Shimazaki Takunori, Hara Shinsuke, Okuhata Hiroyuki, Nakamura Hajime, Kawabata Takashi
Annu Int Conf IEEE Eng Med Biol Soc. 2015;2015:2026-9. doi: 10.1109/EMBC.2015.7318784.
Heart rate sensing can be used to not only understand exercise intensity but also detect life-critical condition during sports activities. To reduce stress during exercise and attach heart rate sensor easily, we developed a clip-type photoplethysmography (PPG)-based heart rate sensor. The sensor can be attached just by hanging it to the waist part of undershorts, and furthermore, it employs the motion artifact (MA) cancellation technique. However, due to its low contact pressure, sudden jumps and drops, which are called "outliers," are often observed in the sensed heart rate, so we also developed a simple outlier rejection technique. By an experiment using five male subjects (4 sets per subject), we confirmed the MA cancellation and outlier rejection capabilities.
心率传感不仅可用于了解运动强度，还能在体育活动期间检测危及生命的状况。为了减轻运动时的压力并方便佩戴心率传感器，我们开发了一种基于夹子式光电容积脉搏波描记法（PPG）的心率传感器。该传感器只需挂在短裤腰部就能佩戴，此外，它还采用了运动伪影（MA）消除技术。然而，由于其接触压力较低，在感知到的心率中经常会出现被称为“异常值”的突然跳动和下降，因此我们还开发了一种简单的异常值剔除技术。通过对五名男性受试者进行实验（每位受试者进行4组实验），我们证实了MA消除和异常值剔除能力。
