CN-122018463-A - Intelligent control system and method for dynamic arrangement and parameter issuing of process queues based on Internet of things

CN122018463ACN 122018463 ACN122018463 ACN 122018463ACN-122018463-A

Abstract

The invention discloses an intelligent control system and method for dynamic arrangement and automatic parameter issuing of a process queue based on the Internet of things, and belongs to the technical field of flexible manufacturing. The system comprises a production line control unit, an Internet of things unit, an intelligent control unit, a manufacturing execution system unit and an equipment control unit. The intelligent control unit dynamically builds and maintains a virtual process queue synchronous with the physical production line in real time based on the information, and acquires corresponding assembly parameters from the manufacturing execution system unit according to the intelligent judgment time and sends the assembly parameters to the equipment control unit for execution. The invention realizes the accurate issuing of the production parameter of zero waiting, effectively solves the problems of the traditional RFID system such as isolated information, poor adaptability, single-point identification dependence and the like, remarkably improves the production beat, flexibility and system robustness, and provides a data basis for the intelligent collaborative optimization of the whole line.

Inventors

Mao le
LI CONGCONG
ZHANG XUNBING
FANG RONGCHAO
HE BING
YUAN JIFENG
JIA YAZHOU

Assignees

徐州徐工挖掘机械有限公司

Dates

Publication Date: 20260512
Application Date: 20260203

Claims (8)

1. The intelligent control system for dynamically arranging and issuing the parameters of the process queues based on the Internet of things is characterized by comprising a production line control unit, an Internet of things unit, an intelligent control unit, a manufacturing execution system unit and an equipment control unit; The production line control unit is used for transferring the workpieces to be assembled on a physical production line and can be divided into two types according to the control and displacement characteristics of the workpieces, and comprises an asynchronous displacement line body which independently operates to displace the workpieces to be assembled in a discrete mode and a synchronous displacement line body which uniformly operates to displace the workpieces to be assembled in a continuous synchronous mode; The Internet of things unit is in communication connection with the production line control unit and is used for collecting global line information of a hybrid production line formed by the asynchronous shift line body and the synchronous shift line body in real time; The manufacturing execution system unit is used for configuring corresponding assembly parameters for the workpiece to be assembled and storing the assembly parameters; The intelligent control unit is in communication connection with the Internet of things unit and the manufacturing execution system unit, and is used for receiving the global line information, dynamically constructing and maintaining a virtual process queue which is synchronous with the real-time flow of the physical production line based on the global line information, acquiring assembly parameters corresponding to the workpiece to be assembled from the manufacturing execution system unit according to the real-time state of the virtual process queue, and actively issuing the assembly parameters to the equipment control unit; the equipment control unit is in communication connection with the intelligent control unit and is used for receiving and executing the assembly parameters.
2. The intelligent control system for dynamic arrangement and parameter issuing of process queues based on the Internet of things, which is disclosed in claim 1, is characterized in that the asynchronous displacement line body comprises one or more of a friction line, a rail guided vehicle and an automatic guided transport vehicle, and the synchronous displacement line body is a plate chain line.
3. The intelligent control system for dynamically arranging and issuing parameters based on the process queues of the Internet of things according to claim 1, wherein the global line information is a data set which is acquired by an Internet of things unit and reflects the overall dynamic running state of the hybrid production line.
4. The intelligent control system for dynamically arranging and issuing parameters of process queues based on the Internet of things according to claim 1, wherein the intelligent control unit comprises a communication interface module, a queue management module, a parameter management module and an issuing time sequence control module; The communication interface module is used for carrying out data interaction with the Internet of things unit, the manufacturing execution system unit and the equipment control unit; The queue management module is connected with the communication interface module and is used for constructing and dynamically updating a virtual process queue which is synchronous with a physical production line in real time according to a predefined queue management model based on the received global line information; the parameter management module is connected with the communication interface module and is used for acquiring and managing assembly parameters of the workpiece to be assembled at each station from the manufacturing execution system unit; And the issuing time sequence control module is connected with the queue management module and the parameter management module and is used for judging the issuing time of the assembly parameters based on the real-time position information of the workpieces to be assembled in the virtual process queue and triggering the instruction which is extracted from the parameter management module and issued to the equipment control unit through the communication interface module.
5. The intelligent control system for dynamically arranging and issuing parameters of process queues based on the internet of things according to claim 4, wherein the predefined queue management model construction method is specifically as follows: For asynchronous shift line body, set up Coding the material of the ith station in the virtual procedure queue at the time t, For the material code of work piece to be assembled of coming online, then first station satisfies: ; The total number of stations of the asynchronous shift line body is set as The line signal of the kth station at the t moment of the asynchronous shift line body is ,k∈[2, When ] When=1, a queue update is performed: Juxtaposing with ; For synchronous shift line body, set Coding the material of the j-th station in the virtual process queue at the time t, For the material code of work piece to be assembled of coming online, then first station satisfies: ; Set the total number of stations of the synchronous shift line body as The line signal is B (t) at the time of the synchronous shift line t, then when B (t) =1, for all j e 2, Station execution queue update: Juxtaposing with 。
6. The intelligent control system for dynamic arrangement and parameter issuing of process queues based on the Internet of things according to claim 4 or 5, wherein the issuing time sequence control module is configured to trigger issuing of the corresponding assembly parameters of the workpieces to be assembled when the virtual process queues indicate that the workpieces to be assembled enter the target station and are in place in real time.
7. A method for dynamically arranging and issuing an intelligent control system based on process queues based on the internet of things according to any one of claims 1-6, which is characterized by comprising the following steps: step S1, loading a material code of a workpiece to be assembled, which is on line, to a first station of a virtual process queue in response to an event that the workpiece to be assembled is on line; s2, acquiring global line information of a production line control unit in real time through an Internet of things unit; step S3, based on the global line information, dynamically refreshing the material coding states of all stations in the virtual process queue to form a full line process information queue synchronous with the physical flow; Step S4, when judging that the workpiece to be assembled enters the target station according to the full line process information queue, triggering and extracting assembly parameters corresponding to the workpiece to be assembled; step S5, the extracted assembly parameters are issued to the equipment control unit, and the equipment control unit is driven to execute zero-waiting operation; and S6, repeatedly executing the steps S2 to S5 to form a closed-loop control flow based on the feedback of the global line information and the full line process information queue.
8. The method according to claim 7, wherein the step S3 of dynamically refreshing the virtual process queue specifically includes: For stations on the asynchronous shift line body, the line signals of the asynchronous shift line body are independently generated according to each station The material codes are recursively updated forward station by station; and for the stations on the synchronous shift line body, synchronously updating the material codes of all stations of the whole line according to the synchronous shift line body line signal B (t).

Description

Intelligent control system and method for dynamic arrangement and parameter issuing of process queues based on Internet of things Technical Field The invention relates to an intelligent control system and method for dynamic arrangement and parameter issuing of a process queue based on the Internet of things, and belongs to the technical field of flexible manufacturing. Background At present, the assembly process of the excavator has the characteristic of mixed line production of various small-batch products, and the assembly parameters required by each station are different according to the types of vehicles. In the mixed line production mode, after operators need to confirm the vehicle type information, parameters are manually selected on a station control system to trigger corresponding execution programs. The method reduces the overall production efficiency, is extremely easy to cause product quality problems and even equipment faults due to operator errors, and cannot realize unmanned operation in the true sense; In the prior art, an RFID label is placed on a material or a tooling pallet, an RFID reader is deployed at a key station, and when a tooling carrying the material enters the identification range of the station RFID reader, identity information in the label read by the reader is automatically issued to production equipment through a group control system, and the production equipment performs automatic processing program calling and production according to information such as model and the like; The RFID system cannot sense the dynamic flow information of the whole production line, and has no predictability on the sequence of the working procedure to be entered into the station. When dynamic changes such as production order insertion, short equipment faults or inter-process cache occur, the system cannot be actively adjusted, and the adaptability is poor; The successful identification of the RFID reader at the fixed point determines the operation of the entire automated process. Once identification fails due to radio frequency interference, label damage or reader-writer fault, the automatic flow of the station is interrupted, and the system robustness is poor; station information of the RFID systems are mutually independent, prospective production sequence information cannot be provided for downstream processes, and the possibility of whole-line collaborative optimization (such as precise material distribution and the like) is limited. Disclosure of Invention The invention aims to provide an intelligent control system and method for dynamically arranging and issuing parameters of a process queue based on the Internet of things, which are used for dynamically arranging the process queue in real time by collecting global line information on a production line, so that the zero-waiting accurate issuing and execution of parameters required by stations are realized, and the production beat, flexibility and quality reliability are remarkably improved. In order to achieve the above purpose/solve the above technical problems, the present invention is realized by adopting the following technical scheme. On one hand, the invention provides an intelligent control system for dynamically arranging process queues and issuing parameters based on the Internet of things, which comprises a production line control unit, an Internet of things unit, an intelligent control unit, a manufacturing execution system unit and an equipment control unit; The production line control unit is used for transferring the workpieces to be assembled on a physical production line and can be divided into two types according to the control and displacement characteristics of the workpieces, and comprises an asynchronous displacement line body which independently operates to displace the workpieces to be assembled in a discrete mode and a synchronous displacement line body which uniformly operates to displace the workpieces to be assembled in a continuous synchronous mode; The Internet of things unit is in communication connection with the production line control unit and is used for collecting global line information of a hybrid production line formed by the asynchronous shift line body and the synchronous shift line body in real time; The manufacturing execution system unit is used for configuring corresponding assembly parameters for the workpiece to be assembled and storing the assembly parameters; The intelligent control unit is in communication connection with the Internet of things unit and the manufacturing execution system unit, and is used for receiving the global line information, dynamically constructing and maintaining a virtual process queue which is synchronous with the real-time flow of the physical production line based on the global line information, acquiring assembly parameters corresponding to the workpiece to be assembled from the manufacturing execution system unit according to the real-time state of the virtual pro