Acquisition And Processing Of High Frequency ECG Signal

Electrocardiograph as an important basis for heart disease diagnosis,its frequency range affects the accuracy of diagnosis.The frequency range of the conventional cardiac motor is about 40 HZ,and the precision electrocardiograph is not more than 100 HZ,that is,the low frequency component of the ECG signal can be recorded,and the high frequency components in the ECG signal will be filtered out.The high frequency components of ECG are of great importance in the diagnosis of some special heart diseases.This paper discusses the extension of the frequency range in the process of ECG acquisition and the extraction of high-frequency components in ECG signals.Based on the characteristics of high frequency ECG signal,this paper designs a system of collecting high frequency ECG signals with combining the characteristics of MCU STM32F103 and wireless communication technology.The main contents of the paper include the following aspects.The paper presents a hardware design for collecting high frequency ECG signals combining broadband high gain amplifier and microcontroller STM32F103.The high frequency ECG data are processed on the basis of software system design,including waveform display,smooth filtering and feature point characterization.At last,the high frequency ECG signal is compared with the conventional ECG signal.