公开(公告)号：US20150382105A1

公开(公告)日：2015-12-31

申请号：US14319182

申请日：2014-06-30

Applicant: Google Inc.

Inventor： Jason Donald Thompson ,  Vikram Singh Bajaj ,  Victor Marcel Acosta ,  Tamara Lynn Troy

IPC: H04R3/00 ,  A61B5/00 ,  A61B5/1455

CPC classification number: A61B5/6801 ,  A61B5/1455 ,  A61B5/681 ,  A61B5/7203 ,  A61B5/7475

Abstract: Optical measurement of physiological parameters with wearable devices often includes measuring signals in the presence of significant noise sources. These noise sources include, but are not limited to, noise associated with: variable optical coupling to skin or tissue, variations in tissue optical properties with time due to changes in humidity, temperature, hydration, variations in tissue optical properties between individuals, variable coupling of ambient light sources into detectors, and instrument and detector noise, including electrical noise, radio frequency or magnetic interference, or noise caused by mechanical movement of the detector or its components. The present disclosure includes devices and methods configured to produce representations of the raw data in which noise, broadly defined, is separated from the data of interest. The disclosed devices and methods may include subtracting or calibrating out these noise sources and other spurious fluctuations in wearable devices with optical sensors.

Abstract translation: 使用可穿戴设备的生理参数的光学测量通常包括在存在显着噪声源的情况下测量信号。 这些噪声源包括但不限于与以下相关的噪声：与皮肤或组织的可变光耦合，由于湿度变化，温度，水合，组织光学性质变化在组织光学性质随时间的变化，可变耦合 环境光源进入检测器，以及仪器和检测器噪声，包括电噪声，射频或磁干扰或由检测器或其组件的机械运动引起的噪声。 本公开包括被配置为产生原始数据的表示的设备和方法，其中广义地定义的噪声与感兴趣的数据分离。 所公开的设备和方法可以包括使用光学传感器减去或校准这些噪声源和可穿戴设备中的其他杂散波动。