KR102517190B1 - Apparatus and method for monitoring combustion of enclosed coal shed - Google Patents

Abstract

The present invention relates to an ignition monitoring device and ignition monitoring method of an indoor coal storage facility installed in an indoor coal storage facility to monitor ignition, and to a photographing unit for photographing a real image and a thermal image in an indoor coal storage facility, and transmitting a real image and a thermal image. A communication unit for processing, a storage unit for storing a real image and a thermal image, an operation processing unit for calculating to predict ignition based on the thermal image, an image processing unit for mapping and synthesizing thermal image data to a coal storage image, and a mapped It is characterized in that it includes a display unit that displays the entire coal storage site on one screen using an image. Therefore, the present invention provides a photographing unit, a communication unit, a storage unit, an arithmetic processing unit, an image processing unit, and a display unit to monitor ignition by capturing and mapping real images and thermal images, thereby providing loads in a coal-fired power plant that constructs and operates an indoor coal storage facility. Provides the effect of predicting and monitoring the spontaneous ignition of

Description

Ignition monitoring device and ignition monitoring method of indoor coal storage {APPARATUS AND METHOD FOR MONITORING COMBUSTION OF ENCLOSED COAL SHED}

The present invention relates to an ignition monitoring device and ignition monitoring method of an indoor coal storage facility, and more particularly, to an ignition monitoring device and ignition monitoring method of an indoor coal storage facility installed in an indoor coal storage facility to monitor and predict spontaneous ignition and the possibility of spontaneous ignition. .

In industrial facilities such as steel mills and thermal power plants, industrial boilers are employed to generate a large amount of heat for a long time. Various types of boilers are used as these industrial boilers.

Industrial boilers can be classified into coal, oil, natural gas, and electric boilers by fuel type. Among them, coal boilers are widely used because of their low fuel cost.

When a coal boiler is employed, a large amount of coal is usually stored in order to continuously supply coal to the boiler. Therefore, in the case of these facilities, an open storage yard or a separate low coal warehouse is provided, and a large amount of coal is stored there for a long time.

Recently, as part of a fine dust reduction measure, power generation companies are promoting a project to indoor the outdoor coal storage of coal-fired power plants. Coal storage is vulnerable to spontaneous combustion because bituminous coal, etc. is stored for a long time and exposed to the air, and when spontaneously ignited, smoke and harmful gases cause air pollution. In addition, it is reported that 1 to 5% of the total low coal is lost according to the literature due to spontaneous combustion of coal.

When the loaded coal repeats the moisture absorption and drying process, the flow of air inside the coal increases, resulting in spontaneous ignition due to oxidation. When the loaded coal spontaneously ignites, a large amount of carbon monoxide and fine dust are generated along with the loss of the coal, and in severe cases, a large-scale fire occurs, resulting in enormous property loss.

Therefore, in order to prevent this, recently, a coalfield ignition monitoring system using a drone (Registration No. 10-1880099) has been developed and used. Coal yard ignition monitoring system using a drone includes a thermal imaging camera that captures images, a thermal imaging camera that detects the heat present in the shooting point, a gimbal that controls the shooting angle of the thermal imaging camera and the thermal imaging camera, and communication equipment that has a communication function. It is characterized in that it is configured to include a ground control device that controls the drone, video camera, drone, thermal imaging camera, and gimbal provided in a wireless communication method, and displays the captured image and the detected heat on the screen.

However, the surveillance system using drones can only be used in outdoor coal storage sites where GPS reception is possible, and it is a technology that cannot be used in indoor coal storage sites. Therefore, the need for a technology and method for predicting and monitoring spontaneous combustion in an indoor coal storage facility, where GPS reception is impossible when an indoor coal storage facility is built and operated, has emerged.

In particular, the spontaneous ignition monitoring system currently used in thermal power plants does not monitor the entire coal storage site on one screen, as shown in FIGS. There was also a problem that it was impossible to confirm the location of spontaneous ignition and only a rough location could be confirmed, so on-site confirmation was necessary.

Republic of Korea Patent No. 10-1413290 (June 30, 2014) Republic of Korea Patent Registration No. 10-1880099 (July 19, 2018) Republic of Korea Patent Registration No. 10-1916374 (November 07, 2018)

The present invention has been devised to solve the above conventional problems, by providing a photographing unit, a communication unit, a storage unit, an arithmetic processing unit, an image processing unit, and a display unit to monitor ignition by capturing and mapping real images and thermal images, Its purpose is to provide an ignition monitoring device and ignition monitoring method for an indoor coal storage facility capable of predicting and monitoring the spontaneous ignition of loads in a coal-fired power plant that constructs and operates an indoor storage facility.

In addition, the present invention further includes a warning unit that provides an alarm to the site and the control room when the temperature is higher than a predetermined temperature by checking spontaneous ignition and on-site in conjunction with the display unit, thereby remotely identifying spontaneous ignition and hotspots of loads loaded in an indoor coal mine. Another object is to provide an ignition monitoring device and ignition monitoring method for an indoor coal mine that can improve the management efficiency of loads in an indoor coal mine and reduce management costs while providing an alarm or warning.

In addition, the present invention is provided with a recirculation transport unit that suppresses ignition by transporting the loads of the coal storage to another zone, so that the loads above a predetermined temperature are transported to another zone, lowered to room temperature, and stored again to prevent spontaneous ignition. Another object is to provide an ignition monitoring device and ignition monitoring method of an indoor coal mine that can improve fire extinguishing performance by delaying ignition of.

In addition, the present invention is a fire control system to control ignition by spraying fire extinguishing water, a fire suppressant, and a fire extinguishing liquid at a predetermined temperature in advance by providing a fire extinguishing unit for controlling ignition by spraying fire extinguishing water, a fire suppressant, and a fire extinguishing liquid on a load of a coal storage. Another object is to provide an ignition monitoring device and ignition monitoring method of an indoor coal yard that can quickly respond to ignition while implementing various fire extinguishing performance in conjunction with.

In addition, the present invention maps and synthesizes thermal image data of a photographing unit to an image of a coal mine or maps and synthesizes thermal image data to a real image of a coal mine in an image processing unit, thereby improving the accuracy of synthesizing a real image and a thermal image to rapidly locate an ignition position. Another object is to provide an ignition monitoring device and ignition monitoring method of an indoor coal yard that can identify and improve ignition monitoring performance and monitoring performance.

In addition, the present invention uses a dual-type optical camera, a thermal imaging camera, and a thermal imaging image mapping synthesis technology to monitor the temperature of the entire stockpile on one screen, so that the driver can easily ignite spontaneously. Another object is to provide an ignition monitoring device and ignition monitoring method of an indoor coal mine that can confirm the location and enable immediate response.

The present invention for achieving the above object is an ignition monitoring device for an indoor coal mine installed in an indoor coal mine to monitor ignition, wherein a plurality of cameras are installed at a predetermined interval and at a predetermined height in the indoor coal mine, so that a real image and a thermal image are obtained. A photographing unit 10 for photographing; a communication unit 20 that transmits a real image and a thermal image captured by the photographing unit 10; a storage unit 30 for storing the real image and the thermal image transmitted from the communication unit 20; an arithmetic processing unit 40 that performs calculations to predict ignition based on the thermal image stored in the storage unit 30; an image processing unit 50 that maps and synthesizes the thermal image data collected by the photographing unit 10 to a stockpile image; and a display unit 60 displaying the entire stockpile on a single screen using the image mapped by the image processing unit 50.

In addition, according to the present invention, in conjunction with the display unit 60, when an ignition or a hot spot occurs, it is possible to check the field situation by enlarging a real image at the point, and normally when the temperature is less than 50 ° C in the first step of the preset temperature. A warning unit 70 that provides an alarm to the field and the control room when the temperature rises to 50 to 80 ° C in the second stage, 70 to 100 ° C in the third stage, and 100 ° C in the fourth stage; It is characterized by further including.

The warning unit 70 of the present invention, when the temperature of the load loaded in the yard increases by 20 ° C or more than the average temperature of the surrounding area, intensively monitors by enlarging the real image, and when the temperature rises to 30 ° C or more or two stages It is characterized in that it provides an alarm to the field and control room in case of an emergency.

In addition, the present invention, when the temperature rises to the second level or higher or when a temperature deviation of 30 ° C or more than the average temperature of the surrounding area occurs, the load of the yard is taken out and transported to another zone to lower the temperature to room temperature of 20 to 40 ° C or less. It is characterized in that it further includes; a recirculation transfer unit 80 that suppresses ignition by reducing the carbon again.

In addition, the present invention further comprises a fire extinguishing unit (90) linked to the fire control system to control ignition by spraying fire extinguishing water, a fire suppressant, and a fire extinguishing liquid on the load of the storage yard when the temperature rises by the third or higher level. do.

The image processing unit 50 of the present invention maps and synthesizes the thermal image data collected by the photographing unit 10 to the previously inputted coal storage image of GPS-based coordinates, or scans with a 3D scanner and converts the coal storage into 3D. It is characterized in that the thermal image data collected by the photographing unit 10 is mapped and synthesized on the screen.

As a method for monitoring ignition of an indoor coal storage facility installed in an indoor coal storage facility of the present invention, a plurality of cameras are installed in the indoor coal storage facility at predetermined intervals and at a predetermined height, and a photographing step of taking a real image and a thermal image; a communication step of transmitting the real image and the thermal image captured in the photographing step; a storage step of storing the real image and the thermal image transmitted in the communication step; an arithmetic processing step of performing calculations to predict ignition based on the thermal image stored in the storing step; an image processing step of mapping and synthesizing the thermal image data collected in the photographing step to a coal storage image; and a display step of displaying the entire stockpile on a single screen using the image mapped in the image processing step.

In addition, according to the present invention, in conjunction with the display step, when an ignition or a hot spot occurs, a real image of the point can be enlarged to check the field situation, and normal operation is performed when the temperature is less than 50 ° C in the first step of the preset temperature. And, when the temperature rises to 50 to 80 ° C in the second stage, 70 to 100 ° C in the temperature stage 3, and 100 ° C or more in the temperature stage 4, a warning step for providing an alarm to the field and control room; to be

In addition, the present invention, when the temperature rises to two or more stages or when a temperature deviation of 30 ° C or more than the average temperature of the surrounding area occurs, the load of the yard is taken out and transported to another zone to lower the temperature to room temperature of 20 to 40 ° C or less. It is characterized in that it further comprises; a recycling transfer step of suppressing ignition by reducing the carbon again.

In addition, the present invention is characterized by further comprising a fire extinguishing step linked to a fire control system to control ignition by spraying fire extinguishing water, a fire suppressant, and a fire extinguishing liquid on the load of the open storage yard when the temperature rises by the third level or higher.

In the image processing step of the present invention, the thermal image data collected in the photographing step is mapped to and synthesized into a coal storage image of GPS-based coordinates that have already been input, or scanned with a 3D scanner and captured on a 3D-converted coal storage screen. Characterized in that the thermal image data collected in is mapped and synthesized.

As described above, the present invention provides a photographing unit, a communication unit, a storage unit, an arithmetic processing unit, an image processing unit, and a display unit to monitor ignition by photographing and mapping real images and thermal images, thereby constructing and operating an indoor coal storage facility. Provides the effect of predicting and monitoring the spontaneous ignition of loads in thermal power plants.

In addition, by further providing a warning unit that provides an alarm to the site and the control room when the temperature is higher than a predetermined temperature by checking spontaneous ignition and on-site in conjunction with the display unit, by remotely identifying spontaneous ignition and hot spots of loads loaded in an indoor coal mine, an alarm or warning is provided. At the same time, it provides the effect of improving the management efficiency of loads and reducing management costs in an indoor coal storage facility.

In addition, by providing a recirculation transfer unit that suppresses ignition by carrying out and transporting the contents of the coal storage facility to another zone, the contents of a predetermined temperature or higher are taken out and transported to another zone, lowered to room temperature, and stored again to prevent spontaneous ignition and at the same time prevent ignition of the contents. It provides an effect that can improve digestion performance by delaying it.

In addition, by providing a fire extinguishing unit that controls ignition by spraying fire extinguishing water, fire suppressant, and extinguishing liquid on the load of the coal storage, in conjunction with the fire control system to control ignition by spraying fire extinguishing water, fire suppressant, and extinguishing liquid on the load in advance at a predetermined temperature It realizes various fire extinguishing performance and at the same time provides the effect of responding quickly in case of ignition.

In addition, the image processing unit maps and synthesizes thermal image data of the photographing unit to a coalfield image, or maps and synthesizes thermal image data to a real image of a coalfield, thereby improving the synthesis accuracy of the real image and the thermal image to quickly identify the ignition location. It provides the effect of improving the monitoring performance and monitoring performance of ignition.

In addition, by using a dual-type optical camera and thermal imaging camera, and thermal image mapping synthesis technology and real screen of coal storage, the driver can easily check the location of spontaneous ignition by monitoring the temperature of the cargo in the entire stockpile on one screen. It provides an effect that can be done and immediate response is possible.

1 is a photograph showing the shape of a load being stored in an outdoor coal storage.
Figure 2 is a photograph showing the shape of various indoor coal storage.
Figure 3 is a configuration diagram showing the arrangement state of the photographing unit of the ignition monitoring device of the indoor stockyard according to an embodiment of the present invention.
Figure 4 is a state diagram showing the coordinate work for the load of the ignition monitoring device of the indoor coal storage according to an embodiment of the present invention.
5 is a configuration diagram showing a state of merging thermal images of an ignition monitoring device for an indoor coal storage facility according to an embodiment of the present invention.
6 is a configuration diagram showing a mapping state of a thermal image of an ignition monitoring device of an indoor stockyard according to an embodiment of the present invention.
8 and 9 are configuration diagrams showing a mapping state between a 3D screen and a thermal image of an ignition monitoring device of an indoor stockyard according to an embodiment of the present invention.
10 to 12 are configuration diagrams illustrating a conventional thermal imaging camera monitoring system.
13 is a graph showing the temperature rise state of each coal type according to the lapse of the coal storage period of the loaded material.
14 and 15 are configuration diagrams illustrating area calculation according to distance and resolution of a thermal imaging camera of an ignition monitoring device for an indoor coal storage facility according to an embodiment of the present invention.
16 is a state diagram showing an installation state of an optical camera and a thermal imaging camera in a photographing unit of an ignition monitoring device for an indoor coal mine according to an embodiment of the present invention.
17 is a block diagram showing an ignition monitoring device in an indoor stockyard according to an embodiment of the present invention.
18 is a flowchart illustrating a method for monitoring the ignition of an indoor coal storage facility according to an embodiment of the present invention.

Hereinafter, a preferred embodiment of the present invention will be described in more detail with reference to the accompanying drawings.

3 is a configuration diagram showing the arrangement of the photographing unit of the ignition monitoring device of an indoor coal mine according to an embodiment of the present invention, and FIG. 5 is a configuration diagram showing a state of merging thermal images of an ignition monitoring device for an indoor coal storage facility according to an embodiment of the present invention, and FIG. 8 and 9 are configuration diagrams showing the mapping state of thermal images, and FIGS. 8 and 9 are configuration diagrams showing the mapping state of a 3D screen and a thermal image of an ignition monitoring device for an indoor coal mine according to an embodiment of the present invention, and FIGS. 10 to 12 is a configuration diagram showing a conventional thermal imaging camera monitoring system, FIG. 13 is a graph showing the temperature increase state for each type of coal according to the lapse of the coal storage period of the loaded material, and FIGS. 14 and 15 are indoor coal mines according to an embodiment of the present invention. 16 is a configuration diagram showing the resolution of the thermal imaging camera of the ignition monitoring device and area calculation according to the distance, and FIG. 17 is a block diagram showing an ignition monitoring device in an indoor coal storage facility according to an embodiment of the present invention, and FIG.

As shown in FIGS. 2, 3, 16 and 17, the device for monitoring the ignition of an indoor stockyard according to this embodiment includes a photographing unit 10, a communication unit 20, a storage unit 30, and an arithmetic processing unit 40. ), an image processing unit 50, a display unit 60, a warning unit 70, a recycling transfer unit 80, and a fire extinguishing unit 90, installed in an indoor coal mine to monitor and predict spontaneous ignition and the possibility of spontaneous ignition. It is an ignition monitoring device for an indoor coal storage facility.

The photographing unit 10 is a photographing unit in which a plurality of cameras are installed at predetermined intervals and at a predetermined height in an indoor coal mine to photograph real images and thermal images. It consists of a camera 12 and a thermal imaging camera 13.

The support 11 is a support member in which a plurality of pieces are spaced apart at equal intervals in a plurality of rows in an indoor coal mine and installed at a predetermined height, and is installed higher than the height of the piles in the indoor coal mine to fix various cameras so that photography can be performed from the upper part of the piles. and will support

The optical camera 12 is a camera that captures the external state of the load stored in the indoor coal mine in real time, is installed so that the pixel or resolution of the camera is appropriate, and serves to assist the thermal imaging camera 13 in case of abnormal signs or fire. It is used to check the screen and check the course of action in case of anomaly or fire occurrence.

In addition, the optical camera 12 is integrally fixed with the thermal imaging camera 13 on the upper part of the support 11, or it can move automatically up and down, left and right, and can be controlled by a manager and a controller, In normal times, the entire area is monitored and operated, and since it can be contaminated by dust and moisture, it is of course possible that a function is added to enable periodic cleaning through a nozzle with high-pressure air.

The thermal imaging camera 13 is a camera that provides thermal images and temperature data by measuring multifocally from the upper part of the load stored in the indoor coal storage, and is installed so that the pixel or resolution of the camera is appropriate. The upper part is measured and monitored in a multi-focal method, and the thermal image and temperature data are transmitted to the big data control system and stored.

This thermal imaging camera 13 enables the manager to set the management temperature range step by step, and in case of abnormal symptoms or fire, real-time thermal image and temperature data to the operation control room, crane room, related personnel, etc. through wired and wireless communication networks. It is also possible, of course, to transmit and additionally send a danger notification and an image when the danger level is reached.

In addition, the thermal imaging camera 13 is integrally fixed with the optical camera 12 on the upper part of the support 11, or it can move automatically up and down, left and right, and can be controlled by a manager and a controller, , the entire area is monitored and operated, and since it can be contaminated by dust and moisture, it is of course possible that a function is added to enable periodic cleaning through a nozzle with high-pressure air.

Accordingly, the photographing unit 10 includes an optical camera 12 that captures an image at a certain height of the support 11 and a thermal imaging camera 13 that captures the temperature of a certain area, and bituminous coal stored in an indoor coal storage. Real and thermal images are taken and provided to monitor and predict the spontaneous ignition and spontaneous ignition possibility of the load.

The communication unit 20 is a communication means for transmitting a real image and a thermal image captured by the photographing unit 10, and is a communication means for transmitting a wired and wireless network, such as the Internet, an intranet, and an extranet. ), cellular, such as wired or wireless communications, such as any suitable communications network, including, for example, wireless telephone networks, local area networks (LANs), wide area networks (WANs), WiFi networks, ad hoc networks, and combinations thereof. Various types of image data are transmitted using various communication means.

The storage unit 30 is a storage means for storing the real image and the thermal image transmitted from the communication unit 20, and is a storage medium such as a hard disk drive (HDD) or a solid state drive (SSD) for storing image data. Consists of

The arithmetic processing unit 40 is an arithmetic processing unit that performs calculations to predict ignition based on the thermal image stored in the storage unit 30, and performs semiconductor and various control functions such as integrated circuits as shown in FIGS. 14 and 15. It is composed of a processor that performs various arithmetic operations on a plurality of thermal image data quickly and in real time.

The storage unit 30 and the calculation processing unit 40 may include a computing system including one or more central processing units (CPUs), memory, mass storage, an input interface device, and an output interface device. Elements of a computing system may communicate with each other through a bus.

The hardware platform of such a computing device may be a personal computer, a handheld or laptop device, a multiprocessor system, a microprocessor based system, a programmable appliance, and a distributed computing environment including any of the above systems or devices, such as cloud-based computing. It can be applied in various forms including systems.

The image processing unit 50 is an image processing means for mapping and synthesizing thermal image data collected by the photographing unit 10 to a stockpile image, and as shown in FIGS. 4 to 6 and 8 to 9 , the image processing unit 10 ) to process the input thermal image data so that the resolutions of both image data, that is, thermal image data and real image data, may be matched.

Also, the image processing means for this processing is preferably composed of a program, and matching the resolution of the thermal image data and the real image data is to easily synchronize the object in the thermal image with the object in the real image.

Therefore, such an image processing unit 50 maps and synthesizes the thermal image data collected by the photographing unit 10 to a stockpile image of GPS (Global Positioning System)-based coordinates that have already been input, or scans with a 3D scanner and converts them into 3D. The thermal image data collected by the photographing unit 10 is mapped to the screen of the coal storage and synthesized.

The GPS-based location information entered in this way is stored by inputting X, Y coordinates or X, Y, Z coordinates in advance. For example, X coordinate (latitude): 123,456.7, Y coordinate (longitude): 234,567.8 or X coordinate (Latitude): 123,456.7, Y coordinate (longitude): 234,567.8, Z coordinate (altitude): 1.1, which is entered accurately in 10 cm increments.

In other words, input in units of 10 cm may cause difficulties in mapping due to more sophisticated input, and the speed of image processing may be too slow. However, this method is not limited, but it is also possible to input in units of 1 cm according to the performance of the computer to be developed.

The display unit 60 is a display means for displaying the entire stockfield on one screen using the image mapped by the image processing unit 50, and is a flat panel display or monitor such as a liquid crystal display (LCD) or light emitting diode (LED). It is composed of various display means such as an electric display board, etc.

In addition, this display unit 60 is a display for providing various input screens to the manager and, in particular, outputting video screens provided from the photographing unit 10, and includes multiple screens including screens for each photographing unit 10. or provides a video screen from a specific photographing unit 10.

The warning unit 70 interlocks with the display unit 60, and when an ignition or a hot spot occurs, it is possible to check the field situation by enlarging the real image of the point, and at less than 50 ° C in the first step of the preset temperature. It operates normally, and alarms are provided to the site and control room when the temperature rises to 50 to 80°C in the second stage, 70 to 100°C in the third stage, and 100°C in the fourth stage.

This warning unit 70 enlarges the real image to perform intensive monitoring when the temperature of the cargo loaded in the yard rises by 20° C. or higher than the average temperature of the surrounding area, and when the temperature rises to 30° C. or higher or by the second stage or higher, the on-site Of course, it is also possible to provide an alarm to the control room.

In addition, the warning unit 70 generates an alarm sound when ignition occurs or is likely to occur in the loading area of a specific load, and in particular, image information and Of course, it is also possible to store temperature information and the like so that a manager can inquire and check it.

The recirculation transfer unit 80 takes out and transports the loaded materials of the open storage yard to another area when the temperature rises to two or more stages or when a temperature deviation of more than 30 ℃ than the average temperature of the surrounding area occurs, and the temperature is reduced to room temperature of 20 to 40 ℃ or less. It is recirculated and transported to suppress ignition by lowering the carbon again.

The fire extinguishing unit 90 is a fire extinguishing means linked to the fire control system to control ignition by spraying fire extinguishing water, a fire suppressant, and a fire extinguishing liquid on the cargo in the open storage yard when the temperature rises by three stages or more.

The fire extinguishing unit 90 includes a watering means installed in front, rear, left and right directions along the rails from above the inside of the indoor coal storage facility and spraying combustibles from above the load, and a watering means installed from above the inside of the indoor coal storage facility along the rails from side to side along the rails to A spraying means for spraying extinguishing powder from above, and a stirring means for extinguishing by stirring unignited combustibles with an agitator installed rotatably at the center of the inner bottom surface of an indoor coal storage and ignited at the lower part of the load. It is made up of digestive organs.

Referring to the following drawings, the ignition monitoring method of the indoor stockyard according to the present embodiment will be described in detail.

As shown in FIG. 18, the method for monitoring the ignition of an indoor coal mine according to this embodiment includes a photographing step (S10), a communication step (S20), a storage step (S30), a calculation processing step (S40), and an image processing step (S50). ), display step (S60), warning step (S70), recirculation transfer step (S80), and digestion step (S90), installed in the indoor coal yard to monitor and predict spontaneous ignition and spontaneous ignition. ignition monitoring method.

In the photographing step (S10), a plurality of cameras are installed at predetermined intervals and at a predetermined height in an indoor coal storage to photograph real images and thermal images, and an optical camera 12 for photographing images at a predetermined height of the support 11 and a thermal imaging camera 13 that captures the temperature of a certain area, and provides real and thermal images to monitor and predict spontaneous ignition and spontaneous ignition of loads such as bituminous coal stored in an indoor coal storage. .

The communication step (S20) is a step of transmitting the real image and the thermal image captured in the photographing step (S10), using various communication means such as wired communication or wireless communication such as any appropriate communication network. data will be sent.

The storage step (S30) is a step of storing the real image and the thermal image transmitted in the communication step (S20), and various storage devices for storing image data such as a hard disk drive (HDD) or a solid state drive (SSD). The medium is used to store real image and thermal image.

The calculation processing step (S40) is a step of performing calculation to predict ignition based on the thermal image stored in the storage step (S30), and is composed of a semiconductor such as an integrated circuit or a processor that performs various control functions to store a plurality of thermal image data. Various calculations can be processed quickly in real time.

The image processing step (S50) is a step of mapping and synthesizing the thermal image data collected in the photographing step (S10) to the coal storage image, and combining the thermal image data collected in the photographing step (S10) with the previously input GPS-based coordinates of the coal storage field. The image is mapped and synthesized, or the thermal image data collected in the photographing step (S10) is mapped and synthesized on the screen of the stockyard converted into 3D by scanning with a 3D scanner.

The GPS-based location information entered in this way is stored by inputting X, Y coordinates or X, Y, Z coordinates in advance. For example, X coordinate (latitude): 123,456.7, Y coordinate (longitude): 234,567.8 or X coordinate (Latitude): 123,456.7, Y coordinate (longitude): 234,567.8, Z coordinate (altitude): 1.1, which is entered accurately in 10 cm increments.

In other words, input in units of 10 cm may cause difficulties in mapping due to more sophisticated input, and the speed of image processing may be too slow. However, this method is not limited, but it is also possible to input in units of 1 cm according to the performance of the computer to be developed.

The display step (S60) is a step of displaying the entire stockpile on a single screen using the image mapped in the image processing step (S50), and a flat panel display such as a liquid crystal display (LCD) or light emitting diode (LED) Various images and information are displayed using various display means such as a monitor or an electric signboard.

In addition, in this display step (S60), various input screens are provided to the manager, and in particular, multiple screens including the screen captured in the photographing step (S10) are provided to output the video screen provided in the photographing step (S10). Of course, it is also possible to provide a video screen captured in a specific photographing step (S10).

In the warning step (S70), in conjunction with the display unit 60, when an ignition or a hot spot occurs, the real image of the point can be enlarged to confirm the on-site situation. It operates normally, and when the temperature rises to 50~80℃ in the 2nd stage, 70~100℃ in the 3rd stage, and 100℃ in the 4th stage, an alarm is provided to the field and control room to warn.

In the recirculation and transfer step (S80), when the temperature rises to two stages or higher or when a temperature deviation of 30 ° C or more occurs than the average temperature of the surrounding area, the load of the open storage yard is taken out and transported to another zone to raise the temperature to room temperature below 20 to 40 ° C. It is recirculated and transported to suppress ignition by reducing the carbon again.

In the extinguishing step (S90), when the temperature rises by 3 steps or more, extinguishing is performed in connection with the fire control system to control ignition by spraying extinguishing water, a fire suppressant, and a extinguishing fluid on the load in the open storage yard.

In this fire extinguishing step (S90), a watering means installed in front, rear, left and right along the rails from above the inside of the indoor coal yard and spraying on combustibles from above the load, and a watering means installed from above the inside of the indoor coal yard along the rails to the left and right along the rail to A spraying means for spraying extinguishing powder from above, and a stirring means for extinguishing by stirring unignited combustibles with an agitator installed rotatably at the center of the inner bottom surface of an indoor coal storage and ignited at the lower part of the load. Of course, it is also possible to extinguish the spontaneous combustion of the load using a fire extinguishing means.

As described above, according to the present invention, by providing a photographing unit, a communication unit, a storage unit, an arithmetic processing unit, an image processing unit, and a display unit to monitor ignition by photographing and mapping real images and thermal images, coal for constructing and operating an indoor coal storage facility. Provides the effect of predicting and monitoring the spontaneous ignition of loads in thermal power plants.

In addition, by further providing a warning unit that provides an alarm to the site and the control room when the temperature is higher than a predetermined temperature by checking spontaneous ignition and on-site in conjunction with the display unit, by remotely identifying spontaneous ignition and hot spots of loads loaded in an indoor coal mine, an alarm or warning is provided. At the same time, it provides the effect of improving the management efficiency of loads and reducing management costs in an indoor coal storage facility.

In addition, by providing a recirculation transfer unit that suppresses ignition by carrying out and transporting the contents of the coal storage facility to another zone, the contents of a predetermined temperature or higher are taken out and transported to another zone, lowered to room temperature, and stored again to prevent spontaneous ignition and at the same time prevent ignition of the contents. It provides an effect that can improve digestion performance by delaying it.

In addition, by providing a fire extinguishing unit that controls ignition by spraying fire extinguishing water, fire suppressant, and extinguishing liquid on the load of the coal storage, in conjunction with the fire control system to control ignition by spraying fire extinguishing water, fire suppressant, and extinguishing liquid on the load in advance at a predetermined temperature It realizes various fire extinguishing performance and at the same time provides the effect of responding quickly in case of ignition.

In addition, the image processing unit maps and synthesizes thermal image data of the photographing unit to a coalfield image, or maps and synthesizes thermal image data to a real image of a coalfield, thereby improving the synthesis accuracy of the real image and the thermal image to quickly identify the ignition location. It provides the effect of improving the monitoring performance and monitoring performance of ignition.

In addition, by using a dual-type optical camera and thermal imaging camera, and thermal image mapping synthesis technology and real screen of coal storage, the driver can easily check the location of spontaneous ignition by monitoring the temperature of the cargo in the entire stockpile on one screen. It provides an effect that can be done and immediate response is possible.

The present invention described above can be implemented in various other forms without departing from its technical spirit or main characteristics. Therefore, the above embodiments are mere examples in all respects and should not be construed in a limited manner.

10: shooting unit 20: communication unit
30: storage unit 40: calculation processing unit
50: image processing unit 60: display unit
70: warning unit 80: recirculation transfer unit
90: digestion unit

Claims (11)

As an ignition monitoring device for an indoor coal mine installed in an indoor coal mine to monitor ignition,
A photographing unit 10 in which a plurality of cameras are installed at a predetermined interval and at a predetermined height in an indoor coal storage to take real images and thermal images;
a communication unit 20 that transmits a real image and a thermal image captured by the photographing unit 10;
a storage unit 30 for storing the real image and the thermal image transmitted from the communication unit 20;
an arithmetic processing unit 40 that performs calculations to predict ignition based on the thermal image stored in the storage unit 30;
an image processing unit 50 that maps and synthesizes the thermal image data collected by the photographing unit 10 to a stockpile image;
a display unit (60) displaying the entire stockpile on a single screen using the image mapped by the image processing unit (50);
In conjunction with the display unit 60, when an ignition or hot spot occurs, it is possible to check the field situation by enlarging the real image of the point, and it operates normally when the temperature is less than 50 ° C in the first step of the preset temperature. A warning unit 70 that provides an alarm to the field and control room when the temperature rises to 50 to 80 ° C in the second step, 70 to 100 ° C in the third step, and 100 ° C in the fourth step; and
When the temperature rises above the second temperature level or when there is a temperature deviation of 30 ° C or more from the average temperature of the surrounding area, the load of the yard is taken out and transported to another zone, the temperature is lowered to room temperature below 20 ~ 40 ° C, and the coal is stored and ignited. Including; recirculation transfer unit 80 for suppressing,
The photographing unit 10,
A plurality of supports spaced apart at equal intervals in a plurality of columns in an indoor coal storage, but installed at a predetermined height;
An optical camera that photographs the external state of the load stored in the indoor coal storage in real time; and
Including; a thermal imaging camera that provides thermal images and temperature data by measuring multifocally at the top of the load stored in the indoor storage facility;
The optical camera and the thermal imaging camera are integrally fixed together on the upper part of the support, or can be moved automatically up and down, left and right, and can be controlled by a manager and a controller, and are operated by monitoring the entire area of the corresponding area. , Ignition monitoring device for indoor coal storage, characterized in that it is installed so that periodic cleaning is possible through a nozzle with high-pressure air when contaminated by dust and moisture. delete According to claim 1,
The warning unit 70 expands the real image for intensive monitoring when the temperature of the load loaded in the yard rises by 20° C. or higher than the average temperature of the surrounding area, and if the temperature rises to 30° C. or higher or by the second stage or higher, the field and An ignition monitoring device for an indoor coal mine, characterized in that it provides an alarm to the control room. delete According to claim 1,
Further comprising a fire extinguishing unit (90) linked to a fire control system to control ignition by spraying fire extinguishing water, a fire suppressant, and a fire extinguishing liquid on the load of the storage yard when the temperature rises by the third or higher temperature level; surveillance device. According to claim 1,
The image processing unit 50 maps and synthesizes the thermal image data collected by the photographing unit 10 to the coal storage image of the GPS-based coordinates that have already been input, or scans with a 3D scanner to display the 3D-converted coal storage on the screen. An ignition monitoring device for an indoor coal mine, characterized in that the thermal image data collected by the photographing unit 10 is mapped and synthesized. A method for monitoring the ignition of an indoor coal mine using the ignition monitoring device of an indoor coal mine according to claim 1,
A photographing step of photographing a real image and a thermal image by installing a plurality of cameras at a predetermined interval and at a predetermined height in an indoor coal storage;
a communication step of transmitting the real image and the thermal image captured in the photographing step;
a storage step of storing the real image and the thermal image transmitted in the communication step;
an arithmetic processing step of performing calculations to predict ignition based on the thermal image stored in the storing step;
an image processing step of mapping and synthesizing the thermal image data collected in the photographing step to a coal storage image; and
and a display step of displaying the entire stockpile on a single screen using the image mapped in the image processing step. According to claim 7,
In conjunction with the display step, when an ignition or hot spot occurs, the field situation can be confirmed by enlarging the real image at that point, and it operates normally when the temperature is less than 50 ° C of the preset temperature step 1, and the temperature step 2 A warning step for providing an alarm to the site and the control room when the temperature rises to 50 to 80 ° C, 70 to 100 ° C of the third step and 100 ° C or more of the fourth step; Ignition monitoring method. According to claim 8,
When the temperature rises above the 2nd temperature level or when there is a temperature deviation of 30 ° C or more from the average temperature of the surrounding area, the load of the yard is taken out and transported to another zone, the temperature is lowered to room temperature below 20 ~ 40 ° C, and the coal is ignited again. Ignition monitoring method of an indoor coal mine, characterized in that it further comprises; recirculation transfer step of suppressing. According to claim 8,
Further comprising a fire extinguishing step associated with a fire control system to control ignition by spraying fire extinguishing water, a fire suppressant, and a fire extinguishing liquid on the load of an open storage yard when the temperature rises to the third or higher temperature level. According to claim 7,
In the image processing step, the thermal image data collected in the photographing step is mapped and synthesized to a coal storage image of GPS-based coordinates that have already been input, or scanned with a 3D scanner and converted to 3D. A method for monitoring ignition of an indoor coal mine, characterized in that the thermal image data is mapped and synthesized.

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