Development of a fuzzy rule-based QRS detection algorithm for fetal and maternal heart rate monitoring

Signal processing problems related to abdominal-lead fetal ECG include the cancellation of the maternal QRS complex, signal enhancement of the fetal QRS complex and detection of the presence of a fetal R-wave to compute the fetal heart rate. This paper describes an improved scheme for detecting the presence of the QRS complexes from the enhanced fetal ECG signal obtained by using a fuzzy decision algorithm. The decision method identifies maternal and fetal ECG from maternal abdominal recordings