公开(公告)号：US20220122293A1

公开(公告)日：2022-04-21

申请号：US17567184

申请日：2022-01-03

Applicant: PIXART IMAGING INC.

Inventor： Chih-Ming SUN ,  Po-Wei YU ,  Yen-Chang CHU

IPC: G06T7/80 ,  G06T7/30 ,  G01J5/80 ,  A61B5/01 ,  H04N5/247 ,  G01J5/00

Abstract: There is provided a temperature measurement system including an image sensor, a thermal sensor and a processor. The image sensor captures an image frame. The thermal sensor captures a thermal image. The processor calibrates measured temperatures of the thermal sensor and calibrates offset pixels between the image frame and the thermal image corresponding to different operating distances.

公开(公告)号：US20220061675A1

公开(公告)日：2022-03-03

申请号：US17385046

申请日：2021-07-26

Applicant: PIXART IMAGING INC.

Inventor： Po-Wei YU ,  Yi-Chung CHEN ,  Ting-Yang CHANG ,  Chih-Ming SUN ,  Kai-Shun CHEN ,  Yen-Chang CHU

IPC: A61B5/01

Abstract: There is provided a forehead temperature measurement system including an image sensor, a thermal sensor and a processor. The image sensor is used to output an image frame. The thermal sensor is used to output a thermal image. The processor is used to determine a forehead region in the image frame, map the forehead region to the thermal image and identify a forehead temperature according to a forehead mapped region in the thermal image. The processor further calibrates or compensates the forehead temperature according to an area. of the forehead region.

公开(公告)号：US20230060584A1

公开(公告)日：2023-03-02

申请号：US17722132

申请日：2022-04-15

Applicant: PIXART IMAGING INC.

Inventor： Cheng-Nan TSAI ,  Yen-Chang CHU ,  Chih-Ming SUN ,  Chi-Chih SHEN ,  Kuo-Hsiung LI

IPC: G01N21/47 ,  G01N33/00 ,  G08B17/107

Abstract: There is provided an optical machine of a smoke detector including a substrate, a light source, a light sensor and a light blocking member. The light source and the light sensor are arranged on the substrate in a first direction. The light blocking member is arranged upon the light source and blocks a part of an emission angle of the light source in the first direction far away from the light sensor.

公开(公告)号：US20230032079A1

公开(公告)日：2023-02-02

申请号：US17732530

申请日：2022-04-29

Applicant: PIXART IMAGING INC.

Inventor： Yen-Chang CHU ,  Po-Wei YU ,  Yen-Po CHEN ,  Chih-Ming SUN

IPC: G01J5/10 ,  G01J5/0875

Abstract: There is provided a thermometer structure including a circuit board, an infrared thermometer, a heat sink and a metal block. The infrared thermometer is arranged on the circuit board and electrically connected thereto. The heat sink is arranged on the circuit board and covers the infrared thermometer. The metal block is in contact with at least one of the circuit board and the heat sink to stabilize a local temperature of the thermometer structure.

公开(公告)号：US20230206743A1

公开(公告)日：2023-06-29

申请号：US18111605

申请日：2023-02-20

Applicant: PixArt Imaging Inc.

Inventor： Cheng-Nan TSAI ,  Guo-Zhen WANG ,  Ching-Kun CHEN ,  Yen-Chang CHU ,  Chih-Ming SUN

IPC: G08B17/107

CPC classification number: G08B17/107

Abstract: There is provided a smoke detector including a light source, a reflective surface, a light sensor and a processor. The light sensor receives reflected light when the light source emits light toward the reflective surface, and generates a reference detection signal when there is no smoke. The processor receives the detection signal from the light sensor, and automatically selects a set of predetermined condition thresholds according to a profile of the detection signal to be compared with the detection signal thereby determining whether to generate an alarm according to the comparison result.

公开(公告)号：US20220165141A1

公开(公告)日：2022-05-26

申请号：US17320222

申请日：2021-05-14

Applicant: PixArt Imaging Inc.

Inventor： Cheng-Nan TSAI ,  Guo-Zhen WANG ,  Ching-Kun CHEN ,  Yen-Chang CHU ,  Chih-Ming SUN

IPC: G08B17/107

Abstract: There is provided a smoke detector including a light source, a reflective surface, a light sensor and a processor. The light sensor receives reflected light when the light source emits light toward the reflective surface, and generates a reference detection signal when there is no smoke. The processor receives the detection signal from the light sensor, and automatically selects a set of predetermined condition thresholds according to a profile of the detection signal to be compared with the detection signal thereby determining whether to generate an alarm according to the comparison result.