KR101465720B1 - Method for managing load of controller and controller - Google Patents

Method for managing load of controller and controller Download PDF

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KR101465720B1
KR101465720B1 KR1020130005370A KR20130005370A KR101465720B1 KR 101465720 B1 KR101465720 B1 KR 101465720B1 KR 1020130005370 A KR1020130005370 A KR 1020130005370A KR 20130005370 A KR20130005370 A KR 20130005370A KR 101465720 B1 KR101465720 B1 KR 101465720B1
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data
load
controller
threshold value
processing
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KR1020130005370A
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Korean (ko)
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KR20140093806A (en
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김선장
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삼성중공업 주식회사
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
    • Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]

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Abstract

A load management method and controller of a controller are disclosed. A method of managing a load of a controller according to an aspect of the present invention includes: a data processing step of processing data received from management equipment; And transferring the processed data to an upper system, the load of the controller is measured, and when the load exceeds a predetermined threshold value, And a data transfer step of storing the subordinate data in the temporary memory, wherein the subordinate data is transferred to the host system when the load of the controller is smaller than a preset stable value at the next data transfer step.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001]

The present invention relates to a load management method and controller of a controller.

In a system for controlling and monitoring a plurality of devices, a controller for controlling the corresponding devices and processing data, alarms, and events received from the respective devices is provided. It is very important to manage the load of such controllers.

Of course, the engineer can predict the load to some extent at the design stage, but the load of the controller may be temporarily increased due to a large number of alarms, event generation, increase in analog control operation and increase in data communication requirement. In particular, if the load increases beyond a certain level, the controller may not be able to recover due to a software abnormality.

For example, when a problem arises due to the load of such a controller in a ship or an automobile, a load of the controller is an important issue because a large risk may occur.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and an object of the present invention is to provide a method and a controller for efficiently managing a load of a controller that controls a plurality of devices.

Other objects of the present invention will become more apparent through the following preferred embodiments.

According to an aspect of the present invention, there is provided a data processing method comprising: a data processing step of processing data received from management equipment; And transferring the processed data to an upper system, the load of the controller is measured, and when the load exceeds a predetermined threshold value, And a data transfer step of storing the subordinate data in the temporary memory, wherein the subordinate data is transmitted to the host system when the load of the controller is smaller than a preset stable value at the next data transfer step, There is provided a recording medium on which a program for executing the program is recorded.

The method may further include setting a default priority to the management apparatuses.

In addition, the temporary memory may store information on the processing time of the rearranged data.

According to another aspect of the present invention, there is provided a data processing apparatus including: a data processing unit for processing data received from management equipment; A data communication unit for transmitting data processed by the data processing unit to an upper system; A load measuring unit for measuring a load of the controller; And when transmitting the data to an upper system, if the load exceeds a predetermined threshold value, the data of the higher priority among the data is transmitted to the upper system according to the priority, and the remaining lower data is stored in the temporary memory And the subordinate data is transmitted to the upper system when the load of the controller is smaller than a preset stable value at the time of the next data transmission.

Here, a basic priority is set in the management equipments, and information about a processing time of the subordinate data may be stored in the temporary memory.

According to the present invention, the load can be efficiently managed by selectively controlling the transmission timing of the data from the management equipment according to the load state of the controller.

1 is a block diagram schematically showing an entire system in which a controller for managing a load according to an embodiment of the present invention is used.
2 is a block diagram showing a configuration of a controller according to an embodiment of the present invention;
FIG. 3 and FIG. 4 are flowcharts showing a load management process in the controller according to each embodiment of the present invention. FIG.

While the invention is susceptible to various modifications and alternative forms, specific embodiments thereof are shown by way of example in the drawings and will herein be described in detail. It should be understood, however, that the invention is not intended to be limited to the particular embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the like elements throughout the specification and claims. The description will be omitted.

FIG. 1 is a block diagram schematically showing an entire system in which a controller for managing a load according to an embodiment of the present invention is used. FIG. 2 is a block diagram illustrating a configuration of a controller according to an embodiment of the present invention. to be.

Referring to FIG. 1, an overall system according to the present embodiment includes a plurality of management equipments 10-1, 10-2, ..., 10-n (collectively referred to as 10), a controller 30 for controlling them, And a monitoring system 50 as a system.

The management equipment 10 is various input and output devices such as sensors and data output from the management equipment 10 is processed by the controller 30 and provided to the monitoring system 50. [ That is, the manager using the system monitors the management equipments 10 in real time through the monitoring system 50.

The data output from the management device 10 may be divided into general data, an alarm, and an event signal. For example, an event signal may include an error signal.

The controller 30 processes the data input from the management equipment 10 and transmits it to the monitoring system 50. When the load increases, the controller 30 can not perform a proper operation (data processing and transmission) . Generally, the greatest reason that the load temporarily increases in the controller 30 is that the communication data (general data and alarm / event signal) to be transmitted to an upper system (for example, the monitoring system 50 according to the present embodiment) .

Therefore, the controller 30 according to this embodiment uses a method of managing the load by measuring the load and adjusting the amount of data to be transferred according to the size of the load.

2, the controller 30 includes an input / output unit 210, a data processing unit 220, an event processing unit 230, a control logic unit 240, a temporary memory 250, A data communication unit 260 and a main control unit 270. The main control unit 270 may include a load management unit 272 and a load measurement unit 274 as a configuration unit for load management.

The input / output unit 210 is for transmitting / receiving data to / from the management equipment 10, and the data communication unit 260 is a communication means for transmitting / receiving data to / from the monitoring system 50.

The data processing unit 220 is for processing data received from the management equipment 10 and the event processing unit 230 is for processing alarms and events received from the management equipment 10. [ Data and alarm / event signal processing will be apparent to those skilled in the art and are not the main features of the present invention and will not be described in further detail herein.

The control logic 240 is a component that processes logic for the overall control function of the controller 30 (such as control of the management equipment 10) and will be apparent to those skilled in the art, .

The temporary memory 250 stores data for load management, which will be described in detail later.

The main control unit 270 controls the overall operation of each component of the controller 30, and in particular controls the data transmission to the monitoring system 50 depending on the load for load management.

The load measuring unit 274 functions to measure the load of the controller 30. Since the measurement of the load is a general technique, it will be apparent to those skilled in the art that further detailed description will be omitted.

The load management unit 272 may process data processed by the data processing unit 220 (hereinafter referred to as processing data) and / or processed by the event processing unit 230 in accordance with the load measured by the load measuring unit 274 And transmits all or a part of the event / alarm signal to the monitoring system 50 through the data communication unit 260. As an example, if the measured load is below a set threshold, all the processing data and alarm / event signals are sent to the monitoring system 50, and if the measured load is above the threshold, only a portion thereof is transmitted and the rest is stored in the temporary memory 250 .

As a method for selecting some of the data to be transmitted, priority is assigned to data to be transmitted (hereinafter referred to as transmission target data), and one or more is selected according to the priority. According to an example, the priority may be determined by a priority (hereinafter referred to as basic priority) set in the associated management equipment 10. [

Hereinafter, a data processing procedure for load management in the controller 30 will be described.

3 and 4 are flowcharts illustrating a load management process in the controller 30 according to each embodiment of the present invention.

Referring to FIG. 3 according to an embodiment, the controller 30 receives data from the management equipment 10 (S310) and processes the data (S320). Here, it is assumed that not all of the processed data must be transmitted to the monitoring system 50, but for convenience of explanation, it is assumed that all the processed data should be transmitted to the monitoring system 50.

However, as described above, in order to prevent a failure due to a load or the like, all of the process data is transmitted or only a part of the process data is transmitted according to the load state of the controller 30. [

To this end, the controller 30 measures the load (S330) and determines whether the load exceeds a preset threshold value (S340). The controller 30 stores information on the load threshold value in the storage means (not shown), and information on the priority for each management equipment 10 as described above is also stored in the storage means.

If the load exceeds the threshold value, when all the process data is transmitted, the load increases greatly and the controller 30 may cause a problem. Therefore, the priority of the process data is checked (S350). The priority of the processing data may be determined by the priorities assigned to the management apparatus 10 in advance. According to another example, the processing data may be classified into the priority data and the subordinate data by referring to the priority list for each data set in advance It is possible.

The priority data classified by the priority is processed for transmission to the monitoring system 50 (S355), and the subordinate data is stored in the temporary memory 250 (S360). Here, the temporary memory 250 may store information on the processing time of the subordinate data together. The monitoring system 50 can recognize that the data is processed by the controller 30 at a certain point in time even if the data stored in the temporary memory 250 is transmitted to the monitoring system 50 .

If the load is below the threshold value, the controller 30 processes the transmission to the monitoring system 50 for all processing data.

Particularly, according to the present embodiment, the controller 30 determines whether the load is smaller than a preset stable value (S370). If the load is smaller than the stable value, the controller 30 not only processes the data but also the data stored in the temporary memory 250 To the monitoring system 50 (S375). In other words, if the load is set to a stable value with little load, the controller 30 determines whether the data stored in the temporary memory 250 that was not previously transmitted when the load is below the stable value (i.e., Data) together. If the load is larger than the stable value, if too much data is transmitted, the load may rapidly rise and exceed the threshold value. In this case, only the process data is transmitted (S380).

According to another example, if the load is smaller than the threshold value, all of the data stored in the temporary memory 250 together with the unconditional processing data may be processed for transmission.

Here, as another method of determining the priority of the process data for distinguishing the priority data and the subordinate data, the basic priority set in the management equipment 10 and the data stored in the temporary memory 250 may be used. As an easy example, if the basic priorities set in the management equipment # 1 to # 3 are in the order of 1 to 3, and the data according to the management equipment # 2 is stored in the temporary memory 250, Priority can be set in the order of management equipment no. 2, management equipment no. 1, management equipment no. 3. That is, if data is stored in the temporary memory 250, it may be necessary to perform faster transmission of data received from the management equipment associated with the data.

In the present embodiment, the load is managed by managing the transmission of the processing data. However, the processing for the alarm and / or event signal can be handled in the same manner. In other words, the data according to the alarm / event signal is transmitted only to the monitoring system 50 according to the degree of the load, and the rest is stored in the temporary memory 250 and transmitted later.

According to another embodiment, the alarm / event signal may need to be transmitted to the monitoring system 50 more urgently than the process data (of course, conversely, the process data may take precedence) The signal transmission processing may be performed differently.

4, the controller 30 determines whether the measured load value exceeds a first threshold value (S410). If the measured load value does not exceed the first threshold value, To the upper system (S420). Of course, if data exists in the temporary memory 250 as described above, the data may be transmitted together.

If the measured load exceeds the first threshold value, it is compared with a second threshold value that is higher than the first threshold value (S430).

When the load is smaller than the second threshold value, the controller 30 transmits all the alarm / event signals to the monitoring system 50 and transmits only the priority data in accordance with the load management process to the processing data only, The data is stored in the temporary memory 250 (S450).

On the other hand, if the load is not smaller than the second threshold value, the controller 30 processes only part of the alarm / event signal in addition to the processed data, and stores the remaining part in the temporary memory 250 (S440 ). Of course, the data stored in the temporary memory 250 may be transferred together with other processing data or the like in step S420.

According to this embodiment, the alarm / event signal is transmitted in priority to the process data in accordance with the degree of the load, so that the alarm / event signal can be safely processed even when the load is high to some extent.

The above-described method for managing the load of the controller according to the present invention can be implemented as a computer-readable code on a computer-readable recording medium. The computer-readable recording medium includes all kinds of recording media storing data that can be decoded by a computer system. For example, it may be a ROM (Read Only Memory), a RAM (Random Access Memory), a magnetic tape, a magnetic disk, a flash memory, an optical data storage device, or the like. In addition, the computer-readable recording medium may be distributed and executed in a computer system connected to a computer network, and may be stored and executed as a code readable in a distributed manner.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention as defined in the appended claims. It will be understood that various modifications and changes may be made.

10-1, 10-2, ..., 10-n: management equipment
30: Controller 50: Monitoring system

Claims (5)

A data processing step of processing data received from management equipments; And
And when the load exceeds a preset threshold value, transferring the priority data among the processed data to an upper system according to a priority order, And a data transfer step of storing the data in the temporary memory,
The subordinate data is transmitted to the upper system when the load of the controller is smaller than a predetermined stable value at the next data transmission step,
Wherein the stability value is smaller than the threshold value,
Wherein the successive data is not transmitted to the upper system when the load of the controller is smaller than the threshold value and greater than the stable value at the next data transmission step. The method according to claim 1,
And setting a default priority to the management devices. The method according to claim 1,
Wherein the temporary memory stores information on a processing time of the rearranged data. A data processing unit for processing data received from management equipment;
A data communication unit for transmitting data processed by the data processing unit to an upper system;
A load measuring unit for measuring a load of the controller; And
In transmitting the data to an upper system, when the load exceeds a preset threshold value, the priority data of the data is transmitted to an upper system according to a priority order, and the remaining lower order data is stored in a temporary memory And the load data is transmitted to the host system when the load of the controller is less than a preset stable value at the time of the next data transmission,
Wherein the stability value is smaller than the threshold value,
And the subordinate data is not transmitted to the upper system when the load of the controller is smaller than the threshold value and larger than the stable value at the time of the next data transmission. The method of claim 4,
The management equipment has a default priority set,
Wherein the temporary memory stores information on a processing time of the rearranged data.
KR1020130005370A 2013-01-17 2013-01-17 Method for managing load of controller and controller KR101465720B1 (en)

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KR102073274B1 (en) * 2018-04-04 2020-02-05 네이버 주식회사 Method and system for determining critical state of distributed system

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20040098919A (en) * 2003-05-16 2004-11-26 엘지전자 주식회사 Call process system and method for trunk line overload in mobile communication system
KR100677881B1 (en) * 2005-08-13 2007-02-05 삼성전자주식회사 A drive control apparatus and method of multi-air conditioning system
KR100841952B1 (en) * 2007-03-20 2008-06-30 삼성중공업 주식회사 Method and system for data transmission control of distributed control system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20040098919A (en) * 2003-05-16 2004-11-26 엘지전자 주식회사 Call process system and method for trunk line overload in mobile communication system
KR100677881B1 (en) * 2005-08-13 2007-02-05 삼성전자주식회사 A drive control apparatus and method of multi-air conditioning system
KR100841952B1 (en) * 2007-03-20 2008-06-30 삼성중공업 주식회사 Method and system for data transmission control of distributed control system

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