CN111985860A - Task processing method and device - Google Patents
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Abstract
The invention discloses a task processing method and a task processing device, and relates to the technical field of logistics storage. One embodiment of the method comprises: constructing the operation tasks belonging to the same channel and the same layer as an operation task set according to the position of goods on a shelf, which is specified by the operation tasks to be executed; under the condition that the transportation equipment exists on the current layer corresponding to the job task set, obtaining the value of an influence factor corresponding to at least one job task in the job task set to determine the execution sequence of the at least one job task; and issuing at least one job task to the transportation equipment, so that the transportation equipment executes the job tasks according to the execution sequence. According to the method, after the operation tasks belonging to the same layer are collected, the execution sequence of each operation task in the operation task set is determined, the transportation equipment executes the operation tasks according to the execution sequence, and the transportation equipment does not need to perform layer changing operation during the task execution period, so that the layer changing times of the transportation equipment are reduced, and the operation efficiency is improved.
Description
Technical Field
The invention relates to the field of logistics storage, in particular to a task processing method and device.
Background
In an automatic warehouse based on a layer-changing shuttle system, after receiving an operation task, a server determines the position of a goods shelf where goods specified by the operation task are located, and subsequently issues the operation task to a shuttle vehicle on a corresponding layer according to the position; the shuttle car executes the operation task according to the sequence of the task issuing time. If a layer without a shuttle receives a job task, the shuttle closest to the layer and without the job task to be performed is typically swapped to the layer.
In the process of implementing the invention, the inventor finds that at least the following problems exist in the prior art:
(1) the shuttle car is according to the order of task issue time, when carrying out the operation task, the operation task of same layer probably is not adjacent, and the shuttle car need trade the layer and deposit and withdraw goods, can increase the number of times that the shuttle car traded the layer like this, because the time of trading the layer is longer, the operating efficiency will reduce.
(2) If the layer where the shuttle car selected for layer changing is located currently receives the new job task, the shuttle cars of other layers are required to be called to execute the new job task after the layer of the shuttle car is changed, so that the layer changing times of the shuttle car are increased, and further the operation efficiency is reduced.
(3) The shuttle car executes the operation tasks according to the sequence of the task issuing time, ignores the importance of the operation tasks, such as emergency warehousing tasks, and can cause the problem of main line backlog and the like if the emergency warehousing tasks cannot be processed preferentially.
Disclosure of Invention
In view of this, embodiments of the present invention provide a task processing method and apparatus, which collect job tasks belonging to the same layer, and then obtain values of impact factors corresponding to the collected job task sets, so as to determine an execution order of each job task in the job task set. The transportation equipment executes the operation tasks according to the execution sequence, and the transportation equipment does not need to carry out layer changing operation during the task execution, so that the layer changing times of the transportation equipment are reduced, and the operation efficiency is improved.
To achieve the above object, according to an aspect of an embodiment of the present invention, a task processing method is provided.
The task processing method of the embodiment of the invention comprises the following steps: constructing the operation tasks belonging to the same channel and the same layer as an operation task set according to the position of goods on a shelf, which is specified by the operation tasks to be executed; under the condition that the transportation equipment exists on the current layer corresponding to the job task set, obtaining the value of an influence factor corresponding to at least one job task in the job task set so as to determine the execution sequence of the at least one job task; and issuing the at least one job task to the transportation equipment, so that the transportation equipment executes the job tasks according to the execution sequence.
Optionally, the influence factor comprises any one or more of: whether the goods are blocked, the number of picking buffer positions corresponding to the operation tasks, the priority of the operation tasks and the distance between the goods position and a passage port; the determining an execution order of the at least one job task comprises: and determining the execution sequence of the at least one job task according to the sequence that the goods are not blocked, the number of the picking buffer positions is from large to small, the priority of the job tasks is from high to low, and the distance between the goods position and the passage port is from far to near.
Optionally, the transportation device executes the job tasks according to the execution sequence, including: the transportation equipment executes the operation tasks according to a preset warehouse entry and exit rule and the execution sequence; the warehouse entry and exit rule is that one is brought out and one is brought in or one is brought in and one is brought out.
Optionally, the method further comprises: under the condition that the layer where the current transportation equipment is located does not have the operation tasks to be executed, selecting a target layer from other layers where the operation tasks to be executed but the transportation equipment does not exist according to a preset layer changing rule; and issuing the target layer to the current transportation equipment through a first layer changing instruction so as to change the layer of the current transportation equipment to the target layer.
Optionally, the layer change rule includes any one or more of the following: the other layers have emergency operation tasks, the number of the tasks with the operation task backlog time exceeding a preset first threshold value is changed from more to less, and the number of the operation tasks backlog is changed from more to less; according to a preset layer changing rule, selecting a target layer from other layers which have the task to be executed but do not have the transportation equipment, wherein the method comprises the following steps: and selecting a target layer from other layers which have the to-be-executed job task but do not have the transportation equipment according to the sequence that the emergency job task exists, the number of the tasks with the job task backlog time exceeding the first threshold value is from large to small, and the number of the job task backlogs is from large to small.
Optionally, the method further comprises: under the condition that no transportation equipment exists on the current layer of the goods specified by the operation task, acquiring idle transportation equipment on other layers of the shelf; if the number of the idle transportation equipment is equal to 1, issuing the current layer to the idle transportation equipment through a second layer changing instruction so that the idle transportation equipment is changed to the current layer; if the number of the idle transportation equipment is larger than 1, calculating the probability of the issued operation tasks on the layer where the idle transportation equipment is located, and selecting target transportation equipment from the idle transportation equipment according to the probability; and issuing the current layer to the target transportation equipment through a third layer changing instruction so as to enable the target transportation equipment to change the layer to the current layer.
Optionally, the calculating the probability of the task issued by the layer where the idle transportation device is located includes: calculating the operation probability of at least one type of stock equipment in the layer where the idle transportation equipment is located, and the ratio of the quantity of each type of stock equipment to the quantity of all stock equipment; and taking the ratio of the quantity of each type of inventory equipment to the quantity of all inventory equipment as a weight, and carrying out weighted summation on the operation probability of each type of inventory equipment to obtain the probability of the issued operation task of the layer where the idle transportation equipment is located.
Optionally, the method further comprises: under the condition that the current layer of the shelf has the emergency operation task, selecting the transportation equipment corresponding to the layer with the least operation task to be executed from other layers with the transportation equipment, and taking the selected transportation equipment as target transportation equipment; and issuing the current layer of the shelf to the target transportation equipment through a fourth layer changing instruction so that the target transportation equipment is changed to the current layer of the shelf.
To achieve the above object, according to another aspect of the embodiments of the present invention, there is provided a task processing device.
A task processing device of an embodiment of the present invention includes: the construction module is used for constructing the operation tasks belonging to the same channel and the same layer into an operation task set according to the position of the goods on the goods shelf, which is specified by the operation tasks to be executed; the determining module is used for acquiring the value of an influence factor corresponding to at least one job task in the job task set under the condition that the transportation equipment exists on the current layer corresponding to the job task set so as to determine the execution sequence of the at least one job task; and the issuing module is used for issuing the at least one job task to the transportation equipment so that the transportation equipment executes the job tasks according to the execution sequence.
Optionally, the influence factor comprises any one or more of: whether the goods are blocked, the number of picking buffer positions corresponding to the operation tasks, the priority of the operation tasks and the distance between the goods position and a passage port; the determining module is further configured to: and determining the execution sequence of the at least one job task according to the sequence that the goods are not blocked, the number of the picking buffer positions is from large to small, the priority of the job tasks is from high to low, and the distance between the goods position and the passage port is from far to near.
Optionally, the apparatus further comprises: the first layer changing module is used for selecting a target layer from other layers which have the operation tasks to be executed but do not have the transportation equipment according to a preset layer changing rule under the condition that the layer where the current transportation equipment is located does not have the operation tasks to be executed; and issuing the target layer to the current transportation equipment through a first layer changing instruction so as to change the layer of the current transportation equipment to the target layer.
Optionally, the apparatus further comprises: the second layer changing module is used for acquiring idle transportation equipment on other layers of the shelf under the condition that the transportation equipment does not exist on the current layer of the goods specified by the operation task; if the number of the idle transportation equipment is equal to 1, issuing the current layer to the idle transportation equipment through a second layer changing instruction so that the idle transportation equipment is changed to the current layer; if the number of the idle transportation equipment is larger than 1, calculating the probability of the issued operation tasks on the layer where the idle transportation equipment is located, and selecting target transportation equipment from the idle transportation equipment according to the probability; and issuing the current layer to the target transportation equipment through a third layer changing instruction so that the target transportation equipment is changed to the current layer.
Optionally, the apparatus further comprises: the third layer changing module is used for selecting the transportation equipment corresponding to the layer with the minimum operation task to be executed from other layers with the transportation equipment under the condition that the emergency operation task exists on the current layer of the shelf, and taking the selected transportation equipment as target transportation equipment; and issuing the current layer of the shelf to the target transportation equipment through a fourth layer changing instruction so that the target transportation equipment is changed to the current layer of the shelf.
To achieve the above object, according to still another aspect of embodiments of the present invention, there is provided an electronic apparatus.
An electronic device of an embodiment of the present invention includes: one or more processors; a storage device, configured to store one or more programs, which when executed by the one or more processors, cause the one or more processors to implement a task processing method according to an embodiment of the present invention.
To achieve the above object, according to still another aspect of embodiments of the present invention, there is provided a computer-readable medium.
A computer-readable medium of an embodiment of the present invention has stored thereon a computer program that, when executed by a processor, implements a task processing method of an embodiment of the present invention.
One embodiment of the above invention has the following advantages or benefits: after the operation tasks belonging to the same channel and the same layer are summarized, the value of the influence factor corresponding to the operation task set obtained by summarizing is obtained to determine the execution sequence of each operation task in the operation task set, the transportation equipment executes the operation tasks according to the execution sequence, and the transportation equipment does not need to carry out layer changing operation during the task execution period, so that the layer changing times of the transportation equipment are reduced, and the operation efficiency is improved; determining the influence factors and the priority levels of the influence factors, and sequencing the operation tasks, thereby further ensuring the operation efficiency; the operation task is executed on the principle of one-in-one-out or one-in-one-out, so that the operation efficiency is further improved; when some transport equipment does not have executable operation tasks on the current layer, the target layer is selected from other layers to change the layers, the operation tasks on the same layer can be executed and then the layers are changed, so that the layer changing times of the transport equipment are reduced, the utilization rate of the transport equipment is improved, and the operation efficiency is improved; when a plurality of transport devices are idle, according to the probability that the layer where each idle transport device is located continues to issue the operation task, selecting the idle transport device with the lowest probability from the idle transport devices to change the layer, and avoiding the need of calling the transport devices from other layers to execute a subsequently received new operation task after a certain transport device is changed; if the emergency operation task exists, the transportation equipment with the least operation tasks to be executed is forced to be changed to the layer with the emergency operation task, and the overstocked main lines are avoided.
Further effects of the above-mentioned non-conventional alternatives will be described below in connection with the embodiments.
Drawings
The drawings are included to provide a better understanding of the invention and are not to be construed as unduly limiting the invention. Wherein:
FIG. 1 is a schematic diagram of the main steps of a task processing method according to an embodiment of the invention;
FIG. 2 is a top view of a multi-lane automated warehouse based on a layer-changing shuttle system according to an embodiment of the present invention;
FIG. 3(a) is a schematic diagram illustrating a first implementation of a processing procedure of a task processing method according to an embodiment of the present invention;
FIG. 3(b) is a schematic diagram illustrating an implementation principle of a second processing procedure of the task processing method according to the embodiment of the present invention;
FIG. 3(c) is a schematic diagram illustrating a third implementation principle of a processing procedure of the task processing method according to the embodiment of the present invention;
FIG. 3(d) is a schematic diagram illustrating an implementation principle of a fourth processing procedure of the task processing method according to the embodiment of the present invention;
FIG. 4 is a primary flowchart of a first process of a task processing method according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of the main modules of a task processing device according to an embodiment of the present invention;
FIG. 6 is an exemplary system architecture diagram in which embodiments of the present invention may be employed;
FIG. 7 is a schematic diagram of a computer apparatus suitable for use in an electronic device to implement an embodiment of the invention.
Detailed Description
Exemplary embodiments of the present invention are described below with reference to the accompanying drawings, in which various details of embodiments of the invention are included to assist understanding, and which are to be considered as merely exemplary. Accordingly, those of ordinary skill in the art will recognize that various changes and modifications of the embodiments described herein can be made without departing from the scope and spirit of the invention. Also, descriptions of well-known functions and constructions are omitted in the following description for clarity and conciseness.
Fig. 1 is a schematic diagram of main steps of a task processing method according to an embodiment of the present invention. As shown in fig. 1, the task processing method according to the embodiment of the present invention mainly includes the following steps:
step S101: and constructing the operation tasks belonging to the same channel and the same layer as an operation task set according to the position of the goods on the shelf, which is specified by the operation tasks to be executed. After receiving the job task, the central server determines the position of the shelf where the goods specified by the job task are located, namely the position of the shelf where the bin storing the goods is located, wherein the position comprises a channel, the number of layers and the number of columns. And then summarizing the operation tasks positioned on the same channel and the same layer of the goods shelf, and constructing the operation tasks on the same channel and the same layer into a corresponding operation task set. And the job task is a warehousing task and/or a ex-warehousing task. In the embodiment, the channel where the bin is located is the roadway of the shelf where the bin is located.
Step S102: and under the condition that the transportation equipment exists on the current layer corresponding to the job task set, acquiring the value of an influence factor corresponding to at least one job task in the job task set so as to determine the execution sequence of the at least one job task. If the transportation equipment exists on the current layer corresponding to a certain job task set, the execution sequence of each task job in the job task set can be determined. According to the actual operation requirement, influence factors influencing the operation efficiency and the priority sequence of each influence factor are determined in advance. The flow logic of the warehousing service and the ex-warehouse service is similar, taking the ex-warehouse service as an example, the influence factor may be one or more of the following items: whether goods to be delivered out of the warehouse are blocked or not, the number of picking buffer positions corresponding to the delivery tasks, the priority of the delivery tasks and the distance between the position of the goods to be delivered out of the warehouse and a passage port. Correspondingly, the central server can determine the execution sequence of each operation task according to the sequence that the goods to be delivered are not blocked, the number of the picking buffer positions is from large to small, the priority of the delivery tasks is from high to low, and the distance between the position of the goods to be delivered and the passage port is from far to near.
Step S103: and issuing the at least one job task to the transportation equipment, so that the transportation equipment executes the job tasks according to the execution sequence. Transport equipment is used to perform work tasks such as shuttles, stackers, Automated Guided Vehicles (AGVs), and the like. And the central server sends the operation tasks to the transportation equipment one by one according to the determined execution sequence. Still taking the ex-warehouse task as an example, the transportation equipment takes the goods out according to the positions of the goods and places the goods on the in-warehouse and out-warehouse buffer positions, feeds back task completion information to the central server, and then waits for executing the next ex-warehouse task. Through the process, the layer changing operation is not needed during the process that the transportation equipment executes the operation tasks of the same channel and the same layer, the layer changing times of the transportation equipment are reduced, and the operation efficiency is improved.
Fig. 2 is a top view of the multi-lane automatic warehouse based on the layer-changing shuttle system according to the embodiment of the invention. As shown in fig. 2, the multi-lane automatic warehouse according to the embodiment of the present invention includes: shelves 201, shuttle 202, in-out buffer bay 203, in-out elevator 204, picking station 205, and change-floor elevator 206. The shelf 201 is a double-depth shelf, and a bin is stored on the storage position of the shelf 201. When the goods shelf is used for storing goods, the goods shelf is stored firstly and then is arranged in front; when the goods are taken, the front row is taken first and then the rear row is taken, namely if the rear row is taken and the front row is blocked by a material box, the front row material box needs to be taken first. The types of the bins are various, for example, the bins can be divided into 1/1 bin (capable of storing one kind of goods), 1/2 bin (capable of storing two kinds of goods, with one partition in the middle of the bin), and 1/4 bin (capable of storing four kinds of goods, with three partitions in the middle of the bin), etc.
The shuttle 202 can move horizontally on one floor, can take out a bin to be delivered to the corresponding in-out buffer position 203 of the floor at the storage position, and can also take out a bin to be delivered to the storage position of the floor from the in-out buffer position 203. In general, based on cost consideration or actual requirements, each lane is not provided with shuttle cars on each layer, that is, the number of shuttle cars in one lane is less than the number of layers of the goods shelf, so that the condition that the shuttle cars change layers to take goods exists.
The warehouse-in/out elevator 204 can take out the material box from the warehouse-in/out buffer position 203 according to certain logic and convey the material box to a layer of conveying line, and the material box is conveyed to the picking workbench 205 through the conveying line; bins on the conveyor line may also be transported to the in-out buffer station 203.
The picking station 205 may be operated by a human or a picking robot to pick and sort goods.
And the layer changing elevator 206 is used for changing the layers of the shuttle 202. The black box corresponding to 206 in fig. 2 is only used to illustrate the position of the floor hoist and its specific structure is not shown.
Fig. 3(a) -3 (d) are schematic diagrams illustrating the implementation principle of the task processing method according to the embodiment of the present invention. As shown in fig. 3(a) -3 (d), the task processing method of the embodiment of the present invention includes four parallel processes for determining when to invoke a shuttle swap layer, which shuttle swap layer to invoke, and which layer to swap to. The four treatment processes are respectively as follows: firstly, a task processing process of a same-lane and same-layer job task (see fig. 3 (a)); secondly, when the layer of the shuttle vehicle has no executable job task, the shuttle vehicle is changed to the layer (see fig. 3 (b)); thirdly, when a plurality of shuttles are idle, selecting which shuttle to change the layer (see fig. 3 (c)); and fourthly, when an emergency operation task exists, selecting the shuttle vehicle to change the layer (see (d) in fig. 3). The following describes the above four processes.
Fig. 4 is a main flow diagram of a first processing procedure of a task processing method according to an embodiment of the present invention. As shown in fig. 4, a first processing procedure of the task processing method according to the embodiment of the present invention, taking a job task as an ex-warehouse task as an example, mainly includes the following steps:
step S401: and constructing the operation tasks belonging to the same roadway and the same layer as an initial ex-warehouse task set according to the position of the goods on the goods shelf, which is specified by the ex-warehouse task to be executed. And constructing the operation tasks belonging to the same roadway and the same layer as an initial ex-warehouse task set. The goods to be taken out are designated in the warehouse-out task, and the position of the goods in the warehouse is determined. For example, the number of lanes in the multi-lane automatic warehouse is M, and the number of layers of shelves in each lane is N. Summarizing all ex-warehouse tasks of the ith roadway (i is more than or equal to 1 and less than or equal to M) and the jth layer (j is more than or equal to 1 and less than or equal to N) of the goods shelf, adding the summarized ex-warehouse tasks into an initial ex-warehouse task set, and expressing the summarized ex-warehouse tasks by the following formula:
in the formula, Qi,jAn initial ex-warehouse task set corresponding to the ith roadway and the jth layer;
the nth warehouse-out task is the ith roadway and the jth layer; n is the number of ex-warehouse tasks of the ith roadway and the jth layer.
Step S402: and filtering the initial outbound task set according to whether the picking workbench corresponding to each outbound task in the initial outbound task set has an idle picking cache position, and storing the outbound tasks with the idle picking cache position in the middle outbound task set. Different ex-warehouse tasks may be selected through different picking work tables, if the picking work table corresponding to a certain ex-warehouse task does not have an idle picking buffer position, the ex-warehouse task is filtered, the ex-warehouse task with the idle picking buffer position is reserved, and goods are prevented from being accumulated on a main line.
Step S403: and acquiring the values of the influence factors corresponding to the outbound tasks in the intermediate outbound task set, and then determining the execution sequence of the outbound tasks according to the preset priority sequence of the influence factors. If the layer corresponding to a certain intermediate ex-warehouse task set is provided with a shuttle and comprises a plurality of ex-warehouse tasks, the execution sequence of each ex-warehouse task can be determined according to the step. If the layer corresponding to the intermediate ex-warehouse task set is provided with the shuttle cars and only comprises 1 ex-warehouse task, the ex-warehouse task can be directly sent to the shuttle cars corresponding to the layer. If the layer corresponding to the intermediate ex-warehouse task set does not have the shuttle car, the step is executed after the shuttle car is called from other layers.
In an embodiment, the impact factors include: whether goods to be delivered out of the warehouse are blocked, the number of picking buffer positions, the priority of delivery tasks and the distance between the position of the goods to be delivered out of the warehouse and a road junction. The central server stores the occupation state of each storage position, and whether goods to be delivered out of the warehouse are blocked or not can be obtained through the occupation state. The priority of each outbound task is defined in the task. The priority of each influence factor is not fixed, and in the embodiment, each delivery task in the middle delivery task set can be sorted according to the sequence that the goods to be delivered are not blocked, the number of the sorting buffer bits is from large to small, the priority of the delivery tasks is from high to low, and the distance between the position of the goods to be delivered and the road junction is from far to near.
Step S404: and issuing the sorted ex-warehouse tasks to the shuttle cars one by one, and sequentially executing each ex-warehouse task by the shuttle cars according to the sequence. In the embodiment, the central server issues the first ex-warehouse task obtained after sequencing to the shuttle vehicles on the layer; after the shuttle car executes the ex-warehouse task, feeding task completion information back to the central server; and after receiving the feedback information, the central server sends a second ex-warehouse task to the shuttle vehicle, and sequentially processes each ex-warehouse task according to the mode until all ex-warehouse tasks of the intermediate ex-warehouse task set are completely executed.
If the operation tasks include both the warehouse-out task and the warehouse-in task, in a preferred embodiment, the shuttle can execute the operation tasks on the principle of taking in and taking out one by one or taking in and taking out one by one, so as to improve the operation efficiency. One is taken out and one is put in, namely the shuttle vehicle transports the material box to be taken out of the warehouse to the in-out warehouse buffer position of the corresponding layer, and then transports the material box to be put in the warehouse on the in-out warehouse buffer position to the storage position of the corresponding layer of the warehouse; the same applies to one in and one out.
Under the condition that the in-out storage buffer position is full, if a bin to be stored exists in the in-out storage buffer position, a storage task is executed firstly, and then an out-of-storage task is executed; if all the in-out buffer positions are the material boxes for out-storage, waiting for the in-out elevator to move one material box away, and executing the out-storage task after the in-out buffer positions are vacated.
The second processing procedure of the task processing method according to the embodiment of the present invention is specifically described as follows:
and if the layer where a certain shuttle vehicle is located does not have the operation tasks to be executed, selecting a layer for changing the layer for the shuttle vehicle from other layers where the operation tasks to be executed exist but the shuttle vehicle does not exist according to the following layer changing rule. Therefore, the layer can be changed after the shuttle vehicle finishes the execution of the executable operation tasks on the same layer as much as possible, and the layer changing times are reduced. The fact that no job task is to be executed may mean that the shuttle car does not receive a job task within a preset time period, or that the picking workstation does not have a free picking buffer. The layer-changing rule is provided with factors to be considered for layer changing and the priority order of the factors.
The factors to be considered for layer changing may be, for example: whether the layer is the layer of the emergency operation task, the number of tasks with the operation task backlog time exceeding a first threshold value, and the number of operation tasks. The emergency operation task comprises an emergency warehousing task, which is a task that can only wait on a transmission line because no shuttle vehicle is arranged on a target layer of a bin to be warehoused and an in-out buffer position is full. In the embodiment, the picking work table corresponding to the job task has a free picking buffer position, but the unexecuted job task is taken as the backlogged job task. The priority order of each factor is not fixed, and in the embodiment, the layer change operation is specifically as follows:
(1) under the condition that the current layer where the shuttle car is located does not have the operation tasks to be executed, selecting a target layer from other layers where the operation tasks to be executed but the shuttle car does not exist according to the sequence that the emergency operation tasks exist, the number of the tasks with the operation task backlog time exceeding a first threshold value is from large to small, and the number of the operation task backlogs is from large to small;
(2) and issuing the target layer to the current shuttle vehicle through a first layer changing instruction so as to change the layer of the current shuttle vehicle to the target layer.
The third processing procedure of the task processing method according to the embodiment of the present invention is specifically described as follows:
If a certain current layer without the shuttle cars receives the operation tasks, the shuttle cars are selected from other layers with idle shuttle cars to be changed to the current layer, so that the utilization rate of the shuttle cars is improved, and the operation efficiency is improved. The concrete implementation is as follows:
(1) and if the number of the idle shuttle cars is 1, sending the current layer to the idle shuttle cars through a second layer changing instruction so that the idle shuttle cars change the layer to the current layer.
(2) If the number of the idle shuttle vehicles is more than 1, calculating the probability of the issued operation tasks of the layer where the idle shuttle vehicles are located, and selecting a target shuttle vehicle from the idle shuttle vehicles according to the probability; and then the current layer is issued to the target shuttle vehicle through a third layer changing instruction so that the target shuttle vehicle changes the layer to the current layer.
In the embodiment, the idle shuttle car corresponding to the layer with the lowest probability of the issued job task is taken as the target shuttle car. The probability of the task issued by the layer where each idle shuttle vehicle is located can be calculated by the following formula:
in the formula, Pi,jThe probability of the assigned job task at the jth layer is the ith roadway; k is the ithRoadway, number of bin types at jth layer; p is a radical ofvThe operation probability of the v-th bin is obtained; 
The number of the ith laneway, the jth layer and the v type material box is the ratio of the number of the material boxes of all types. In the embodiment, the ratio of the number of the various types of bins in the period of time can be used as the operation probability of the bin of the type. Wherein the bin is one of stock keeping devices for storing goods.
The fourth processing procedure of the task processing method according to the embodiment of the present invention is specifically described as follows:
if the emergency operation task exists on the current layer of the shelf, selecting a shuttle car corresponding to the layer with the least operation task to be executed from other layers with the shuttle cars, and taking the selected shuttle car as a target shuttle car; and then the current layer is issued to the target shuttle vehicle through a fourth layer changing instruction so as to forcibly change the layer of the target shuttle vehicle to the current layer of the goods shelf.
The emergency operation tasks comprise an emergency warehousing task and an emergency ex-warehousing task. The emergency ex-warehouse task means that the waiting time of the ex-warehouse task exceeds a preset threshold. In the embodiment, the forced layer-changing operation can be triggered when the number of warehousing tasks of the roadway crossing backlog exceeds a preset threshold. By the mode, the emergency operation task can be preferentially executed, when the target layer corresponding to the emergency operation task does not have an idle storage position, the storage position of the target layer can be cleared as soon as possible, a material box corresponding to the emergency operation task is prevented from waiting at a road junction, and further, the main line is prevented from being overstocked.
In a preferred embodiment, the target shuttle can perform the layer change after the remaining job tasks of the current layer are executed. I.e., the target shuttle is no longer performing the subsequently received active tasks, the central server may continue to locate the job tasks for that level, but at the time of location, consider that level to be free of shuttles. Or the remaining operation tasks of the current layer can not be executed, and the layer can be directly and forcibly changed.
According to the task processing method, after the operation tasks belonging to the same channel and the same layer are collected, the value of the influence factor corresponding to the collected operation task set is obtained to determine the execution sequence of each operation task in the operation task set, the transportation equipment executes the operation tasks according to the execution sequence, and the transportation equipment does not need layer changing operation during task execution, so that the layer changing frequency of the transportation equipment is reduced, and the operation efficiency is improved.
Fig. 5 is a schematic diagram of main blocks of a task processing device according to an embodiment of the present invention. As shown in fig. 5, a task processing device (i.e., a central server) 500 according to an embodiment of the present invention mainly includes:
the building module 501 is configured to build, as a job task set, job tasks belonging to the same channel and the same layer according to the position of the goods on the shelf, which is specified by the job task to be executed. After receiving the operation task, the module determines the position of a shelf where the goods specified by the operation task are located, namely the position of a shelf where a bin storing the goods is located, wherein the position comprises a channel, the number of layers and the number of columns. And then summarizing the operation tasks positioned on the same channel and the same layer of the goods shelf, and constructing the operation tasks on the same channel and the same layer into a corresponding operation task set. And the job task is a warehousing task and/or a ex-warehousing task. In the embodiment, the channel where the bin is located is the roadway of the shelf where the bin is located.
A determining module 502, configured to obtain a value of an impact factor corresponding to at least one job task in the job task set when the transportation device exists on a current layer corresponding to the job task set, so as to determine an execution order of the at least one job task. If the transportation equipment exists on the current layer corresponding to a certain job task set, the execution sequence of each task job in the job task set can be determined. According to the actual operation requirement, influence factors influencing the operation efficiency and the priority sequence of each influence factor are determined in advance. The flow logic of the warehousing service and the ex-warehouse service is similar, taking the ex-warehouse service as an example, the influence factor may be one or more of the following items: whether goods to be delivered out of the warehouse are blocked or not, the number of picking buffer positions corresponding to the delivery tasks, the priority of the delivery tasks and the distance between the position of the goods to be delivered out of the warehouse and a passage port. Correspondingly, the execution sequence of each operation task can be determined according to the sequence that the goods to be delivered are not blocked, the number of the picking buffer positions is reduced from high to low, the priority of the delivery tasks is reduced from high to low, and the distance between the position of the goods to be delivered and the passage port is reduced from far to near.
The issuing module 503 is configured to issue the at least one job task to the transportation device, so that the transportation device executes the job tasks according to the execution sequence. Transport equipment is used to perform work tasks such as shuttles, stackers, automated guided vehicles, and the like. The module sends the job tasks to the transportation equipment one by one according to the determined execution sequence. Still taking the ex-warehouse task as an example, the transportation equipment takes the goods out according to the positions of the goods and places the goods on the in-warehouse and out-warehouse buffer positions, feeds back task completion information to the task processing device, and then waits for executing the next ex-warehouse task. Through the process, the layer changing operation is not needed during the process that the transportation equipment executes the operation tasks of the same channel and the same layer, the layer changing times of the transportation equipment are reduced, and the operation efficiency is improved.
In addition, the task processing device 500 according to the embodiment of the present invention may further include: first to third layer changing modules (not shown in fig. 5). The first layer changing module is used for selecting a target layer from other layers which have the to-be-executed operation task but do not have the transportation equipment according to a preset layer changing rule under the condition that the layer where the current transportation equipment is located does not have the to-be-executed operation task; and issuing the target layer to the current transportation equipment through the first layer changing instruction so as to change the layer of the current transportation equipment to the target layer.
The second layer changing module is used for acquiring idle transportation equipment on other layers of the goods shelf under the condition that the transportation equipment does not exist on the current layer of the goods specified by the operation task; if the number of the idle transportation equipment is equal to 1, issuing the current layer to the idle transportation equipment through a second layer changing instruction so that the idle transportation equipment is changed to the current layer; if the number of the idle transportation equipment is larger than 1, calculating the probability of the issued job tasks of the layer where the idle transportation equipment is located, and selecting target transportation equipment from the idle transportation equipment according to the probability; and issuing the current layer to the target transportation equipment through a third layer changing instruction so that the target transportation equipment is changed to the current layer.
The third layer changing module is used for selecting the transportation equipment corresponding to the layer with the minimum operation task to be executed from other layers with the transportation equipment under the condition that the emergency operation task exists on the current layer of the shelf, and taking the selected transportation equipment as target transportation equipment; and issuing the current layer of the goods shelf to the target transportation equipment through a fourth layer changing instruction so that the target transportation equipment is changed to the current layer of the goods shelf.
From the above description, it can be seen that after the operation tasks belonging to the same channel and the same layer are summarized, the values of the influence factors corresponding to the summarized operation task sets are obtained to determine the execution sequence of each operation task in the operation task sets, the transportation device executes the operation tasks according to the execution sequence, and the transportation device does not need to perform layer changing operation during task execution, so that the number of layer changing of the transportation device is reduced, and the operation efficiency is improved.
Fig. 6 shows an exemplary system architecture 600 of a task processing method or a task processing device to which an embodiment of the present invention can be applied.
As shown in fig. 6, the system architecture 600 may include terminal devices 601, 602, 603, a network 604, and a server 605. The network 604 serves to provide a medium for communication links between the terminal devices 601, 602, 603 and the server 605. Network 604 may include various types of connections, such as wire, wireless communication links, or fiber optic cables, to name a few.
A user may use the terminal devices 601, 602, 603 to interact with the server 605 via the network 604 to receive or send messages or the like. The terminal devices 601, 602, 603 are used for transporting goods to be delivered from or delivered to a warehouse, such as a shuttle, a stacker, and an AGV.
The server 605 may be a server that provides various services, and may perform processing such as locating received job tasks, constructing a job task set, determining an execution order of the job tasks, and the like, and feed back a processing result (e.g., an execution order of each job task) to the terminal device.
It should be noted that the task processing method provided in the embodiment of the present application is generally executed by the server 605, and accordingly, the task processing device is generally disposed in the server 605.
It should be understood that the number of terminal devices, networks, and servers in fig. 6 is merely illustrative. There may be any number of terminal devices, networks, and servers, as desired for implementation.
The invention also provides an electronic device and a computer readable medium according to the embodiment of the invention.
The electronic device of the present invention includes: one or more processors; a storage device, configured to store one or more programs, which when executed by the one or more processors, cause the one or more processors to implement a task processing method according to an embodiment of the present invention.
The computer-readable medium of the present invention has stored thereon a computer program which, when executed by a processor, implements a task processing method of an embodiment of the present invention.
Referring now to FIG. 7, shown is a block diagram of a computer system 700 suitable for use with an electronic device implementing an embodiment of the present invention. The electronic device shown in fig. 7 is only an example, and should not bring any limitation to the functions and the scope of use of the embodiments of the present invention.
As shown in fig. 7, the computer system 700 includes a Central Processing Unit (CPU)701, which can perform various appropriate actions and processes in accordance with a program stored in a Read Only Memory (ROM)702 or a program loaded from a storage section 708 into a Random Access Memory (RAM) 703. In the RAM 703, various programs and data necessary for the operation of the computer system 700 are also stored. The CPU 701, the ROM 702, and the RAM 703 are connected to each other via a bus 704. An input/output (I/O) interface 705 is also connected to bus 704.
The following components are connected to the I/O interface 705: an input portion 706 including a keyboard, a mouse, and the like; an output section 707 including a display such as a Cathode Ray Tube (CRT), a Liquid Crystal Display (LCD), and the like, and a speaker; a storage section 708 including a hard disk and the like; and a communication section 709 including a network interface card such as a LAN card, a modem, or the like. The communication section 709 performs communication processing via a network such as the internet. A drive 710 is also connected to the I/O interface 705 as needed. A removable medium 711 such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, or the like is mounted on the drive 710 as necessary, so that a computer program read out therefrom is mounted into the storage section 708 as necessary.
In particular, the processes described above with respect to the main step diagrams may be implemented as computer software programs, according to embodiments of the present disclosure. For example, embodiments of the present disclosure include a computer program product comprising a computer program embodied on a computer readable medium, the computer program containing program code for performing the method illustrated in the main step diagram. In such an embodiment, the computer program can be downloaded and installed from a network through the communication section 709, and/or installed from the removable medium 711. The computer program performs the above-described functions defined in the system of the present invention when executed by the Central Processing Unit (CPU) 701.
It should be noted that the computer readable medium shown in the present invention can be a computer readable signal medium or a computer readable storage medium or any combination of the two. A computer readable storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the foregoing. More specific examples of the computer readable storage medium may include, but are not limited to: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In the present invention, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device. In the present invention, however, a computer readable signal medium may include a propagated data signal with computer readable program code embodied therein, for example, in baseband or as part of a carrier wave. Such a propagated data signal may take many forms, including, but not limited to, electro-magnetic, optical, or any suitable combination thereof. A computer readable signal medium may also be any computer readable medium that is not a computer readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device. Program code embodied on a computer readable medium may be transmitted using any appropriate medium, including but not limited to: wireless, wire, fiber optic cable, RF, etc., or any suitable combination of the foregoing.
The flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to various embodiments of the present invention. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams or flowchart illustration, and combinations of blocks in the block diagrams or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
The modules described in the embodiments of the present invention may be implemented by software or hardware. The described modules may also be provided in a processor, which may be described as: a processor includes a construction module, a determination module, and a delivery module. The names of these modules do not constitute a limitation to the modules themselves in some cases, and for example, a building module may also be described as a module that builds job tasks belonging to the same aisle and the same layer as a job task set according to the position of a pallet where goods specified by the job task to be executed are located.
As another aspect, the present invention also provides a computer-readable medium that may be contained in the apparatus described in the above embodiments; or may be separate and not incorporated into the device. The computer readable medium carries one or more programs which, when executed by a device, cause the device to comprise: constructing the operation tasks belonging to the same channel and the same layer as an operation task set according to the position of goods on a shelf, which is specified by the operation tasks to be executed; under the condition that the transportation equipment exists on the current layer corresponding to the job task set, obtaining the value of an influence factor corresponding to at least one job task in the job task set so as to determine the execution sequence of the at least one job task; and issuing the at least one job task to the transportation equipment, so that the transportation equipment executes the job tasks according to the execution sequence.
From the above description, it can be seen that after the operation tasks belonging to the same channel and the same layer are summarized, the values of the influence factors corresponding to the summarized operation task sets are obtained to determine the execution sequence of each operation task in the operation task sets, the transportation device executes the operation tasks according to the execution sequence, and the transportation device does not need to perform layer changing operation during task execution, so that the number of layer changing of the transportation device is reduced, and the operation efficiency is improved.
The product can execute the method provided by the embodiment of the invention, and has corresponding functional modules and beneficial effects of the execution method. For technical details that are not described in detail in this embodiment, reference may be made to the method provided by the embodiment of the present invention.
The above-described embodiments should not be construed as limiting the scope of the invention. Those skilled in the art will appreciate that various modifications, combinations, sub-combinations, and substitutions can occur, depending on design requirements and other factors. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (11)
1. A task processing method, comprising:
constructing the operation tasks belonging to the same channel and the same layer as an operation task set according to the position of goods on a shelf, which is specified by the operation tasks to be executed;
under the condition that the transportation equipment exists on the current layer corresponding to the job task set, obtaining the value of an influence factor corresponding to at least one job task in the job task set so as to determine the execution sequence of the at least one job task;
and issuing the at least one job task to the transportation equipment, so that the transportation equipment executes the job tasks according to the execution sequence.
2. The method of claim 1, wherein the impact factors include any one or more of: whether the goods are blocked, the number of picking buffer positions corresponding to the operation tasks, the priority of the operation tasks and the distance between the goods position and a passage port;
the determining an execution order of the at least one job task comprises:
and determining the execution sequence of the at least one job task according to the sequence that the goods are not blocked, the number of the picking buffer positions is from large to small, the priority of the job tasks is from high to low, and the distance between the goods position and the passage port is from far to near.
3. The method of claim 1, wherein the transport equipment performs the job tasks in the execution order, comprising:
the transportation equipment executes the operation tasks according to a preset warehouse entry and exit rule and the execution sequence; the warehouse entry and exit rule is that one is brought out and one is brought in or one is brought in and one is brought out.
4. The method of claim 1, further comprising:
under the condition that the layer where the current transportation equipment is located does not have the operation tasks to be executed, selecting a target layer from other layers where the operation tasks to be executed but the transportation equipment does not exist according to a preset layer changing rule;
And issuing the target layer to the current transportation equipment through a first layer changing instruction so as to change the layer of the current transportation equipment to the target layer.
5. The method of claim 4, wherein the layer change rule comprises any one or more of: the other layers have emergency operation tasks, the number of the tasks with the operation task backlog time exceeding a preset first threshold value is changed from more to less, and the number of the operation tasks backlog is changed from more to less;
according to a preset layer changing rule, selecting a target layer from other layers which have the task to be executed but do not have the transportation equipment, wherein the method comprises the following steps:
and selecting a target layer from other layers which have the to-be-executed job task but do not have the transportation equipment according to the sequence that the emergency job task exists, the number of the tasks with the job task backlog time exceeding the first threshold value is from large to small, and the number of the job task backlogs is from large to small.
6. The method of claim 1, further comprising:
under the condition that no transportation equipment exists on the current layer of the goods specified by the operation task, acquiring idle transportation equipment on other layers of the shelf;
If the number of the idle transportation equipment is equal to 1, issuing the current layer to the idle transportation equipment through a second layer changing instruction so that the idle transportation equipment is changed to the current layer;
if the number of the idle transportation equipment is larger than 1, calculating the probability of the issued operation tasks on the layer where the idle transportation equipment is located, and selecting target transportation equipment from the idle transportation equipment according to the probability;
and issuing the current layer to the target transportation equipment through a third layer changing instruction so as to enable the target transportation equipment to change the layer to the current layer.
7. The method of claim 6, wherein the calculating the probability of the idle transportation device being assigned to the layer of the work task comprises:
calculating the operation probability of at least one type of stock equipment in the layer where the idle transportation equipment is located, and the ratio of the quantity of each type of stock equipment to the quantity of all stock equipment;
and taking the ratio of the quantity of each type of inventory equipment to the quantity of all inventory equipment as a weight, and carrying out weighted summation on the operation probability of each type of inventory equipment to obtain the probability of the issued operation task of the layer where the idle transportation equipment is located.
8. The method of claim 1, further comprising:
under the condition that the current layer of the shelf has the emergency operation task, selecting the transportation equipment corresponding to the layer with the least operation task to be executed from other layers with the transportation equipment, and taking the selected transportation equipment as target transportation equipment;
and issuing the current layer of the shelf to the target transportation equipment through a fourth layer changing instruction so that the target transportation equipment is changed to the current layer of the shelf.
9. A task processing apparatus, comprising:
the construction module is used for constructing the operation tasks belonging to the same channel and the same layer into an operation task set according to the position of the goods on the goods shelf, which is specified by the operation tasks to be executed;
the determining module is used for acquiring the value of an influence factor corresponding to at least one job task in the job task set under the condition that the transportation equipment exists on the current layer corresponding to the job task set so as to determine the execution sequence of the at least one job task;
and the issuing module is used for issuing the at least one job task to the transportation equipment so that the transportation equipment executes the job tasks according to the execution sequence.
10. An electronic device, comprising:
one or more processors;
a storage device for storing one or more programs,
when executed by the one or more processors, cause the one or more processors to implement the method of any one of claims 1-8.
11. A computer-readable medium, on which a computer program is stored, which, when being executed by a processor, carries out the method according to any one of claims 1-8.
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