The invention discloses a ship water gauge measuring method, which is used for calculating ship six-surface water gauge readings by measuring ship near-shore side water gauge characteristic parameters and utilizing curve fitting and space coordinate transformation. The method comprises the steps of setting a global coordinate system to the ground, and measuring geometric characteristic parameters of head, middle and tail water gauge marking positions of the ship near-shore side; calculating a rolling angle, a pitching angle and a yaw angle of the ship in the current state; carrying out curve fitting on the head, middle and tail cross section shapes of the ship near-shore side, carrying out curve interpolation by utilizing the water surface height, and obtaining the water gauge readings of the ship near-shore side; setting a local coordinate system of the ship, and performing fitting and water gauge reading calculation on the section shape of the offshore side of the ship through space coordinate transformation according to the transverse geometric symmetry characteristic of the shape of the ship. According to the method, the six-surface water gauge readings of the ship can be given only by measuring the water gauge mark data of the ship near-shore side, so that the safety risk of obtaining the water gauge data of the ship on the offshore side is reduced, the operation time is shortened, and the working efficiency is improved.

    本发明公开了一种船舶水尺测量方法,通过测量船舶近岸侧水尺特征参数,利用曲线拟合和空间坐标变换,推算船舶六面水尺读数,包括步骤:设定对地全局坐标系,测量船舶近岸侧首、中、尾水尺标记位置的几何特征参数;推算当前状态下船舶的横摇角、纵摇角和偏航角;对船舶近岸侧首、中、尾横剖面形状进行曲线拟合,利用水面高度进行曲线插值,得到船舶近岸侧水尺读数;设定船舶局部坐标系,利用船舶外形横向的几何对称特点,通过空间坐标变换,对船舶离岸侧剖面形状进行拟合和水尺读数推算。本方法仅需测量船舶近岸侧的水尺标记数据,便可给出船舶的六面水尺读数,降低了离岸侧船舶水尺数据获取的安全风险,缩短了作业时间,提高了工作效率。


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    Title :

    Ship water gauge measuring method


    Additional title:

    一种船舶水尺测量方法


    Contributors:
    SUN CHENGMENG (author) / LIN HAIHUA (author) / ZHANG YANG (author) / ZHANG BAIHU (author)

    Publication date :

    2021-06-25


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B63B Schiffe oder sonstige Wasserfahrzeuge , SHIPS OR OTHER WATERBORNE VESSELS



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