Automatic compensation of emissivity in three-wavelength pyrometers |
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| Institution: | 1. Department of Computer, Damietta University, Damietta, Egypt;2. Department of Mathematics, Faculty of Science, Zagazig University, Zagazig, Egypt;3. IN3 - Computer Science Department, Universitat Oberta de Catalunya, Castelldefels, Spain;4. Departamento de Ciencias Computacionales, Universidad de Guadalajara, CUCEI, Av. Revolucion 1500, Guadalajara, Jal, Mexico;1. Harbin Engineering University, School of Information and Communication Engineering, No. 145-1, Nantong Street, Harbin 150001, China;2. Harbin Institute of Technology, School of Electrical Engineering and Automation, 92 West Dazhi Street, Harbin 150001, China;1. State Key Laboratory of Coal Mine Disaster Dynamics & Control, College of Materials Science and Engineering, Chongqing University, Chongqing 400044, PR China;1. School of Electrical and Power Engineering, China University of Mining and Technology, No.1, Daxue Road, Xuzhou, Jiangsu 221116, China;2. Mechanical and Industrial Engineering Department, Northeastern University, Boston, MA 02115, USA |
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| Abstract: | The paper presents a method of temperature measurement with automatic compensation of emissivity affecting a measurement result. For temperature calculation, the data from three independent channels are taken and an object’s emissivity is approximated with constant, power, and exponential functions. One of these functions is selected automatically and such a selection is made on the basis of mutual relations between luminance temperatures and temperatures resulting from a ratio of signals for two measuring wavelengths. A chosen approximating function indicates a choice of temperature calculation method. |
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