We developed a household passive wireless fetal heart sound monitoring system for pregnant women. The system includes three parts: Fetal heart sound acquiring device (wearable smart sensor), APPs on smart phone & PC, Remote data center. The system can acquire and store weak fetal heart sound signal. The data stored will be transmitted to smart phone through Bluetooth or to PC through USB. The fetal heart sound can be played on smart phone or PC, and also, the fetal heart phonocardiogram can be displayed in real time on smart phone or PC. The data transmitted to PC or smart phone can be uploaded to remote data center (servers) automatically. There are no similar systems in China, and our research stays at the domestic leading and international advanced level.
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（a）Version 1.0
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（b）Version 2.0
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Figure1. Wireless fetal heart acquiring device
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(a) Profile
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(b) Advanced functions
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(c) Display the phonocardiogram in real time
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Figure2. Dedicated APP for smart phone (Android)
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(a) Login
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(b) Synchronize data
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(c) Historical health report
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(d) Advanced settings
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(e) Dynamical waveform
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Figure3. Dedicated APP for PC
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Patents:
[1] “Fetal heart monitoring equipment ”《胎心监测设备》(Patent No. : 201210370905.9)
[2] “A dual microphone apparatus and method to eliminate noise in medical acoustic signal ”《一种医学声信号的双麦克风消噪方法及装置》(Patent No. 201310482125.8)
[3] “Bowel sound monitoring and recognition system ”《肠鸣音监测识别系统》(Patent No. 201410559667.5)