CCD cameras as thermal imaging Devices in heat treatment processes

Zauner, Gerald; Heim, Daniel; Niel, Kurt S.; Hendorfer, G.; Stoeri, Herbert

doi:10.1117/12.526339

Cited by 7 publications

(6 citation statements)

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“…Instead, temperature changes were isolated in order to state where NiO oxidation "exothermic reactions" and carbon deposition "endothermic reactions" were occurring. It has been shown on a number of occasions [27,33,34] that emmisivity changes may be used in order to characterize materials, material growth and material morphing.…”

Section: N-ir Technology For Sofc Studymentioning

confidence: 99%

“…The fact that bodies at temperatures above 500 C certainly emit electromagnetic radiation wavelengths in the 0.8 lm to 1.2 lm range, which can be detected by CCD devices [3,27,28] affords CCD N-IR measurements. For example a similar technique used by Dhokkar et al [29] has been used in order to study transistor technology temperature fields in the micro scale.…”

Section: N-ir Technology For Sofc Studymentioning

confidence: 99%

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Highlighting of Critical Experimental Data for SOFC Modeling That is Missing From the Literature and Potential of N-IR Thermography for SOFC Study

Lawlor

2012

Journal of Fuel Cell Science and Technology

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Within the following brief is the researched conclusion that there is a lack of fundamental experimental data available to the scientific community detailing the temperature profile through the cathode/electrolyte/anode assembly section of Solid Oxide Fuel Cells (SOFC). Within these electrochemical reaction driving deceives, heat may be generated and diminished by several means. For example, heat is generally considered to be generated locally; as a result of the reactor’s fundamental operation. Furthermore, heat is generally considered to be generated and/or diminished, depending on the reforming method used, when the anode executes hydrocarbon fuel reformation. Not continually developing and/or utilizing novel experimental techniques, often developed for other fields, in order to provide fundamentally elucidating experimental data regarding SOFC operation is counter-intuitive. To date, the high temperature fuel cell field has not fully adopted the potential of thermography in order to study SOFC internal operation and indeed material characterization. This may be caused by the recent rapid development of the technology, which has reduced its cost while increasing its scope. This technical brief aims to highlight missing experimental data and suggest a technology and approach that may be able to address the issue.

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Section: N-ir Technology For Sofc Studymentioning

confidence: 99%

Section: N-ir Technology For Sofc Studymentioning

confidence: 99%

Highlighting of Critical Experimental Data for SOFC Modeling That is Missing From the Literature and Potential of N-IR Thermography for SOFC Study

Lawlor

2012

Journal of Fuel Cell Science and Technology

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“…For temperatures ranging from 350 to 600°C [10,11] CCD based systems have recently been developed and show interesting results.…”

Section: Introductionmentioning

confidence: 98%

Real time multispectral high temperature measurement: Application to control in the industry

Mériaudeau

2007

Image and Vision Computing

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“…Wavelengths around 1,1µm are the upper limit of silicon-based detectors (0,4 -1,1µm). In [1] a thermal imaging system based on a conventional silicon CCD camera is presented, where in particular the spectral band between 0,9µm and 1,1µm is utilized. This CCD based thermal imaging system is limited to applications where the object temperature is above approx.…”

Section: Introductionmentioning

confidence: 99%

Multiresolution denoising of CCD thermal images for improved spatial temperature resolution

Zauner

Hendorfer

2005

SPIE Proceedings

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This paper deals with the enhancement of CCD-(charge-coupled device) based thermal images by applying multiresolution image denoising methods. The main focus of this experimental work lies in the attempt to determine and visualize the surface temperature of heated metal parts in the temperature range of approx. 300°C to 500°C. The aim is measurement of the temperature distribution of metallic objects at the lower physical limits of silicon based detectors at a very high spatial resolution. It is shown that the examined filter methods lead to an improved spatial temperature resolution (NETD, noise equivalent temperature difference) that is highly reproducible. A precondition for correct application of these denoising filters is an exact noise characterization of the imaging system. This noise characterization is based on the 'Photon Transfer Technique' which clearly demonstrates the Poisson characteristic to be the determining factor of the image formation process, i.e. the random nature of photon emission and detection is the dominant source of noise in the imaging system presented. Based on these results, examples for density and intensity estimates of Poisson noise images with multiresolution methods (wavelets, platelets) are presented, showing the improved image quality and temperature resolution after the denoising process.

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CCD cameras as thermal imaging Devices in heat treatment processes

Cited by 7 publications

References 0 publications

Highlighting of Critical Experimental Data for SOFC Modeling That is Missing From the Literature and Potential of N-IR Thermography for SOFC Study

Highlighting of Critical Experimental Data for SOFC Modeling That is Missing From the Literature and Potential of N-IR Thermography for SOFC Study

Real time multispectral high temperature measurement: Application to control in the industry

Multiresolution denoising of CCD thermal images for improved spatial temperature resolution

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