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1. (WO2018056894) THERMOPILE ARRAY SENSOR FOR MOTION TRACKING AND ITS APPLICATION

Pub. No.:    WO/2018/056894    International Application No.:    PCT/SG2016/050463
Publication Date: Fri Mar 30 01:59:59 CEST 2018 International Filing Date: Thu Sep 22 01:59:59 CEST 2016
IPC: G01K 3/14
G01J 5/00
H05B 39/04
Applicants: UNITECH MECHATRONICS PTE LTD
Inventors: XIA, Qinghua
GAO, Dan
SONG, Xiaowen
JIANG, Lanzi
Title: THERMOPILE ARRAY SENSOR FOR MOTION TRACKING AND ITS APPLICATION
Abstract:
The system consists of thermopile infrared array sensors, an MCU implemented with motion tracking algorithms, and strategy for lighting control. A thermopile array sensor consists of a lens, a sensor chip, and an infrared image processor. The lens is for image formation. The sensor chip consists of row and columns of thermopile pixels, and placed at the focal point of the lens. The thermopile sensor use infrared radiation versus conduction for heat transfer. The infrared image processor of the sensor is used to derive an object's surface temperature captured by the pixels of the sensor, and transmit the digital temperature data to an external MCU for further processing. Motion tracking algorithms are formulated in the MCU based on the sensor's temperature measurements, for detection of moving objects, position and presence of motion and motionless objects, and objects' direction of movement. The tracking algorithms can be used for brightness control of lights to achieve energy saving.