System and method for automatically detecting shiploader article position two-dimension laser scanning radar

Abstract

A ship loader level two-dimensional laser scanning radar automatic detecting system and a method relates to the automatic detecting technical field, wherein, the system comprises two sets of laser scanning devices, an industrial control main frame and an image pick-up device; each laser scanning device comprises a two-dimensional laser radar, a servomotor, a shaft coupling, a rotating main shaft, a limit and zero sensor, a bearing seat containing a bearing, a contracting brake device, a laser radar back support and an L-shaped mounting bottom plate; the image pick-up device comprises a pickup camera and a tripod head. By means of the realtime scanning of the two-dimensional laser radar, the invention collects related data of a ship cabin, a loading chute and material; meanwhile, the invention provides a device realizing realtime display of the status of the ship cabin, the loading chute and material stacking as well as corresponding detection and data processing method. The system realizes three-dimensional scanning of the ship loader and material by means of the two-dimensional laser scanning radar which is combined with the servo motor and a motion control card. In addition, the invention can realizes less than 200mm positioning error of hatchway position and less than 100mm surface topography identification error.

Description

technical field [0001] The invention relates to a system and method in the technical field of automatic detection, in particular to a two-dimensional laser scanning radar automatic detection system and method for the material level of a ship loader. Background technique [0002] The growing integration of global trade has boosted the demand for bulk material transportation across the globe. According to the introduction of "2007 International Dry Bulk Shipping Market Outlook" published by Hao Yongrui in "China Water Transport" [(2007) 3: 26-27], the total shipping capacity of the world's dry bulk shipping fleet will reach about 382 million tons in 2007. An increase of 4.99% over 2006, with a net increase of 18.17 million tons of transport capacity. Then comes the demand for large-scale, efficient bulk cargo automatic loading and unloading equipment. Stackers and reclaimers are two major pieces of equipment in port operations. Because the working part is far away from the ...

AI Technical Summary

Problems solved by technology

However, compared with two-dimensional laser scanning radar, microwave radar and ultrasonic wave have too large wavelength, and it is not easy to form diffuse reflection in practical applications, and there is a strong angle limit, which limits the detection range.

At the same time, microwave radar and ultrasonic waves are particularly prone to multiple reflections, resulting in a lot of noise interference in the return signal, which seriously affects the measurement results

However, the accuracy of α-rays is poor, the installation is difficult, and it is extremely harmful to the human body, so it is generally not used in open-air places.

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