基于DSP的心電監(jiān)測系統(tǒng)的研究與設(shè)計
發(fā)布時間：2019-05-27 20:54
【摘要】：一直以來，心臟疾病作為威脅人類健康的主要疾病之一，其診斷和防治已成為醫(yī)學(xué)界面臨的主要問題。能為心臟疾病的診斷治療做出參考依據(jù)的心電信號是一種典型的生物信號，從不同方面和層次上反映了心臟的生理狀態(tài)，因此心電信號的采集和分析研究對心臟疾病的臨床診斷和治療具有非常重要的價值。采集分析心電信號的心電圖機，目前已有很多的技術(shù)和設(shè)備,但大多數(shù)因其處理能力、體積、費用、功耗等方面還不盡人意，所以開發(fā)便攜式、智能化的心電監(jiān)測系統(tǒng)具有重要意義。 本文設(shè)計了基于TMS320VC5509A的心電采集分析系統(tǒng)。在深入系統(tǒng)研究心電信號基礎(chǔ)理論、DSP技術(shù)相關(guān)知識、自適應(yīng)濾波理論與應(yīng)用和C++相關(guān)知識后，選用高性能的TMS320VC5509A處理器作為中央處理單元，設(shè)計了心電信號采集系統(tǒng)、基于TMS320VC5509A的心電信號處理系統(tǒng)和基于PC機的心電信號管理系統(tǒng)。心電信號前級采集和調(diào)理系統(tǒng)包括輸入保護電路、前置放大及右腿驅(qū)動電路、帶通濾波電路、50Hz陷波電路、主放大及電平抬升電路和電源電路；基于TMS320VC5509A的心電信號處理系統(tǒng)主要包括電源電路、A/D轉(zhuǎn)換、存儲器擴展電路和串口通信電路，主要實現(xiàn)對心電信號的采集、數(shù)字濾波和傳輸；基于PC機的心電信號處理系統(tǒng)主要設(shè)計了基于VC++心電信號分析系統(tǒng)，可實現(xiàn)對心電信號的讀取、顯示、存儲、回放等分析和處理。 軟件系統(tǒng)在CCS集成開發(fā)環(huán)境下用C語言來編程，采用模塊化編程方式。主程序?qū)Ω鱾�子程序調(diào)用和組織，使整個系統(tǒng)能協(xié)調(diào)工作。子程序主要包括系統(tǒng)初始化程序、ADC程序、數(shù)字信號處理程序、PC機應(yīng)用程序等。關(guān)鍵部分是數(shù)字信號處理算法，算法是否合適關(guān)系到整個系統(tǒng)的精度和實時性。本文首先使用Matlab工具，應(yīng)用數(shù)字信號處理算法對標準心電信號進行了仿真驗證，然后通過C語言和匯編語言混合編程在DSP上實現(xiàn)信號處理算法，有效的抑制了噪聲和干擾。 通過仿真和現(xiàn)場試驗，本文設(shè)計的基于TMS320VC5509A的心電監(jiān)測系統(tǒng)能成功采集、傳輸、存儲和顯示心電信號，，對心電信號能進行簡單的分析和處理。
[Abstract]:For a long time, as one of the main diseases threatening human health, the diagnosis and prevention of heart disease has become the main problem faced by the medical profession. ECG signal, which can be used as a reference for the diagnosis and treatment of heart disease, is a typical biological signal, which reflects the physiological state of the heart from different aspects and levels. Therefore, the collection and analysis of ECG signals is of great value in the clinical diagnosis and treatment of heart diseases. At present, there are a lot of technologies and equipment for collecting and analyzing ECG signals, but most of them are not satisfactory in terms of processing capacity, volume, cost, power consumption and so on, so the development of portable machines. Intelligent ECG monitoring system is of great significance. In this paper, a ECG acquisition and analysis system based on TMS320VC5509A is designed. After deeply and systematically studying the basic theory of ECG signal, DSP technology related knowledge, adaptive filtering theory and application and C related knowledge, the high performance TMS320VC5509A processor is selected as the central processing unit, and the ECG signal acquisition system is designed. ECG signal processing system based on TMS320VC5509A and ECG signal management system based on PC. The front stage acquisition and conditioning system of ECG signal includes input protection circuit, preamplifier and right leg drive circuit, band-pass filter circuit, 50Hz notch circuit, main amplifier and level lifting circuit and power supply circuit. The ECG signal processing system based on TMS320VC5509A mainly includes power supply circuit, A / D conversion, memory expansion circuit and serial communication circuit, which mainly realizes ECG signal acquisition, digital filtering and transmission. The ECG signal processing system based on PC mainly designs the ECG signal analysis system based on VC, which can realize the analysis and processing of ECG signal reading, display, storage, playback and so on. The software system is programmed in C language and modular programming in CCS integrated development environment. The main program calls and organizes each subprogram so that the whole system can coordinate its work. The subroutine mainly includes system initialization program, ADC program, digital signal processing program, PC application program and so on. The key part is the digital signal processing algorithm, whether the algorithm is suitable or not is related to the accuracy and real-time performance of the whole system. In this paper, the standard ECG signal is simulated and verified by using Matlab tool and digital signal processing algorithm, and then the signal processing algorithm is implemented on DSP by mixed programming with C language and assembly language, which effectively suppresses noise and interference. Through simulation and field test, the ECG monitoring system based on TMS320VC5509A can successfully collect, transmit, store and display ECG signals, and can simply analyze and process ECG signals.
【學(xué)位授予單位】：西北師范大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2012
【分類號】：R318.0
本文編號：2486470
[Abstract]:For a long time, as one of the main diseases threatening human health, the diagnosis and prevention of heart disease has become the main problem faced by the medical profession. ECG signal, which can be used as a reference for the diagnosis and treatment of heart disease, is a typical biological signal, which reflects the physiological state of the heart from different aspects and levels. Therefore, the collection and analysis of ECG signals is of great value in the clinical diagnosis and treatment of heart diseases. At present, there are a lot of technologies and equipment for collecting and analyzing ECG signals, but most of them are not satisfactory in terms of processing capacity, volume, cost, power consumption and so on, so the development of portable machines. Intelligent ECG monitoring system is of great significance. In this paper, a ECG acquisition and analysis system based on TMS320VC5509A is designed. After deeply and systematically studying the basic theory of ECG signal, DSP technology related knowledge, adaptive filtering theory and application and C related knowledge, the high performance TMS320VC5509A processor is selected as the central processing unit, and the ECG signal acquisition system is designed. ECG signal processing system based on TMS320VC5509A and ECG signal management system based on PC. The front stage acquisition and conditioning system of ECG signal includes input protection circuit, preamplifier and right leg drive circuit, band-pass filter circuit, 50Hz notch circuit, main amplifier and level lifting circuit and power supply circuit. The ECG signal processing system based on TMS320VC5509A mainly includes power supply circuit, A / D conversion, memory expansion circuit and serial communication circuit, which mainly realizes ECG signal acquisition, digital filtering and transmission. The ECG signal processing system based on PC mainly designs the ECG signal analysis system based on VC, which can realize the analysis and processing of ECG signal reading, display, storage, playback and so on. The software system is programmed in C language and modular programming in CCS integrated development environment. The main program calls and organizes each subprogram so that the whole system can coordinate its work. The subroutine mainly includes system initialization program, ADC program, digital signal processing program, PC application program and so on. The key part is the digital signal processing algorithm, whether the algorithm is suitable or not is related to the accuracy and real-time performance of the whole system. In this paper, the standard ECG signal is simulated and verified by using Matlab tool and digital signal processing algorithm, and then the signal processing algorithm is implemented on DSP by mixed programming with C language and assembly language, which effectively suppresses noise and interference. Through simulation and field test, the ECG monitoring system based on TMS320VC5509A can successfully collect, transmit, store and display ECG signals, and can simply analyze and process ECG signals.
【學(xué)位授予單位】：西北師范大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2012
【分類號】：R318.0
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