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.

公开(公告)号：US20230098236A1

公开(公告)日：2023-03-30

申请号：US17930041

申请日：2022-09-06

Applicant: Apple Inc.

Inventor： Wegene H. TADELE ,  Habib S. KARAKI ,  James C. CLEMENTS ,  Chin S. HAN ,  Craig C. D'SOUZA ,  Daniel W. LABOVE ,  Esther CHEN ,  Joseph R. LEE ,  Kuo Jen HUANG ,  Wanfeng HUANG ,  Fred Y. CHOU ,  Hongling CHENG ,  Ali M. AMIN ,  Chia-Hsien LIN

IPC: G01K17/20 ,  G01K7/02

Abstract: Robust estimation of temperatures inside and outside a device can be achieved using one or more absolute temperature sensors optionally in conjunction with thermopile heat flux sensors. Thermopile temperature sensing systems can measure a temperature gradient across two locations within the device, to estimate absolute temperature at locations that are impractical to measure using absolute temperature sensors. Using heat flux models associated with the device, the thermopile temperature sensing system can be used to estimate temperature associated with objects that contact an outer surface of the device, such as a user's skin temperature. Additionally, the thermopile temperature sensing system can be used to estimate ambient air temperature. Within a device, temperature measurements from the thermopile temperature sensors can be used to compensate sensor measurements, such as when the accuracy or reliability of a sensor varies with temperature.