KR102216308B1 - Interface Middleware System Having Cluster Architecture for Smart Factory Platform - Google Patents

Abstract

The interface middleware system of a clustering structure for a smart factory platform according to an aspect of the present invention, which can collect data without data loss by dualizing a plurality of receiving processes for each process, operates in an active state and operates in an active state. A first interface middleware server including a plurality of first receiving processes for obtaining collected data from a data collecting device according to a protocol; A second interface middleware server operating in an active state to form a cluster structure with the first interface middleware server, and including a plurality of second processes identical to the plurality of first receiving processes; And selectively converting only the first receiving process in which an error has occurred among the first receiving processes set as the master to a slave, and a second receiving process corresponding to the first receiving process in which the error has occurred among the second receiving processes set as slaves. It characterized in that it comprises a reception control unit for selectively switching only the process to the master.

Description

Interface middleware system having cluster architecture for smart factory platform {Interface Middleware System Having Cluster Architecture for Smart Factory Platform}

The present invention relates to a factory management system, and more specifically, to a smart factory platform.

With the recent development of sensor technologies, a factory management system is being developed that attaches sensors to each facility of the factory and analyzes the situation of a facility or factory in real time using sensing data sensed by the sensors.

In the case of such a factory management system, not only a large amount of collected data is generated due to many sensors having a short sensing period, but also a large amount of collected data must be collected in a predetermined order.

The factory management system includes a server that collects collected data using a plurality of processes in order to efficiently collect a large amount of collected data. In the case of such a factory management system, there is a problem in that the server must stop the operation when a failure occurs in some of the plurality of processors.

In addition, if the operation of the server is stopped, the data collection function is not performed until the server is restarted, so there is a problem that a large amount of data may be lost, and the operation of the factory is stopped to prevent the loss of collected data. There is a problem that economic losses are inevitable.

The present invention is to solve the above-described problem, and provides a cluster structure interface middleware system for a smart factory platform capable of collecting data without data loss by dualizing a plurality of receiving processes for each process. do.

In addition, the present invention provides an interface middleware system having a clustering structure for a smart factory platform in which two interface middleware servers are formed in a cluster structure so that each interface middleware server can operate in an active state. do.

In order to achieve the above object, the interface middleware system of a clustering structure for a smart factory platform according to an aspect of the present invention operates in an active state and acquires collected data from a data collection device according to different communication protocols. A first interface middleware server including a plurality of first receiving processes; A second interface middleware server operating in an active state to form a cluster structure with the first interface middleware server, and including a plurality of second processes identical to the plurality of first receiving processes; And selectively converting only the first receiving process in which an error has occurred among the first receiving processes set as the master to a slave, and a second receiving process corresponding to the first receiving process in which the error has occurred among the second receiving processes set as slaves. It characterized in that it comprises a reception control unit for selectively switching only the process to the master.

According to the present invention, since a plurality of receiving processes included in each interface middleware server can be duplicated for each process, even if an error occurs in any one of the plurality of receiving processes included in the first interface middleware server, the receiving processor in which the error occurs However, since it can be operated in the second interface middleware server, data loss does not occur, thereby improving the reliability of collected data.

In addition, according to the present invention, since the two interface middleware servers are formed in a cluster structure so that both the two interface middleware servers can operate in an active state, it is possible to ensure high availability of the middleware system as well as among a plurality of processes. Even if an error occurs in any one, the entire server is not transferred, but only the process in which the error occurs is transferred to the other interface middleware server, so there is an effect that no time delay occurs because the transfer operation of the server unit is not required.

1 is a diagram showing a smart factory architecture according to the present invention.
2 is a diagram showing the configuration of an interface middleware system according to an embodiment of the present invention.
3 is a diagram schematically showing the configuration of a reception control unit according to an embodiment of the present invention.
4A to 4C are diagrams illustrating a method of setting a master and a slave for each process by a reception control unit according to an embodiment of the present invention.
FIG. 5 is a diagram illustrating that the access control unit according to an embodiment of the present invention transmits collected data to a plurality of server receiving processes set as masters or slaves by the receiving control unit.
6 is a block diagram showing the configuration of a first preprocessor according to an embodiment of the present invention.

The meaning of the terms described in this specification should be understood as follows.

Singular expressions should be understood as including plural expressions unless clearly defined differently in context, and terms such as “first” and “second” are used to distinguish one element from other elements, The scope of rights should not be limited by these terms.

It is to be understood that terms such as "comprise" or "have" do not preclude the presence or addition of one or more other features or numbers, steps, actions, components, parts, or combinations thereof.

The term “at least one” is to be understood as including all possible combinations from one or more related items. For example, the meaning of “at least one of the first item, the second item, and the third item” means 2 among the first item, the second item, and the third item, as well as the first item, the second item, and the third item. It means a combination of all items that can be presented from more than one.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a diagram showing a smart factory architecture according to the present invention.

As shown in FIG. 1, the smart factory architecture according to the present invention is composed of the same layer as the data collection device 1, the smart factory platform 1000, and the application system 3.

The data collection device 1 collects data generated in the process of various processes and transmits the collected data to the smart factory platform 1000. In an embodiment, the data collection device 1 may collect micro data generated in the process of various processes. Here, the micro data refers to raw data as data collected through various sensors. In the following, for convenience of explanation, micro data will be expressed as collected data.

The data collection device 1 includes various instruments, sensors, actuators, and instruments for collecting collected data, or P/C, PLC (Programmable Logic Controller), or DCS that integrates or controls data collected by sensors, actuators, etc. (Distributed Control System), etc.

For example, the data collection device 1 may collect data generated in a continuous process. The continuous process refers to a process in which a plurality of processes for producing a finished product using raw materials are continuously performed and the outputs of each process are mixed with each other or the state of the outputs of a specific process is changed and supplied to a subsequent process. The steel process is a representative example of such a continuous process. Since the steel process consists of various processes such as iron making process, steel making process, casting process, and rolling process, when the data collection device 1 is applied to the steel process, the steel making process, steel making process, casting process, and rolling process, etc. Collecting data generated in the process of the same various processes.

The smart factory platform 1000 processes a large amount of collected data received from the data collection device 1 in real time, and determines in real time whether there is an abnormality in the facility or process for which each collected data is acquired. In addition, the smart factory platform 1000 stores the processed collected data in a big data storage unit (not shown) for big data analysis, and provides an inquiry and analysis service for the stored data.

In one embodiment, the smart factory platform 1000 according to the present invention includes an interface middleware system 100, a distributed parallel processing system 200, and a big data analysis system 300, as shown in FIG. 1. . In addition, the smart factory platform 1000 may further include a service system 400, a management system 500, and a security system 600.

The interface middleware system 100 receives collection data transmitted from the data collection device 1. Specifically, the interface middleware system 100 provides a connection means for connecting with heterogeneous devices of Level 0 to Level 2 through various protocols, and standardizes the collected data by pre-processing the collected data collected by the data collection device 1. .

Hereinafter, the interface middleware system 100 according to the present invention will be described in detail with reference to FIG. 2.

2 is a diagram showing the configuration of an interface middleware system 100 according to an embodiment of the present invention. As shown in FIG. 2, the interface middleware system 100 according to the present invention includes first and second interface middleware servers 110a and 110b, a reception control unit 120, and a queue storage unit 130. In addition, the interface middleware system 100 according to the present invention may further include a connection control unit 125.

The first interface middleware server 110a and the second interface middleware server 110b acquire collected data from the data collection device 1 and preprocess the acquired collected data. In one embodiment, the first interface middleware server 110a and the second interface middleware server 110b form a cluster structure with each other, thereby operating in an active-active state to obtain and pre-process collected data.

In particular, the first interface middleware server 110a according to the present invention includes a plurality of first receiving processes for obtaining collected data from the data collection device 1 according to different communication protocols, and the second interface middleware server 110a , 110b) includes a plurality of second reception processes 210b in which a plurality of first reception processes are duplicated for each reception process and are the same as the plurality of first reception processes.

Accordingly, among the first receiving process 210a and the second receiving process 210b, which are duplicated for each receiving process, the receiving process set as the master collects the collected data from the data collection device 1 and becomes the slave. The set receiving process operates in a standby state.

In particular, according to the present invention, a plurality of first receiving processes 210a included in the first interface middleware server 110a and a plurality of second receiving processes 210b included in the second interface middleware server 110b are receiving processes. Since each is duplicated, at least one of the plurality of first receiving processes 210a included in the first interface middleware server 110a can operate and is included in the second interface middleware server 110b At least one second reception process among the plurality of second reception processes 210b may also operate simultaneously.

Accordingly, the interface middleware system 100 according to the present invention is a cluster in which the first interface middleware server 110a can also operate in an active state and the second interface middleware server 110b can also operate in an active state. You will have a structure.

As an example, the first interface middleware server 110a includes a 1-a reception process for collecting a-type collection data from the data collection device 1 and a 1-b reception process for collecting b-type collection data, The two-interface middleware server 110b assumes that the 2-a receiving process in which the 1-a receiving process is duplicated and the 2-b receiving process in which the 2-b receiving process is duplicated include the 2-b receiving process. In this case, when the 1-a reception process operates as a master and the 1-b reception process operates as a slave, the first interface middle server 110a operates in an active state due to the 1-a reception process operating as a master. do. In addition, since the 1-a reception process operates as a master and the 1-b reception process operates as a slave, the 2-a reception process operates as a slave and the 2-b reception process operates as a master. The Weber server 110b operates in an active state due to the 2-b receiving process operating as a master.

As described above, the reason for forming the interface middleware system 100 in a cluster structure in the present invention is that when the first and second interface middleware servers 110a and 110b operate in an active-standby state in a server unit, they operate in an active state. Even if any one of the plurality of processes included in the running interface middleware server stops, the active interface middleware server is switched to the standby state, and the interface middleware server operating in the standby state returns to the master state. This is because it must be transferred, and a large amount of collected data may be lost during the transfer time that occurs.

In the above-described embodiment, the plurality of first and second reception processes 210a and 210b may be client reception processes that directly access the data collection device 1 and read collected data from the data collection device 1. have. According to this embodiment, the plurality of first and second receiving processes 210a and 210b may have different communication protocols for each process. For example, the plurality of first and second receiving processes 210a and 210b may be an OPC client receiving process for obtaining collected data according to an OPC protocol, and an FTP client receiving process for obtaining collected data according to an FTP protocol.

In another embodiment, the plurality of first and second receiving processes 210a and 210b may be a server client receiving collected data from the data collecting device 1 by allowing access to the data collecting device 1. According to this embodiment, the plurality of first and second receiving processes 210a and 210b may have different communication protocols for each process. As an example, the server reception process may be a TCP server reception process capable of receiving collection data according to a TCP protocol.

The reception control unit 120 sets the first and second reception processes 210a and 210b, which are duplicated with each other, for each process, as a master state, and sets the other reception process to a slave. Set to state. Accordingly, the reception process set to the master state by the reception control unit 120 acquires the collected data, and the reception process set to the slave state operates in the standby state.

The reception control unit 120 selectively converts only the first reception process 210a in which an error has occurred among the plurality of first reception processes 210a set as masters, to a slave, and a plurality of second reception processes 210b set as slaves. ), only the second receiving process 210b corresponding to the first receiving process 210a in which an error has occurred is selectively switched to the master.

In the present invention, the reason why the reception control unit 120 sets one of the first and second reception processes 210a and 210b as the master and the other as the slave for each process is, in the case of the present invention, 2 Since the interface middleware servers 110a and 110b are configured in an active-active manner, when processes are processed in different servers with different receiving processes, the processing speed of the process may vary depending on the processing performance of each server. This is because data cannot be collected sequentially.

The reception control unit 120 may include n reception control modules as shown in FIG. 3.

Hereinafter, the reception control unit 120 according to an embodiment of the present invention will be described in more detail with reference to FIG. 3. 3 is a diagram schematically showing the configuration of a reception control unit according to an embodiment of the present invention.

As shown in FIG. 3, the reception control unit 120 includes n reception control modules, one of n reception control modules is a reader reception control module 310, and n- One reception control module may be a follower reception control module (320, 330). In FIG. 3, it is shown that there are three reception control modules, but this is for convenience of explanation, and the number of reception control modules may be two or less, or four or more. Hereinafter, for convenience of description, the reader reception control module 310 and the first and second follower reception control modules 320 and 330 are collectively referred to as a reception control module 310-330.

The reception control modules 310-330 are connected to a plurality of first reception processes 210a and a plurality of second reception processes 210b. Specifically, the first to third reception control modules 310-330 may be connected to at least one first reception process or at least one second reception process. For example, as illustrated in FIG. 3, a plurality of first and second receiving processes 210a and 210b may be distributed for each of the processes that are duplicated with each other and connected to each receiving control module. The reader reception control module 310 is connected to the 1-1 reception process and the 2-1 reception process that are duplicated with each other, and the first follower reception control module 320 is connected to the 1-2 reception process and the second reception process that are duplicated with each other. -1 connected to the receiving process, and the second follower receiving control module 330 is duplicated with each other with the 1-3 receiving process and the 2-3 receiving process and the 1-4 receiving process and the 2-4 receiving process It can be connected to the process. In an embodiment, the reception control modules 310-330 may be connected to a plurality of first and second reception processes 210a and 210b according to the load of each reception control module.

The reception control module 310-330 periodically receives PING from the first and second reception processes 210a and 210b to maintain the connection, and the reception control module 310-330 controls any one of the reception controls. If the module fails to receive pings from the first and second reception processes 210a 210b, the module is connected to another reception control module.

The reception control modules 310 to 330 may match the first and second reception processes 210a and 210b connected to each reception control module for each process, and register them in a name space. That is, the reception control modules 310-330 may match the first reception process 210a and the second reception process identical to the first reception process and register them in the namespace.

The reception control module 310-330 sets the reception process connected to itself as a master and a slave.

The reception control modules 310-330 determine whether the first and second reception processes 210a and 210b connected to each reception control module have a failure. Accordingly, the reception control module 310-330 resets the reception process set as the master to the slave when a failure occurs in the reception process set as the master among the first and second reception processes 210a and 210b, which are duplicated with each other. Reset the set receiving process to the master.

As a leader, the reception control module 310 propagates and synchronizes information generation events of the first and second reception processes 210a and 210b to the first and second follower reception control modules 320 and 330. Specifically, when any one of the follower reception control modules 320 and 330 receives an information generation event from a reception process connected to itself and transmits the information generation event to the reader reception control module 310, the reader reception control module ( 310) propagates the information generation event to other reception control modules. The information generation event may mean at least one of a master or slave setting state of the first or second reception processes 210a and 210b, whether a failure occurs in each reception process, and registration information of a namespace.

For example, when the reader reception control module 310 matches the first and second reception processes 210a and 210b, which are redundant to each other by each reception control module, for each process and registers it in the namespace, the namespace registration information is controlled to receive all followers. It can propagate to modules 320 and 330.

The reason why the reader reception control module 310 according to the present invention propagates the event of the reception process to the follower reception control modules 320 and 330 is, by synchronizing information on the reception process between the reception control modules, This is to enable the reception process to be controlled by another reception control module even if a failure occurs in the control module.

In an embodiment, the reader reception control module 310 may receive approval from a majority of the reception control modules 310-330 to propagate the information generation event.

In the present invention, the reason why the reader reception control module 310 propagates the event of the reception process by receiving the approval of a majority of the plurality of reception control modules is that the reception control module in which the failure occurs due to a failure occurs in the reception control module This is to prevent the information generation event from being propagated from the control module 310.

In one embodiment, the reader reception control module 310 may be selected as a reception control module that is started first among the reception control modules 310-330. In another embodiment, the reception control modules 310-330 may select the reader reception control module 310 by receiving approval from a majority of reception control modules. When a failure occurs in the reader reception control module 310, the reader reception control module 310 may be reselected.

Hereinafter, with reference to Figs. 4A to 4C, a description will be given of setting the master and the slave by the reception control module. In FIGS. 4A to 4C, for convenience of explanation, it will be described that the reception control unit including any one reception control module sets the master/slave.

4A to 4C are diagrams illustrating a method of setting a master and a slave for each process by a reception control unit according to an embodiment of the present invention.

As shown in FIG. 4A, the first interface middleware server 110a includes a 1-a client receiving process 415a and a 1-b client receiving process 420a, and a second interface middleware server 110b A 2 -a client processor 415b in which the 1-a client reception process is duplicated and a 2-b client reception process 420b in which the 1-b client reception process is duplicated.

The reception control unit 120 sets any one of the 1-a-th client reception process 415a and the 2-a-th client reception process 415b as a master and the other as a slave. Also, the reception control unit 120 sets one of the 1-b-th client reception process 420a and the 2-b-th client reception process 420b as a master and the other as a slave. In Figure 4a, assuming that the 1-a client receiving process 415a and the 2-b client receiving process 415b are started first, the 1-a client receiving process 415a and the 2-b client receiving process 415b Is set as the master, and the 1-b client receiving process 415b and the 2-a client receiving process 415a are set as slaves.

Accordingly, the 1-a client reception process 415a and the 2-b client reception process 420b perform a data collection function, so that both the first interface middleware server 110a and the second interface middleware server 110b It is possible to implement a cluster structure that operates in an active state.

On the other hand, if it is determined that a failure has occurred in the 1-a client reception process 415a and the 2-b client reception process 415b, the reception control unit 120 performs the 1-a client reception process as shown in FIG. 4B. (415a) and the 2-b-th client receiving process 415b are transferred to the slave, and the 2-a-th client receiving process 415a and the 1-b-th client receiving process 415a are transferred to the master. Accordingly, the 1-b client reception process 415a and the 2-a client reception process 420b perform a data collection function, so that both the first interface middleware server 110a and the second interface middleware server 110b It is possible to implement a cluster structure that operates in an active state.

As another example, if it is determined that a failure has occurred in the 1-a client reception process 415a, the reception control unit 120 switches the 1-a client reception process 415a to the slave as shown in FIG. -a Switches the client receiving process 415b to the master. Accordingly, the 2-a client reception process 415b and the 2-b client reception process 420b perform a data collection function, so that the first interface middleware server 110a operates in a standby state and the second The interface middleware server 110b may operate in an active-standby structure operating in an active state. Although not illustrated in FIG. 4C, on the contrary, the first interface middleware server 110a may operate in an active state and the second interface middleware server 110b may operate in a standby state.

As described above, the present invention provides an interface middleware server itself when a failure occurs in some receiving processes unlike a general active-standby method, even if all receiving processes operate in one of the first and second interface middleware servers 110a and 110b. Since there is no need to switch over and only the reception process in which a failure has occurred is shifted by the reception control unit 120, there is an effect of improving the efficiency of the interface middleware system 100.

In the above-described embodiment, it has been described that the receiving process is a client receiving process. However, the receiving process may be a server receiving process. In the above-described embodiment, it has been described that when the plurality of first and second reception processes 210a and 210b are client reception processes, the reception control unit 120 sets the master and slave for each reception process. In another embodiment, when the plurality of first and second reception processes 210a and 210b are server reception processes, the reception control unit 120 may set a master and a slave for each reception process. In another embodiment, when the plurality of first and second reception processes 210a and 210b are a client reception process and a server reception process, the reception control unit 120 may set a master and a slave for each reception process.

In the case of this embodiment, the system may further include a connection control unit 125 as shown in FIG. 2 to connect the data access device to the server set as the master.

Referring back to FIG. 2, the connection control unit 125 includes the data collection device 1 and the first and second receiving processes so that the data collection device 1 can transmit the collected data to the first and second receiving processes 210a and 210b. 2 Connect the receiving processes 210a and 210b. Specifically, the plurality of first receiving processes 210a is a plurality of first server receiving processes, and the plurality of second receiving processes 210a is a plurality of second server receiving processes in which a plurality of first server receiving processes are duplicated for each process. In this case, the access control unit connects the data collection device 1 and the first and second server receiving processes so that the first and second server receiving processes can receive the collected data.

In one embodiment, the access control unit 125 is a first reception process or a plurality of second reception processes 210b set as a master by the reception control unit 120 among a plurality of first reception processes 210a. Among them, the data collection device 1 is connected to a second receiving process set as a master by the receiving control unit 120.

The access control unit 125 is connected to the data collection device 1 by allocating a VIP (Virtual Internet Protocol) to receive collected data from the data collection device 1, and the access control unit 125 receives the first and second servers. It connects to the process and transmits the collected data.

In an exemplary embodiment, the access control unit 125 may alternately transmit the collected data received from the data collection device 1 to the first and second server receiving processes that are duplicated for each process. For example, when the access control unit 125 receives the collected data from the data collection device 1, it transmits it to the first server receiving process, and the access control unit 125 receives the collected data from the data collection device 1 again. The first server receiving process can be sent to the duplicated second server receiving process.

In an embodiment, the access control unit 125 may selectively connect to a server receiving process set as a master by the reception control unit 120. Specifically, when the access control unit 125 receives the collected data through the data collection device 1 and the VIP, the access control unit 125 is connected to the server receiving process set as the master and transmits the collected data to the server receiving process set as the master. I can. Accordingly, a server receiving process set as a master may receive collected data from the data collecting device 1, and another server receiving process set as a slave cannot receive the collected data from the data collecting device 1.

Hereinafter, referring to FIG. 5, when the first and second server reception processes are set to master and slave for each of the processes that are duplicated by the reception control unit 120, it will be described that the access control unit 125 transmits collected data. .

5 is a diagram illustrating that the access control unit 125 according to an embodiment of the present invention transmits collected data to a plurality of server receiving processes set as masters or slaves by the reception control unit 120.

As shown in FIG. 5, the first interface middleware server 110a includes a 1-a server reception process 540a and a 1-b server reception process 550a, and the second interface middleware server 110b The 1-a server receiving process 540a includes a duplexed second server receiving process 540b and the 1-b server receiving process 550a duplexing the 2-b server receiving process 550b .

When the 1-a server reception process 540a is set as a master by the reception control unit 120 and the 2-a server reception process 550b is set as a slave, the connection control unit 125 is ) And transmits it to the 1-a server receiving process 540a set as the master.

In addition, when the 1-b server reception process 550a is set as a slave by the reception control unit 120 and the 2-b server reception process 550b is set as a master, the access control unit 125 The collected data is received from (1) and transmitted to the 2-b server receiving process 550b set as the master.

In FIG. 5, it is shown that there are two server reception processes in each of the first and second interfaces, but this is an example, and the number of server reception processes may be one or three or more.

Referring back to FIG. 2, in an embodiment, the access control unit 125 may receive encapsulated collection data from the data collection device and decapsulate it. Specifically, the access control unit 125 forms a tunnel between the data collection device 1, and the access control unit 125 receives the encapsulated collection data from the data collection device 1 through the tunnel, Is decapsulated. The access control unit 125 transmits the decapsulated collected data to the first receiving process 210a operating as the master or the second receiving process 210b operating as the master. In this case, the tunnel may mean a path that is not visible on the network.

The first and second preprocessing units 220b preprocess the collected data obtained by the plurality of first and second receiving processes 210b and store them in the queue storage unit 130. Specifically, the first preprocessor 220a parses, standardizes, and filters collected data. Since the functions and configurations of the first preprocessor 220a and the second preprocessor 220b are the same, the following description will be made focusing on the functions of the first preprocessor 220a.

Hereinafter, the first preprocessor 220a will be described with reference to FIG. 6. 6 is a block diagram showing the configuration of a first preprocessor according to an embodiment of the present invention.

The first preprocessing unit 220a includes a data parsing unit 610, a data standardizing unit 620, and a data filtering unit 630.

When the collected data has a structure in which a group ID consisting of a plurality of item IDs, a collection time, and a plurality of measurement values are repeated, the data parsing unit 610 parses the collected data by group ID, and Each item ID and a plurality of measured values are matched and converted into collected data consisting of one item ID, collection time, and one measurement value.

Here, the item ID is to identify the property of the measured value, and means a value indicating which property of a facility, material, or product is measured during a continuous process, and means temperature or humidity. The group ID refers to a representative value in which several items are grouped for each location or each process in a specific factory. In the above-described embodiment, the group ID and the collection time are described as being separate and distinct concepts, but the collection time may be included in the group ID itself.

According to this implementation, the data parsing unit 610 may parse the collected data by referring to the message layout storage unit 615 in which the message layout for the collected data full text is defined. The message layout storage unit 615 may be included in the first interface middleware server 110a or another device as a separate configuration. However, since the present invention is not limited thereto, information on the message layout may be included in the data parsing unit 610.

The data standardization unit 620 converts the item ID into a standard item ID according to a preset standard conversion criterion for collected data consisting of one item ID, collection time, and one measurement value transmitted from the data parsing unit 610. Standardize the parsed data by converting and unifying the units and digits of the measurement.

The data standardization unit 620 can standardize the item ID, the unit of the measurement value, and the number of digits by referring to the standard conversion standard storage unit 625 included in the first interface middleware server 110a or another device as a separate configuration. However, since the present invention is not limited thereto, information on standard conversion criteria for standardization may be included in the data standardization unit 620.

The data filtering unit 630 determines whether to store the data standardized by the data standardization unit 620 in the queue storage unit 130 according to a preset filtering criterion. As an example, a rating is preset according to the type of collected data, and the data filtering unit 630 may determine whether data to be stored in the queue storage unit 130 according to the rating. In one embodiment, the grade may be determined according to the importance based on the standard item ID of the standardized data, but is not limited thereto.

The data filtering unit 630 may filter the standardized data by referring to the filtering criteria storage unit 635 in which criteria for filtering data that needs to be stored in the queue storage unit 130 are stored. The filtering criterion storage unit 635 may be included in the first interface middleware server 110a or another device as a separate configuration. However, since the present invention is not limited thereto, information about filtering criteria may be stored in the data filtering unit 630.

The data filtering unit 630 stores the filtered data in a queue of the queue storage unit 130. In one embodiment, the data filtering unit 630 may store the filtered data in the queue 131 of the queue storage unit 130 by group ID or standard item ID.

The second preprocessor 220b preprocesses the collected data acquired by the plurality of second reception processes 210b and stores them in the queue storage unit 130. Specifically, the second preprocessor 220b parses, standardizes, and filters collected data.

Hereinafter, since the second preprocessor 220b has the same configuration and function as the first preprocessor 220a, a detailed description thereof will be omitted.

Referring back to FIG. 2, the queue storage unit 130 includes a queue 131 as an area for temporarily storing data preprocessed by the first and second interface middleware servers 110a and 110b before real-time processing.

The queue 131 is a storage for storing data preprocessed by the first and second interface middleware servers 110a and 110b for a predetermined period of time, and may store data based on a disk rather than a memory to prevent data loss. The space for storing data in the plurality of queues 131 may be divided into topics, and several partitions within the same topic may be separated and processed in parallel.

In one embodiment, a unique group ID may be assigned to each data group fetched from the queue storage unit 130 by the distributed parallel processing system 200, and a data fetch address may be managed for each unique group ID. , Data can be stored and provided in the form of a queue that reads and writes data sequentially.

In addition, since the plurality of queue storage units 130 are implemented in a clustering structure, when data is stored in one queue storage unit 130, the data is duplicated to another queue storage unit 130 to be stored in a queue storage unit 130. Even when a failure occurs, the service can be continuously provided by referring to the other queue storage unit 130.

In addition, the first and second interface middleware servers 110a and 110b select one queue storage unit 130 from among the plurality of queue storage units 130 when standardization of the received collected data is completed to store the standardized data. Save it. At this time, the criterion for selecting the queue storage unit 130 to store data may be selected from a variety of rules, for example, a queue storage unit 130 having the lowest load, a method of sequentially selecting, or data It is possible to pre-store and select the queue storage unit 130 to be stored for each collected sensor.

Referring back to FIG. 1, the distributed parallel processing system 200 maps the process identifier to standardized standardized data through the interface middleware system 100, and the mapping data so that data between areas such as operation-facility-quality can be linked and analyzed. Sort them.

The process identifier may include at least one of a facility identifier of a facility that performs each process or a material identifier of a material processed by the facility. At this time, the distributed parallel processing system 200 may extract the facility identifier of the facility where the collected data is generated based on the collection time of the collected data and the attribute information of the sensor that collected the collected data, and work instruction information performed in each process. The material identifier of the material processed in the facility corresponding to the facility identifier mapped to the mapping data may be extracted based on the mapping data.

In one embodiment, the facility identifier may be a facility number assigned to each facility, and the material identifier may be a material number assigned to each material.

Meanwhile, the distributed parallel processing system 200 sequentially arranges mapping data to which the same material identifier is mapped according to collection time, and collects the mapping data arranged according to the time order on the material corresponding to the same material identifier. You can also sort based on the location.

In this way, the distributed parallel processing system 200 according to an embodiment of the present invention maps a process identifier including at least one of a facility identifier and a material identifier to standardized data, and maps the mapped data to a material corresponding to the same material identifier. By sorting the data on the basis of the location where the data was collected, it is possible to check which material for each data is the data collected in the process of passing through which facility, and linkage analysis between each process is possible through tracking this data.

The big data analysis system 300 stores the data arranged by the distributed parallel processing system 200 in a big data storage space. In addition, the big data analysis system 300 manages to prevent data loss and provides an inquiry and analysis function for historical data.

The service system 400 is a structure in which standardized processing processes and business standards are reused as services, and business know-how is converted into a repository to facilitate connection between plan-execution-control through connection between services defined in functional units. The analysis results are processed by calling and executing an analysis model including a quality judgment model or an abnormality prediction model for a material or product.

Since the analysis model is previously stored in the model storage unit (not shown), the service system 400 extracts data necessary for the analysis model from the model storage unit and provides the result when an execution call event for the analysis model is input.

That is, the service system 400 directly receives and analyzes the alignment data processed by the distributed parallel processing system 200, or when the alignment data is stored in the big data analysis system 300, it can refer to it and analyze the corresponding data. have.

The management system 500 manages individual configurations belonging to the smart factory platform 1000 and manages configuration files for configurations for collection of UI/UX management data, individual monitoring of each configuration, and links between preset settings It provides information management, overall system processing performance and integrated monitoring information.

The security system 600 performs authentication, authorization, and access control for a user, and manages security for data itself and security for a transmission path.

The application system 3 processes and provides screens and data necessary for the user based on the smart factory platform 1000.

Those skilled in the art to which the present invention pertains will appreciate that the above-described present invention can be implemented in other specific forms without changing the technical spirit or essential features thereof.

Therefore, it should be understood that the embodiments described above are illustrative in all respects and not limiting. The scope of the present invention is indicated by the claims to be described later rather than the detailed description, and all changes or modified forms derived from the meaning and scope of the claims and their equivalent concepts should be interpreted as being included in the scope of the present invention. do.

1: data collection device 3: application unit
1000: smart factory platform 100: interface middleware system.
110a: first interface middleware server
110b: second interface middleware server
120: reception control unit 125: connection control unit
130: queue storage unit 210a: first receiving process
210b: second reception process 220a: first preprocessor
220b: second preprocessing unit

Claims (12)

A first interface middleware server including a plurality of first client receiving processes operating in an active state and directly accessing a data collecting device to obtain collected data from the data collecting device;
A second interface middleware server operating in an active state to form a cluster structure with the first interface middleware server, and including a plurality of second processes that are the same as each of the plurality of first client receiving processes; And
When an error occurs in any of the first client receiving processes set as the master, only the first client receiving process in which the error has occurred is selectively switched to the slave without switching between the first and second interface middleware servers, and the second set as the slave A smart factory comprising a reception control unit for selectively switching only a second client reception process corresponding to the first client reception process in which the error occurs among the client reception processes to a master to be directly connected to the data collection device Interface middleware system with clustering structure for platform. delete The method of claim 1,
The first interface middleware server further includes a plurality of first server receiving processes for receiving the collection data from the data collection device by allowing access to the data collection device,
The second interface middleware server further includes a plurality of second server receiving processes that are the same as the plurality of first server receiving processes, respectively. The interface middleware system of a clustering structure for a smart factory platform. The method of claim 3,
Connection for connecting the data collection device to a first server reception process operating as a master among the plurality of first server reception processes or a second server reception process operating as a master among the plurality of second server reception processes An interface middleware system having a clustering structure for a smart factory platform, further comprising a control unit. The method of claim 4,
The interface middleware system of a clustering structure for a smart factory platform, wherein the access control unit is connected to the data collection device through a VIP (Virtual Internet Protocol). The method of claim 4,
The connection control unit,
A first server receiving process or master operating as a master by forming a tunnel between the data collecting device and receiving encapsulated collected data from the data collecting device through the tunnel, and decapsulating the encapsulated collected data Interface middleware system of a clustering structure for a smart factory platform, characterized in that the transmission to the second server receiving process operating as. The method of claim 1,
The reception control unit matches the first client reception process and the second client reception process identical to the first client reception process, and registers them in a name space, according to a clustering structure for a smart factory platform. Interface middleware system. The method of claim 1,
The reception control unit includes n (n is a natural number) reception control modules for setting one of the same first client reception process and the second client reception process as a master and the other as a slave,
The n reception control modules
N-1 follower reception control modules for receiving an information generation event of a corresponding client reception process from the first client reception process or the second client reception process;
And a reader reception control module for propagating the received information generation event to other follower reception control modules when the information generation event is received from the follower reception control module. The method of claim 8,
The information generation event includes at least one of a master or slave setting state of the first or second client reception process, whether a failure has occurred, and a registration state for a namespace, the interface of a clustering structure for a smart factory platform. Middleware system. The method of claim 8,
The reader reception control module propagates the information generation event when approval for propagation of the information generation event occurs from at least half of the total reception control modules. The interface middleware system of a clustering structure for a smart factory platform. The method of claim 8,
The reader reception control module is an interface middleware system having a clustering structure for a smart factory platform, wherein the reader reception control module is selected by approval of a majority of the n reception control modules. The method of claim 1,
The first and second interface middleware servers,
The plurality of items included in the group ID include a group ID consisting of a plurality of item IDs for identifying the properties of the measured values included in the collected data, a collection time, and the collected data in which a plurality of measured values are repeatedly arranged A data parsing unit that matches the ID and the plurality of measured values, respectively, and converts them into collected data consisting of one item ID, collection time, and one measurement value;
A data standardization unit that standardizes the collected data by unifying the unit and the number of digits of the measured value of the collected data or converting the item ID representing the attribute of the measured value into a standard item ID, and
The interface middleware system of a clustering structure for a smart factory platform, further comprising at least one of a data filtering unit that stores collected data that needs to be stored in a queue server based on the importance of the collected data.

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