A method of filtering ECG signal to remove ringing

Abstract

The invention discloses a method for filtering electrocardiographic signals for removing ringing, which comprises the following steps: step S1, collecting original electrocardiographic signals, and identifying abrupt segments in the original electrocardiographic signals; step S2, intercepting the abrupt segments to obtain For the sudden change signal, the sudden change segment in the original ECG signal is replaced by a replacement segment to obtain a replacement signal; step S3, performing power frequency filtering on the sudden change signal and the replacement signal respectively, to obtain a sudden change filter signal and a replacement filter signal; step S4 . Splicing the mutation filter signal and the replacement filter signal to obtain a complete ECG filter signal. The invention can effectively remove the ringing phenomenon in the electrocardiographic filtering process.

Description

technical field

[0001] The invention relates to the technical field of electrocardiographic signal filtering, in particular to an electrocardiographic signal filtering method for removing ringing. Background technique

[0002] Compared with the power frequency interference of the power grid, the ECG signal is extremely weak. Filtering out power frequency interference is an important problem to be solved in ECG signal processing. At present, digital filtering technology has been widely used in the processing of power frequency interference, but the existing digital notch filter often produces "ringing" phenomenon when filtering power frequency interference, which affects the analysis and processing of data. accuracy. When the ECG signal undergoes a sudden change, after passing through a power frequency filter, such as a 50Hz or 60Hz notch filter, there will be a signal phenomenon of oscillation back and forth after the sudden change, which is called ringing phenomenon in EC...

Examples

Embodiment 1

[0013] like figure 1 As shown, Embodiment 1 of the present invention provides a method for filtering ECG signals for removing ringing, comprising the following steps:

[0014] Step S1, collecting the original ECG signal, and identifying the sudden change in the original ECG signal;

[0015] Step S2, intercepting the mutation segment to obtain a mutation signal, and replacing the mutation segment in the original ECG signal with a replacement segment to obtain a replacement signal;

[0016] Step S3, performing power frequency filtering on the sudden change signal and the replacement signal respectively, to obtain a sudden change filter signal and a replacement filter signal;

[0017] Step S4, splicing the mutation filter signal and replacement filter signal to obtain a complete ECG filter signal.

[0018] The original ECG signal sig_ori is collected by an electrocardiograph or other ECG acquisition equipment, and the sampling rate of the original ECG signal sig_ori in this emb...

Embodiment 2

[0041] Embodiment 2 of the present invention provides a computer storage medium on which a computer program is stored. When the computer program is executed by a processor, the method for filtering ECG signals for removing ringing described in any of the above embodiments is implemented.

[0042] The computer storage medium provided by the present invention is used to realize the above-mentioned electrocardiographic signal filtering method for removing ringing. Therefore, the technical effects of the above-mentioned electrocardiographic signal filtering method for removing ringing are also provided by the computer storage medium, and are not repeated here. repeat.

technical field

[0001] The invention relates to the technical field of electrocardiographic signal filtering, in particular to an electrocardiographic signal filtering method for removing ringing. Background technique

[0002] Compared with the power frequency interference of the power grid, the ECG signal is extremely weak. Filtering out power frequency interference is an important problem to be solved in ECG signal processing. At present, digital filtering technology has been widely used in the processing of power frequency interference, but the existing digital notch filter often produces "ringing" phenomenon when filtering power frequency interference, which affects the analysis and processing of data. accuracy. When the ECG signal undergoes a sudden change, after passing through a power frequency filter, such as a 50Hz or 60Hz notch filter, there will be a signal phenomenon of oscillation back and forth after the sudden change, which is called ringing phenomenon in EC...

Examples

Embodiment 1

[0013] like figure 1 As shown, Embodiment 1 of the present invention provides a method for filtering ECG signals for removing ringing, comprising the following steps:

[0014] Step S1, collecting the original ECG signal, and identifying the sudden change in the original ECG signal;

[0015] Step S2, intercepting the mutation segment to obtain a mutation signal, and replacing the mutation segment in the original ECG signal with a replacement segment to obtain a replacement signal;

[0016] Step S3, performing power frequency filtering on the sudden change signal and the replacement signal respectively, to obtain a sudden change filter signal and a replacement filter signal;

[0017] Step S4, splicing the mutation filter signal and replacement filter signal to obtain a complete ECG filter signal.

[0018] The original ECG signal sig_ori is collected by an electrocardiograph or other ECG acquisition equipment, and the sampling rate of the original ECG signal sig_ori in this emb...

Embodiment 2

[0041] Embodiment 2 of the present invention provides a computer storage medium on which a computer program is stored. When the computer program is executed by a processor, the method for filtering ECG signals for removing ringing described in any of the above embodiments is implemented.

[0042] The computer storage medium provided by the present invention is used to realize the above-mentioned electrocardiographic signal filtering method for removing ringing. Therefore, the technical effects of the above-mentioned electrocardiographic signal filtering method for removing ringing are also provided by the computer storage medium, and are not repeated here. repeat.

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