CN114643202A - Method and device for sorting express items by wave times, computer equipment and storage medium - Google Patents
Method and device for sorting express items by wave times, computer equipment and storage medium Download PDFInfo
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Abstract
The application relates to a method, a device, computer equipment and a storage medium for sorting express items by wave times, wherein the method comprises the following steps: acquiring the current branch containing equipment information of sorting equipment and express information of express to be sorted; aiming at maximizing the quantity of the express items directly divided in a single wave, determining an express item sorting plan according to the equipment information and the express item information; the sorting plan comprises a mapping relation between sorting grids and flow directions in each sorting device in a single wave; and distributing the express item sorting plan to each sorting device, so that the sorting devices perform secondary sorting on the express items to be sorted based on the express item sorting plan. According to the method, the sorting plan of the sorting of the express items with different wave times is determined, and the express item quantity of the sorting plan which is directly sorted with a single wave time is maximized, so that the quantity of all the express items to be sorted in the transition is larger, the express item sending efficiency in the subsequent process is improved, and the express item sending time is shortened better.
Description
Technical Field
The application relates to the technical field of logistics, in particular to a method and a device for sorting express items by wave times, computer equipment and a storage medium.
Background
In the express delivery transportation process, an express company sets a distribution center in a delivery city and an express receiving city, and realizes the sorting of the collected goods and the bulk goods of the express in different flow directions through the distribution center, so as to ensure that the express arrives at a delivery client according to a correct route. The bulk transfer is a hub to which destinations flow, and is responsible for distributing parts from different receiving areas to the current destination to a secondary transfer or a network point in the area. The bulk cargo flow is realized by a full-automatic sorting machine, and express can correctly fall in a corresponding grid by establishing the mapping relation between the destination flow direction and the grid of the sorting machine.
Along with the higher and higher requirement of the market on the timeliness of express products, an express company plans to realize network-level package building in a bulk cargo transition, realizes transfer and direct delivery, reduces the times of repeatedly building and unpacking, and shortens the delivery time. However, the packet establishing rule of the mesh point granularity enables the packet establishing flow direction to be increased by times, and the existing sorting equipment for the transit station cannot guarantee that the original flow direction number is completely divided directly.
Disclosure of Invention
In view of the above, it is necessary to provide a method, an apparatus, a computer device and a storage medium for sorting express items by dividing the order of the express items, so as to increase the number of express items directly divided at the current transition as much as possible.
A method for sorting express items with a wave number, the method comprising:
acquiring the current subsection including equipment information of sorting equipment and express information of an express to be sorted;
determining an express mail sorting plan according to the equipment information and the express mail information by taking the maximization of the directly-divided quantity in a single wave as a target; the sorting plan comprises a mapping relation between sorting grids in each sorting device in a single wave and a flow direction;
distributing the express item sorting plan to each sorting device, and enabling the sorting device to carry out secondary sorting on the express items to be sorted based on the express item sorting plan.
In one embodiment, the determining an express mail sorting plan according to the equipment information and the express mail information with the goal of maximizing the quantity of the directly divided mails in a single wave time comprises:
dividing the express to be sorted into a first wave and a second wave according to the equipment information and the express information, and respectively determining an express sorting plan of the first wave and an express sorting plan of the second wave.
In one embodiment, the express mail information comprises: flow direction information of the express to be sorted, direct division demand information of each flow direction and all division information;
the device information includes: the method comprises the following steps that information of a delivery port of a sorting machine, information of a sorting cabinet, information of subordinate network points of a current branch, a quantity plan of express mail flowing in each wave, available bin information of the sorting machine, minimum available bin information of the sorting machine, the number of bins corresponding to delivery ports of the sorting machine and bin information contained in the sorting cabinet are obtained; the sorting equipment comprises a sorting machine and a sorting cabinet.
In one embodiment, the determining an express mail sorting plan according to the equipment information and the express mail information with the goal of maximizing the quantity of the directly divided mails in a single wave time comprises:
inputting the equipment information and the express mail information into a wave-order sorting model, and solving the wave-order model according to sorting constraint conditions to obtain an express mail sorting plan; the optimization target of the wave sorting model comprises: the amount of components directly divided in a single wave is maximized.
In one embodiment, the optimization objective of the wave sorting model further includes: the number of groups of sorting cabinets is minimized.
In one embodiment, the sorting constraints include: flow direction assignment unique constraint, sorter minimum available bin number constraint, sort wave number constraint, second wave total straight-divide constraint, and flow direction sorted number constraint.
In one embodiment, the dispatch sort plan further includes: whether the current branch in the first wave is completely mixed or not; the sorting constraints further include: and the mixed branch constraint between the current branch and the subordinate network points.
An apparatus for the wave-time sorting of mail items, the apparatus comprising:
the acquisition module is used for acquiring the current branch containing equipment information of sorting equipment and express mail information of express mails to be sorted;
the sorting plan determining module is used for determining an express sorting plan according to the equipment information and the express information by taking the maximization of the directly-divided piece quantity in a single wave as a target; the sorting plan comprises a mapping relation between sorting grids in each sorting device in a single wave and a flow direction;
and the sending module is used for distributing the express item sorting plan to each sorting device so that the sorting device carries out repeated sorting on the express items to be sorted based on the express item sorting plan.
A computer device comprising a memory and a processor, the memory storing a computer program, the processor implementing the following steps when executing the computer program:
acquiring the current branch containing equipment information of sorting equipment and express information of express to be sorted;
determining an express mail sorting plan according to the equipment information and the express mail information by taking the maximization of the directly-divided quantity in a single wave as a target; the sorting plan comprises a mapping relation between sorting grids in each sorting device in a single wave and a flow direction;
distributing the express item sorting plan to each sorting device, and enabling the sorting device to carry out secondary sorting on the express items to be sorted based on the express item sorting plan.
A computer-readable storage medium, on which a computer program is stored which, when executed by a processor, carries out the steps of:
acquiring the current branch containing equipment information of sorting equipment and express information of express to be sorted;
determining an express mail sorting plan according to the equipment information and the express mail information by taking the maximization of the directly-divided quantity in a single wave as a target; the sorting plan comprises a mapping relation between sorting grids in each sorting device in a single wave and a flow direction;
distributing the express item sorting plan to each sorting device, and enabling the sorting device to carry out secondary sorting on the express items to be sorted based on the express item sorting plan.
According to the wave-order sorting method, the wave-order sorting device, the computer equipment and the storage medium for the express mails, the express mail sorting plan of the express mails to be sorted is determined by acquiring the information of the express mails to be sorted and the equipment information of the sorting equipment contained in the transfer field division where the express mails are currently located according to the maximization of the direct component quantity of a single wave order, and the express mail sorting plan is sent to each piece of express mail sorting equipment, so that the piece of express mail sorting equipment sorts according to the express mail sorting plan. According to the method, the sorting plan of the sorting of the express items to be sorted is determined according to the wave times, and meanwhile, the sorting plan maximizes the express item quantity directly sorted according to the single wave time, so that the quantity of all the express items to be sorted in the transition is ensured to be larger, the express item sending efficiency in the subsequent process of the express items is improved, and the express item sending time is better shortened.
Drawings
FIG. 1 is a diagram illustrating an exemplary embodiment of a method for sorting express items using a wave sorting algorithm;
FIG. 2 is a flow chart illustrating a method for sorting express items according to a wave-time sequence in one embodiment;
FIG. 3 is a schematic flow chart illustrating sorting of express items at a transition in an exemplary embodiment;
FIG. 4 is a flow chart illustrating a method for sorting express items according to a specific embodiment;
FIG. 5 is a block diagram showing the construction of a wave sorting apparatus for express items according to an embodiment;
FIG. 6 is a diagram of the internal structure of a computer device in one embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
The method for sorting the express items by the times can be applied to the application environment shown in fig. 1. Wherein the terminal 102 communicates with the sorting equipment 104 over a network. The terminal 102 obtains information of the express items to be sorted and equipment information of sorting equipment contained in a transfer station subsection where the express items are located currently, determines an express item sorting plan of the express items to be sorted according to the maximization of the direct-sorting quantity of a single wave, and sends the express item sorting plan to each express item sorting equipment 104, so that the express item sorting equipment 104 sorts according to the express item sorting plan. Wherein, the terminal 102 can be, but is not limited to, various personal computers, notebook computers, smart phones, tablet computers and portable wearable devices, and the sorting device 104 can include an automatic sorting machine, etc.
In one embodiment, as shown in fig. 2, a method for sorting express items by wave times is provided, which is described by taking the method as an example for being applied to the terminal in fig. 1, and includes steps S210 to S230.
Step S210, the current branch contains equipment information of the sorting equipment and express information of the express to be sorted.
In one embodiment, the current branch refers to the current transition. The transit station (bulk cargo collecting and distributing center) is a logistics distribution center with bulk cargo function, which is set up in a destination city during express delivery. The main function of the bulk cargo transition, namely the bulk cargo function, is to collect the geographically close express items according to the final address of the express item and a certain rule, and send the express items to the final address of the express item through uniform transport capacity. For example, small pieces from different cities, with final destinations being zip code 210004, would be collectively packaged into 210004 packages for shipment to vehicles destined for that destination. The package creation rule refers to the package creation granularity determined by logistics planning, and the granularity can be a secondary transfer station, a network point or even a unit area (such as a single cell). The finer the granularity of the package is, the more the links of package building and unpacking in the process of dispatching are greatly reduced, and the higher the processing complexity of the transit is.
In a modern transfer station, a full-automatic sorting machine and a sorting cabinet are adopted to build packages of express items in the same area. The full-automatic sorting machine supplies the pieces through a plurality of piece supply ports, the scanning equipment of the sorting machine scans the destination flow direction information of the ticket pieces, and the sorting machine generates a control instruction to control the ticket pieces to fall into the corresponding grids. The mapping relation between the flow direction and the grid is determined by a sorting plan model. There is typically a one-to-one or one-to-many relationship between the cells and the flow direction. If a cell corresponds to a flow direction, the flow direction is divided directly, and the cell is called a straight division cell. The packaging vehicle can be directly built in the direct flow direction without other operations. If one cell corresponds to a plurality of flow directions, the flow direction is mixed with other flow directions, and the cell is called a mixing cell. The mixed flow direction has a plurality of flow directions, and the mixed flow direction needs to be uniformly pulled into a sorting cabinet to be directly divided by using more grids. Therefore, the flow direction and the number of the components of the mixture are reduced as much as possible, the workload of field operators can be reduced, and the labor cost can be reduced. If the number of the flow directions to be sorted is less than the number of the grids of the sorting machine, all the flow directions can be directly divided. If the number of the flow direction to be sorted is larger than the number of the grids of the sorting machine, the flow direction must be mixed and divided on the sorting cabinet.
The sorting equipment sorts the express items to be sorted according to a certain sorting plan. In one embodiment, the sorting equipment includes sorting machines, sorting cabinets, and the like. Further, the equipment information of the sorting equipment comprises the number of the sorting equipment of the current branch, the supply port of each sorting equipment, the number of the grid ports corresponding to each sorting equipment and the like. In one embodiment, the device information includes: information of a delivery port of the sorting machine, information of a sorting cabinet, information of subordinate network points of a current subsection, a quantity plan of express mail flowing in each wave, available bin information of the sorting machine, minimum available bin information of the sorting machine, the number of bins corresponding to the delivery port of the sorting machine, and bin information contained in the sorting cabinet; the sorting equipment comprises a sorting machine and a sorting cabinet.
The sorting machine comprises a sorting machine, a sorting device and a control device, wherein a mail supply port of the sorting machine is used for placing express mails to be sorted, grids are used for placing the express mails sorted by the sorting device, and one grid can correspond to one express mail in a flow direction or a plurality of express mails in a plurality of flow directions; in one embodiment, the feeder information for the sorters includes the number of feeders each sorter contains. In another embodiment, the sorting cabinet information is the number of the sorting cabinets contained in the current subsection; the sorting cabinets contain grid information including the number of grids each sorting cabinet contains.
The subsection is the superior address of the network node, and a plurality of network nodes form a subsection; in one embodiment, the subordinate node information of the currently located branch includes node identifiers of nodes corresponding to the currently located branch.
The part quantity plan refers to a part quantity planned in one of the wave times in any flow direction, and as in a specific embodiment, the part quantity plan includes a part quantity plan in which the flow direction i is within a first wave time and a part quantity plan in which the flow direction i is within a second wave time.
The least available cells of the sorting machine indicate that the transfer station currently comprises a plurality of sorting machines, wherein the least available cells of one sorting machine have the least number of cells.
The express to be sorted is the express which needs to be sorted for the second time in the embodiment; in one embodiment, the express to be sorted refers to the express which is sent to the current branch in the same time period. Further, the express information of the express to be sorted can comprise attribute information of the express, such as a sender, a receiver, a destination, an aging requirement of the express, a type of conveyed article and the like. In one embodiment, the express mail information includes: flow direction information of the express to be sorted, direct division requirement information of each flow direction and all division information.
Wherein, each express is purposefully, the flow direction of the express can be determined according to the destination and/or the current transfer; in one embodiment, the flow direction information of the to-be-sorted express items comprises the flow direction of each to-be-sorted express item. The direct division requirement information of the flow direction may be whether direct division is required for a certain flow direction, for example, the direct division requirement information of the flow direction i is required. Further, the direct division requirement information can be determined according to the actual situation of the flow direction. The information of the transition represented by the section information, in one embodiment, the acquired section information includes section information directly associated with the section where the current position is located.
Furthermore, in the process of sorting the express items by the sorting equipment, all the flow-direction items are sorted to the corresponding grids by the sorting equipment according to a certain sorting plan, and then the express items are packaged at each grid.
Step S220, aiming at maximizing the quantity of the express items directly divided in a single wave, determining an express item sorting plan according to the equipment information and the express item information; the sort plan includes a mapping of sort bins to flow directions in each sorting device in a single pass.
The wave times mean that the express items are divided into different times for sorting. The express to be sorted can be sorted only by one wave, and can also be sorted by two waves. A straight division means that one bin corresponds to only one flow direction. The direct component quantity means that one lattice only corresponds to the quantity of the express items contained in the express package established in one flow direction.
The express mail sorting plan refers to the mapping relation between the sorting grids and the flow direction of the sorting equipment, wherein the flow direction of any one of the sorting equipment is within a single wave for all express mails to be sorted. In one embodiment, the sort plan is divided into two passes, wherein any flow direction within the first pass includes the following three conditions: whether it is divided directly completely, whether it is divided with the sub-portions, and whether it is not divided with the sub-portions. Wherein, the complete straight division means that the built package has one express mail with one flow direction; mixing and dividing the parts, namely directly building a mixed packet according to the upper-level part in the first wave, wherein a packet flow has a plurality of network point codes which belong to the part downwards; the mixed packages are not divided along with the parts, namely, the mixed packages are not built according to the upper-level parts in the first wave, and the mixed packages are re-sorted on the sorting machine to the network points in the second wave.
After the express mail sorting plan is obtained, the mapping relationship between the sorting grids of the sorting equipment in each pass and the flow direction can be known, for example, for 75 grids in the sorting machine 1, which flow direction corresponds to each grid, or which flow directions correspond to each grid; on the basis, in the sorting process, the sorting machine 1 can determine the section to which the express to be sorted needs to be sorted according to the flow direction of the express to be sorted for the express to be sorted from the express supply port.
Further, in one embodiment, determining the express mail sorting plan according to the equipment information and the express mail information with the goal of maximizing the quantity of the directly divided mails in a single wave time comprises: according to the equipment information and the express information, the express to be sorted is divided into a first wave and a second wave, and an express sorting plan of the first wave and an express sorting plan of the second wave are determined respectively.
In one embodiment, in the first-pass sorting process, the sorting plans adopted by the sorting machines are the same, and in the second-pass sorting process, because the express items sorted in the second pass are not distributed and mixed after being sorted in the first pass, but the express items are sorted in the first pass according to the corresponding plans, and the information about which flow directions contained in the same grid is clear, the sorting plans in the second pass can be different for different sorting machines; the planning of the sorting plan, in particular for the second pass, is determined from the actual situation.
And step S230, distributing the express item sorting plan to each sorting device, and enabling the sorting devices to carry out secondary sorting on the express items to be sorted based on the express item sorting plan.
And sending the express item sorting plan determined by the steps to sorting equipment, so that the sorting equipment can know the lattice to be sorted for each express item to be sorted, and sorting of the express items is completed. In one embodiment, the express mail sorting plan comprises a first-wave express mail sorting plan and a second-wave express mail sorting plan, and in the first-wave sorting process, the sorting equipment sorts all express mails according to the first-wave express mail sorting plan; in the second wave-time sorting process, the sorting equipment performs secondary sorting on the express items needing to be sorted for the second wave-time according to the express item sorting plan for the second wave-time.
In this embodiment, the express to be sorted is divided into two waves to determine the corresponding sorting plan, and the direct sorting express quantity in a single wave is maximized as a target, so that the direct sorting express quantity is maximized, the flow direction quantity of mixed sorting is reduced, and the unpacking pressure is reduced for downstream nodes.
According to the wave-order sorting method of the express mails, the information of the express mails to be sorted and the equipment information of the sorting equipment contained in the transfer field division where the express mails are located at present are obtained, the express mail sorting plan of the express mails to be sorted is determined by maximizing the direct component quantity of a single wave order, and the express mail sorting plan is sent to each piece of express mail sorting equipment, so that the express mail sorting equipment sorts the express mails according to the express mail sorting plan. According to the method, the sorting plan of the express items to be sorted is determined according to the wave times, and meanwhile, the express item quantity of the express items to be sorted directly is maximized according to the sorting plan according to the single wave time, so that the quantity of all the express items to be sorted directly in the transition is larger, the express item sending efficiency in the subsequent process is improved, and the express item sending time is shortened better.
In one embodiment, aiming at maximizing the quantity of the express items directly divided in a single wave, the method for determining the express item sorting plan according to the equipment information and the express item information comprises the following steps: inputting the equipment information and the express mail information into a wave-order sorting model, and solving the wave-order model according to sorting constraint conditions to obtain an express mail sorting plan; the optimization target of the wave sorting model comprises the following steps: the amount of components directly divided in a single wave is maximized.
In the embodiment, a wave sorting model is used for solving a sorting plan for sorting the express items to be sorted; the express item information and the equipment information are input into the wave-order sorting model, then the wave-order sorting model is solved according to the sorting constraint condition and the optimization target, and a wave-order sorting plan corresponding to the express items to be sorted can be obtained, wherein the wave-order sorting plan comprises the mapping relation between the sorting grids of the sorting equipment and the flow direction in a single wave order, namely the sorting grids corresponding to the flow direction of the express items to be sorted in each wave order. In one embodiment, the wave-time sorting model divides the express to be sorted into two wave times for sorting, and the two wave times are solved to obtain the sorting plans respectively corresponding to the two wave times.
Further, in one embodiment, the optimization objective of the wave sorting model further includes: the number of groups of sorting cabinets is minimized.
The sorting cabinet is used for manually sorting the mixed and separated express items sorted by the sorting machine for the second time; the mixed express mail is an express mail in a grid with one grid corresponding to a plurality of flow directions after being sorted by the sorting machine.
In this embodiment, the optimization objectives of the wave sorting model include two; in one embodiment, the first optimization objective is the maximization of the number of straight components of a single wave, and the second optimization objective is the minimization of the sorting cabinets used.
Further, in one embodiment, the sorting constraints of the wave sorting model include: the method comprises the steps of flow direction distribution unique constraint, sorting machine minimum available cell number constraint, sorting wave time constraint, second wave time total straight-dividing constraint and flow direction sorted time constraint.
The flow direction assignment unique constraint means that for any flow direction, the assignment condition of the first wave is unique, that is, any flow direction in the first wave can only be planned to be one of direct division, mixed division with parts and mixed division, and mixed division without parts and mixed division.
The minimum available cell number of the sorting machine is the cell number contained in the sorting machine with the minimum cell number in the current part; in one embodiment, the sorter minimum available bin number constraint includes the number of bins allocated in the first wave direction not exceeding the sorter minimum available bin number.
The sorting frequency is the frequency required for finishing sorting the express mails to be sorted in the same batch; in one embodiment, the sort order constraint includes a number of bins required for a first order sort to flow without mixing with the fraction that is no greater than a number of all bins, wherein all bins include sorter bins and sort bin bins.
In one embodiment, the second pass total straight-division constraint is that the flow entering the second pass sorting needs to be divided completely; in a specific embodiment, the second order all-straight-component constraint comprises: in the second wave, the total flow direction distributed to a certain piece supply opening is not more than the number of the grids of the piece supply opening, the total flow direction distributed to a certain sorting cabinet is not more than the number of the grids of the sorting cabinet, and a sorting grid or a sorting cabinet is distributed in the second wave aiming at the flow direction which is not mixed with the distribution after the first wave sorting.
In one embodiment, the flow direction is restricted by the sorting times, namely the flow direction of the straight division in the first wave sorting plan is sorted only once; in one embodiment, the flow direction is constrained by the sort times including dividing the flow direction directly in a first pass and allocating a sorter bin or sorting cabinet in a second pass.
Further, in one embodiment, the dispatch sort plan further includes: whether the current branch in the first wave is completely mixed or not; in this embodiment, the sorting constraints of the wave sorting model further include: and the mixed branch constraint between the current branch and the subordinate network points.
Whether the first wave times are completely mixed or not indicates whether all flow directions are mixed or not after the first wave times are sorted; the mixed score constraint between the current branch and the subordinate nodes refers to the constraint relation between whether the superior is mixed score or not and whether all the subordinate nodes are mixed score or not; in one embodiment, the mixing constraint between the current branch and the subordinate nodes comprises: for any part, the result of whether the part i is completely mixed is the intersection of whether the subordinate nodes are mixed with the part, and for any flow direction, if the result in the first wave-time sorting of the current part is mixed with the part, all the flow directions under the subordinate nodes are mixed with the part.
Still further, in one embodiment, the dispatch plan also includes the number of groups of desired sortation bins. The number of the required sorting cabinets is the number of the sorting cabinets required in the process of carrying out secondary sorting on the express items of the shift; it will be appreciated that the number of required sorting cabinets does not exceed the number of sorting cabinets currently contained in the section.
In the above embodiment, the wave sorting model is constrained in different aspects, and it is ensured that the express sorting plan obtained by solving the wave sorting model is the sorting plan output with the optimized target under the precondition of meeting the logic.
In one embodiment, solving the wave sorting model can be implemented by any solver, such as a CPLEX (a mathematical optimization technique) or Gurobi (a large-scale mathematical programming optimizer) solver. In the embodiment, the wave-order sorting model is solved according to the optimization target through the solver, so that the wave-order sorting plan of the express mails can be quickly obtained, and the sorting efficiency of the express mails is improved.
In one embodiment, fig. 3 is a schematic flow chart of sorting the express items in a transit station; the normal bulk cargo distributing process comprises the following steps: the pieces with different flow directions are unloaded from the unloading port (process (r) shown in the figure), and the pieces are supplied from the piece supply ports of the sorting machines respectively. The sorting plans of the sorting machine 1, the sorting machine 2 and the sorting machine 3 are completely the same, and all the flow direction pieces are sorted to the corresponding grids by the sorting machine according to a certain flow direction packet building rule (the process is two as shown in the figure). If the flow direction is divided directly, namely the grid only comprises one flow direction, the field sorting personnel directly build packages for the express mails and then send the packages to the loading port (as shown in the process III in the figure). If the flow direction is mixed, namely the grid comprises a plurality of flow directions, but each flow direction needs to be independently packaged, the flow direction is firstly divided into manual sorting cabinets (the process (r) shown in the figure) and then the car loading is carried out.
Because the front section can not control the supply of each piece in each flow direction at which piece supply port, under the condition that the sorting plans of the three sorting machines are completely equivalent, the maximum allowable flow direction number of the single sorting of the sorting machines cannot be larger than the maximum available grid port number, otherwise, mixed packages are built and sent out in some flow directions.
In the example of fig. 3, the maximum available number of cells in the flow, i.e., the total number of cells of the minimum sorting machine + the total number of cells of all sorting cabinets, i.e., 2 × 75+5 × 50-5, is 395. When the packet is constructed to the network point, the total number of the flow direction is 1366, which can not be directly divided in one wave time in any way, and part of the flow direction is necessarily sent out to the mixed packet to be constructed. Therefore, in the first pass, the straight-divided part flows to send out the flow with higher requirement for time efficiency first, then the rest pieces are poured into the piece supply port of the sorting machine again, the sorting plans of the three sorting devices are switched, and the distribution relation of the flow to the grid ports is rearranged, so that the first pass has no straight-divided flow to the straight-divided part (the process is the fifth process shown in the figure). In the second pass, since the mixed package has been built in the first pass, the sorting plans of the three sorting machines may not be completely equivalent, and therefore, the total number of flow directions that can be actually divided in the straight run, i.e., the total number of cells of the least-sorting machine, the total number of sorting cabinets, the total number of sorting machines, the total number of cells of all sorting machines, and the number of cells of all sorting cabinets, i.e., 2 × 75-5-3+2 × 75+2 + 75+2 × 181+5 × 50, 1054, may be equal. Although not all the streams can be divided directly, the number of the mesh points which can be divided directly is greatly increased. In fact, some of the nodes belonging to the same branch have extremely small number (the branch is the upper address of the node, and a plurality of nodes form a branch), and the number of the nodes is small (less than 100 nodes), so that the mixed packet direct sending can not generate a particularly large influence.
Fig. 4 is a schematic flow chart of a method for sorting express items by wave in one embodiment. In this embodiment, the method for sorting express items by wave times includes the following steps:
and acquiring express item information of all express items to be sorted in the same batch, and taking the express item information and equipment information of sorting equipment contained in the current branch as input to the wave-order sorting model. And solving the wave sorting model to obtain the express sorting plan of the batch of the express to be sorted.
The express information comprises flow direction information, direct division demand information and division information of the express. The equipment information of the sorting equipment comprises the number of sorting machines, the number of workpiece supply ports of each sorting machine, the number of grids of a single workpiece supply port of each sorting machine, the number of sorting cabinets, the number of grids of a single sorting cabinet and the like.
Wherein, for the express mail sorting plan obtained by model solving:
in either flow direction, at the first pass, there may be three situations:
(1) completely dividing the mixture directly. That is, the packet flow has only one and only one flow direction;
(2) mixing the components according to the parts. In the first wave, a mixed packet is directly built according to the upper level part, and a packet flow has a plurality of network point codes which belong to the part downwards;
(3) it is not mixed with each other. In the first wave, the mixed package is not built according to the upper part, and the mixed package is re-loaded on the sorting machine in the second wave and is directly sorted to the network points.
Therefore, in the above three cases, only the flow direction not mixed with the division is completely divided directly in the second wave. If the express items which belong to the flow directions of the conditions (1) and (2) arrive within the second wave sorting time interval, the express items can be selected to be stocked or uniformly distributed to the reserved return flow grid for independent distribution.
The primary optimization goal of the wave sorting model is to maximize the direct component quantity in the first wave, so that the flow direction of large quantity of pieces can be processed, the risk of the second wave to piece unprocessed can be reduced, meanwhile, the sorting quantity of the second wave can be reduced, and the time of the second wave can be shortened. Secondly, the direct component quantity of the second wave is maximized, the flow direction quantity of mixed components is reduced, and the unpacking pressure is reduced for downstream nodes. Secondly, the number of sorting cabinets used is reduced as much as possible.
The following constraints are followed in the wave sorting process:
(1) each flow direction is unique to the first wave sorting mode;
(2) the upper limit of the number of each wave secondary grid is restricted;
(3) and (5) uniformly mixing and restricting the mesh points. If one net point is mixed, all the net points belonging to the same subsection are mixed;
(4) and (5) wave sorting rule constraint. Depending on the flow direction, sorting in the first pass, there may be different processing rules in the second pass.
(5) Other additional rule constraints. Such as certain flow directions must be directly divided at the first order, etc.
The input of the wave sorting model is as follows:
(1) the departure time is used for determining whether the flow direction needs to be directly divided at the first wave frequency;
(2) a division code;
(3) a dot code;
(4) a first wave order component amount;
(5) a second wave arrival quantity;
(6) the number of the network points in the upper level subsection code;
the outputs of the wave-time sorting model are a sorting plan of a certain flow direction in a first wave time, a distribution grid which does not mix with the distribution flow direction in a second wave time, and the number of used sorting cabinets.
For the wave sorting model, the following is specifically described:
inputting a wave sorting model:
sjNumber of available slots of sorter j
sminNumber of available cells of sorting machine with minimum cells
s(n)Number of cells of supply opening n
scNumber of compartments of a set of sorting cabinets
MobjA sufficiently large number for optimizing the target
Decision variables of the wave sorting model:
xdi0-1 variable, ith flow direction, whether to divide directly at the first wave, divide directly by-1, and the others by-0;
xmi0-1 variable, ith flow direction, whether to mix with the subdivision at the first wave, not mix with the subdivision-1, other-0;
xai0-1 variable, ith flow direction, whether to be mixed with the subdivision at the first wave, mixed with the subdivision to-1, and other-0;
diri0-1 variable, first order, whether fraction i is completely mixed, 1-yes, 0-no
c, integer variable, number of sorting cabinets
And thirdly, optimizing the objective of the wave-order sorting model:
(1) the first order, all of which must be split as directly as possible in the first order to maximize the amount of components that are split directly in the direction of flow
(2) The second wave direct division has the largest flow direction direct division component quantity
(3) Minimizing the number of sorting cabinets
minc
Fourthly, constraint of the wave sorting model:
1. in either direction, the first wave time distribution condition is unique
2. The result of whether any part, part i, is totally mixed is the intersection of the subordinate net points
4. The number of the grids distributed in the first wave flow direction is not more than the number of the grids of the sorting machine with the minimum number of the grids
5. The number of the grids needed by the first wave sub-mixed flow direction is not more than the total number of the grids of all the devices
6. Second order, the sum of the flow directions assigned to a particular supply/sorting cabinet must not exceed the number of compartments of the supply/sorting cabinet
7. In either direction, if the first wave is not mixed with the fraction, the second wave occupies a sorter compartment or a sorting cabinet
8. In any flow direction, if the first wave is divided directly or is divided along with the division, the second wave is not arranged with the sorting machine grid or the sorting cabinet
The quick sorting method provides a brand new sorting optimization model aiming at the problem of sorting the bulk goods of the full-automatic sorting machine in a bulk goods scene, the model takes the maximized first-order direct sorting quantity as a main target, reduces the using quantity of sorting cabinets as a secondary target, optimizes the matching relation between sorting equipment in different orders and grids, realizes multi-order sorting, and solves the sorting problem that the flow direction number in a single shift is far greater than the grid number. The verification proves that the in-shift sorting in all flow directions can be realized, the direct component quantity of the first wave can reach 58.33%, and the service requirement is met.
It should be understood that, although the steps in the flowcharts involved in the above embodiments are shown in order as indicated by the arrows, the steps are not necessarily performed in order as indicated by the arrows. The steps are not performed in the exact order shown and described, and may be performed in other orders, unless explicitly stated otherwise. Moreover, at least a part of the steps in each flowchart involved in the above embodiments may include multiple steps or multiple stages, which are not necessarily performed at the same time, but may be performed at different times, and the order of performing the steps or stages is not necessarily sequential, but may be performed alternately or alternately with other steps or at least a part of the steps or stages in other steps.
In one embodiment, as shown in fig. 5, there is provided a wave sorting apparatus for express items, including: an acquisition module 510, a sort plan determination module 520, and a sending module 530, wherein:
an obtaining module 510, configured to obtain the current branch including equipment information of a sorting device and express mail information of an express to be sorted;
a sorting plan determining module 520, configured to determine an express sorting plan according to the equipment information and the express information, with a goal of maximizing the quantity of directly sorted pieces in a single wave; the sorting plan comprises a mapping relation between sorting grids and flow directions in each sorting device in a single wave;
and the sending module 530 is configured to distribute the express item sorting plan to each sorting device, so that the sorting device performs progressive sorting on the express items to be sorted based on the express item sorting plan.
According to the wave-order sorting device for the express mails, the express mail sorting plan of the express mails to be sorted is determined by acquiring the information of the express mails to be sorted and the equipment information of the sorting equipment contained in the transfer field division where the express mails are located currently, and the express mail sorting plan is sent to each piece of express mail sorting equipment, so that the express mail sorting equipment sorts according to the express mail sorting plan. The device determines the sorting plan of the sorting by the wave times through the express to be sorted, and simultaneously, the sorting plan maximizes the express quantity directly sorted by the single wave times, so that the quantity of all the express to be sorted in the transfer is larger, the express sending efficiency is improved in the subsequent process, and the express sending time is better shortened.
In an embodiment, the sorting plan determining module 520 of the apparatus is further configured to divide the express items to be sorted into a first wave and a second wave according to the equipment information and the express item information, and determine an express item sorting plan of the first wave and an express item sorting plan of the second wave respectively.
In one embodiment, the express information includes: flow direction information of the express to be sorted, direct division demand information of each flow direction and all division information; the device information includes: information of a delivery port of the sorting machine, information of a sorting cabinet, information of subordinate network points of a current subsection, a quantity plan of express mail flowing in each wave, available bin information of the sorting machine, minimum available bin information of the sorting machine, the number of bins corresponding to the delivery port of the sorting machine, and bin information contained in the sorting cabinet; the sorting equipment comprises a sorting machine and a sorting cabinet.
In an embodiment, the sorting plan determining module 520 of the apparatus is specifically configured to: inputting the equipment information and the express mail information into a wave-order sorting model, and solving the wave-order model according to sorting constraint conditions to obtain an express mail sorting plan; the optimization target of the wave sorting model comprises the following steps: the amount of components directly divided in a single wave is maximized.
In one embodiment, the optimization objective of the wave sorting model further comprises: the number of groups of sorting cabinets is minimized.
In one embodiment, the sorting constraints include: flow direction assignment unique constraint, sorter minimum available bin number constraint, sort wave number constraint, second wave total straight-divide constraint, and flow direction sorted number constraint.
In one embodiment, the dispatch sort plan further includes: whether the current branch in the first wave is completely mixed or not; the sorting constraints further include: and the mixed branch constraint between the current branch and the subordinate network points.
The specific definition of the sorting device for the quick dispatch by the wave times can be referred to the definition of the sorting method for the quick dispatch by the wave times, and will not be described herein again. All or part of each module in the wave sorting device of the express mail can be realized by software, hardware and a combination thereof. The modules can be embedded in a hardware form or independent from a processor in the computer device, and can also be stored in a memory in the computer device in a software form, so that the processor can call and execute operations corresponding to the modules.
In one embodiment, a computer device is provided, which may be a terminal, and its internal structure diagram may be as shown in fig. 6. The computer device includes a processor, a memory, a communication interface, a display screen, and an input device connected by a system bus. Wherein the processor of the computer device is configured to provide computing and control capabilities. The memory of the computer device comprises a nonvolatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of an operating system and computer programs in the non-volatile storage medium. The communication interface of the computer device is used for carrying out wired or wireless communication with an external terminal, and the wireless communication can be realized through WIFI, an operator network, NFC (near field communication) or other technologies. The computer program is executed by a processor to implement a method for sorting express items by wave times. The display screen of the computer equipment can be a liquid crystal display screen or an electronic ink display screen, and the input device of the computer equipment can be a touch layer covered on the display screen, a key, a track ball or a touch pad arranged on the shell of the computer equipment, an external keyboard, a touch pad or a mouse and the like.
Those skilled in the art will appreciate that the architecture shown in fig. 6 is merely a block diagram of some of the structures associated with the disclosed aspects and is not intended to limit the computing devices to which the disclosed aspects apply, as particular computing devices may include more or less components than those shown, or may combine certain components, or have a different arrangement of components.
In one embodiment, a computer device is provided, comprising a memory having a computer program stored therein and a processor that when executing the computer program performs the steps of:
acquiring the current branch containing equipment information of sorting equipment and express information of express to be sorted; aiming at maximizing the quantity of the express items directly divided in a single wave, determining an express item sorting plan according to the equipment information and the express item information; the sorting plan comprises a mapping relation between sorting grids and flow directions in each sorting device in a single wave; and distributing the express item sorting plan to each sorting device, so that the sorting devices perform secondary sorting on the express items to be sorted based on the express item sorting plan.
In one embodiment, the processor when executing the computer program further performs the steps of: according to the equipment information and the express information, the express to be sorted is divided into a first wave and a second wave, and an express sorting plan of the first wave and an express sorting plan of the second wave are determined respectively.
In one embodiment, the processor, when executing the computer program, further performs the steps of: inputting the equipment information and the express mail information into a wave-order sorting model, and solving the wave-order model according to sorting constraint conditions to obtain an express mail sorting plan; the optimization target of the wave sorting model comprises the following steps: the amount of components directly divided in a single wave is maximized.
In one embodiment, a computer-readable storage medium is provided, having a computer program stored thereon, which when executed by a processor, performs the steps of:
acquiring the current branch containing equipment information of sorting equipment and express information of express to be sorted; aiming at maximizing the quantity of the express items directly divided in a single wave, determining an express item sorting plan according to the equipment information and the express item information; the sorting plan comprises a mapping relation between sorting grids and flow directions in each sorting device in a single wave; and distributing the express item sorting plan to each sorting device, so that the sorting devices perform secondary sorting on the express items to be sorted based on the express item sorting plan.
In one embodiment, the computer program when executed by the processor further performs the steps of: according to the equipment information and the express information, the express to be sorted is divided into a first wave and a second wave, and an express sorting plan of the first wave and an express sorting plan of the second wave are determined respectively.
In one embodiment, the computer program when executed by the processor further performs the steps of: inputting the equipment information and the express mail information into a wave-order sorting model, and solving the wave-order model according to sorting constraint conditions to obtain an express mail sorting plan; the optimization target of the wave sorting model comprises the following steps: the amount of components directly divided in a single wave is maximized.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by hardware instructions of a computer program, which can be stored in a non-volatile computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. Any reference to memory, storage, database or other medium used in the embodiments provided herein can include at least one of non-volatile and volatile memory. Non-volatile Memory may include Read-Only Memory (ROM), magnetic tape, floppy disk, flash Memory, optical storage, or the like. Volatile Memory can include Random Access Memory (RAM) or external cache Memory. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM), among others.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above examples only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A method for sorting express items by wave times, which is characterized in that the method comprises the following steps:
acquiring the current branch containing equipment information of sorting equipment and express information of express to be sorted;
determining an express mail sorting plan according to the equipment information and the express mail information by taking the maximization of the directly-divided quantity in a single wave as a target; the sorting plan comprises a mapping relation between sorting grids in each sorting device in a single wave and a flow direction;
distributing the express item sorting plan to each sorting device, and enabling the sorting device to carry out secondary sorting on the express items to be sorted based on the express item sorting plan.
2. The method of claim 1, wherein determining the dispatch plan based on the equipment information and the dispatch information with the goal of maximizing the quantity of the dispatch sorted directly in a single wave, comprises:
dividing the express to be sorted into a first wave and a second wave according to the equipment information and the express information, and respectively determining an express sorting plan of the first wave and an express sorting plan of the second wave.
3. The method of claim 1, wherein the express information comprises: flow direction information of the express to be sorted, direct division demand information of each flow direction and all division information;
the device information includes: the method comprises the following steps that information of a delivery port of a sorting machine, information of a sorting cabinet, information of subordinate network points of a current branch, a quantity plan of express mail flowing in each wave, available bin information of the sorting machine, minimum available bin information of the sorting machine, the number of bins corresponding to delivery ports of the sorting machine and bin information contained in the sorting cabinet are obtained; the sorting equipment comprises a sorting machine and a sorting cabinet.
4. The method of claim 3, wherein determining the dispatch plan based on the equipment information and the dispatch information with the goal of maximizing the quantity of the dispatch sorted directly in a single wave, comprises:
inputting the equipment information and the express mail information into a wave-order sorting model, and solving the wave-order model according to sorting constraint conditions to obtain an express mail sorting plan; the optimization target of the wave sorting model comprises the following steps: the amount of components directly divided in a single wave is maximized.
5. The method of claim 4, wherein the optimization objective of the wave sorting model further comprises: the number of groups of sorting cabinets is minimized.
6. The method of claim 5, wherein the sorting constraints comprise:
the method comprises the steps of flow direction distribution unique constraint, sorting machine minimum available cell number constraint, sorting wave time constraint, second wave time total straight-dividing constraint and flow direction sorted time constraint.
7. The method of claim 6, wherein the dispatch sort plan further comprises: whether the current branch in the first wave is completely mixed or not;
the sorting constraints further include: and the mixed branch constraint between the current branch and the subordinate network points.
8. A device for the sorting of items to be sorted with a wave of speed, characterized in that it comprises:
the acquisition module is used for acquiring the current branch containing equipment information of sorting equipment and express mail information of express mails to be sorted;
the sorting plan determining module is used for determining an express sorting plan according to the equipment information and the express information by taking the maximization of the directly-divided express quantity in a single wave as a target; the sorting plan comprises a mapping relation between sorting grids in each sorting device in a single wave and a flow direction;
and the sending module is used for distributing the express item sorting plan to each sorting device so that the sorting device carries out repeated sorting on the express items to be sorted based on the express item sorting plan.
9. A computer device comprising a memory and a processor, the memory storing a computer program, characterized in that the processor, when executing the computer program, implements the steps of the method of any of claims 1 to 7.
10. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the method of any one of claims 1 to 7.
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