Laser measurement system for rail linearity

LIU Peng; GAO Li-min; YUE Kai-duan

doi:10.3969/j.issn.1001-3806.2009.06.005

In order to measure the rail linearity accurately,an embedded laser detection system,composed of image acquisition and transmission module,image processing and data-processing module,laser range module,was designed based on autocollimation theory.After a series of image processing,the images and distance parameters were sent to the autocollimation algorithm,and the rail linearity offset can be obtained with a measuring accuracy of 0.3 mm.The system can replace the traditional manner of rail detection,also make the detection process more simple and accurate.

Laser measurement system for rail linearity

Corresponding author: GAO Li-min, glm@opt.ac.cn;

1. Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710068, China;

2. Graduate School, Chinese Academy of Sciences, Beijing 100039, China;

3. Xi'an Jiaotong University, Xi'an 710049, China

Received Date: 2008-09-01

Accepted Date: 2008-12-02

Available Online: 2009-12-25

Abstract: In order to measure the rail linearity accurately,an embedded laser detection system,composed of image acquisition and transmission module,image processing and data-processing module,laser range module,was designed based on autocollimation theory.After a series of image processing,the images and distance parameters were sent to the autocollimation algorithm,and the rail linearity offset can be obtained with a measuring accuracy of 0.3 mm.The system can replace the traditional manner of rail detection,also make the detection process more simple and accurate.

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Reference (9)

[1]	SI Q,CAI H Y,HUANG Z H,et al.Design of a real-time acquisition system of CMOS image based on USB2.0[J].Electronic Measurement Technology,2007,30(4):117-119(in Chinese).
[2]	LU Z Q.C/C++image processing program[M].Beijing:Tsinghua University Press,2005:184-221(in Chinese).
[3]	OTSU N.A threshold selection method from gray-level histograms[J].IEEE Transactions on Systems,Man and Cybernetics,1979,9(1):62-66.
[4]	HAN S Q,WANG L.A survey of thresholding methods for image segmentation[J].Systems Engineering and Electronics,2002,24(6):91-94(in Chinese).
[5]	ZHANG X H,YANG K T.An improved 2-D hough transform method for extracting laser spot parameter[J].Laser Infrared,2006,36(10):995-997(in Chinese).
[6]	WANG H F,WANG D B,LIU S Q.Research on auto ldentify and measurement approach of laser target image[J].Laser Infrared,2007,37(6):564-566(in Chinese).
[7]	ZHONG Z L,ZHOU B,HE Y Q,et al.Laser spot location in imaging laser detecting systems[J].Laser Technology,2008,32(3):248-251(in Chinese).
[8]	SUN A X,WANG J,HE H X,et al.Testing precision analysis of centrobaric of laser facula[J].Laser Technology,2004,28(6):667-679(in Chinese).
[9]	YANG J X,ZHUANG Y F,SHEN W X,et al.Precise measurement of the effective area of laser spot[J].High Power Laser and Particle Beams,2004,16(10):1263-1266(in Chinese).

Laser measurement system for rail linearity

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References

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