公开(公告)号：US09517019B2

公开(公告)日：2016-12-13

申请号：US15144535

申请日：2016-05-02

Applicant: PIXART IMAGING INC.

Inventor： Robert Cheng-Yuan Wang ,  Hsin-Chia Chen

IPC: A61B5/026 ,  H04N5/235 ,  A61B5/00

CPC classification number: A61B5/0261 ,  A61B5/0013 ,  A61B5/024 ,  A61B5/0816 ,  A61B5/14551 ,  A61B5/6803 ,  A61B5/681 ,  A61B5/6824 ,  A61B5/6826 ,  A61B5/6829 ,  A61B5/6843 ,  A61B2576/00 ,  H04N5/2256 ,  H04N5/2353 ,  H04N5/2354 ,  H04N5/332 ,  Y02D10/155

Abstract: There is provided a physiological measurement device including a light source, an image sensor and a processor. The light source illuminates a skin surface with a first brightness value and a second brightness value. The image sensor receives scattered light from tissues below the skin surface, and outputs a first image frame corresponding to the first brightness value and a second image frame corresponding to the second brightness value. The processor calculates an intensity comparison index between the first image frame and the second image frame, calculates perfusion data according to the first image frame and/or the second image frame, and identifies a contact status according to the intensity comparison index.

Abstract translation: 提供了包括光源，图像传感器和处理器的生理测量装置。 光源以第一亮度值和第二亮度值照亮皮肤表面。 图像传感器从皮肤表面下方的组织接收散射光，并输出与第一亮度值对应的第一图像帧和对应于第二亮度值的第二图像帧。 处理器计算第一图像帧和第二图像帧之间的强度比较指数，根据第一图像帧和/或第二图像帧计算灌注数据，并根据强度比较指数识别接触状态。