An Analytical Model for Detectivity Prediction of Uncooled Bolometer Considering all Thermal Phenomena Effects
| Autor: | Hamed Azari Najafabadi, Khadije Khalili, M. Kalafi, Asghar Asgari |
|---|---|
| Jazyk: | angličtina |
| Předmět: |
Materials science
business.industry Thermal resistance Bolometer Detector Thermodynamics General Medicine Thermal conduction Noise (electronics) law.invention Thermal conductivity Optics law Detectivity Figure of merit Thermal mass Stefan-Boltzmann radiation law Temperature coefficient of resistance (TCR) Equivalent thermal circuit business Engineering(all) |
| Zdroj: | Procedia Engineering. :280-285 |
| ISSN: | 1877-7058 |
| DOI: | 10.1016/j.proeng.2011.03.052 |
| Popis: | In this paper, we proposed an approach for analyzing uncooled infrared bolometer detector. The model is taken into account temperature dependence of Thermal Coefficient of Resistance (TCR), thermal capacitance and thermal conduction through legs. Radiation thermal conductance between bolometer membrane and its surrounding is defined based on Stefan-Boltzmann radiation law. Calculations were carried out using an equivalent thermal circuit. Eventually, the Detectivity is obtained as figure of merit, considering temperature fluctuation noise. By this analysis, we achieved a reliable method to estimate the performance of bolometer detector in comparison with experimental cases. |
| Databáze: | OpenAIRE |
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