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Machine learning-assited optical thermometer for continuous temperature analysis inside molten metal.
- Source :
-
Sensors & Actuators A: Physical . May2021, Vol. 322, pN.PAG-N.PAG. 1p. - Publication Year :
- 2021
-
Abstract
- [Display omitted] • An optical fiber thermometer for continuous temperature measurement inside molten steel. • A robust cladding material for sapphire fiber at high temperature. • Precise temperature determination using convolutional neural network. This paper demonstrates a robust optical fiber thermometer (OFT) for temperature measurement under extreme environments. To date, the development of sensors for continuous temperature measurement in environments with temperatures over 1000 °C, severe electromagnetic interferences, and strong oxidizing agents has been very challenging. The proposed nano-OFT system consists of a ceramic tube, a nanorod coated sapphire fiber, and a near-infrared (NIR) spectrum analyzer for continuous measurement of molten steel temperature in furnaces. The nanorod layer functions as an effective cladding material for the sapphire fiber to sustain a reliable transmission of NIR thermal emissions. The thermal radiation from the ceramic tube's tip was coupled out of the nano-OFT probe via the sapphire fiber and measured using the NIR spectrometer. The NIR emissions were analyzed using a convolution neural network to determine the probe temperature. Our results show that the nano-OFT probe can measure furnace temperature in the temperature range from 1,000–1,650 °C, with the error percentage as low as 0.5 %. The nano-OFT system can be employed by the steel industry to monitor steel temperature continuously, and thus enhance steel production efficiency and reduce energy consumption. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 09244247
- Volume :
- 322
- Database :
- Academic Search Index
- Journal :
- Sensors & Actuators A: Physical
- Publication Type :
- Academic Journal
- Accession number :
- 149243839
- Full Text :
- https://doi.org/10.1016/j.sna.2021.112626