设计一个含有有源带通滤波器的数据采集系统 毕业论文 .doc

本 科 毕 业 设 计 论 文 题 目 设计一个含有有源带通 滤波器的数据采集系统 系 别 电气与信息工程系 专 业 测控技术与仪器 班 级 测控XXX 学 号 XXXXXX 学生姓名 XXX 指导教师 XXX 2014年5月摘 要 随着信息领域各种技术的发展，在数据采集方面的技术也取得了长足的进步，采集数据的信息化是目前社会的发展主流方向。各种领域都用到了数据采集，在石油勘探、地震数据采集领域已经得到应用。随着测控技术的迅猛发展，以嵌入式计算机为核心的数据采集系统己经在测控领域中占到了统治地位。数据采集系统是将现场采集到的数据进行处理、传输、显示、存储等操作。数据采集系统的主要功能是把模拟信号变成数字信号，并进行分析、处理、存储和显示。国内大大小小很多公司多开发了数据采集器和卡之类的产品，这使信息的数字化提供了极大的方便。 该设计就是利用单片机作为控制核心，系统分为带通滤波模块，A/D转换模块，采集数据模块以以及显示模块。整个数据采集系统以单片机为控制核心器件，由ADC0808数模转换器对输入的被测物理量进行数据采集，将采集的数据送至单片机处理，最后将处理后的数据通过液晶显示器及示波器显示被测信号。 关键词：，带通滤波器，数据采集，A/D转换 Along with the development of information field various technologies, the technology in the aspect of data collection has also gotten rapid advance, gather the informative process of data is now society develop the direction of main stream. Various fields have used data collection , in petroleum exploration and seismic data collection field have gotten application. As measuring to control technical swift development, with embedded computer for key data collection system Ji go through in measure to control field in have taken dominance position. Data collection system is to carry out the data that the collection on-the-spot goes to to handle , transmits and shows , stock etc. operation. The major function of data collection system is simulated signal become digital signal, and analyse handling , stock and show. Domestic size many companies have developed data collection ware and the product that blocks and so on , this makes the digitlization of information have offered maximum convenience. This design is as the core control chip, the system is divided into the bandpass filter module, A/D conversion module, data acquisition module and display module. The data acquisition system based on single-chip microcomputer to control the core device, the ADC0808 digital to analog converter on