A Research Of The Application Of Image Measurement In Wheelset Profile Inspection

This paper mainly introduced an automatic measurement of wheelset dimensions and wheel tread profiles in-track ?"Wheelset Inspection Equipment"("Equipment" for short). The basic technique used in "Equipment" was CCD(Charge Couple Device) image measurement.Firstly, wheelset knowledge related to the research was introduced. After a deep study of various inspection techniques, we drew the conclusion that untouched dynamic inspection technique based on CCD image measurement is a leading technique for dimension measurement in future. Secondly, this paper designed general functions of "Equipment". Analyzed inspecting principles and put up with a method-"light section image measurement" to measure geographic parameter of the wheel tread profile; Conceived configuration and inspection flow of "Equipment". Then, This paper had an emphasis on "wheel tread profile inspection unit" consisted in "Equipment". Hardware and software designs of this unit was detailed explains: including sensor's characteristic parameter calculation, sensor's installing location estimation and arithmetic analysis for image processing. Finally, this paper introduced the equipment's running status in laboratory and in field. Detailed analyzed measuring data. Summarized problems encountered in field and resolution corresponding. Brought forward plans to improve "Equipment". At last, this paper summarized significant designs during the course of research and development, and prospected powerful automatic inspection equipment been developed for wheelset inspection in future.