Dynamic Rail-Wear Inspecting System based on Machine Vision
Inspecting rail-wear status is critical to guarantee high-speed running safety, proper maintenance schedule, and low operating costs. A dynamic inspecting system based on machine vision is presented using near-infrared laser line projector, CCD (Charged Coupled Device) camera and image processing technology for detection of rail wear parameters. The design of single-element laser-beam projector is described. The projector takes a Gaussian laser beam and expands it into a uniform intensity line. A calibration frame has been constructed to obtain system coefficients before detection. A DLT (Direct Linear Transformation) algorithm is analyzed and modified to correct the nonlinear lens distortion using a planar spot-grid. And hundreds of rail profile images have been acquisitioned and processed. At the same time, rail wear values have been obtained fast and accurately. It is testified that the whole system of rail wear reflects the status of rail profiles wear authentically and dependably. Having high performance /cost ratio, the system is much suitable for Chinese context.
Guoxin LI Chonglin Wang Jianhua LIU Wenxian JIN
School of Information & Electronic Engineering, China University of Mining and Technology Xuzhou 221 China University of Mining and Technology, China University of Mining and Technology Xuzhou 221008 P Xiangshan Co.,Pingdingshan Coal Co.Ltd Pingdingshan 467044 P.R.China
国际会议
2nd IEEE Conference on Industrial Electronics and Applications(ICIEA 2007)(第二届IEEE工业电子与应用国际会议)
哈尔滨
英文
2007-05-23（万方平台首次上网日期，不代表论文的发表时间）