KR-102965318-B1 - METHOD, DEVICE, AND SYSTEM FOR CARGO INPUT-BASED LOGISTICS PROCESSING FOR IMPROVED LOAD BALANCING EFFECT

Abstract

One embodiment of the present invention relates to a control technology for improving the efficiency of a sorting process in a logistics automation system, and in particular, to a cargo input-based logistics processing method, apparatus, and system for an improved load balancing effect, wherein the driving speed of an induction conveyor is variably controlled in multiple stages according to the carrier state of a main sorter, thereby minimizing the frequency of induction stopping and maximizing the load balancing effect.

Inventors

• 이재우

Dates

Publication Date

20260513

Application Date

20251204

Claims (3)

1. A cargo input-based logistics processing method for an improved load balancing effect, which controls an induction conveyor that feeds cargo toward a main sorter in which multiple carriers move in a circulating motion, A step of detecting, through a sensor, whether cargo is loaded on a preceding carrier on a main sorter and on a subsequent carrier following the preceding carrier; When the aforementioned preceding carrier is in a state where cargo is not loaded, a step of operating the preceding induction closest to the transition at a first speed to transfer the cargo loaded on the preceding induction to the preceding carrier; When the preceding carrier is in a cargo-loaded state and the succeeding carrier is in a cargo-unloaded state, a step of operating the succeeding induction following the preceding induction at a second speed to transfer the cargo loaded on the succeeding induction to the preceding induction; When both the preceding carrier and the succeeding carrier are in a cargo-loaded state, the operation of the preceding induction and the succeeding induction is stopped to halt the movement of the cargo loaded on the preceding induction and the succeeding induction and to maintain a standby state for input; the method comprising: The above first speed is controlled to be greater than the second speed, and The step of transferring cargo loaded in the aforementioned subsequent induction to the preceding induction is: The method includes the step of operating the aforementioned preceding induction at a second speed to transfer cargo loaded on the preceding induction to the transition; The step of transferring cargo loaded in the aforementioned subsequent induction to the preceding induction is: A step of measuring the actual transfer time during which the leading edge of a cargo passes through the section from the discharge detection sensor located at the end of the trailing induction to the entry detection sensor located at the leading induction; A step of calculating the time deviation between the 'reference transfer time calculated based on the correlation between the pre-set physical separation distance between the aforementioned subsequent induction and the aforementioned preceding induction and the aforementioned second speed' and the actual transfer time; If the above time deviation has a positive value greater than 0 and exceeds a preset allowable error range, a step of calculating a first correction value based on the deviation; and A step of reflecting the above-mentioned first correction value in the second speed; further comprising Cargo input-based logistics processing method for improved load balancing effect
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Description

Method, Device, and System for Cargo Input-Based Logistics Processing for Improved Load Balancing Effect The following embodiments relate to control technology for improving the efficiency of the sorting process in a logistics automation system, and in particular to a cargo input-based logistics processing method, apparatus, and system for an improved load balancing effect, wherein the driving speed of an induction conveyor is variably controlled in multiple stages according to the carrier status of the main sorter, thereby minimizing the frequency of induction stopping and maximizing the load balancing effect. Generally, in a logistics center's sorting system, randomly supplied cargo is injected into each tray or carrier of the main sorter via an induction conveyor. Conventional induction control technology has adopted the so-called 'Stop-and-Go' method. This is a method in which the induction belt is completely stopped when the target carrier is already occupied (Full), waits until the next empty carrier (Empty) arrives, and then restarts the motor to load the cargo. However, to prevent this bottleneck, a passive load balancing technique was used to artificially limit the cargo input of the upstream induction. This prevented the system from utilizing 100% of its theoretical capacity, which caused a decrease in throughput. Furthermore, without expensive precision measuring equipment such as encoders, it was difficult to detect belt slip or cargo sliding, which resulted in input timing misalignment or forced input without considering the shape or angle of the cargo, leading to jamming or overhang accidents within the sorter. FIG. 1 is a schematic diagram showing a cargo input-based logistics processing system for an improved load balancing effect according to an embodiment of the present invention. FIGS. 2 and FIGS. 3 are flowcharts illustrating a cargo input-based logistics processing method for an improved load balancing effect according to an embodiment of the present invention. FIG. 4 is a flowchart illustrating the step of transferring cargo loaded in a subsequent induction to a preceding induction of a cargo input-based logistics processing method for an improved load balancing effect according to an embodiment of the present invention. Hereinafter, embodiments are described in detail with reference to the attached drawings. However, various modifications may be made to the embodiments, and thus the scope of the patent application is not limited or restricted by these embodiments. It should be understood that all modifications, equivalents, and substitutions to the embodiments are included within the scope of the rights. Specific structural or functional descriptions of the embodiments are disclosed for illustrative purposes only and may be modified and implemented in various forms. Accordingly, the embodiments are not limited to the specific disclosed forms, and the scope of this specification includes modifications, equivalents, or substitutions that fall within the technical concept. Terms such as "first" or "second" may be used to describe various components, but these terms should be interpreted solely for the purpose of distinguishing one component from another. For example, the first component may be named the second component, and similarly, the second component may be named the first component. When it is stated that a component is "connected" to another component, it should be understood that it may be directly connected to or joined to that other component, or that there may be other components in between. The terms used in the embodiments are for illustrative purposes only and should not be interpreted as intended to be limiting. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this specification, terms such as "comprising" or "having" are intended to indicate the existence of the features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, and should be understood as not precluding the existence or addition of one or more other features, numbers, steps, actions, components, parts, or combinations thereof. In particular, where a 'step' in this specification is described as 'comprising' one or more detailed steps or sub-steps, said 'step' may be interpreted as including its own basic processing step while simultaneously performing the described detailed steps as well. For example, if it is stated that 'a step of doing B to A' includes 'a step of doing D to C; a step of doing F to E; and a step of doing H to G,' the 'step of doing B to A' may be interpreted not merely as the basic operation of doing B to A, but as a configuration that performs detailed procedures together, such as a step of doing D to C, a step of doing F to E, and a step of doing H to G. Accordingly, the above configuration does not exclude various sub-procedures included within the scope of execution of the corresponding step