KR101620564B1 - Method for Providing Supervisory Control Service Computer-Readable Recording Medium with Program therefore - Google Patents

Abstract

This embodiment minimizes the dependence on the platform of the HMI system and provides a web-based monitoring and control system that enables the HMI system to be accessed at any time and anywhere, A service providing method and a computer readable recording medium therefor.

Description

TECHNICAL FIELD [0001] The present invention relates to a web-based supervisory control service providing method and a computer readable recording medium for the same,

The present embodiment relates to a web-based monitoring and control service providing method and a computer-readable recording medium therefor.

The contents described in this section merely provide background information on the present embodiment and do not constitute the prior art.

SCADA (Supervisory Control and Data Acquisition) system is a computer system for monitoring and controlling processes for industry or work. It is composed of PLC (Programmable Logic Controller) which converts signals received from sensors installed in each process into digital data, Or RTU (Remote Terminal Unit) and an HMI (Human Machine Interface) system that transmits and receives data through communication with them. Generally, the monitoring control system is constituted by integrating both parts, but in general, the HMI system can be referred to as a monitoring control system.

 The HMI system includes configuration tools and graphic creation tools to configure the system. The HMI system operates graphical monitoring screens created using environment setting tools and graphic creation tools using PC-based application, plug-in technology such as ActiveX or Java on a web browser, or a dedicated application It operates using the program.

On the other hand, in the case of the existing HMI system, a separate program such as a dedicated program or a plug-in is required in order to operate the produced graphic screen, and there is a problem that it has dependency and restriction on the platform (PC, web, smart terminal, operating system) Lt; / RTI > On the user side, there is a problem that there is an irrationality that the platform should be selected according to the selected HMI system.

This embodiment minimizes dependency on the platform of the HMI system and provides a web-based surveillance service that allows the HMI system to be accessed at any time and anywhere to provide surveillance and control services if a terminal capable of operating a network- A method for providing a control service, and a computer readable recording medium therefor.

The present embodiment relates to a method for providing a web-based supervisory control service in an HMI system including an HMI server, a web application server and a web server, the method comprising: receiving data from a PLC (Programmable Logic Controller) or an RTU An environment information file storing an environment information file defining information for collection in the HMI server and the web application server; A screen information file storing step of storing a screen information file written in a web standard language and defining a GUI for the monitoring control in the web server; When the web server receives an access request signal based on a specific URL from the user terminal, transmits the screen information file corresponding to the specific URL to the user terminal so that the user terminal displays the GUI, step; And a related data transmission step of receiving the required data from the web application server and transmitting the request data to the user terminal when the web server receives a request signal for the necessary data corresponding to the screen information file from the user terminal The present invention provides a web-based monitoring and control service providing method.

According to another aspect of the present invention, there is provided a method of providing an environment for collecting data from a PLC or an RTU and an editor screen for defining a GUI for monitoring and control; Generating an environment information file defining the environment information when receiving an input signal for defining the environment information using the editor screen; Generating a screen information file defining the GUI when receiving an input signal for defining a GUI for the monitoring control using the editor screen; Converting the screen information file into a web standard language format; And storing the environment information file and the converted screen information file in a single package. The computer readable recording medium records the program.

According to the present embodiment, there is an effect that the dependence on the platform of the HMI system is minimized and the monitoring control service can be provided by accessing the HMI system at any time, if there is only a terminal capable of operating a network-based browser.

According to the present embodiment, in order to operate a GUI screen for monitoring and control by providing a GUI screen for monitoring and controlling when a user of the HMI system accesses a specific URL using a standard web browser supporting a web standard language, It is possible to monitor and control processes for industrial or work in real time without a separate program such as a program or a plug-in.

In addition, according to the present embodiment, since terminals that are always carried by most users can be used for operating the HMI system, there is an effect that utilization of the HMI system can be increased.

1 is a block diagram schematically showing functional modules of an editor program according to the present embodiment.
FIG. 2 is an exemplary diagram illustrating functions provided using the editor program according to the present embodiment.
3 is a block diagram schematically illustrating an HMI system for providing a web-based monitoring and control service according to the present embodiment.
4 is a flowchart illustrating a method for providing a web-based monitoring and control service according to the present embodiment.

Hereinafter, the present embodiment will be described in detail with reference to the accompanying drawings.

FIG. 1 is a block diagram schematically showing a functional module of an editor program according to the present embodiment. FIG. 2 is an exemplary view illustrating functions provided using an editor program according to the present embodiment. Hereinafter, functions performed by the editor program according to the present embodiment will be described with reference to FIG. 1 and FIG.

1, the function module of the editor program according to the present embodiment includes an edit screen providing unit 110, a file generating unit 120, a converting unit 130, and a package generating unit 140. [ On the other hand, the function modules of the editor program shown in Fig. 1 are realized when an editor program is executed in a central processing unit, e.g., a CPU. That is, the central processing unit implements a function of operating an editor program to sequentially call up and operate the functional modules specified above, and through this, environment setting for configuring the HMI system and editing function for defining a GUI for monitoring and controlling .

The edit screen providing unit 110 is configured to store environment information (hereinafter, referred to as environmental information) for collecting data from a PLC (Programmable Logic Controller) or RTU (Remote Terminal Unit) and a GUI ) Is provided. That is, the editing screen providing unit 110 according to the present embodiment provides an interface between a device and a user, for example, an editor screen, through which an editor program is installed, and receives an input signal from the user. Hereinafter, the functions of the editor screen according to the present embodiment will be described in detail with reference to FIGS. 2A and 2D.

FIG. 2A is an exemplary view illustrating an editor screen provided through the edit screen providing unit 110 and the resultant product produced through the editor screen.

2A, the editor screen according to the present embodiment provides a function or means for setting environment information and a GUI, and a user of the HMI system can use the editor screen to display environment information and a GUI Can be freely set. For example, a user can place an icon corresponding to a control target device provided in an actual field at a predetermined position on a screen by using an editor screen, and acquire information such as a data collection method and display form corresponding to the control target device Can be set. Thereafter, in the HMI system, data is collected from the PLC or the RTU based on the environment information set using the editor screen, and a monitoring control screen reflecting the collected data in the GUI set using the editor screen is provided to the user.

FIG. 2B is an exemplary diagram illustrating a method of setting a GUI for monitoring and controlling using an editor screen according to the present embodiment. On the other hand, FIG. 2B illustrates a display form of an object placed in the GUI, for example, a method of setting a dynamic effect.

As shown in FIG. 2B, the editor screen according to the present embodiment provides a means for setting a dynamic effect on an object placed in the GUI, and the user can thereby give a dynamic effect to a specific object placed in the GUI . For example, a user can set dynamic effects such as flicker, color change, thickness change, and the like on a specific object placed in the GUI using an editor screen. In addition, the user can additionally set an occurrence condition for the dynamic effect defined above, thereby enabling the dynamic effect to occur in the corresponding object when the specific occurrence condition is satisfied.

2C and 2D illustrate examples of setting environment information using an editor screen according to the present embodiment. FIG. 2C illustrates a method of defining tag dictionary information including the type of data collected by each PLC or each RTU in the HMI system and attribute information of collected data. In FIG. 2D, a PLC Or a method of setting the device environment information such as address information for the RTU and communication protocol specification for each PLC or RTU.

As shown in FIG. 2C, the editor screen according to the present embodiment provides a means for setting the tag dictionary information, whereby the user can define data to be collected for each PLC or each RTU in the HMI system have. For example, the user can set the type of data collected for each PLC or each RTU in the HMI system by using the editor screen, and can set data types such as analog, digital, and string attributes of the collected data have. Accordingly, the user of the HMI system according to the present embodiment can receive information required by the actual user among a plurality of data generated from various control target devices provided in the field.

As shown in FIG. 2D, the editor screen according to the present embodiment provides a means for setting device environment information, and the user can set attributes for the PLC or RTU through which data is collected. For example, a user can set a PLC or an RTU to collect data using an editor screen, and set an appropriate communication protocol standard for each device. At this time, the user can input the IP address information of the PLC or RTU through the editor screen to set PLC or RTU to collect data. Accordingly, the user of the HMI system according to the present embodiment can monitor and control the specific control target device among the various control target devices provided in the field.

Meanwhile, the editing screen providing unit 110 transmits the received input signal to the file generating unit 120 using the editor screen.

The file generation unit 120 generates an information file, for example, a file in which information corresponding to the input signal is recorded, based on the received input signal using an editor screen. Meanwhile, the file generation unit 120 according to the present embodiment confirms the received input signal using an editor screen, and generates an environment information file and a screen information file according to the confirmation result. As described above, in the present embodiment, the input signal received by the file generating unit 120 using the editor screen includes an input signal for defining environment information for collecting data from the PLC or the RTU, and a GUI for monitoring and controlling Lt; / RTI > When the input signal received from the editor screen includes contents defining environment information for collecting data from the PLC or the RTU, the file generating unit 120 generates an environment information file based on the received input signal . Also, the file generating unit 120 generates a screen information file based on the received input signal when the input signal received using the editor screen includes contents defining a GUI for monitoring and controlling.

The environment information file generated by the file generation unit 120 includes tag pre-information including the type of data collected by PLC or RTU and attribute information of collected data, address information about PLC or RTU, Device environment information including protocol specifications, and the like. In the present embodiment, the information included in the environment information file is not limited to specific information. Any information may be included as long as it is environment information on a task performed by each component in the HMI system that can be defined through an editor screen.

The screen information file generated by the file generating unit 120 includes display information such as an object corresponding to data collected from the PLC or the RTU, for example, image information of the control target equipment and effect, arrangement and the like on the object image information. In the present embodiment, the information included in the screen information file is not limited to specific information. Any information may be included as long as the information is related to a GUI, e.g., a display environment, which can be defined through an editor screen.

On the other hand, the file generation unit 120 creates an environment information file and a screen information file in a dedicated file format or XML (Extensible Markup Language).

The conversion unit 130 receives the screen information file generated from the file generation unit 120 and converts the received screen information file into a web standard language format. Meanwhile, the conversion unit 130 according to the present embodiment converts the screen information file received from the file generation unit 120 into HTML5 (HyperText Markup Language 5) format. HTML5 is the latest specification of Hyper Text Markup Language (HTML), the basic programming language for creating Web documents. HTML5 can implement the same function without installing Active X, and especially HTML5 can be implemented without a flash, silverlight, or JAVA FX, . In particular, HTML5 has the advantage that it can be compatible with all operating systems currently provided in the mobile environment.

The conversion unit 130 according to the present embodiment converts the screen information file received from the file generation unit 120 into a web standard language format, for example, HTML5 format and provides the converted screen information file to a user of the HMI system A GUI for monitoring and controlling can be provided through a method of accessing a specific URL using a standard web browser supporting a web standard language without having a separate program. Accordingly, the HMI system according to the present embodiment can provide a web-based monitoring and control service. If the user of the HMI system has a terminal capable of operating a network-based browser, the HMI system can be accessed at any time, Service can be provided. A detailed description thereof will be given in FIG. In FIG. 1, the conversion unit 130 specifies that a screen information file is converted into an HTML5 format to be provided. However, the present invention is not limited to this, and a screen information file may be converted and provided in various web standard language formats.

The package generation unit 140 stores the environment information file created using the file generation unit 120 and the converted screen information file using the conversion unit 130 as a single package. Meanwhile, the package created using the package creation unit 140 may be stored in a storage device such as a CD or USB and provided to the HMI system. Thereafter, the HMI system receives the information file stored in the corresponding package and provides web-based monitoring control service to the user of the HMI system using the information file.

3 is a block diagram schematically illustrating an HMI system for providing a web-based monitoring and control service according to the present embodiment.

The HMI system for providing the web based monitoring and control service according to the present embodiment includes a PLC 302, an RTU 304, a communication equipment 306, an HMI server 308, a web application server 310, a web server 312, a DB server 314, and a user terminal 316. Here, the components included in the HMI system are not limited thereto.

The PLC 302 and the RTU 304 are disposed at a site where the actual control target device is installed and are provided with data collected from a sensor collecting data for the control target device. Then, the PLC 302 and the RTU 304 convert the data for each control target device received from the sensor into digital data, and transmit the converted data to the corresponding HMI server 308. On the other hand, RTUs are more appropriate for wide geographic telemetry, and PLCs are more appropriate for narrow areas such as factories and production lines where physical media for system control are installed. The HMI system according to the present embodiment may further include a communication device 306 in addition to the PLC 302 and the RTU 304. The HMI system may further include a communication device 306, Lt; / RTI >

The HMI server 308 communicates with the PLC 302, the RTU 304, and the communication equipment 306, thereby transmitting and receiving data to and from each device. Although only one HMI server 308 in the HMI system is illustrated in FIG. 1, a plurality of HMI servers may be provided. Meanwhile, each HMI server communicates with the specific PLC 302, the RTU 304, and the communication equipment 306, and transmits and receives data to and from the corresponding devices.

The HMI server 308 according to the present embodiment stores an environment information file generated using an editor program and stores the environment information file in a specific communication with the specific PLC 302, the RTU 304, Performs communication according to the protocol specification, and receives specific data. More specifically, the administrator of the HMI server 308 receives the package created using the editor program in advance and receives the information included in the package And stores the environment information file by copying the environment information file among the files into the service directory in the HMI server 308. [

Meanwhile, the HMI server 308 according to the present embodiment is provided with an HMI drive program, e.g., a run-time program, for analyzing and driving the environment information file. The HMI server 308 analyzes and drives the environment information file using the provided runtime program and collects data from the PLC 302, the RTU 304, and the communication equipment 306 based on the environment information file. The runtime program may be installed in advance in the HMI server 308 and may be provided in the form of a package together with the environment information file. When the HMI server 308 receives a request signal for data from the web application server 310, the HMI server 308 calculates data corresponding to the request signal and transmits the calculated data to the web application server 310 using the network. Lt; / RTI > Similarly, the HMI server 308 can transmit the collected data to the web application server 310 in a specific form based on the environment information file.

Meanwhile, the environment information file stored in the HMI server 308 according to the present embodiment may include event propagation information defining an event generation condition, an event propagation object, an event propagation method, and event propagation contents. At this time, the event propagation object means information about a user terminal receiving information on an event when an event occurs, the event propagation method means an event message transmission method such as SMS or Email, For example, a screen ID, tag ID list information corresponding to an event, and the like.

The HMI server 308 receives the event propagation information included in the environment information file and the event information corresponding to the event propagation information based on the data collected from the PLC 302, the RTU 304 and the communication equipment 306 I.e., a URL (Uniform Resource Locator), for providing event occurrence information. Thereafter, the HMI server 308 transmits the generated URL to the user terminal corresponding to the event propagation target, and the user of the user terminal provided with the URL accesses the corresponding URL using a standard web browser, Information can be confirmed. To describe more specifically the form in which the event occurrence information is provided using the URL, when a screen ID in the URL is defined, a GUI corresponding to the corresponding screen ID is provided in the predefined GUI, and a tag ID list If defined, a GUI corresponding to the corresponding tag ID list among the predefined GUIs is provided. The URL for providing event occurrence information according to the present embodiment may be generated in the form of, for example, http: // {System IP or Domain} / events / {Status ID} Message Propagation (SMS or Email).

The web application server 310 communicates with each HMI server 308 provided in the HMI system so that each HMI server 308 communicates with the corresponding PLC 302, And receives the data received from the control unit 306. On the other hand, the web application server 310 stores the data received from each HMI server 308 according to HMI servers, and provides the stored data.

The web application server 310 according to the present embodiment likewise stores environment information files generated using an editor program and stores the environment information files on the basis of the specific PLC 302, the RTU 304, the communication equipment 306, And receives data collected from the HMI server 308 that performs communication and receives specific data. The form in which the environment information file in the web application server 310 is stored is the same as the form in which the environment information file in the HMI server 308 is stored, and a detailed description thereof will be omitted.

When the web application server 310 receives a request signal for specific data from the user terminal 316 via the web server 312, the web application server 310 transmits data corresponding to the request signal to the user terminal 316 via the web server 312, (316). At this time, the request signal for the specific data transmitted from the user terminal 316 is not necessarily a request signal for the required data calculated based on the screen information file received from the web server by the user terminal 316.

Similarly, the web application server 310 according to the present embodiment is provided with a run-time program, for example, an HMI drive program for analyzing and driving the environment information file. The web application server 310 analyzes and drives the environment information file using the provided run-time program, and collects data from each HMI server 308 based on the environment information file. The form of the runtime program in the web application server 310 is the same as that of the runtime program in the HMI server 308 described above, and a detailed description thereof will be omitted.

When the web server 312 receives the connection request signal by the specific URL from the user terminal 316, the web server 312 transmits the screen information file corresponding to the specific URL to the user terminal 316. At this time, the specific URL may be a URL accessible to the HMI system provided to users in advance, or may be a URL for providing event occurrence information generated from the HMI server 308. [ Meanwhile, the web server 312 according to the present embodiment stores a screen information file generated using an editor program, and when receiving a connection request signal by a specific URL, the web server 312 displays a screen corresponding to a specific URL And transmits the information file to the user terminal 316. The form in which the screen information file in the web server 312 is stored is the same as the form in which the environment information file in the HMI server 308 and the web application server 310 are stored, and a detailed description thereof will be omitted. Meanwhile, the web server 312 according to the present embodiment stores a screen information file created in a web standard language, for example, HTML5 format, and when receiving a connection request signal by a specific URL from the user terminal 316, The user terminal 316 can transmit the screen information file corresponding to the screen information file to the user terminal 316 so that the user terminal 316 can access the standard web browser 320 supporting the web standard language without having a separate program such as a plug- To provide a GUI for predefined monitoring and control through a method of accessing a specific URL using a URL. Accordingly, the user of the HMI system according to the present embodiment can access the HMI system and receive the web-based monitoring and control service anytime and anywhere if only a terminal capable of operating a network-based browser exists.

The Web server 312 according to the present embodiment is provided with a screen drive program, e.g., a JavaScript program, for analyzing and driving the screen information file. The web server 312 analyzes and drives the screen information file using the provided JavaScript program and transmits a screen information file corresponding to the specific URL to the user terminal 316 based on the screen information file.

When the web server 312 receives a request signal for necessary data corresponding to the screen information file from the user terminal 316, the web server 312 transmits a request signal for the necessary data from the web application server 310. Then, the web server 312 receives the necessary data from the web application server 310 and transmits it to the user terminal 316. The user terminal 316 provides a surveillance control screen in which necessary data is reflected in a predefined GUI using the screen information file received from the web server 312 and necessary data.

The DB server 314 receives information on data collected in the HMI server 308 and the web application server 310, and generates and stores history information on the data. Then, the DB server 314 provides stored history information as needed.

The user terminal 316 refers to a terminal capable of transmitting and receiving various data via a network in response to a key operation or a command of a user. The user terminal 316 includes a tablet PC, a laptop, a personal computer A personal computer, a personal computer, a smart phone, a personal digital assistant (PDA), and a mobile communication terminal.

The user terminal 316 according to the present embodiment is provided with a web-based monitoring and control service, and monitors and controls processes for an industry or a work. Hereinafter, a process in which the user terminal 316 according to the present embodiment receives a web-based monitoring and control service will be described. The user terminal 316 accesses a specific URL using a standard web browser supporting a web standard language and receives a screen information file corresponding to a specific URL from the web server 312 through the standard URL.

The user terminal 316 analyzes the screen information file using a screen drive program, for example, a JavaScript program, provided in the user terminal 316, and calculates information on necessary data corresponding to the screen information file.

The user terminal 316 transmits a request signal for the calculated necessary data to the web server 312 and receives the necessary data from the web server 312. At this time, the web server 312 transmits a request signal for the necessary data to the web application server 310 and receives the necessary data from the web application server 310.

The user terminal 316 provides a surveillance control screen in which necessary data is reflected in a predefined GUI using the screen information file received from the web server 312 and necessary data.

The user terminal 316 transmits a control command to the web server 312 and the web application server 314 when receiving a control command for a specific tag (object) (310) to the HMI server (308). The HMI server 308 operates to control the controlled device by the PLC 302 or the RTU 304 by transmitting a control command to the corresponding PLC 302 or RTU 304. [ On the other hand, when receiving the control result of the specific control target device corresponding to the control command from the PLC 302 or the RTU 304, the HMI server 308 transmits the control result to the web application server 310 and the web server 312 And transmits it to the user terminal 316. The user terminal 316 reflects the control result on the monitor control screen and provides the control result.

Accordingly, the HMI system according to the present embodiment minimizes the dependence on the platform, and if there is a terminal capable of operating a network-based browser, the HMI system can be accessed anytime and anywhere to receive the monitoring and control service .

In addition, the HMI system according to the present embodiment has an effect that the utilization of the HMI system can be increased since most users can always use the portable terminal for operating the HMI system.

4 is a flowchart illustrating a method for providing a web-based monitoring and control service according to the present embodiment.

The HMI server 308 transmits a data request signal to the PLC 302 via the network (S402), and receives data corresponding to the data request signal from the PLC 302 (S404). In step S402, the HMI server 308 has an environment information file generated using an editor program, and a runtime program for analyzing and running the environment information file, and analyzes and drives the environment information file using the runtime program. Thereafter, the HMI server 308 transmits a data request signal to the predefined PLC 302 based on the analyzed and driven environment information file, and receives data corresponding to the data request signal from the PLC 302. On the other hand, the environment information file includes tag advance information including the type of data collected by PLC or RTU, attribute information of collected data, address information about PLC or RTU, device environment information including PLC-specific or RTU- And the like. In FIG. 4, the HMI server 308 transmits a data request signal to the PLC 302, but the present invention is not limited thereto. For example, the HMI server 308 may transmit a data request signal to various data collecting devices such as the RTU 304 and the communication equipment 306 based on the environment information file.

The web application server 310 transmits a data request signal to the HMI server 308 via the network in step S406 and receives data corresponding to the data request signal from the HMI server 308 in step S408. In step S406, the web application server 310 includes an environment information file generated using an editor program and a runtime program for analyzing and running the environment information file. The environment information file is analyzed and driven using the runtime program . Thereafter, the web application server 310 transmits a data request signal to the HMI server 308 receiving data from the predefined PLC 302 based on the analyzed and driven environmental information file, and transmits the data request signal from the HMI server 308 And receives data corresponding to the data request signal.

In operation S410, the web server 312 transmits a screen information file corresponding to the specific URL to the user terminal 310 in operation S412. At this time, the specific URL may be a URL accessible to the HMI system provided to users in advance, or may be a URL for providing event occurrence information generated from the HMI server 308. [ To this end, the HMI server 308 generates an event for providing event occurrence information when the occurrence of an event corresponding to the event propagation information is recognized based on the event propagation information defined in the environment information file and the data collected from the PLC 302 Message, that is, a URL, and transmits the message to the user terminal 310. The web server 312 according to the present embodiment includes a screen information file generated using an editor program and a JavaScript program for analyzing and running the screen information file. . The web server 312 then transmits the screen information file corresponding to the specific URL to the user terminal 316 based on the analyzed and driven screen information file when receiving the connection request signal based on the specific URL.

The user terminal 316 calculates necessary data based on the screen information file received from step S412, and transmits a data request signal for the calculated necessary data to the web server 312 (S414). In step S414, the user terminal 316 has a JavaScript program for analyzing and running the screen information file. By analyzing and driving the screen information file using the provided JavaScript program, And calculates information about the data.

The web server 312 transmits a data request signal for the necessary data to the web application server 310 (S416), and receives the necessary data corresponding to the data request signal from the web application server 310 (S418).

The web server 312 transmits the necessary data received in step S418 to the user terminal 316 (S420). The user terminal 316 provides a surveillance control screen in which necessary data is reflected in a predefined GUI using the screen information file received in step S412 and the necessary data received in step S418.

The user terminal 316 transmits a control command to the web server 312 and the web application server 314 when receiving a control command for a specific tag (object) To the HMI server 308 (S422, S424, and S426).

The HMI server 308 transmits a control command to the corresponding PLC 302, thereby operating the PLC 302 to control the control target apparatus based on the control command (S428).

When receiving the control result of the control target device corresponding to the control command from the PLC 302, the HMI server 308 transmits the control result to the user terminal 316 via the web application server 310 and the web server 312 (S430, S432, S434, S436). The user terminal 316 reflects the received control result on the monitor control screen and provides it.

Although it is described in FIG. 4 that steps S402 to S436 are sequentially executed, it is only described as an example of the technical idea of the present embodiment. If a person skilled in the art is familiar with the present invention, It is to be understood that various changes and modifications may be made to the invention without departing from the essential characteristics thereof, such as by changing the order described in FIG. 4 or by executing one or more of steps S402 through S436 in parallel, But is not limited thereto. For example, in the web-based monitoring and control service providing method according to the present embodiment, an environment information file defining information for collecting data from the PLC 302 or the RTU 304 before the step S402 is transmitted to the HMI server 308 and the web application And a step of storing the screen information file in the web server 312, which is created in the web standard language and defines a GUI for monitoring and control, in the web server 312.

The foregoing description is merely illustrative of the technical idea of the present invention, and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are intended to illustrate rather than limit the scope of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

110: edit screen providing unit 120: file generating unit
130: conversion unit 140: package generation unit
302: PLC 304: RTU
306: Communication equipment 308: HMI server
310: Web application server 312: Web server
314: DB server 316: User terminal

Claims (10)

A method for providing a web based supervisory control service in an HMI system including an HMI server, a web application server and a web server,
An environment information file storing step of storing an environment information file defining information for collecting data from a programmable logic controller (PLC) or an RTU (Remote Terminal Unit) in the HMI server and the web application server;
A screen information file storing step of storing a screen information file written in a web standard language and defining a GUI for the monitoring control in the web server;
When the web server receives an access request signal based on a specific URL from the user terminal, transmits the screen information file corresponding to the specific URL to the user terminal so that the user terminal displays the GUI, step;
A related data transmission step of receiving the necessary data from the web application server and transmitting the request data to the user terminal when the web server receives a request signal for necessary data corresponding to the screen information file from the user terminal; And
Transmitting the control command to the PLC or the RTU via the web application server and the HMI server when the web server receives a control command for the specific control target apparatus from the user terminal
Based monitoring control service. The method according to claim 1,
Wherein the environment information file is written in an Extensible Markup Language (XML) format, and the screen information file is written in HTML5 (HyperText Markup Language 5) format. The method according to claim 1,
The environmental information file includes:
Tag dictionary information including the kind of data collected by the PLC or the RTU and attribute information of the collected data; And
The device environment information including the address information of the PLC or the RTU and the PLC-specific or the RTU-
Based monitoring control service. The method according to claim 1,
The screen information file includes:
The object image information corresponding to the data, and the display information for the object image information. The method according to claim 1,
The HMI server collecting the data based on the environment information file and transmitting the collected data to the web application server so that the web application server stores and provides the collected data Based monitoring control service. delete The method according to claim 1,
When the HMI server receives the control result of the specific control target device corresponding to the control command from the PLC or the RTU, transmitting the control result to the user terminal via the web application server and the web server Wherein the web-based supervisory control service is a web-based supervisory control service. The method according to claim 1,
The environmental information file includes:
An event occurrence condition, an event propagation object, an event propagation method, and event propagation information,
The HMI server generates a URL for providing event occurrence information when the occurrence of an event corresponding to the event propagation information is recognized based on the event propagation information and the data collected from the PLC or the RTU, To a user terminal corresponding to the web-based monitoring and control service. 9. The method of claim 8,
Transmitting a corresponding screen information file corresponding to the URL to the user terminal corresponding to the event propagation object when the web server receives the connection request signal by the URL from the user terminal corresponding to the event propagation object; And
When the web server receives a request signal for necessary data corresponding to the corresponding screen information file from the user terminal corresponding to the event propagation object, the web server receives the necessary data corresponding to the corresponding screen information file from the web application server To the user terminal corresponding to the event propagation object
Wherein the web-based supervisory control service is a web-based supervisory control service. delete

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