WO2018097543A1

WO2018097543A1 - Flame detection apparatus and flame control method thereby

Info

Publication number: WO2018097543A1
Application number: PCT/KR2017/013049
Authority: WO
Inventors: 김세원; 권민준
Original assignee: 한국생산기술연구원
Priority date: 2016-11-28
Filing date: 2017-11-16
Publication date: 2018-05-31
Also published as: KR101782052B1

Abstract

One embodiment of the present invention provides a flame detection apparatus capable of observing flames at various positions inside and outside a furnace by means of an optical fiber to improve the accuracy of flame observation, and a flame control method thereby. A flame detection apparatus according to an embodiment of the present invention comprises: an optical fiber unit having an optical fiber for receiving and recognizing flame chemiluminescence; an imaging unit for converting a signal of the flame chemiluminescence by the optical fiber unit into a two-dimensional (2D) image; an optical filter unit, provided between the optical fiber unit and the imaging unit, for filtering the flame chemiluminescence to only pass light having a predetermined wavelength band; and a processor unit for performing information processing on the flame image acquired through the optical fiber unit, the image pickup unit, and the optical filter unit.

Description

Flame diagnosis device and flame control method

The present invention relates to a flame diagnosis apparatus and a flame control method thereof, and more particularly, flame diagnosis apparatuses capable of observing flames at various positions inside and outside the furnace by using optical fibers, and thus improving flame detection accuracy and flames thereof. It relates to a control method.

Due to energy depletion and environmental issues, interest in high efficiency low pollution combustion systems has recently increased. Accordingly, a great deal of research and development is being conducted from a more fundamental point of view, such as a burner for a high efficiency low pollution combustion system and a study on an efficient operation method of the burner.

Flame monitoring and flame equivalence ratio measuring apparatus which is generally applied now can be largely divided into an exhaust gas measuring method and a light measuring method. In the case of the exhaust gas measurement method, there is an advantage that the measurement accuracy is high and the measurement through the absolute value is possible, but there is a disadvantage that the movement time and the measurement time of the exhaust gas occur. In the case of the photo-measuring method, there is an advantage in that there is almost no delay time as a method of directly measuring the flame, but there is a disadvantage that the absolute measurement accuracy is low.

In addition, the flame photometering system of the related art has a disadvantage in that the measurement region is limited by measuring the light intensity of the entire flame or by scanning only a linear region according to the measurement probe position.

On the other hand, there is a flame equivalent ratio as a variable representing a general flame state. The flame equivalence ratio refers to the ratio of fuel and air supplied for the flame, and the distribution of the flame equivalence ratio is very important for inferring and defining the state of the flame.

In Republic of Korea Patent No. 10-1340952 (name of the invention: air-fuel ratio control apparatus and control method including a photodiode sensor, hereinafter referred to as the prior art 1), the hollow burner used in the domestic boiler and the lower portion of the burner A component ratio control module composed of a combustion chamber located therein, an observation window positioned at one side of the combustion chamber, an ignition plug located at a position where the burner and the combustion chamber contact each other, and a photodiode disposed outside the observation window of the combustion chamber facing the observation window. A sensor, an air supply fan disposed on the first pipe communicating with the burner, prevents the temperature rise of the photodiode sensor due to the radiant heat of the flame transmitted through the observation window during combustion and is within the operating temperature range of the photodiode sensor. Flame of flame ore generated by the operation of the cooling device and the cooling plug to maintain the temperature The air-fuel ratio control device for the signal is applied through a photo diode and a control unit for controlling the rotational speed of the air supply fan is disclosed.

Prior art document: Korean Patent No. 10-1340952

An object of the present invention for solving the above problems is to provide a device for diagnosing a flame state by monitoring the flame in real time and at the same time grasping the flame structure.

In addition, an object of the present invention is to induce the lowest air-fuel ratio operation by using a flame diagnosis device, thereby enabling high efficiency operation in the entire combustion system.

The technical problem to be achieved by the present invention is not limited to the technical problem mentioned above, and other technical problems not mentioned above may be clearly understood by those skilled in the art from the following description. There will be.

An optical fiber unit including an optical fiber that receives incident flame-emitting light; An imaging unit for two-dimensional (2D) imaging the signal of the flame emission by the optical fiber unit; An optical filter unit disposed between the optical fiber unit and the image pickup unit and configured to pass the light having a predetermined wavelength band by filtering the flame emission of the flame; And a processor unit configured to perform information processing on the flame image acquired through the optical fiber unit, the imaging unit, and the optical filter unit, wherein the processor unit is included in the flame using light filtered by the optical filter unit. The flame equivalence ratio is derived by analyzing the concentration distribution of the radicals, and the flame equivalent ratio distribution measurement is performed by measuring the local concentration difference of the flame radicals by the recognition of the flame emission by the optical fiber unit.

In an embodiment of the present disclosure, the optical fiber unit may include a coupling unit provided in the furnace and coupled to a cradle capable of mounting the optical fiber, and the coupling unit may include a magnet.

In an embodiment of the present disclosure, a plurality of optical fiber units may be provided, and the image pickup unit may selectively image the signal of the flame emission from each optical fiber unit.

In an embodiment of the present disclosure, the imaging unit may be formed of a digital camera.

In an exemplary embodiment of the present disclosure, the processor unit may further include a display device configured to receive and express a radical concentration distribution obtained by data processing on the flame image in a contour form.

In an embodiment of the present disclosure, the optical filter unit may variably adjust a wavelength band of the filtered light.

In an exemplary embodiment of the present invention, a plurality of imaging units may be provided, and a plurality of optical filter units having different wavelength bands may be distributed and disposed one for each of the plurality of imaging units.

The configuration of the present invention for achieving the above object, the optical fiber unit having an optical fiber that receives the incident light of the flame; An imaging unit which images the signal of the flame emission by the optical fiber unit; An optical filter unit disposed between the optical fiber unit and the image pickup unit and configured to pass the light having a predetermined wavelength band by filtering the flame emission of the flame; A processor unit configured to perform information processing on the flame image acquired through the optical fiber unit, the imaging unit, and the optical filter unit; A control unit which outputs a control signal according to the information processed by the processor unit; A fuel controller configured to adjust a fuel amount supplied to a burner by receiving a control signal from the controller; An air adjusting unit which receives a control signal from the control unit and adjusts the amount of air supplied to the burner; And a warning display unit displaying a warning by an abnormal flame detection signal of the processor unit.

In an embodiment of the present invention, the fuel control unit or the air control unit may include an actuator.

In an embodiment of the present disclosure, the control unit may transmit a control signal to the fuel control unit and the air control unit by wire or wirelessly.

The configuration of the present invention for achieving the above object, (i) providing an optical filter unit between the optical fiber unit and the imaging unit; (ii) acquiring a flame image by using the optical fiber unit, the imaging unit, and the optical filter unit; (iii) obtaining flame image information by digitizing a histogram for each pixel of the flame image; (iv) processing the flame image information into a matrix of each pixel; And (v) receiving, by the processor unit, a radical concentration distribution obtained by processing the data on the flame image in a contour form, and expressing the radical concentration distribution in a contour form in a display device.

The configuration of the present invention for achieving the above object, (i) providing an optical filter unit between the optical fiber unit and the imaging unit; (ii) acquiring a flame image by using the optical fiber unit, the imaging unit, and the optical filter unit; (iii) a processor processing data for the flame image; (iv) outputting a control signal from a controller to a fuel controller or an air controller according to data processing of the processor unit of step (iii); (v) controlling the amount of fuel and the amount of air supplied to the burner by the fuel control unit and the air control unit by the control signal; And (vi) displaying a warning on the warning display unit by an abnormal flame detection signal of the processor unit.

The effect of the present invention according to the configuration as described above, unlike the conventional optical measurement system in which the observation window is required, it is possible to observe the equivalence ratio distribution of the flame at various locations outside and inside the furnace to improve the accuracy of flame observation.

In addition, the effect of the present invention, by continuously analyzing the concentration distribution of the various radicals contained in the flame to collect and use the data about it, it is possible to monitor the flame in real time, at the same time flame structure by measuring the flame equivalent ratio distribution Can be measured.

In addition, the effect of the present invention, it is possible to perform the measurement of the flame structure in real time, it is possible to control the automatic operation based on the data for this, it is possible to operate efficiently with the lowest air-fuel ratio, using an optical filter and an imaging device Its simple configuration makes it insensitive to changes in the environment, such as temperature and humidity.

The effects of the present invention are not limited to the above-described effects, but should be understood to include all the effects deduced from the configuration of the invention described in the detailed description or claims of the present invention.

1 is a graph of the peak wavelength of OH, CH and C ₂ radical light included in the flame emission according to an embodiment of the present invention.

2 is a block diagram of a flame diagnosis apparatus according to an embodiment of the present invention.

3 is a block diagram of a flame diagnosis apparatus according to another embodiment of the present invention.

4 is a block diagram of a flame control system using a flame diagnosis apparatus according to an embodiment of the present invention.

5 is an actual image of a flame by flame equivalent ratio according to an embodiment of the present invention.

6 is a contour graph of the distribution of CH radicals by flame equivalent ratio according to an embodiment of the present invention.

7 is a contour graph of the distribution of C ₂ radicals according to flame equivalent ratios according to an embodiment of the present invention.

8 is a graph of CH radical intensity according to flame equivalent ratio by image processing of a processor unit according to an exemplary embodiment of the present invention.

9 is a graph of C ₂ radical intensity according to flame equivalent ratio by image processing of a processor unit according to an exemplary embodiment of the present invention.

The most preferred embodiment of the present invention, the optical fiber unit having an optical fiber to recognize the incident light of the flame; An imaging unit for two-dimensional (2D) imaging the signal of the flame emission by the optical fiber unit; An optical filter unit disposed between the optical fiber unit and the image pickup unit and configured to pass the light having a predetermined wavelength band by filtering the flame emission of the flame; And a processor unit configured to perform information processing on the flame image acquired through the optical fiber unit, the imaging unit, and the optical filter unit, wherein the processor unit is included in the flame using light filtered by the optical filter unit. The flame equivalence ratio is derived by analyzing the concentration distribution of the radicals, and the flame equivalent ratio distribution measurement is performed by measuring the local concentration difference of the flame radicals by the recognition of the flame emission by the optical fiber unit.

Hereinafter, with reference to the accompanying drawings will be described the present invention. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. In the drawings, parts irrelevant to the description are omitted in order to clearly describe the present invention, and like reference numerals designate like parts throughout the specification.

Throughout the specification, when a part is said to be "connected (connected, contacted, coupled)" with another part, it is not only "directly connected" but also "indirectly connected" with another member in between. "Includes the case. In addition, when a part is said to "include" a certain component, this means that it may further include other components, without excluding the other components unless otherwise stated.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. As used herein, the terms "comprise" or "have" are intended to indicate that there is a feature, number, step, action, component, part, or combination thereof described on the specification, and one or more other features. It is to be understood that the present invention does not exclude the possibility of the presence or the addition of numbers, steps, operations, components, components, or a combination thereof.

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

1 is a graph of the peak wavelength of OH, CH and C ₂ radical light included in the flame emission according to an embodiment of the present invention, Figure 2 is a block diagram of a flame diagnostic apparatus according to an embodiment of the present invention.

As shown in Figure 2, the flame diagnosis apparatus of the present invention, the optical fiber unit 10 having an optical fiber for receiving the incident light recognition of the flame; An imaging unit 20 for two-dimensional (2D) imaging a signal of flame emission by the optical fiber unit 10; An optical filter unit 30 disposed between the optical fiber unit 10 and the image pickup unit 20 and configured to filter flame emission and pass only light having a predetermined wavelength band; And a processor unit 40 for performing information processing on the flame image obtained through the optical fiber unit 10, the imaging unit 20, and the optical filter unit 30, and the processor unit 40 includes an optical filter The flame equivalent ratio may be derived by analyzing the concentration distribution of radicals included in the flame using the light filtered by the unit 30.

In addition, the flame equivalent ratio distribution measurement may be performed by measuring the local concentration difference of the flame radicals by the recognition of the flame emission by the optical fiber unit 10. This can be said that the equivalence ratio distribution measurement of the flame is possible.

In the conventional photometering system, the observation window is provided at a fixed position of the side wall of the furnace 60, and the flame is observed only through the observation window. However, in the flame diagnosis apparatus of the present invention, a plurality of furnaces are provided in the furnace 60. The lens unit 61 may be provided, and the optical fiber unit 10 may be connected to each lens unit 61 to observe the flame at a plurality of positions.

In addition, through the lens unit 61 provided on the side wall of the furnace 60, a protective device and a lens are provided in the furnace 60 to protect the optical fiber from the flame, thereby preventing the flame from inside the furnace 60. You can also observe.

While the conventional flame monitoring system requires a considerable size of observation window, the flame diagnosis apparatus of the present invention can measure the difference in flame concentrations of the local portions of the flame at various positions by applying optical fibers, and thus various approaches to the flames. This enables accurate flame concentration measurement for each part of the flame, thereby improving the analysis performance of the flame state.

The optical fiber unit 10 may include a coupling unit 12 provided in the furnace 60 and coupled to a cradle 63 capable of mounting the optical fiber, and the coupling unit 12 may include a magnet.

When the coupling portion 12 of the optical fiber unit 10 is coupled to the holder 63, the optical fiber unit 10 may recognize flame emission of light incident through the lens unit 61.

The cradle 63 and the coupling portion 12 may be coupled by a screw coupling method, but in order to quickly change the position of flame observation, the coupling portion 12 is provided with a magnet to facilitate coupling and decoupling and is coupled by the attraction force of the magnet. The unit 12 and the metal holder 63 may be combined.

As shown in FIG. 1, the flame luminescence may include OH lidalkal, CH radicals or C ₂ radicals. Peaks may appear in a wavelength band for a specific chemical species in the ultraviolet region and the visible region of the flame emission spectrum. OH-ridical, CH radical or C ₂ radicals are the main species of the combustion reaction and have a high intensity of peaks in the ultraviolet region and the visible region. The magnitude of the peak for each species of flame luminescence can be expressed by the concentration of each species radical and thus diagnose the flame state. The present invention can be aimed at measuring the flame equivalent ratio distribution which induces the relationship between the self-luminescence intensity and the flame equivalent ratio of a specific chemical species radical by using the change in the concentration of the radical according to the change in the flame equivalent ratio.

As shown in FIG. 3, the optical fiber unit 10 is provided in plural, and the imaging unit 20 may selectively image the signal of flame emission from each of the optical fiber units 10.

The single optical fiber unit 10 may be selectively coupled with one cradle 63 among the plurality of cradles 63, thereby performing observation of the flame at a plurality of positions.

However, there may be a situation where the movement of the optical fiber unit 10 is not easy due to the environmental characteristics of the flame observation, in which case the plurality of optical fiber units 10 are coupled to the plurality of cradles 63 to simultaneously flame at multiple positions. Observations can be made.

At this time, it is possible to perform a complex analysis on the flames simultaneously observed in multiple directions. Alternatively, only the flame emitter signal of the optical fiber unit 10 selected from the plurality of optical fiber units 10 is transferred from the optical signal controller 11 to the image pickup unit 20, so that the transmitted signal of flame light emission is transferred to the image pickup unit ( 20) can be imaged.

A plurality of imaging units 20 coupled to each of the plurality of optical fiber units 10 may be provided to collect and image a flame light emitting signal simultaneously with respect to flames simultaneously observed in multiple directions.

The imaging unit 20 may be formed of a digital camera.

As the imaging unit 20, a digital camera generally used may be used, and a system may be configured at a low cost, and the maintenance and repair may be easy due to a simple configuration. In addition, the imaging unit 20 may continuously transmit the image of the flame to the processor unit 40 through real-time imaging.

In addition, the image pickup unit 20 may be an image pickup device, and may measure two-dimensional (2D) measurement to measure a local concentration difference of a flame even if the measurement device does not move separately.

The processor 40 may further include a display device 80 that receives and expresses a radical concentration distribution obtained by processing data on a flame image in a contour form.

The signal of flame light emission recognized by the optical fiber unit 10 is filtered by the optical filter unit 30, and the flame image formed by light of a specific wavelength with respect to specific radicals filtered by the optical filter unit 30 is displayed in real time. The image is captured by the imaging unit 20 and transmitted to the processor unit 40, and the processor unit 40 processes data about the flame image and expresses the data on the display device 80 in a contour manner. Real-time monitoring of status and structure may be possible. The comparison between the actual image of the flame and the distribution image of a specific radical and its analysis will be described later.

A wide-angle lens may be further installed between the flame and the optical fiber unit 10 for monitoring and structural measurement of the flame in a wider area.

A wide-angle lens may be fixedly installed at the lens unit 61 provided in the furnace 60 or may be installed at the coupling part 12 of the optical fiber part 10.

The optical filter unit 30 may have a function of variably adjusting a wavelength band of light to be filtered.

Accordingly, when monitoring and measuring by different kinds of radicals, without changing the optical filter unit 30, by changing the wavelength band of the filtered light to a control signal, the concentration distribution of radicals in accordance with the changed wavelength band Collect data for

A plurality of imaging units 20 may be provided, and a plurality of optical filter units 30 having different wavelength bands may be distributed and installed one for each of the plurality of imaging units 20.

When a plurality of imaging units 20 are provided, and each of the optical filter units 30 having a separate wavelength band is provided, information on a plurality of chemical species radicals can be obtained in a single device. Thereby, the precision of monitoring about a flame state and measuring about a flame structure can be improved.

Accordingly, complex monitoring and measurement can be performed by the plurality of optical fiber units 10 and the plurality of imaging units 20.

Hereinafter, a flame diagnosis method will be described.

In the first step, the optical filter unit 30 may be provided between the optical fiber unit and the imaging unit 20.

In the second step, a flame image may be obtained using the optical fiber unit, the imaging unit 20, and the optical filter unit 30.

In a third step, the processor 40 may process the data for the flame image.

The detailed data processing method is described in the data processing method for the flame image obtained by the flame diagnosis apparatus of the next stage.

The processor 40 may receive the radical concentration distribution obtained by processing the data on the flame image in the form of a contour and may be expressed in the display apparatus 80.

Accordingly, it is possible to observe the state and structure of the flame in real time, the structure of the flame can be accurately represented, and it is easy to data the image of the structure of the flame.

In a fifth step, the radical intensity for each flame equivalent ratio may be represented by a graph by the image processing of the processor 40.

Hereinafter, a flame control system using the flame diagnosis device of the present invention will be described.

As shown in FIG. 4, the flame control system using the flame diagnosis apparatus of the present invention includes an optical fiber unit 10 having an optical fiber that receives and recognizes flame emission; An imaging unit 20 for imaging a signal of flame emission by the optical fiber unit 10; An optical filter unit 30 disposed between the optical fiber unit 10 and the image pickup unit 20 and configured to filter flame emission and pass only light having a predetermined wavelength band; A processor unit 40 for performing information processing on the flame image obtained through the optical fiber unit 10, the image pickup unit 20, and the optical filter unit 30; A controller 70 which outputs a control signal based on the information processed by the processor 40; A fuel controller 100 which receives a control signal from the controller 70 and adjusts the amount of fuel supplied to the burner 62; An air control unit 110 which receives a control signal from the control unit 70 and adjusts the amount of air supplied to the burner 62; And a warning display unit 90 displaying a warning by an abnormal flame detection signal of the processor unit 40.

The fuel control unit 100 or the air control unit 110 may include an actuator.

The control unit 70 may transmit a control signal to the fuel control unit 100 and the air control unit 110 by wire or wirelessly.

When the fuel control unit 100 and the air control unit 110 is formed of an actuator, and the control unit 70 wirelessly controls the fuel control unit 100 and the air control unit 110, the remote control using the Internet system Monitoring and measurement of flames may be possible.

The processor unit 40 compares the flame equivalent ratio value induced by the concentration distribution of specific radicals by the digitized data with the flame equivalent ratio distribution range set by the user (hereinafter referred to as reference data). When the flame equivalent ratio in real time deviates from the reference data, an error signal may be transmitted to the controller 70 for the corresponding error. The control unit 70 may transmit a control signal to the fuel control unit 100 and the air control unit 110 so that an error does not occur with respect to the reference data. In addition, the controller 70 may receive information from the fuel flow meter 101 or the air flow meter 111 to provide feedback about whether the flow rate is adjusted according to the control signal. Accordingly, the control of the fuel control unit 100 and the air control unit 110 can be performed in real time and continuously.

The processor unit 40 may be connected to the gas analyzer 50 to process information about gas analysis and transmit data to the controller 70.

The warning display unit 90 may use a rotating warning light or an LED warning light to visually recognize the warning. In addition, the warning display unit 90 may use a siren or a digital alarm device, so as to acoustically recognize the warning.

In the embodiment of the present invention, the visual display device or the audio recognition device is described as the warning display unit 90, but is not necessarily limited thereto.

The processor unit 40 compares the flame equivalent ratio value induced by the concentration distribution of specific radicals by the digitized data with the flame equivalent ratio distribution range set by the user (hereinafter referred to as reference data). Thus, when the flame equivalent ratio value outside the reference data in real time, an error signal may be transmitted to the warning display unit 90 for the corresponding error. The warning display unit 90 may perform a warning display by an error signal.

Hereinafter, a data processing method for a flame image obtained by the flame diagnosis apparatus of the present invention will be described.

In the first step, the optical filter unit 30 may be installed between the optical fiber unit 10 and the imaging unit 20.

In the second step, a flame image may be obtained using the optical fiber unit 10, the imaging unit 20, and the optical filter unit 30.

Between the first and second steps, the step of converting the flame image to grayscale may be further included.

By converting the flame image to grayscale, the brightness ratio between each pixel can be improved, making it easy to digitize the histogram for each pixel.

In a third step, the flame image information may be obtained by digitizing a histogram for each pixel of the flame image.

In a fourth step, the flame image information can be processed into a matrix of each pixel.

The flame image information can be digitized by processing the matrix of each pixel, and the average of numerical values of each pixel can be calculated and graphed separately for each equivalence ratio. In this case, the average value of the numerical value of each pixel may correspond to the intensity value of the corresponding radical.

In a fifth step, the processor 40 may receive the distribution of the radical concentration obtained by processing the data on the flame image in the form of a contour, and may express it in the form of the contour in the display device 80.

By the data processing method for the flame image obtained by the flame diagnosis device, it is possible to measure the intensity of the corresponding radical by the average value of the specific radical concentration distribution, the intensity of this specific radical may appear differentially by flame equivalent ratio have. The intensity and the flame equivalent ratio of a specific radical are represented by a graph having a value correlated with each other. Accordingly, the intensity of the specific radical can be measured to derive the flame equivalent ratio value in real time.

Hereinafter, a flame control method by the flame diagnosis apparatus of the present invention will be described.

In a third step, the processor 40 may process data for the flame image.

The detailed data processing method is described in the data processing method for the flame image obtained by the flame diagnosis apparatus.

In a fourth step, according to the data processing of the processor unit 40 of the third step, the control unit 70 may output a control signal to the fuel control unit 100 or the air control unit 110.

In a fifth step, the fuel control unit 100 and the air control unit 110 may adjust the amount of fuel and the air amount supplied to the burner 62 by the control signal.

In a sixth step, the warning display unit 90 may display a warning by an abnormal flame detection signal of the processor unit 40.

5 is an actual image of the flame by the flame equivalent ratio according to an embodiment of the present invention, Figure 6 is a cantour (contour) graph of the distribution of CH radicals by flame equivalent ratio according to an embodiment of the present invention, Figure 7 Cantour (contour) graph of the distribution of C ₂ radicals by flame equivalent ratio according to an embodiment of the present invention.

In the case of FIG. 6, an optical filter unit 30 having a center wavelength of 432 nm was applied to CH radicals, and in FIG. 7, an optical filter unit 30 having a center wavelength of 511 nm was applied to C ₂ radicals. .

CH radicals and C ₂ radicals have a wavelength band in the visible light range and can be measured using all commonly used digital cameras. In addition, similar results may be obtained for OH radicals (308 nm) through a digital camera to which no UV filter is applied.

As shown in Figs. 5, 6, and 7, a contour map of the distribution of CH radicals or a contour graph of the distribution of C ₂ radicals represents the actual flame image. I could confirm it. In addition, it was confirmed that precise measurement is possible even for the flame structure, which is not easy to measure because the boundary is unclear in the actual flame image.

In addition, as shown in Figure 6 and 7, the flame diagnostic apparatus of the present invention, it is possible to detect the change in the local concentration difference according to the change in the flame state (equivalent ratio), in particular, as shown in Figure 6, It was easy to see the change in the local high concentration radical region formed in the wake of the flame as it increased.

8 is a graph of the CH radical intensity according to the flame equivalent ratio by the image processing of the processor unit 40 according to an embodiment of the present invention, and FIG. 9 is a graph of the image processing of the processor unit 40 according to the embodiment of the present invention. It is a graph of C ₂ radical intensity by flame equivalent ratio.

8 and 9, the image information of the flame according to the flame equivalent ratio set to the variable value is quantified through the data processing method for the flame image obtained by the flame diagnosis apparatus, and the resulting radical The relationship between intensity and flame equivalent ratio is expressed.

As shown in Figures 8 and 9, since each radical intensity value has a specific value for each flame equivalent ratio, it is confirmed that the flame equivalent ratio value can be derived from the radical intensity value measured using the flame diagnostic apparatus of the present invention. It was.

The foregoing description of the present invention is intended for illustration, and it will be understood by those skilled in the art that the present invention may be easily modified in other specific forms without changing the technical spirit or essential features of the present invention. will be. Therefore, it should be understood that the embodiments described above are exemplary in all respects and not restrictive. For example, each component described as a single type may be implemented in a distributed manner, and similarly, components described as distributed may be implemented in a combined form.

The scope of the present invention is represented by the following claims, and it should be construed that all changes or modifications derived from the meaning and scope of the claims and their equivalents are included in the scope of the present invention.

10: optical fiber part

11: optical signal controller

12: coupling part

20: imaging unit

30: optical filter unit

40: processor unit

50: gas analyzer

60: no

61: lens unit

62: burner

63: holder

70: control unit

80: display device

90: warning display

100: fuel control unit

101: fuel flow meter

110: air conditioner

111: air flow meter

Claims

An optical fiber unit including an optical fiber that receives incident flame-emitting light;

An imaging unit for two-dimensional (2D) imaging the signal of the flame emission by the optical fiber unit;

An optical filter unit disposed between the optical fiber unit and the image pickup unit and configured to pass the light having a predetermined wavelength band by filtering the flame emission; And

And a processor unit configured to perform information processing on the flame image obtained through the optical fiber unit, the imaging unit, and the optical filter unit.

The processor unit derives a flame equivalent ratio by analyzing a concentration distribution of radicals included in the flame by using the light filtered by the optical filter unit,

Flame diagnosis apparatus characterized in that the flame equivalent ratio distribution measurement is performed by measuring the local concentration difference of the flame radicals by the recognition of the flame emission by the optical fiber unit.
The method according to claim 1,

The optical fiber unit is provided in the furnace and includes a coupling portion coupled to the cradle to mount the optical fiber, the coupling portion is characterized in that the flame diagnosis device.
The method according to claim 1,

The optical fiber unit is provided with a plurality, the image pickup unit is a flame diagnostic apparatus, characterized in that for selectively imaging the signal of the flame emission from each optical fiber unit.
The method according to claim 1,

And the imaging unit is formed of a digital camera.
The method according to claim 1,

And a display device for receiving and expressing, in the form of a contour, a radical concentration distribution obtained by the processor unit in the data processing for the flame image.
The method according to claim 1,

The optical filter unit, the flame diagnostic apparatus, characterized in that for adjusting the wavelength band of the filtered light variably.
The method according to claim 1,

And a plurality of the imaging units, and a plurality of the optical filter units having different wavelength bands are distributed one by one for each of the plurality of imaging units.
In the flame control system using the flame diagnosis device of claim 1,

An optical fiber unit including an optical fiber that receives incident flame-emitting light;

An imaging unit which images the signal of the flame emission by the optical fiber unit;

An optical filter unit disposed between the optical fiber unit and the image pickup unit and configured to pass the light having a predetermined wavelength band by filtering the flame emission of the flame;

A processor unit configured to perform information processing on the flame image acquired through the optical fiber unit, the imaging unit, and the optical filter unit;

A control unit which outputs a control signal according to the information processed by the processor unit;

A fuel controller configured to adjust a fuel amount supplied to a burner by receiving a control signal from the controller;

An air adjusting unit which receives a control signal from the control unit and adjusts the amount of air supplied to the burner; And

And a warning display unit displaying a warning by an abnormal flame detection signal of the processor unit.
The method according to claim 8,

The fuel control unit or the air control unit, the flame control system using a flame diagnostic apparatus, characterized in that it comprises an actuator.
The method according to claim 8,

The control unit, the flame control system using a flame diagnostic apparatus, characterized in that for transmitting the control signal to the fuel control unit and the air control unit by wire or wireless.
In the data processing method for the flame image obtained by the flame diagnosis apparatus of claim 1,

(i) providing an optical filter unit between the optical fiber unit and the imaging unit;

(ii) acquiring a flame image by using the optical fiber unit, the imaging unit, and the optical filter unit;

(iii) obtaining flame image information by digitizing a histogram for each pixel of the flame image;

(iv) processing the flame image information into a matrix of each pixel; And

and (v) receiving, by the processor unit, the radical concentration distribution obtained by processing the data on the flame image in the form of a contour and expressing it in the form of a contour on the display device. Data processing method for flame images acquired by the diagnostic device.
In the flame control method by the flame diagnosis device of claim 1,

(i) providing an optical filter unit between the optical fiber unit and the imaging unit;

(ii) acquiring a flame image by using the optical fiber unit, the imaging unit, and the optical filter unit;

(iii) a processor processing data for the flame image;

(iv) outputting a control signal from a controller to a fuel controller or an air controller according to data processing of the processor unit of step (iii);

(v) controlling the amount of fuel and the amount of air supplied to the burner by the fuel control unit and the air control unit by the control signal; And

(vi) displaying a warning in the warning display unit by an abnormal flame detection signal of the processor unit; and controlling the flame by the flame diagnosis apparatus.