A method for quickly resetting the baseline of ECG waveform

Abstract

The invention provides a rapid resetting method for an electrocardiogram waveform baseline, which is applied to an electrocardiogram machine. The rapid resetting method is characterized by comprising the following steps: setting an RC high-pass circuit on each acquisition channel of an electrocardiogram signal, wherein the RC high-pass circuit comprises a resistor R1 and a capacitor C1, the capacitor C1 is provided with a first end connected with a front-grade circuit and a second end connected with a rear-grade circuit, the resistor R1 is connected between the second end and a ground end of the capacitor C1, a resistor R0 is arranged beside the resistor R1, the resistance value of the resistor R0 is smaller than that of the resistor R1, one end of the resistor R0 is connected with the second end of the capacitor C1, and the other end of the resistor R0 is connected with one channel pin of a multiplexer; when finding that the electrocardiogram waveform baseline is deviated and exceeds a pre-set threshold value, setting a control pin of the multiplexer as a high electric level by a processor, and enabling the resistor R0 to be grounded, thus rapidly discharging the capacitor C1 and rapidly resetting the electrocardiogram waveform baseline; after finding that the electrocardiogram waveform baseline is reset, setting the control pin of the multiplexer as a low electric level by the processor, and enabling the resistor R0 to be suspended.

Description

technical field [0001] The invention relates to a method for quickly resetting the baseline of the electrocardiogram waveform. Background technique [0002] The electrocardiogram machine is a physiological function detection instrument that records the waveform of the heart's bioelectric activity (ie, the electrocardiogram). It can provide basic information for the diagnosis and treatment of various heart diseases, help analyze and understand various arrhythmias, and diagnose various cardiovascular diseases. It helps to understand pathology such as certain drugs and electrolyte disturbances and the impact of acid-base imbalances on the myocardium, so the electrocardiogram machine plays an important role in the examination of heart disease. In the process of using the electrocardiograph, the rapid output of the patient's ECG report is very important, especially in large-scale physical examinations, the rapid output of the ECG report can save the patient's ECG examination time...

AI Technical Summary

Problems solved by technology

[0006] (2) Since the capacitor is still charged, the DC voltage generated by the capacitor is superimposed on the ECG waveform, which may make the post-amplification circuit work at the edge of the range or out of range

[0008] (4) By enabling the software filter, the ECG waveform can be quickly reset, which cannot meet the low-frequency characteristic requirements of the electrocardiogram machine industry standard YY1139-2013 (when the product performs low-frequency characteristic detection, the software filter is generally saved in the off state)

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