KR100896018B1 - Stack tele-monitoring system - Google Patents

Abstract

The present invention relates to a chimney remote monitoring system, and more specifically, by continuously measuring the environmental pollutant emission concentration in the air environment or the chimney of the workplace with an automatic measuring device, it is connected to the main computer of the control center online to monitor the pollutant emission situation The present invention relates to a chimney remote monitoring system that can be monitored 24 hours a day and obtain reliable data by performing a remote search function using a standard gas.

The chimney remote monitoring system of the present invention includes a measuring device for measuring in real time the pollutant concentration discharged from one or more chimneys and outputting a measured value signal; A data collection device for transmitting a remote retrieval command transmitted from a control center for monitoring or controlling the one or more chimneys to the measurement unit, collecting and storing the measured value signal in real time as average data, and transmitting the averaged data to the control center; And a standard gas supply device for injecting standard gas into the measuring unit by the remote retrieval command.

Chimney Remote Monitoring System, Standard Gas, Remote Search Command

Description

Chimney remote monitoring system {Stack tele-monitoring system}

The present invention relates to a chimney remote monitoring system, and more specifically, by continuously measuring the environmental pollutant emission concentration in the air environment or workplace chimney with an automatic measuring device, it is connected to the main computer of the control center online to monitor the pollutant emission situation 24 The present invention relates to a chimney remote monitoring system capable of monitoring time and obtaining reliable data by performing a remote search function using a standard gas.

Typically, gas stacks containing pollutants are emitted from workplace chimneys. In the Air Quality Preservation Act, the amount of flue gas is regulated by using the emission allowance standard.As a method of measuring the amount of the discharged gas, until 1996, measurement personnel directly climbed the chimney, put a sensor into the measuring hole, and measured the characteristics of the emission gas. It had to be measured. However, since the measurement of the exhaust gas properties is dangerous and cumbersome, since 1996, an automatic sensor was installed directly inside the chimney, and a method of transmitting data on the emission gas properties obtained from the sensor to the central control center began to be used. It is called a telemetering system (TMS).

In general, the emissions measurement items of the telemetry system installed in the chimney are dust, NOx, SOx, CO, O2, exhaust gas flow rate and exhaust gas temperature. The chimney exhaust gas properties are transmitted to the main server as exhaust gas input data.

In general, the telemetry system installed in the chimney is a dust sensor for measuring the concentration of pollutants in the flue gas and a dust measurement for amplifying and modifying a unique signal (eg, RS232C communication standard) from the dust sensor to analyze the detected value. A nitrogen oxide measuring sensor for measuring nitrogen oxides in a flue gas and a nitrogen oxide measuring device for amplifying and modifying a unique signal (for example, RS232C communication standard) from a nitrogen oxide measuring sensor and analyzing the detected value; A sulfur oxide measuring sensor for measuring sulfur oxides in a flue gas, a sulfur oxide measuring device for amplifying and transforming a unique signal (for example, RS232C communication standard) from a sulfur oxide measuring sensor and analyzing a detected value; Intrinsic signals (eg RS232C communication) from carbon monoxide and carbon monoxide sensors for measuring carbon monoxide in gases Carbon monoxide measuring device that amplifies and deforms and analyzes detection values, an oxygen sensor for measuring flue gas and oxygen concentration, and a unique signal (for example, RS232C communication standard) is amplified from an oxygen sensor. Oxygen measuring device that deforms and analyzes the detection value, flow rate sensor for measuring the flow rate of the flue gas and a flow rate sensor that amplifies and deforms the received signal (for example, RS232C communication standard) to analyze the detected value A measuring device, a temperature sensor for measuring the temperature of the flue gas, a temperature measuring device for receiving a unique signal (for example, RS232C communication standard) from the temperature sensor, amplifying and modifying the detected value, and analyzing the detected value; Dust measuring device; Sulfur oxide measuring device; Nitrogen oxide measuring device; Carbon monoxide measuring device; Flow measuring device; It consists of a data logger for integrating and transmitting the output of the temperature measuring device.

The present invention devised to solve the problems of the prior art as described above is to constantly measure the environmental pollutant emission concentration in the air environment or the chimney of the workplace with an automatic measuring device, connected to the main computer of the control center and the pollutant emission situation The purpose is to provide a chimney remote monitoring system that can monitor 24 hours a day.

In addition, an object of the present invention is to provide a chimney remote monitoring system capable of measuring reliable data by performing a remote search function using a standard gas.

In addition, the present invention is to be attached to the automatic measuring device for one to three kinds of workplaces in the country, and constantly grasp the pollutants discharged from the workplace to switch from the site-oriented after-care and regulatory-oriented system to the precautionary and autonomous management system. In addition, it has another purpose to provide a chimney remote monitoring system that can be used as environmental policy data through scientific management of pollution statistics data, and to establish the basis of implementation of total amount regulation and emission trading system.

The object of the present invention is a chimney remote monitoring system, comprising: a measuring device for measuring a pollutant concentration discharged from at least one chimney in real time and outputting a measured value signal and a measuring device status signal; Sending a remote search command transmitted from the control center for monitoring or controlling the one or more chimneys to the measuring instrument, collects the measured value signal and the measuring instrument status signal in real time, generates and stores the average data, and transmits to the control center. Data collection device; And a standard gas supply device for injecting standard gas into the measuring device by a remote search command transmitted from the control center, wherein the standard gas supply device includes zero gas and span gas, It is achieved by a chimney remote monitoring system that determines the measurement reliability of the meter based on the difference between the concentration of the standard gas and the measured indication value or reduces the error of the measured value when the reliability of the measured value is lowered.

In addition, another object of the present invention is a chimney remote monitoring system, measuring the concentration of pollutants discharged from one or more chimneys in real time and outputs a measured value signal and a measuring instrument status signal, the measured value signal and measuring instrument status signal To collect and generate in real time the average data, and to manage the data collection device for transmitting to the control center, and the standard gas supply device for injecting the standard gas into the measuring device, by sending a remote search command to the data collection device The standard gas supply device is remotely controlled to inject a standard gas into a measuring device to determine reliability, and is achieved by a chimney remote monitoring system including a control center for monitoring one or more chimneys and analyzing data.

In addition, the standard gas supply apparatus of the present invention includes a zero gas and a span gas, the control center to determine the measurement reliability of the measuring instrument or the measured value based on the difference between the concentration of the standard gas and the measured indication value remotely It is preferable to reduce the error of the measured value when the reliability of is lowered.

In addition, when the data collection device of the present invention is at least one intermediate data collection device for collecting the data of the data collection device to transmit to the control center; And it is preferable that the data collection device further comprises a self-output device for outputting each of the measured value signal measured by the measuring device.

In addition, the control center of the present invention preferably monitors or controls the chimney by performing any one or more of the warning system function, workplace monitoring function, analysis / statistics function and remote control function.

In addition, the state of the measuring device of the present invention is preferably any one of normal, during calibration, malfunction, power failure and maintenance.

Therefore, the chimney remote monitoring system of the present invention by continuously measuring the environmental pollutant emission concentration in the atmospheric environment or workplace chimney with an automatic measuring device, it is connected to the main computer of the control center online to monitor the pollutant emission situation 24 hours There is a significant and advantageous effect of this.

In addition, the chimney remote monitoring system of the present invention by performing a remote search function using a standard gas, there is a significant and advantageous effect that can measure reliable data.

In addition, the chimney remote monitoring system of the present invention is to be attached to the automatic measuring equipment for 1 to 3 types of workplaces in the country, and always grasp the pollutants discharged from the workplace to prevent in advance in the field-oriented after-care and regulatory-oriented system And it has a significant and beneficial effect of switching to autonomous management system, using it as environmental policy data through scientific management of pollution statistics data, and establishing the basis of implementation of total amount regulation and emission trading system.

The terms or words used in this specification and claims are not to be construed as being limited to their ordinary or dictionary meanings, and the inventors may appropriately define the concept of terms in order to best describe their invention. It should be interpreted as meaning and concept corresponding to the technical idea of the present invention based on the principle that the present invention.

Therefore, the embodiments described in the specification and the drawings shown in the drawings are only the most preferred embodiment of the present invention and do not represent all of the technical idea of the present invention, various modifications that can be replaced at the time of the present application It should be understood that there may be equivalents and variations.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The pollutant items measured by the chimney remote monitoring system according to the present invention are 7 items of pollutants such as dust, SO ₂ , NOx, HCl, HF, NH ₃ and CO and non-pollutants 3 such as oxygen, temperature and flow rate. It is divided into four items.

The chimney remote monitoring system according to the present invention includes a measuring device, a data collection device, a standard gas supply device, and a control center.

The measuring device measures the pollutant concentration discharged from one or more chimneys in real time and outputs the measured value signal and the state of the measuring device. The data collecting device collects the measured value signal in real time and generates and stores the averaged data. In addition, the standard gas supply device injects the standard gas into the measuring device by the data collector, and the control center serves to monitor or control one or more chimneys through the data received from the data collector.

The function of the control center of the chimney remote monitoring system according to the present invention is as follows.

function Contents I. Data collection and analysis (1) Workplace data collection function using wired and wireless communication (2) Determination of exceeding emission allowance standard, calculation of discharge charge, etc. II. watch Comprehensive monitoring of pollutant emission status at target sites by the Ministry of Environment and local governments III. Yes, alarm Function to automatically notify each workplace and local government through telephone, mobile phone, and fax when there is a possibility of exceeding the emission allowance standard Ⅳ. Remote command Receive untransmitted data of data collector by Dump command, and inject standard gas into measuring device automatically through remote search command to secure reliability and transparency of measurement data by checking whether the measuring device is in normal operation (Other SETT, SETP, CCHK function, etc.)

1 is a view for explaining the example and alarm system of the chimney remote monitoring system according to an embodiment of the present invention. Referring to FIG. 1, the measurement items (7 pollutants: dust, SO ₂ , NOx, HCl, HF, NH ₃ , CO / non-pollutant items) discharged from the workplace chimney are oxygen, temperature, and flow rate. It is measured in real time by the measuring device and transferred to the data collection device. The host computer collects the measured values of the measurement items from the data collection device and the intermediate data collection device, and automatically calls, mobile phones and faxes to each business site and local governments when there is a possibility of exceeding or exceeding the emission limit. You will be alerted.

2 is a view for explaining a workplace monitoring function of the chimney remote monitoring system according to an embodiment of the present invention. Referring to Figure 2, receiving data inquiry (real-time screen scrolling, data inquiry by period, air cost 3x inquiry, before and after correction value comparison, real-time item emission status, real-time graph, real-time trend inquiry function), analysis / statistics (status inquiry) , Over-reference inquiry, Average value inquiry by period, Min / Max value inquiry, Status display inquiry, Communication status inquiry, Graph inquiry function provided, Remote control (Remote command transmission history, Remote command transmission history inquiry, Remote search history inquiry, Constant search Provide history inquiry function), administrative processing (administrative basic data, administrative history management, accuracy inspection history inquiry, relative accuracy history inquiry, discharge and discharge charge function provided), system management (provide business information, chimney information, TMS target information) , Standard value provision, facility information provision, data closing function, system setting / various code management function) and monitoring / alarm (large screen display, ARS notification, network Is subdivided into surveillance, it provided the communication line monitoring) function.

3 is a view for explaining the analysis function of the chimney remote monitoring system according to an embodiment of the present invention. Referring to Figure 3, the status inquiry (measurement installation status, measurement item status, maintenance status, providing the measurement installation status of the meter by year), reference exceeded inquiry (baseline exceeded history, monthly threshold exceeded status, reference exceeded cause inquiry function provided ), Data range inquiry (average value inquiry by period, minimum / maximum status status inquiry function), status display inquiry (status indication status by workplace, operation rate status inquiry function by workplace), communication status inquiry (reception status by period, untransmitted history, Inquiry on dump target, wireless reception sensitivity inquiry function), graph inquiry (graph by measurement item, graph by chimney, correlation trend inquiry function)

4 is a view for explaining the remote control function of the chimney remote monitoring system according to an embodiment of the present invention. Referring to FIG. 4, the measurement items (7 pollutants: dust, SO2, NOx, HCl, HF, NH3, CO / non-pollutant items) discharged from the workplace chimney are measured at the meter. Measured in real time and delivered to the data collection device, the data collection device transmits the result of measuring the measurement items in the measuring device to the control center.

 If necessary, when the control center transmits a remote search command (remote check: RCHK) to the facility, the data collection device receives the remote search command, which causes the standard gas supply device to open and close the standard gas. , The meter measures standard gas.

The standard gas supply device is composed of a zero gas and a span gas.

Referring to the process in which the standard gas is injected and measured, first, when the remote control command is transmitted from the control center to the data collecting device, the data collecting device injects zero gas into the measuring instrument by opening a valve connected to the zero standard gas. Measure by Then, when the time stored in the data collecting device elapses, the zero standard gas valve is closed, and the data collecting device opens a valve connected to the span standard gas to inject a span gas into the measuring device and measure the measured value. The data collection device receives the measurement indication values for measuring the two standard gases from the measuring device and transmits them to the control center together with the concentration of the standard gas stored in the data collection device. The control center judges the reliability of the meter at the remote location based on the difference between the concentrations of the two standard gases and the measurement indication.

5 is a view for explaining a chimney remote monitoring system according to an embodiment of the present invention.

Referring to FIG. 5, the scrubber 1 is a facility for reducing pollutants (Gas phase (NOx, SO ₂ , CO, HCl, NH ₃ , HF)) discharged from the chimney.

The bag filter 2 is a facility for reducing pollutants (dust) emitted from the chimney.

Standard Gas (3) is a configuration to check the reliability of the measured value of the chimney automatic measuring device at the remote control center 12. The remote command (remote check, RCHK) sent by the control center 12 to the business facility By receiving the data logger (Data Logger, 5) received the standard gas (Standard Gas, 3) of the standard gas supply device is opened and injected into the analyzer (Analyzer, 4).

Data Logger (5) transmits the result of measuring Standard Gas (3) at the analyzer (4) and the concentration of Standard Gas (3) to the control center (12). . Through this, the control center determines the measurement reliability of the measuring instrument based on the difference between the concentration of the standard gas (3) and the measurement indication value.

The standard gas (3) is also used to calibrate the measuring equipment in the workplace itself (resolve the error of the measured value by using the standard gas when it is determined that the reliability of the measured value is deteriorated).

Meter (Analyzer, 4) is an equipment for automatically measuring in real time the contaminant concentration in the chimney exhaust gases, metric dust, NOx, SO _2, CO, HCl, NH _3, HF, oxygen, temperature, flow rate, It outputs measured value signals such as analog (4 ~ 20mA), RS-232C, RS-485, and displays the dry-load contract interface as a measuring instrument.

Data Logger (5) collects the measured value signal and status indication signal from the analyzer (4) in real time (at least once per second) and collects 5 minutes (average) data and 30 minutes (average) data. It is a transmission device for generating and storing the data, and transmitting the data to the control center (12). The transmitted signal follows the RS-232C standard.

The Front End Processor (FEP) 6 is a communication device for unifying the communication path between the control center 12 and the data logger 5 in the case of multiple chimneys.

The modem 7 is a demodulation device for digital signals and analog signals.

The wireless controller 8 is a communication device for transmitting measurement data transmitted from a workplace using a wireless data communication environment. For example, the communication speed is 14.4 Kbps.

Self-monitoring device (Self Monitoring Apparatus, 9) is a system for retrieving the measurement data generated by the analyzer (Analyzer, 4) by itself in the workplace to use in work.

Reference numeral 10 is a dedicated line (9.6 Kbps), and reference numeral 11 is a wireless communication base station.

The control center 12 provides data collection / analysis / statistical function, real time monitoring function, automatic example / alarm transmission function, remote control / remote command function, discharge charge automatic calculation function, and the like as shown in FIGS. 1 to 4. do.

The method of the present invention as described above may be implemented as a program and stored in a computer-readable recording medium (CD-ROM, RAM, ROM, floppy disk, hard disk, magneto-optical disk, etc.).

Although the present invention has been shown and described with reference to the preferred embodiments as described above, it is not limited to the above embodiments and those skilled in the art without departing from the spirit of the present invention. Various changes and modifications will be possible.

BRIEF DESCRIPTION OF THE DRAWINGS The figure for demonstrating the example and alarm system of the chimney remote monitoring system which concerns on this invention.

2 is a view for explaining the monitoring function of the workplace chimney remote monitoring system according to the present invention

3 is a view for explaining the analysis function of the chimney remote monitoring system according to the present invention

4 is a view for explaining a remote search function of the chimney remote monitoring system according to the present invention

5 is a view for explaining a chimney remote monitoring system according to the present invention

Claims (7)

In the chimney remote monitoring system, A measuring device for measuring the pollutant concentration discharged from the one or more chimneys in real time and outputting a measured value signal and a measuring device status signal; Sending a remote search command transmitted from the control center for monitoring or controlling the one or more chimneys to the measuring instrument, collects the measured value signal and the measuring instrument status signal in real time, generates and stores the average data, and transmits to the control center. Data collection device; And It includes a standard gas supply device for injecting the standard gas to the measuring instrument by a remote search command transmitted from the control center, The standard gas supply device includes a zero gas and a span gas, and the control center may remotely determine the measurement reliability of the meter or reduce the reliability of the measured value based on a difference between the concentration of the standard gas and a measurement indication value. Chimney remote monitoring system to reduce the error of measurement when. In the chimney remote monitoring system, A measuring instrument that measures the pollutant concentration discharged from at least one chimney in real time and outputs a measured value signal and a measuring instrument status signal, and collects and stores the measured value signal and measuring instrument status signals in real time as average data, and a control center Manage the data collection device for transmitting to the standard gas supply device for injecting the standard gas into the measuring device, Send any one remote command selected from Dump command, remote search command, SETT, SETP and CCHK to the data collection device, and in particular, send a remote search command to remotely control the standard gas supply device to inject the standard gas into the measuring device. Control center to determine reliability, monitor one or more chimneys, and analyze data Chimney remote monitoring system comprising a. The method of claim 2, The standard gas supply device includes a zero gas and a span gas, and the control center may remotely determine the measurement reliability of the meter or reduce the reliability of the measured value based on a difference between the concentration of the standard gas and a measurement indication value. Chimney remote monitoring system to reduce the error of measurement when. delete The method according to claim 1 or 2, An intermediate data collection device for collecting data of the data collection device and transmitting the data to the control center when the data collection device is one or more; And Self output device for the data collecting device to output the measured value signal measured by the measuring device Chimney remote monitoring system further comprising a. The method according to claim 1 or 2, The control center is a chimney remote monitoring system for monitoring or controlling the chimney by performing any one or more of, for example, alarm system function, workplace monitoring function, analysis / statistics function and remote control function. The method according to claim 1 or 2, The chimney remote monitoring system is any one of the status of normal, calibration, malfunction, power failure and maintenance.

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