CN-121776111-B - Intelligent control method of express sorting system

Abstract

The invention discloses an intelligent control method of an express sorting system, which relates to the field of express sorting control and comprises the steps of calculating route urgency scores of various express items by analyzing express item information and extracting timeliness commitments, and dividing urgency levels and destination subgroups so as to obtain express priority; calculating real-time sorting efficiency values of all sorting ports through route urgency scores of the express delivery, conveying time reaching candidate sorting ports and real-time queue lengths of the sorting ports, screening optimal target sorting ports, dynamically adjusting the speed of a conveyor belt by monitoring queue states of the target sorting points on corresponding conveyor belt sections in real time, distributing grabbing tasks for idle manipulators according to the route urgency scores of the express delivery, realizing cooperative control of the conveyor belt and the manipulators, guaranteeing preferential treatment of high-efficiency express delivery through quantification of time efficiency urgency and dynamic evaluation of sorting port efficiency, and improving overall efficiency of a sorting system.

Inventors

• SUN WEIYUE

Assignees

• 名客(山东)智能制造有限公司

Dates

Publication Date

20260512

Application Date

20260305

Claims (7)

1. 1. An intelligent control method of an express sorting system is characterized by comprising the following steps: analyzing the express delivery face list information, and carrying out centralized processing on an exception handling port appointed by the unresolveable express delivery allocation; For express delivery with successful analysis, acquiring express delivery time-lapse promises, calculating route emergency score of each express delivery, and judging express delivery priority according to the route emergency score; The calculating the route urgency score of each express delivery comprises the following steps: extracting a package time stamp and an aging promise of the express from the express bill information which is successfully analyzed, and calculating a promise expiration time point; Calculating the difference value between the promised expiration time point and the package timestamp to be recorded as promised time length, wherein the time length from the package timestamp to the current time point is consumed time length, and calculating the ratio of the consumed time length to the promised time length to be recorded as a routing urgency score; the judging the express priority according to the route urgency score comprises the following steps: Sorting all the current successfully parsed express items according to the routing urgency scores from high to low, dividing the sorted express item sequence into a plurality of urgency intervals, wherein each urgency interval corresponds to one urgency level; Clustering the express to the same destination into a plurality of destination subgroups according to the destination information of the express in the same urgency level; Sequencing the route urgency scores in each destination subgroup, and processing the route urgency scores according to the level sequence among different urgency levels; Determining candidate sorting openings capable of processing the destination according to the information of the express destination, and calculating a real-time sorting efficiency value according to each candidate sorting opening and combining the express route emergency score, the delivery time reaching the sorting opening and the queue length of the sorting opening; According to the order of the express priority, screening target sorting ports according to the real-time sorting efficiency values of the candidate sorting ports; The calculating the real-time sorting efficiency value includes: Calculating the conveying time reaching each candidate sorting opening based on the path distance between each candidate sorting opening and the position of the conveyer belt where the express delivery is currently located and the running speed of the conveyer belt; the number of express items waiting to be processed at each candidate sorting opening is obtained in real time, as a queue length for each candidate sort port; Obtaining the time consumption of single piece processing of each candidate sorting opening, and obtaining the queue waiting time of the candidate sorting opening according to the queue length of the corresponding candidate sorting opening; calculating the sum of the conveying time and the queue waiting time to obtain the processing time of each candidate sorting opening; Mapping the processing time by using an exponential decay function to obtain an efficiency coefficient; multiplying the route urgency score by the efficiency coefficient to obtain a real-time sorting efficiency value of each candidate sorting opening; according to the queue state on the conveyor belt section corresponding to the real-time monitoring target sorting point, the speed of the conveyor belt section is adjusted, tasks are distributed to the idle manipulator according to the express routing emergency score, and the conveyor belt speed adjustment and the manipulator task distribution are coordinated.
2. 2. The intelligent control method of the express sorting system according to claim 1, wherein the analyzing the express bill information, and the performing centralized processing on the exception handling port specified by the unresolveable express distribution comprises: acquiring a face sheet image of an express to be sorted for optical character recognition, and extracting text information; If the text information has the defect of route data elements or is unrecognizable due to the defect of image quality, judging that the express is an unresolved express; Selecting the abnormal processing port with the least assigned express count as a candidate abnormal processing port, and selecting one of the candidate abnormal processing ports according to the number sequence if a plurality of candidate abnormal processing ports with the same number exist; distributing the unresolved express to the candidate exception handling port, and updating the express count distributed by the candidate exception handling port; periodically comparing the distributed express counts of the abnormal processing ports, and redefining the distribution sequence according to the sequence from small to large; the driving sorting mechanism transfers the unresolved express to the target exception handling port allocated by the driving sorting mechanism.
3. 3. The intelligent control method of an express sorting system according to claim 1, wherein the determining candidate sorting mouths capable of processing the destination according to the express destination information comprises: Acquiring a current processable destination code set of each sorting port in real time; extracting a standardized destination code from the express destination information; And matching the standardized destination codes with the destination code sets which can be processed by all the sorting mouths one by one, and determining the sorting mouths successfully matched as candidate sorting mouths of the express.
4. 4. The intelligent control method of the express sorting system according to claim 1, wherein the screening target sorting opening comprises: Sequentially selecting subsequent express delivery according to the urgency level, the destination subgroup and the priority processing sequence of sequencing in the subgroup; acquiring all candidate sorting ports corresponding to the currently selected express and respective real-time sorting efficiency values thereof, and selecting the candidate sorting port with the largest real-time sorting efficiency value as a target sorting port of the current express; If the real-time sorting efficiency values of the plurality of candidate sorting ports are the same and are the maximum, selecting the sorting port with the smallest queue length as the target sorting port, and if the queue lengths are still the same, selecting the sorting port with the smallest number.
5. 5. The intelligent control method of an express sorting system according to claim 1, wherein the adjusting the speed of the conveyor section comprises: monitoring the length of a queue of the express to be processed currently on a conveyor belt section corresponding to a target sorting point, calculating the change rate of the length of the queue along with time, and recording the continuous multiple change rates; If the continuous multiple change rate is positive, the running speed of the conveyor belt section is increased, if the continuous multiple change rate is negative, the running speed of the conveyor belt section is reduced, and if the change rate is zero, the current speed is maintained.
6. 6. The intelligent control method of the express sorting system according to claim 5, wherein assigning tasks to the idle robots according to the express routing urgency score comprises: Express delivery of the determined target sorting opening and entering a preparation area in front of the sorting opening is arranged in a descending order according to the route urgency score of the express delivery, and a dynamic task queue is generated; monitoring the working state of each sorting port manipulator, inquiring all express delivery tasks in a dynamic task queue when the manipulator is identified to be in an idle state, and selecting the express delivery task with the highest route urgency score, wherein all express delivery tasks are positioned in a sorting port preparation area to which the idle manipulator belongs; And distributing the grabbing and delivering instructions of the express to the idle manipulator for execution.
7. 7. The intelligent control method of the express sorting system of claim 6, wherein the coordination of conveyor speed adjustment and robot task allocation comprises: After the speed regulation of the conveyor belt road section is executed and a control instruction is sent out, continuously monitoring until confirmation feedback that the speed of the conveyor belt road section reaches a target value is received; after receiving the confirmation feedback, waiting for a predetermined stability time window according to the mechanical inertia response characteristic of the conveyor belt; after the stabilizing time window is finished, the real-time queue information of the express delivery in the preparation area in front of the target sorting opening is collected again; based on the collected real-time queue information and the express route emergency score, the task queue is synchronously updated, and then the task allocation step for the idle manipulator is executed.

Description

Intelligent control method of express sorting system Technical Field The invention belongs to the technical field of express sorting control, and relates to an intelligent control method of an express sorting system. Background With the development of electronic commerce and logistics industry, the express sorting center is used as a core node of a logistics network, and the processing efficiency of the express sorting center is directly related to the operation efficiency of the whole logistics chain. In the face of increasing traffic and increasingly stringent aging commitments, conventional express sorting systems face serious challenges in terms of intelligent and dynamic scheduling. At present, the intelligent control technical scheme of the conventional express sorting system has the following defects that firstly, the prior art is mainly based on first-come first-serve or fixed rules for scheduling, and processing scheduling cannot be performed according to the emergency degree of the package, however, the express faces continuously-changed flow pressure and diversified aging requirements in actual operation, the static scheduling rules cannot respond to the emergency requirements of the urgent package in real time, so that the processing of the urgent package is delayed, and the delivery aging cannot be guaranteed. Secondly, in the prior art, when a sorting outlet is selected for packages, only a single optimization dimension, such as fixed path matching or shortest queue, is generally considered, so that the sorting path selection cannot make optimal allocation in a complex scene, and the problem of resource mismatch that local nodes are continuously overloaded and other nodes are idle is easily caused, so that the overall operation efficiency of the system is low. Finally, in the prior art, each control link of the sorting system is generally regarded as an isolated module to operate independently, and a cooperative mechanism and closed loop feedback based on a unified optimization target are lacked, so that actions of each link of the system are not matched easily, and congestion or idle running among links is caused. Disclosure of Invention In view of the above, in order to solve the problems set forth in the background art, the present invention provides an intelligent control method of an express sorting system. The intelligent control method of the express sorting system comprises the following steps of S1, analyzing express bill information, and carrying out centralized processing on an abnormal processing port appointed by unresolveable express distribution. S2, for the express which is successfully analyzed, acquiring express timeliness commitment, calculating route urgency scores of the express, and judging express priority according to the route urgency scores. S3, determining candidate sorting openings capable of processing the destination according to the information of the express destination, and calculating a real-time sorting efficiency value according to each candidate sorting opening and combining the express route emergency score, the conveying time reaching the sorting opening and the queue length of the sorting opening. S4, screening target sorting openings according to the real-time sorting efficiency values of the candidate sorting openings according to the order of the express priority. S5, adjusting the speed of the conveyor belt section according to the queue state on the conveyor belt section corresponding to the real-time monitoring target sorting point, distributing tasks for the idle manipulator according to the express routing emergency score, and coordinating the speed adjustment of the conveyor belt and the task distribution of the manipulator. Compared with the prior art, the method has the beneficial effects that (1) the method calculates the route urgency score of each express by analyzing the express bill information and extracting the aging promise, and divides the urgency level and the destination subgroup, so that the express priority is obtained, the problem that the existing static rule cannot identify and respond to the urgent need of the urgent parcel is solved, the parcel with high aging promise is ensured to be processed preferentially, and the delivering of the parcel is ensured to be aged. (2) According to the invention, the real-time sorting efficiency value of each sorting port is calculated through the route urgency score of the express delivery, the delivery time reaching the candidate sorting port and the real-time queue length of the sorting port, and the optimal target sorting port is screened, so that the limitation of only relying on single-dimension decision is overcome, the globally optimized resource allocation can be realized in a dynamic environment, the load of each sorting port is effectively balanced, the local congestion and the resource idling are avoided, and the overall processing efficiency is maximally improved. (3) According t