基于藍牙技術的心電動態監護系統的研究

電子機電論文編號:JD103   附開題報告,任務書,大圖,字數:28693,頁數:57

目 錄
摘要 .......................................................I
Abstract ...................................................II

第1章緒論 ..................................................1
1.1 課題背景 ................................................1
1.1.1 心血管疾病狀況.........................................1
1.1.2 動態心電監護的發展 ....................................1
1.1.3 無線監護技術.......................................... 2
1.1.4 課題研究的目的及意義 ..................................3
1.2 藍牙技術發展及應用.......................................5
1.2.1 藍牙技術的發展........................................ 5
1.2.2 藍牙技術的特點 ........................................5
1.3 課題研究的目的及意義.....................................6
1.4 本章小結.................................................7
第2章 藍牙及其協議棧概述.....................................8
2.1 藍牙技術概述.............................................8
2.2 協議各層次功能.......................................... 9
2.2.1 核心協議..............................................10
2.2.2 選用協議..............................................11
2.3 藍牙數據包的封裝過程 ...................................12
2.4 藍牙在病房心電監護中的應用 .............................13
2.5 本章小結................................................14
第3章心電信號原理 .........................................15
3.1 心電圖的形成............................................15
3.2 心電特征波形及其意義....................................16
3.3 心電導聯................................................17
3.4 心電信號的特征 .........................................18
3.5 本章小結 ...............................................19
第4章監護系統的硬件設計 ...................................19
4.1 系統原理................................................20
4.2 心電信號放大濾波電路....................................22
4.2.1 輸入電路 .............................................24
4.2.2 前置放大電路..........................................24
4.2.3 后級放大電路 .........................................25
4.3 電源電路設計............................................25
4.4 控制電路設計............................................26
4.5 本章小結................................................28
第5章監護系統軟件的設計 ...................................29
5.1 心電儀軟件設計..........................................29
5.1.1 設計的總體思路........................................29
5.1.2 藍牙無線通信子程序....................................30
5.2 上位機軟件設計..........................................34
5.3 本章小結 ...............................................35

結論 .......................................................36
致謝....................................................... 37
參考文獻................................................... 38
附錄1...................................................... 39
附錄2 ......................................................44

摘 要
本文利用目前已有的藍牙模塊，設計了基于藍牙技術的無線監測系統。此項研究將先進的無線、近距離傳輸技術應用于動態監護儀中，使大量數據的傳輸由有線變為無線、實時、可移動。由病人隨身攜帶可連續記錄心電生理參數的便攜式控制器，在采集的同時將數據傳輸到分析工作站進行數據分析和處理。它在保障病人的生命安全方面無疑是具有重要的臨床使用價值。
在硬件方面，通過數據采集系統采集心電信號，經過電路把符合頻率段內的心電信號送到PIC單片機中，經PIC處理通過RS232送到藍牙發送模塊，進行實時發送，在PC機端，藍牙接收模塊實時接收，并通過PC機RS232串口實時傳到PC機上。
在軟件方面，在PIC單片機控制端，用運行速度較快的匯編語言來進行心電信號的采集、模數轉換處理、控制，在PC機端，用VB來編制心電數據顯示軟件，并增加了分析功能，即通過心電圖的波形可以判斷該心臟是否正常。
通過對心電波形特征和常用心電分析處理算法的分析和比較，采用了適合單片機運行的濾除工頻干擾和心電特征參數提取算法。該系統采用無線通信測試技術，省去了繁雜的連接導線，十分便于操作者使用，節省使用空間，具有很好的市場應用前景。
本系統是在醫療監護系統中采用藍牙技術的一個嘗試，我們知道目前藍牙技術在無線個人通訊上應用有著很好的市場前景，但醫療領域上的應用還很少，通過對本系統的測試，說明在醫療監護系統上采用藍牙技術進行無線測試控制是可行的。

關鍵詞  藍牙技術    心電    數據采集   單片機控制

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