Solution to Temperature Field Measurement of the Ladle Based on Laser Positioning and Scanning
LIU Jun1,2, MENG Xian-wu2, CI Ying3, FANG Jiang-xiong1,2, HOU Qing-ming2, CHE Zhong-xuan2, YANG Feng1,2
1. Engineering Research Center of Nuclear Technology Application(East China University of Technology), Ministry of Education, Nanchang, Jiangxi 330013, China;
2. School of Geophysics and Measurement-Control Technology, East China University of Technology, Nanchang, Jiangxi 330013, China;
3. School of Information Science and Engineering, Northeastern University, Shenyang, Liaoning 110819, China
Abstract：Ladle is a container which used to connect the steel-making and pouring sections.The tapping temperature of the steel-making furnace is directly determined by the temperature of the inner wall of the ladle,which is closely related to the energy saving and consumption Reduction of the enterprise.Before the ladle is filled with molten steel,the ladle is placed in the hot repair station by driving.The absolute position of the ladle after placement is difficult to fix,resulting in a temperature field distribution that cannot be determined.So,this article presents a method for measuring the temperature field of ladle by laser positioning and scanning.Firstly,the positioning laser is used to determine the spatial coordinates of the ladle.Then,the actuator of the main measurement platform drives the scanning laser and the infrared temperature measurement sensor to scan the inner wall surface of the ladle to obtain the distance measurement and temperature of each measured point on the inner wall of the ladle.According to the spatial coordinate relationship,the distance measurement values of the measured are mapped to the ladle coordinate values,therefore we obtained the coordinates and temperature values of the inner wall of the ladle.So the temperature field distribution is obtained.The field experiment shows that the method can obtain the temperature field of the ladle,the coordinate positioning uncertainty is no more than 3.0mm;the maximum error of temperature measurement is 4.7℃,the minimum error is 0.5℃,and the average error is less than 3.3℃.The method achieves to high positioning and measurement accuracy,it will provide important information for steel-making control based on temperature information.
刘军, 孟宪武, 次英, 方江雄, 侯庆明, 车仲轩, 杨凤. 基于激光定位与扫描的钢包温场测量方法[J]. 电子学报, 2019, 47(5): 1017-1022.
LIU Jun, MENG Xian-wu, CI Ying, FANG Jiang-xiong, HOU Qing-ming, CHE Zhong-xuan, YANG Feng. Solution to Temperature Field Measurement of the Ladle Based on Laser Positioning and Scanning. Acta Electronica Sinica, 2019, 47(5): 1017-1022.
[1] 郑德忠,周颖慧.单CCD数字滤光温度场测量[J].电子学报,2009,37(12):2774-2777. ZHENG De-zhong,ZHOU Ying-hui.Digital filtering for temperature field measurement using a single CCD camera[J].Acta Electronica Sinica,2009,37(12):2774-2777.(in Chinese)
[2] 石琳,李志玲,张景.高炉炉缸壁三维简化为二维的数值模拟建模[J].钢铁研究学报,2011,23(02):21-24. Shi Lin,Li Zhi-lin,Zhang Jing.Modelling study of three-dimensional simplified as two-dimensional numerical simulation for blast furnace hearth[J].Journal of Iron and Steel Research,2011,23(02):21-24.(in Chinese)
[3] 程树森,杨天钧,左海滨,全强,王泽愍,吴启常.长寿高炉炉缸和炉底温度场数学模型及数值模拟[J].钢铁研究学报,2004,16(1):6-9. CHENG Shu-sen,YANG Tian-jun,ZUO Hai-bin,QUAN Qiang,WANG Ze-min,WU Qi-chang.Mathematical model and numerical simulation of temperature field for hearth and hearth bottom of long campaign blast furnace[J].Journal of Iron and Steel Research,2004,16(1):6-9.(in Chinese)
[4] LI Chang-sheng,YU Hai-liang,DENG Guan-yu,et al.Numerical simulation of temperature field and thermal stress field of work roll during hot strip rolling[J].Journal of Iron and Steel Research (International),2007,14(5):18-21.
[5] Phanomchoeng G,Chantranuwathana S,Charunyakorn P.On-line ladle lining temperature estimation by using bounded jacobian nonlinear observer[J].Journal of Iron and Steel Research (International),2016,23(8):792-799.
[6] 沈雪华,熊庆宇,石欣,等.基于收发分体声波换能器的二维温度场重建[J].仪器仪表学报,2015,36(8):1715-1723. Shen Xuehua,Xiong Qingyu,Shi Xin,et al.Two-dimensional temperature field reconstruction based on split type acoustic transducers[J].Chinese Journal of Scientific Instrument,2015,36(8):1715-1723.(in Chinese)
[7] Javidi B.Integral three-dimensional imaging with digital reconstruction:Opt lett,US 20020114077 A1[P].2002.
[8] Li W,Su X,Liu Z.Large-scale three-dimensional object measurement:a practical coordinate mapping and image data-patching method[J].Applied Optics,2001,40(20):3326-3327.
[9] Scott W R,Roth G.View planning for automated three-dimensional object reconstruction and inspection[J].ACM Computing Surveys,2003,35(1):64-96.
[10] Wen C D.Investigation of steel emissivity behaviors:Examination of multispectral radiation thermometry (MRT) emissivity models[J].International Journal of Heat & Mass Transfer,2010,53(9):2035-2043.
[11] Nie B,He X,Zhang C,et al.Temperature measurement of gas explosion flame based on the radiation thermometry[J].International Journal of Thermal Sciences,2014,78(3):132-144.
[12] Wen C D,Lu C T.Suitability of multispectral radiation thermometry emissivity models for predicting steel surface temperature[J].Journal of Thermophysics & Heat Transfer,2015,24(3):662-665.
[13] Hagqvist P,Sikström F,Christiansson A K.Emissivity estimation for high temperature radiation pyrometry on Ti-6Al-4V[J].Measurement Journal of the International Measurement Confederation,2013,46(2):871-880.
2019, Vol. 47 
