Ecg Analysis System Based On Sopc Design And Realization

In order to meet the practical requirements such as micromation, real-time processing, high-speed sampling and large memory capacity, this thesis introduces an ECG detection and analysis system based on SOPC. It integrates the functions of DSP and MCU to a single chip of FPGA. Multi-channel ECG signals can be processed by FPGA and long-playing ECG data can be stored to a SD card. Besides, it can provide real-time analysis of ECG signals and timely warning for cardiac arrhythmia.In the thesis, firstly, we proposed the method using FPGA to realize the digital signal processing algorithm for ECG, which includes these designs of low pass filter, comb filter, and the FPGA module for calculating the heart rate. The algorithm uses the advantage of parallel data processing of the FPGA to complete the parallel processing and analyzing for multi-channel ECG data.Secondly, we gave the design plan based on Avalon Bus customized from the peripheral equipment, and achieved the control of data acquisition, the processing of data and the module of LCD control instrument. We made the acquisition control for multi-channel data and the module for digital signal processing integrate into a synchronous circuit module, which can not only enhance the ability of parallel processing of multi-channel data, but also increase the reliability of the control circuit.Finally, we added all the functional modules which have been achieved and other external interfaces to the Avalon Bus, so that they can constitute an embedded system based on Nios II processor. Through it, we can make use of the flexible human and computer interactive function of Nios II processor to complete the whole system workflow control of data acquisition, transmission, storage, communication, display, etc. For the communication transmission between the system and computer, we proposed the transmission protocol based on the multi-channel ECG signal of the serial communication and the heart rate data, and achieved the processing workflow of communication protocols in the software.