The invention discloses a train wheel out-of-roundness detection method based on three-dimensional information. The train wheel out-of-roundness detection method comprises the steps of image acquisition and preprocessing, laser center line extraction, laser coordinate transformation and wheel out-of-roundness detection. According to the method, a small number of line-scan digital cameras and a 3D laser scanner module are combined to generate a plurality of two-dimensional image data and laser scanning data with depth information, a tread area of laser scanning is extracted, and a wheel tread contour with depth information is reconstructed based on an elliptical model. According to the method, the local out-of-roundness or the overall out-of-roundness of the wheel can be accurately calculated through the wheel tread contour data, and a detection report is dynamically generated in time for a customer to check and overhaul.

    本发明公开了一种基于三维信息的列车车轮不圆度检测方法,包括图像采集并预处理、激光中心线提取、激光坐标变换和车轮不圆度检测。本发明只需采用少量的线阵相机与3D激光扫描仪模块的组合,生成多个二维图像数据及具有深度信息的激光扫描数据,提取激光扫描的踏面区域,基于椭圆模型重建具有深度信息的车轮踏面轮廓。无论是车轮局部不圆度还是整体不圆度,本发明方法都可以通过车轮踏面轮廓数据精确计算出来,及时动态生成检测报告供客户复核检修。


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    Title :

    Train wheel out-of-roundness detection method based on three-dimensional information


    Additional title:

    一种基于三维信息的列车车轮不圆度检测方法


    Contributors:
    GUO QICHANG (author) / MEI JINGSONG (author) / WU SONGYE (author) / WANG GAN (author) / LI XIANGYONG (author) / DONG ZHIYUAN (author) / ZHANG ZHAOGUI (author)

    Publication date :

    2022-06-14


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B61K Andere Hilfseinrichtungen für Eisenbahnen , OTHER AUXILIARY EQUIPMENT FOR RAILWAYS



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