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Measuring system and method for stacking alignment of containers

A measurement method and container technology, which is applied in the direction of measuring devices, measuring instruments, surveying and navigation, etc., can solve the problems of container stacking site difficulties, poor ambient light conditions, etc., and achieve the effect of eliminating interference and avoiding touching the system

Inactive Publication Date: 2015-05-27
NAT UNIV OF DEFENSE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method needs to identify the feature points and edges on the container, which is very difficult in poor ambient light conditions and a large number of stacked containers

Method used

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  • Measuring system and method for stacking alignment of containers
  • Measuring system and method for stacking alignment of containers
  • Measuring system and method for stacking alignment of containers

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Embodiment Construction

[0024] like figure 1 As shown, the container stacking and alignment measurement system of the present invention consists of two or more sets of line laser vision systems (two sets are taken here and below as examples), and each set of line laser vision systems includes several line lasers and a camera ( Two line lasers are used as an example here and below), and the laser lines projected by the line lasers are parallel. The line laser vision system is fixedly installed on the two adjacent sides of the spreader and protrudes slightly to the outside of the spreader. The exit port of the line laser and the camera lens are both vertically downward, and the laser line projected by the line laser is perpendicular to the edge of the container. , and can be projected onto the upper surface of the placed container, and the field of view of the camera can cover the position where the laser line is projected.

[0025] The camera can be configured with a filter matching the laser band to...

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Abstract

The invention relates to a measuring system and method for stacking alignment of containers. The technical scheme is as follows: two or more line laser vision systems are mounted in a lifting appliance, when the systems work, processors acquire images of two cameras in real time, extract laser lines projected to upper top surfaces of placed containers on lower layers from each image and compare and calculate positions of all sides and rotation angles to be adjusted for accurate stacking of the containers according to lengths of the laser lines, and stacking alignment of the containers on upper and lower layers is realized.

Description

technical field [0001] The invention relates to the field of visual measurement and mechanical automation, in particular, the visual measurement system on the spreader is used to realize the stacking and alignment of the container with the lower container during placement. Background technique [0002] In container terminals or freight yards, containers are often stored stacked together, sometimes up to nine layers high. When stacking containers, the container crane needs to align the upper container with the lower container, otherwise it may cause the container stack to collapse. Due to the high stacking height, the crane driver is far away from the container or the viewing angle is not good, the operation is difficult, and the driver's skill requirements are high, which greatly affects the efficiency of container loading and unloading operations. In order to improve the automation level of container stacking and hoisting operations, it is necessary to automatically measur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B11/00G01C15/00
Inventor 于起峰张红良张小虎曹动
Owner NAT UNIV OF DEFENSE TECH
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