KR20210126871A - PLC device - Google Patents

PLC device Download PDF

Info

Publication number
KR20210126871A
KR20210126871A KR1020200044464A KR20200044464A KR20210126871A KR 20210126871 A KR20210126871 A KR 20210126871A KR 1020200044464 A KR1020200044464 A KR 1020200044464A KR 20200044464 A KR20200044464 A KR 20200044464A KR 20210126871 A KR20210126871 A KR 20210126871A
Authority
KR
South Korea
Prior art keywords
plc
temperature
life expectancy
life
memory
Prior art date
Application number
KR1020200044464A
Other languages
Korean (ko)
Inventor
오상보
Original Assignee
오상보
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 오상보 filed Critical 오상보
Priority to KR1020200044464A priority Critical patent/KR20210126871A/en
Publication of KR20210126871A publication Critical patent/KR20210126871A/en

Links

Classifications

    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05BCONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B23/00Testing or monitoring of control systems or parts thereof
    • G05B23/02Electric testing or monitoring
    • G05B23/0205Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
    • G05B23/0259Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterized by the response to fault detection
    • G05B23/0283Predictive maintenance, e.g. involving the monitoring of a system and, based on the monitoring results, taking decisions on the maintenance schedule of the monitored system; Estimating remaining useful life [RUL]
    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05BCONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00Programme-control systems
    • G05B19/02Programme-control systems electric
    • G05B19/04Programme control other than numerical control, i.e. in sequence controllers or logic controllers
    • G05B19/05Programmable logic controllers, e.g. simulating logic interconnections of signals according to ladder diagrams or function charts

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Programmable Controllers (AREA)

Abstract

The present invention relates to a PLC device capable of predicting life expectancy of the PLC device according to the peripheral temperature. The PLC device comprises: an input unit inputting the peripheral temperature of a PLC; a memory wherein life expectancy of a component according to the temperature is stored; a diagnosis unit calculating a ratio of a reference lifetime provided when the PLC is manufactured to a lifetime of the component corresponding to the input temperature to predict life expectancy of the PLC, and comparing PLC use of time and the life expectancy to determine whether the use of time exceeds the life expectancy; and a control unit controlling operations of the input unit, the memory, and the diagnosis unit.

Description

발명의 명칭 PLC 장치{PLC device}Title of invention PLC device

전통적인 산업현장에서 자동화 설비는 릴레이 등을 사용한 기계적인 장비로 구성되어 있었다. 기계적인 장비로되어 있는 자동화 설비의 기능을 바꾸기 위해서는 설비 내부회로의 배선을 다시 일일히 고쳐야 하는 어려움이있었다. 이러한 점을 해결하고자 만들어진 것이 PLC(Programmable Logic Controller, 이하 PLC)이다.In traditional industrial sites, automation equipment was composed of mechanical equipment using relays and the like. In order to change the function of an automated facility, which is a mechanical device, there was a difficulty in re-wiring the internal circuit of the facility one by one. PLC (Programmable Logic Controller, hereafter referred to as PLC) was created to solve this problem.

PLC는 프로그램 가능한 논리적인 컨트롤러이다. PLC는 일반적으로 컴퓨터와 같은 역할을 하는데, 기계에서 오는 신호를 받아서 내부에 프로그램된 내용대로 처리한 이후에 처리된 신호를 기계로 출력한다. PLC는 릴레이, 타이머 및 카운터 등과 같은 제어장치의 기능을 집적소자 및 트랜지스터 등과 같은 반도체 소자로 대체한 것으로서 기본적인 시퀀스 제어 기능에 수치 연산 기능을 추가하여 프로그램 제어가 가능하고, 내부의 메모리에 미리 저장된 프로그램에 따라 소정의 로직을 수행한다. PLC는 장치제어, 장치 수치세팅, 시간제어, 실시간감시, 실시간데이터 수집, 및 안전장치 가동 등 다양한 작업에 적용될 수 있다.이처럼 PLC는 다양한 산업분야에 널리 이용되고 있고, 저마다 사용환경이 상이하므로 그에 따라 예상 수명이달라진다. 또한, PLC는 고온, 고습인 환경에 사용 될 수도 있고 저온 환경에 사용될 수도 있다. 따라서 사용자는PLC의 사용 가능 시간을 정확하게 알 수 없기 때문에 PLC가 고장난 후에서야 비로소 부품의 수명이 다해 파손된 걸을 확인할 수 있다.A PLC is a programmable logical controller. PLC generally acts like a computer, receives a signal from the machine, processes it according to the contents programmed inside, and then outputs the processed signal to the machine. PLC replaces the functions of control devices such as relays, timers, and counters with semiconductor devices such as integrated devices and transistors. Executes a predetermined logic according to PLC can be applied to various tasks such as device control, device numerical setting, time control, real-time monitoring, real-time data collection, and operation of safety devices. As such, PLC is widely used in various industrial fields, and each has a different usage environment. Depending on the expected life expectancy will vary. In addition, PLC may be used in a high temperature, high humidity environment or may be used in a low temperature environment. Therefore, since the user cannot know exactly how long the PLC can be used, it is only after the PLC is broken that it can be confirmed that the parts are damaged due to the end of their lifespan.

일반적으로 PLC의 사용설명서에 제품 수명이 명시되어 있으나 사용자가 언제부터 사용했는지 모르는 경우도 있고 사용 중 수명에 의한 고장 예측을 할 수 없기 때문에 불시의 고장으로 전체 시스템에 큰 문제를 발생시킬 수In general, the lifespan of the product is specified in the user manual of the PLC, but there are cases where the user does not know when it has been used, and since it is not possible to predict the failure due to the lifespan during use, unexpected failures can cause major problems to the entire system.

있다.따라서 PLC의 수명을 예측하고 고장이 나기 전에 미리 능동적으로 대처할 필요가 있다.Therefore, it is necessary to predict the lifespan of PLC and proactively deal with it before failure occurs.

본 발명은 상기와 같은 종래 기술의 문제점을 해결하기 위하여 제안된 것으로, 본 발명이 해결하고자 하는 과제는 온도에 따른 PLC의 기대수명을 진단하고, 사용자에게 기대수명 초과 여부와 잔여수명을 알려줄 수 있는 PLC장치를 제공하는 것이다.The present invention has been proposed to solve the problems of the prior art as described above, and the problem to be solved by the present invention is to diagnose the life expectancy of the PLC according to the temperature, and to inform the user whether the life expectancy is exceeded and the remaining life. To provide a PLC device.

상기와 같은 기술적 과제를 해결하기 위해, 본 발명의 일실시예에 따른 PLC [0008] 장치는 PLC의 주변온도를 입력하는In order to solve the above technical problem, the PLC device according to an embodiment of the present invention is to input the ambient temperature of the PLC

입력부; 온도에 따른 부품의 기대수명이 저장된 메모리; PLC 제작시 부여된 기준수명과 상기 입력 온도에 대응input unit; a memory in which the expected lifespan of a component according to temperature is stored; Corresponds to the standard life given during PLC manufacturing and the above input temperature.

하는 부품의 기대수명과의 비를 계산해 PLC의 기대수명을 예측하고, PLC 사용시간과 상기 기대수명을 비교하여Predict the life expectancy of the PLC by calculating the ratio of the expected life of the parts to be used, and compare the PLC usage time with the expected life

사용시간이 기대수명을 초과하였는지 여부를 판단하는 진단부; 및 상기 입력부, 메모리 및 진단부의 동작을 제어하는 제어부를 포함할 수 있다a diagnostic unit that determines whether the usage time exceeds the expected lifespan; and a control unit for controlling operations of the input unit, the memory, and the diagnosis unit.

이와 같은 본 발명의 실시예에 따르면, 온도에 따른 PLC의 기대수명을 진단하고 고장을 예측할 수 있다.According to this embodiment of the present invention, it is possible to diagnose the life expectancy of the PLC according to the temperature and predict the failure.

또한, 본 발명의 일실시예에 따르면, LED를 통해 현재 PLC 상태를 실시간으로 확인할 수 있다.In addition, according to an embodiment of the present invention, the current PLC state can be checked in real time through the LED.

또한, 본 발명의 일실시예에 따르면, PLC 히스토리를 활용해 사용시간이 수명을 초과한 시간을 역추적할 수 있어 고장 진단과 시스템 유지보수를 효율적으로 수행할 수 있다.In addition, according to an embodiment of the present invention, it is possible to trace back the time when the use time exceeds the lifespan by utilizing the PLC history, so that fault diagnosis and system maintenance can be efficiently performed.

또한, 본 발명의 일실시예에 따르면, 추후 PLC 내부에 온도 컨트롤러를 내장하면 사용자가 직접 입력하지 않고PLC 내부에서 온도를 측정하여 자동으로 수명을 진단할 수 있다.In addition, according to an embodiment of the present invention, if a temperature controller is built in the PLC later, the lifespan can be automatically diagnosed by measuring the temperature inside the PLC without the user directly inputting it.

이하에서는 본 발명의 구체적인 실시 예를 도면과 함께 상세히 설명하도록 한다. 그러나, 본 발명의 사상이 제시되는 실시 예에 제한된다고 할 수 없으며, 또 다른 구성요소의 추가, 변경, 삭제 등에 의해서 퇴보적인 다른발명이나, 본 발명 사상의 범위 내에 포함되는 다른 실시 예를 용이하게 제안할 수 있다.Hereinafter, specific embodiments of the present invention will be described in detail with drawings. However, it cannot be said that the spirit of the present invention is limited to the presented embodiment, and other inventions that are degenerative by addition, change, deletion, etc. of other elements or other embodiments included within the scope of the spirit of the present invention can be easily implemented. can suggest

본 발명에서 사용되는 용어는 가능한 현재 널리 사용되는 일반적인 용어를 선택하였으나, 특정한 경우는 출원인이 임의로 선정한 용어도 있으며, 이 경우 해당되는 발명의 설명 부분에서 상세히 그 의미를 기재하였으므로,단순한 용어의 명칭이 아닌 용어가 가지는 의미로서 본 발명을 파악하여야 함을 밝혀 두고자 한다.As for the terms used in the present invention, general terms that are currently widely used as possible have been selected, but in certain cases, there are also terms arbitrarily selected by the applicant, and in this case, the meaning of the simple term has been described in detail in the description of the corresponding invention, so the name of the simple term is It is intended to clarify that the present invention should be understood as the meaning of a term other than that of the term.

즉, 이하의 설명에 있어서, 단어 '포함하는'은 열거된 것과 다른 구성요소들 또는 단계들의 존재를 배제하지 않는다.That is, in the following description, the word 'comprising' does not exclude the presence of elements or steps other than those listed.

Claims (1)

PLC의 주변온도를 입력하는 입력부;
온도에 따른 부품의 기대수명이 저장된 메모리;
PLC 제작시 부여된 기준수명과 상기 입력 온도에 대응하는 부품의 기대수명과의 비를 계산해 PLC의 기대수명을 예측하고, PLC 사용시간과 상기 기대수명을 비교하여 사용시간이 기대수명을 초과하였는지 여부를 판단하는 진
단부; 및 상기 입력부, 메모리 및 진단부의 동작을 제어하는 제어부를 포함하는 PLC 장치.
an input unit for inputting the ambient temperature of the PLC;
a memory in which the expected lifespan of a component according to temperature is stored;
Estimate the life expectancy of the PLC by calculating the ratio of the standard life given during PLC manufacturing and the expected life of the parts corresponding to the input temperature, and whether the use time exceeds the expected life by comparing the PLC use time with the expected life Jin to judge
end; and a control unit for controlling operations of the input unit, the memory, and the diagnosis unit.
KR1020200044464A 2020-04-13 2020-04-13 PLC device KR20210126871A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020200044464A KR20210126871A (en) 2020-04-13 2020-04-13 PLC device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020200044464A KR20210126871A (en) 2020-04-13 2020-04-13 PLC device

Publications (1)

Publication Number Publication Date
KR20210126871A true KR20210126871A (en) 2021-10-21

Family

ID=78269018

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020200044464A KR20210126871A (en) 2020-04-13 2020-04-13 PLC device

Country Status (1)

Country Link
KR (1) KR20210126871A (en)

Similar Documents

Publication Publication Date Title
JP6904639B2 (en) Background collection of diagnostic data from field instrumentation
RU2530256C2 (en) Method and apparatus for controlling operating field devices through portable communicator
US20060259837A1 (en) Safety device
US9310795B2 (en) Safety controller and method for controlling an automated installation
CN203324809U (en) Diagnostic apparatus for control system
KR102116064B1 (en) Plant diagnosis method using the same system
KR101178186B1 (en) Method of alarming abnormal situation of plc based manufacturing system using plc signal pattern in pc based system
US20110264396A1 (en) Electrical circuit with physical layer diagnostics system
US5953226A (en) Control system having an application function with integrated self diagnostics
US6141628A (en) Programmable logic controller software with embedded class logic and alarm/shutdown functionality
JP2018088177A (en) Information processing device, information processing system, information processing method, and information processing program
US6963814B2 (en) Systems, devices, and methods for acceptance testing a fieldbus component configuration program
CN113535588A (en) CMP equipment simulation test method and test system
KR101748282B1 (en) Plant diagnosis system and diagnosis method using the same
KR20210126871A (en) PLC device
SE544803C2 (en) Method, system and device for a working machine
Hu et al. A knowledge-based real-time diagnostic system for PLC controlled manufacturing systems
US11809175B2 (en) Alarm management apparatus, alarm management method, and computer-readable recording medium
CN106227183B (en) PLC device
US6701462B1 (en) Situational aware output configuration and execution
JP2574726B2 (en) Equipment machine abnormality detection device
Fan et al. Research on embedded PLC control system fault diagnosis: a novel approach
WO2005013098A2 (en) Continuous online safety and reliability monitoring
KR101021981B1 (en) Apparatus for processing alarm in semiconductor manufacturing equipments and method for setting alarm
CN113126571B (en) Electric transmission device health diagnosis system, method and central control device