Wireless cardiac bioelectricity monitoring system with motion artifact elimination function

Abstract

The invention discloses a wireless electrocardiograph monitoring system with a function for eliminating motion artifacts, which comprises a first electrode RA, a second electrode LL, a signal acquisition module and an upper computer, wherein, the signal acquisition module comprises an electrocardiosignal processing circuit, an electrode skin resistance signal processing circuit and a wireless radio frequency circuit. The upper computer is connected with a coordinator and the wireless radio frequency circuit is connected with the coordinator in a wireless manner through the ZigBee technology; electrocardiosignals are extracted by the electrocardiosignal processing circuit and sent to the wireless radio frequency circuit. The electrode skin resistance signal processing circuit is used for extracting electrode skin resistance signals and then sending the skin resistance signals to the wireless radio frequency circuit which is used for sending the electrocardiosignals and the electrode skin resistance signals to the upper computer. The upper computer adopts the electrode skin resistance signals as reference signals and the electrocardiosignals as the main input signals, and outputs the electrocardiosignals without any interference from the motion artifacts after the signals are processed by a self-adapting filtering algorithm.

Description

technical field [0001] The invention belongs to the field of medical electronic equipment, in particular to an electrocardiographic monitoring system. Background technique [0002] In the monitoring process or stress test of the Holter monitor, motion artifact is a very serious source of noise interference, usually caused by breathing or human movement, which will cause baseline drift in the detected ECG signal and affect the ECG signal The stability and reliability of the alarm will cause the alarm to send out wrong alarm signals, which is not conducive to the doctor's timely diagnosis and treatment of the patient's health status. When the interference is serious, the doctor may even make wrong treatment decisions, threatening the patient's life safety. In the existing ECG monitoring system, the resistance-capacitance coupling high-pass filter circuit in the ECG signal acquisition hardware circuit is used to isolate the DC signal, thereby eliminating the baseline drift of t...

AI Technical Summary

Problems solved by technology

[0002] In the monitoring process or stress test of the Holter monitor, motion artifact is a very serious source of noise interference, usually caused by breathing or human movement, which will cause baseline drift in the detected ECG signal and affect the ECG signal The stability and reliability of the alarm will cause the alarm to send out wrong alarm signals, which is not conducive to the timely diagnosis and treatment of the patient's health by the doctor. When the interference is serious, it will even cause the doctor to make a wrong treatment decision, threatening the patient's life safety.

In the existing ECG monitoring system, the resistance-capacitance coupling high-pass filter circuit in the ECG signal acquisition hardware circuit is used to isolate the DC signal, thereby eliminating the baseline drift of the ECG signal caused by low-frequency interference such as DC signal or human breathing. , and when the monitored patient is in daily life or doing a moderate amount of outdoor exercise, the collected ECG signal will be disturbed by a lot of exercise, which will cause more serious baseline drift in the ECG signal, resulting in The baseline drift phenomenon cannot be eliminated by a simple resistance-capacitance coupling circuit

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