文档介绍：I 摘要本文介绍了一种基于 TMS320182 DSP芯片 A/D 模块进行波形采集后滤波处理且最终在液晶显示器显示所采集的波形图。系统利用 DSP 内置 A/D 功能对外部模拟电压信号(波形)采集转换成数字信号, 然后在用外部 LCD 显示屏显示所采集波形的形状。本文给出了整体设计方案,重点介绍了 DSP 模数转换功能和液晶显示( LCD )原理。实验结果表明:系统的 LCD 所显示的波形和实际采集的模拟信号有良好的准确性, 能进一步加深读者对 FIR 滤波器的了解和其参数的修改。关键词: TMS32OF2812 DSP,FIR 滤波器, 波形采集,液晶显示,数字滤波 II Abstract This paper introduces a kind of waveform acquisition module based on TMS320182 DSP chip A/D after filtering and ultimately displays in the LCD display. The system uses DSP built-in A/D function to exchange the analog voltage signal to the digital signal, and then uses the external LCD to display the waveform shape. This paper gives the overall design scheme, and put emphasis on the DSP analog-to-digital conversion function and liquid crystal display (LCD). The experimental results show that: the LCD of the system displays of the waveform and the actual analog signal with good accuracy, it can further deepen the understanding of the FIR filter and its parameter modification. Keywords : TMS32OF2812 DSP, the FIR filter , Waveform acquisition , Liquid crystal display , Digital filtering III 目录摘要...................................................................................................................................................... I Abstract ............................................................................................................................................... II 第1章绪论....................................................................................................................................... 1 引言...................................................................................................................................... 1 本课题要解决的问题.......................................................................................................... 1 课题的意义和目的.............................................................................................................. 1 第2章 FIR 的滤波器的信号滤波系统的软硬件设计..............................