An optimization method for overturning and placing containers in container yards under the condition of incomplete pick-up information

A container yard and container technology, which is applied to storage devices, transportation and packaging, conveyor control devices, etc., can solve the problems of high turnover rate of multi-layer stacking container yards and reducing the secondary turnover rate of container yards.

Active Publication Date: 2020-04-14
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0012] In order to solve the problem of container turning over and placement optimization under the condition of incomplete pick-up information, the high turning over rate of multi-layer stacked container yards and how to reduce the secondary turning over rate of container yards, this application provides an incomplete Optimal method for overturning and dropping off containers in container yards based on pick-up information

Method used

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  • An optimization method for overturning and placing containers in container yards under the condition of incomplete pick-up information
  • An optimization method for overturning and placing containers in container yards under the condition of incomplete pick-up information
  • An optimization method for overturning and placing containers in container yards under the condition of incomplete pick-up information

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0075] The layout of the container yard for this embodiment is schematically shown as figure 1 As shown, each container area is composed of multiple bays, and each container bay is composed of multiple stacks (Stacks). Each stack can stack multiple containers, which is called a container layer (Tie) along the height direction, which can The position where a container is stacked is called a bin. When picking up boxes at the yard (including customer pick-up and shipping pick-up), the inconsistency between the order of pick-up and the stacking position will lead to the overturning operation, that is, the target box to be extracted is in other boxes (referred to as "obstructed boxes" or "to-be-turned boxes") The lower layer of the container needs to be overturned, and the upper layer of the barrier box is overturned to other container stacks. The optimal problem of overturning and placement in the container yard refers to: when the overturning of the obstructed container is carr...

Embodiment 2

[0095] According to a certain container terminal yard pick-up operation data as the background, the experiment of the technical scheme of the present invention is designed, and its beneficial effect is analyzed. According to the current main container yard bay size, five bay bay scale working conditions are designed, and the parameters are shown in Table 1; the pick-up time of the container is divided into 9 time periods, and the distribution probability of each time period is equal; The distribution of the stack is uniform. Each working condition is simulated to generate 100 calculation examples, and its effect is statistically analyzed.

[0096] Table 1 The parameters of the shell position of the experimental container

[0097]

[0098] Analysis and comparison of the effects of the technical solutions of the present application: two technical solutions (OH and IH for short) in the prior art method (3) in the background technology. It should be noted that the above two s...

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Abstract

The invention discloses a container yard turnover falling optimization method under incomplete container picking information. The method comprises the following steps of performing simulation learningon a designed Q value table by utilizing container yard container picking operation simulation to obtain a Q value table after simulation learning; and step 2, dynamically generating an action instruction of the container turnover falling by utilizing the Q value table after learning and an action selection strategy, selecting a container falling position of a container to be turned over according to the action instruction, and adaptively updating the Q value table according to execution feedback of the action instruction in the yard container picking operation process. By adopting the method, self-adaptive adjustment of a container turnover falling optimization instruction in the yard container overturning operation environment can be realized through Q value learning in the container picking process; and the learning and convergence speed of a Q algorithm is increased, and the container turnover rate of a multi-layer stacking container yard and the secondary container overturning rate of the container yard are lowered.

Description

technical field [0001] The invention belongs to the technical field of automobiles and transportation, and specifically relates to an optimal method for overturning and placing containers in a container yard under incomplete container pick-up information. Background technique [0002] 90% of the freight volume of international trade is completed by sea through the port. Container transportation has the advantages of safety, efficiency, and ease of automation. It has developed rapidly since it appeared in the 1950s and has become the main form of shipping. With the development of economic international trade and the continuous growth of container freight volume, container terminals and yards are required to have greater throughput capacity, higher operating efficiency and more economical operating costs. The optimization of container turnover rate in the yard is one of the keys for container terminals and yards to improve throughput capacity and operating efficiency, and red...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B65G63/00B65G43/00B65G47/248
CPCB65G43/00B65G47/248B65G63/004B65G2201/0258B65G2203/0225
Inventor 周鹏飞叶倩倩
Owner DALIAN UNIV OF TECH
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