| 摘要 |
A signal evaluation method for detecting QRS complexes in electrocardiogram (ECG) signals comprises the following steps: sampling of the ECG signal ( 4 ) and conversion into discrete signal values (x(n)) in chronological order; comparing the signal values (x<SUB>f</SUB>(n), x<SUB>fq</SUB>(n)) to a threshold function (K(n)) adaptively determined therefrom; determining a frequency number (D(n)) within a defined segment of the consecutive signal values, by which signal values (x<SUB>f</SUB>(n), x<SUB>fq</SUB>(n)) preferably fall short of the threshold function (K(n)); comparing the determined frequency number (D(n)) to a defined threshold (Theta), wherein an undershoot of the threshold (Theta) is significant for apresence of a QRS complex ( 5, 6, 7 ) in the defined segment of the ECG signal ( 4 ).
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