KR101429738B1 - Apparatus for monitoring and controlling environment foundational facilities - Google Patents

Abstract

An apparatus for collectively monitoring and controlling environment foundational facilities according to the present invention includes first and second master modules, each of which independently receives state information from a PLC control device; and an HMI module which manages the state information input from the first and second master modules, and outputs the state information corresponding to a request signal to an image display means when the request signal is input thereto, wherein the first master module includes an information request unit for requesting block information to the second master module; a selecting unit for selecting first block information that is block information of itself having PLC ID information and block address information, wherein the PLC ID information is identical to second block information that is block information input from the second master module; a control unit which compares update time information included in the first block information with update time information included in the second block information, and request block state information, which is state information corresponding to the block address information of the second block information, to the second master module when the update time information of the second block information is late by a reference time or more; and an information update unit which updates the state information of itself with the input block state information and updates update time information of the block information of itself.

Description

[0001] APPARATUS FOR MONITORING AND CONTROLLING ENVIRONMENT FOUNDATIONAL FACILITIES [0002]

More particularly, the present invention relates to an environment monitoring system and a monitoring system for an environment basic facility, and more particularly, Data synchronization can be carried out selectively by using block information representing objectized state information on the basis of the PLC controller device and the field terminal (I / O device), thereby realizing more accurate and quick data synchronization And an integrated monitoring and control apparatus for an infrastructure.

Environmental facilities such as a sewer monitoring system, a water supply flow rate enhancement system, a water supply network management system, and a sewage terminal treatment facility are usually equipped with a measuring device for measuring various state information on the site, a driving device driven by a control signal of a central control system And so on.

These devices are communicably connected to the PLC controller device. The PLC controller device receives status information from various measuring devices, driving devices, and the like located in its control area and responds to request signals from the central integrated monitoring control device or control station And transmits the information or data to be transmitted.

These integrated monitoring and control devices and control stations are composed of HMI (Human Machine Interface) software that is operated by the integrated management entity such as central control room and control room. It collects various status information of the field, It performs the function to display to the interface environment.

Generally, the integrated supervisory control device transmits and receives data and information from a plurality of PLC controller devices installed at a remote place. In order to operate the data communication more stably, a plurality of masters Module, and these master modules perform mutual data identification and synchronization processes.

However, conventionally used data synchronization processing employs a monitoring method in which data stored in each of a plurality of master modules is individually collated and collated. This method is highly reliable in terms of verifying data substantially accurately However, since the entire data must be detected and verified, the efficiency is considerably low in terms of processing speed.

In recent systems where the size and capacity of data are becoming increasingly large, such a problem becomes more serious, leading to problems such as requiring expensive hardware equipment for increasing the processing speed.

In particular, in the case of the environment basic facility to which the present invention is applied, although communication is performed in connection with various field terminals, data is not randomly generated due to the characteristics of the environment basic facility, Since the size and capacity of transmission data are not changed variably due to unspecified conditions, the efficiency of data synchronization by the conventional monitoring method is extremely low.

Korean Patent Laid-Open Publication No. 2001-0102240 also discloses a duplicated PLC system and its data synchronization method, but this document relates to a method of extracting update data and storing it in a cache memory and then synchronizing the data. The efficiency is still low in the field to which the present invention such as an environmental basic facility is applied. Therefore, there is a great need to implement a method such as data synchronization that can be optimized for the characteristics of state information on environment facilities.

The present invention has been developed in order to solve the above problems, and it is an object of the present invention to implement data duplication through a plurality of master modules and to provide status information of various field terminals received from the PLC controller device to PLC And provides the integrated monitoring and control device optimized for the characteristics of the environment basic facility in which the state information transmission is repeatedly and continuously performed without significant change in the data content and size by generating and using the block information representing the individual objects separately It has its purpose.

Other objects and advantages of the present invention will become apparent from the following description, and it will be apparent from the description of the embodiments of the present invention. Further, the objects and advantages of the present invention can be realized by a combination of the constitution shown in the claims and the constitution thereof.

In order to achieve the above object, an integrated environmental monitoring system of the present invention includes a plurality of on-site terminals installed in a remote location and communicably connected to a PLC controller device for receiving status information, 1. An integrated monitoring control apparatus for receiving transmitted information, comprising: a communication unit for receiving status information from the PLC controller apparatus; A storage unit for updating and storing the status information; And PLC ID information which is the ID information of the PLC controller device transmitting the status information, block address information which is information on the start address where the status information is stored and the length of the stored data, and update time information in which the status information is updated First and second master modules each including a block information generation unit for generating and storing block information, the first and second master modules receiving the status information independently from the PLC controller device through a redundancy line; And an HMI module for managing status information input from the first or second master module and outputting status information corresponding to the request signal to a screen display unit when a request signal is input, An information request unit for requesting block information from the second master module; A selector for selecting first block information, which is its own block information, having the same PLC ID information and block address information as the second block information which is the block information inputted from the second master module; When the update time information of the second block information is more recent than the reference time by comparing the update time information included in the first block information with the update time information included in the second block information, A controller for requesting and inputting block state information, which is state information corresponding to address information, to the second master module; And an information updating unit updating the inputted block state information with its own state information and updating the update time information of its own block information.

For the implementation of the more preferred embodiment, the status information transmitted from the PLC controller device to each of the communication units of the first and second master modules includes information on the start address and the length of the stored data in which the status information is stored Wherein each of the first and second master modules has a data frame in which the start address and the stored data length included in the data frame do not correspond to the block information stored in the block information generator, And an alarm information unit for generating and transmitting the alarm information.

The control unit of the first master module of the present invention compares the update time information included in the first block information with the update time information included in the second block information, The second master module is configured to transmit an update control signal including status information corresponding to the block address information of the first block information to the second master module, And an information updating unit updating the state information included in the update control signal with its own state information and updating the update time information of its own block information.

If the update time information included in the one or more block information stored in the block information generating unit of the first and second master modules of the present invention exceeds the reference elapsed time based on the current time, And a validity judgment unit for invalidating the corresponding state information.

The block information generator of each of the first and second master modules of the present invention may be configured to generate and store block information including the number of times information of the state information stored in the storage unit of the corresponding master module is read, In this case, the validity determination unit of each of the first and second master modules may determine status information corresponding to the corresponding block information when the number of times information included in one or more pieces of block information stored in the block information generating unit of the first and second master modules exceeds the reference number of times And may be configured to invalidate.

According to the present invention, the integrated monitoring and control device of the environmental infrastructure can effectively synchronize the data of the state information of the environment basic facility and the environment basic facility with the information of the redundant communication optimized for the environment infrastructure have.

The present invention generates block information that represents state information having the same characteristics without performing data synchronization on state information or data itself as an object object, and synchronizes data synchronization with state information through the contrast of block information generated for each master module It is possible to provide an effect of drastically shortening the processing time unnecessary for data synchronization.

Further, the present invention employs processing for judging the validity of data on the basis of the elapsed time or the number of read times of the block information held by each master module, thereby maintaining the latest data, So that the latest data can be shared.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate preferred embodiments of the invention and, together with the detailed description of the invention given below, serve to better understand the technical idea of the invention, And shall not be construed as limited to such matters.
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a diagram generally illustrating an integrated supervisory control apparatus and related configuration according to a preferred embodiment of the present invention;
2 and 3 are block diagrams showing detailed configurations of first and second mast modules of the integrated supervisory control apparatus according to a preferred embodiment of the present invention;
4 is a diagram illustrating block information according to an exemplary embodiment of the present invention,
FIG. 5 is a flowchart illustrating a data synchronization process performed according to a preferred embodiment of the present invention. FIG.
FIG. 6 is a flowchart illustrating a data validity determination process performed according to another embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary terms, and the inventor should appropriately interpret the concepts of the terms appropriately It should be interpreted in accordance with the meaning and concept consistent with the technical idea of the present invention based on the principle that it can be defined.

Therefore, the embodiments described in the present specification and the configurations shown in the drawings are merely the most preferred embodiments of the present invention and are not intended to represent all of the technical ideas of the present invention. Therefore, various equivalents It should be understood that water and variations may be present.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a diagram generally showing an integrated supervisory control apparatus and related configurations according to a preferred embodiment of the present invention; FIG. As shown in FIG. 1, the integrated supervisory control apparatus 1000 of the present invention is communicably connected to a PLC controller apparatus 30 installed in the field through a medium of a communication network 5.

The integrated supervisory control apparatus 1000 of the present invention includes first and second master modules 100 and 200, an HMI module 300, a screen display unit 400, and a DB unit 500 as shown in FIG. And the like.

The HMI module 300 is a module in which an HMI (Human Machine Interface) is implemented as is well known to those of ordinary skill in the art and includes a variety of fields transmitted from the first or second master module 100, The state information is managed through appropriate data processing and the like, and the information input from the manager and the state information of the field are stored in the DB unit 400. When a request signal is input from the administrator (user), status information To the screen display means 400 in a user-oriented interface environment.

The integrated supervisory control apparatus 1000 of the present invention performs data communication with a PLC controller apparatus 30 that can be installed in the field of a remote environment facility through a communication network 5. [

The communication network 5 is a network that enables communication between the integrated supervisory control apparatus 1000 and the PLC controller apparatus 30 of the present invention and does not distinguish between wired and wireless communication as long as data can be transmitted and received. WCDMA, LTE, and the like.

The PLC controller 30 communicably connected to the integrated supervisory control apparatus 1000 of the present invention is installed in the field and measures or senses various parameters and the like for various environmental facilities on the site, And is connected to a field terminal 50 that is drive-controlled on the basis of a control signal received from the field terminal 50.

The measuring device 50-1, the driving device 50-2 and the valve device 50-m shown in FIG. 1 are merely examples, and the field terminal 50 may have various forms It is a matter of course that the device can be made of.

The PLC controller device 30 and the field terminal 50 communicably connected to the PLC controller device 30 may be referred to as a remote control station (RCS) And may be composed of a plurality of RCSs 20-1, 20-2, ..., 20-n.

The integrated supervisory control apparatus 1000 and the PLC controller apparatus 30 are communicably connected via independent dual lines for stable operation of data transmission. In order to effectively perform the integrated supervisory control apparatus 1000 and the PLC controller apparatus 30, The control apparatus 1000 is provided with two master modules 100 and 200 as shown in FIG. It is obvious that a master module corresponding to the number of independent lines or communication lines can be provided in the integrated supervisory control apparatus 1000.

Hereinafter, the master modules 100 and 200 of the present invention will be described in detail with reference to FIGS. 2 and 3. FIG. As described above, the present invention realizes communication through a redundant line in order to effectively cope with various communication disturbances such as communication short circuit, transmission noise, communication delay, and the like.

In order to realize such duplicated communication, the integrated supervisory control apparatus 1000 of the present invention includes two master modules 100 and 200 that perform mutually corresponding functions. Since the master modules 100 and 200 are independently operated but are basically modules for performing data transmission and reception and data processing between the HMI module 300 and the PLC controller device 30, . Therefore, the contents of the master module below can be common to both master modules 100 and 200 unless otherwise stated.

As will be described later, the data synchronization processing between the master modules 100 and 200 is relatively divided into the actors. Therefore, in order to improve the efficiency of the description, the two master modules 100 and 200 are relatively separated The first master module 100 and the second master module 200 may be referred to as a first master module 100 and a second master module 200, respectively.

The first and second master modules 100 and 200 of the present invention include communication units 110 and 210, storage units 120 and 220, and a block information generation unit 130, as shown in FIGS. .

The communication units 110 and 210 perform the function of receiving the status information of the field terminal 50 installed in the remote place from the PLC controller device 30 as described above and the first master module 100 and the second The first communication unit 110 and the second communication unit 210 of the master module 200 independently receive the status information through the redundancy lines of the A line and the B line illustrated in FIGS. 2 and 3 (S410) The storage units 120 and 220 update and store the status information transmitted through the communication units 110 and 210 (S410).

The block information generators 130 and 230 of the present invention generate and store block information (S420). As shown in FIG. 4, the block information includes the ID information of the corresponding block, the PLC ID information which is the ID information of the PLC controller 30 transmitting the status information, the start address where the status information is stored and the length of the stored data And update time information in which the status information is updated.

Each time the status information is transmitted from the PLC controller device 30, the block information is stored in the predetermined memory using the same memory start address and length information, and the stored time information is also updated and stored .

Since the respective status information is transmitted by the redundancy line as described above, the block information generators 130 and 230 of the first and second master modules 100 and 200 also generate the block information independently of each other . If there are no faults or accidents such as communication lines and internal algorithm driving, the block information generators 130 and 230 generate and store the same block information.

The status information of the on-site terminal transmitted through the PLC controller device 30 controlling the on-site terminal can have a characteristic of being constant in size, content, etc. according to the role performed by the on-site terminal. That is, the field terminal for measuring the hydraulic pressure will continuously transmit the measured hydraulic pressure data at a predetermined cycle, and the sensor for sensing the RPM of the motor also has the characteristic of transmitting the sensed RPM information at a predetermined cycle.

 Therefore, it is preferable that this block information is generated so as to be distinguished for each of the field terminal 50 and the PLC controller 30 which controls the field terminal 50. Of course, if there is a case where the nature or kind of the measurement data measured by one field terminal 50 is different, it is preferable to generate the block information so as to be classified by the nature and the type of the measurement data.

That is, it is preferable that the block information is generated and stored such that a set of state data having a constant and time invariant is a unit.

Hereinafter, the data synchronization process between the master modules 100 and 200 will be described in detail using block information generated by the above-described method.

In the following description, it is assumed that the first master module 100 is a master module that performs a main function of data synchronization, and the second master module 200 performs a sub function of organically interlocking with the first master module 100 It is assumed to be a master module. It should be understood that the first master module and the second master module are logically divided to distinguish between the main function and the sub function, but it is obvious that the specific master module is not separated from the absolute and physical standard.

 When the block information is generated and stored, the first information requesting unit 140 of the first master module of the present invention requests block information from the second master module 200 at step S430. As described above, the block information can be generated separately for each field terminal or each PLC controller device 30, and therefore, the block information can be composed of a plurality of blocks. (N) is set to a natural number equal to or greater than 1 (S425) and the first (nth) block information is set to the second master module 100 as illustrated in FIG. 5, And after the completion of the subsequent processing, n is incremented by 1 (S490), and block information of the next order can be requested. According to the embodiment, in order to increase the efficiency of the information update, the block information may be requested on the basis of the old update time of the status information or the block information stored in the first master module 100.

When the block information is input from the second master module 200 as a feedback to the block information request, the first selector 150 of the first master module 100 outputs the same block information as the second block information In step S440, first block information that is its own block information having the PLC address information, the PLC address information, and the block address information (the storage start address and the length information of the storage data).

The block information stored in the first master module 100 is referred to as first block information and the block information transmitted from the second master module 200 is referred to as second block information to distinguish corresponding block information.

When the selection of the first block information is completed, the first controller 160 of the first master module 100 compares the update time information included in the first block information with the update time information included in the second block information (S450). If the update time information of the second block information is more recent than the reference time, block state information, which is state information corresponding to the block address information of the second block information, is requested to the second master module (S460).

Thereafter, when the block state information is received from the second master module 200, the first information updating unit 170 updates the received block state information to its own state information, And updates the update time information (S470).

The reference time is preferably set to a time that can be regarded as a failure or a delay of data transmission in consideration of a period in which data is transmitted from the PLC controller device 30. In an embodiment that reflects immediacy, It can be set to a small size.

The present invention eliminates the conventional method of directly scanning and comparing data such as stored status information and updating the time information of the block information representing the stored status information so that both master modules 100 and 200 And is configured to hold state information. According to the embodiment, it is possible to omit the synchronization or sharing process of the status information itself if it is determined that the update time information of both status information are mutually correlated within a predetermined reference time.

If a problem occurs in the A-line communication network between the first master module 100 and the PLC controller device 30 and the specific state information can not be transmitted in the corresponding period, the update time of the first block information representing the specific state information The information will have earlier (past) information than the update time information of the corresponding second block information of the corresponding second master module 200.

In this case, if the specific state information stored in the storage unit 120 of the first master module 100 is not the latest information, the corresponding state information is requested to the second master module 200 as described above , And transmits the status information (referred to as block status information) to its own status information using the block address information (start address and data length) when the corresponding status information is transmitted (S470).

If the update time information of the first block information is newer than the update time information of the second block information by more than the reference time in step 450, the first controller 160 of the first master module 100, Transmits an update control signal including status information corresponding to the block address information of the first block information to the second master module (S465).

The second information update unit 270 of the second master module 200 updates the state information included in the update control signal with its own state information and updates the update time information of its own block information.

The data synchronization between the first and second master modules 100 and 200 may be configured to be continued in sequence or repeatedly if the processing end condition such as the data synchronization stop request signal input is not satisfied (S480).

The state information transmitted from the PLC controller device 30 to the communication units 110 and 210 of the first and second master modules 100 and 200 may be stored The start address information, the length information of the stored data, and the status information content data.

The first and second alarm information units 180 and 280 of the first and second master modules 100 and 200 may store the start address and the start address included in the data frame, If the information on the data length does not correspond to the block information stored in the first and second block information generators 130 and 230, generates and transmits alarm information.

In this manner, if the transmitted data frame is configured to correspond to the structure of the block information described above, the formal verification of the transmitted state information can be implemented more quickly and accurately, and the error in the operation algorithm of the PLC controller apparatus can be quickly corrected .

Hereinafter, another preferred embodiment of the present invention will be described in detail with reference to FIG.

First, the first and second block information generators 130 and 230 of the first and second master modules 100 and 200 of the present invention include a storage module corresponding to a master module of the first and second master modules 100 and 200, And further adds the read out number information of the status information stored in the first and second storage units 120 and 130 to generate and store the block information.

The first and second validity determination units 190 and 290 of the first and second master modules 100 and 200 of the present invention check the update time information included in the block information of the first and second master modules 100 and 200, It is determined whether the update time information included in the one or more pieces of block information stored in the block information generation unit exceeds the reference elapsed time based on the current time in operation S530. If the update time information exceeds the reference elapsed time, (S555). ≪ / RTI >

The reference elapsed time can be set based on the time when the state information is stored for a considerable time due to various problems such as communication, operation algorithm error, etc., and can not be regarded as valid data.

Since the block information further includes the number of times the status information is read as described above, the first and second validity determination units 190 and 290 may determine the number of times the status information is stored in the block information generation unit 130 or 230 If it is determined that the number information included in the block information exceeds the reference number information (S550), the status information corresponding to the block information is invalidated (S555).

The fact that the number of read times information is large means that the same data is repeatedly read out without change. Therefore, it means that the data is not updated properly due to factors such as communication failure, error, etc. Therefore, It is desirable that the corresponding state information is not regarded as valid data. The reference number of times information is preferably set variably in consideration of the time period in which the status information is read, the number of normal readings, and the system environment.

A method of invalidating the state information can be applied in various ways. Typically, a method of deleting the state information stored in the corresponding address and an invalid flag information corresponding to the state data are generated and alarming ).

In this case, processing steps (S510 and S570) for sequentially and step-by-step checking from the first block information to the last block information may be added. Further, the state information stored in the past based on the update time information of the block information And can be configured in such a way as to be checked in advance and in a random order.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not to be limited to the details thereof and that various changes and modifications will be apparent to those skilled in the art. And various modifications and variations are possible within the scope of the appended claims.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are intended to provide further explanation of the invention as claimed. It should be understood that various modifications may be made in the ordinary skill in the art.

1000: Integrated monitoring control device
100 (200): first (second) master module
110 (210): first (second) communication unit 120 (220): first (second)
130 (230): First (second) block information generator 140 (240): The first (second)
150 (250): first (second) selector 160 (260): first (second)
170 (270): first (second) information updating unit 180 (280): first (second)
190 (290): first (second) validity judgment unit

Claims (5)

1. An integrated monitoring and control apparatus communicably connected to a PLC controller apparatus that receives status information from a plurality of field terminals installed at a remote location and receives the status information collected by the PLC controller apparatus,
A communication unit for receiving status information from the PLC controller device; A storage unit for updating and storing the status information; And PLC ID information which is the ID information of the PLC controller device transmitting the status information, block address information which is information on the start address where the status information is stored and the length of the stored data, and update time information in which the status information is updated First and second master modules each including a block information generation unit for generating and storing block information, the first and second master modules receiving the status information independently from the PLC controller device through a redundancy line; And
And an HMI module for managing status information input from the first or second master module and outputting status information corresponding to the request signal to the screen display means when a request signal is input,
Wherein the first master module comprises:
An information request unit for requesting block information from the second master module;
A selector for selecting first block information, which is its own block information, having the same PLC ID information and block address information as the second block information which is the block information inputted from the second master module;
When the update time information of the second block information is more recent than the reference time by comparing the update time information included in the first block information with the update time information included in the second block information, A controller for requesting and inputting block state information, which is state information corresponding to address information, to the second master module; And
And an information updating unit updating the inputted block state information with its own state information and updating the update time information of its own block information. The method as claimed in claim 1, wherein the status information transmitted from the PLC controller device to the communication units of the first and second master modules,
A start address for storing the status information, and a length of the stored data,
Wherein each of the first and second master modules comprises:
And an alarm information unit for generating and transmitting alarm information when the information on the start address and the stored data length included in the data frame does not correspond to the block information stored in the block information generating unit. Integrated monitoring and control device. The apparatus of claim 1, wherein the controller of the first master module comprises:
The update time information included in the first block information is compared with the update time information included in the second block information, and when the update time information of the first block information is more recent than the reference time, An update control signal including status information corresponding to address information is transmitted to the second master module,
Wherein the second master module comprises:
Further comprising an information updating unit updating the state information included in the update control signal with its own state information and updating the update time information of the own block information.
2. The method of claim 1, wherein each of the first and second master modules comprises:
And an invalidation unit for invalidating the state information corresponding to the block information when the update time information included in the at least one block information stored in the block information generating unit of the own block exceeds the reference elapsed time based on the current time Integrated monitoring and control system for environmental facilities. 5. The apparatus of claim 4, wherein the block information generator of each of the first and second master modules comprises:
Generates and stores block information including the number-of-times information in which the status information stored in the storage unit of the corresponding master module is read,
The validity determination unit of each of the first and second master modules may determine,
Wherein the control unit invalidates the status information corresponding to the block information when the number information included in the one or more block information stored in the block information generating unit exceeds the reference number information.

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