Infant Sleep Device Using Real-Time Maternal Heartbeat Audio

The patent implements dynamic sound generation by capturing the mother's real-time heartbeat through a sensor, processing it to extract rhythmic patterns, and replaying it through a speaker. This transforms the fixed, static sound output into a dynamic system that adapts to the mother's actual physiological state, thereby significantly improving the effectiveness of pacifying the infant while maintaining reasonable device complexity through modular design

The patent creates a copy of the mother's heartbeat sound by sensing her actual cardiac rhythm and reproducing it through the device's speaker. This copied biological signal serves as the soothing sound for the infant, replacing traditional fixed-frequency artificial sounds. The copying approach naturally mimics the familiar maternal heartbeat that infants are accustomed to in utero, enhancing pacifying effectiveness without requiring complex algorithmic generation of artificial heartbeats

The patent employs a microcontroller unit that performs multiple functions: it controls the speaker output, processes the heart rate data, manages power consumption, and coordinates sensor operations. By consolidating these diverse functions into a single multi-functional controller, the patent achieves personalized adaptive sound output without proportionally increasing overall device complexity, as the same hardware resource serves multiple purposes

The patent replaces complex mechanical or algorithmic generation of heartbeat sounds with electronic sensing and digital signal processing. Instead of using mechanical oscillators or pre-programmed sequences to simulate heartbeats, the system uses electronic sensors to capture actual heart rate data and digitally processes it for playback. This substitution reduces mechanical complexity while enabling personalized adaptability through electronic control