MUMBAI, India, May 1 -- Intellectual Property India has published a patent application (202641049213 A) filed by Sona College Of Technology, Salem, Tamil Nadu, on April 17, for 'fpga-based real-time fetal heart sound detection system.'
Inventor(s) include Dr. C. M. Kalaiselvi; Aashiq Mohamed R; and Benita Mary W.
The application for the patent was published on May 1, under issue no. 18/2026.
According to the abstract released by the Intellectual Property India: "The present invention relates to a real-time fetal phonocardiogram (PCG) processing system implemented using a programmable logic device for continuous fetal heart sound monitoring. The system comprises an acoustic sensing unit, signal conditioning circuitry, analog-to-digital conversion, adaptive noise cancellation, band-pass digital filtering, envelope extraction, peak detection, interval computation, feature extraction, and classification modules integrated within a parallel hardware architecture. Maternal cardiac components and abdominal noise are suppressed using an adaptive filtering stage, followed by isolation of fetal heart frequency components through finite impulse response filtering. S1 and S2 heart sounds are identified using amplitude threshold and temporal validation logic, and beat-to-beat intervals are computed using a synchronized timing counter. Extracted parameters including fetal heart rate and interval variability are analyzed to generate a normal or abnormal cardiac status output. The architecture provides deterministic low-latency processing suitable for portable, continuous, and radiation-free fetal monitoring applications in clinical and remote healthcare environments."
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