is increased by setting the scale factor. The Proteus software used in the system makes the software and hardware design in one,easy to debug and improve,low cost, and provides a reliable guarantee for the later physical product. Test results show that the performance of system is stable,has accurate parameter and clear signal waveform,and the highest frequency of output signal can reach 10 kHz,which can meet the general requirements of engineering and experiment.