基于蓝牙技术的心电动态监护系统的研究

电子机电论文编号:JD103   附开题报告,任务书,大图,字数:28693,页数:57

目 录
摘要 .......................................................I
Abstract ...................................................II

第1章绪论 ..................................................1
1.1 课题背景 ................................................1
1.1.1 心血管疾病状况.........................................1
1.1.2 动态心电监护的发展 ....................................1
1.1.3 无线监护技术.......................................... 2
1.1.4 课题研究的目的及意义 ..................................3
1.2 蓝牙技术发展及应用.......................................5
1.2.1 蓝牙技术的发展........................................ 5
1.2.2 蓝牙技术的特点 ........................................5
1.3 课题研究的目的及意义.....................................6
1.4 本章小结.................................................7
第2章 蓝牙及其协议栈概述.....................................8
2.1 蓝牙技术概述.............................................8
2.2 协议各层次功能.......................................... 9
2.2.1 核心协议..............................................10
2.2.2 选用协议..............................................11
2.3 蓝牙数据包的封装过程 ...................................12
2.4 蓝牙在病房心电监护中的应用 .............................13
2.5 本章小结................................................14
第3章心电信号原理 .........................................15
3.1 心电图的形成............................................15
3.2 心电特征波形及其意义....................................16
3.3 心电导联................................................17
3.4 心电信号的特征 .........................................18
3.5 本章小结 ...............................................19
第4章监护系统的硬件设计 ...................................19
4.1 系统原理................................................20
4.2 心电信号放大滤波电路....................................22
4.2.1 输入电路 .............................................24
4.2.2 前置放大电路..........................................24
4.2.3 后级放大电路 .........................................25
4.3 电源电路设计............................................25
4.4 控制电路设计............................................26
4.5 本章小结................................................28
第5章监护系统软件的设计 ...................................29
5.1 心电仪软件设计..........................................29
5.1.1 设计的总体思路........................................29
5.1.2 蓝牙无线通信子程序....................................30
5.2 上位机软件设计..........................................34
5.3 本章小结 ...............................................35

结论 .......................................................36
致谢....................................................... 37
参考文献................................................... 38
附录1...................................................... 39
附录2 ......................................................44

摘 要
本文利用目前已有的蓝牙模块，设计了基于蓝牙技术的无线监测系统。此项研究将先进的无线、近距离传输技术应用于动态监护仪中，使大量数据的传输由有线变为无线、实时、可移动。由病人随身携带可连续记录心电生理参数的便携式控制器，在采集的同时将数据传输到分析工作站进行数据分析和处理。它在保障病人的生命安全方面无疑是具有重要的临床使用价值。
在硬件方面，通过数据采集系统采集心电信号，经过电路把符合频率段内的心电信号送到PIC单片机中，经PIC处理通过RS232送到蓝牙发送模块，进行实时发送，在PC机端，蓝牙接收模块实时接收，并通过PC机RS232串口实时传到PC机上。
在软件方面，在PIC单片机控制端，用运行速度较快的汇编语言来进行心电信号的采集、模数转换处理、控制，在PC机端，用VB来编制心电数据显示软件，并增加了分析功能，即通过心电图的波形可以判断该心脏是否正常。
通过对心电波形特征和常用心电分析处理算法的分析和比较，采用了适合单片机运行的滤除工频干扰和心电特征参数提取算法。该系统采用无线通信测试技术，省去了繁杂的连接导线，十分便于操作者使用，节省使用空间，具有很好的市场应用前景。
本系统是在医疗监护系统中采用蓝牙技术的一个尝试，我们知道目前蓝牙技术在无线个人通讯上应用有着很好的市场前景，但医疗领域上的应用还很少，通过对本系统的测试，说明在医疗监护系统上采用蓝牙技术进行无线测试控制是可行的。

关键词  蓝牙技术    心电    数据采集   单片机控制

Abstract
In the paper,the wireless monitoring system is designed with the existingBluetooth module,which based on Bluetooth technology.Advanced technologyof wireless and close quarters transmission is used dynamic ECG telemonitorsystems which make the large volumes of data transmission from wire intowireless,and it is real-time,portable.The portable controller which are carriedby patients can continuously record physiological parameters of heart,and in thecollection of data,it also transmits data to the analysis workstation for dataanalysis and processing.It has very important clinical value in the protection ofpatients.
In terms of hardware,through the data collecting systems,the PIC micro-controller.The processed ECG signal is sent to module of Bluetooth transmission through RS232,In PC,Bluetooth module receive signals real-timely through receiving module,and transmit signals to PC through RS-232.
In term of software,to PIC micro-controller control,data collection,A/D convertion programed in assemble language with faster running-speed;To PC control,a display software of ECG data programed in visualization language VB,and it increases analytic function,which can determine whether the heart is normal through the waveform of ECG.
An ECG characteristic points detection algorithm and 50Hzfrequency digital filter was proposed for MCU.The system adopts wireless testing technology,so saves the complicated connecting-wire.It's very easy for the operator,and saves the use of space.There is a good market prospect for the application.
The system is a try of Bluetooth technology in medical telemonitor systems.As is known,Bluetooth technology have a good market prospect in application ofwireless personal communication at present,but the medical field is rarelyapplied.Through the testing of this system,speaking volumes for that applyingBluetooth technology to wireless telemonitor is feasible in medical telemonitorsystems.

Keywords  bluetooth technology   ECG   data collection  singlechip control