Building automation system and method using ceiling-mounted infrared sensors

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United States of America Patent

PATENT NO 11118804
APP PUB NO 20190285300A1
SERIAL NO

16354007

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Abstract

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A ceiling-mounted sensing unit includes (i) one or more air temperature sensors; (ii) an infrared sensor having a field of view oriented towards a floor of the room; and (iii) a microcontroller receiving readings from both the air temperature sensors and the infrared sensor, the microcontroller providing an estimated temperature at a predetermined distance above the floor of the room based on a model of the room. The model may be based on a double-exponential smoothing function obtained by matching a Kalman filter model. Alternately, the model may be itself a Kalman filter model or a machine learning trained linear model obtained using a linear regression technique, such as L2 regularization. The Kalman filter model uses a state vector that includes both the estimated temperature and a rate of change in the estimated change in temperature. The machine-trained model may be verified using a k-fold cross-validation technique.

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Patent Owner(s)

Patent OwnerAddress
DELTA INTELLIGENT BUILDING TECHNOLOGIES (CANADA) INC17850 56TH AVENUE SURREY V3S 1C7

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Batdorf, Kevin Scott New Westminster, CA 1 2
De, Vaz Dmitri John Surrey, CA 1 2
Kwong, Robert Christopher Coquitlam, CA 8 12
Nicholls, John Vincent Surrey, CA 1 2
Swanton, Andrew Michael Surrey, CA 1 2
Tsui, Lap Yan Jonathan Surrey, CA 1 2
Vanditmars, Derek John Vancouver, CA 1 2
Yoo, Junsang Burnaby, CA 8 2

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