ЧЭН, Лимэй (NL),КАРЛСОН, Эрик Томас (NL),ВАЙРАВАН, Сринивасан (NL),СЮЙ, Миньнань (NL)
申请号：
RU2016113329
公开号：
RU2016113329A
申请日:
2014.08.20
申请国别(地区):
RU
年份:
2017
代理人:
摘要：
System (10) for extracting a fetal heart rate from at least one maternal signal using a computer processor (26). The system includes sensors (12-18)attached to a patient to receive abdominal ECG signals and a recorder and digitizer (20)to record and digitize each at least one maternal signal in a maternal signal buffer (22A-22D). The system further includes a peak detector (40) to identify candidate peaks in the maternal signal buffer. The signal stacker (42)of the system stacks the divides at least one maternal signal buffer into a plurality of snippets, each snippet including one candidate peak and a spatial filter (44)to identify and attenuate a maternal QRS signal in the plurality of snippets of the maternal signal buffer, the spatial filter including at least one of principal component analysis and orthogonal projection, to produce a raw fetal ECG signal which is stored in a raw fetal ECG buffer. The system further includes a fetal QRS identifier(46)for identifying peaks in the raw fetal ECG buffer by at least one of principal component analysis and a peak-detector followed by rule based fQRS extraction and a merger (48)to calculate and merge the fetal heart rate from the identified peaks.
