摘 要:本文开发了一种基于C8051F单片机的心电数据采集系统。心电数据采集系统是心电图检测仪的关键部件。在医学方面,以心电数据采集系统为代表的计算机数据采集系统为医生更好的诊断和医治心脏疾病提供了可靠依据。本文首先介绍了心电信号的相关知识,其次进行心电信号模拟电路的设计,通过放大电路、滤波电路等对心电信号进行调理使其能被无失真的提取,并进行A/D转换。最后利用串行通信接口技术实现单片机与PC上位机之间的通信并进行仿真,从而实现心电数据采集系统的设计。56782
毕业论文关 键 词:C8051F,心电信号,数据采集,滤波电路
Abstract:This paper developed a kind of ECG data collection system which is based on SCM C8051F. ECG data collection system is the key components of electrocardiogram (ECG) detector. In the field of medicine, the computer data collection system,which is represented by ECG data collection system, provided better diagnose and treatment of heart disease for doctors. This paper firstly introduced some related knowledge of electrocardiogram signal.Then,it designed analogous circuit of the electrocardiogram signal, which aims to regulate electrocardiogram signal to make the electrocardiogram signal be extracted undestroyed by amplifying circuit, filtering circuit and so on,and convert it by A/D machine.Finally, the design of ECG data collection system was realized through the serial communication interface technology, which is used to realize the communication and simulation between SCM and upper machine of PC.
Keywords:C8051F,ECG,Data collection,Filter circuit
目 录
1 绪论 4
1.1 引言 5
1.2 本课题主要研究内容 5
1.3 本课题研究意义 5
2 系统概述 6
3 心电信号相关知识 6
3.1 引言 7
3.2 心电的起源和心电图 7
3.2.1 心电的产生 7
3.2.2 心电信号特征 7
3.3 心电信号的噪声 8
4 心电信号模拟电路的设计 8
4.1 放大电路整体要求 8
4.2 系统结构及信号调理 10
4.2.1 前置放大电路 10
4.2.2 主放大电路和电平抬升电路设计 10
4.2.3 带通滤波电路 12
4.2.4 抗工频干扰电路设计 13
4.3 A/D转换器 14
4.4 A/D转换器的选择 15
4.5 ADC模块 15
5 单片机数据采集系统 16
5.1 单片机系统性能特点 18
5.1.1 单片机选型要求 18
5.1.2 C8051F单片机性能特点 19
6 计算机接口电路 20
6.1 接口的功能特点和传输方式 20
6.2 数据采集的串行通信接口技术 基于C8051F单片机的心电数据采集系统设计+程序+电路图:http://www.youerw.com/zidonghua/lunwen_61358.html