Search

KR-102959851-B1 - STATE OF SAMPLING GAS MONITORING SYSTEM FOR CONTINUOUS EMISSION MONITORING SYSTEM BASED ON DIGITAL TWIN

KR102959851B1KR 102959851 B1KR102959851 B1KR 102959851B1KR-102959851-B1

Abstract

The present invention relates to a sampling gas state monitoring system for continuous exhaust gas monitoring equipment. More specifically, it provides a sampling gas processing state monitoring system for continuous exhaust gas monitoring equipment that enables monitoring of the temperature, humidity, flow rate, and pressure status of the sampling gas at one end of the continuous exhaust gas monitoring equipment. By checking the temperature, humidity, flow rate, and pressure status of the sampling gas in real time, the system enables monitoring of the status of the pretreatment equipment within the continuous exhaust gas monitoring system. Furthermore, it enables rapid response to the occurrence of an abnormality in the pretreatment equipment through the monitoring, thereby improving the reliability of the continuous exhaust gas monitoring data. In particular, by visualizing and providing the continuous exhaust gas monitoring equipment and sampling gas state monitoring information based on a digital twin, the system enables rapid analysis of the cause and repair procedure and immediate response through a virtual environment and real-time data linkage in the event of an abnormality in the monitoring equipment or gas state, thereby improving efficiency and enabling rapid problem resolution.

Inventors

  • 윤희성
  • 김종민
  • 이창우

Assignees

  • 주식회사 디에스피

Dates

Publication Date
20260511
Application Date
20251013

Claims (5)

  1. In a system for monitoring the state of a sampled gas installed at one end of a continuous exhaust gas monitoring device using a sampling method, A state measuring unit (100) for measuring the state of the sampling gas; A state determination unit (200) that receives a sampling gas state signal measured by the state measurement unit (100) and determines the state of the sampling gas based on the received sampling gas state signal; and A central control unit (300) that notifies the worker and manager of the sampling gas status information of the above-mentioned status determination unit (200); wherein The above state measuring unit (100) is, A plurality of state signal measuring means (110) for measuring the state signal of the sampling gas; A state signal receiving unit (120) that receives a plurality of state signals measured by the state signal measuring means (110); A state signal processing unit (130) that supplies the state signals received from the state signal receiving unit (120) to corresponding state signal storage units (140); A status signal storage unit (140) that receives a status signal supplied from the status signal processing unit (130), converts it into data, and stores it; and A first communication unit (150) that communicates with the state determination unit (200) and provides the state signal stored in the state signal storage unit (140) to the state determination unit (200); The above state determination unit (200) is, A second communication unit (210) that communicates with the first communication unit (150) and receives a status signal; A judgment unit (220) that determines the state of the sampling gas based on the received state signal; and It includes a third communication unit (230) that communicates with the central control unit (300) and provides sampling gas status information determined by the judgment unit (220) to the central control unit (300). The above state signal processing unit (130) includes an amplification unit (130-1) that amplifies the state signal received from the state signal receiving unit (120). The above status signal storage unit (140) includes an ADC (140-1) that receives a status signal supplied from the status signal processing unit (130), converts it into a digital signal, and then converts it into data. The above central control unit (300) is, A fourth communication unit (310) that communicates with the third communication unit (230) and receives sampling gas status information; A notification information determining unit (320) that determines a character, color, sound, or number to display the status information based on a display classification for each classified status information corresponding to the received sampling gas status information; The above-mentioned exhaust gas continuous monitoring equipment and the above-mentioned notification information determined by the notification information determination unit (320) are visualized based on a digital twin by a digital twin generation unit (330); and It includes a fifth communication unit (340) that communicates with a worker's terminal or a manager's terminal and provides digital twin-based sampling gas state information visualized by the digital twin generation unit (330) to the worker's terminal or the manager's terminal; The above judgment unit (220) is, A learning module (221) that stores and learns state signal information measured by the state measuring unit (100) for a certain period of time in a normal state; and It includes a judgment module (222) that determines whether there is an abnormality in the state of the sampling gas by comparing the state signal information learned by the learning module (221) with the state signal information generated in real time by the state measurement unit (100). The above judgment module (222) is, A state signal data storage unit (222-1) that stores learned state signal information and real-time generated state signal information; A change value calculation unit (222-2) that calculates a change value by substituting real-time generated state signal information into the learned state signal information above; and A sampling gas state monitoring system for a digital twin-based exhaust gas continuous monitoring device, characterized by including a state derivation unit (222-3) that determines the state by applying the above change value to previously learned state classification information.
  2. In paragraph 1, The above status signal includes one or more of the temperature, humidity, flow rate, and pressure of the sampling gas, and The above state signal measuring means (110) includes a temperature sensor (110-1) for measuring temperature, a humidity sensor (110-2) for measuring humidity of the sampling gas, a flow sensor (110-3) for measuring the flow rate of the sampling gas, and a pressure sensor (110-4) for measuring the pressure of the sampling gas. A sampling gas state monitoring system for a digital twin-based exhaust gas continuous monitoring device, characterized in that the above-mentioned state signal storage unit (140) includes: a temperature measurement signal storage unit (141) that converts a temperature measurement signal into data and stores it; a humidity measurement signal storage unit (142) that converts a humidity measurement signal into data and stores it; a flow rate measurement signal storage unit (143) that converts a flow rate measurement signal into data and stores it; and a pressure measurement signal storage unit (144) that converts a pressure measurement signal into data and stores it.
  3. delete
  4. delete
  5. In paragraph 1, The above change value calculation unit (222-2) is, A first change value calculation unit (222-2a) that calculates a change value based on the temperature of the sampling gas; A second change value calculation unit (222-2b) that calculates a change value based on the humidity of the sampling gas; A third change value calculation unit (222-2c) that calculates a change value based on the flow rate of the sampling gas; and A sampling gas state monitoring system of a digital twin-based exhaust gas continuous monitoring device, characterized by including a fourth change value calculation unit (222-2d) that calculates a change value based on the pressure of the sampling gas.

Description

Sampling Gas State Monitoring System for Continuous Exhaust Gas Monitoring Equipment Based on Digital Twin The present invention relates to a sampling gas state monitoring system for exhaust gas continuous monitoring equipment, which is installed at one end of an exhaust gas continuous monitoring equipment utilizing a sampling method to monitor the temperature, humidity, flow rate, and pressure status of the sampling gas, thereby enabling monitoring of the status of the pretreatment equipment within the exhaust gas continuous monitoring system, and enabling rapid response to the occurrence of an abnormality in the pretreatment equipment through the monitoring, thereby improving the reliability of the exhaust gas continuous monitoring data. In particular, by providing the exhaust gas continuous monitoring equipment and sampling gas state monitoring information as described above in a digital twin-based visualization, it is possible to rapidly analyze the cause and repair procedure and respond immediately through a virtual environment and real-time data linkage when an abnormality occurs in the monitoring equipment or gas state, thereby improving efficiency and enabling rapid problem solving. Generally, combustion gases emitted from ship engines during operation consist of harmless nitrogen, water vapor, and carbon dioxide, as well as harmful carbon monoxide, hydrocarbons, and nitrogen oxides. The reason these harmful substances are contained in combustion gases is that hydrocarbons, which are the original energy components, are exhausted without being combusted (oxidized) inside the cylinder. Furthermore, while carbon monoxide should ideally be produced when hydrocarbons completely combust inside the cylinder to become carbon dioxide, it is emitted as is due to a lack of oxygen or reduced combustion efficiency, whereas nitrogen oxides are formed when a portion of the nitrogen in the fuel reacts with oxygen at high temperatures caused by combustion. Meanwhile, on ships, funnels are installed at a height higher than the accommodation area to discharge combustion gases harmful to the human body into the atmosphere. Regulations stipulate that exhaust gases generated from ships must undergo a purification process through purification devices before being discharged at a concentration below a certain level. For this reason, there is a need for the development of monitoring devices to monitor the pollution levels of exhaust gases generated from ships. To solve this, Patent Document 1 proposed a continuous exhaust gas monitoring device for ships using a sequential sampling method, characterized by using a method of sequentially sampling exhaust pollution generated from all main and auxiliary engines on a ship to continuously measure with a single device and to check the data at a desired location through onboard communication. However, in the case of Patent Document 1, there is a problem in that there is no means to monitor the condition of the pretreatment equipment among the exhaust gas continuous monitoring systems, so poor maintenance of the pretreatment equipment (e.g., failure to check filter replacement) and changes in temperature, humidity, flow rate, and pressure resulting from this cannot be detected. In other words, there was a problem in that the reliability of continuous exhaust gas monitoring data was reduced due to various errors occurring as a result of failing to detect changes in temperature, humidity, flow rate, and pressure as described above (e.g., blockage of the sampling gas pipeline, abnormality in the operating status of pretreatment equipment (moisture removal, etc.), removal of impurities other than the measured gas, occurrence of condensation, etc.). FIG. 1 is a block diagram showing the overall configuration of a sampling gas state monitoring system of an exhaust gas continuous monitoring equipment according to the present invention. FIG. 2 is a block diagram illustrating a sampling gas state monitoring system of a continuous exhaust gas monitoring device according to the present invention. FIG. 3 is a drawing showing an example of digital twin-based visualization according to the present invention. FIG. 4 is a block diagram embodying a state signal measuring means according to the present invention. FIG. 5 is a block diagram illustrating a state signal storage unit according to the present invention. FIG. 6 is a block diagram embodying a state determination unit according to the present invention. FIG. 7 is a block diagram embodying a judgment module according to the present invention. FIG. 8 is a block diagram illustrating a change value calculation unit according to the present invention. The advantages and features of the embodiments of the present invention, and the methods for achieving them, will become clear by referring to the embodiments described below in detail together with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed