WO2013121572A1

WO2013121572A1 - Method of providing different-type system data in distributed system

Info

Publication number: WO2013121572A1
Application number: PCT/JP2012/053742
Authority: WO
Inventors: 山本　秀典; 加藤　博光; 外岡　秀樹
Original assignee: 株式会社日立製作所
Priority date: 2012-02-17
Filing date: 2012-02-17
Publication date: 2013-08-22
Also published as: JP5809743B2; JPWO2013121572A1

Abstract

When data distributed within one system is acquired and stored in a database, and access to the database from an application in the local system or from another system is provided, generation of a large volume of data, a large load that is caused by a conversion process, or another cause can result in a data logjam and an inability to achieve a performance request from the application, data can be lost, or other problems can occur. In the present invention, (1) Separate 'receiving', 'analysis', 'conversion' and 'sending' levels are created, and a process module for each level is made plug-in capable. (2) On the basis of the type, importance level, frequency or other attributes of data, and on the basis of a process timing for an application that uses the data, a priority level is determined and the data is allocated. (3) Data that is unable to be converted due to a mismatch with a conversion definition is stored and managed separately. A list of the applicable data is presented to the application.

Description

Method for providing heterogeneous system data in a distributed system

The present invention obtains data distributed in one system and stores it in a database in a distributed system composed of a plurality of independent nodes interconnected via network work in the field of smart grid or electric power. The present invention also relates to a method for providing / distributing data and coordinating between different systems, which is performed by permitting access to the database from an application in the own system or from another system.

A facility machine provided with a device for controlling the facility machine on the basis of an instruction from the management device, and a management device having a management application program for managing the facility device in a facility machine that performs predetermined processing. Connected to the output of the management application program is converted into a format that can be processed by the equipment device, and the equipment device executes a predetermined process,
A communication driver for converting data communicated between the management device and the equipment device, the device being provided for each type of the device provided in the manufacturing system, and for communicating with the device A driver and an apparatus driver that is provided for each type of the equipment machine provided in the manufacturing system and accesses the target equipment machine using the device driver according to an instruction from the management application program; Hierarchical communication drivers have been proposed. (See Patent Document 1)
In the communication driver, the device driver and the device driver are created by function objects created so as to have predetermined parameters, attributes, and operations for each function of the device and the equipment machine corresponding to each driver. Is done.

In the communication driver, the function content of the device driver or the device driver is class information described according to the model of the function object, and the setting value for each device driver or the device driver is set as the class driver. The content of the function or the setting value is described in a markup language according to a data model in which the information classified and associated with the class information is instance information.

Further, in the communication driver, the communication interface of the functional object of the device driver or the device driver is described in an interface description language, and the device driver or the device driver includes the communication interface. The class information obtained by classifying the description content of the data based on the description model of the interface description language and the class information of the data model are mapped, and the mapping result and a configuration including an instance corresponding to the functional object obtained from the data model The communication data is processed with reference to the communication information.

International Publication WO2006 / 114810

The subject of the present invention is a distributed system in the field of smart grids, etc., which conforms to different standards and specifications, and an unspecified number of equipment is frequently attached to and detached from the system. It is necessary to flexibly link between systems in different ranges. Further, when data from these different equipment is provided to an application, it is necessary to convert the data structure / data model into a common structure and to achieve performance requirements such as the processing cycle of the application.

However, the technique disclosed in Patent Document 1 has the following problems.

First, there are many types of standards (data models, interfaces, etc.) and communication protocols (depending on the network to be used) that are compliant with each linked system. The It is a heavy load to follow these individually and create a process for the linked part of the system.

Secondly, due to the large amount of data generated, the high load of conversion processing (which takes time), etc., the data stays and the performance request from the application cannot be achieved, the queue overflows and the received data is lost, etc. Malfunctions can occur. Since the number of data sources is unspecified and variable, it is difficult to estimate the maximum queue size in advance.

③ If there is no data that meets the conversion definition due to data definition or conversion definition deviation from other connected systems, update of standard specifications, etc., the conversion cannot be established and data cannot be provided to the application. In the first place, it is difficult to completely match definitions between different systems.

The present invention aims to provide a data providing method for exchanging data between systems with different standards and specifications.

In order to achieve the above object, the present invention comprises the following arrangement. That is, the distributed system of the present invention is
A plurality of independent equipment nodes and control system application nodes that are interconnected via a network, each running one or more equipment and control system applications in the control system; Control system application to exchange data with equipment)
One or more data transfer servers for obtaining and transferring communication messages between one or more equipment nodes;
One or more data conversion servers for receiving a message transferred from the data transfer server and performing processing such as analysis of data included in the message and conversion to a standard data format in the system;
One or more database management servers for storing and managing data converted by the data conversion server in a database and providing data to be stored in the database for an application;
One or more application nodes on which applications that access and use data stored in the database are run.

In the data providing method of the distributed system,
In the data transfer server, obtaining a communication message between the equipment device node where the equipment in the control system operates and the control system application node, and transferring the message to the data conversion server;
The data conversion server receives a transfer message from the data transfer server, analyzes the data included in the message, determines the priority of the data based on the result of the data analysis, and the priority A step of performing a conversion process and a queue for the conversion process based on the steps, a step of taking out data from the queue and performing a conversion process, a step of transmitting the converted data to the database management server,
The database management server receives the data transmitted from the data conversion server and stores the data in the database, and the data stored in the database is stored in one or more application nodes in the own system or in another system. Providing to the running application at one or more application nodes.

According to the present invention, it is not necessary for an application developer to create a complicated process related to data access to satisfy data requirements or performance requirements for utilizing data collected from other systems, and to develop application logic. Contribute to reducing development man-hours and reducing errors. In addition, since the scope of the system and the type, number, amount and frequency of data sources in the system are not fixed, it is not necessary to calculate the queue capacity when constructing a system that can be changed during operation. This contributes to reducing the system construction load.

It is a figure which shows the outline | summary of the heterogeneous system data provision method in the distributed system by this invention. It is a figure which shows the outline | summary of the distributed system which is an application destination of this invention. It is a figure which shows the whole process sequence between several nodes which comprise a distributed system in enforcing the heterogeneous system data provision method by this invention. It is a figure which shows the module structure of the data conversion server which comprises the distributed system in this invention, and performs analysis, conversion, etc. of the data collected in a system. It is a figure which shows the module structure of the database management server which comprises the distributed system in this invention, accumulate | stores and manages the data collected in a system, and provides data with respect to an application. It is a figure which shows the structure of the data analysis table managed by the data conversion server in this invention. It is a flowchart which shows the flow of the process for the analysis in the data conversion server in this invention, and distribution to a conversion process. It is a flowchart which shows the flow of a process for application process timing determination for determining the priority of execution of the conversion process with respect to received data in the data conversion server in this invention. It is a figure which shows the structure of the queue used in the data conversion server in this invention. It is a flowchart which shows the flow of the process in the conversion process for producing the data transmitted to the database management server in the data conversion server in this invention.

FIG. 1 is a diagram showing an outline of a method for providing heterogeneous system data in a distributed system according to the present invention.

As shown in FIG. 2 described later, the main components of the distributed system are between one or more facility equipment nodes 0205a and control system application node 0205b in which one or more equipment devices and control system applications in the control system operate. A data transfer server 0203 for acquiring and transferring a communication message in the network, and data conversion for receiving the transferred message and performing processing such as analysis of data included in the message and conversion to a standard data format in the system A server 0201, a database management server 0202 for storing and managing the converted data in a database and providing data stored in the database to an application; an application for accessing and using the data stored in the database; Running application node Is 204.

The processing in the data conversion server 0201 is classified into four layers: reception 0111, analysis / distribution 0112, conversion 0113, and transmission 0114, and the data received and converted in each layer and the data source of the data are compliant. Processes (programs) based on standards, etc. can be built in with plug-ins. Thereby, the system realized by the present invention can support a plurality of standards.

In the analysis / distribution 0112, as shown in the explanatory diagram 0121, the priority of data is determined according to the processing timing of the application using the data, and the data is distributed to the conversion process based on the priority. For example, when processing is performed periodically, among the data (data indicated by solid line arrows in the explanatory diagram 0121) that occurs after processing in a certain cycle and is used in processing in the next cycle, Like the data that occurs immediately after processing in a certain cycle and the data that occurs immediately before processing in the next cycle, each priority is set according to the timing at which the data occurs, and the data according to the priority Storage destination (normal queue / priority queue) is determined. Such application processing timing is stored in the application operation information 0445 and used by the application processing monitoring unit 0413 described later. Note that the distribution here is performed according to the priority, either to the priority queue, the normal queue, or the standby database. In the standby DB, for example, data used offline (data without urgency) such as history data is stored.

In the conversion 0113, data that has been successfully converted is stored in the converted database 0131 or directly transmitted to the application node 0204, and data that cannot be converted due to a mismatch in the conversion definition or the like is distinguished from data that has been successfully converted and is not converted. To store. A list of unconverted data is presented to the user for the application.

The data conversion server 0201, database management server 0202, and data transfer server 0203 shown in FIG. 1 can also be realized by one processing device (server). In that case, at least one application node 0204 and at least one node which is the equipment device node 0205a or the control system application node 0205b are connected to the processing apparatus via the network. In addition, the data conversion server 0201 and the database management server 0202 can be realized by one processing device (server), and the data conversion server 0201 and the data transfer server 0203 can be realized by one processing device (server). it can.

The details of each process above will be described in the following figures.

FIG. 2 is a diagram showing an overview of a distributed system to which the present invention is applied.

The main component of the distributed system is to acquire a communication message between one or more equipment device nodes 0205a and control system application node 0205b in which one or more equipment devices and control system applications in the control system operate. One or more data transfer servers 0203 to be transferred and a message transferred from the data transfer server 0203 based on the communication definition 0441 are received, and based on a distribution definition including a data analysis table 0418 and an analysis definition 0442 described later. One or more data conversion servers 0201 that analyze data included in the message and perform processing such as conversion to a standard data format in the system based on the conversion definition 0444, and the data converted by the data conversion server 0201 Store and manage database applications One more database management server 0202 provides data stored in the database for access to the data to be stored in the database, or an application to be used is one or more application nodes 0204 running.

One or more equipment device nodes 0205a, a control system application node 0205b, and a data transfer server 0203 in which equipment devices and control system applications operate are connected via a dedicated network 0206 for the control system. On the other hand, the data transfer server 0203 and the data conversion server 0201 are connected via the network 0207, and the data conversion server 0201, the database management server 0202, and the application node 0204 are connected via the network 0208. You may connect via the same network.

The main hardware configuration of the data conversion server 0201 includes a processing device (CPU) 0211, a storage device (memory, hard disk) 0212, and a communication device 0213.

The main hardware configuration of the database management server 0202 includes a processing device (CPU) 0221, a storage device (memory, hard disk) 0222, and a communication device 0223.
The main hardware configuration of the data transfer server 0203 includes a processing device (CPU) 0231, a storage device (memory, hard disk) 0232, and a communication device 0233.
The main hardware configuration of the application node 0204 includes a processing device (CPU) 0241, a storage device (memory, hard disk) 0242, and a communication device 0243.
The main hardware configurations of the equipment device node 0205a and the control system application node 0205b on which the equipment and control system applications operate include a processing device (CPU) 0251, a storage device (memory, hard disk) 0252, and a communication device 0253.

FIG. 3 is a diagram showing an overall processing sequence between a plurality of nodes constituting a distributed system in carrying out the heterogeneous system data providing method according to the present invention.

The main components are the equipment device node 0205a or the control system application node 0205b in the control system that is the data source, the data transfer server 0203 that acquires and transfers the message from the control system, and the analysis and conversion of the data included in the message A data conversion server 0201 that performs processing, a database management server 0202 that stores and manages data converted into a standard format in a database, and an application node 0204 in which an application that uses the data stored in the database operates.

In step 0301, the facility equipment node 0205a or the control system application node 0205b transmits a message to the control system destination. In step 0311, the data transfer server 0203 acquires the transmission message in step 0301 and transfers it to the data conversion server 0201.

In step 0321, the data conversion server 0201 receives the transfer message from the data transfer server 0203 in step 0311. In step 0322, one or more data are extracted from the received message in step 0321, and data analysis and distribution to the data conversion process are performed. Details of the distribution process are shown in FIG. In step 0323, conversion processing is performed on the data in accordance with the distribution result in step 0322. The conversion process is either normal conversion or differential conversion, and details are shown in FIG. In step 0324, the data after the conversion in step 0323 is transmitted to the database management server 0202.

In step 0331, the database management server 0202 receives the transmission data from the data conversion server 0201 in step 0324. In step 0332, the reception data of step 0331 is stored in the database. The application node 0204 requests data from the database management server 0202 in step 0341. In step 0333, the database management server 0202 accepts the data request in step 0341 and extracts the corresponding data from the database. In step 0334, the data extracted in step 0333 is transmitted to the requesting application node 0204. In the application node 0204, in step 0342, the transmission data in step 0334 is acquired.

FIG. 4 is a diagram showing a module configuration of the data conversion server 0201 that constitutes the distributed system according to the present invention and performs analysis and conversion of data collected in the system.

In the data conversion server 0201, middleware 0401 for receiving, analyzing / sorting, converting and transmitting data is introduced.

The main components of the middleware 0401 refer to the communication definition 0441, receive the transfer message from the data transfer server 0203 via the network 207 and the data communication unit 0417, and the message received from the data reception unit 0412 The data analysis / distribution unit 0412 performs data analysis and distribution to the conversion process with reference to the data analysis table 0418, the analysis definition 0442 that is information for decoding the communication message, Data that performs conversion processing with reference to the conversion definition (0443, 0444) for the data received through the priority queue (0421, 0423) or the normal queue (0422, 0424) according to the distribution result of the distribution unit 0412 Conversion (normal) part 0414 or data Data conversion unit 0415, data transmission unit 0416 that transmits the converted data to the database management server 0202 via the communication processing unit 0417 and the network 208, and application processing that uses data based on the application operation information 0445 An application process monitoring unit 0413 that monitors timing. The plug-ins 0431 to 0434 are processing programs of the data receiving unit 0411, the data analysis / sorting unit 0412, the data conversion (normal) unit 0414, and the data conversion (difference) unit 0415, respectively. A plurality of programs corresponding to data definition and conversion definition deviation with other systems at the connection destination, update of standard specifications, and the like are prepared.

FIG. 5 is a diagram showing a module configuration of the database management server 0202 that constitutes a distributed system according to the present invention, stores and manages data collected in the system, and provides data to applications.
The database management server 0202 includes a middleware 0501 that performs database access processing, provides an interface to the application, and the data conversion server 0201 as a database that collects, accumulates, and provides data to the application. A converted database 0131 for storing data for which normal conversion processing has been completed and an unconverted database 0132 for storing data that could not be converted by the data conversion server 0201 are introduced.
The main components of the middleware 0501 are a converted DB data storage unit 0511 that receives converted data from the data conversion server 0201 via the network 0208 and the data communication unit 0518, and stores the converted data in the database 0502. An unconverted DB data storage unit 0513 to be stored in the receiving database 0503, a converted DB access unit 0512 that performs access processing to the converted database 0502, an unconverted DB access unit 0514 that performs access processing to the unconverted database 0503, and the application An application interface management unit 0515 that manages a view and an interface for providing data, an application data creation unit 0516 that creates data to be provided to an application, and A data model conversion unit 0517 for performing form data model conversion of data. The converted DB data storage unit 0511 stores data in the converted database 0131 via the converted DB access unit 0512, and the unconverted DB data storage unit 0513 stores the unconverted database 0132 via the unconverted DB access unit 0514. Store data in. In addition, the data model conversion unit 0517 performs processing or the like of data unique to the application as necessary.
FIG. 6 is a diagram showing the configuration of the data analysis table 0418 managed by the data conversion server 0201 according to the present invention.

The data analysis table 0418 is a table prepared in advance, and is referred to when performing analysis (0412) of analysis and conversion of data included in the message transferred from the data transfer server 0203. The main components are data identification information 0611, compliant standard 0612, data type 0613, use side application information 0614, conversion distinction 0615, priority 0616, and latest update time 0617.

Data identification information 0611 stores information for identifying data used in the system. The compliant standard 0612 stores data corresponding to the data identification information 0611 and information related to the standard compliant with the data source of the data. In the data type 0613, information indicating the type of data corresponding to the data identification information 0611 is stored. The usage-side application information 0614 stores information related to an application that performs processing using data corresponding to the data identification information 0611. In the conversion distinction 0615, “normal conversion” or “difference conversion” is stored as the distinction of the conversion process performed on the data corresponding to the data identification information 0611. In the priority 0616, information indicating the priority of data corresponding to the data identification information 0611 is stored as “application priority”, “priority”, “normal”, or “low” in descending order of priority. The This item is referenced in the distribution to the conversion process. The latest update time 0617 stores the time when the data of

items

0611 to 0616 was last updated. These pieces of information are added each time data and an application are registered in the system. In particular, the priority 0616 is updated in conjunction with the data flow during online operation.

FIG. 7 is a flowchart showing a flow of processing for analysis (0412) of received data analysis and conversion processing in the data conversion server 0201 according to the present invention.

In step 0701, the message header of the received message from the data transfer server 0203 is analyzed. That is, referring to the analysis definition 0442, necessary information is extracted from the header portion of the received message according to the type of the received message.
In step 0702, identification information regarding one or more data included in the message is extracted as a result of step 0701. In step 0703, the data identification information is compared with the data identification information 0611 of the data analysis table 0418, and the corresponding data location is referenced from the table.

In step 0704, referring to the current state of the queue (0421 to 0424), if the queue is full, in step 0705, the data is stored in the standby database 0425, and the process is terminated.

In step 0704, referring to the current state of the queue (0421 to 0424), if there is a free space, if the data conversion distinction 0615 is “normal conversion” in step 0706, the priority of the data is determined in step 0707. When the degree 0616 is “application priority” or “priority”, in step 0709, the data is stored in the priority queue 0421 for normal conversion. In step 0710, the priority queue 0421 compares the priorities of the data already stored in the queue, performs rearrangement according to the priorities, and ends the process.

If the priority 0616 of the data is “normal” in step 0707, the data is stored in the normal queue 0421 for normal conversion in step 0711, and the process is terminated.

In step 0706, if the data conversion distinction 0615 is “difference conversion”, in step 0708, if the data priority 0616 is “application priority” or “priority”, in step 0712, the difference conversion is performed. The priority queue 0423 stores the data. In step 0713, the priority queue 0423 compares the priorities of the data already stored in the queue, performs rearrangement according to the priorities, and ends the process. If the priority 0616 of the data is “normal” in step 708, the data is stored in the normal queue 0422 for normal conversion in step 0714, and the process ends.

FIG. 8 shows the flow of processing for determining the application processing timing executed by the application processing monitoring unit 0413 for determining the priority of conversion processing for received data in the data conversion server 0201 according to the present invention. It is a flowchart to show.

In step 0801, registration of information (application data, processing cycle, processing start time, etc.) relating to the application using the data stored in the database (0502, 0503) in the database management server 0202 is accepted via the data conversion server 0201. Keep it. In step 0802, monitoring of the operating state of an application that uses data stored in the database is started.

In step 0803, if the status of the application is finished or stopped, in step 0804, the priority of the use data of the application is set to “normal” and the data analysis table 0418 managed by the data conversion server 0201 is managed. Is updated (priority 0616), and the process returns to step 0803.

In step 0803, if the state of the application is in operation, if the interval until the next cycle execution of the application is small in step 0805, in step 0806, the priority of the use data of the application is set to “application priority”. In step 0807, the corresponding part of the data analysis table 0418 managed by the data conversion server 0201 is updated, and the process returns to step 0803. If the interval until the next cycle execution of the application is large in step 0805, the priority of the use data of the application is set to “normal” in step 0808, and the data conversion server 0201 manages in step 0809. The corresponding part (priority 0616) in the data analysis table 0418 is updated, and the process returns to step 0803.

FIG. 9 is a diagram showing the structure of queues (0421 to 0424) used in the data conversion server 0201 according to the present invention.

There are two types of queues used in the data conversion server 0201: a priority queue 0901 (0421, 0423) and a normal queue 0902 (0422, 0424). For conversion processing, normal conversion (0421, 0422) and difference conversion (0423) , 0424), the two types of queues are arranged independently.

The priority queue 0901 is a queue for storing high priority data, and conversion processing is preferentially started for the data stored in the queue. Further, the processing order is changed according to the priority of each data among several data stored in the queue.
The main components of the priority queue 0901 are an address 0911, a storage time 0912, a status 0913, data 0914, and a next address 0915.

The address 0911 stores the address of the data storage area in the queue. The storage time 0912 stores the time when the data was last stored in the area indicated by the address 0911. In the state 0913, “free”, “waiting for processing”, or “processing in progress” is stored as the state of the area indicated by the address 0911. Data 0914 stores data to be converted. The next address 0915 stores the address of the area that is referred to next after the processing on the data stored in the area indicated by the address 0911 is completed.

The normal queue 0902 is a queue that stores normal data that is not high in priority, and conversion processing is started in the stored order. The main components of the normal queue 0902 are an address 0921, a storage time 0922, a status 0923, and data 0924.

The address 0921 stores the address of the data storage area in the queue. The storage time 0922 stores the time when the data was last stored in the area indicated by the address 0911. In the status 0923, “free”, “waiting for processing”, or “processing in progress” is stored as the status of the area indicated by the address 0911. Data 0924 stores data to be converted.

FIG. 10 is a flowchart showing the flow of processing in conversion processing for creating data to be transmitted to the database management server 0202 in the data conversion server 0201 according to the present invention. That is, FIG. 10 shows processing performed by the data conversion (normal) unit 0414 and the data conversion (difference) unit 0415.

In step 1001, the

conversion definitions

0443 and 0444 are referred to. The

conversion definitions

0443 and 0444 define data mapping and data calculation between the received data and the application side. In particular, the conversion definition 0444 includes a definition indicating what kind of information the difference is in addition to the conversion definition 0443.
If there is a definition corresponding to the target data in the conversion definition of 1001 in step 1002, a conversion process is performed on the data in step 1003. In step 1004, the data after the conversion in step 1003 is transmitted to be stored in the converted database 0502 in the database management server 0202. In step 1002, if there is no definition corresponding to the target data in the conversion definition of step 1001, in step 1005, the data is transmitted for storage in the unconverted database 0503 in the database management server 0202 without conversion. In step 1006, information on unconverted data in step 1005 is added to the unconverted data list.

0201: Data conversion server, 0202: DB management server, 0203: Data transfer server, 0204: Application node, 0205a: Equipment device node, 0205b: Control system application node,
0211, 0221, 0231, 0241, 0251: processing device,
0212, 0222, 0232, 0242, 0252: storage device,
0213, 0223, 0233, 0243, 0253: communication device,
0206, 0207, 0208: Network

Claims

A plurality of independent equipment device nodes and control system application nodes that are interconnected via a network, each of which operates one or more equipment and control system applications in the control system;
One or more data transfer servers that acquire and transfer communication messages between the one or more facility equipment nodes in which a control system application operates and one or more facility equipment nodes in the control system and the control system application node;
One or more data conversion servers for receiving a message transferred from the data transfer server and performing processing including analysis of data included in the message and conversion to a standard data format in the system;
One or more database management servers that store and manage data converted by the data conversion server in a database and provide data to be stored in the database for an application;
In a distributed system including one or more application nodes that access data stored in the database and run applications to be used,
In the data transfer server, obtaining a communication message between the equipment node and the control system application node in which the equipment and control system application in the control system operate, and transferring to the data conversion server;
The data conversion server receives the transfer message from the data transfer server, analyzes the data included in the message, determines the priority of the data based on the result of the data analysis, and the priority A step of performing conversion processing and distribution to a queue for conversion processing based on the degree, a step of taking out data from the queue and performing conversion processing, a step of transmitting the converted data to the database management server,
The database management server receives the data transmitted from the data conversion server and stores it in the database, and the data stored in the database is stored in one or more nodes in the own system or in another system. A method for providing heterogeneous system data in a distributed system, comprising the step of providing to the application node running on one or more nodes.
In claim 1, in the data conversion server, processing is divided into reception, analysis, conversion, and transmission layers, and processing modules in each layer are created for each corresponding standard, etc., and incorporated by plug-ins. A method for providing heterogeneous system data in a distributed system.
3. The data conversion server according to claim 1, wherein the data conversion server determines the priority of the data based on the analysis result of the data included in the message received from the data transfer server and distributes the data to the conversion process based on the priority. A method for providing heterogeneous system data in a distributed system, characterized in that:
4. The processing timing of an application that uses the data when the data conversion server determines the priority of the data based on the analysis result of the data included in the message received from the data transfer server. A method for providing heterogeneous system data in a distributed system, wherein the priority of the data is increased when the interval until the next execution of the application is short.
4. The data type, importance, frequency, etc. according to claim 3, wherein the data conversion server determines the priority of the data based on the analysis result of the data included in the message received from the data transfer server. , And determining the priority according to the priority definition for the item in advance, the heterogeneous system data providing method in the distributed system.
4. The data conversion server according to claim 1, wherein the data conversion server distributes the data to the received data from the data transfer server according to the conversion definition according to the definition based on the data type and frequency. Normal conversion to carry out the conversion process, or extract and convert only the part updated from the previous reception in the received data from the data transfer server, the part that has not been updated uses the previous converted data, A method for providing heterogeneous system data in a distributed system, characterized in that differential conversion is performed by combining these.
7. The priority queue and the normal queue are arranged for the normal conversion and the difference conversion in the data conversion server according to claim 3, and the priority queue or the normal queue according to the priority based on the data analysis result. A method for providing heterogeneous system data in a distributed system, characterized in that distribution to a queue is performed, and that the processing order is further changed in the priority queue based on the priority of the data.
4. The provision of heterogeneous system data in a distributed system according to claim 3, wherein if the priority based on the data analysis result is low, the data conversion server stores the data in a standby database and suspends execution of the conversion process. Method.
3. The data conversion process according to claim 1 or 2, wherein when the data conversion process is performed in the data conversion server and there is no conversion definition corresponding to the data received from the data transfer server, the data conversion process A method for providing heterogeneous system data in a distributed system, wherein the non-converted data is transmitted to the database management server and stored in the unconverted database.
10. The method for providing heterogeneous system data in a distributed system according to claim 9, wherein the database management server creates a list of the unconverted data stored in the unconverted database and provides it to an application.
A plurality of independent equipment device nodes and control system application nodes that are interconnected via a network, each of which operates one or more equipment and control system applications in the control system;
Data transfer means for acquiring and transferring a communication message between one or more facility equipment nodes in which a control system application and one or more equipment equipment nodes in which a control system application operates and the control system application node, and the data transfer Data conversion means for receiving a message transferred from the means and performing processing including analysis of data contained in the message and conversion to a standard data format in the system, and data converted by the data conversion means in a database A server having database management means for storing and managing and providing data stored in the database to the application, and one or more applications for accessing the data stored in the database and operating the application to be used Distributed system characterized by including application nodes Stem.
A plurality of independent equipment device nodes and control system application nodes that are interconnected via a network, each of which operates one or more equipment and control system applications in the control system;
A data transfer server that acquires and transfers a communication message between one or more facility equipment nodes in which a control system application and one or more equipment devices in which the control system application operates and the control system application node;
Data conversion means for receiving a message transferred from the data transfer server, performing processing including analysis of data included in the message, conversion to a standard data format in the system, and converted by the data conversion means A server having database management means for storing and managing data in a database and providing data stored in the database to an application, and an application to be used by accessing the data stored in the database A distributed system comprising two or more application nodes.
A plurality of independent equipment device nodes and control system application nodes that are interconnected via a network, each of which operates one or more equipment and control system applications in the control system;
Data transfer means for acquiring and transferring a communication message between one or more facility equipment nodes in which a control system application and one or more equipment equipment nodes in which a control system application operates and the control system application node, and the data transfer A data conversion means for receiving a message transferred from the means and performing processing including analysis of data included in the message and conversion to a standard data format in the system,
A database management server that stores and manages data converted by the data conversion means in a database, and provides data stored in the database to an application, and an application that accesses and uses data stored in the database A distributed system comprising: one or more application nodes running on the server.
The data transfer means or the data transfer server acquires a communication message between the equipment device node in which the equipment and control system application in the control system operate and the control system application node, and transfers the communication message to the data conversion means. Means to
The data conversion means receives the transfer message from the data transfer means, analyzes the data included in the message, determines the priority of the data based on the result of the data analysis, and based on the priority A means for performing conversion processing and sorting to a queue for conversion processing, taking out data from the queue, performing conversion processing, and transmitting the converted data to the database management server,
The database management server or the database management means receives data transmitted from the data conversion means, stores it in a database, and stores the data stored in the database as one or more nodes in the own system or other 14. A distributed system according to any of claims 11, 12 and 13, characterized in that it comprises means for providing to the application node running on one or more nodes in the system.