KR102025044B1 - System and method for monitoring pollution detector - Google Patents

Abstract

Meter monitoring systems and methods are disclosed. The meter monitoring system is installed for each device included in the pollutant discharge facility, and is measured by a plurality of measuring devices that measure the pollutant concentration of the combustion gas passing through each device, and a gas sample probe of the plurality of measuring devices. A gas input device for inputting a test gas having a set value, a cleaning device for cleaning the probe, a data transmission device and a data transmission device for collecting and transmitting the measured values received from a plurality of measuring devices, and controlling the gas input device and the cleaning device; Communicating through wired or wireless network. Receiving and monitoring the collected measurements, and if the monitoring detects an abnormality of the measured value, at least one of the contamination check, operation check and cleaning for the measuring instrument detected abnormality by using the gas input device and cleaning device It includes a remote management server for transmitting a control message for performing to the data transmission device.

Description

System and method for monitoring pollution detector

The present invention relates to pollutant measurement in pollutant discharge facilities, and more particularly, to a system and method for monitoring a meter for measuring pollutants.

In general, pollutant discharge facilities such as thermal power plants, incinerators, etc., emit a gas containing pollutants through a stack. At this time, the pollutant discharge facilities are provided with a purifier according to the law, and purifies the pollutant generated by using the purifier to discharge the gas.

According to the Atmospheric Environment Conservation Act, the amount of flue gas emitted is regulated by applying the emission allowance standard. As a method of measuring the amount of exhaust gas, before 1996, measurement personnel had to climb the chimney directly, insert a sensor into the measuring hole, and measure the characteristics of the exhaust gas. However, this method of measurement is dangerous and hassle, and since 1996, an automatic sensor has been installed inside the chimney, and a method of transmitting data on the emission characteristics obtained from the sensor to the central control center has begun to be used. This is called a telemetering system (TMS).

Telemetry systems installed in the chimney measure NOx, SOx, CO, O2, flue gas flow rates and flue gas temperatures.

On the other hand, depending on the workplace, not only the chimney but also a measuring device is installed at each process, and monitoring the pollution of the gas passing through each process is monitored whether the appropriate purification operation is performed for each process.

However, even if the measured value of the measuring instrument is abnormal or the measured value is manipulated in the workplace, there is a problem that can not be confirmed unless you visit the workplace directly.

In addition, the measuring instrument is always exposed to contaminants, which may be contaminated to cause errors in the measured value, and there may be a problem in that it is difficult to secure reliability of the measured value because there may always be a risk of external shock or operation.

Republic of Korea Patent Publication No. 10-0896018

The present invention provides a measurement system and method for monitoring the measurement value of the measuring instrument for measuring the concentration of pollutants generated in the pollutant discharge facility to estimate whether the measuring device is contaminated or manipulated, and to take appropriate measures accordingly. It is to provide.

According to one aspect of the invention, a meter monitoring system of a pollutant discharge facility is disclosed.

Meter monitoring system according to an embodiment of the present invention is installed for each device included in the pollutant discharge facility, a plurality of measuring instruments for measuring the pollutant concentration of the combustion gas passing through each device, the plurality of measuring devices A gas input device for introducing a test gas having a measurement value set to a gas sample collection probe, a cleaning device for cleaning the probe, and collecting and transmitting the measured values received from the plurality of measuring devices; And a data transmission device controlling the cleaning device and the data transmission device through a wired or wireless communication network. Receiving and monitoring the collected measured values, and if the abnormality of the measured value is detected through the monitoring, using the gas input device and the cleaning device, the contamination check, operation confirmation and cleaning for the measuring instrument detected abnormality Remote management server for transmitting a control message for performing at least one of the data transmission apparatus.

The test gas includes a check gas for determining whether the measured value is accurate and a plurality of operation check gases for determining whether the measured value of the measuring device is manipulated.

The plurality of operation confirmation gases are set differently from each other, and are randomly selected and introduced into the measuring device.

The remote management server, a monitoring unit for real-time monitoring the measured values of each measuring device received from the data transmission device, and through the monitoring to estimate whether or not at least one of the plurality of measuring instruments, the contamination is estimated And transmits a check request message for checking whether or not the pollution estimation measuring device is contaminated to the data transmission device, and when the contamination estimation measuring device is determined to be contaminated, a cleaning request message for cleaning the contamination estimation measuring device. A check unit for transmitting to the transmission device and a measuring device operation confirmation request message for confirming whether the operation is estimated to be operated by the estimated operation meter to the data transmission device, and when it is determined that the operation estimation measuring device is operated, the To inform you that the Includes an operation prevention part.

The monitoring unit estimates that the measuring instrument is contaminated when the variation of the measured value is large.

The monitoring unit calculates a change width of continuously received measurement values, and determines that the change width is large when the calculated change width exceeds a preset change allowance.

The monitoring unit estimates that the measuring device is contaminated when the measuring value is 0 (while an error) or the measuring value is equal to or larger than the measuring maximum value of the measuring device.

The monitoring unit stores the measured values at a preset period, and compares the measured value pattern of the previous period with the measured value pattern of the current period to estimate whether the measuring device is operated.

The monitoring unit calculates the similarity of the measured value patterns in the front and rear periods, and estimates that the measuring device is operated when the calculated similarity is equal to or more than a preset similarity threshold.

The monitoring unit calculates a difference value between each value of the measured value pattern of the previous period and each value of the measured value pattern of the current period, and when the average of the calculated difference values is less than a preset difference threshold, the measuring device is operated. Estimate.

The data transmission device transmits a control command to the gas injecting device so that the gas injecting device injects the gas for inspection into the contamination estimation meter in response to the reception of the measuring device check request message, and the inspection unit is configured to In accordance with the input, the contamination estimation measurement value measured by the contamination estimation measuring instrument is checked whether it is out of the set value range of the gas for inspection to determine whether the contamination estimation measuring instrument is contaminated.

The inspection unit determines that the pollution estimation meter is contaminated when the pollution estimation measurement value is out of the set value range, and the data transmission device cleans the pollution estimation meter by the cleaning device according to the reception of the measurement message for cleaning the measurement device. Control commands are sent to the cleaning device.

The manipulation prevention unit generates a random number for randomly selecting the plurality of manipulation confirmation gases, and transmits the measuring instrument manipulation confirmation request message including the generated random number to the data transmission device.

The data transmission device transmits a control command to the gas input device such that the gas input device sequentially inputs the plurality of operation confirmation gases to the operation estimation measurer according to the random number upon receipt of a measuring device operation confirmation request message. The operation prevention unit may determine whether the operation estimation measuring instrument is operated by checking whether or not the measured value measured by the operation estimation measuring instrument is out of the set value range of each operation confirmation gas according to the input of the plurality of operation confirmation gases. Determine.

The cleaning device controls the high pressure air supply and the distilled water supply according to a control command of the high pressure air supply for supplying high pressure air into the probe, the distilled water supply for introducing distilled water into the probe, and the control command of the data transmission device. And a controller, wherein the controller controls the distilled water to be input after the high pressure air is introduced into the probe, and the high pressure air is input to remove the distilled water remaining in the probe by the distilled water. To control.

According to another aspect of the present invention, there is disclosed a meter monitoring method installed by each device included in the pollutant discharge facility is performed by a system for monitoring a plurality of meters for measuring the pollutant concentration of the combustion gas passing through each device do.

In a measuring method monitoring method according to an embodiment of the present invention, the data transmission device for collecting the measured values of the plurality of measuring instruments transmitting the collected measurement values to a remote management server connected via a wired or wireless communication network, the remote management server Monitoring the collected measurement values for each of the plurality of meters, estimating, by the remote management server, whether or not at least one of the plurality of meters is polluted through the monitoring, and when the contamination is estimated, Transmitting, by the remote management server, a measurement check request message for checking whether the contamination is estimated to be contamination, to the data transmission device, and when the contamination estimation meter is determined to be contaminated, the remote management server Cleaning request mesh for cleaning the contamination estimation meter Transmitting, to the data transmission device, a measurement device operation confirmation request message for confirming whether or not the operation estimation meter is operated by the remote management server when the operation is estimated. And if the operation estimation meter is determined to have been operated, the remote management server notifying that the operation estimation meter has been operated.

After the step of transmitting the meter check request message to the data transmission device, the data input device causes the gas input device to inject the check gas into the pollution estimation meter according to the reception of the meter check request message. Transmitting the to the gas input device and the remote management server checks whether the pollution estimation measurement value measured by the pollution estimation meter is outside the set value range of the gas for inspection according to the input of the gas for inspection. The method may further include determining whether the contamination estimation meter is contaminated.

The transmitting of the measuring device operation confirmation request message to the data transmission device may include: generating, by the remote management server, a random number for randomly selecting the plurality of operation confirmation gases; and generating, by the remote management server, the remote management server. And transmitting the meter operation confirmation request message including a random number to the data transmission device.

After the measuring device operation confirmation request message is transmitted to the data transmission device, the gas input device may supply the plurality of operation confirmation gases according to the random number when the data transmission device receives the measuring device operation confirmation request message. Transmitting a control command to the gas input device so as to sequentially input the operation estimation measuring instrument; and the measured value measured by the operation estimation measuring instrument according to the input of the plurality of operation confirmation gases by the remote management server is checked for each operation. Determining whether the operation estimation measuring instrument is operated by checking whether the setting value range of the molten gas is out of range.

Meter monitoring system and method according to an embodiment of the present invention, by monitoring the measured value of the meter for measuring the concentration of pollutants generated in the pollutant discharge facility to estimate whether the meter is contaminated or operated, and accordingly take appropriate measures You can get drunk.

1 is a view showing an example of a pollutant discharge facility to which a meter monitoring system according to an embodiment of the present invention is applied.
2 is a view schematically showing a detailed configuration of a measuring instrument monitoring system according to an embodiment of the present invention.
3 is a view schematically showing a configuration of a cleaning apparatus according to an embodiment of the present invention.
4 and 5 are flowcharts illustrating a measuring instrument monitoring method according to an embodiment of the present invention.
6 is a flow chart illustrating a meter monitoring method according to another embodiment of the present invention.

As used herein, the singular forms "a", "an" and "the" include plural forms unless the context clearly indicates otherwise. In this specification, terms such as “consisting of” or “comprising” should not be construed as necessarily including all of the various components or steps described in the specification, and some of the components or some steps It should be construed that it may not be included or may further include additional components or steps. In addition, the terms "... unit", "module", etc. described in the specification mean a unit for processing at least one function or operation, which may be implemented in hardware or software or a combination of hardware and software. .

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

1 is a view showing an example of a pollutant discharge facility to which a meter monitoring system according to an embodiment of the present invention is applied. More specifically, FIG. 1 schematically shows an example in which a meter monitoring system according to an embodiment of the present invention is applied to a thermal power plant. In FIG. 1, a thermal power plant is described as an example of a pollutant discharge facility, but the measuring system monitoring system according to an embodiment of the present invention is a facility for discharging exhaust gas including a pollutant after combustion, such as an incinerator, as well as a thermal power plant. If you can apply.

First, referring to FIG. 1, the thermal power plant generates a steam by burning fossil fuels such as coal and / or petroleum to heat water to generate steam. By treating nitrogen oxide (NOx) from the turbine 11 rotating with steam, the generator 12 producing electric power by the rotation of the turbine 11, and the combustion gas discharged by the combustion of fossil fuel in the boiler 10 The denitrification apparatus 20 which reduces the nitrogen oxide concentration in combustion gas below a reference value, the dust collector 30 which processes dust from the combustion gas which passed through the denitrification apparatus 20, and keeps it below the atmospheric dust emission standard of combustion gas, and a dust collector Oyster for discharging the combustion gas passed through the desulfurization unit 40 and the desulfurization unit 40 for treating sulfur oxide (SOx) from the combustion gas passed through the (30) to reduce the sulfur oxide concentration in the combustion gas below the reference value. It may be configured to include a stack (50).

1, the meter monitoring system according to an embodiment of the present invention includes a plurality of meters 101, 102, 103, 104, a data transmission device 200, and a remote management server 300. Can be.

The plurality of measuring devices 101, 102, 103, 104 may be installed at the rear end (gas discharge part) of the boiler 10, the denitrification apparatus 20, the dust collector 30, and the desulfurization apparatus 40, respectively. That is, each of the plurality of measuring devices 101, 102, 103, 104 is contaminated with the combustion gas exhausted from the boiler 10, the denitrification device 20, the dust collector 30, and the desulfurization device 40. Material concentration can be measured.

Of course, although not shown in the figure, the concentration of the pollutant may be measured by using a measuring instrument installed in the chimney 50 also the combustion gas finally discharged through the chimney (50). In general, the measured value measured in the chimney 50 is transmitted to the central control center managed by the state in accordance with the law.

However, in the present specification, in order to facilitate the management of own pollutant emission management and the support of the measurement equipment provider in the workplace, the meter monitoring system according to an embodiment of the present invention is each device (for example, the boiler 10) It will be described on the assumption that monitoring is performed based on the measured values measured by the denitrification apparatus 20, the dust collector 30, and the desulfurization apparatus 40.

The data transmission device 200 is communicatively connected to each of the measuring devices 101, 102, 103, 104, receives and stores the measured values of each measuring device 101, 102, 103, 104, and collects the received measured values. Send to the remote management server (300).

The remote management server 300 monitors the measurement values of the measuring devices 101, 102, 103, and 104 received from the data transmission device 200, and transmits a control message to the data transmission device 200 for processing based on the analysis result. Send it.

Such a detailed configuration of the measuring instrument monitoring system according to an embodiment of the present invention will be described later in detail with reference to FIG. 2.

2 is a diagram schematically showing a detailed configuration of a measuring instrument monitoring system according to an embodiment of the present invention.

2, the meter monitoring system according to an embodiment of the present invention includes a meter 100, a gas injection device 110, a cleaning device 120, a data transmission device 200, and a remote management server 300. Can be configured. Hereinafter, a description overlapping with the above description with reference to FIG. 1 will be omitted.

As described above with reference to FIG. 1, the measuring device 100 includes a plurality of measuring devices 101, 102, 103, 104 installed in each device of the pollutant discharge facility.

In order to test the measuring device 100, the gas input device 110 is a device for introducing a test gas having a set value to the measuring device 100, and includes a test gas tank for storing the test gas. For example, the test gas may be introduced into the gas sample collection probe of the measuring device 100. Thus, the test gas tank and the gas sample collection probe are connected through the pipe, the pipe is provided with a valve for opening and closing the passage of the pipe, the gas injection device 110 according to the control command of the data transmission device 200 Can be opened and closed.

According to an embodiment of the present invention, the test gas may include at least one inspection gas and a plurality of operation confirmation gases.

Here, the inspection gas is for determining whether the measured value of the measuring device 100 is correct.

The plurality of operation confirmation gases are used to determine whether or not the measurement value of the measurement device 100 is unexpectedly operated. To this end, the plurality of operation checking gases may be set differently from each other, and may be randomly selected and introduced into the measuring device 100. For example, a plurality of operation confirmation gases may be assigned serial numbers, and the remote management server 300 generates a random number by randomly arranging the assigned serial numbers, and generates the generated random numbers in the data transmission apparatus. And transmit to 200. Accordingly, the data transmission device 200 may control the gas input device 110 to sequentially input the operation confirmation gas corresponding to the random number to the measuring device 100 according to the received random number.

 The cleaning device 120 is a device for cleaning the gas sample collection probe of the measuring device 100 in order to improve the measurement accuracy of the measuring device 100 which may be contaminated by being always exposed to contaminants.

3 is a view schematically showing a configuration of a cleaning apparatus according to an embodiment of the present invention.

Referring to FIG. 3, the cleaning device 120 according to the embodiment of the present invention may include a high pressure air supply 121, a distilled water supply 122, and a controller 123.

The high pressure air supplier 121 injects high pressure air into the gas sample collection probe. For example, the high pressure air supply 121 may be a device such as an air compressor.

The distilled water supplier 122 inputs distilled water into the gas sample collection probe.

The controller 123 controls the operation of the high pressure air supplier 121 and the distilled water supply 122 to clean the gas sample collection probe according to the control command of the data transmission device 200. For example, the controller 123 may first control high pressure air and then distilled water to be introduced into the gas sample collecting probe, and then remove distilled water remaining in the gas sample collecting probe by adding distilled water. In order to control the high pressure air in order to control. Each control operation and / or overall control operation of the controller 123 may be repeated according to a preset number of times.

Referring back to FIG. 2, the data transmission device 200 collects the measured values received from the measuring device 100 and transmits the collected measurement values to the remote management server 300 and according to a control message received from the remote management server 300. The measuring device 100, the gas injection device 110, and the cleaning device 120 are controlled. To this end, the data transmission device 200 and the remote management server 300 is connected through a wired or wireless communication network.

The remote management server 300 monitors the measured values of the measuring devices 100 received from the data transmission device 200 and detects an abnormality of the measured values through monitoring, and the gas input device 110 and the cleaning device ( Using 120, a control message for performing contamination check, operation check, and cleaning on the corresponding measuring device 100 is transmitted to the data transmission device 200.

Referring to FIG. 2, the remote management server 300 includes a communication unit 310, a monitoring unit 320, a checker 330, and an operation prevention unit 340.

The communication unit 310 communicates with an external device through a wired or wireless communication network. For example, the communication unit 310 receives the measurement values of the measuring device 100 from the data transmission device 200 located at a remote location, and transmits the measured values to the monitoring unit 320, the inspection unit 330, and the operation prevention unit 340. The control message generated by the data transmission apparatus 200 may be transmitted.

The monitoring unit 320 monitors the measured values of each measuring device 100 received from the data transmission apparatus 200 in real time, and detects an abnormal phenomenon of the measured values through monitoring, thereby determining whether the measuring device 100 is contaminated or not. Estimate

For example, the monitoring unit 320 may estimate that the measuring device 100 is contaminated when the change value of the measuring value is large. Here, the monitoring unit 320 may calculate the change width of the continuously measured measurement values, and if the calculated change width exceeds the preset change allowance value, may determine that the change width of the measured value is large.

In addition, the monitoring unit 320 may estimate that the measuring device 100 is contaminated even when the measuring value is 0 (while an error) or the measuring value is equal to or larger than the maximum measurement value of the measuring device 100.

In this case, the monitoring unit 320 may finally estimate that the measuring device 100 is contaminated only when the number of the measurement values showing the abnormal change is greater than or equal to a preset number in order to increase the accuracy of the detection of the abnormal change of the measurement value.

Meanwhile, the monitoring unit 320 may store the measured values at a predetermined period, and compare the measured value pattern of the previous period with the measured value pattern of the current period to estimate whether the measuring device 100 is operated.

That is, the monitoring unit 320 may calculate the similarity of the measured value patterns in the front and rear periods, and when the calculated similarity is greater than or equal to a preset similarity threshold, the monitoring unit 320 may estimate that the measuring device 100 has been operated. Here, the similarity may be calculated using the similarity distance of each time series value of the before and after measured value pattern, such as the euclidean distance.

Alternatively, the monitoring unit 320 calculates a difference value between each value of the measured value pattern of the previous period and each value of the measured value pattern of the current period, and when the average of the calculated difference values is less than a preset difference threshold, the measuring device It can be assumed that 100 has been manipulated.

In this case, in order to increase the accuracy of estimating whether the measuring device 100 is operated, the monitoring unit 320 finally repeats the comparison of the measured value pattern of the previous period with the measured value pattern of the current period by a predetermined number of times and finally measures the measuring unit 100. ) Can also be estimated.

When the checker 330 estimates the contamination of the meter 100 by the monitoring unit 320, the checker 330 transmits a meter check request message for checking whether the meter 100 is contaminated to the data transmission apparatus 200.

Here, the data transmission device 200 transmits a control command to the gas injection device 110 so that the gas injection device 110 inputs the gas for inspection to the measurement device 100 according to the reception of the measurement device check request message.

The checker 330 determines whether the measuring device 100 is contaminated by checking whether the measured value measured by the measuring device 100 is outside the set value range of the checking gas according to the input of the checking gas.

The checker 330 determines that the measuring device 100 is contaminated when the measured value is out of the set value range of the checking gas, and sends a measuring device cleaning request message for cleaning the measuring device 100 to the data transmission device 200. send. The data transmission device 200 transmits a control command to the cleaning device 120 so that the cleaning device 120 cleans the meter 100 according to the reception of the meter cleaning request message.

When the operation of the measuring device 100 is estimated by the monitoring unit 320, the operation preventing unit 340 transmits a measuring device operation confirmation request message for confirming whether the measuring device 100 is operated to the data transmission device 200. do. At this time, the operation prevention unit 340 generates a random number for randomly selecting a plurality of operation confirmation gas, and transmits a measuring device operation confirmation request message including the generated random number to the data transmission device 200.

In this case, the data transmission device 200 inputs a control command to the gas input device 110 to sequentially input a plurality of operation confirmation gases to the measurement device 100 according to a random number in response to the reception of the measurement operation request message. Transmit to device 110.

The operation prevention unit 340 checks whether the measured values measured by the measuring device 100 are out of the set value range of each operation checking gas according to the sequential input of the plurality of operation checking gases according to the random number. Determine whether or not) is operated.

When the at least one measured value deviates from the set value of the operation confirmation gas, the operation prevention unit 340 determines that the measuring device 100 is operated, and the operation of the measuring device 100 is controlled by the manager of the remote management server 300 and / Or notify the person responsible for the pollutant discharge facility. For example, the operation prevention unit 340 is connected to the remote management server 300, the output device for outputting the image and sound, the manager terminal of the remote management server 300, the manipulator terminal of the pollutant discharge facility, etc. You can send a message to warn you.

4 and 5 are flowcharts illustrating a measuring instrument monitoring method according to an embodiment of the present invention.

In operation S410, the measurement device 100 transmits the measurement value to the data transmission device 200, and the data transmission device 200 collects the measurement values received from each measurement device 100 and transmits the measurement value to the remote management server 300. do. As described above, the measuring device 100 may be installed in each device of the pollutant discharge facility and measure the pollutant concentration of the combustion gas passing through each device.

In operation S415, the remote management server 300 monitors the measured values for each measuring device 100 as the measured values are received from the data transmission apparatus 200.

In operation S420, the remote management server 300 determines whether the measuring device 100 is estimated to be contaminated through monitoring.

For example, when the change value of the measurement value is large, the remote management server 300 may estimate that the measuring device 100 is contaminated. Here, the remote management server 300 may calculate the change width of the continuously measured measurement values, and if the calculated change width exceeds the preset change allowance value, may determine that the change width of the measured value is large. Also, the remote management server 300 may estimate that the measuring device 100 is contaminated even when the measuring value is 0 (while an error) or the measuring value is equal to or larger than the measuring maximum value of the measuring device 100. In this case, the remote management server 300 may finally estimate that the measuring device 100 is contaminated only when the number of measurement values showing the abnormal change is more than a preset number in order to increase the accuracy of detection of the abnormal change of the measurement value.

In step S425, when the remote management server 300 is estimated to be contaminated, the remote management server 300 transmits a meter check request message for checking whether the meter 100 is contaminated to the data transmission apparatus 200.

In operation S430, the data transmission device 200 transmits a control command to the gas injection device 110 such that the gas injection device 110 inputs the gas for inspection to the measurement device 100 according to the reception of the measurement device check request message.

In operation S435, the gas input device 110 inputs the gas for inspection to the measuring device 100 according to the control command of the data transmission device 200.

In operation S440, the measuring device 100 transmits the measured value for the checked gas to the remote management server 300 through the data transmission device 200.

In step S445, the remote management server 300 checks whether the measured value according to the input of the check gas is out of the set value range of the check gas and determines whether the measuring device 100 is contaminated.

In operation S450, when the measured value deviates from the set value of the gas for checking, the remote management server 300 determines that the measuring device 100 is contaminated, and transmits a measuring device cleaning request message for cleaning the measuring device 100. Send to 200.

In operation S455, the data transmission device 200 transmits a control command to the cleaning device 120 such that the cleaning device 120 cleans the measurement device 100 according to the reception of the measurement device cleaning request message.

In operation S460, the cleaning apparatus 120 performs the cleaning of the measuring apparatus 100 according to the control command of the data transmission apparatus 200. Here, the cleaning device 120 may clean the gas sample collection probe of the measuring device 100. For example, the cleaning device 120 may first control high distilled water after the high pressure air is introduced into the gas sample collecting probe, and then distilled water remaining inside the gas sample collecting probe by distilled water. In order to remove the high pressure air can be controlled. Input of high pressure air and input of distilled water may be repeated a predetermined number of times, respectively, and the order of setting may be changed.

In operation S465, rechecking of the measuring device 100 is performed by using the gas for checking according to the cleaning of the measuring device 100, and recleaning or monitoring of the measured value is resumed according to the performed rechecking result.

As a result of the determination in step S420, if the measurement device 100 is not estimated to be contaminated, the process proceeds to step S510.

In operation S510, the remote management server 300 determines whether the measuring device 100 is estimated to have been operated through monitoring.

For example, the remote management server 300 may store the measured values at a predetermined period and compare the measured value pattern of the previous period with the measured value pattern of the current period to estimate whether the measuring device 100 is operated. That is, the remote management server 300 may calculate the similarity of the measured value patterns in the front and rear periods, and when the calculated similarity is greater than or equal to a preset similarity threshold, the remote management server 300 may estimate that the measuring device 100 has been operated. Here, the similarity may be calculated using the similarity distance of each time series value of the before and after measured value pattern, such as the euclidean distance. Alternatively, the remote management server 300 calculates a difference value between each value of the measured value pattern of the previous period and each value of the measured value pattern of the current period, and when the average of the calculated difference values is less than a preset difference threshold, It can be assumed that the measuring device 100 has been operated. At this time, the remote management server 300 after repeating the comparison of the measurement value pattern of the previous cycle and the measurement value pattern of the current cycle by a predetermined number of times in order to increase the accuracy of the estimation of the operation of the measuring instrument 100, 100 may be estimated.

In step S515, the remote management server 300 generates a random number for randomly selecting a plurality of operation confirmation gases when it is estimated that the measuring device 100 has been operated.

In operation S520, the remote management server 300 transmits a measuring device operation confirmation request message including the generated random number to the data transmission device 200.

In operation S525, the data transmission device 200 inputs a control command to the gas input device 110 to sequentially input the operation confirmation gas to the measurement device 100 according to the random number according to the reception of the measurement operation request message. Transmit to device 110.

In operation S530, the gas input device 110 sequentially inputs the operation confirmation gas according to the random number to the measuring device 100 according to the control command of the data transmission device 200.

In operation S535, the measuring apparatus 100 transmits the measured values measured according to the sequential input of the plurality of operation confirmation gases according to the random number to the remote management server 300 through the data transmission apparatus 200.

In operation S540, the remote management server 300 determines whether the measurement device 100 is operated by checking whether each measurement value according to the input of the plurality of operation confirmation gases is out of a set value range of the operation confirmation gas. .

In operation S545, when the at least one measured value deviates from the setting value of the operation check gas, the remote management server 300 determines that the measuring device 100 has been operated, and the operation of the measuring device 100 is controlled by the remote management server 300. Notifications to the manager and / or person in charge of the pollutant discharge facility.

In operation S550, after the manager of the remote management server 300 and / or the person in charge of the pollutant discharge facility takes action according to the notification of the operation of the measuring device 100, monitoring may be resumed.

6 is a flowchart illustrating a measuring device monitoring method according to another embodiment of the present invention.

In operation S610, the remote management server 300 receives the measurement values of each measuring device 100 from the data transmission apparatus 200 and monitors the measuring values for each measuring device 100.

In operation S620, the remote management server 300 determines whether the measurement value is abnormal through monitoring. Here, the determination of the abnormality of the measured value may be made through estimation of whether the measuring device 100 is contaminated or not, as described above.

In operation S630, when the remote management server 300 determines that the measured value is abnormal, the remote management server 300 transmits the measuring device cleaning request message to the data transmission device 200. Accordingly, the data transmission device 200 transmits a control command to the cleaning device 120, and the cleaning device 120 is cleaned by the cleaning device 120 according to the control command.

In operation S640, the remote management server 300 transmits a meter check request message to the data transmission apparatus 200 to confirm whether the meter 100 is decontaminated according to the cleaning of the meter 100. Accordingly, the data transmission device 200 transmits a control command to the gas input device 110, and the gas input device 110 inputs the gas for inspection to the measuring device 100 according to the control command. Subsequently, the remote management server 300 may determine whether the measuring device 100 is contaminated by receiving the measured value measured according to the input of the gas for inspection from the data transmission apparatus 200. If it is determined that the measuring device 100 is contaminated even after the cleaning of the measuring device 100, the cleaning of the measuring device 100 may be performed again.

In step S650, the remote management server 300 generates a random number, and transmits a measuring device operation confirmation request message including the generated random number to the data transmission apparatus 200. Through this, the operation confirmation gas according to the random number is sequentially input to the measuring device 100, the remote management server 300, each measured value according to the input of a plurality of operation confirmation gas is a set value of the operation confirmation gas. By checking whether it is out of range, it may be determined whether the measuring device 100 is operated.

As described above, in the measuring apparatus monitoring method according to another embodiment of the present invention illustrated in FIG. 6, when the abnormality of the measured value is detected, the measuring apparatus 100 is cleaned immediately. After that, by checking the check and operation of the measuring device 100 is performed, there is a characteristic that the procedure is simplified.

On the other hand, the components of the above-described embodiment can be easily identified from a process point of view. That is, each component can be identified as a respective process. In addition, the process of the above-described embodiment can be easily understood in terms of the components of the apparatus.

In addition, the technical contents described above may be embodied in the form of program instructions that may be executed by various computer means and may be recorded in a computer readable medium. The computer readable medium may include program instructions, data files, data structures, etc. alone or in combination. Program instructions recorded on the media may be those specially designed and constructed for the purposes of the embodiments, or they may be of the kind well-known and available to those having skill in the computer software arts. Examples of computer-readable recording media include magnetic media such as hard disks, floppy disks, and magnetic tape, optical media such as CD-ROMs, DVDs, and magnetic disks, such as floppy disks. Magneto-optical media, and hardware devices specifically configured to store and execute program instructions, such as ROM, RAM, flash memory, and the like. Examples of program instructions include not only machine code generated by a compiler, but also high-level language code that can be executed by a computer using an interpreter or the like. The hardware device may be configured to operate as one or more software modules to perform the operations of the embodiments, and vice versa.

The embodiments of the present invention described above are disclosed for the purpose of illustration, and those skilled in the art having various ordinary knowledge of the present invention may make various modifications, changes, and additions within the spirit and scope of the present invention. Should be considered to be within the scope of the following claims.

10: boiler
20: denitrification apparatus
30: dust collector
40: desulfurization apparatus
50: chimney
100: measuring instrument
110: gas injection device
120: cleaning device
200: data transmission device
300: remote management server
310: communication unit
320: monitoring unit
330: inspection unit
340: operation prevention part

Claims (19)

In the meter monitoring system of pollutant discharge facility,
A plurality of measuring devices installed for each device included in the pollutant discharge facility and configured to measure the pollutant concentration of the combustion gas passing through each device;
A gas input device for inputting a test gas having a measured value set to a gas sample collection probe of the plurality of measuring devices;
A cleaning device for cleaning the probe;
A data transmission device that collects and transmits measurement values received from the plurality of measurement devices, and controls the gas injection device and the cleaning device; And
The data transmission device is communicatively connected through a wired or wireless communication network. Receiving and monitoring the collected measured values, and if the abnormality of the measured value is detected through the monitoring, using the gas input device and the cleaning device, the contamination check, operation confirmation and cleaning for the measuring instrument detected abnormality Remote control server for transmitting a control message for performing at least one of the data transmission device,
The remote management server may include: a monitoring unit configured to monitor, in real time, the measured values of each measuring device received from the data transmission device, and to estimate whether or not at least one of the plurality of measuring devices is contaminated through the monitoring; Request for cleaning of the pollution estimation meter when the contamination estimation meter is transmitted to the data transmission device, and if it is determined that the pollution estimation meter is contaminated, A check unit for transmitting a message to the data transmission device; And transmits a measuring device operation confirmation request message for confirming whether the operation is estimated to be operated by the operation estimation measuring instrument to the data transmission device, and notifies that the operation estimation measuring instrument is operated when it is determined that the operation estimation measuring instrument is operated. Including tamper resistant parts,
The monitoring unit stores the measured values at a preset period, compares the measured value pattern of the previous period with the measured value pattern of the current period, and estimates whether the measuring device is operated.
The monitoring unit calculates the similarity of the measured value pattern of the before and after period, and when the calculated similarity is equal to or more than a preset similarity threshold, estimates that the measuring device is operated.
The monitoring unit calculates a difference value between each value of the measured value pattern of the previous period and each value of the measured value pattern of the current period using the Euclidean distance, and when the average of the calculated difference values is less than a preset difference threshold, Meter monitoring system, characterized in that the meter is assumed to have been operated.
The method of claim 1,
And the test gas includes a check gas for determining whether the measured value is accurate and a plurality of operation check gases for determining whether the measured value of the measuring device is manipulated.
The method of claim 2,
The plurality of operation check gases are set differently from each other, the measurement value monitoring system, characterized in that randomly selected and fed into the measuring device.
delete The method of claim 1,
The monitoring unit measuring system, characterized in that for estimating that the measuring instrument is contaminated when the change in the measured value is large.
The method of claim 5,
And the monitoring unit calculates a change width of continuously measured measurement values, and determines that the change width is large when the calculated change width exceeds a preset change allowance value.
The method of claim 5,
The measuring unit monitoring system, characterized in that the measuring unit is contaminated if the measurement value is not measured (zero error) or the measured value is greater than the measurement maximum value of the meter.
delete delete delete The method of claim 1,
The data transmission device transmits a control command to the gas input device such that the gas input device inputs a gas for inspection to the pollution estimation meter in response to the reception of the measuring device check request message.
The inspection unit determines whether the pollution estimation meter is contaminated by checking whether the pollution estimation measurement value measured by the pollution estimation meter is outside the set value range of the inspection gas according to the input of the inspection gas. Monitoring system.
The method of claim 11,
The inspection unit determines that the pollution estimation meter is contaminated when the pollution estimation measurement value is out of the set value range,
And the data transmission device transmits a control command to the cleaning device such that the cleaning device cleans the contamination estimation meter upon receipt of the meter cleaning request message.
The method of claim 1,
The manipulation preventing unit generates a random number for randomly selecting the plurality of operation confirmation gases, and transmits the measuring device operation confirmation request message including the generated random number to the data transmission device. Monitoring system.
The method of claim 13,
The data transmission device transmits a control command to the gas input device such that the gas input device sequentially inputs the plurality of operation confirmation gases to the operation estimation measurer according to the random number upon receipt of a measuring device operation confirmation request message. ,
The operation prevention unit determines whether or not the operation estimation measuring instrument is operated by checking whether or not the measured value measured by the operation estimation measuring instrument is outside the set value range of each operation confirmation gas according to the input of the plurality of operation confirmation gases. Meter monitoring system, characterized in that.
The method of claim 1,
The cleaning device,
A high pressure air supplier for injecting high pressure air into the probe;
A distilled water supplier for introducing distilled water into the probe;
A controller for controlling the high pressure air supply and the distilled water supply according to a control command of the data transmission device;
The controller controls the distilled water to be input after the high pressure air is introduced into the probe, and the high pressure air is controlled to remove the distilled water remaining in the probe by the distilled water. Meter monitoring system.
In the measuring device monitoring method performed by a system for monitoring a plurality of measuring devices installed for each device included in the pollutant discharge facility for measuring the pollutant concentration of the combustion gas passing through each device,
Transmitting, by the data transmission device collecting the measured values of the plurality of measuring devices, the collected measured values to a remote management server connected through a wired or wireless communication network;
Monitoring, by the remote management server, the collected measurement values by the plurality of meters;
Estimating, by the remote management server, whether or not at least one of the plurality of meters is polluted through the monitoring;
When the contamination is estimated, transmitting, by the remote management server, a measurement device check request message for checking whether the contamination is estimated by the contamination estimation meter to the data transmission device;
Transmitting, by the data transmission device, a control command to the gas input device such that the gas input device inputs a gas for inspection to the pollution estimation meter in response to the reception of the measuring device check request message;
Determining, by the remote management server, whether or not the pollution estimation meter is contaminated by checking whether the pollution estimation measurement value measured by the pollution estimation meter is outside the set value range of the gas for inspection according to the input of the inspection gas; ;
When the contamination estimation meter is determined to be contaminated, transmitting, by the remote management server, a cleaning request message for cleaning the pollution estimation meter to the data transmission device;
The Euclidean distance is used to calculate the difference between each value of the measured value pattern of the previous period and each value of the measured value pattern of the current period, and if the average of the calculated difference values is less than a preset difference threshold, the instrument operates. Estimating that
Transmitting, by the remote management server, a meter operation confirmation request message to the data transmission device to confirm whether the operation is estimated by the remote control server;
In response to the data transmission device receiving a measuring device operation confirmation request message, the gas input device transmits a control command to the gas inputting device to sequentially input the plurality of operation confirmation gases to the operation estimation measuring device according to the random number. Making;
The remote management server determines whether the operation estimation measuring instrument is operated by checking whether the measured value measured by the operation estimation measuring instrument is outside the set value range of each operation confirmation gas according to the input of the plurality of operation confirmation gases. Making; And
If it is determined that the manipulation estimation meter has been operated, the remote management server notifies that the manipulation estimation meter has been operated;
The step of transmitting the measuring device operation confirmation request message to the data transmission device,
Generating a random number for the remote management server to randomly select the plurality of operation confirmation gases; And
And transmitting, by the remote management server, the meter operation confirmation request message including the generated random number to the data transmission device.

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