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Proceedings Paper

Achieving thermography with a thermal security camera using uncooled amorphous silicon microbolometer image sensors
Author(s): Yu-Wei Wang; Curtis Tesdahl; Jim Owens; David Dorn
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Paper Abstract

Advancements in uncooled microbolometer technology over the last several years have opened up many commercial applications which had been previously cost prohibitive. Thermal technology is no longer limited to the military and government market segments. One type of thermal sensor with low NETD which is available in the commercial market segment is the uncooled amorphous silicon (α-Si) microbolometer image sensor. Typical thermal security cameras focus on providing the best image quality by auto tonemaping (contrast enhancing) the image, which provides the best contrast depending on the temperature range of the scene. While this may provide enough information to detect objects and activities, there are further benefits of being able to estimate the actual object temperatures in a scene. This thermographic ability can provide functionality beyond typical security cameras by being able to monitor processes. Example applications of thermography[2] with thermal camera include: monitoring electrical circuits, industrial machinery, building thermal leaks, oil/gas pipelines, power substations, etc...[3][5] This paper discusses the methodology of estimating object temperatures by characterizing/calibrating different components inside a thermal camera utilizing an uncooled amorphous silicon microbolometer image sensor. Plots of system performance across camera operating temperatures will be shown.

Paper Details

Date Published: 18 May 2012
PDF: 9 pages
Proc. SPIE 8354, Thermosense: Thermal Infrared Applications XXXIV, 83540S (18 May 2012); doi: 10.1117/12.919248
Show Author Affiliations
Yu-Wei Wang, Schneider Electric (United States)
Curtis Tesdahl, Schneider Electric (United States)
Jim Owens, Schneider Electric (United States)
David Dorn, Schneider Electric (United States)

Published in SPIE Proceedings Vol. 8354:
Thermosense: Thermal Infrared Applications XXXIV
Douglas Burleigh; Gregory R. Stockton, Editor(s)

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