基于空间几何理论的货物超限等级计算机判定算法
doi: 10.3969/j.issn.0258-2724.2014.01.022
Computer-Assisted Determination of Out-of-Gauge Grade of Goods Based on Space Geometry
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摘要: 为了解决外形复杂、体积庞大的阔大货物人工计算判断超限等级过程中计算繁琐、计算量大及超限等级判定容易出现误差的问题，利用空间几何理论及空间相对位置量化货物外部轮廓，通过筛选优化算法找出计算点，判定货物超限等级.算例分析表明：利用此算法得到的货物轮廓更加接近货物的实际外形，货物超限等级由传统算法判定的超级超限降低为二级超限，减小了简单规则导致货物轮廓超出实际外形过多而造成的超限等级判定误差；利用计算机判定算法计算阔大货物超限等级的时间可缩短为10 min，比传统人工判定算法的计算速度提高了66%.Abstract: Due to the complex shape and huge bulk of out-of-gauge goods, it is difficult and error-prone to determine the level of out-of-gauge just by manual calculation with a large workload. In order to solve this problem, quantitative partition of the outer contour of goods was performed according to space geometry and spatial relative position, and a screening and optimization algorithm was used to find the calculation points and to judge the out-of-gauge grade of the goods automatically. An application example show that the out-of-gauge grade of the cargo is reduced to the second level from the supper level that is originally judged by the conventional method using simple and regular outer contours. The outer contour of goods obtained by this algorithm is more close to the actuality, and the errors of out-of-gauge grade caused by overevaluation of the practical contour using simple and regular outer contours is reduced. In addition, through computer-assisted calculation of the out-of-gauge grade of big cargoes, this algorithm can reduce the calculating time to less than 10 min, with a 66% improvement in the calculation speed over the traditional algorithm.
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