Principle of Doppler Fetal Heart Rate Instrument: Fetal heart rate instrument, also known as fetal heart rate instrument, has the same principle as medical monitoring equipment for fetal heart rate during pregnancy examination: amplifying the fetal heart rate through Doppler effect, Doppler fetal heart rate instrument uses Doppler ultrasound technology, that is, transmitting and receiving echo signals to the fetus for examination through the characteristics of ultrasound (directionality, reflection, attenuation, resolution, penetration, etc.). Enable medical staff and pregnant parents to hear the sound of fetal heartbeat more clearly and accurately, and use electronic devices to achieve scientific functions such as counting and recording fetal heart rate. Monitor the fetal heart, monitor the fetal heart condition, determine if there are any abnormalities in the fetal heart condition, and take corresponding measures in a timely manner. Intelligent fetal heart rate instrument functions:

1. Check fetal heart sounds.

2. After processing, restore the fetal heart rate signal received by the ultrasound probe through the horn device.

3. Check the fetal heart rate chart.

After connecting the pregnant woman's intelligent fetal heart rate monitor with the APP software, it helps pregnant women record daily fetal movements and fetal heart rate information through 'log' and other recording functions, and stores it in a microcomputer to facilitate pregnant women's query of fetal heart rate.

Share synthetic music on WeChat.

Through one click sharing on the phone, the software can also combine a baby's fetal heart sound with any song to form music, set as a phone ringtone, or like a baby's lullaby after birth. The research results indicate that hypnotic music, based on fetal heart sounds, has a significant hypnotic effect on newborns' sleep compared to other types of music.

The above is the development plan for Tuyang Technology's fetal heart device, which is a low-power solution that is easy to produce.