CN115775009A - Flexible production line group control system and method based on RFID - Google Patents

Flexible production line group control system and method based on RFID Download PDF

Info

Publication number
CN115775009A
CN115775009A CN202211439734.0A CN202211439734A CN115775009A CN 115775009 A CN115775009 A CN 115775009A CN 202211439734 A CN202211439734 A CN 202211439734A CN 115775009 A CN115775009 A CN 115775009A
Authority
CN
China
Prior art keywords
workpiece
production
processing
production line
rfid
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202211439734.0A
Other languages
Chinese (zh)
Inventor
陈建勋
田亚丽
李�一
王吉昌
张宇
夏秋成
胡作伟
李闻
丁维齐
朱强
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jiangsu Jierui Information Technology Co ltd
716th Research Institute of CSIC
Jiangsu Jari Technology Group Co Ltd
CSIC Information Technology Co Ltd
Original Assignee
Jiangsu Jierui Information Technology Co ltd
716th Research Institute of CSIC
Jiangsu Jari Technology Group Co Ltd
CSIC Information Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Jiangsu Jierui Information Technology Co ltd, 716th Research Institute of CSIC, Jiangsu Jari Technology Group Co Ltd, CSIC Information Technology Co Ltd filed Critical Jiangsu Jierui Information Technology Co ltd
Priority to CN202211439734.0A priority Critical patent/CN115775009A/en
Publication of CN115775009A publication Critical patent/CN115775009A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
    • Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]

Abstract

The invention discloses a flexible production line group control system and a method based on RFID, wherein a group control unit is respectively connected with a production line control PLC unit and an MES unit, receives production task information of the MES unit and production line equipment information of the production line control PLC unit, and carries out production scheduling based on the production information and the production line equipment information; and the group control unit reads and writes the RFID label information of the materials on each production line based on the production scheduling scheme and the RFID unit, and simultaneously records the processing information of equipment of each production line to finish the group control of the production lines. According to the invention, through the cooperation of the group control unit and the RFID, the model, the order number and other accessory information of each workpiece can be accurately recorded and accurately and automatically transmitted to the production equipment, the production equipment carries out automatic processing program calling and production according to the model and other information, the MES unit and the production line are linked to control the PLC unit, the flexibility, the digitization and the intellectualization of the production line are improved, and cost reduction and efficiency improvement in the production process of enterprises are effectively realized.

Description

Flexible production line group control system and method based on RFID
Technical Field
The invention belongs to the field of intelligent production control, and particularly relates to a flexible production line group control system and method based on RFID.
Background
The flexible assembly production line is formed by combining customized automation equipment, a workbench and a material transmission line, and is provided with a unified information control system and a material storage and transportation system, so that the system can finish autonomous identification, autonomous control and autonomous detection, and flexible autonomous production is realized.
Aiming at production operation modes of various types, small batches and variable states, due to the fact that resources such as workpieces, trays, materials and personnel are various in form and have the characteristics of severe environment, scattered positions, easiness in flowing and the like, resource management in industrial production is a troublesome matter, and when quality problems occur in produced products, information tracing is difficult often, and a large amount of time and resources are wasted
The traditional production line control system is limited in compatibility with the number of devices, poor in device scheduling flexibility and low in safety, is not suitable for mixed line production of various small-batch products, cannot accurately count production cost, and cannot realize scientific management on workshop production devices.
Disclosure of Invention
In view of the above problems, an object of the present invention is to provide a flexible production line group control system and method based on RFID, which can acquire data of multiple source links such as material, product in process, execution equipment, and tooling in real time through an RFID electronic tag and an RFID reader/writer, thereby improving production efficiency and reducing production line downtime.
Placing the RFID label on material or frock tray, recording the relevant information such as size, quantity, time, personnel of product, replacing traditional manual record, production management personnel can in time master the production situation and adjust the production arrangement according to the condition, control the flow direction of material at any time, and then promote production line flexibility, digitization, intellectuality, effectively realize the enterprise in the production process cost reduction increase.
The specific technical scheme for realizing the purpose of the invention is as follows:
a flexible production line group control system based on RFID comprises a group control unit, a production line control PLC unit, an MES unit and an RFID unit;
the group control unit is respectively connected with the production line control PLC unit and the MES unit, receives production task information of the MES unit and production line equipment information of the production line control PLC unit, and carries out production scheduling based on the production information and the production line equipment information;
and the group control unit reads and writes the RFID label information of the materials on each production line based on the production scheduling scheme and the RFID unit, and simultaneously records the processing information of equipment of each production line to finish the group control of the production lines.
Furthermore, the group control unit comprises a master control module, a data management module, a data interface module, a scheduling module and a monitoring module;
the master control module is used for controlling the rest modules in the group control unit;
the data management module collects quality data of the product production process in real time through the RFID unit, transmits the quality data to each process as a finished inspection criterion, and finally stores the collected data in a database;
the data interface module completes data interaction between the MES unit and the production line control PLC unit as well as between the RFID unit and the group control unit through a data interface;
the scheduling module is used for scheduling production line materials based on the production information of the MES unit;
the monitoring module finishes monitoring of the processing state of the production line material by reading the information of the RFID unit.
Further, the RFID unit comprises an RFID electronic tag and an RFID reader-writer;
the RFID reader-writer is connected with the group control unit and is controlled by the group control unit to finish the query and read-write of data information in the RFID electronic tag;
the RFID electronic tags are arranged on material or tooling trays of various production lines.
Further, the scheduling module generates a scheduling scheme based on the scheduling model by combining the production task information issued by the MES unit and the set production scheduling principle, and specifically includes:
the production scheduling principle is as follows: cost-based or delivery date-based;
the scheduling model is as follows:
assuming that n workpieces to be machined are machined on m devices, each workpiece has p machining processes with process constraints, the workpiece set is expressed as { W } 1 ，W 2 ,…W n Denoted as { M } for the device set 1 ,M 2 ,…M m Denotes a set of steps { Q } 1 ,Q 2 ,…Q p And then:
Figure BDA0003948143420000021
Figure BDA0003948143420000022
Figure BDA0003948143420000023
g(x)＝min(max|t fi -T i |)
wherein a and b are weighting factors, a + b =1, a is more than or equal to 0, b is more than or equal to 0, f (x) is the minimum maximum completion time of all parts of any production order, and h (x) is the sum of the energy consumption cost of all parts of the same order with f (x) from the beginning to the end of processing;
Figure BDA0003948143420000031
represents the step P ij In the processing equipment M k The time for starting the machining in the above step,
Figure BDA0003948143420000032
represents the step P ij In the processing equipment M k Total processing time of (1), P ij Denotes the jth process of the ith work, M k Represents the kth processing equipment;
Figure BDA0003948143420000033
as a device M k The processing energy consumption cost of the jth procedure for processing the ith workpiece,
Figure BDA0003948143420000034
for selecting a processing apparatus M k Carrying out the step P ij Processing, EC k Indicating the processing machine M k Non-process energy consumption cost; t is t fi For the finishing time of the workpiece i, T i Is the delivery date of a workpiece i, wherein i is more than or equal to 1 and less than or equal to n, j is more than or equal to 1 and less than or equal to p, and k is more than or equal to 1 and less than or equal to m.
Further, the constraint conditions of the scheduling model are as follows:
(1) The same workpiece needs to be processed according to the established process sequence, and different workpieces can be processed in parallel without being restricted by the process;
t sij ≤t si(j+1)
wherein, t sij The starting time of the jth process for the ith workpiece, t si(j+1) The machining starting time of the j +1 procedure of the ith machined workpiece is set;
(2) At any moment, each processing device can only process a certain procedure, and each workpiece to be processed can only be processed on one processing device at any moment;
Figure BDA0003948143420000035
Figure BDA0003948143420000036
indicating that at least one machine can process step P ij ；
Figure BDA0003948143420000037
Wherein the content of the first and second substances,
Figure BDA0003948143420000038
for processing apparatus M k The starting time of the j-th process for the ith workpiece is up,
Figure BDA0003948143420000039
for the processing apparatus M k The processing time of the jth procedure of the ith processing workpiece is finished,
Figure BDA00039481434200000310
for the processing apparatus M k The machining starting time of the j +1 th procedure of the ith machined workpiece is up to;
(3) The product of the temporary slip is processed in a certain process with priority, the delivery date earliest priority of the temporary slip is set as level 1, and the delivery date latest priority of the temporary slip is set as level 1Set to n levels when a device M is to be present k Upper processed workpiece W a Meets the temporary insertion of a single workpiece W i While the workpiece W is in contact with i At device M k Step P of (2) ij End time ratio of workpiece W a At device M k Step P of (2) ab The start time of (c) is earlier, namely:
Figure BDA00039481434200000311
the group control method based on the system comprises the following steps:
step 1, after the system is started, the group control unit reads configuration information of RFID units in the system and determines the states of all production lines and the states of all processing devices;
step 2, the group control unit generates a scheduling scheme based on a production scheduling principle and a scheduling model according to production task information issued by the MES unit, and sends the scheduling scheme to each production line workstation based on a production line control PLC unit to complete the scheduling of production materials;
step 3, monitoring the materials on each production line by the group control unit based on the scheduling scheme and the RFID unit, and executing reading and writing of RFID label information when judging that the workpiece arrives at each processing device on the production line;
step 4, after the information reading and writing of the RFID label are finished and the processing step is finished, judging whether the RFID label exists, if so, judging that the workpiece passes a point, reading label data by a group control system, if not, performing log recording, and automatically assigning codes to generate a new label;
and 5, after the workpieces complete each processing step, the group control system determines the time and energy consumption of the workpieces at each processing equipment based on the RFID label information of the workpieces, records and uploads the passing point records of the workpieces at each processing equipment, and the control and monitoring of the whole processing process of the workpieces of each production line are completed.
Compared with the prior art, the invention has the beneficial effects that:
(1) The technical scheme of the invention can realize real-time positioning, real-time tracking and flow control of workpieces/trays of a flexible production line, realize mixed production of various models of the production line, flexible production, management of workpieces of various models, detection of objects in the product processing process, dynamic tracking of the objects, prediction of the positions of the objects, and automatic production process recording, replace the traditional manual recording, grasp the production conditions in time, adjust the production arrangement according to the conditions, control the flow direction of materials at any time, carry out centralized control and management on production resources of the production line, collect equipment and product operation parameters in real time, carry out quality analysis and monitoring on the materials and finished products, give an alarm in time when the production is abnormal, reduce the shutdown rate of the production line, finally achieve high-efficiency operation of the production line, reliably trace back quality information, and effectively realize cost reduction and efficiency improvement in the production process of enterprises;
(2) According to the technical scheme, through the cooperation of the group control unit and the RFID, the model number, the order number and other accessory information of each workpiece can be accurately recorded and accurately and automatically transmitted to the production equipment, the production equipment carries out automatic processing program calling and production according to the model number and other information, the MES unit is connected with the production line control PLC unit, the production plan queue is automatically read from the MES unit, the unique code of the workpiece is completely and inerrably written into the wireless radio frequency tag according to the queue, and the read-write accuracy of the wireless radio frequency tag is higher than 99.9%.
Drawings
Fig. 1 is a schematic diagram of an architecture of a flexible production line group control system based on RFID according to the present invention.
Fig. 2 is a flow chart of steps of a flexible RFID-based production line cluster control method according to the present invention.
Fig. 3 is a schematic diagram of an interface of a group control unit according to an embodiment of the present invention.
FIG. 4 is a schematic diagram of an interaction interface between the group control unit and the MES unit according to the embodiment of the present invention.
Fig. 5 is a schematic diagram of an interactive interface between the group control unit and the production line control PLC unit in the embodiment of the present invention.
Fig. 6 is an RFID unit information management interface in an embodiment of the present invention.
Detailed Description
A flexible production line group control system based on RFID comprises a group control unit, a production line control PLC unit, an MES unit and an RFID unit;
the group control unit is respectively connected with the production line control PLC unit and the MES unit, receives production task information of the MES unit and production line equipment information of the production line control PLC unit, and carries out production scheduling based on the production information and the production line equipment information;
more specifically, the group control unit creates a task list according to production task information issued by the MES unit and synchronizes the task list information, including information such as task list codes, production plan codes, unique identification codes of workpieces/trays, time for creating the task list and the like;
and the group control unit reads and writes the RFID label information of the materials on each production line based on the production scheduling scheme and the RFID unit, and simultaneously records the processing information of equipment of each production line to finish the group control of the production lines.
Furthermore, the group control unit comprises a master control module, a data management module, a data interface module, a scheduling module and a monitoring module;
the master control module is used for controlling the rest modules in the group control unit;
the data management module collects quality data of the product production process in real time through the RFID unit, transmits the quality data to each process as a finished inspection criterion, and finally stores the collected data in a database;
the data interface module completes data interaction between the MES unit and the production line control PLC unit as well as between the RFID unit and the group control unit through a data interface;
the scheduling module is used for scheduling production line materials based on the production information of the MES unit;
and the monitoring module finishes monitoring the processing state of the production line material by reading the information of the RFID unit.
Further, the RFID unit comprises an RFID electronic tag and an RFID reader-writer;
the RFID reader-writer is connected with the group control unit and is controlled by the group control unit to finish the query and read-write of data information in the RFID electronic tag;
the RFID electronic tags are arranged on material or tooling trays of various production lines.
Further, the scheduling module generates a scheduling scheme based on the scheduling model by combining the production task information issued by the MES unit and the set production scheduling principle, and specifically includes:
the production scheduling principle is as follows: priority based on cost or priority based on delivery date;
the scheduling model is as follows:
assuming that n workpieces to be machined are machined on m devices, each workpiece has p machining processes with process constraints, the workpiece set is expressed as { W } 1 ，W 2 ，…W n Denoted as { M } for the device set 1 ，M 2 ，…M m Denotes a set of steps { Q } 1 ，Q 2 ，…Q p And for multi-objective optimization problems of different units, a normalization processing method is adopted to ensure the scientificity of the method, and then:
Figure BDA0003948143420000061
Figure BDA0003948143420000062
Figure BDA0003948143420000063
g(x)＝min(max|t fi -T i |)
wherein, a model is constructed by using a principle of taking cost as priority, and a normalized objective function after weighting processing is used as minC max = f (x) × a + h (x) × b, a, b are weighting factors, a + b =1, a ≧ 0, b ≧ 0, f (x) are the minimum maximum completion times for all parts of any production order, h (x) is the sum of the energy costs of the equipment used from the beginning to the end of the processing for all parts of the same order as f (x);
Figure BDA0003948143420000064
represents the step P ij In the processing equipment M k The time required for the start of the machining,
Figure BDA0003948143420000065
represents the step P ij In the processing equipment M k Total processing time of (1), P ij Denotes the jth process of the ith work, M k Denotes a k-th processing apparatus;
Figure BDA0003948143420000066
as a device M k The processing energy consumption cost of the jth procedure for processing the ith workpiece,
Figure BDA0003948143420000067
for selecting a processing apparatus M k Carrying out the step P ij Processing, EC k Indicating a processing machine M k Non-process energy consumption cost of; t is t fi For the finishing time of the workpiece i, T i Is the delivery date of a workpiece i, wherein i is more than or equal to 1 and less than or equal to n, j is more than or equal to 1 and less than or equal to p, and k is more than or equal to 1 and less than or equal to m.
Further, the constraint conditions of the scheduling model are as follows:
(1) The same workpiece needs to be processed according to the established process sequence, and different workpieces can be processed in parallel without being restricted by the process;
t sij ≤t si(j+1)
wherein, t sij The starting time of the jth process for the ith workpiece, t si(j+1) The machining starting time of the (j + 1) th procedure of the ith machined workpiece is set;
(2) At any moment, each processing device can only process a certain procedure, and each workpiece being processed can only be processed on one processing device at any moment;
Figure BDA0003948143420000071
Figure BDA0003948143420000072
indicating that at least one machine can process step P ij ；
Figure BDA0003948143420000073
Wherein the content of the first and second substances,
Figure BDA0003948143420000074
for the processing apparatus M k The starting time of the j-th process for the ith workpiece is up,
Figure BDA0003948143420000075
for processing apparatus M k The processing time of the jth procedure for finishing the ith processing workpiece is up,
Figure BDA0003948143420000076
for processing apparatus M k The machining starting time of the (j + 1) th procedure of the ith machined workpiece is up to;
(3) The product of the temporary slip is processed in a process with priority, the delivery date of the temporary slip is set to 1 grade at the earliest and n grades at the latest, when the product is to be processed in the equipment M k Upper processed workpiece W a Meets the temporary insertion of a single workpiece W i While the workpiece W is in contact with i At device M k Step P of (2) ij End time ratio of workpiece W a At device M k Step P of (2) ab The start time of (c) is earlier, that is, the following are satisfied:
Figure BDA0003948143420000077
the group control method based on the system comprises the following steps:
step 1, after the system is started, the group control unit reads configuration information of RFID units in the system and determines the states of all production lines and the states of all processing devices;
step 2, the group control unit generates a scheduling scheme based on a production scheduling principle and a scheduling model according to production task information issued by the MES unit, and sends the scheduling scheme to each production line workstation based on a production line control PLC unit to complete the scheduling of production materials, which specifically comprises the following steps:
more specifically, the group control unit creates a task list according to the production task information issued by the MES unit and synchronizes the task list information, including the information of task list code, production plan code, unique identification code of workpiece/tray, time for creating task list, etc
The production scheduling principle is as follows: priority based on cost or priority based on delivery date;
the scheduling model is as follows:
assuming that n workpieces to be machined are machined on m devices, each workpiece has p machining processes with process constraints, the workpiece set is expressed as { W } 1 ，W 2 ，…W n Denoted as { M } for the set of devices 1 ，M 2 ，…M m The process set is denoted as { Q } 1 ，Q 2 ，…Q p And for multi-objective optimization problems of different units, a normalization processing method is adopted to ensure the scientificity of the method, and then:
Figure BDA0003948143420000081
Figure BDA0003948143420000082
Figure BDA0003948143420000083
g(x)＝min(max|t fi -T i |)
wherein, a model is constructed by using a principle of taking cost as priority, and a normalized objective function after weighting processing is used as minC max = f (x) × a + h (x) × b, a, b areThe weighting factors are that a + b =1, a is more than or equal to 0, b is more than or equal to 0, f (x) is the minimum maximum completion time of all parts of any production order, and h (x) is the sum of the energy consumption cost of the equipment used by all parts of the same order with f (x) from the beginning to the end of processing;
Figure BDA0003948143420000084
represents the step P ij In the processing equipment M k The time required for the start of the machining,
Figure BDA0003948143420000085
shows the process P ij In the processing equipment M k Total processing time of (1), P ij Denotes the jth process, M, of the ith work k Represents the kth processing equipment;
Figure BDA0003948143420000086
as a device M k The processing energy consumption cost of the jth procedure for processing the ith workpiece,
Figure BDA0003948143420000087
for selecting a processing apparatus M k Carrying out the step P ij Processing, EC k Indicating the processing machine M k Non-process energy consumption cost; t is t fi For the finish time of the workpiece i, T i Is the delivery date of a workpiece i, wherein i is more than or equal to 1 and less than or equal to n, j is more than or equal to 1 and less than or equal to p, and k is more than or equal to 1 and less than or equal to m.
The constraint conditions of the scheduling model are as follows:
(1) The same workpiece needs to be processed according to the established process sequence, and different workpieces can be processed in parallel without being restricted by the process;
t sij ≤t si(j+1)
wherein, t sij The starting time of the j process for the ith workpiece si(j+1) The machining starting time of the j +1 procedure of the ith machined workpiece is set;
(2) At any time, each processing device can only process a certain procedure, and each workpiece which is being processed can only be processed on one processing device at any time;
Figure BDA0003948143420000088
Figure BDA0003948143420000089
indicating that at least one machine can process procedure P ij ；
Figure BDA00039481434200000810
Wherein the content of the first and second substances,
Figure BDA00039481434200000811
for processing apparatus M k The starting time of the j-th process for the ith workpiece is up,
Figure BDA0003948143420000091
for the processing apparatus M k The processing time of the jth procedure of the ith processing workpiece is finished,
Figure BDA0003948143420000092
for processing apparatus M k The machining starting time of the (j + 1) th procedure of the ith machined workpiece is up to;
(3) The product of the temporary slip is processed in a certain process with priority, the delivery date of the temporary slip is set to 1 grade at the earliest priority, the delivery date of the temporary slip is set to n grade at the latest priority, and when the product is about to be processed in the equipment M k Upper machined workpiece W a Meets the temporary inserted single workpiece W i While the workpiece W is being processed i At device M k Step P of (2) ij End time ratio of workpiece W a At device M k Step P of (2) ab The start time of (c) is earlier, namely:
Figure BDA0003948143420000093
step 3, the group control unit monitors the materials on each production line based on the scheduling scheme and the RFID unit, and executes the reading and writing of the RFID label information when judging that the workpiece arrives at each processing device on the production line;
step 4, after the information reading and writing of the RFID label are finished and the processing step is finished, whether the RFID label exists or not is judged, if yes, the workpiece is judged to pass the point, the group control system reads the label data, if not, the log recording is carried out, and the new label is generated by automatic coding;
and 5, after the workpieces complete each processing step, the group control system determines the time and energy consumption of the workpieces at each processing equipment based on the RFID label information of the workpieces, records and uploads the passing point records of the workpieces at each processing equipment, and the control and monitoring of the whole processing process of the workpieces of each production line are completed.
The present invention will be further described with reference to the following examples.
Examples
A flexible production line group control system based on RFID comprises a group control unit, a production line control PLC unit, an MES unit and an RFID unit;
the group control unit is respectively connected with the production line control PLC unit and the MES unit, receives production task information of the MES unit and production line equipment information of the production line control PLC unit, and carries out production scheduling based on the production information and the production line equipment information;
more specifically, the group control unit creates a task list according to production task information issued by the MES unit and synchronizes the task list information, including information such as task list codes, production plan codes, unique identification codes of workpieces/trays, time for creating the task list and the like;
and the group control unit reads and writes the RFID label information of the materials on each production line based on the production scheduling scheme and the RFID unit, and simultaneously records the processing information of equipment of each production line to finish the group control of the production lines.
In this embodiment, the group control unit is applied to a flexible automation production line, and interacts with the MES unit and the production line control PLC unit through a production line switch.
More specifically, the group control system in this embodiment is used in an automatic production line of a numerical control machine tool, is accessed to a control network of the production line, is connected to a server, an industrial personal computer, and a certain number of RFID readers and writers to operate in the same network, all the RFID readers and writers are accessed to a group control unit, each reader and writer controls an ultra-high frequency tag with a distance of about 50cm, at most one RFID ultra-high frequency tag exists in a reading and writing range of each reader and writer, if more than one tag exists, the reader and writer automatically filters out tags with longer distances according to internal query conditions, and the tag with a strong signal is used as an effective tag for recording and writing, as shown in fig. 1;
furthermore, the group control unit comprises a master control module, a data management module, a data interface module, a scheduling module and a monitoring module;
the master control module is used for controlling the rest modules in the group control unit;
the data management module collects quality data of the product production process in real time through the RFID unit, transmits the quality data to each process as a finishing test criterion, and finally stores the collected data in a database;
the data interface module completes data interaction between the MES unit and the production line control PLC unit as well as between the RFID unit and the group control unit through a data interface;
the scheduling module is used for scheduling production line materials based on the production information of the MES unit;
and the monitoring module finishes monitoring the processing state of the production line material by reading the information of the RFID unit.
Further, the RFID unit comprises an RFID electronic tag and an RFID reader-writer;
the RFID reader-writer is connected with the group control unit and is controlled by the group control unit to finish the query and read-write of data information in the RFID electronic tag;
the RFID electronic tags are arranged on material or tooling trays of various production lines.
In the embodiment, the RFID unit is connected to the group control unit, each RFID reader-writer controls an RFID ultrahigh-frequency electronic tag with a distance of 50cm, at most one RFID ultrahigh-frequency tag exists in the reading-writing range of each reader-writer, if more than one tag exists, the reader-writer automatically filters out the tags with longer distances according to the internal query conditions, and the tags with strong signals are used as effective tags for recording and writing;
the RFID tag can be a metal tag, a file management tag or other customized tags, and the RFID reader-writer can be a mobile handheld reader-writer or an access control fixed reader-writer.
Further, the scheduling module generates a scheduling scheme based on the scheduling model by combining the production task information issued by the MES unit and the set production scheduling principle, and specifically includes:
the production scheduling principle is as follows: cost-based or delivery date-based;
the scheduling model is as follows:
assuming that n workpieces to be machined are machined on m pieces of equipment, each workpiece has p machining processes with process constraints, a workpiece set is represented as { W } 1 ，W 2 ，…W n Denoted as { M } for the device set 1 ，M 2 ，…M m The process set is denoted as { Q } 1 ，Q 2 ，…Q p And for multi-objective optimization problems of different units, a normalization processing method is adopted to ensure the scientificity of the method, and then:
Figure BDA0003948143420000111
Figure BDA0003948143420000112
Figure BDA0003948143420000113
g(x)＝min(max|t fi -T i |)
wherein the principle of taking cost as priority is selectedConstructing a model, and applying the normalized target function after weighting treatment as minC max = f (x) × a + h (x) × b, a, b are weighting factors, a + b =1, a ≧ 0, b ≧ 0, f (x) are the minimum maximum completion times for all parts of any production order, h (x) is the sum of the energy costs of the equipment used from the beginning to the end of the processing for all parts of the same order as f (x);
Figure BDA0003948143420000114
represents the step P ij In the processing equipment M k The time for starting the machining in the above step,
Figure BDA0003948143420000115
represents the step P ij Total processing time, P, at the processing machine Mk ij Denotes the jth process, M, of the ith work k Represents the kth processing equipment;
Figure BDA0003948143420000116
as a device M k The processing energy consumption cost of the jth procedure for processing the ith workpiece,
Figure BDA0003948143420000117
for selecting a processing apparatus M k Carrying out the step P ij Processing, EC k Indicating a processing machine M k Non-process energy consumption cost of; t is t fi For the finish time of the workpiece i, T i Is the delivery date of a workpiece i, wherein i is more than or equal to 1 and less than or equal to n, j is more than or equal to 1 and less than or equal to p, and k is more than or equal to 1 and less than or equal to m.
Further, the constraint conditions of the scheduling model are as follows:
(1) The same workpiece needs to be processed according to the established process sequence, and different workpieces can be processed in parallel without being restricted by the process;
t sij ≤t si(j+1)
wherein, t sij The starting time of the j process for the ith workpiece si(j+1) The machining starting time of the (j + 1) th procedure of the ith machined workpiece is set;
(2) At any moment, each processing device can only process a certain procedure, and each workpiece being processed can only be processed on one processing device at any moment;
Figure BDA0003948143420000118
Figure BDA0003948143420000121
indicating that at least one machine can process step P ij ；
Figure BDA0003948143420000122
Wherein the content of the first and second substances,
Figure BDA0003948143420000123
for processing apparatus M k The starting time of the j-th process for the ith workpiece is up,
Figure BDA0003948143420000124
for processing apparatus M k The processing time of the jth procedure of the ith processing workpiece is finished,
Figure BDA0003948143420000125
for processing apparatus M k The machining starting time of the j +1 th procedure of the ith machined workpiece is up to;
(3) The product of the temporary slip is processed in a certain process with priority, the delivery date earliest priority of the temporary slip is set as level 1, the delivery date latest priority of the temporary slip is set as level n, and when the product is about to be processed in the equipment M k Upper processed workpiece W a Meets the temporary insertion of a single workpiece W i While the workpiece W is in contact with i At device M k Step P of (2) ij End time ratio of workpiece W a At device M k Step P of (2) ab The start time of (c) is earlier, namely:
Figure BDA0003948143420000126
in this embodiment, the format of the read command and the response return data between the group control unit and the RFID reader is defined as follows:
the group control system command data block:
len: the length of the command Data block, but not Len itself, i.e., the length of the Data block is equal to 4 plus Data [ ]. The maximum allowed value of Len is 96, the minimum value is 4, and the byte length is 1;
adr: a reader/writer address; address range: 0x 00-0xFE and 0xFF are broadcast addresses, the reader-writer only responds to a command which is the same as the self address and has the address of 0xFF, the address of the reader-writer when leaving a factory is 0x00, and the byte length is 1;
cmd: a command code having a byte length of 1;
data [ ]: a parameter domain, which may not exist in the actual command, and has an indefinite byte length;
LSB-CRC16: CRC16 low byte, CRC16 is a CRC16 value from Len to Data [ ], byte length is 1;
MSB-CRC16: CRC16 high byte, byte length 1;
the reader-writer responds to the data block:
len: responding to the length of the Data block, but not including Len itself, i.e. the length of the Data block is equal to the length of 5 plus Data [ ], the byte length is 1;
adr: reader address, byte length 1;
and (3) recamd: indicating which command the response data block is, if it is a response to an unrecognizable command, then recamd is 0x00 and byte length is 1;
status: a command execution result status value, byte length 1;
data [ ]: a data field, which may not exist and has an indefinite byte length;
LSB-CRC16: CRC16 low byte, CRC16 is a CRC16 value from Len to Data [ ], byte length is 1;
MSB-CRC16: CRC16 high byte, byte length 1;
with reference to fig. 2, the group control method based on the above system includes the following steps:
step 1, after the system is started, the group control unit reads configuration information of RFID units in the system and determines the states of all production lines and the states of all processing devices;
the configuration information comprises basic information such as an IP address, a port, frequency, a marker and the like of the RFID reader-writer;
step 2, the group control unit generates a scheduling scheme based on a production scheduling principle and a scheduling model according to production task information issued by the MES unit, and sends the scheduling scheme to each production line workstation based on a production line control PLC unit to complete the scheduling of production materials, which specifically comprises the following steps:
more specifically, the group control unit creates the task list according to the production task information issued by the MES unit and synchronizes the task list information, including the task list code, the production plan code, the unique identification code of the workpiece/tray, the time for creating the task list and the like
The production scheduling principle is as follows: cost-based or delivery date-based;
the scheduling model is as follows:
assuming that n workpieces to be machined are machined on m pieces of equipment, each workpiece has p machining processes with process constraints, a workpiece set is represented as { W } 1 ，W 2 ,…W n Denoted as { M } for the set of devices 1 ,M 2 ,…M m The process set is denoted as { Q } 1 ,Q 2 ,…Q p And for multi-objective optimization problems of different units, a normalization processing method is adopted to ensure the scientificity of the method, and then:
Figure BDA0003948143420000131
Figure BDA0003948143420000132
Figure BDA0003948143420000133
g(x)＝min(max|t fi -T i |)
wherein, a model is constructed by using a principle of taking cost as priority, and a normalized objective function after weighting processing is used as minC max F (x) × a + h (x) × b, a, b are weighting factors, a + b =1, a ≧ 0, b ≧ 0, f (x) are the minimum maximum completion time of all parts of any production order, h (x) is the sum of the energy consumption costs of the equipment used from the beginning to the end of the process for all parts of the same order as f (x);
Figure BDA0003948143420000141
represents the step P ij In the processing apparatus M k The time for starting the machining in the above step,
Figure BDA0003948143420000142
represents the step P ij In the processing equipment M k Total processing time of (1), P ij Denotes the jth process, M, of the ith work k Represents the kth processing equipment;
Figure BDA0003948143420000143
as a device M k The processing energy consumption cost of the jth procedure for processing the ith workpiece,
Figure BDA0003948143420000144
for selecting a processing apparatus M k Carrying out the step P ij Processing, EC k Indicating the processing machine M k Non-process energy consumption cost of; t is t fi For the finishing time of the workpiece i, T i Is the delivery date of a workpiece i, wherein i is more than or equal to 1 and less than or equal to n, j is more than or equal to 1 and less than or equal to p, and k is more than or equal to 1 and less than or equal to m.
The constraint conditions of the scheduling model are as follows:
(1) The same workpiece needs to be processed according to the established process sequence, and different workpieces can be processed in parallel without being restricted by the process;
t sij ≤t si(j+1)
wherein, t sij The starting time of the j process for the ith workpiece si(j+1) The machining starting time of the j +1 procedure of the ith machined workpiece is set;
(2) At any time, each processing device can only process a certain procedure, and each workpiece which is being processed can only be processed on one processing device at any time;
Figure BDA0003948143420000145
Figure BDA0003948143420000146
indicating that at least one machine can process step P ij ；
Figure BDA0003948143420000147
Wherein the content of the first and second substances,
Figure BDA0003948143420000148
for processing apparatus M k The starting time of the j-th process for the ith workpiece is up,
Figure BDA0003948143420000149
for processing apparatus M k The processing time of the jth procedure of the ith processing workpiece is finished,
Figure BDA00039481434200001410
for processing apparatus M k The machining starting time of the (j + 1) th procedure of the ith machined workpiece is up to;
(3) The product of the temporary slip is processed in a certain process with priority, the delivery date of the temporary slip is set to 1 grade at the earliest priority, the delivery date of the temporary slip is set to n grade at the latest priority, and when the product is about to be processed in the equipment M k Upper processed workpiece W a Encounter temporaryInsert single work piece W i While the workpiece W is in contact with i At device M k Step P of (2) ij End time ratio of workpiece W a At device M k Step P of (2) ab The start time of (c) is earlier, that is, the following are satisfied:
Figure BDA0003948143420000151
step 3, monitoring the materials on each production line by the group control unit based on the scheduling scheme and the RFID unit, and executing reading and writing of RFID label information when judging that the workpiece arrives at each processing device on the production line;
step 4, after the information reading and writing of the RFID label are finished and the processing step is finished, whether the RFID label exists or not is judged, if yes, the workpiece is judged to pass the point, the group control system reads the label data, if not, the log recording is carried out, and the new label is generated by automatic coding;
and 5, after the workpieces complete each processing step, the group control system determines the time consumption and the energy consumption of the workpieces at each processing equipment based on the RFID label information of the workpieces, records and uploads the passing point records of the workpieces at each processing equipment, and the control and the monitoring of the whole processing process of the workpieces of each production line are completed.
The radio frequency group control system is connected with a radio frequency reader-writer through a serial port RS232/RS485 or an Ethernet port RJ45, the reader-writer realizes the operations of reading, writing, inquiring, scanning and the like of the RFID label, and an antenna can be selectively added according to the field condition and the high-frequency or ultrahigh-frequency working efficiency so as to increase the label reading success rate, as shown in FIG. 3;
in this embodiment, an interaction interface between the group control unit and the MES unit is shown in fig. 4, an interaction interface between the group control unit and the production line control PLC unit is shown in fig. 5, and an information management and control interface of the RFID unit is shown in fig. 6.
According to the technical scheme, the model, order number and other accessory information of each workpiece can be accurately recorded through the cooperation of the group control unit and the RFID, and are accurately and automatically transmitted to the production equipment, the production equipment carries out automatic processing program calling and production according to the information such as the model and the like, the MES unit is linked with the production line control PLC unit, the production plan queue is automatically read from the MES unit, the unique code of the workpiece is completely and inerrably written into the wireless radio frequency tag according to the queue, the read-write accuracy of the wireless radio frequency tag is higher than 99.9%, the flexibility, the digitization and the intellectualization of the production line are improved, and cost reduction and efficiency improvement in the production process of enterprises are effectively realized.
The foregoing embodiments illustrate and describe the general principles and principal features of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed.

Claims (8)

1. A flexible production line group control system based on RFID is characterized by comprising a group control unit, a production line control PLC unit, an MES unit and an RFID unit;
the group control unit is respectively connected with the production line control PLC unit and the MES unit, receives production task information of the MES unit and production line equipment information of the production line control PLC unit, and carries out production scheduling based on the production information and the production line equipment information;
and the group control unit reads and writes the RFID label information of the materials on each production line based on the production scheduling scheme and the RFID unit, and simultaneously records the processing information of equipment of each production line to finish the group control of the production lines.
2. The RFID-based flexible production line group control system according to claim 1, wherein the group control unit comprises a master control module, a data management module, a data interface module, a scheduling module and a monitoring module;
the master control module is used for controlling the rest modules in the group control unit;
the data management module collects quality data of the product production process in real time through the RFID unit, transmits the quality data to each process as a finished inspection criterion, and finally stores the collected data in a database;
the data interface module completes data interaction between the MES unit and the production line control PLC unit as well as between the RFID unit and the group control unit through a data interface;
the scheduling module is used for scheduling production line materials based on the production information of the MES unit;
the monitoring module finishes monitoring of the processing state of the production line material by reading the information of the RFID unit.
3. The RFID-based flexible production line group control system according to claim 1, wherein the RFID unit comprises an RFID electronic tag and an RFID reader-writer;
the RFID reader-writer is connected with the group control unit and is controlled by the group control unit to finish the query and read-write of data information in the RFID electronic tag;
the RFID electronic tags are arranged on material or tooling trays of various production lines.
4. The RFID-based flexible production line cluster control system of claim 1, wherein the scheduling module generates a scheduling scheme based on a scheduling model by combining production task information issued by the MES unit and a set production scheduling principle, and specifically comprises:
the production scheduling principle is as follows: cost-based or delivery date-based;
the scheduling model is as follows:
assuming that n workpieces to be machined are machined on m pieces of equipment, each workpiece has p machining processes with process constraints, a workpiece set is represented as { W } 1 ，W 2 ,…W n Denoted as { M } for the device set 1 ,M 2 ,…M m The process set is denoted as { Q } 1 ,Q 2 ,…Q p And then:
Figure FDA0003948143410000021
Figure FDA0003948143410000022
Figure FDA0003948143410000023
g(x)＝min(max|t fi -T i |)
wherein a and b are weighting factors, a + b =1, a is more than or equal to 0, b is more than or equal to 0, f (x) is the minimum maximum completion time of all parts of any production order, and h (x) is the sum of the energy consumption cost of all parts of the same order with f (x) from the beginning to the end of processing;
Figure FDA0003948143410000024
represents the step P ij In the processing apparatus M k The time required for the start of the machining,
Figure FDA0003948143410000025
represents the step P ij In the processing equipment M k Total processing time of (1), P ij Denotes the jth process, M, of the ith work k Denotes a k-th processing apparatus;
Figure FDA0003948143410000026
as a device M k The processing energy consumption cost of the jth procedure for processing the ith workpiece,
Figure FDA0003948143410000027
for selecting a processing apparatus M k Carrying out the step P ij Processing, EC k Indicating a processing machine M k Non-process energy consumption cost of; t is t fi For the finishing time of the workpiece i, T i Is the delivery date of a workpiece i, wherein i is more than or equal to 1 and less than or equal to n, j is more than or equal to 1 and less than or equal to p, and k is more than or equal to 1 and less than or equal to m.
5. The RFID-based flexible production line cluster control system according to claim 4, wherein the constraint conditions of the scheduling model are as follows:
(1) The same workpiece needs to be processed according to the established process sequence, and different workpieces can be processed in parallel without being restricted by the process;
t sij ≤t si(j+1)
wherein, t sij The starting time of the j process for the ith workpiece si(j+1) The machining starting time of the j +1 procedure of the ith machined workpiece is set;
(2) At any time, each processing device can only process a certain procedure, and each processing device can only process a workpiece at any time;
Figure FDA0003948143410000028
Figure FDA0003948143410000029
indicating that at least one machine can process step P ij ；
Figure FDA00039481434100000210
Wherein the content of the first and second substances,
Figure FDA00039481434100000211
for processing apparatus M k The starting time of the j-th process for the ith workpiece is up,
Figure FDA0003948143410000031
for the processing apparatus M k The processing time of the jth procedure of the ith processing workpiece is finished,
Figure FDA0003948143410000032
for processing apparatus M k The machining starting time of the (j + 1) th procedure of the ith machined workpiece is up to;
(3) The product of the temporary slip is processed in a certain process with priority, the delivery date of the temporary slip is set to 1 grade at the earliest priority, the delivery date of the temporary slip is set to n grade at the latest priority, and when the product is about to be processed in the equipment M k Upper processed workpiece W a Meets the temporary insertion of a single workpiece W i While the workpiece W is in contact with i At the device M k Step P of (2) ij End time ratio of workpiece W a At device M k Step P of (2) ab The start time of (c) is earlier, that is, the following are satisfied:
Figure FDA0003948143410000033
6. the RFID-based flexible production line group control method based on any one of the systems of claims 1-5, characterized by comprising the following steps:
step 1, after the system is started, the group control unit reads configuration information of RFID units in the system and determines the states of all production lines and the states of all processing devices;
step 2, the group control unit generates a scheduling scheme based on a production scheduling principle and a scheduling model according to production task information issued by the MES unit, and sends the scheduling scheme to each production line workstation based on a production line control PLC unit to complete the scheduling of production materials;
step 3, the group control unit monitors the materials on each production line based on the scheduling scheme and the RFID unit, and executes the reading and writing of the RFID label information when judging that the workpiece arrives at each processing device on the production line;
step 4, after the information reading and writing of the RFID label are finished and the processing step is finished, judging whether the RFID label exists, if so, judging that the workpiece passes a point, reading label data by a group control system, if not, performing log recording, and automatically assigning codes to generate a new label;
and 5, after the workpieces complete each processing step, the group control system determines the time consumption and the energy consumption of the workpieces at each processing equipment based on the RFID label information of the workpieces, records and uploads the passing point records of the workpieces at each processing equipment, and the control and the monitoring of the whole processing process of the workpieces of each production line are completed.
7. The RFID-based flexible production line group control method according to claim 6, wherein the step 2 of generating a scheduling scheme based on a production scheduling principle and a scheduling model specifically comprises:
the production scheduling principle is as follows: cost-based or delivery date-based;
the scheduling model is as follows:
assuming that n workpieces to be machined are machined on m pieces of equipment, each workpiece has p machining processes with process constraints, a workpiece set is represented as { W } 1 ，W 2 ,…W n Denoted as { M } for the device set 1 ,M 2 ,…M m Denotes a set of steps { Q } 1 ,Q 2 ,…Q p And then:
Figure FDA0003948143410000041
Figure FDA0003948143410000042
Figure FDA0003948143410000043
g(x)＝min(max|t fi -T i |)
wherein a and b are weighting factors, a + b =1, a is more than or equal to 0, b is more than or equal to 0, f (x) is the minimum maximum completion time of all parts of any production order, and h (x) is the sum of the energy consumption cost of all parts of the same order with f (x) from the beginning to the end of processing;
Figure FDA0003948143410000044
represents the step P ij In the processing equipment M k The time required for the start of the machining,
Figure FDA0003948143410000045
represents the step P ij In the processing equipment M k Total processing time of (1), P ij Denotes the jth process, M, of the ith work k Denotes a k-th processing apparatus;
Figure FDA0003948143410000046
as a device M k The processing energy consumption cost of the jth procedure for processing the ith workpiece,
Figure FDA0003948143410000047
for selecting a processing apparatus M k Carrying out the step P ij Processing, EC k Indicating a processing machine M k Non-process energy consumption cost of; t is t fi For the finishing time of the workpiece i, T i Is the delivery date of a workpiece i, wherein i is more than or equal to 1 and less than or equal to n, j is more than or equal to 1 and less than or equal to p, and k is more than or equal to 1 and less than or equal to m.
8. The RFID-based flexible production line cluster control system according to claim 7, wherein the constraint conditions of the scheduling model are as follows:
(1) The same workpiece needs to be processed according to the established process sequence, and different workpieces can be processed in parallel without being restricted by the process;
t sij ≤t si(j+1)
wherein, t sij The starting time of the jth process for the ith workpiece, t si(j+1) The machining starting time of the (j + 1) th procedure of the ith machined workpiece is set;
(2) At any moment, each processing device can only process a certain procedure, and each workpiece to be processed can only be processed on one processing device at any moment;
Figure FDA0003948143410000048
Figure FDA0003948143410000049
indicating that at least one machine can process step P ij ；
Figure FDA00039481434100000410
Wherein, the first and the second end of the pipe are connected with each other,
Figure FDA00039481434100000411
for processing apparatus M k The starting time of the j-th process for the ith workpiece is up,
Figure FDA0003948143410000051
for processing apparatus M k The processing time of the jth procedure of the ith processing workpiece is finished,
Figure FDA0003948143410000052
for the processing apparatus M k The machining starting time of the (j + 1) th procedure of the ith machined workpiece is up to;
(3) The product of the temporary slip is processed in a certain process with priority, the delivery date earliest priority of the temporary slip is set as level 1, the delivery date latest priority of the temporary slip is set as level n, and when the product is about to be processed in the equipment M k Upper processed workpiece W a Meets the temporary insertion of a single workpiece W i While the workpiece W is in contact with i At the device M k Step P of (2) ij End time ratio of workpiece W a At device M k Step P of (2) ab The start time of (c) is earlier, namely:
Figure FDA0003948143410000053
CN202211439734.0A 2022-11-17 2022-11-17 Flexible production line group control system and method based on RFID Pending CN115775009A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202211439734.0A CN115775009A (en) 2022-11-17 2022-11-17 Flexible production line group control system and method based on RFID

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202211439734.0A CN115775009A (en) 2022-11-17 2022-11-17 Flexible production line group control system and method based on RFID

Publications (1)

Publication Number Publication Date
CN115775009A true CN115775009A (en) 2023-03-10

Family

ID=85389418

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202211439734.0A Pending CN115775009A (en) 2022-11-17 2022-11-17 Flexible production line group control system and method based on RFID

Country Status (1)

Country Link
CN (1) CN115775009A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116560326A (en) * 2023-07-07 2023-08-08 中通服建设有限公司 Intelligent factory management platform

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116560326A (en) * 2023-07-07 2023-08-08 中通服建设有限公司 Intelligent factory management platform
CN116560326B (en) * 2023-07-07 2023-09-22 中通服建设有限公司 Intelligent factory management platform

Similar Documents

Publication Publication Date Title
CN106779406B (en) MES system based on RFID
CN104408554A (en) Intelligent management system for FMS (Flexible Manufacture System) cutters based on two-dimensional technology
CN110705814A (en) MES system based on intelligent manufacturing management
CN112249574A (en) Device and system for material to enter and exit warehouse
Coito et al. A novel framework for intelligent automation
CN109034686A (en) A kind of workpiece retroactive method based on electronic tag
CN115775009A (en) Flexible production line group control system and method based on RFID
CN111047257A (en) Production order management system based on 5G network
CN110232504A (en) A kind of quality manufacturing execution system platform and terminal
CN112596476A (en) Formula switching method, equipment and system
CN110516939A (en) Warehouse homework dispatches system
Ostojic et al. Implementation of automatic identification technology in a process of fixture assembly/disassembly
CN111459116A (en) High-efficiency digital management system for intelligent production line of pipes
CN112558576A (en) Safe and efficient automatic integrated control method and system
CN105045230A (en) Automatic production line control system and automatic production line control method
CN114779723A (en) Management and control system and method for flexible manufacturing system
Denkena et al. Interpretation and optimization of material flow via system behavior reconstruction
CN201741274U (en) Dynamic data acquisition unit used in manufacture industry production process
CN112101505A (en) Tracing management system and method for product production
CN101551659B (en) Storage monitoring system integrating wireless radio-frequency identification
CN103309284A (en) Electronic tag identification system applied to machine tool optimization control
CN115587771A (en) Intelligent warehouse management method and system based on PDA (personal digital Assistant) identification
CN213399646U (en) Product production's management system of traceing back
CN113095622A (en) Production control system and method
CN111176174A (en) Multifunctional supervision system for stamping workshop

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination