High-temperature dual-band thermal imaging by means of high-speed CMOS camera system

Wolfgang Hauer, Gerald Zauner

Publikation: Beitrag in Buch/Bericht/TagungsbandKonferenzbeitrag

Abstract

When measuring rapid temperature change as well as measuring high temperatures (>2000 K) commercial pyrometers reach the limits of their performance very quickly. Thus a novel type of high temperature measurement system using a high-speed camera as a two-color pyrometer is introduced. In addition to the high temporal resolution, ranging between 10 μs - 100 μs, the presented system also allows the determination of the radiation temperature distribution at a very high spatial resolution. The principle of operation including various image processing algorithms and filters is explained by means of a concrete example, where the surface temperature decay of a carbon electrode heated by an electric arc is measured. The measurement results yield a temperature of a hot spot on the contact surface of 3100 K which declines to approx. 1800 K within 105 ms. The spatial distribution of surface temperatures reveal local temperature variations on the contact. These variations might result from surface irregularities, such as protrusions or micro-peaks, due to inhomogeneous evaporation. An error analysis is given, for evaluating the potential accuracy inherent in practical temperature measurements.

OriginalspracheEnglisch
TitelProceedings of SPIE-IS and T Electronic Imaging - Image Processing
UntertitelMachine Vision Applications VI
DOIs
PublikationsstatusVeröffentlicht - 2013
VeranstaltungElectronic Imaging 2013 - San Francisco, USA/Vereinigte Staaten
Dauer: 3 Feb 20137 Feb 2013
http://spie.org/app/program/index.cfm?fuseaction=conferencedetail&export_id=&ID=x16223&redir=x16223.xml&conference_id=997528&event_id=996859&programtrack_id=997509

Publikationsreihe

NameProceedings of SPIE - The International Society for Optical Engineering
Band8661
ISSN (Print)0277-786X

Konferenz

KonferenzElectronic Imaging 2013
Land/GebietUSA/Vereinigte Staaten
OrtSan Francisco
Zeitraum03.02.201307.02.2013
Internetadresse

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