KR20150075735A - Apparatus and method for controlling the cooperation of water quality TMS and PLC - Google Patents

Apparatus and method for controlling the cooperation of water quality TMS and PLC Download PDF

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KR20150075735A
KR20150075735A KR1020130163971A KR20130163971A KR20150075735A KR 20150075735 A KR20150075735 A KR 20150075735A KR 1020130163971 A KR1020130163971 A KR 1020130163971A KR 20130163971 A KR20130163971 A KR 20130163971A KR 20150075735 A KR20150075735 A KR 20150075735A
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plc
tms
data
water quality
transmitting
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KR1020130163971A
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Korean (ko)
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손한수
임종협
이재환
김기형
배민수
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인천환경공단
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    • G—PHYSICS
    • G08—SIGNALLING
    • G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C19/00—Electric signal transmission systems
    • G—PHYSICS
    • G08—SIGNALLING
    • G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C19/00—Electric signal transmission systems
    • G08C19/02—Electric signal transmission systems in which the signal transmitted is magnitude of current or voltage
    • G—PHYSICS
    • G08—SIGNALLING
    • G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C23/00—Non-electrical signal transmission systems, e.g. optical systems
    • G08C23/06—Non-electrical signal transmission systems, e.g. optical systems through light guides, e.g. optical fibres

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  • General Physics & Mathematics (AREA)
  • Testing And Monitoring For Control Systems (AREA)

Abstract

The present invention provides a remote water quality management system and a method thereof. The method includes: a step of transmitting data to a central TMS PC from a TMS data logger; a step of converting a communications protocol from RS232 into RS242 using a protocol converter and transmitting data received from the central TMS PC to a PLC LAN herb; a step of receiving the data from the PLC herb using an optical converter, converting the data into an optical signal, and transmitting the signal to a PLC central processing unit (CPU); a step of receiving a control signal from the PLC CPU using the optical converter and transmitting the signal to the PLC LAN herb; and a step of converting the communications protocol from RS242 to RS232 using the protocol converter and transmitting the control signal received from the PLC LAN herb to the central TMS PC. The present invention is intended to realize an automatic process of field facilities according to a change of TMS data by interlocking the water quality TMS and the PLC.

Description

수질 TMS와 PLC 연동 제어 방법 및 장치{Apparatus and method for controlling the cooperation of water quality TMS and PLC}[0001] The present invention relates to a method and apparatus for controlling water quality TMS and PLC interworking,

본 발명은 수질 TMS와 PLC 연동 제어 방법 및 장치에 관한 것이다.The present invention relates to a water quality TMS and PLC interlocking control method and apparatus.

일반적인 시설의 운영 최적화를 위한 소독, 여과 등의 각 단위공정을 제어하여 관리한다. 특히 응집제 등의 약품을 정수장 유량에 따라 자동 주입하고, 약품이 투입되는 지점 바로 직후에 수질분석기를 설치하여 수질을 연속적으로 모니터링 한다. 최근에는 오존, 염소, pH, 인, 불소와 같은 공정 파라미터들이 실시간 측정기기를 통해 모니터링된다. 그러나 정수처리시설의 고도화, 계장시설의 복잡화에 따라 많은 전문인력과 유지관리 비용이 요구되고 또한 계장설비의 노후화, 유지관리의 미흡으로 인해 관리 운영 효율성 저하로 인해 시설의 운영비용만 증대되는 경우도 발생하고 있을 뿐만 아니라 계장설비의 오작동 및 부정확성으로 인한 시설의 사고 위험이 크게 늘어나고 있다.
It controls and manages each unit process such as disinfection and filtration to optimize general facility operation. In particular, the coagulant and other chemicals are automatically injected according to the flow rate of the water purification plant, and the water quality analyzer is installed immediately after the point where the chemical is introduced to continuously monitor the water quality. In recent years, process parameters such as ozone, chlorine, pH, phosphorus, and fluorine are monitored through real-time measurement instruments. However, due to the increase in water purification facilities and the complexity of instrumentation facilities, many professional workers and maintenance costs are required. Also, when the operation cost of the facility is increased due to the deterioration of the management operation efficiency due to the insufficient maintenance of the instrumentation facilities As well as the risk of accidents at facilities due to malfunctions and inaccuracies of instrumentation facilities are greatly increasing.

이와 같이 일반적으로 정수처리장의 DO, pH, MLSS, 온도, NH4 및 NO3 등의 수질 상태를 감시하여 수질을 분석하고 정화시키기 위한 정수처리장 모니터링 시스템의 개선에 대한 요구가 있어왔다. 정수처리장을 감시하는 시스템은 수질의 변화를 감지하여 수질이 오염시 정수를 하기위하여 정수약품이 투입되고, 수질의 기준치 자료가 입력된 모델에 따라 자동으로 정수약품의 양을 결정하여 투입하는 장치가 필요하다.
In general, there has been a demand for improvement of a water treatment plant monitoring system for analyzing and purifying water quality by monitoring water quality conditions such as DO, pH, MLSS, temperature, NH4 and NO3 of a water treatment plant. The system that monitors the water treatment plant monitors the change in water quality and puts the water medicine in order to make the water quality polluted, and automatically determines the amount of the water medicine according to the inputted model of the water quality standard data, need.

수질 TMS는 수질원격 감시체계를 가리키는 말로, 최근 수질원격감시체계 분야에 있어서, 하수, 폐수 처리시설 및 폐수 배출사업장의 수질오염물질 배출상황을 실시간으로 감시함으로서 수질 오염사고를 예방하고 사업장으로 하여금 배출상황을 분석, 관리하도록 함으로서 폐수 배출 시설 및 방지시설의 공정개선을 유도하는 기술에 대한 필요성이 존재하였다.
Water Quality TMS refers to the water quality remote monitoring system. In the area of water quality remote monitoring system, it monitors real-time monitoring of water pollutant emission status of sewage, wastewater treatment facility and waste water discharge business site to prevent water pollution accident, There has been a need for technology to induce process improvement of wastewater discharge facilities and prevention facilities by analyzing and managing the situation.

수질 관리 시스템에서 현장 설비가 고장나거나 인력 부족으로 인력 부재시 약품 과다투입으로 인한 약품비용이 증가하는 문제가 존재하였다. 또한 간헐적 ALUM펌프 가동 시기를 놓쳐 불안한 공정 운영이 지속되는 문제 및 방류수 T-P DATA의 변동 추이가 일정하지 않다는 문제점이 존재하였다. 본 발명은 이러한 문제를 해결하고자 한다.
In the water quality management system, there was a problem that the on-site facilities were broken or the labor cost was increased due to the overproduction of the chemicals in the absence of the labor force. In addition, there was a problem that the operation process of the intermittent ALUM pump was missed and the operation of the unstable process was continued, and the fluctuation trend of the discharged water TP data was not constant. The present invention aims to solve such a problem.

개시되는 내용은 수질TMS와 PLC를 연동하여 TMS DATA의 변화에 따라 현장 설비의 자동운전을 가능하게 하며, 이에 따라 전체적인 수질 관리 시스템의 자동공정을 이루는 방법 및 장치를 제시한다.
The present invention relates to a method and apparatus for automatic operation of an overall water quality management system that enables automatic operation of a site facility in accordance with a change in TMS data by linking water quality TMS and PLC.

수질 관리 시스템에서 현장 설비가 고장시 즉각적인 대응이 가능하도록 하는 자동화 시스템을 구현할 수 있다. 또한 인력 부족으로 인력 부재시 약품 과다투입으로 인한 약품비용이 증가하는 문제를 해결할 수 있다. 간헐적 ALUM펌프 가동 시기를 놓쳐 불안한 공정 운영이 지속되는 문제 및 방류수 T-P DATA의 변동 추이가 일정하지 않다는 문제점을 해결할 수 있다.An automated system can be implemented that allows the water quality management system to respond promptly to faults in the field facility. In addition, the shortage of manpower can solve the problem of the increase in the cost of chemicals due to overproduction of chemicals. It is possible to solve the problem that the intermittent ALUM pump operation time is missed, the problem of the unstable process operation continuing and the fluctuation trend of the discharged water T-P data is not constant.

또한 현장설비 수리등으로 상시감시가 어려운 경우 확인을 위해 중앙감시실과 현장을 번갈아 다니는 업무 효율 저하를 방지한다.In addition, it prevents the deterioration of work efficiency that alternates between the central monitoring room and the site to confirm when it is difficult to monitor at all times by repairing the on-site facilities.

도 1은 본 발명의 일 실시예에 따른 수질원격관리 시스템의 블록도.
도 2는 본 발명의 일 실시예에 따른 PLC가 연동된 시스템의 블록도.
도 3은 본 발명의 일 실시예에 따른 수질원격관리 시스템과 PLC 연동의 흐름도.
도 4는 본 발명의 일 실시예에 따른 수질원격관리 시스템과 PLC 연동의 구성도.1 is a block diagram of a water quality remote management system in accordance with an embodiment of the present invention.
2 is a block diagram of a PLC interworking system according to an embodiment of the present invention;
3 is a flow chart of a water quality remote management system and PLC interworking according to an embodiment of the present invention.
4 is a block diagram of a water quality remote management system and a PLC interlock according to an embodiment of the present invention.

이하에서는 본 발명의 바람직한 실시예에 관하여 첨부도면을 참조하여 상세하게 설명하기로 한다. 다만, 이하에서 설명되는 실시예는 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자가 발명을 쉽게 실시할 수 있을 정도로 상세하게 설명하기 위한 것에 불과하며, 이로 인해 본 발명의 보호범위가 한정되는 것을 의미하지는 않는다.
Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. It is to be understood, however, that the embodiments described below are only for explanation of the embodiments of the present invention so that those skilled in the art can easily carry out the invention, It does not mean anything.

PLC는 Process 혹은 설비의 제어를 위한 논리연산, Sequence제어, 지연, 계산 및 산술연산등의 제어동작을 시키기 위한제어순서를 일련의 명령어 형식으로 기억하는 메모리를 갖고, 메모리 내용에 따라 여러 가지 기계설비와 센서등을 제어하는 조작용 전자장치를 말한다.
The PLC has a memory that stores control sequences for control operations such as logic operation, sequence control, delay, calculation, and arithmetic operations for control of a process or facility in a series of command formats. Depending on the contents of the memory, And an electronic control device for controlling a sensor and the like.

본 발명에 따른 원격수질관리 시스템(수질 TMS)과 PLC 연동 설비 구축에 필요한 단계는 다음과 같다.The steps necessary for constructing the remote water quality management system (water quality TMS) and the PLC interlocking facility according to the present invention are as follows.

1. RS232 RS422 변환 컨버터 설치1. Installing the RS232 RS422 Conversion Converter

2. 프로그램 및 통신 프로토콜 변환 컨버터(Protocol Converter) 설치
2. Program and communication protocol conversion converter (Protocol Converter) installation

원격수질관리 시스템과 PLC가 연동하기 위해서는 두 시스템간의 데이터 전달을 원활하게 하기 위한 프로토콜 변환이 필요하다. 따라서 이에 대한 프로토콜 컨버터(Protocol Converter) 프로그램 구축이 필요하다.
In order for the remote water quality management system and the PLC to work together, protocol conversion is required to facilitate data transfer between the two systems. Therefore, it is necessary to construct a protocol converter program.

이와 함께 프로토콜 컨버터와 데이터 호환가능하도록 TMS 프로그램 및 PLC 프로그램 변환 작업이 필요하다.
In addition, TMS program and PLC program conversion work is required to make data compatible with protocol converter.

이후 PLC 프로그램 추가 및 구축 - TMS DATA 변화에 따른 현장설비(PUMP등) 자동 운전 시퀀스를 구축한다. 이에 대한 조건은 예시적으로 아래와 같다.
After that, PLC program addition and construction - Establish automatic operation sequence of on-site facility (PUMP etc.) according to TMS data change. The conditions for this are exemplified below.

1. 펌프 가동 TMS T-P DATA : 1.2mg/L 이상1. Pump operation TMS T-P DATA: 1.2mg / L or more

2. 펌프 정지 TMS T-P DATA : 0.8mg/L 이하
2. Pump stop TMS TP DATA: Less than 0.8mg / L

도 4를 참고로 하여 설명하면,Referring to FIG. 4,

1. TMS 감시용 통신 LINE : TMS 통신표준규격 프로토콜(RS232) 사용1. TMS monitoring communication line: Using TMS communication standard protocol (RS232)

거리상 RS232를 사용하는 것은 한계가 있으며 장거리 통신을 위해 TMS D/L에서 변환한(RS232RS422) DATA를 중앙감시실 감시용 TMS PC 전단에서 재변환(RS422RS232)하여 DATA를 감시 및 축적한다.
(RS232RS422) converted from TMS D / L for long distance communication is limited and RS232 RS232 is used to monitor and accumulate data at the front of TMS PC for central monitoring room monitoring.

2. RS232 Converter : RS422 RS232 변환2. RS232 Converter: RS422 RS232 Conversion

TMS 감시용 PC 후단으로 들어오는 변환이 되지않은(RS 422상태) DATA를 Protocol Converter로 연결 할 때 RS232로 변환하기위해 사용한다.
It is used to convert RS232 data which is not converted (RS 422 status) incoming to the rear end of TMS monitoring PC to Protocol Converter.

3. Protocol Converter : 프로토콜 및 프로그램 변환3. Protocol Converter: protocol and program conversion

통신 프로토콜을 변환(RS232LAN)하는 목적도 있으나 프로그램이 상이하므로 PLC시스템에 호환 가능한 프로그램으로 변환하여 연동한다.
There is also a purpose to convert the communication protocol (RS232LAN), but since the programs are different, they are converted into compatible programs in the PLC system and interworked.

4. LAN : PLC 통신 프로토콜
4. LAN: PLC communication protocol

5. PLC EWS(engineering work station) PC : 프로그램 수정 작업5. PLC EWS (engineering work station) PC: program modification work

현장에 설치운영되고 있는 PLC CPU에 시퀸스 및 프로그램을 전송, 저장하며 각 설비의 감시운전을 하는 설비(PLC OS 기능 포함)이다.
It is a facility (including PLC OS function) that transmits and stores the sequence and program to the PLC CPU installed and operated in the field and performs monitoring operation of each facility.

TMS DATA를 이용하여 운전하고자 하는 입력신호 지정 및 설비대상 자동운전 등의 프로그램을 개량할 필요가 있다.
It is necessary to improve programs such as designation of input signal to be operated and automatic operation of equipment to be operated by using TMS DATA.

6. PLC OS(operator station) PC : 현장 설비 감시운전
6. PLC OS (operator station) PC: On-site facility monitoring operation

7. TMS(Tele-Monitoring System) PC : 실시간 방류 수질 DATA 감시
7. TMS (Tele-Monitoring System) PC: Real-time discharge water quality data monitoring

수질TMS 각 측정기별 생성되는 실시간 수질상태, 측정기 동작 상태 등의 DATA를 중앙감시실에서 감시하고 DATA를 저장하는 기능
Water quality TMS It monitors the data such as the real-time water quality condition generated by each measuring instrument and the operation status of the measuring instrument in the central monitoring room and stores the data.

8. LAN HUB : DATA WAY8. LAN HUB: DATA WAY

EWS PC, OS PC, TMS PC등의 DATA를 다수의 네트워크 시스템을 연결하는 기능
Ability to connect multiple network systems with EWS PC, OS PC, TMS PC, etc.

9. Optical Converter : LAN Optical 변환9. Optical Converter: LAN Optical conversion

장거리 통신을 위해 LAN Optical 변환하여 PLC CPU 연결
Connect PLC CPU by LAN Optical conversion for long distance communication

10. Optical Cable
10. Optical Cable

Claims (3)

TMS 데이터 로거(logger)로부터 중앙 TMS PC로 데이터를 송신하는 단계;
프로토콜 컨버터가 중앙 TMS PC로부터 수신받는 데이터를 RS232에서 RS242로 통신 프로토콜을 변환하여 PLC LAN 허브에 송신하는 단계;
광학 컨버터가 PLC LAN 허브로부터 데이터를 입력받아 광신호로 변환하여 PLC 중앙 처리장치에 전달하는 단계;
광학 컨버터가 PLC CPU로부터 제어신호를 입력받아 PLC LAN 허브에 전달하는 단계;
프로토콜 컨버터가 PLC LAN 허브로부터 수신받은 제어신호를 RS242에서 RS232로 통신 프로토콜을 변환하여 중앙 TMS PC로 송신하는 단계;를 포함하여 이루어지는 원격수질관리 시스템.
Transmitting data from a TMS data logger to a central TMS PC;
The protocol converter converts the data received from the central TMS PC into a communication protocol from RS232 to RS242 and transmits it to the PLC LAN hub;
The optical converter receiving data from the PLC LAN hub, converting the optical signal into an optical signal, and transmitting the optical signal to the PLC central processing unit;
Receiving the control signal from the PLC CPU and transmitting the control signal to the PLC LAN hub;
The protocol converter converts the control signal received from the PLC LAN hub to RS232 to RS232 and transmits the communication protocol to the central TMS PC.
제1항에 있어서,
상기 PLC 중앙처리장치는 수신한 TMS 데이터 중 TMS T-P 데이터가 1.2mg/L 이상인 경우, 펌프를 가동시키는 제어신호를 발생하도록 구성되는 것을 특징으로 하는 원격수질관리 시스템.
The method according to claim 1,
Wherein the PLC central processing unit is configured to generate a control signal for activating the pump when the TMS TP data of the received TMS data is 1.2 mg / L or more.
제1항에 있어서,
상기 PLC 중앙처리장치는 수신한 TMS 데이터 중 TMS T-P 데이터가 0.8mg/L 이하인 경우, 펌프를 정지시키는 제어신호를 발생하도록 구성되는 것을 특징으로 하는 원격수질관리 시스템.
The method according to claim 1,
Wherein the PLC central processing unit is configured to generate a control signal to stop the pump when the TMS TP data of the received TMS data is 0.8 mg / L or less.
KR1020130163971A 2013-12-26 2013-12-26 Apparatus and method for controlling the cooperation of water quality TMS and PLC KR20150075735A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20170011014A (en) 2015-07-21 2017-02-02 주식회사 넥서스테크놀로지스 automatic analyzer for measuring concentration of fluorine ion
CN107894746A (en) * 2017-11-28 2018-04-10 广东奥瑞特新能源设备科技有限公司 A kind of PLC of mixing plant and the communication means of computer

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20170011014A (en) 2015-07-21 2017-02-02 주식회사 넥서스테크놀로지스 automatic analyzer for measuring concentration of fluorine ion
CN107894746A (en) * 2017-11-28 2018-04-10 广东奥瑞特新能源设备科技有限公司 A kind of PLC of mixing plant and the communication means of computer

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