A Real-Time Sleep Monitoring System with a Smartphone

Recently, health care service is not only considered as a business, but also a wellness service offered by the public sector. In the past, the health care focuses on primary care, specialty care, and emergency treatment. In the present, the goal of the current health care is disease prevention and wellness. Today, home health care is one of the fastest-growing categories of health care services. Although home health care services respond to the needs of the cognitively impaired for help with ADL and IADL impairments, sleep-related problems in physiology have increased due to absence of physical diagnosis skills. In this paper, we propose a real-time sleep monitoring system that analyzes the sleep state using obtained signals from multiple sensors. The proposed system collects various signals including ECG, orientation, audio, acceleration signals in real time. From the signals, the system analyzes the sleep quality, the sleep apnea, and stroke. In the experiments, the proposed system shows the estimation results of heart rate, respiratory rate, obstructive sleep apnea, and stroke diagnosis.