J4 ›› 2010, Vol. 27 ›› Issue (2): 227-233.

• Laser Applications • Previous Articles     Next Articles

Temperature measurement system of billet surface in furnace and analysis based on DSP

CHEN Feng-Hua, WU Hai-Bin   

  1. Research Center of Special TV Technology, Anhui University, Hefei 230088, China
  • Published:2010-03-28 Online:2010-03-05

Abstract:

Designed a real-time detection system of billet surface temperature in furnace, employing DSP as the image processing center，Collected two near-infrared radiation images in the furnace, Calculated the billet surface temperature using the colorimetric thermometry algorithm. The principle of colorimetric thermometry, the system hardware, software and testing effect are analyzed. By the testing in the H-beam furnace show that the system can real-time checking the whole surface temperature of billet, display the temperature field using pseudo-color image, and analysis the operating conditions of furnace. The temperature detection accuracy relative error is less than 0.5%, satisfying the demand of the furnace control system. The system resolves the difficult problem of billet surface temperature comprehensive dynamic checking in furnace.

Key words: image processing；surface temperature；colorimetric thermometry；DSP；billet ；furnace

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