Su B Y, Ho K C, Skubic M, Rosales L
ECE Dept., University of Missouri, USA.
Annu Int Conf IEEE Eng Med Biol Soc. 2012;2012:2587-90. doi: 10.1109/EMBC.2012.6346493.
We propose in this paper an effective method to obtain the pulse rate from a hydraulic sensor that is placed under the mattress. The sensor captures the superposition of the ballistocardiogram (BCG) and the respiration signals. The BCG is modeled as the j-peak with a frequency modulation component. The proposed method utilizes the Hilbert transform to effectively capture the j-peak, which allows the pulse rate information to come out distinctively in the frequency domain. Among the five subjects tested, the error in pulse rate estimation is less than 1%.
我们在本文中提出了一种从置于床垫下方的液压传感器获取脉搏率的有效方法。该传感器捕捉心冲击图（BCG）和呼吸信号的叠加。BCG被建模为具有频率调制分量的j峰。所提出的方法利用希尔伯特变换有效地捕捉j峰，这使得脉搏率信息在频域中能清晰地显现出来。在测试的五名受试者中，脉搏率估计误差小于1%。
