文档介绍：2012届毕业设计(论文)
题目:
无线心电监测系统的设计
专 业 班 级:
电子信息工程02班
学 号:
姓 名:
指导教师:
教授
学院名称:
电气信息学院
2012年 5 月 25 日
无线心电监测系统的设计
the Design of Wireless ECG Monitoring
System
学生姓名:
指导教师:
摘要
本文设计一种无线心电监测系统,该系统能测量、存储、回放、分析病人的心脏跳动情况,而且能在心电不正常时,自动向预约医疗单位发出远程报警信息。
系统的方案是:采用心电检测电路对心电信号进行采样和调理,用GPRS无线传输电路将心电信号传输到预约医疗单位,通过医疗单位的监测设备显示和记录心律失常信息。
系统的工作原理是:心电检测电路对人体心电信号进行采样,并对采集到的心电信号进行初级放大,以减少心电信号的损失,通过其内置的前置放大、右腿驱动、滤波、电平抬升、50Hz带阻滤波器等电路等对心电信号进行调理,以得到准确有效的心电信号;MSP430中内部含有有A/D转换器部件,完成对心电信号的转换,以得到相应的数字化心电信息;数字化心电信号的存储采用了SD卡;图形回放使用的是NI公司生产的PCI-6731数模转换卡(远端)和TFT彩色LCD显示器(本机);心电信息的远传采用了M22,其传输过程通过16位MSP430实现。
调试证明,该系统具有较好的抑制心电信号噪声的能力,心电基线漂移小,测量准确,使用便利,能够满足病房和家庭无线心电监测的基本要求。
关键词:心电信号;采集;存储;回放;远传
Abstract
In this paper, the design of a wireless ECG monitoring system, the system can measure, store, playback, analysis of the patient's heart beat, abnormal ECG, automatic remote alerting information to make an appointment medical units.
System options are: ECG detection circuit ECG signal sampling and conditioning, and GPRS wireless transmission circuit ECG transmission to the appointment of medical units, medical unit of the monitoring equipment to display and record arrhythmias information.
The system works: ECG detection circuit of the human ECG signal is sampled and collected ECG primary amplification, in order to reduce the loss of the ECG signal through its built-in preamp, right leg drive , filtering, level uplift, 50Hz band-stop filter circuit ECG signal conditioning, accurate and effective ECG; the MSP430 internal containing the A / D ponents plete the conversion of the ECG to digital ECG information; the storage of digital ECG signal using the SD card; graphics playback using a NI PCI-6731 digital to analog conversion card (remote) and TFT color LCD display (native) Remote; ECG information using the M22, its transmission to achieve 16-bit MSP430.
Debugging proved that the system has a better ability to inhibit the ECG noise, ECG baseline drift, measurement accur