System for monitoring heart rate of fetus in mother body

Abstract

The invention discloses a system for monitoring a heart rate of a fetus in a mother body. The system comprises a signal acquisition module, a signal preprocessing module, a signal quality evaluation module, a maternal ECG extraction module, a maternal heart rate detection module, a maternal ECG suppression module, a fetal ECG extraction module, a fetal heart rate detection module and a result output module. The signal acquisition module collects electrical signals of the abdomen of a pregnant woman, the signal preprocessing module removes power frequency, baseline drift and myoelectric interference, the signal quality evaluation module eliminates low-quality signals, the maternal ECG extraction module and the maternal heart rate detection module calculate the maternal heart rate, the maternal ECG suppression module, the fetal ECG extraction module and the fetal heart rate detection module calculate the fetal heart rate, and the result output module simultaneously outputs the maternal heart rate and the fetal heart rate. The system eliminates the low-quality signals in the monitoring process and fully suppresses noise signals before detection of the fetal heart rate, can accuratelyextract the fetal heart rate with fewer ECG leads, and meets the need of clinical long-term fetal heart monitoring.

Description

technical field [0001] The invention belongs to the technical field of electrocardiographic data processing, and in particular relates to a system for monitoring the heart rate of a mother and a fetus. Background technique [0002] Electronic fetal heart monitoring (EFM) is currently an important method to understand the situation of the fetus in utero and the reserve capacity of the fetus. Using the fetal heart rate monitoring curve to judge whether there is ischemia and hypoxia in the uterus and the activity of the fetal central nervous system provide an important basis for clinical judgment of perinatal prognosis and guidance of treatment. According to the time of application, it is divided into prenatal and intrapartum fetal heart rate monitoring. Prenatal monitoring is mostly non-stress test (NST), which refers to observing and recording the fetal heart rate of the fetus in the prenatal monitoring, that is, under the condition of no uterine contraction and no external ...

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Problems solved by technology

However, the shortcomings of this scheme are: Probabilistic independent component analysis theoretically requires that the number of observed variables is greater than or equal to the number of independent variables, this scheme does not f...

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