Volume measurement method and device based on three-dimensional laser scanning

Abstract

The embodiment of the invention provides a volume measurement method and a device based on three-dimensional laser scanning. The volume measurement method based on three-dimensional laser scanning comprises the following steps: acquiring and obtaining three-dimensional point cloud data of a space body inner wall in a three-dimensional laser scanning manner; modeling a spatial triangular mesh by utilizing the three-dimensional point cloud data of the space body inner wall and obtaining a plurality of slice shapes of a reconstructed space body; and calculating a technological means of the volume of the space body according to the plurality of slice shapes of the reconstructed space body to achieve the following technical effect that a technology based on the three-dimensional laser scanning is provided to quickly and accurately measure the volumes of a railway tank car, a tank type container and other space bodies. The volume measurement method and the device have the beneficial effects that the operation is simple, the safety is high, the labor intensity is low, the railway tank, the tank type container and other geometrical shapes can be adapted, different working environments can be satisfied, the effect of a tank body material and the like is reduced, the data calculation is convenient, the measurement time is short, and the accuracy is high.

Description

technical field [0001] The invention relates to the technical field of space volume measurement, in particular to a volume measurement method and device based on three-dimensional laser scanning. Background technique [0002] At present, railway tank cars and tank containers are widely used at home and abroad as the main means of transportation for bulk liquid cargo. Among them, the railway tank car is a measuring instrument for national compulsory verification, and its volume verification result is not only the basis for the national railway transportation authority to formulate the safe loading capacity, but also the basis for trade settlement between enterprises. There are about 140,000 railway tank cars currently in operation in my country , accounting for 15% of the total number of railway wagons. The number of tank containers is increasing day by day as a tool for multi-modal transportation such as roads, waterways, and railways. Carry out volume verification work for...

AI Technical Summary

Problems solved by technology

[0015] The total station measurement adopts the method of calculating the volume of the container with finite point coordinates. Due to the limited measurement points, the accuracy of the measurement results is low when the geometric model is irregular or the deformation is large.

[0016] In the case of using a 3D laser scanner to measure the volume of vertical metal tanks in foreign countries, since the volume of vertical metal tanks is much larger than that of railway tank cars and tank containers, in the case of the same error in laser measurement, railway tank cars, tank cars, etc. The accuracy of tank container volume measurement will be greatly reduced, which cannot meet the measurement accuracy requirements

[0017] The prior art 3 is relative

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