公开(公告)号：US20240060832A1

公开(公告)日：2024-02-22

申请号：US18353040

申请日：2023-07-14

Applicant: Apple Inc.

Inventor： Wanfeng HUANG ,  Hongling CHEN ,  Ali M. AMIN ,  James C. CLEMENTS

IPC: G01K17/16 ,  G01K7/06

CPC classification number: G01K17/16 ,  G01K7/06 ,  G01K1/143

Abstract: A temperature sensing system includes absolute temperature sensor(s) and/or thermopiles that form concentric geometries and are uniform in height. In some examples, the temperature sensing system can determine internal body temperature and/or ambient temperature based at least on a thermal gradient associated with the inner thermopile, a thermal gradient associated with the outer thermopile, a lateral temperature difference between the inner and the outer thermopiles, and an absolute temperature. In some examples, the temperature sensing system can determine the internal body temperature and/or ambient temperature using at least four absolute temperature sensors forming a concentric structure.