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Abstract

An original non-contact measurement method using multiple line-structured laser sensors is introduced for seamless steel pipe straightness error is in this paper. An arc appears on the surface of the measured seamless steel pipe against a line-structured laser source. After the image of the arc is accepted by a CCD camera, the coordinates of the center of the pipe cross-section circle containing the arc can be worked out through a certain algorithm. Similarly, multiple line-structured laser sensors are equipped parallel to the pipe. The straightness error of the seamless steel pipe, therefore, can be inferred from the coordinates of multiple cross-section centers obtained from every line-structured laser sernsor.

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中图分类号:TN24

所属栏目:Experiment Techniques and Components

基金项目:Supported by the National Nature Science Foundation of China under grant No. 59975070.

收稿日期:2000-03-24

修改稿日期:2000-05-23

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作者单位    点击查看

SUN Changku:State Key Laboratory of Precision Measuring Technology and Instruments, Tianjin University, Tianjin 300072, China Received March 24 2000
LIU Yue:State Key Laboratory of Precision Measuring Technology and Instruments, Tianjin University, Tianjin 300072, China Received March 24 2000
LU Rongsheng:State Key Laboratory of Precision Measuring Technology and Instruments, Tianjin University, Tianjin 300072, China Received March 24 2000
YE Shenghua:State Key Laboratory of Precision Measuring Technology and Instruments, Tianjin University, Tianjin 300072, China Received March 24 2000

备注:was bom in 1967. He received Ph. D. degree in Opto-electronic Instrument, from SanktPeterburgPrecision Mechanics and Optics Institute (Russia) in 1994. He is an associate professor at the Department of Precision Instrument Engineering of Tianjin University. His research interests include laser measuring technology and computer vision inspection system.

【1】Sun Changku, Lu Rongsheng et al. A laser vision test method for seamless steel pipe straightness.In 1st International Symposium on Instrumentation Science and Technology.Luoyang, China. Aug. 1999. 448~452

【2】Hao Qun, Zhao Yang, L. I. Dacheng et al.Straightness measurement using laser diode and CCD camera. Chinese J. Lasers, 1999, B8(3):215~220

【3】Zhang Guoyu, An Zhiyong et al. Optoelectmic non-contact measuring method for straightness error. Opt. Technol., 1999, (1): 41~43 (inChinese)

【4】R. Y. Tsai. An efficient and accurate camera calibration technique for 3D machine vision. In Proc. IEEE Conf. On Computer Vision and Patern Recognition, Miami Beach, FL, 1986.364~ 374

【5】Luo Ming. Study and application of visual measurement system using multi-sensors.Doctoral dissertation, Tianjin University. 1996(in Chinese)

引用该论文

SUN Changku,LIU Yue,LU Rongsheng,YE Shenghua. [J]. 中国激光(英文版), 2001, 10(2): 89-92

SUN Changku,LIU Yue,LU Rongsheng,YE Shenghua. Study on Laser Visual Measurement Method for Seamless Steel PipeStraightness Error by Multiple Line-structured Laser Sensors[J]. Chinese Journal of Lasers B, 2001, 10(2): 89-92

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