Adaptive SpO2 Measurement Interval Control for Sleep Apnea Detection

The patent implements periodic measurement action by adjusting the SpO2 measurement interval dynamically based on detected behavior states. During sleeping periods when sleep apnea events are most relevant, measurements are performed at shorter intervals (e.g., every 1-5 minutes) to ensure accurate detection of apneas and hypopneas. During awake periods, measurements are performed at longer intervals or skipped entirely, significantly reducing power consumption while maintaining diagnostic accuracy for SAS events.

The patent applies dynamics by making the measurement interval adaptive rather than fixed. The system continuously monitors behavior state through motion sensors and other biological parameters, then dynamically adjusts the SpO2 measurement interval in real-time. When the user transitions to a sleeping state, the system automatically shortens the measurement interval to capture potential apnea events. When the user is awake or engaged in activities, the interval is extended, optimizing the balance between detection precision and time efficiency.

The patent implements feedback control by using detected behavior state information to regulate future SpO2 measurement timing. The system creates a closed-loop control mechanism where motion sensors, behavioral analysis algorithms, and SpO2 measurements continuously interact. The behavior state determination unit analyzes motion patterns and other parameters to infer sleeping vs. awake states, then feeds this information back to the measurement control unit, which adjusts the measurement schedule accordingly. This feedback mechanism automates the optimization process, reducing the need for complex manual configuration while maintaining high diagnostic accuracy.