JP2021188880A - Information processor, information processing method, combustion control device and combustion control method - Google Patents

Abstract

To accurately grasp a combustion state of waste in a waste incinerator and control the waste incinerator on the basis of the grasped combustion state of the waste.SOLUTION: A control section having hardware is provided. The control section acquires thermal image information obtained by measuring a region including waste in a waste incinerator incinerating waste, causes a storage section to store the thermal image information, extracts a combustion region in which a combustion temperature of waste is a predetermined temperature or higher on the basis of the thermal image information read out from the storage section, and derives at least one of the combustion amount of the waste in the combustion region and a position of a combustion point where the waste burns out in the combustion region, on the basis of the extracted combustion region.SELECTED DRAWING: Figure 8

Description

The present invention relates to an information processing device, an information processing method, a combustion control device, and a combustion control method.

Conventionally, various demands have been made in the field of waste treatment in order to realize a low-carbon society and a sound-cycle society. In response to such demands, various techniques have been proposed as means for specifically grasping the combustion state of waste in a grate-type incinerator (hereinafter, grate incinerator). Patent Document 1 discloses a technique for calculating a feature amount of a combustion state from an image inside a grate incinerator and performing combustion control. Patent Document 2 discloses a technique for grasping the amount of waste in an incinerator by using a thermal image camera that transmits a specific wavelength.

Japanese Unexamined Patent Publication No. 2019-074240 Japanese Unexamined Patent Publication No. 2019-132485

However, in the technique disclosed in Patent Document 1 described above, since the image in the furnace accompanied by the bright flame is used as the image in the furnace, the layer in which the waste is accumulated (waste layer) is blocked by the bright flame. There is a problem that it is difficult to accurately grasp the combustion state of waste. In the technique disclosed in Patent Document 2, it is difficult to grasp the combustion state in the incinerator based only on the amount of waste, and information on the position of the flame and the amount of combustion of waste is also acquired. There was a problem that it was not possible to properly grasp the combustion state in the incinerator because of the need. Therefore, in a grate incinerator, there has been a demand for a technique capable of appropriately controlling the combustion of waste and stabilizing the combustion by accurately grasping the combustion state of the waste supplied on the grate.

The present invention has been made in view of the above, and an object thereof is an information processing device, an information processing method, a combustion control device, and an information processing device capable of accurately grasping the combustion state of waste in a waste incinerator. The purpose is to provide a combustion control method.

In order to solve the above-mentioned problems and achieve the object, the information processing apparatus according to one aspect of the present invention includes a control unit having hardware, and the control unit is in a waste incinerator that incinerates waste. The area containing the waste is measured and the obtained thermal image information is acquired and stored in a storage unit, and the combustion temperature of the waste is set to a predetermined temperature based on the thermal image information read from the storage unit. The above combustion region is extracted, and at least one of the combustion amount of the waste in the combustion region and the position of the combustion point where the waste burns out in the combustion region is derived based on the extracted combustion region.

In the information processing apparatus according to one aspect of the present invention, in the above invention, the amount of combustion is a value based on the area of the combustion region, the maximum temperature in the combustion region, or the integrated temperature value in the combustion region.

In the above invention, the information processing apparatus according to one aspect of the present invention has the control unit in the waste incinerator with respect to the image data generated from the thermal image information read from the storage unit. The boundary between the combustion region and the region other than the combustion region is identified, a boundary line defining at least a part of the boundary line is generated, and processed image data including the boundary line is generated.

In the above invention, the information processing apparatus according to one aspect of the present invention is a combustion state learning model in which the control unit acquires the image data from the storage unit as an input parameter and reads the image data from the storage unit. The processed image data in which the boundary line is generated for the image data is output as an output parameter, and the combustion state learning model uses the image data as a learning input parameter for the image data. This is a learning model generated by machine learning using the processed image data on which the boundary line is drawn as an output parameter for training.

In the information processing apparatus according to one aspect of the present invention, in the above invention, the waste incinerator includes a grate for moving the waste, and the boundary line is the waste and the fire in the image data. Generated at the boundary with the lattice.

In the information processing apparatus according to one aspect of the present invention, in the above invention, the control unit derives the combustion amount and the position of the combustion point based on the extracted combustion region.

In the combustion control device according to one aspect of the present invention, at least one of the combustion amount and the position of the combustion point is obtained from the thermal image information obtained by measuring the region containing the waste in the waste incinerator that incinerates the waste. At least one of the combustion point and the combustion amount obtained by the information processing apparatus according to any one of claims 1 to 6 is acquired, and at least one of the acquired combustion point and the combustion amount is obtained. It is stored in a storage unit and includes a combustion control unit that controls the waste incinerator based on at least one of the combustion amount of the waste and the position of the combustion point.

In the above invention, the combustion control device according to one aspect of the present invention comprises a grate for moving the waste and a waste supply means for supplying the waste onto the grate. The combustion control unit is provided with a supply speed for supplying the waste by the waste supply means and a grate of the grate based on at least one of the combustion amount of the waste and the position of the combustion point. Control at least one with speed.

In the above invention, the combustion control device according to one aspect of the present invention is the combustion control unit, which is based on at least one of the combustion amount of the waste and the position of the combustion point. Control at least one with temperature.

In the above invention, the combustion control device according to one aspect of the present invention has the combustion control unit set a predetermined range of the position of the combustion point corresponding to the height of the layer of the waste in the waste incinerator. Read from the storage unit as a reference combustion point region, acquire information on the height of the waste layer and information on the position of the combustion point from the information processing apparatus, and obtain the height of the waste layer and the acquired information. The waste incinerator is controlled based on the deviation between the position of the combustion point and the reference combustion point region.

In the above-mentioned invention, the combustion control device according to one aspect of the present invention is based on a predetermined range of the amount of combustion corresponding to the height of the layer of the waste in the waste incinerator. It is read from the storage unit as a quantity area, information on the height of the waste layer and information on the combustion amount are acquired from the information processing apparatus, and the acquired height of the waste layer and the combustion amount are used. , The waste incinerator is controlled based on the deviation from the reference combustion amount region.

The information processing method according to one aspect of the present invention is an information processing method executed by an information processing apparatus including a control unit having hardware, and the control unit is in a waste incinerator that incinerates waste. The thermal image information obtained by measuring the region containing the waste is acquired and stored in the storage unit, and the combustion temperature of the waste is equal to or higher than a predetermined temperature based on the thermal image information read from the storage unit. The combustion region of the above is extracted, and at least one of the combustion amount of the waste in the combustion region and the position of the combustion point where the waste burns out in the combustion region is derived based on the extracted combustion region.

The combustion control method according to one aspect of the present invention is a combustion control method executed by a combustion control device including a combustion control unit that controls a waste incinerator that incinerates waste, and the combustion control unit is discarded. The information processing method according to claim 12, wherein at least one of the combustion amount and the position of the combustion point is derived from the thermal image information obtained by measuring the region containing the waste in the waste incinerator for incinerating the material. At least one of the combustion point and the combustion amount is acquired, at least one of the acquired combustion point and the combustion amount is stored in the storage unit, and at least one of the combustion amount of the waste and the position of the combustion point. Based on this, the waste incinerator is controlled.

According to the information processing device, the information processing method, the combustion control device, and the combustion control method according to the present invention, the combustion state of the waste can be accurately grasped in the waste incinerator, and the grasped combustion state of the waste can be grasped. It becomes possible to control the waste incinerator based on.

FIG. 1 is an overall configuration diagram schematically showing a waste incinerator to which an information processing apparatus according to an embodiment of the present invention is applied. FIG. 2 is a side view showing the waste in the incinerator according to the embodiment of the present invention, the supply portion of the waste on the grate, and the imaging unit. FIG. 3 is a front view showing a field of view of an image pickup unit in an incinerator according to an embodiment of the present invention. FIG. 4 is a block diagram showing a configuration of a combustion control device and a combustion determination device according to an embodiment of the present invention. FIG. 5 is a diagram showing an example of transmission image data of combustible waste captured by the imaging unit according to the embodiment of the present invention. FIG. 6 is a diagram showing an example of boundary image data in which a boundary line is generated with respect to the transmission image data captured by the imaging unit according to the embodiment of the present invention. FIG. 7 is a diagram showing an example of extracted image data in which a boundary line obtained by extracting a combustion portion is generated with respect to the boundary image data according to the embodiment of the present invention. FIG. 8 is a flowchart for explaining an information processing method according to an embodiment of the present invention. FIG. 9 is a diagram schematically showing aspects of a grate and waste of an incinerator for explaining an information processing method and a combustion control method according to an embodiment of the present invention. FIG. 10 is a graph showing a reference combustion point region between a combustion point and a waste layer height for explaining a combustion control method according to an embodiment of the present invention. FIG. 11 is a graph showing a reference combustion amount region between the combustion amount and the waste layer height for explaining the combustion control method according to the embodiment of the present invention. FIG. 12 is a diagram showing a modified example of the extracted image data in which the boundary line from which the combustion portion is extracted is generated with respect to the boundary image data according to the embodiment of the present invention.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In all the drawings of the following embodiment, the same or corresponding parts are designated by the same reference numerals. Further, the present invention is not limited to one embodiment described below.

First, according to the knowledge of the present inventor, in order to appropriately control a grate (stoker) type incinerator (hereinafter referred to as a grate incinerator), the position of the flame in the furnace, that is, the inside of the incinerator was imaged. It is useful to detect the position in front of the incinerator in the image. By adopting the method of detecting the position of the flame, if the combustion point in front of the bright flame shifts to the falling side of the incineration ash, there is a high possibility that unburned waste will be generated, and conversely, the combustion point is waste. It can be seen that there is a high possibility that the supply of waste is insufficient when the transition to the supply port side of. Therefore, the present inventor has conceived that if the combustion point of the waste is detected, the combustion state of the waste can be grasped.

On the other hand, it was difficult to accurately grasp the position of the combustion point because the bright flame in the image of the inside of the furnace was constantly fluctuating due to the influence of the blowing air of the combustion air. Therefore, the present inventor has made a diligent study and accurately grasps the combustion point by using the image pickup data (hereinafter referred to as transmission image data) captured in a state where the flame is transmitted through a thermal image camera or the like that transmits a specific wavelength. I figured out a method. Furthermore, the present inventor can grasp the part hidden behind the bright flame in the prior art by extracting the high temperature part of the combustion of the waste based on not only the combustion point but also the transmitted image data. We came up with a method that contributes to stable combustion by quantifying the amount of combustion that did not occur and controlling the amount of combustion as an index. One embodiment described below has been devised based on the above-mentioned diligent studies of the present inventor.

(Grate incinerator)
FIG. 1 shows a grate-type waste incinerator (hereinafter referred to as a grate incinerator) to which an information processing apparatus according to an embodiment of the present invention is applied. As shown in FIG. 1, the grate incinerator as a waste incinerator includes a furnace 1 for burning waste, a waste inlet 2 for charging waste, and a boiler 9. The boiler 9 as a steam generator includes a heat exchanger 9a and a steam drum 9b installed on the downstream side of the furnace outlet 7 of the furnace 1.

The waste input from the waste input port 2 is conveyed to the grate 4 by the waste supply device 3. The reciprocating motion of the grate 4 causes the waste to be agitated and moved. The waste on the grate 4 is burned while being dried by blowing the combustion air supplied by the combustion air blower 6 into the air box below the grate 4, and exhaust gas and ash are generated. The generated ash falls through the ash drop port 5 and is discharged to the outside of the furnace 1.

The total amount of combustion air supplied from under the grate 4 to the inside of the furnace 1 is adjusted by a combustion air damper 14 provided in the immediate vicinity of the combustion air blower 6 as a push-in blower. The flow rate of the combustion air supplied to each air box is adjusted by the subgrate combustion air dampers 14a, 14b, 14c, 14d provided in the pipes that supply the combustion air to each air box. To. In other words, the sub-grate combustion air dampers 14a to 14d adjust the ratio of the flow rate of the combustion air supplied to each air box. In FIG. 1, the bottom of the grate 4 is divided into four air boxes along the waste transport direction, and the combustion air is supplied through each air box. However, the combustion air under the grate is used. The number of dampers 14a to 14d and the number of air boxes is not necessarily limited to four, and can be appropriately changed according to the scale and purpose of the grate incinerator.

Secondary air is blown into the furnace 1 by the secondary air blower 11 as a secondary blower from the secondary air blowing port 10 provided in the furnace wall 1a. When the secondary air is blown into the furnace 1, the unburned components in the combustion gas are further burned, and the excessive rise in the temperature of the furnace wall is suppressed. The flow rate of the secondary air supplied from the secondary air injection port 10 into the furnace 1 is adjusted by the secondary air damper 15 provided in the immediate vicinity of the secondary air blower 11.

Combustible gas generated in the waste drying process (drying stage) and main combustion process (combustion stage) on the upstream side and the post-combustion process (post-combustion stage) on the downstream side along the waste transport direction in the grate 4. ), The combustion exhaust gas generated in) merges at the gas mixing section provided on the furnace outlet 7 side of the furnace 1. The combustible gas and the combustion exhaust gas merged in the gas mixing section are stirred and mixed again, and then secondary combustion is performed by supplying air for secondary combustion. The boiler 9 is installed on the downstream side along the waste transport direction with respect to the portion where the secondary combustion is performed (hereinafter, the secondary combustion portion). The combustion gas subjected to the secondary combustion is exhausted to the outside from the chimney 8 after the heat energy is recovered by the heat exchanger 9a of the boiler 9.

In the furnace 1, an intermediate ceiling 16 is provided at an upper position along the height direction of the furnace 1. The gas flowing in the furnace 1 is divided into a gas containing a large amount of combustible gas generated in the waste drying process and the main combustion process on the upstream side and a combustion exhaust gas generated in the post-combustion process on the downstream side by the intermediate ceiling 16. , Can be divided and discharged. Specifically, the combustion exhaust gas flows through the flue below the intermediate ceiling 16 (main flue), while the gas containing a large amount of combustible gas flows through the flue above the intermediate ceiling 16 (secondary flue). .. The merging of the combustion exhaust gas and the gas containing a large amount of combustible gas in the gas mixing section further promotes the stirring and mixing of the gas in the gas mixing section. As a result, the combustion in the secondary combustion section becomes more stable, the generation of dioxins in the combustion process can be suppressed, and the generation of unburned waste can be suppressed. The intermediate ceiling 16 may not be provided in the furnace 1.

Thermometers as sensors for measuring the gas temperature in the furnace 1 are provided at a plurality of positions in the furnace 1. Specifically, a combustion chamber gas thermometer 17 is provided at an intermediate position between the grate 4 and the secondary air injection port 10 along the height direction of the furnace 1. A main flue gas thermometer 18 is provided at a position below the furnace outlet 7 along the height direction of the furnace 1. A furnace outlet lower gas thermometer 19 is provided at a lower position of the furnace outlet 7 along the height direction of the furnace 1. A furnace outlet middle gas thermometer 20 is provided at a position in the middle of the furnace outlet 7 along the height direction of the furnace 1. A furnace outlet gas thermometer 21 for measuring the combustion control temperature is provided at a position on the downstream side of the furnace outlet 7 along the height direction of the furnace 1. The measured values of the temperature measured by the combustion chamber gas thermometer 17, the main flue gas thermometer 18, the furnace outlet lower gas thermometer 19, the furnace outlet middle gas thermometer 20, and the furnace outlet gas thermometer 21 are the combustion process. As a measured value, it is transmitted to the combustion control device 30 and stored in the storage unit 32 (see FIG. 4).

The boiler 9 is provided with a boiler outlet oxygen concentration meter 22 for measuring the concentration _{of oxygen (O 2} ) in the exhaust gas on the outlet side. At the inlet of the chimney 8, a gas densitometer 23 for measuring the concentrations of carbon monoxide (CO) and nitrogen oxides (NO _{x) in the exhaust gas is provided.} An exhaust gas flow meter 24 for measuring the amount of exhaust gas is provided in the pipe connecting the outlet of the boiler 9 and the chimney 8. The measured values of the gas concentration and flow rate measured by the boiler outlet oxygen concentration meter 22, the gas concentration meter 23, and the exhaust gas flow meter 24 are transmitted to the combustion control device 30 as combustion process measurement values and stored in the storage unit 32. To. Further, the boiler 9 is provided with a steam flow meter 25 for measuring the amount of steam generated in the boiler 9. The measured value of the steam generation amount of the boiler 9 measured by the steam flow meter 25 is transmitted to the combustion control device 30 as a combustion process measured value and stored in the storage unit 32.

An imaging unit 26 is provided on the downstream side of the furnace 1 in the direction of transporting waste. The image pickup unit 26 includes, for example, a flame transmission camera composed of an infrared camera and an image processing unit for processing captured image data. FIG. 2 is a side view showing an installed state of the imaging unit 26. The image pickup unit 26 may be arranged outside the furnace in the vicinity of the monitoring window provided on the furnace wall 1a, or may have a water-cooled structure and may be arranged inside the furnace 1. As shown in FIG. 2, the waste 50 falls from the waste supply unit 12 onto the grate 4 at the portion of the step wall 13. The waste 50 that has fallen on the grate 4 is moved forward on the image pickup unit 26 side while being agitated by the reciprocating motion accompanying the back-and-forth movement of the grate 4.

The imaging unit 26 can acquire thermographic information of the waste 50 on the grate 4 (hereinafter, waste 52 on the grate) as thermal image information. Here, the wavelength of the infrared rays emitted from the waste 50 is different from the wavelength of the infrared rays emitted from the high temperature gas and the flame in the space. Therefore, in the imaging unit 26, by appropriately selecting the infrared wavelength to be measured, even if a flame exists in the measurement field of view, thermal image information corresponding to the temperature distribution of the layer of the waste 52 on the grate can be obtained. be able to. Further, the measurement range in the furnace length direction by the image pickup unit 26 can be set, and the thermal image information of the layer of the waste 52 on the grate at the position upstream from the combustion region (upstream from the flame) can be obtained. The thermal image information can be treated as video data in a state where the flame is transmitted, that is, as a plurality of image data.

In other words, the image pickup unit 26 includes the waste 50 (hereinafter referred to as pre-supply waste 51) sent out from the waste supply unit 12, the stepped wall 13 having a step on which the waste 50 falls, the waste 52 on the grate, and the waste 52. The upper surface of the grate 4 can be imaged in a state where the flame is transmitted through. It should be noted that a combustion image imaging unit that captures the combustion state of the waste 52 on the grate, that is, the flame itself may be further provided. The image data (hereinafter referred to as transmitted image data) captured by the image pickup unit 26 in a state of being transmitted through the flame captured by the image pickup unit 26 is transmitted to the combustion determination device 40 immediately or at a predetermined time interval. The transmission image data captured by the image pickup unit 26 may be stored in the storage unit 32 of the combustion control device 30 and then transmitted from the combustion control device 30 to the combustion determination device 40.

In the present embodiment, the image pickup unit 26 is installed, for example, at a position substantially facing the waste supply unit 12 and the step wall 13. The installation of the image pickup unit 26 is not limited to the position substantially facing the waste supply unit 12 and the step wall 13. The imaging unit 26 can be installed at various positions as long as the boundary between the waste 52 on the grate and other objects, here the step wall 13 and the grate 4, can be imaged.

FIG. 3 is a front view showing an example of the field of view of the imaging unit 26. As shown in FIG. 3, the imaging unit 26 has, for example, a measurement field of view that extends in the vertical direction and the furnace width direction (horizontal direction) of the furnace 1. In the present embodiment, the field of view of the image pickup unit 26 is the waste supply unit 12, the step wall 13, the grate 4, and the furnace wall 1a. The furnace wall 1a included in the field of view of the image pickup unit 26 regulates the lateral movement, that is, the spread of the waste 50 in the left-right direction. The field of view of the imaging unit 26 may be a field of view capable of imaging the boundary portion between the waste 52 on the grate, the grate 4, and the step wall 13 existing on the grate 4. Further, it is preferable that the image pickup unit 26 can take an image of the waste 50 conveyed to the waste supply unit 12. As a result, the waste 50 falling at the position of the step wall 13 can be imaged.

FIG. 4 is a block diagram showing the configurations of the combustion control device 30 and the combustion determination device 40. The combustion control device 30 and the combustion determination device 40 are, for example, a dedicated line, a public communication network such as the Internet, for example, a LAN (Local Area Network), a WAN (Wide Area Network), and a telephone communication network such as a mobile phone or a public line. , VPN (Virtual Private Network), etc., are connected via a network (not shown) consisting of one or more combinations. Further, the combustion control device 30 and the combustion determination device 40 may be integrally configured, or the combustion control device 30 and the combustion determination device 40 may be installed in the same facility as the grate incinerator or installed in another facility. Is also good. When the grate incinerator, the combustion control device 30, and the combustion determination device 40 are installed in separate facilities, various information and various data are communicated via the above-mentioned network.

As shown in FIG. 4, the combustion control device 30 includes a control unit 31, a storage unit 32, and an operation amount adjusting unit 33. Specifically, the control unit 31 as a combustion control unit and the operation amount adjustment unit 33 are processors such as a CPU (Central Processing Unit), a DSP (Digital Signal Processor), and an FPGA (Field-Programmable Gate Array) having hardware. , And a main storage unit (none of which is shown) such as RAM (Random Access Memory) and ROM (Read Only Memory). The storage unit 32 is composed of a storage medium selected from a volatile memory such as RAM, a non-volatile memory such as ROM, an EPROM (Erasable Programmable ROM), a hard disk drive (HDD, Hard Disk Drive), and a removable medium. .. The removable media is, for example, a USB (Universal Serial Bus) memory or a disc recording medium such as a CD (Compact Disc), a DVD (Digital Versatile Disc), or a BD (Blu-ray (registered trademark) Disc). be. Further, the storage unit 32 may be configured by using a computer-readable recording medium such as a memory card that can be mounted from the outside.

The storage unit 32 can store an operating system (OS), various programs, various tables, various databases, and the like for executing the operation of the combustion control device 30. Here, the various programs also include an information processing program that realizes processing based on a model such as a learning model or a learned model according to the present embodiment. These various programs can also be recorded on a computer-readable recording medium such as a hard disk, flash memory, CD-ROM, DVD-ROM, or flexible disk and widely distributed.

The combustion control device 30 adjusts the waste supply speed of the waste 50 as the operation amount of each operation end based on a predetermined operation amount reference value setting relational expression (hereinafter, operation amount relational expression). The feed rate of the material supply device (also referred to as dust supply speed) and the grate feed speed (also referred to as grate speed) for adjusting the moving speed of the waste 50 are controlled. The combustion control device 30 also controls the stop and operation of the waste supply device feed rate and the grate feed speed. The combustion control device 30 controls the amount of combustion air and the amount of secondary air, if necessary, based on the manipulated variable relational expression. The manipulated variable relational expression is, for example, a relational expression between a waste incinerator set value or a waste substance set value and an manipulated variable reference value (manipulated amount target value), and includes a control parameter as a correction coefficient. The control parameters are adjusted by the control unit 31 so as to match the waste incinerator amount set value and the waste substance set value. The adjusted control parameter is changed by the control unit 31 in response to the changed setting value when at least one of the waste incinerator amount setting value and the waste substance setting value is changed. .. By changing the control parameter, the preset operation amount reference value is corrected.

The control unit 31 calculates the waste substance (lower calorific value of the waste) according to the set value of the waste incinerator amount. The control unit 31 adjusts the manipulated variable reference value by adjusting the control parameters included in the manipulated variable relational expression. The control unit 31 corrects the adjusted operation amount reference value based on a predetermined control algorithm such as PID control or fuzzy operation. The storage unit 32 stores the data referred to by the control unit 31. The storage unit 32 stores a predetermined operation amount relational expression, a control algorithm, a preset incineration amount set value, and a combustion process measurement value acquired as a combustion state amount in the furnace 1.

The operation amount adjusting unit 33 adjusts the operation amount of each operation end so as to follow the operation amount reference value. Specifically, the operation amount adjustment unit 33 includes a combustion air amount adjustment unit 331, an air amount ratio adjustment unit 332, a secondary air amount adjustment unit 333, a waste supply device feed speed adjustment unit 334, and a grate feed speed adjustment unit. It has 335.

The combustion air amount adjusting unit 331 adjusts the operation amount so that the combustion air amount follows the operation amount reference value (hereinafter referred to as the corrected operation amount reference value) corrected by the control unit 31. The air amount ratio adjusting unit 332 controls each of the subgrate combustion air dampers 14a to 14d to adjust the mutual ratio of the flow rates in each air box. The secondary air amount adjusting unit 333 adjusts the operation amount so that the secondary air amount follows the correction operation amount reference value. Here, the amount of combustion air and the amount of secondary air are adjusted by controlling the opening degrees of the combustion air damper 14, the subgrate combustion air dampers 14a to 14d, and the secondary air damper 15. ..

The waste supply device feed rate adjusting unit 334 adjusts the operation amount so that the waste supply device feed rate follows the correction operation amount reference value. The grate feed speed adjusting unit 335 adjusts the operation amount so that the grate feed speed follows the correction operation amount reference value. When the operation amount reference value is not corrected by the control unit 31, the operation amount adjustment unit 33 adjusts each operation amount based on the uncorrected operation amount reference value.

(Combustion judgment device)
The combustion determination device 40 as an information processing device includes a control unit 41, an output unit 42, an input unit 43, and a storage unit 44. The combustion determination device 40 functions as a combustion point position measuring device for measuring the position of the combustion point and a combustion amount measuring device for measuring the combustion amount of the waste 50.

The control unit 41 has the same configuration as the control unit 31 described above functionally and physically, and has a CPU, a processor such as a DSP and an FPGA having hardware, and a main storage unit such as a RAM and a ROM (whichever). (Not shown). The output unit 42 as an output means is configured so that predetermined information can be notified to the outside.

The output unit 42 displays an image of the waste 50 in the furnace 1 on the display monitor, displays characters and figures on the screen of the touch panel display, and outputs sound from the speaker according to the control by the control unit 41. To do. The input unit 43 as an input means uses a user interface such as a keyboard, input buttons, levers, a touch panel for manual input provided superimposed on a display such as a liquid crystal display, or a microphone for voice recognition. It is composed of. By operating the input unit 43, a user or the like can input predetermined information to the control unit 41. The output unit 42 and the input unit 43 may be integrated into an input / output unit, and the input / output unit may be composed of a touch panel display, a speaker microphone, or the like.

The storage unit 44 has the same configuration as the storage unit 32 described above functionally and physically, and is selected from volatile memory such as RAM, non-volatile memory such as ROM, EPROM, HDD, and removable media. It is composed of a storage medium. The removable media is, for example, a USB memory or a disc recording medium such as a CD, DVD, or BD. Further, the storage unit 44 may be configured by using a computer-readable recording medium such as a memory card that can be mounted from the outside.

The storage unit 44 can store an OS, various programs, various tables, various databases, etc. for executing the operation of the combustion determination device 40. Here, the various programs include an information processing program that realizes control using the learning model or the learned model according to the present embodiment. The storage unit 44 may be provided in another server capable of communicating via various networks, or may be provided in the combustion control device 30.

Specifically, the boundary discrimination learning model 44a and the combustion state learning model 44b are stored in the storage unit 44. The boundary discrimination learning model 44a and the combustion state learning model 44b are each updatable models including at least one learning model. If the learning model is not updated, it is stored in the storage unit 44 as a learned model. The boundary discrimination learning model 44a and the combustion state learning model 44b may be constructed by using both learning models as one learning model, for example, a combustion boundary discrimination learning model. Further, instead of the boundary identification learning model 44a and the combustion state learning model 44b, a rule-based information processing program created without learning, which executes predetermined information processing on the input data, is used. Is also good. Further, an automatic judgment processing program that realizes judgment processing using a combustion image learning model, which can execute a predetermined judgment from the data of the combustion image of the bright flame itself captured by the combustion image imaging unit, may be included. .. These various programs can also be recorded on a computer-readable recording medium such as a hard disk, flash memory, CD-ROM, DVD-ROM, or flexible disk and widely distributed.

The control unit 41 loads the program stored in the storage unit 44 into the work area of the main storage unit and executes it, and controls each component or the like through the execution of the program to realize a function that meets a predetermined purpose. can. In the present embodiment, the control unit 41 executes the functions of the boundary generation unit 411, the combustion determination unit 412, and the learning unit 413 by executing the program stored in the storage unit 44. Specifically, for example, the control unit 41 executes the function of the boundary generation unit 411 by reading the boundary identification learning model 44a, which is a program, from the storage unit 44. Further, the control unit 41 executes the function of the combustion determination unit 412 by reading the combustion state learning model 44b, which is a program, from the storage unit 44. The details of the functions of the boundary generation unit 411, the combustion determination unit 412, and the learning unit 413 will be described later.

(Boundary discrimination learning model)
Here, the boundary discrimination learning model 44a stored in the storage unit 44 and its generation method will be described. FIG. 5 is a diagram showing an example of transmission image data of combustible waste imaged by the image pickup unit 26 of the present embodiment. FIG. 6 is a diagram showing an example of boundary image data in which a boundary line is generated with respect to the transmission image data captured by the image pickup unit 26 according to the present embodiment.

As shown in FIG. 5, in the furnace 1, the imaging unit 26 includes the waste supply unit 12, the pre-supply waste 51 before being supplied onto the grate 4, the step wall 13, the grate 4, and the grate 4. The waste 52 on the grate and the furnace wall 1a are imaged in a state of being transmitted through the flame and output as transmitted image data. As shown in FIG. 6, the boundary identification learning model 44a executes a process of generating a boundary line 53 for the boundary between the waste 50 and another object for the transmitted image data captured by the imaging unit 26. .. In the example shown in FIG. 6, a boundary line 531 is drawn at the boundary between the waste 50 and the waste supply unit 12, the step wall 13 and the furnace wall 1a, and the waste 50, the step wall 13, the furnace wall 1a and the fire are drawn. A boundary line 532 is drawn at the boundary with the lattice 4. By drawing the boundary line 53, the boundary image data can be divided into, for example, four regions A1, A2, A3, and A4.

The data used for generating the boundary identification learning model 44a is the transmission image data captured by the imaging unit 26 and the processed image data in which the boundary is identified with respect to the transmission image data and the boundary line 53 described above is drawn. (Hereinafter, boundary image data). The number of transparent image data and boundary image data is preferably 100 or more, for example. That is, the boundary image data used for generation is the waste 50, the waste supply unit 12, the step wall 13, the furnace wall 1a, and the grate 4 for the transmission image data by the operator, respectively. It is the image data in which the boundary line 53 is drawn with respect to the boundary of. As the input / output data set for generating the boundary identification learning model 44a, transparent image data is used as a learning input parameter, and boundary image data is used as a learning output parameter. The learning unit 413 of the control unit 41 generates a boundary discrimination learning model 44a by machine learning such as deep learning using a neural network, using the above-mentioned learning input parameters and learning output parameters as teacher data. do. The control unit 41 generates boundary image data from the transparent image data based on the content learned by the learning unit 413. Further, the learning unit 413 appropriately updates the boundary identification learning model 44a by using the input transparent image data and the boundary image data obtained by the operator correcting or drawing the boundary.

(Combustion state learning model)
Next, the combustion state learning model 44b stored in the storage unit 44 and its generation method will be described. FIG. 7 is a diagram showing an example of extracted image data obtained by extracting a combustion unit from the boundary image data created by the boundary generation unit 411 according to the present embodiment. The image pickup unit 26 transmits the transmission image data shown in FIG. 5 to the control unit 41. The boundary generation unit 411 of the control unit 41 generates the boundary image data shown in FIG. 6 from the input transmission image data based on the combustion state learning model 44b. As shown in FIG. 7, the combustion state learning model 44b is a learning model capable of executing a process of extracting the combustion unit 52A as a combustion region based on image data in the furnace 1 such as transmission image data and boundary image data. Is.

The learning input parameters used for generating the combustion state learning model 44b are at least one of the transmission image data captured by the imaging unit 26 and the boundary image data generated by the boundary generation unit 411 based on the boundary identification learning model 44a. And. Further, the learning output parameters used for generating the combustion state learning model 44b are the boundary between the waste 52 on the grate and other regions and the boundary between the waste 52 and other regions with respect to the transmission image data or the boundary image data by the operator. It is processed image data (hereinafter, extracted image data) in which the boundary between the grate waste 52 having a combustion temperature of a predetermined temperature or higher and another region including the grate waste 52 having a combustion temperature lower than a predetermined temperature is drawn. In the example shown in FIG. 7, a portion where the combustion temperature of the waste 52 on the grate is above a predetermined temperature, for example, 1000 K or more is drawn in white with respect to the boundary image data, and a portion below the predetermined temperature, for example, less than 1000 K is drawn. It is drawn at the dot. In the grate waste 52 shown in FIG. 7, a boundary line 532a is drawn on the outer edge of the portion where the combustion temperature is lower than the predetermined temperature, and the boundary between the combustion portion 52A whose combustion temperature is equal to or higher than the predetermined temperature and another region, that is, A boundary line 532b is drawn on the outer edge of the combustion portion 52A. The image pickup unit 26 equipped with a thermal image camera or the like can output transmission image data based on the temperature distribution of the waste 50. In this case, the output transmitted image data can be output as, for example, image data in which the brightness is increased as the temperature is higher and the brightness is decreased as the temperature is lower. As a result, the waste 52 on the grate can be extracted from the transmitted image data, and in the extracted waste 52 on the grate, a high temperature region having a predetermined temperature or higher can be extracted as the combustion unit 52A. As described above, the image data obtained by extracting the waste 52 on the grate and the combustion unit 52A may be used as the extracted image data for the transmitted image data whose temperature distribution can be grasped by the brightness.

The number of transparent image data, boundary image data, and extracted image data used for learning is preferably 100 or more, for example. As the input / output data set for generating the combustion state learning model 44b, transmission image data or boundary image data is used as a learning input parameter, and extracted image data is used as a learning output parameter. The learning unit 413 of the control unit 41 generates a combustion state learning model 44b by machine learning such as deep learning using a neural network, using the above-mentioned learning input parameters and learning output parameters as teacher data. The control unit 41 generates the extracted image data from the transparent image data or the boundary image data based on the content learned by the learning unit 413. Further, the learning unit 413 appropriately obtains the combustion state learning model 44b by using the input transparent image data or the boundary image data and the extracted image data obtained by the operator correcting or drawing the boundary. Update.

The image data includes the transmission image data captured by the imaging unit 26, the boundary image data in which the boundary line 53 is drawn on the transmission image data, and the transmission image data or the boundary image data, the waste 52 on the grate. And the extracted image data from which the combustion unit 52A is extracted is included. When the transparent image data is used as the image data, the transparent image data captured by the imaging unit 26 is used. When the boundary image data is used as the image data, the boundary image data generated by the boundary identification learning model 44a, the boundary image data generated or modified by the operator, and the like can be used. Similarly, when the extracted image data is used as the image data, the extracted image data generated by the combustion state learning model 44b, the extracted image data generated or modified by the operator, and the like can be used.

At least the following information can be obtained from the image data.
Area of waste 52 on the grate (Area of waste 50 in areas A31 and A32 in FIG. 7)
Height of waste 52 on the grate (local height h of waste layer, average height H of waste layer in FIGS. 6 and 7)
Position of the combustion point of the waste 52 on the grate (end of the combustion unit 52A on the image pickup unit 26 side) (FIG. 6, line F in FIG. 7)
Area of the burner section 52A (in FIG. 7, the area S _F region A32 of the burner section 52A)
Maximum temperature, average temperature, area, and integrated temperature value of the combustion unit 52A (region A32 in FIG. 7).
The integrated temperature value is a value obtained by integrating the temperature of each predetermined region such as a pixel in the combustion unit 52A of the image data.

Further, the above-mentioned combustion state learning model 44b further derives the height H of the layer (waste layer) of the waste 52 on the grate, measures the position of the combustion point, and derives the combustion amount. It may include a learning model that can execute the process. In this case, as the input / output data set for generating the combustion state learning model 44b, transmission image data or boundary image data is used as the learning input parameter, and the extracted image data and waste are used as the learning output parameter. Data on the layer height H, data on the position of the combustion point, and data on the amount of combustion (area of the combustion unit 52A, maximum temperature, integrated temperature value) are used. The number of input / output data sets is preferably 100 or more, for example. The learning unit 413 of the control unit 41 generates a combustion state learning model 44b by machine learning such as deep learning using a neural network, using the above-mentioned learning input parameters and learning output parameters as teacher data. The control unit 41 generates extracted image data from the transmission image data and the boundary image data based on the contents learned by the learning unit 413, and has a waste layer height H, a position of a combustion point F, and a combustion amount V _F. Are derived respectively. A learning model for deriving the height H of the waste layer, the position of the combustion point F, and the combustion amount V _{F may be separately generated from the extracted image data.} The learning unit 413 derives the waste layer height H, the position of the combustion point F, and the combustion amount V _{F measured by the rule-based combustion state derivation program from the extracted image data modified by the operator and the image data.} The combustion state learning model 44b may be updated as appropriate using the values.

(Information processing method and combustion control method)
Next, the information processing method and the combustion control method according to the embodiment of the present invention will be described. FIG. 8 is a flowchart for explaining an information processing method and a combustion control method according to the present embodiment. In the present embodiment, step ST1 is a process performed by the image pickup unit 26 in the furnace 1, steps ST2, ST3, ST6 to ST9 are performed by the combustion determination device 40, steps ST4 and ST5 are performed by the operator, and steps ST10 to ST12 are performed by the combustion control device 30. Is. The combustion determination device 40 may perform steps ST10 and ST11.

As shown in FIG. 8, in step ST1, the image pickup unit 26 takes an image of the inside of the furnace 1. The image pickup unit 26 captures the situation inside the furnace 1 in the field of view as an image transmitted through the flame. Specifically, as shown in FIG. 5, the imaging unit 26 flames the pre-supply waste 51, the step wall 13, the waste on the grate 52, the grate 4, and the furnace wall 1a in the waste supply unit 12. Is imaged as a transparent state. It is not necessary to take an image of the pre-supply waste 51 and the furnace wall 1a. The image pickup unit 26 transmits the captured transmission image data to the control unit 41 through the input unit 43 of the combustion determination device 40. The control unit 41 stores the received transparent image data in the storage unit 44.

Next, in step ST2 shown in FIG. 8, the boundary generation unit 411 of the combustion determination device 40 reads the boundary identification learning model 44a, and with respect to the transmission image data (see FIG. 5) acquired from the image pickup unit 26. The boundary between the waste 50 and the waste supply unit 12, the step wall 13, the furnace wall 1a, and the grate 4 is determined. The boundary generation unit 411 mutually identifies the waste 50, the waste supply unit 12, the step wall 13, the furnace wall 1a, and the grate 4 by a rule-based image identification algorithm, and they are used. You may judge the boundary of.

Further, the combustion determination unit 412 of the control unit 41 reads the combustion state learning model 44b, distinguishes the waste 52 on the grate from other regions, and has a temperature equal to or higher than the predetermined temperature in the identified waste 52 on the grate. The combustion unit 52A (region A32) and the other region A31 having a temperature lower than the predetermined temperature are distinguished from each other, and the boundary between them is determined. The combustion determination unit 412 discriminates between the waste 52 on the grate and other regions by a rule-based image identification algorithm, and the combustion unit 52A (region) above a predetermined temperature in the identified waste 52 on the grate. A32) and other regions A31 below a predetermined temperature may be distinguished to determine their boundaries.

Next, in step ST3, the boundary generation unit 411 determines the boundary between the waste 50 and another object, that is, the waste 50, the waste supply unit 12, the step wall 13, and the furnace with respect to the transmission image data. A boundary line 53 is drawn for each boundary with the wall 1a and the grate 4. As shown in FIG. 6, the boundary generation unit 411 is, for example, on the grate at the boundary between the pre-supply waste 51 and the waste supply unit 12, the furnace wall 1a, and the step wall 13 with respect to the transmitted image data. Boundary lines 531 and 532 are drawn with respect to the boundary between the waste 52 and the step wall 13, the grate 4, and the furnace wall 1a, respectively. In other words, the boundary generation unit 411 draws the boundary line 531 so as to surround the outer edge of the pre-supply waste 51. Further, the boundary generation unit 411 draws a boundary line 532 so as to surround the outer edge of the waste 52 on the grate. As described above, the boundary generation unit 411 generates boundary image data in which the boundary line 53 is drawn with respect to the transparent image data. The boundary generation unit 411 outputs the generated boundary image data to the combustion determination unit 412.

Further, in step ST3, the combustion determination unit 412 has a combustion unit 52A (region A32) having a temperature equal to or higher than a predetermined temperature in the identified waste 52 on the grate and a predetermined temperature with respect to the boundary image data input from the boundary generation unit 411. Boundary lines 532a and 532b are drawn so as to be distinguished from other regions A31 below. In other words, the combustion determination unit 412 draws the boundary line 532b so as to surround the outer edge of the combustion unit 52A (region A32) with respect to the boundary image data, and the region other than the combustion unit 52A in the waste 52 on the grate. A boundary line 532a is drawn so as to surround the outer edge of A31. As described above, the combustion determination unit 412 generates the extracted image data in which the boundary lines 532a and 532b are drawn with respect to the boundary image data. The combustion determination unit 412 may generate the extracted image data in which the boundary lines 532a and 532b are drawn with respect to the transmission image data for which the boundary generation processing by the boundary generation unit 411 has not been performed. In this case, it is not necessary to execute the boundary image data generation process by the boundary generation unit 411. Further, with respect to the boundary image data, the boundary line 532 (532a) that divides the region A32 of the combustion unit 52A and the other region A31 of the waste 52 on the grate in the region A3 where the waste 52 on the grate exists. , 532b) may be generated to generate the extracted image data. That is, the extracted image data may be any image data that can extract the existing region of the waste 52 on the grate and can distinguish the combustion portion 52A and the region lower than the combustion portion 52A in the waste 52 on the grate. .. Further, the combustion determination unit 412 outputs to the boundary generation unit 411 the result of discriminating the combustion unit 52A (region A32) having a temperature higher than the predetermined temperature from the other region A31 having a temperature lower than the predetermined temperature in the boundary image data, and outputs the result to the boundary generation unit 411. 411 may draw the boundary lines 532a and 532b.

Next, in step ST4 shown in FIG. 8, the operator of the combustion determination device 40 confirms the extracted image data output to the output unit 42. The operator determines whether or not the boundary lines 532a and 532b drawn on the confirmed extracted image data are accurate. When the operator determines that the boundary lines 532a and 532b are not accurate (step ST4: No), the learning unit 413 sets a flag requiring learning and proceeds to step ST5. On the other hand, when the operator determines in step ST4 that the boundary line 53 is accurate (step ST4: Yes), the process proceeds to step ST7. The process of step ST7 will be described later.

In step ST5, the operator uses the input unit 43 to correct the boundary lines 532a and 532b drawn on the extracted image data generated by the combustion determination unit 412. As a result, the modified extracted image data is created. The modified extracted image data is not limited to the method in which the operator corrects using the input unit 43, and the worker corrects the boundary lines 532a and 532b with respect to the printed matter on which the extracted image data is printed, and the corrected image data is corrected. The printed matter may be read into the combustion determination device 40 by using a scanner or the like as the input unit 43 and input.

After that, in step ST6, the learning unit 413 of the combustion determination device 40 learns the boundary identification and updates the combustion state learning model 44b. That is, the learning unit 413 uses the transparent image data acquired in step ST1 or the boundary image data acquired in step ST3 as input parameters for learning, and the modified extracted image data input from the input unit 43 as output parameters for learning. The combustion state learning model 44b is updated using the data set as training data. The learning unit 413 may update the combustion state learning model 44b by modifying the coefficients of each parameter with respect to the combustion state learning model 44b by using the modified extraction image data or the like by an inverse error propagation method or the like. .. After the update of the combustion state learning model 44b is completed, the learning unit 413 lowers the flag that needs to be learned.

Further, by the same method as the above update of the combustion state learning model 44b, the transmission image data acquired in step ST1 is used as a learning input parameter, and the corrected boundary image data input by the operator from the input unit 43 in step ST5. The boundary identification learning model 44a may be further updated by using the input / output data set with the above as the training output parameter as the training data. Further, when the rule-based image recognition algorithm is adopted, or when the boundary identification learning model 44a and the combustion state learning model 44b are not updated, the processes of steps ST4 to ST6 may be omitted.

Next, in step ST7, the combustion determination unit 412 of the control unit 41 calculates the height of the layer of the waste 52 on the grate (hereinafter referred to as the waste layer height H). Specifically, the combustion determination unit 412 of the combustion determination device 40 is based on the boundary portion between the step wall 13 and the waste 52 on the grate at the boundary line 532, and the height of the waste 52 on the grate (hereinafter, waste). The material layer height H) is calculated. Here, as shown in FIGS. 6 and 7, the boundary portion between the step wall 13 and the waste 52 on the grate at the boundary line 532 is uneven. The combustion determination unit 412 as a calculation unit has a height h from the intersection of the grate 4 and the step wall 13 determined in the boundary image data to the upper part of the waste 52 on the grate obtained by the boundary line 532. Is averaged in the width direction to calculate the waste layer height H.

In the boundary image data and the extracted image data, the area of the waste 52 on the grate sandwiched between the boundary line 532 and the intersection of the grate 4 and the step wall 13 is derived, and the derived area is a constant. The waste layer height H may be calculated by dividing by the width of a certain furnace 1 (widths on the left and right in FIG. 7) and averaging. The calculated waste layer height H is a physical quantity corresponding to the waste 50 (waste 52 on the grate) supplied on the grate 4. The control unit 41 transmits the calculated information on the waste layer height H of the waste 52 on the grate to the combustion control device 30. The control unit 31 of the combustion control device 30 stores the received information on the waste layer height H in the storage unit 32.

Next, in step ST8, the combustion determination unit 412 functions as a combustion amount measuring device and calculates the combustion amount in the waste 52 on the grate. That is, as shown in FIG. 7, in the extracted image data, a region where the combustion temperature of the waste 52 on the grate is equal to or higher than a predetermined temperature is surrounded by the boundary line 532b and extracted as the combustion portion 52A (in FIG. 7, in FIG. 7). White part). Here, in the extracted image data, for example, the brightness corresponding to the combustion temperature is set for each pixel of the image. Instead of the pixels, the combustion unit 53A may be divided into a plurality of predetermined meshes, and the brightness corresponding to the combustion temperature may be set for each mesh (calculation grid). Further, instead of the brightness, the information of the measured value of the temperature may be embedded in the extracted image data as the meta information associated with the pixel or the mesh.

FIG. 9 is a diagram schematically showing a combustion portion of an incinerator for explaining an information processing method according to an embodiment of the present invention. As shown in FIG. 9, in the furnace 1, the pre-supply waste 51 falls on the grate 4 in response to the movement of the waste supply device 3. In the grate 4, along the upstream side to the downstream side in the moving direction of the waste 50, mainly, a drying stage for drying the waste 50, a combustion stage for burning the waste 50, and a waste whose combustion has been completed. A post-combustion stage is provided after transporting 50 combustion ash. In this case, usually, the combustion temperature of the grate on the waste 52 becomes hottest part of the combustion stage, the portion indicated by hatching in FIG. 9 corresponds to the combustion amount V _F of the combustion section 52A. The present inventor has made diligent studies on this point, and the combustion amount V _F of the waste 52 on the grate is proportional to the area of the combustion unit 52A, the maximum temperature of the combustion unit 52A, or the integrated temperature value of the combustion unit 52A. I came up with. That is, the combustion determination unit 412 generates the extracted image data by performing thermal image processing on the transmission image data and the boundary image data, and calculates the area, the maximum temperature, or the integrated temperature value in the combustion unit 52A. Thereby, the combustion amount V _F can be defined. _{In other words, the combustion amount V F} of the waste 52 on the grate can be grasped from the area, the maximum temperature, or the integrated temperature value of the combustion unit 52A extracted in the extracted image data. Control unit 41, in the calculated combustion unit 52A, and transmits the information area, information of the maximum temperature, and at least one information of information of temperature integrated value to a combustion control apparatus 30 as information of the combustion volume V _F. The control unit 31 of the combustion control device 30 stores the received _{information on the amount of combustion V F in} the storage unit 32.

Next, in step ST9 shown in FIG. 8, the combustion determination unit 412 functions as a combustion point position measuring device and executes a method for measuring the position of the combustion point F. That is, the boundary line 53c between the waste 52 on the grate and the grate 4 is a specific combustion point of the waste 50. Usually, the specific combustion point of the waste 50 is uneven. Therefore, as shown in FIG. 7, the combustion determination unit 412 averages the boundary between the grate 4 and the combustion unit 52A in the boundary line 532b drawn in the extracted image data in the width direction of the furnace 1. In other words, in the combustion determination unit 412, the combustion point F of the waste 50 (waste 52 on the grate) is on the line along the moving direction of the grate 4 based on the boundary line 532b drawn in the extracted image data. Calculate which position of the throat is on average. As a result, the combustion determination device 40 can derive the combustion point F of the waste 50 on the grate 4. The control unit 41 transmits the position information of the combustion point F of the derived waste 50 to the combustion control device 30. The control unit 31 of the combustion control device 30 stores the received position information of the combustion point F in the storage unit 32. The above steps ST7, ST8, and ST9 are not limited to the above-mentioned order, and may be performed in parallel, in reverse order, or in any order.

Next, in step ST10 shown in FIG. 8, the control unit 31 of the combustion control device 30 has a waste layer height H of the waste 52 on the grate, which has been derived in advance corresponding to the structure of the furnace 1. The reference combustion point region, which is a predetermined range having an appropriate relationship between the combustion point F and the combustion point F, is read from the storage unit 32. FIG. 10 is a graph showing a reference combustion point region between the combustion point F and the waste layer height H used in the combustion control method according to the embodiment of the present invention.

As shown in FIG. 10, there is an appropriate relationship between the waste layer height H of the waste 52 on the grate and the combustion point F, and this region is referred to as a reference combustion point region in the present specification. The data in the reference combustion point region is stored in the storage unit 32. The control unit 31 reads out the information of the reference combustion point region shown in FIG. 10 stored in the storage unit 32. On the other hand, the control unit 31 reads out the position information of the waste layer height H and the combustion point F acquired from the combustion determination device 40 from the storage unit 32. The control unit 31 compares the read position information of the waste layer height H and the combustion point F with the reference combustion point region shown in FIG. In the example shown in FIG. 10, the relationship between the transmitted waste bed height H and the combustion point F from combustion determination unit 40, or be present at the position of for example the measurement point P ₁₁ is the graph, the measurement point P ₁₂ It exists in the position of. The measurement point P ₁₁ indicates that the combustion point F is located on the downstream side, that is, on the image pickup unit 26 side with respect to the waste layer height H. The measurement point P ₁₂ indicates that the combustion point F is located on the upstream side, that is, on the step wall 13 side with respect to the waste layer height H.

Next, the control unit 31 proceeds to step ST11 shown in FIG. 8 is previously derived in correspondence to the structure of the furnace 1, the waste bed height grate on waste 52 H combustion amount V _F The reference combustion amount region, which is a predetermined range having an appropriate relationship with the above, is read from the storage unit 32. FIG. 11 is a graph showing a reference combustion amount region between the _{combustion amount V F} and the waste layer height H used in the combustion control method according to the embodiment of the present invention.

As shown in FIG. 11, there is an appropriate relationship between the waste layer height H of the waste 52 on the grate and the combustion amount V _F, and this region is referred to as a reference combustion amount region in the present specification. On the other hand, the control unit 31 reads out the information of the waste layer height H and the combustion amount V _{F acquired from the combustion determination device 40 from the storage unit 32.} The control unit 31 compares the read out information on the waste layer height H and the combustion amount V _{F with} the reference combustion amount region shown in FIG. In the example shown in FIG. 11, the relationship between the waste layer height H and the combustion amount V _F transmitted from the combustion determination device 40 exists, for example, at _{the position of the measurement point P 21} on the graph, or the measurement point P. It exists in _{22 positions.} The measurement point P _{21 indicates that the combustion amount V F} is large with respect to the waste layer height H and the combustion amount V _F is excessive. Similarly, the measurement point P _{22 indicates that the combustion amount V F} is small with respect to the waste layer height H and the combustion amount V _F is insufficient. The above steps ST10 and ST11 are not limited to the above-mentioned order, and may be performed in parallel or in the reverse order.

Next, the control unit 31 proceeds to step ST12 shown in FIG. 8, combustion determination unit 40 transmitted waste bed height H from, based on the position information, and information of the combustion amount V _F of the combustion point F , The combustion control method is executed so that the combustion state of the waste 52 on the grate becomes appropriate. That is, the control unit 31 corrects the control parameters in the combustion control device 30 described above based on the acquired information, and determines the waste supply device feed speed (dust supply speed) and the grate feed speed (grate speed). The furnace 1 is controlled by adjusting the amount of combustion air, the amount of secondary air (amount of air blown), and the temperature of combustion air as needed. Specifically, Table 1 shows an example of control based on the position information of the combustion point F.

As shown in Table 1, when the fire point F is shifted to the upstream side than the reference combustion point area, namely when the combustion state located in example measurement point P ₁₂ in FIG. 10, the speed of the grate 4 (Tue It is preferable to perform control to increase the lattice speed). This is because it is presumed that the amount of waste 52 on the grate is generally low. Further, when the speed of the grate 4 is increased, the waste layer may suddenly become thin, so it is preferable to control the speed of dust supply. Further, when the combustion point F shifts to the upstream side with respect to the reference combustion point region, it is preferable to perform control to reduce the amount of air blown as a whole. This is because when the combustion point F shifts to the upstream side, it is presumed that the waste 52 on the grate is the waste 50 having a high calorie that is easily burned. In this case, it is preferable to control the temperature of the combustion air to be lowered in order to suppress excessive combustion. Thus, combustion conditions and waste bed height H is the relationship between the combustion point F is, as indicated by the arrow, is controlled in a direction to move from the measurement point P ₁₂ to the reference combustion point region.

On the contrary, when the combustion point F transitions to the downstream side with respect to the reference combustion point region, that is, when the combustion state is _{located at the measurement point P 11} in FIG. 10, the control is opposite to that of the measurement point P _12. It is preferable to do. Specifically, when the combustion point F transitions to the downstream side with respect to the reference combustion point region, it is preferable to perform control to reduce the grate speed of the grate 4. The deceleration includes a stop. This is because it is estimated that the amount of waste 52 on the grate is generally large. In this case, there is a high possibility that the waste 50 will be in an unburned state, so it is necessary to suppress the generation of the unburned waste 50. Further, when the grate 4 is decelerated or further stopped, the possibility that a large amount of waste 50 is loaded on the drying stage of the grate 4 increases. Therefore, it is necessary to reduce the supply of the waste 50 onto the grate 4, and it is preferable to control the deceleration of the dust supply speed. Further, when controlling to increase the amount of air blown as a whole, it is preferable to increase the supply ratio of the post-combustion stage of the amount of air blown in order to suppress the generation of unburned waste 50. As described above, the combustion state, which is the relationship between the waste layer height H and the combustion point F, is controlled in the direction of moving from _{the measurement point P 11 to the reference combustion point region as indicated by the arrows in the figure.}

Next, Table 2 shows an example of control based on the information of the combustion amount V _F. The following control is the control executed by the control unit 31 of the combustion control device 30.

As shown in Table 2, when the combustion amount V _F is larger than the reference combustion rate region, that is, when positioned in the combustion state for example the measurement point P ₂₁ 11, that performs control to decelerate the grate speed Is preferable. The deceleration includes a stop. This is because there is a high possibility that excessive combustion has occurred in the waste 52 on the grate. When the grate speed is reduced, the possibility that a large amount of waste 50 is loaded on the drying stage of the grate 4 increases. Therefore, it is preferable to control the deceleration of the dust supply speed. When there is a high possibility that excessive combustion has occurred, it is preferable to perform control to reduce the amount of air blown as a whole and control to lower the combustion air temperature. As described above, the combustion state, which is the relationship between the waste layer height H and the combustion amount V _F , is controlled in the direction of moving from _{the measurement point P 21 to the reference combustion amount region as shown by the arrows in the figure.}

On the contrary, when the combustion amount V _F is smaller than the reference combustion amount region, that is, when the combustion state is _{located at the measurement point P 22} in FIG. 11, the control opposite to the case of the measurement point P _{21 is performed.} Is preferable. Specifically, if the combustion amount V _F is smaller than the reference combustion amount region, there is a high possibility that the combustion is insufficient. It is preferable to control in the direction of activation. That is, it is preferable to control to increase the grate speed and to increase the dust supply speed accordingly. In addition, it is preferable to control to increase the amount of air blown as a whole and to increase the temperature of the combustion air. As described above, the combustion state, which is the relationship between the waste layer height H and the combustion amount V _F , is controlled in the direction of moving from _{the measurement point P 22 to the reference combustion amount region as shown by the arrows in the figure.}

Or control of, the or performed independently and go, is related to the control based on the control and combustion amount V _F based on the combustion point F in the case based on when the combustion amount V _F based on the combustion point F Is possible. As a result, the combustion state of the waste 50 in the furnace 1 can be maintained satisfactorily. When the control based on the combustion point F and the control based on the combustion amount V _F conflict with each other, the combustion determination unit 412 comprehensively determines the conflicting control and determines the final control. Is also good. As described above, the control process of the furnace 1 according to the present embodiment is completed.

(Modification example)
Next, a modified example of the above-described embodiment will be described. FIG. 12 is a diagram showing a modified example of the extracted image data. In the modified example, in step ST3 shown in FIG. 8, the combustion determination unit 412 determines the boundary between the waste 50 and another object, that is, the waste 50, the waste supply unit 12, and the step wall with respect to the transmitted image data. A boundary line 54 is drawn for each boundary with 13 and the grate 4. As shown in FIG. 12, the boundary generation unit 411 draws, for example, a boundary line 541 with respect to the boundary between the pre-supply waste 51 and the step wall 13 for the transmitted image data. The boundary generation unit 411 draws boundary lines 542 and 544 with respect to the boundary between the waste 52 on the grate and the step wall 13 and the grate 4, respectively. As described above, the boundary generation unit 411 generates boundary image data in which the boundary line 53 is drawn with respect to the transparent image data. The boundary generation unit 411 outputs the generated boundary image data to the combustion determination unit 412.

Subsequently, the combustion determination unit 412 sets the combustion unit 52A (region A32) having a temperature higher than the predetermined temperature in the waste 52 on the grate and another region having a temperature lower than the predetermined temperature with respect to the boundary image data input from the boundary generation unit 411. The boundary line 543 is drawn by distinguishing it from A31. As described above, the combustion determination unit 412 generates the extracted image data in which the boundary line 543 is drawn with respect to the boundary image data. The combustion determination unit 412 may draw a boundary line 544 based on the identified combustion unit 52A. Further, the combustion determination unit 412 may generate the extracted image data in which the boundary line 542 and the boundary lines 543 and 544 are drawn with respect to the transmission image data input from the image pickup unit 26. In this case, it is not necessary to execute the boundary image data generation process by the boundary generation unit 411. That is, the extracted image data may be any image data that can extract the existing region of the waste 52 on the grate and can distinguish the combustion portion 52A and the region lower than the combustion portion 52A in the waste 52 on the grate. .. Further, the combustion determination unit 412 outputs to the boundary generation unit 411 the result of discriminating the combustion unit 52A (region A32) having a temperature higher than the predetermined temperature from the other region A31 having a temperature lower than the predetermined temperature in the boundary image data, and outputs the result to the boundary generation unit 411. 411 may draw a boundary line 542,543,544. Other configurations are the same as those of the above-described embodiment.

According to one embodiment described above, the waste 52 on the grate on the grate 4 in the incinerator 1 is imaged, and the boundary between the waste 52 on the grate 52 and the region where other objects exist. The boundary lines 53 and 54 are generated and superimposed on each other, and the region where the combustion temperature is equal to or higher than the predetermined temperature in the waste 52 on the grate is identified as the incinerator 52A, and the waste 52 on the grate is in the waste 52. By acquiring the combustion state based on the information that can be acquired from the combustion unit 52A, it is possible to grasp the combustion state of the waste 50 supplied on the grate 4 in the grate incinerator. That is, since the combustion state derived from the relationship between the waste layer height H and the position information of the combustion point F or the combustion amount V _F can be grasped, the combustion of the waste 50 can be appropriately controlled and the combustion is stabilized. Can be made to.

Further, since an appropriate combustion point F exists as a reference combustion point region with respect to the waste layer height H, the current combustion point F on the grate 4 is significantly deviated from the waste layer height H. If it is, for example, measurement points P _11, when in the P _12, allowing stable combustion controlled by performing control according to the deviation between the current combustion point F and the reference combustion point region. Similarly, the combustion amount V _F, relative to the waste bed height H, suitable for combustion amount V _F is present as a reference combustion rate region, extracting combustion quantity V _F waste in the combustion section 52A that If you are significantly deviate in comparison with the layer height H, for example, when in the measuring point P _21, P _22, by performing control according to the deviation amount between the current combustion quantity V _F and the reference combustion rate region Stable combustion control becomes possible. Further, by performing the control based on the combustion point F and the control based on the combustion amount V _F , more stable combustion control can be performed.

Although one embodiment of the present invention has been specifically described above, the present invention is not limited to the above-mentioned one embodiment, and various modifications based on the technical idea of the present invention are possible. For example, the numerical values given in the above-described embodiment are merely examples, and different numerical values may be used if necessary. The invention is not limited.

For example, in the above-described embodiment, the boundary identification learning model 44a and the combustion state learning model 44b are stored in the storage unit 44, but they can also be stored in the storage unit of another server that can communicate via the network. be. That is, it is also possible to store the boundary identification learning model 44a in the storage unit of the image server that can communicate with the combustion determination device 40 via a network such as a public network. In this case, the transmitted image data captured by the image pickup unit 26 is transmitted to the image server via the network and stored in the storage unit. After that, the control unit of the image server draws the boundary lines 53 and 54 with respect to the transmission image data to generate the boundary image data in response to the request from the combustion determination device 40, and transmits the boundary image data to the combustion determination device 40. .. Similarly, the combustion state learning model 44b can be stored in the storage unit of the determination server that can communicate through the network. In this case, the determination server receives and acquires image data such as transparent image data and boundary image data from the storage unit of the image server. The control unit of the determination server extracts the combustion unit 52A based on the acquired transmission image data and boundary image data, and derives _{the waste layer height H, the position information of the combustion point F, and the combustion amount V F.} And sends it to the combustion control device 30. In other words, another image learning unit having the functions of the boundary generation unit 411 and the learning unit 413 and another combustion learning unit having the functions of the learning unit 413 and the combustion determination unit 412 can communicate with each other via a network. It may be provided in the device. Further, the boundary generation unit 411, the combustion determination unit 412, and the learning unit 413 may be provided in different devices capable of communicating with each other via the network.

Further, for example, in the above-described embodiment, deep learning using a neural network is used as an example of machine learning, but machine learning based on other methods may be performed. Other supervised learning, such as support vector machines, decision trees, naive Bayes, k-nearest neighbors, etc., may be used. Also, semi-supervised learning may be used instead of supervised learning.

Further, for example, combustion control is performed based on the waste layer height H derived from the grate waste 52 and the combustion unit 52A extracted by the combustion determination device 40, and at least one of the _{combustion point F and the combustion amount V F.} Using the results such as the amount of power generation and the amount of steam generated when the device 30 controls the furnace 1 as a reward, machine learning such as reinforcement learning and deep reinforcement learning is performed to obtain the boundary identification learning model 44a and the combustion state learning model 44b. It may be generated or updated.

Further, for example, in the above-described embodiment, an example in which a grate incinerator having a stepped wall is used as the incinerator has been described, but the incinerator is not necessarily limited to the grate incinerator. In the case of an incinerator other than a grate incinerator having a stepped wall, the extracted image data is based on the combustion temperature of the waste 50 in addition to the boundary between the waste 50 and other regions with respect to the transmitted image data. Image data that is generated by generating an isotherm as a boundary line and superimposed on the image data may be used. In this case, an isotherm can be generated at, for example, every 100 ° C. with respect to the combustion temperature of the waste 50 to serve as a boundary line. Further, as the boundary image data, the boundary line was generated by geometrically distinguishing the waste in the incinerator in addition to the boundary between the waste 50 and the other area with respect to the transmission image data, and the boundary line was superimposed and drawn. Image data may be used. Also in this case, it is possible to generate the extracted image data in which the boundary line for distinguishing the region where the combustion temperature is equal to or higher than the predetermined temperature and the region where the combustion temperature is lower than the predetermined temperature is drawn with respect to the boundary image data. That is, as the boundary image data, various boundaries according to the structure of the incinerator are set for the transmission image data in addition to the boundary between the waste 50 and the other area, and the boundary line is generated and superimposed and drawn. It is possible to use image data. Further, as the extracted image data, an image data obtained by generating an isotherm based on the combustion temperature of the waste 50 as a boundary line and superimposing the drawing on the image data may be used.

(recoding media)
In one of the above embodiments, a computer or other machine or a device such as a wearable device (hereinafter referred to as a computer) can read a program for executing a processing method executed by the combustion control device 30 or the combustion determination device 40. It can be recorded on a recording medium. By having a computer or the like read and execute the program of this recording medium, the computer or the like functions as a mobile control device. Here, a recording medium that can be read by a computer or the like is a non-temporary recording medium that can store information such as data and programs by electrical, magnetic, optical, mechanical, or chemical action and can be read from a computer or the like. Recording medium. Among such recording media, those that can be removed from a computer or the like include, for example, a memory such as a flexible disk, a magneto-optical disk, a CD-ROM, a CD-R / W, a DVD, a BD, a DAT, a magnetic tape, or a flash memory. There are cards and so on. Further, as a recording medium fixed to a computer or the like, there are a hard disk, a ROM, and the like. Further, the SSD can be used as a recording medium that can be removed from a computer or the like, or as a recording medium fixed to the computer or the like.

Further, the program to be executed by the combustion control device 30 and the combustion determination device 40 according to the embodiment is configured to be stored on a computer connected to a network such as the Internet and provided by downloading via the network. Is also good.

(Other embodiments)
In one embodiment, the above-mentioned "part" can be read as "circuit" or the like. For example, the control unit can be read as a control circuit.

In the description of the flowchart in the present specification, the context of the processing between the steps is clarified by using expressions such as "first", "after", and "continue", but the present embodiment is implemented. The order of processing required for this is not uniquely defined by those representations. That is, the order of processing in the flowchart described in the present specification can be changed within a consistent range.

Further effects and variations can be easily derived by those skilled in the art. The broader aspects of the present disclosure are not limited to the particular details and representative embodiments described and described above. Thus, various modifications can be made without departing from the spirit or scope of the overall concept of the invention as defined by the attached claims and their equivalents.

1 Furnace 1a Furnace wall 2 Waste inlet 3 Waste supply device 4 Grate 5 Ash drop port 6 Combustion air blower 7 Combustion outlet 8 Chimney 9 Boiler 9a Heat exchanger 9b Steam drum 10 Secondary air blow port 11 Secondary Air blower 12 Waste supply unit 13 Step wall 14 Combustion air damper 14a, 14b, 14c, 14d Under-grate combustion air damper 15 Secondary air damper 16 Intermediate ceiling 17 Combustion chamber gas thermometer 18 Main flue gas thermometer 19 Gas thermometer at the bottom of the furnace outlet 20 Gas thermometer at the middle of the furnace outlet 21 Gas thermometer at the outlet of the furnace 22 Oxygen concentration meter at the outlet of the boiler 23 Gas concentration meter 24 Exhaust gas flow meter 25 Steam flow meter 26 Imaging unit 30 Combustion control device 31, 41 Control unit 32, 44 Storage unit 33 Operation amount adjustment unit 40 Combustion judgment device 42 Output unit 43 Input unit 44a Boundary identification learning model 44b Combustion state learning model 50 Waste 51 Pre-supply waste 52 Grate waste 52A Combustion unit 53,531 , 532,532a, 532b, 54,541,542,543,544 Boundary line 331 Combustion air amount adjustment unit 332 Air amount ratio adjustment unit 333 Secondary air amount adjustment unit 334 Waste supply device Feed speed adjustment unit 335 Grate Feed speed adjustment unit 411 Boundary generation unit 412 Combustion determination unit 413 Learning unit

Claims (13)

Equipped with a control unit with hardware
The control unit
The thermal image information obtained by measuring the area containing the waste in the waste incinerator for incinerating the waste is acquired and stored in the storage unit.
Based on the thermal image information read from the storage unit, a combustion region in which the combustion temperature of the waste is equal to or higher than a predetermined temperature is extracted.
An information processing device that derives at least one of the amount of combustion of the waste in the combustion region and the position of the combustion point at which the waste burns out in the combustion region based on the extracted combustion region. The information processing apparatus according to claim 1, wherein the combustion amount is a value based on the area of the combustion region, the maximum temperature in the combustion region, or the integrated temperature value in the combustion region. The control unit
With respect to the image data generated from the thermal image information read from the storage unit, the boundary between the combustion region in the waste incinerator and the region other than the combustion region is identified, and at least the boundary is defined. The information processing apparatus according to claim 1 or 2, wherein a boundary line that defines a part thereof is generated, and processed image data including the boundary line is generated. The control unit
The image data is acquired from the storage unit as an input parameter, and the image data read from the storage unit is input to the combustion state learning model.
The processed image data in which the boundary line is generated for the image data is output as an output parameter.
The combustion state learning model is a learning model generated by machine learning using the image data as a learning input parameter and the processed image data in which the boundary line is drawn with respect to the image data as a learning output parameter. The information processing apparatus according to claim 3. The waste incinerator is equipped with a grate for moving the waste.
The information processing apparatus according to claim 3 or 4, wherein the boundary line is generated at the boundary between the waste and the grate in the image data. The control unit
The information processing apparatus according to any one of claims 1 to 5, which derives the combustion amount and the position of the combustion point based on the extracted combustion region. One of claims 1 to 6 for deriving at least one of the combustion amount and the position of the combustion point from the thermal image information obtained by measuring the region containing the waste in the waste incinerator for incinerating the waste. Obtain at least one of the combustion point and the combustion amount obtained by the information processing apparatus according to the section.
At least one of the acquired combustion point and the combustion amount is stored in the storage unit, and the storage unit is stored.
A combustion control device including a combustion control unit that controls the waste incinerator based on at least one of the combustion amount of the waste and the position of the combustion point. The waste incinerator includes a grate for moving the waste and a waste supply means for supplying the waste onto the grate.
The combustion control unit
Based on at least one of the combustion amount of the waste and the position of the combustion point, at least one of the supply speed of supplying the waste by the waste supply means and the grate speed of the grate is controlled. The combustion control device according to claim 7. The combustion control unit
The combustion control device according to claim 7 or 8, wherein at least one of the air blow rate and the air temperature is controlled based on at least one of the combustion amount of the waste and the position of the combustion point. The combustion control unit
A predetermined range of the position of the combustion point corresponding to the height of the layer of the waste in the waste incinerator is read from the storage unit as a reference combustion point region.
Information on the height of the waste layer and information on the position of the combustion point are acquired from the information processing apparatus.
The invention according to any one of claims 7 to 9, wherein the waste incinerator is controlled based on the height of the acquired waste layer and the position of the combustion point and the deviation from the reference combustion point region. Combustion control device. The combustion control unit
A predetermined range of the combustion amount corresponding to the height of the waste layer in the waste incinerator is read from the storage unit as a reference combustion amount region.
Information on the height of the waste layer and information on the amount of combustion are acquired from the information processing apparatus, and the information is obtained.
The combustion according to any one of claims 7 to 10, which controls the waste incinerator based on the height of the acquired waste layer and the deviation between the combustion amount and the reference combustion amount region. Control device. It is an information processing method executed by an information processing device equipped with a control unit having hardware.
The control unit
The thermal image information obtained by measuring the area containing the waste in the waste incinerator for incinerating the waste is acquired and stored in the storage unit.
Based on the thermal image information read from the storage unit, a combustion region in which the combustion temperature of the waste is equal to or higher than a predetermined temperature is extracted.
An information processing method for deriving at least one of the combustion amount of the waste in the combustion region and the position of the combustion point where the waste burns out in the combustion region based on the extracted combustion region. It is a combustion control method executed by a combustion control device equipped with a combustion control unit that controls a waste incinerator that incinerates waste.
The combustion control unit
The information processing method according to claim 12, wherein at least one of the combustion amount and the position of the combustion point is derived from the thermal image information obtained by measuring the region containing the waste in the waste incinerator for incinerating the waste. At least one of the combustion point and the combustion amount is obtained by
At least one of the acquired combustion point and the combustion amount is stored in the storage unit, and the storage unit is stored.
A combustion control method for controlling the waste incinerator based on at least one of the amount of combustion of the waste and the position of the combustion point.

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