The invention provides a wheel set size detection system calibration method, and relates to the technical field of railway freight, and the method comprises the following steps: S1, obtaining the internal parameters of a camera; s2, arranging a checkerboard at a position externally tangent to the simulated wheel, and collecting a checkerboard image by using a camera; s3, solving external parameters of the camera according to the checkerboard image acquired in the step S2; s4, collecting checkerboard pictures and laser ray pictures, and solving laser ray light plane equation parameters according to the collected pictures; and S5, acquiring a simulated wheel image, calculating the size of the simulated wheel by using the internal parameters and the external parameters of the camera and the parameters of the laser line light plane equation, comparing the calculation result with the real size of the simulated wheel, and judging the accuracy of the detection system according to the comparison result. Based on the technical scheme of the invention, the calibration process can be greatly simplified, the calibration operation efficiency can be effectively improved, and the wheel size detection precision can be improved.

    本发明提供了一种轮对尺寸检测系统标定方法,涉及铁路货运技术领域,包括以下步骤:S1、获取相机的内部参数;S2、将棋盘格设置于与模拟车轮外切的位置,并用相机采集棋盘格图像;S3、根据步骤S2中采集的棋盘格图像,求解相机的外部参数;S4、采集棋盘格和激光线照片,根据采集的照片求解激光线光平面方程参数;S5、采集模拟车轮图像,使用相机的内部参数、外部参数以及激光线光平面方程参数计算模拟车轮尺寸,并将计算结果与模拟车轮的真实尺寸作对比,根据对比结果判定检测系统准确性。基于本发明的技术方案,可大大简化标定流程,有效提高标定作业效率,并有助于提高车轮尺寸检测精度。


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    Title :

    Calibration method for wheel set size detection system


    Additional title:

    一种轮对尺寸检测系统标定方法


    Contributors:
    WANG HONGKUN (author) / XU JIANXI (author) / WANG MENG (author) / YIN HONGXIN (author) / JI SHENGPENG (author) / LI HONGXI (author) / XU HAIBO (author) / LIU ZE (author)

    Publication date :

    2023-07-18


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    G06T Bilddatenverarbeitung oder Bilddatenerzeugung allgemein , IMAGE DATA PROCESSING OR GENERATION, IN GENERAL / B61K Andere Hilfseinrichtungen für Eisenbahnen , OTHER AUXILIARY EQUIPMENT FOR RAILWAYS / G01B MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS , Messen der Länge, der Dicke oder ähnlicher linearer Abmessungen



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