Anti-interference design of electrocardiogram monitor based on embedded technology
The electrocardiogram monitoring system has great value in important fields such as medical clinical practice,pilot selec-tion,and exercise health.However,due to issues such as high-frequency interference and power frequency interference,the turning point and recognition of electrocardiogram signals are difficult.The study conducted a detailed analysis of electrocardiogram noise and the spectrum of the electrocardiogram signal itself,and conducted electrocardiogram noise preprocessing.The research adopts an LMS filter with adaptive step size,which can automatically adjust according to the intensity of noise.The experiment was conducted within the range of 0 to 1 200 data points on the horizontal axis,with low-frequency amplitudes ranging from-4 to 2 and high-frequency am-plitudes ranging from-1 to 1.After the frequency rises to 400 MHz,the field strength rapidly decreases and finally reaches 1000 MHz,with a minimum field strength of 11.4 V/m and an average field strength of 31.35 V/m.Through denoising processing,electrocardio-gram signals can be more accurately monitored and analyzed,providing more accurate data support for medical clinical practice,pilot selection,and sports health,while also providing more convenient medical monitoring and living conditions for patients.
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