CN117657644A - Warehouse management system - Google Patents

Warehouse management system Download PDF

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Publication number
CN117657644A
CN117657644A CN202211024130.XA CN202211024130A CN117657644A CN 117657644 A CN117657644 A CN 117657644A CN 202211024130 A CN202211024130 A CN 202211024130A CN 117657644 A CN117657644 A CN 117657644A
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CN
China
Prior art keywords
target
container
minimum
inventory
order
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Application number
CN202211024130.XA
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Chinese (zh)
Inventor
赵震
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Beijing Jizhijia Technology Co Ltd
Original Assignee
Beijing Jizhijia Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by Beijing Jizhijia Technology Co Ltd filed Critical Beijing Jizhijia Technology Co Ltd
Priority to CN202211024130.XA priority Critical patent/CN117657644A/en
Priority to PCT/CN2023/113040 priority patent/WO2024041414A1/en
Publication of CN117657644A publication Critical patent/CN117657644A/en
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G1/00—Storing articles, individually or in orderly arrangement, in warehouses or magazines
    • B65G1/02—Storage devices
    • B65G1/04—Storage devices mechanical
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G1/00—Storing articles, individually or in orderly arrangement, in warehouses or magazines
    • B65G1/02—Storage devices
    • B65G1/04—Storage devices mechanical
    • B65G1/12—Storage devices mechanical with separate article supports or holders movable in a closed circuit to facilitate insertion or removal of articles the articles being books, documents, forms or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G1/00—Storing articles, individually or in orderly arrangement, in warehouses or magazines
    • B65G1/02—Storage devices
    • B65G1/04—Storage devices mechanical
    • B65G1/137—Storage devices mechanical with arrangements or automatic control means for selecting which articles are to be removed

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Warehouses Or Storage Devices (AREA)

Abstract

The invention discloses a warehouse management system, which comprises an order container, a warehouse container and a movable carrier for carrying at least one of the order container and the warehouse container. The server determines a target movable carrier in which the target inventory container is located according to at least one of the minimum loading and unloading quantity of the inventory container and the minimum carrying quantity of the movable carrier. The warehouse management system further includes a workstation for docking the movable carrier, a handling device for moving the order containers and the target inventory containers between the workstation and the movable carrier, and a handling device configured for moving the movable carrier carrying the order containers and the target movable carrier carrying the target inventory containers to the same workstation such that the at least one order container and the at least one target inventory container perform a picking operation at the workstation.

Description

Warehouse management system
Technical Field
The invention relates to the technical field of warehousing, in particular to a warehousing management system.
Background
As the business volume of the e-commerce industry increases, the difficulty and complexity of goods storage and scheduling are gradually increased in order to meet the timeliness requirement of shipment as much as possible.
In the operation mode of a conventional warehouse, a large number of workers generally walk to an inventory area for storing goods to find goods required by orders, and then bring the found goods back to an operation area for sorting, packing and the like. Alternatively, some warehouses use robots to transport a large number of items in an inventory area to an operating area together, avoiding frequent shutdowns of personnel to and from the inventory area and the operating area. Even if robots are used to replace manual handling, the staff is still required to find out the goods required by the orders from a lot of stock goods on site, and likewise, the subsequent operations of sorting, packing, shipping and the like are completed. The existing operation modes are based on the fact that a large amount of manpower is used for picking and distributing goods, so that the operation modes are easily influenced by thinking and physical strength of people, uncertainty exists in whether each link is normally operated, and in a word, the efficiency of goods circulation and delivery in a warehouse is difficult to improve.
In view of the defects existing in the existing warehouse operation mode, the invention provides a warehouse management system.
Disclosure of Invention
In the summary, a series of concepts in a simplified form are introduced, which will be further described in detail in the detailed description. The summary of the invention is not intended to define the key features and essential features of the claimed subject matter, nor is it intended to be used as an aid in determining the scope of the claimed subject matter.
To at least partially solve the above problems, in one aspect, the present invention discloses a warehouse management system comprising:
an order container having a space for accommodating goods;
an inventory container in which items of a target order are stored;
a movable carrier for carrying at least one of the order container and the inventory container;
a server for determining a target stock container and a target movable carrier where the target stock container is located according to at least one of the minimum loading and unloading quantity of the stock container and the minimum carrying quantity of the movable carrier, wherein,
the minimum loading and unloading quantity of the stock containers is the minimum quantity of the stock containers where all commodities meeting the target order are located;
The minimum carrying quantity of the movable carriers is the minimum quantity of the movable carriers where all commodities meeting the target order are located;
a workstation for docking the movable carrier;
a handling apparatus configured to move the order container and the target inventory container between the workstation and the movable carrier;
a handling device configured to move the movable carrier carrying the order containers and the target movable carrier carrying the target inventory containers to the same workstation such that at least one of the order containers and at least one of the target inventory containers perform a picking operation at the workstation.
By using the warehouse management system, a many-to-many distributed network of the target order corresponding to the inventory containers of the order containers can be established, and the whole-flow operation of goods from the inventory containers to the order containers can be planned and scheduled according to the optimization targets of the inventory container loading and unloading quantity, the storage surface operation quantity, the movable carrier carrying quantity and the like, so that the associated inventory containers and the order containers are ensured to be carried to the same workstation as much as possible for picking operation, the timeliness of completing the target order is ensured, a large amount of manpower required by a traditional operation mode is avoided, and the circulation efficiency of the goods is improved.
In a preferred embodiment, the minimum inventory container loading/unloading quantity is the minimum quantity of the inventory containers in which all of the items satisfying a single said target order are located; or the minimum loading and unloading quantity of the stock container is the minimum quantity of the stock container where all commodities meeting all the target orders are located.
In a preferred embodiment, the minimum number of mobile carriers is the minimum number of mobile carriers on which all of the items satisfying a single target order are located; or the minimum carrying quantity of the movable carriers is the minimum quantity of the movable carriers where all commodities meeting all the target orders are located.
In a preferred embodiment, in the case that the server determines a target inventory container according to both the inventory container minimum handling number and the movable carrier minimum handling number, the server is configured to determine that the inventory container corresponding to the inventory container minimum handling number is the target inventory container when the number of movable carriers in which the inventory container corresponding to the inventory container minimum handling number is located is equal to the movable carrier minimum handling number.
In a preferred embodiment, the server is further configured to compare the number of movable carriers in which the inventory container that satisfies the minimum number of all the articles of the single target order is located with the number of movable carriers in which the inventory container that satisfies the minimum number of all the articles of the target order is located, and determine the smaller one as the number of movable carriers in which the inventory container that corresponds to the minimum loading and unloading number of the inventory containers is located.
In a preferred embodiment, in the case that the server determines a target inventory container according to both the inventory container minimum handling number and the movable carrier minimum handling number, the server is configured to determine that the inventory container corresponding to the inventory container minimum handling number is the target inventory container when the number of movable carriers in which the inventory container corresponding to the inventory container minimum handling number is located is greater than a predetermined coefficient multiple of the movable carrier minimum handling number.
In a preferred embodiment, the predetermined coefficient is 1.2.
In a preferred embodiment, the movable carrier is configured with a plurality of storage surfaces, each of the storage surfaces receiving a plurality of the inventory receptacles, and
The server is further configured to determine a target stock container and a target movable carrier in which the target stock container is located according to the minimum operation quantity of the stock surface, wherein
The minimum operation quantity of the storage surfaces is the minimum quantity of the storage surfaces where all commodities meeting the single target order are located; or alternatively
The minimum operation quantity of the storage surfaces is the minimum quantity of the storage surfaces where all commodities meeting all the target orders are located.
In a preferred embodiment, the target order includes a plurality of SKUs, each SKU having a commodity category and a commodity quantity;
the server is further configured to determine a targeted inventory container that is hit based on a degree of matching of the items stored in the inventory container with the targeted order in terms of item type and item quantity.
In a preferred embodiment, the server is further configured to:
and if the commodity type and the commodity number of the commodities stored in the target stock container are the same as those of the target order, replacing the target stock container with the order container associated with the target order.
In a preferred embodiment, the server is further configured to:
If the number of the commodity kind or the commodity number of the commodity stored in the target stock container is equal to or less than the number of the commodity kind or the commodity number of the target order and is greater than half of the number of the commodity kind or the commodity number of the target order, the target stock container is replaced with an order container associated with the target order.
In a preferred embodiment, the server is further configured to:
if it is determined that there are a plurality of target movable carriers, the target movable carrier with the largest number of target stock containers carried is determined to be handled first.
In a preferred embodiment, the server is further configured to: determining a carrying route so that mileage or time for carrying the target movable carrier to the workstation by the carrying apparatus is minimized.
In a preferred embodiment, the warehouse management system includes a plurality of available handling devices, the plurality of available handling devices having different priorities, the priorities of the handling devices being determined based on at least one of a distance to a target movable carrier, a distance to a workstation.
In a preferred embodiment, the warehouse management system further comprises a queuing area corresponding to the workstation, the queuing area being capable of accommodating at least one of the mobile carriers. The server is further configured to change a priority of the plurality of available handling devices or a handling route of the handling device based on queuing information regarding a target movable carrier currently being queued in the queuing area.
In a preferred embodiment, the server is further configured to change the priorities of a plurality of available handling devices or the handling routes of the handling devices according to the task volume information related to the target order.
In a preferred embodiment, said warehouse management system includes j of said movable vehicles, b for the ith SKU of the ith said target order o，i Defined as the number of ith said SKU in the ith said target order, willHit of the 1 st storage location of the kth storage surface defined as the jth said movable carrier on the jth said target order will +.>The number of i of said SKUs defined as the 1 st storage location of the kth storage surface of the jth said movable carrier hitting the ith said target order will>Defining the number of ith SKUs in the ith storage location of the kth storage surface of the jth movable carrier, the warehouse management system configured to cause:
wherein the warehouse management system is configured to calculate:
in a preferred embodiment, the warehouse management system is further configured to calculate:
in a preferred embodiment, the warehouse management system is further configured to calculate:
Drawings
The following drawings of embodiments of the present invention are included as part of the invention. Embodiments of the present invention and their description are shown in the drawings to explain the principles of the invention. In the drawings of which there are shown,
fig. 1 is a schematic block diagram of the configuration of a server of a warehouse management system according to a preferred embodiment of the present invention.
Detailed Description
In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art that embodiments of the invention may be practiced without one or more of these details. In other instances, well-known features have not been described in detail in order to avoid obscuring the embodiments of the invention.
In the following description, a detailed structure will be presented for a thorough understanding of embodiments of the present invention. It will be apparent that embodiments of the invention may be practiced without limitation to the specific details that are set forth by those skilled in the art.
The utility model provides a warehouse management system can improve the operation mode that current warehouse is based on manpower to utilize automation mechanized operation to improve management granularity and circulation efficiency.
The warehouse management system according to the present invention includes various devices that support the circulation of goods through various links. In this context, the warehouse management system is designed for the purpose of fulfilling orders. The warehouse management system includes an order container having a space for accommodating goods so that goods can be placed therein. The warehouse management system includes an inventory container in which at least one item has been stored, where the inventory container is defined as an item in which a target order is stored. After several steps, the goods in the stock container will eventually be placed in the order container to be transferred in association with the order to the next link, e.g., for shipment, etc. It will be appreciated that the attributes of the stock container and the order container may be distinguished by an electronic tag, such as writing data in a radio frequency identification electronic tag, or the like. Alternatively, the properties of the stock container and the order container may be differentiated by physical structure, such as being painted or adhered with different colors, numerical indicia. Without being limited to the above, the attributes of the inventory container and the order container may be at least manually and/or electronically identified.
To achieve automatic circulation of goods, the warehouse management system includes a server configured to calculate an optimal solution for transferring goods from inventory receptacles to order receptacles with respect to an order. It will be appreciated that the number, location, and information of the goods stored therein of the inventory receptacles are stored in the server so that the server performs the goods circulation management. Similarly, order related information is stored in the server. This will be described in detail below.
The warehouse management system includes a movable carrier for carrying at least one of an order container and an inventory container. In this embodiment, the mobile carrier can be used to carry both order containers and inventory containers. For example, the movable carriers may include a first movable carrier for carrying only order containers, a second movable carrier for carrying only inventory containers, and a third movable carrier for carrying both order containers and inventory containers. Alternatively, the movable carrier may be provided with wheels, so that it can be moved easily by the wheels. The movable carrier is preferably configured to be able to carry a plurality of order containers and/or a plurality of inventory containers. In other words, the movable carrier is a different level unit for holding goods than the order container or the stock container, i.e., a higher level unit, and the order container and the stock container are lower level units of the movable carrier. Preferably, other hierarchical units may be set between the hierarchical units of the movable carrier and the hierarchical units of the order container and the inventory container. For example, the mobile carrier may be configured with multiple storage surfaces, where each storage surface may house multiple inventory and/or order containers, facilitating picking and placing inventory and/or order containers from different directions. In this case, the storage surface is an intermediate level unit between the order container, the inventory container, and the movable carrier. The different level units of the warehouse management system for holding goods are not limited to this embodiment. The server is configured to store information about different hierarchical units of the warehouse management system, such as information about the number, location, and the goods stored therein, of the mobile carriers, the storage areas, the order containers, and the inventory containers, and combinations thereof.
The warehouse management system includes a workstation for docking the movable carrier. For example, one workstation may be sized and configured to dock two movable vehicles, four movable vehicles, etc. According to the invention, at least one stock container and at least one order container are to be arranged at a workstation for an operation in respect of transferring goods from the stock container to the order container in respect of an order. Such operations include picking operations of the order with the good. The picking operation may be performed by a worker or robotic arm, depending on factors such as whether the size of the goods is appropriate and whether the shape is regular. Thus, the workstation is further configured to be capable of holding at least one inventory container and at least one order container. In addition, the warehouse management system also comprises a queuing area corresponding to the workstation. As the name suggests, the queuing area provides space for mobile carriers that cannot dock with the workstation and need to wait. The queuing area may be sized and configured to accommodate at least one movable carrier. Preferably, the queuing area of the workstation may accommodate more mobile carriers than the workstation itself. The queuing area is located close to the workstation, but is located far from the inventory area of the warehouse, which is equivalent to preparing for the operation of the next batch of goods at the workstation in advance, thus facilitating a reduction in the time required for the transfer of the goods from the inventory area to the shipment.
In a preferred embodiment, the server is configured to calculate inventory containers that need to be entered into a workstation for picking or the like in an optimal scenario for transferring goods from inventory containers to order containers with respect to an order. These inventory receptacles will be labeled as target inventory receptacles by the server. At the same time, the mobile carrier carrying the target inventory container will be marked by the server as the target mobile carrier. The determination of the target inventory receptacles and the target movable carriers will be described in detail later.
The warehouse management system includes a handling device configured to move order containers and inventory containers, particularly target inventory containers for target orders, between the workstation and the movable carrier. For example, the handling device may take and place order or inventory containers carried by the mobile carrier at the workstation, and the handling device may also take and place order or inventory containers in the workstation at the mobile carrier. The handling equipment may be configured with telescoping bars, slide rails, suction cups, etc. to reliably move the order and inventory receptacles in various directions.
The warehouse management system includes a handling device configured to move the movable carrier carrying the order containers and the movable carrier carrying the inventory containers to the same workstation. In particular, in the present embodiment, the handling device is configured for moving the movable carrier carrying the order containers and the target movable carrier carrying the target inventory containers to the same workstation, such that at least one order container and at least one target inventory container can be subjected to a picking operation at this one workstation. Because both the order container and the target stock container for the order have entered the same workstation for picking operations, the staff no longer need to run frequently between the stock area where the target stock container was originally located and the workstation, which greatly reduces the labor intensity and workload of the staff and improves the efficiency of cargo management and circulation.
As previously described, an inventory container is defined herein as a container in which items needed for a target order are stored. However, although the goods stored in the stock container are required for the target order, the quantity of goods, the kind of goods, of the goods therein do not necessarily match the target order exactly. Briefly, the items in one inventory container may not be sufficient to satisfy the needs of a target order, and the items in several inventory containers together may exceed the amount required for the target order. Thus, not all inventory receptacles storing items required for a target order need be sent directly to the workstation, but rather the target inventory receptacles for a particular target order need be selectively determined. Preferably, the target inventory receptacles are selectively determined so that the goods therein exactly meet the requirements of the target order. On this basis, the server may further optimize the selection of target inventory containers in accordance with logic of other aspects.
For example, a configuration of a server of a warehouse management system according to a preferred embodiment of the present invention is described with reference to fig. 1.
In a preferred embodiment, the server determines a target inventory container based on at least one of a minimum inventory container handling number and a minimum movable vehicle handling number, and determines a target movable vehicle on which the target inventory container is located. In this context, the definition of "minimum inventory container loading and unloading quantity" is the minimum quantity of inventory containers in which all of the items that satisfy the target order are located. This value relates to the number of operations the handling device is to take out and place a target inventory container in a target mobile carrier at the workstation and thus also relates to the length of time the handling device is operated. For example, in the case where the target order is 5 items a, if there are stock containers respectively containing 1, 2, 3 items a, it is obvious that the two stock containers respectively containing 2, 3 items a are determined as target stock containers to minimize the number of stock container loading and unloading, although the five stock containers each containing 1 item a are determined as target stock containers, or the three stock containers each containing 1 item a and one stock container containing 2 items a are determined as target stock containers, or the two stock containers each containing 2 items a and one stock container containing 1 item a are determined as target stock containers. In this case, if the server determines the target inventory container from the inventory container minimum loading and unloading number, the target inventory container is determined such that the inventory container minimum loading and unloading number is two.
Herein, the definition of "minimum number of movable carriers" is the minimum number of movable carriers in which all goods satisfying the target order are located. This value relates to the number of times the handling device is handling the movable carrier in which the target stock container is located to the workstation and thus also relates to the length of time the handling device is handling. For example, in the case where the target order is 5 items a, if there is one movable pallet carrying inventory containers each containing 1, 2 items a, and another movable pallet carrying inventory containers each containing 3 items a, although it is determined in the foregoing several schemes that the target inventory containers each satisfy all the items of the target order, five inventory containers each containing 1 item a are determined as target inventory containers, or three inventory containers each containing 1 item a and one inventory container each containing 2 items a are determined as target inventory containers, or two inventory containers each containing 2 items a and one inventory container containing 1 item a are determined as target inventory containers so that the movable carrier carries the smallest amount (here, one), and two inventory containers each containing 2 items a and 3 items a are determined as target inventory containers so that the movable carrier carries the largest amount (here, two items a). In this case, if the server determines the target stock container from the movable carrier minimum handling number, the target stock container is determined such that the movable carrier minimum handling number is one.
According to one embodiment of the invention, the server may be configured to determine a target inventory container based on both the minimum inventory container handling number and the minimum movable carrier handling number, and to determine a target movable carrier on which the target inventory container is located. That is, unlike the above-described case where only the minimum number of inventory container loading and unloading is considered or only the minimum number of movable carrier transportation is considered, in this case, both the minimum number of inventory container loading and unloading and the minimum number of movable carrier transportation are desired.
Further preferably, the server may be configured to determine that the inventory container corresponding to the minimum number of portable carriers is the target inventory container when the number of portable carriers in which the inventory container corresponding to the minimum number of portable carriers is located is greater than a predetermined coefficient times the minimum number of portable carriers. The predetermined coefficient is greater than 1. For example, the predetermined coefficient is 1.2. Optionally, when the number of movable carriers in which the inventory containers corresponding to the minimum loading and unloading number of the inventory containers are located is greater than the minimum carrying number of the movable carriers but less than a predetermined coefficient times the minimum carrying number of the movable carriers, determining the inventory container corresponding to the minimum loading and unloading number of the inventory containers as the target inventory container. Continuing with the above illustration, if there is one movable pallet carrying inventory containers each containing 1, 2, and another movable pallet carrying inventory containers each containing 3 articles a, the inventory container corresponding to the minimum loading and unloading number of inventory containers includes two inventory containers each containing 2, 3 articles a, the number of movable carriers in which the two inventory containers are located is two, and the minimum number of movable carriers is one (including the three schemes described above: five inventory containers each containing 1 article a are determined as target inventory containers, or three inventory containers each containing 1 article a and one inventory container each containing 2 articles a are determined as target inventory containers, or two inventory containers each containing 2 articles a and one inventory container each containing 1 article a are determined as target inventory containers). Obviously, the number of movable carriers in which the stock containers corresponding to the minimum loading and unloading number of the stock containers are located is greater than a predetermined factor, for example, 1.2 times, the number of the minimum carrying numbers of the movable carriers by one, and the target stock container is determined such that the minimum carrying number of the movable carriers is one. That is, when the target stock containers corresponding to the minimum loading and unloading number of the stock containers and the minimum conveyance number of the movable carriers are not identical, the minimum conveyance number of the movable carriers can be satisfied preferentially as long as the conditions of the server arrangement are satisfied.
Further preferably, the server may be configured to determine, when the number of movable carriers in which the inventory container corresponding to the minimum loading and unloading number of inventory containers is located is equal to the minimum conveyance number of movable carriers, that the inventory container corresponding to the minimum loading and unloading number of inventory containers is the target inventory container. As another example, in the case where the target order is 5 commodities a, if there is one movable pallet carrying inventory containers respectively containing 1, 2 commodities a and another movable pallet carrying inventory containers respectively containing 2, 3 commodities a, the inventory container corresponding to the minimum loading and unloading number of inventory containers includes two inventory containers respectively containing 2, 3 commodities a, the number of movable carriers in which the two inventory containers are located is one, and the minimum number of movable carriers is also one, that is, the number of movable carriers in which the inventory container corresponding to the minimum loading and unloading number of inventory containers is equal to the minimum number of movable carriers. It can be seen that, when the minimum loading and unloading number of the stock containers and the minimum carrying number of the movable carriers respectively correspond to the target stock containers, the minimum loading and unloading number of the stock containers and the minimum carrying number of the movable carriers can be satisfied at the same time according to the above configuration of the server. This is an ideal case when the server takes the optimal solution for the target order in the logic of this embodiment.
The inventory container minimum handling number is illustratively explained above with only one target order as an example. That is, according to one embodiment of the invention, the minimum inventory container loading/unloading amount may be the minimum amount of inventory containers in which all of the items that satisfy a single target order are located. It will be appreciated that in alternative embodiments, the minimum inventory container loading/unloading amount may be the minimum amount of inventory containers in which all of the items that satisfy all of the target orders are located. In this case, the determination of the minimum loading and unloading quantity of the stock containers appears to be more complex than the above illustration, however, for servers with arithmetic processing capabilities, whether individual orders or all orders differ only in the objective of optimization. An example of an algorithm for determining the minimum loading and unloading number of inventory receptacles by the server according to the invention will be described hereinafter.
In a preferred embodiment, the server is further configured to compare the number of movable carriers in which the minimum number of inventory receptacles for all items satisfying the single target order are located with the number of movable carriers in which the minimum number of inventory receptacles for all items satisfying the full target order are located, and to determine the smaller one as the number of movable carriers in which the inventory receptacles corresponding to the minimum loading and unloading number of inventory receptacles are located. This configuration of the server ensures that the minimum inventory container handling quantity is always the minimum for one of a single order and all orders, further ensuring that the target inventory container determined from the inventory container minimum handling quantity and the movable carrier minimum handling quantity is closer to ideal.
Similarly, the minimum number of movable carriers handled is illustratively explained above with only one target order as an example. That is, according to one embodiment of the present invention, the minimum number of mobile carriers may be the minimum number of mobile carriers where all goods that satisfy a single target order are located. It will be appreciated that in alternative embodiments, the minimum number of mobile carriers may be the minimum number of mobile carriers where all of the items that satisfy all of the target orders are located. In this case, the determination of the minimum number of movable carriers appears more complex than the above illustration, however, for servers with arithmetic processing capabilities, whether a single order or all orders differ only in the objective of optimization. An example of an algorithm for determining the minimum number of portable carriers carried by the server according to the invention will be described hereinafter.
As previously described, the movable carrier may have a plurality of storage surfaces that may face in different directions, each of which may house a plurality of inventory receptacles. In this embodiment, the server may be configured to determine the target inventory container and the target mobile carrier on which the target inventory container is located based on the minimum number of operations on the cargo surface. In this context, the definition of "minimum operational quantity of a storage surface" is the minimum quantity of storage surfaces on which all items satisfying a single target order are located, or the minimum quantity of storage surfaces on which all items satisfying all target orders are located. This value relates to the number of directional operations of the handling device for retrieving and placing the target inventory receptacles from the storage surface of the mobile carrier at the workstation and also relates to the duration of the directional operations of the handling device. For example, in the case where the target order is 5 items a, if there is a movable carrier in which stock containers each containing 1, 2 items a are stored in one stock surface, stock containers each containing 1 item a are stored in the other stock surface, five stock containers each containing 1 item a are determined as target stock containers, three stock containers each containing 1 item a and one stock container each containing 2 items a are determined as target stock containers, or two stock containers each containing 2 items a and one stock container containing 1 item a are determined as target stock containers, the stock surface operation amount can be minimized (here, one) while two stock containers each containing 2 items a and 3 items a are determined as target stock containers, and the stock surface operation amount is conversely made larger (here, two). In this case, if the server determines the target stock container from the minimum number of operations of the storage surface, the target stock container is determined such that the minimum number of operations of the storage surface is one.
In an alternative embodiment, the server may also be configured to determine the target inventory container and the target movable carrier on which the target inventory container is located based on a combination of the minimum number of operations on the storage surface and at least one of the minimum number of loading and unloading of the inventory container and the minimum number of handling of the movable carrier.
An example of an algorithm executed by the server according to the present invention is described below.
The server according to one embodiment of the invention is configured to calculate for one optimization objective the minimum number of operations for the storage surface for a single order:
the server according to one embodiment of the invention is further configured to calculate for one optimization objective a minimum number of operations of the storage surface for all orders:
the server according to one embodiment of the invention is further configured to calculate for one optimization objective a minimum number of mobile carriers to be handled for all orders:
and the server according to one embodiment of the invention is further configured such that:
wherein the variables in formulas 1 to 9 above can be understood with reference to the following description:
the warehouse management system comprises J movable carriers, wherein the J movable carriers comprise K storage surfaces, and the K storage surfaces comprise L storage positions (each storage position corresponds to one inventory container, namely the i-th inventory container).
And, the warehouse management system has O target orders, an O target order of the O target orders including I minimum inventory units (stock keeping unit, SKU), an I-th SKU for the O target order,
will b o，i Defined as the number of ith SKUs in the nth target order,
-will beDefined as the hit of the 1 st storage location of the kth storage surface of the jth movable carrier to the (o) th target order,
-will beThe 1 st storage location defined as the kth storage surface of the jth movable carrier hits the ith SKU of the jth target order,
-will beDefined as the number of ith SKUs in the ith storage location of the kth storage surface of the jth movable carrier,
formula 4 to formula 9 are constraint conditions for obtaining the minimum value of formula 1 to formula 3, and each formula represents:
-4 represents the required number of I SKUs for which the inventory in L storage locations of K storage surfaces of a total of J shelves meets the o-th order,
5 means that the number of inventory of 1 storage location of k storage surfaces of the j-th shelf hit by the i-th SKU of the total O orders does not exceed the i-th inventory of 1 storage location of k storage surfaces of the j-th shelf,
6 represents the inventory of 1 storage location of the kth order (total I SKUs) on the k storage surfaces of the jth shelf either hit or miss,
7 indicates that the number of inventory of 1 storage location of the k storage surfaces of the jth shelf hit by the ith SKU of the ith order is equal to or greater than zero,
8 indicates that the hit of the o-th order on the inventory of the l storage locations of the k storage surfaces of the j-th shelf is indicated by a "1", the miss is indicated by a "0",
equation 9 represents that the number of inventory of the i-th SKU of the o-th order hitting the i-th storage location of the k storage surfaces of the j-th shelf is an integer.
Based on the above algorithm, a server according to one embodiment of the present invention may calculate an optimal solution for transferring goods from an inventory container to an order container for an order for a particular optimization objective. It is to be understood that the above algorithm is only one example, and that embodiments of the present invention may be implemented based on other optimization objectives or based on other algorithms without departing from the spirit of the invention.
The determination of a target inventory container according to one embodiment of the invention is further explained below.
In general, a target order may include a plurality of SKUs, each of which is in turn defined by a commodity category (e.g., gauge, model, etc.), a commodity quantity, and the like. For example, even if the combination of 1 first brand series a shampoo and 1 first brand series a body wash is used, if the first combination is 1 first 600ml of first brand series b shampoo and 1 second 400ml of first brand series b body wash, and the second combination is 1 first 600ml of first brand series b shampoo and 1 first brand series 600ml of first brand series b body wash, the two combinations do not belong to the same SKU. In other words, in the sense of the present invention, even if other attributes including the number of commodities are the same for SKUs, they cannot be regarded as the same as long as the commodity types (for example, specifications, models, etc.) are different. Defining SKUs by attributes such as the type of merchandise and the number of merchandise actually brings the information of the merchandise stored in the server close to or even in line with the minimum inventory units of the merchandise actually present in the warehouse, thereby facilitating the management of the merchandise by the server based on the information related to SKUs of the merchandise.
According to a preferred embodiment of the present invention, the server is further configured to determine the targeted inventory container that is hit based on the matching degree of the goods stored in the inventory container with respect to the targeted order in terms of the kind of goods and the quantity of goods. The above describes that the server determines the stock container of all the products satisfying the target order as the target stock container based on the minimum loading and unloading number of the stock container, the minimum carrying number of the movable carrier, the minimum operation number of the storage surface, and the like, and in the present embodiment, whether all the products satisfying the target order are determined based on the matching degree of the products stored in the stock container with respect to the product type and the product number of the target order. Still taking the example target order for 5 items a, if there are stock containers containing 1, 2, 3 items a, respectively, it is apparent that the stock container containing 3 items a matches the target order the highest in terms of item type and item quantity, and therefore the stock container will be preferentially pre-defined as the target stock container. Of course, it will be appreciated that the final determination of the target inventory receptacles may also need to be determined based on the minimum inventory receptacle loading and unloading number, the minimum movable carrier handling number, the minimum inventory face handling number, etc., as described above. As another example, in the case where 3 goods a and 2 goods B are required for the target order, if there are an inventory container containing 3 goods a, an inventory container containing 2 goods B, and an inventory container containing 2 goods a and 1 goods B, respectively, then the inventory container containing 2 goods a and 1 goods B is considered to have the highest matching degree with respect to the target order in terms of the goods kind and the goods number, and therefore, the inventory container will be preferentially pre-defined as the target inventory container. The above description is one example of an inventory container "hitting" a target order.
According to a preferred embodiment of the present invention, the server is further configured to replace the target inventory container with the order container associated with the target order if the commodity type and the commodity number of the commodity stored in the target inventory container are the same as the commodity type and the commodity number of the target order. This is a special case where a particular stock container "hits" a target order, i.e., the stock container itself is able to satisfy all of the items (including item type, item quantity, etc.) of the target order bound by the corresponding order container, where the target stock container may be replaced with the corresponding order container in accordance with the present invention. Such replacement may be achieved by replacement of the marks, for example, the modification of the data written to the electronic label mentioned above, or replacement of marks of different colors, numbers, etc. Such replacement may include replacement of the location, such as exchanging an order container located on a first mobile carrier with an inventory container located on a second mobile carrier, such that the replaced order container will be located on the second mobile carrier and the replaced inventory container will be located on the first mobile carrier, in addition to or instead of replacement of the indicia. According to the embodiment, the warehouse management system can save the mental effort, the physical labor and the related data calculation required for picking out the goods meeting the target order requirement from the inventory container and putting the goods into the corresponding order container, and the circulation of the goods from the inventory container to the order container is simpler and more convenient.
In a preferred embodiment, the server is further configured to replace the target inventory container with the order container associated with the target order if the number of item categories or item quantities of items stored in the target inventory container is equal to or less than the number of item categories or item quantities of the target order and greater than half the number of item categories or item quantities of the target order. In this embodiment, the server 'hits' the target order for a certain inventory container with increased latitude. Even if the individual stock container cannot satisfy all the commodities (including the commodity type, the commodity number, etc.) of the target order bound by the corresponding order container, the replacement of the stock container with the corresponding order container can be performed as long as the matching degree of the commodities stored in the stock container with respect to the target order reaches a certain degree, for example, the degree that the mental effort, the physical effort and the related data calculation required for gathering the commodities stored in the stock container with the commodities stored in other stock containers for satisfying all the commodities of the target order multiple times exceed the mental effort, the physical effort and the related data calculation required for replacing the stock container with the corresponding order container. It will be appreciated that in this embodiment, the server's tolerance for "hitting" a target order for a certain inventory container is set to the number of item categories or item quantities for items stored in the target inventory container equal to or less than the number of item categories or item quantities for the target order and greater than half the number of item categories or item quantities for the target order. However, in an embodiment not shown, the tolerance of the server to "hit" a target order for a certain inventory container may also be set such that the number of item types or item numbers of items stored in the target inventory container is equal to or less than the number of item types or item numbers of the target order and greater than two-thirds, four-thirds, etc. of the number of item types or item numbers of the target order, which may be set according to circumstances.
After the target stock container is determined, the movable carrier on which the target stock container is located is determined as the target movable carrier. In a preferred embodiment, the server is further configured to determine the target mobile carrier that is carrying the largest number of target inventory containers as first handled if it is determined that there are a plurality of target mobile carriers. In short, such a handling method can be used to transport as many target stock containers as possible to a workstation for picking operation with as few handling times as possible, so as to satisfy more target orders as soon as possible, which is beneficial to improving picking efficiency and timeliness of completing target orders.
In a preferred embodiment, the server is further configured to: the transfer route is determined such that mileage or time for transferring the target movable carrier to the workstation by the transfer apparatus is minimized. The handling device may preferably be configured as a handling robot and be adapted to the shape of the movable carrier, for example to be handled in a lifting, pulling or the like manner from the bottom, side or the like of the movable carrier. Information on the number, location, idle status, etc. of the handling device is preferably stored in the server in order to calculate the shortest mileage or shortest time route of a certain target movable carrier by the handling device.
In particular, in a preferred embodiment, the warehouse management system includes a plurality of available handling devices. In this case, if how to carry is considered only at the level of each carrying device alone, not at the level of a plurality of carrying devices, a plurality of carrying devices may collide, such as due to a route crossing, or the like. Thus, in a preferred embodiment according to the invention, the plurality of available handling devices preferably have different priorities, and the priorities of the handling devices are determined according to at least one of their distance to the target movable carrier, the distance to the workstation. In one embodiment, the priority of the handling device may be determined from the sum of its distance to the target movable carrier and its distance to the workstation. In this way, the handling device that is relatively close to the target movable carrier and the work station as a whole can be preferentially selected to handle the target movable carrier that needs to be handled, so that the target movable carrier is handled to the work station in a time as short as possible, and thus the picking operation can be completed quickly. In addition, the priority of the handling device may be determined according to the power of the handling device itself, the time of use, the degree of congestion of the handling device traveling on the road, and the like.
In a preferred embodiment, the server is further configured to change the priority of the plurality of available handling devices or the handling route of the handling device in dependence of the queuing information relating to the target movable carrier currently being queued in the queuing area. For example, in the case where there is a target movable carrier in the queuing area to which the workstation corresponds, if the distances from the target movable carrier to each of the two handling apparatuses are the same as the sum of the distances from the workstation, only one handling apparatus is closer to the workstation, farther from the target movable carrier, and the other handling apparatus is farther from the workstation, closer to the target movable carrier, then the priority of the handling apparatus farther from the workstation, closer to the target movable carrier, is higher than the priority of the handling apparatus closer to the workstation, farther from the target movable carrier. Alternatively, because there is a target movable carrier queuing in the queuing area to which the workstation corresponds, the priority of the handling device determined to handle the target movable carrier to the workstation may be adjusted down among the plurality of handling devices, and the handling route thereof may be changed to pass other handling devices having higher priorities first when the route crosses. In this way, when two carrying devices move in opposite directions, the server can configure the route of the carrying devices to be changed or avoided by the carrying device with low priority; when two transporting apparatuses travel to the same intersection or intersection, the server may configure its route so that they are not simultaneously in the same row, but the transporting apparatus having a low priority is permitted to be in the row for the transporting apparatus having a high priority.
In a preferred embodiment, the server is further configured to change the priority of the plurality of available handling devices or the handling route of the handling device in accordance with the task volume information related to the target order. Preferably, if the target order has a relatively small amount of tasks, the inventory receptacles in the movable carriers of the corresponding workstation may complete the picking operation quickly or have completed the picking operation, the priority of the handling device corresponding to the workstation is adjusted up among the plurality of handling devices. This gives the handling device a higher priority when travelling on the road, ensuring that it will pick up the destination mobile carrier earlier to the workstation. While several ways in which the server calculates how the handling equipment is handled are described above, it will be appreciated that the server of the warehouse management system of the present invention is not limited to calculating how the handling equipment is handled in the above manner.
With the above components or configurations, the warehouse management system according to the present invention is capable of establishing a many-to-many distributed network of inventory containers corresponding to a target order of an order container, and planning and scheduling a full flow operation of goods from inventory container to order container with respect to an optimization target of inventory container loading and unloading number, storage face operation number, movable carrier handling number, etc., thereby ensuring that the associated inventory containers and order containers are transported to the same workstation as much as possible and in association for picking operation, ensuring timeliness of completing the target order, avoiding a lot of manpower required by a conventional operation mode, and improving circulation efficiency of goods.
For convenience of description, the above devices are described as being functionally divided into various units, respectively. Of course, the functions of each element may be implemented in one or more software and/or hardware elements when implemented in the present application.
It should be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article or apparatus that comprises the element.
It will be appreciated by those skilled in the art that embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The application may be described in the general context of computer-executable instructions, such as program modules, being executed by a computer. Generally, program modules include routines, programs, objects, components, data structures, etc. that perform particular tasks or implement particular abstract data types. The application may also be practiced in distributed computing environments where tasks are performed by remote processing devices that are linked through a communications network. In a distributed computing environment, program modules may be located in both local and remote computer storage media including memory storage devices.
Unless defined otherwise, technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular implementations only and is not intended to be limiting of the invention. Terms such as "disposed" or the like as used herein may refer to either one element being directly attached to another element or one element being attached to another element through an intermediate member. Features described herein in one embodiment may be applied to another embodiment alone or in combination with other features unless the features are not applicable or otherwise indicated in the other embodiment.
The present invention has been described in terms of the above embodiments, but it should be understood that the above embodiments are for purposes of illustration and description only and are not intended to limit the invention to the embodiments described. Those skilled in the art will appreciate that many variations and modifications are possible in light of the teachings of the invention, which variations and modifications are within the scope of the invention as claimed.

Claims (19)

1. A warehouse management system, comprising:
an order container having a space for accommodating goods;
an inventory container in which items of a target order are stored;
a movable carrier for carrying at least one of the order container and the inventory container;
a server for determining a target stock container and a target movable carrier where the target stock container is located according to at least one of the minimum loading and unloading quantity of the stock container and the minimum carrying quantity of the movable carrier, wherein,
the minimum loading and unloading quantity of the stock containers is the minimum quantity of the stock containers where all commodities meeting the target order are located;
the minimum carrying quantity of the movable carriers is the minimum quantity of the movable carriers where all commodities meeting the target order are located;
A workstation for docking the movable carrier;
a handling apparatus configured to move the order container and the target inventory container between the workstation and the movable carrier;
a handling device configured to move the movable carrier carrying the order containers and the target movable carrier carrying the target inventory containers to the same workstation such that at least one of the order containers and at least one of the target inventory containers perform a picking operation at the workstation.
2. The warehouse management system of claim 1, wherein,
the minimum loading and unloading quantity of the stock containers is the minimum quantity of the stock containers where all commodities meeting the single target order are located; or alternatively
The minimum loading and unloading quantity of the stock containers is the minimum quantity of the stock containers where all goods meeting all the target orders are located.
3. The warehouse management system of claim 1, wherein,
the minimum carrying quantity of the movable carriers is the minimum quantity of the movable carriers where all commodities meeting a single target order are located; or alternatively
The minimum carrying quantity of the movable carriers is the minimum quantity of the movable carriers where all commodities meeting all the target orders are located.
4. The warehouse management system of claim 1, wherein,
in the case where the server determines the target inventory container based on both the minimum inventory container handling quantity and the minimum movable carrier handling quantity,
the server is configured to determine that the inventory container corresponding to the inventory container minimum loading and unloading number is the target inventory container when the number of movable carriers in which the inventory container corresponding to the inventory container minimum loading and unloading number is equal to the movable carrier minimum transport number.
5. The warehouse management system of claim 4, wherein,
the server is further configured to compare the number of movable carriers in which the inventory container that satisfies the minimum number of all items of a single target order is located with the number of movable carriers in which the inventory container that satisfies the minimum number of all items of the target order is located, and determine the smaller one as the number of movable carriers in which the inventory container that corresponds to the inventory container minimum loading and unloading number is located.
6. The warehouse management system of claim 1, wherein,
in the case where the server determines the target inventory container based on both the minimum inventory container handling quantity and the minimum movable carrier handling quantity,
the server is configured to determine that the inventory container corresponding to the minimum handling number of the inventory containers is the target inventory container when the number of the movable carriers in which the inventory container corresponding to the minimum handling number of the inventory containers is located is greater than a predetermined coefficient multiple of the minimum handling number of the movable carriers.
7. The warehouse management system of claim 6, wherein,
the predetermined coefficient is 1.2.
8. The warehouse management system of claim 1, wherein the movable carrier is configured to have a plurality of storage surfaces, each of the storage surfaces housing a plurality of the inventory receptacles, and
the server is further configured to determine a target stock container and a target movable carrier in which the target stock container is located according to the minimum operation quantity of the stock surface, wherein
The minimum operation quantity of the storage surfaces is the minimum quantity of the storage surfaces where all commodities meeting the single target order are located; or alternatively
The minimum operation quantity of the storage surfaces is the minimum quantity of the storage surfaces where all commodities meeting all the target orders are located.
9. The warehouse management system of any one of claims 1 to 8, wherein the target order includes a plurality of SKUs, each SKU having a commodity category and a commodity quantity;
the server is further configured to determine a targeted inventory container that is hit based on a degree of matching of the items stored in the inventory container with the targeted order in terms of item type and item quantity.
10. The warehouse management system of claim 9, wherein the server is further configured to:
and if the commodity type and the commodity number of the commodities stored in the target stock container are the same as those of the target order, replacing the target stock container with the order container associated with the target order.
11. The warehouse management system of claim 9, wherein the server is further configured to:
if the number of the commodity kind or the commodity number of the commodity stored in the target stock container is equal to or less than the number of the commodity kind or the commodity number of the target order and is greater than half of the number of the commodity kind or the commodity number of the target order, the target stock container is replaced with an order container associated with the target order.
12. The warehouse management system of any of claims 1-11, wherein the server is further configured to:
if it is determined that there are a plurality of target movable carriers, the target movable carrier with the largest number of target stock containers carried is determined to be handled first.
13. The warehouse management system of claim 1, wherein the server is further configured to: determining a carrying route so that mileage or time for carrying the target movable carrier to the workstation by the carrying apparatus is minimized.
14. The warehouse management system of claim 1, comprising a plurality of the available handling devices, the plurality of available handling devices having different priorities, the priorities of the handling devices determined based on at least one of a distance to a target movable carrier, a distance to a workstation.
15. The warehouse management system of claim 13, further comprising a queuing area corresponding to the workstation, the queuing area capable of housing at least one of the mobile carriers;
the server is further configured to change a priority of the plurality of available handling devices or a handling route of the handling device based on queuing information regarding a target movable carrier currently being queued in the queuing area.
16. The warehouse management system of claim 13, wherein the server is further configured to change a priority of a plurality of available handling devices or a handling route of the handling devices based on the task volume information related to the target order.
17. The warehouse management system of claim 9, comprising j of the movable carriers, b for the ith SKU of the ith order of interest o,i Defined as the number of ith said SKU in the ith said target order, willA hit of the first storage location of the kth storage surface defined as the jth said movable carrier on the jth said target order will +.>The number of i of said SKUs defined as the ith storage surface of the jth said movable carrier hitting the ith said order of the jth said target in the ith storage location will +.>Defining the number of ith SKUs in the ith storage location of the kth storage surface of the jth movable carrier, the warehouse management system configured to cause:
wherein the warehouse management system is configured to calculate:
18. the warehouse management system of claim 17, wherein the warehouse management system is further configured to calculate:
19. The warehouse management system of claim 17, wherein the warehouse management system is further configured to calculate:
CN202211024130.XA 2022-08-24 2022-08-24 Warehouse management system Pending CN117657644A (en)

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