Paalasmaa Joonas, Waris Mikko, Toivonen Hannu, Leppäkorpi Lasse, Partinen Markku
Department of Computer Science, University of Helsinki, Helsinki, Finland.
Annu Int Conf IEEE Eng Med Biol Soc. 2012;2012:3784-8. doi: 10.1109/EMBC.2012.6346791.
We describe an online sleep monitoring service, based on unobtrusive ballistocardiography (BCG) measurement in an ordinary bed. The novelty of the system is that the sleep tracking web application is based on measurements from a fully unobtrusive sensor. The BCG signal is measured with a piezoelectric film sensor under the mattress topper, and sent to the web server for analysis. Heart rate and respiratory variation, activity, sleep stages, and stress reactions are inferred based on the signal. The sleep information is presented to the user along with measurements of the sleeping environment (temperature, noise, luminosity) and user-logged tags (e.g. stress, alcohol, exercise). The approach is designed for long-term use at home, allowing users to follow the development of their sleep over months and years. The service has also a medical use, as sleep disorder patients can be measured for long periods before and after interventions.
我们描述了一种在线睡眠监测服务，它基于在普通床上进行的非侵入式心冲击图（BCG）测量。该系统的新颖之处在于，睡眠跟踪网络应用程序基于来自完全非侵入式传感器的测量数据。BCG信号通过床垫上层的压电薄膜传感器进行测量，并发送到网络服务器进行分析。基于该信号推断心率和呼吸变化、活动、睡眠阶段以及压力反应。睡眠信息会与睡眠环境（温度、噪音、亮度）测量值以及用户记录的标签（如压力、酒精、运动）一起呈现给用户。该方法旨在供家庭长期使用，让用户能够跟踪数月乃至数年的睡眠发展情况。这项服务也具有医学用途，因为睡眠障碍患者在干预前后可以进行长时间测量。
