JP7507931B1 - Combustion equipment system and information processing method - Google Patents

Abstract

[Problem] To provide a system for combustion equipment and an information processing method that can reduce equipment costs. [Solution] The system for combustion equipment includes an acquisition unit that acquires images taken by a single camera that captures the inside of the incinerator from the downstream side of the transport direction of the materials to be incinerated in the incinerator, a depth information generation unit that generates depth information as seen from the camera by inputting the image taken by the single camera acquired by the acquisition unit into a trained model, and a processing unit that performs combustion control or monitoring of the incinerator based on the depth information generated by the depth information generation unit. [Selected Figure] Figure 4

Description

This disclosure relates to a system for combustion equipment and an information processing method.

Patent document 1 discloses an incinerator in which multiple infrared cameras are used to capture multiple thermal images from different viewpoints, and a three-dimensional thermal image is created based on the captured multiple thermal images to evaluate the combustion state.

JP 2021-67379 A

However, the incinerator described in Patent Document 1 requires the installation of multiple cameras, making it difficult to reduce equipment costs.

The present disclosure has been made to solve the above problems, and aims to provide a combustion equipment system and information processing method that can reduce equipment costs.

In order to solve the above problems, the combustion equipment system of the present disclosure includes an acquisition unit that acquires an image taken by a single camera that photographs the inside of the incinerator from the downstream side of the transport direction of the powder layer in the incinerator, a depth information generation unit that generates depth information as seen from the camera by inputting the image taken by the single camera acquired by the acquisition unit into a trained model, and a processing unit that corrects the height of the garbage layer that exists in a direction away from the camera than the highest top of the garbage layer in the depth information generated by the depth information generation unit using a correction coefficient set based on an actual measured value of the distribution of the height of the garbage layer prepared in advance, and performs combustion control or monitoring of the incinerator based on the corrected depth information .

In order to solve the above problems, the information processing method of the present disclosure includes one or more computers acquiring an image taken by a single camera that photographs the inside of the incinerator from the downstream side of the transport direction of the materials to be incinerated, inputting the acquired image taken by the single camera into a trained model to generate depth information as seen from the camera, correcting the height of the garbage layer that exists in a direction away from the camera from the highest top of the garbage layer in the generated depth information using a correction coefficient set based on an actual measured value of the distribution of the height of the garbage layer that has been prepared in advance, and performing combustion control or monitoring of the incinerator based on the corrected depth information .

The combustion equipment system and information processing method disclosed herein can reduce equipment costs.

1 is a diagram showing an overall configuration of a combustion facility according to an embodiment of the present disclosure. FIG. FIG. 2 is a top view of a fire grate of a combustion facility according to an embodiment of the present disclosure and a wind box provided below the fire grate. FIG. 2 is a top view of a portion of a furnace according to an embodiment of the present disclosure to which secondary air is supplied from an upstream secondary air line and a downstream secondary air line. 1 is a block diagram showing a functional configuration of a combustion equipment system according to an embodiment of the present disclosure. FIG. FIG. 2 is a diagram illustrating an example of an image captured by a camera according to an embodiment of the present disclosure. 1 is a diagram showing an example of a depth map as depth information generated by a depth information generating unit according to an embodiment of the present disclosure; FIG. 1 is a diagram showing an example of a three-dimensional measurement result inside an incinerator according to an embodiment of the present disclosure. FIG. 13 is a diagram showing an example of a distribution of heights of garbage layers extracted from a three-dimensional measurement result according to an embodiment of the present disclosure. This figure shows an example of estimated values of the height of the garbage layer at multiple positions in the furnace width direction in a section corresponding to the wind box that is located third from the upstream side to the downstream side in the conveying direction, in an embodiment of the present disclosure. This figure shows an example of estimated values of the height of the garbage layer at multiple positions in the furnace width direction in a section corresponding to the fourth wind box from upstream to downstream in the conveying direction, in an embodiment of the present disclosure. FIG. 13 illustrates a distribution of trash layer height estimates per block according to an embodiment of the present disclosure. FIG. 13 illustrates a distribution of trash layer height estimates corrected by a correction factor according to an embodiment of the present disclosure. 1 is a flowchart showing a flow of an information processing method according to an embodiment of the present disclosure. FIG. 11 is a diagram showing the concentration distribution of carbon dioxide when distribution control of primary air and secondary air is not performed. 1 is a diagram showing a carbon dioxide concentration distribution when the distribution control of primary air and secondary air is performed by a control device according to an embodiment of the present disclosure. FIG. FIG. 2 is a hardware configuration diagram illustrating a configuration of a computer according to an embodiment of the present disclosure.

Hereinafter, an embodiment of the present disclosure will be described with reference to the drawings. In the following description, the same reference numerals are used for components having the same or similar functions. Furthermore, duplicate descriptions of those components may be omitted. In this disclosure, "based on XX" means "based on at least XX" and may include the case where it is based on another element in addition to XX. Furthermore, "based on XX" is not limited to the case where XX is directly used, but may also include the case where it is based on XX that has been subjected to calculation or processing. In this disclosure, "XX or YY" is not limited to either XX or YY, but may include both XX and YY. This also applies to the case where there are three or more selective elements. "XX" and "YY" are any element (for example, any information).

In addition, in this disclosure, "acquire" is not limited to actively acquiring by sending a transmission request, but may also include acquiring by passively receiving information transmitted from another device. Furthermore, "acquire" is not limited to directly acquiring the desired information (information to be acquired) from outside, but may also include generating and acquiring the desired information by performing calculations or processing on information obtained from outside.

For ease of explanation, in this disclosure, the side of the furnace body 20 on which the hopper 11 is located is defined as the "front," and the opposite side as the "rear." In addition, "left" and "right" are defined based on the direction from the furnace body 20 toward the hopper 11.

(Embodiment)
<1. Overall configuration of the combustion facility>
FIG. 1 is a diagram showing the overall configuration of a combustion facility 1 according to an embodiment. The combustion facility 1 is a combustion facility in which, for example, urban waste, industrial waste, or biomass is incinerated as material G. For convenience of explanation, the "material to be incinerated" may be referred to as "waste" below. The combustion facility 1 is, for example, a stoker furnace. Note that the combustion facility 1 is not limited to a stoker furnace, and may be another type of combustion facility. In this embodiment, the combustion facility 1 includes, for example, an incinerator 2, a heat recovery boiler 3, a cooling tower 4, a dust collector 5, a flue 6, a chimney 7, and a control device 100.

The incinerator 2 is a furnace that burns waste G fed into a hopper 11 (described later) while transporting it. As waste G is burned in the incinerator 2, exhaust gas is generated in the incinerator 2. The generated exhaust gas is sent to a heat recovery boiler 3 provided at the top of the incinerator 2. The heat recovery boiler 3 exchanges heat between the exhaust gas generated in the incinerator 2 and water to heat the water and generate steam. The exhaust gas that passes through the heat recovery boiler 3 is cooled in a temperature reducing tower 4 and then sent to a dust collector 5. After soot and dust are removed from the exhaust gas in the dust collector 5, it is discharged into the atmosphere through a flue 6 and a chimney 7.

<2. Incinerator>
Next, a detailed description will be given of the incinerator 2. The incinerator 2 has, for example, a supply mechanism 10, a furnace body 20, a stoker 30, a plurality of wind boxes 41, a discharge chute 42, a furnace 43, and a blower mechanism 50.

(Supply mechanism)
The supply mechanism 10 is a mechanism for temporarily storing the waste G transported by a crane (not shown) and sequentially supplying the temporarily stored waste G to a treatment space V of the furnace body 20 (described later). The supply mechanism 10 has, for example, a hopper 11 and a feeder 12.

The hopper 11 is a storage section provided to supply waste G to the inside of the furnace body 20. Waste G transported by a crane (not shown) is fed into the hopper 11. The hopper 11 has an inlet section 11a through which the waste G is fed from the outside, and an outlet section 11b that guides the supplied waste G toward a treatment space V inside the furnace body 20, which will be described later.

The feeder 12 is provided at the outlet portion 11b of the hopper 11. The feeder 12 is plate-shaped and is disposed along the bottom of the outlet portion 11b of the hopper 11. The feeder 12 is driven by an extrusion device (not shown) and pushes out the waste G accumulated inside the hopper 11 toward the treatment space V of the furnace body 20.

(furnace body)
The furnace body 20 is provided adjacent to the hopper 11, and is a facility for burning the waste G while transporting it. Hereinafter, the transport direction of the waste G in the combustion facility 1 is referred to as the "transport direction Z". The furnace body 20 has a drying stage 20a, a combustion stage 20b, and a post-combustion stage 20c in this order from the upstream side to the downstream side in the transport direction Z. The drying stage 20a is a region in which the waste G supplied from the hopper 11 is dried prior to combustion on the stoker 30. The combustion stage 20b and the post-combustion stage 20c are regions in which the waste G in a dried state after passing through the drying stage 20a is burned on the stoker 30. In the combustion stage 20b, diffusion combustion occurs due to pyrolysis gas generated from the waste G, and a luminous flame F is generated. In the post-combustion stage 20c, fixed carbon combustion occurs after diffusion combustion of the waste G, so a luminous flame F is not generated. The combustion stage 20b and the post-combustion stage 20c are an example of a treatment space V in which the waste G is burned. A camera 70 is installed in the furnace body 20. The camera 70 will be described in detail later.

(Stalker)
The stoker 30 includes a plurality of grates 31. The plurality of grates 31 form a stoker surface 30a which is the bottom surface of the furnace body 20 (for example, the bottom surface of the treatment space V). The waste G is supplied in a layer to the stoker surface 30a by the supply mechanism 10. The stoker surface 30a is provided across the drying stage 20a, the combustion stage 20b, and the post-combustion stage 20c described above. The plurality of grates 31 include a fixed grate and a movable grate. The fixed grate is fixed to the upper surface of the wind box 41 described later. The movable grate moves back and forth along the conveying direction Z at a constant speed, thereby stirring and mixing the waste G on the movable grate and the fixed grate (on the stoker surface 30a) and conveying it downstream. In this embodiment, the waste G present on the grate 31 may be referred to as a "waste layer P". The waste layer P may be waste G that has been thrown into the treatment space V and is before or during incineration, or may be waste G that has been incinerated and turned into ash or the like. The garbage layer P is an example of a "powder layer."

(Wind box)
The wind box 41 is provided below the stoker 30 and supplies primary air for combustion to the inside of the furnace body 20 through the stoker 30. The wind box 41 is cylindrical and extends in the vertical direction, and guides the primary air from below to above. The primary air is an example of "combustion air".

FIG. 2 is a top view of the fire grate 31 and the wind box 41 provided below it.
2, the upper end opening of the wind box 41 is formed in a rectangular shape when viewed from above. A plurality of wind boxes 41 are arranged in the conveying direction Z. In this embodiment, for example, four wind boxes 41 are arranged in the conveying direction Z, and three wind boxes 41 are arranged in the furnace width direction X intersecting with the conveying direction Z when viewed from above, for a total of 12 wind boxes. In this embodiment, the plurality of wind boxes 41 are arranged in one-to-one correspondence with the plurality of fire grates 31.

(Discharge chute)
As shown in Fig. 1, the discharge chute 42 is a device that drops the waste layer P that has been burned and turned into ash to an ash pushing device located below the furnace body 20. The discharge chute 42 is provided at the end of the furnace body 20.

(Furnace)
The furnace 43 extends upward from the upper part of the furnace body 20. Exhaust gas generated by burning the waste G in the treatment space V is sent to the heat recovery boiler 3 through the furnace 43. The exhaust gas is an example of a "combustion gas." The furnace 43 is an example of a "flow path through which the combustion gas flows." The furnace 43 will be described in detail later.

(Blower mechanism)
The blower mechanism 50 supplies air (e.g., combustion air) to the inside of the furnace body 20. The blower mechanism 50 has, for example, a blower 51, a primary air line 52, an air preheater 53, a secondary air line 54, and a damper 55.

The blower 51 is a forced draft blower that pressurizes air (e.g., combustion air) into the inside of the furnace body 20. The blower 51 includes, for example, a first blower 51A and a second blower 51B. The first blower 51A pressurizes the combustion air (primary air) into the inside of the furnace body 20 (e.g., treatment space V) through the primary air line 52 and the wind box 41. The second blower 51B pressurizes the combustion air (secondary air) into the inside of the furnace 43 through the secondary air line 54. The secondary air is another example of "combustion air".

The primary air line 52 connects the first blower 51A and the wind boxes 41. The primary air line 52 supplies the primary air compressed from the first blower 51A to each of the multiple wind boxes 41.

One or more (e.g., multiple) primary air dampers 55A are provided in the middle of the primary air line 52. The primary air dampers 55A can change the supply state of the primary air supplied from the primary air line 52 to the wind box 41 corresponding to the primary air damper 55A depending on the opening degree of the primary air dampers 55A. The "supply state of the primary air flowing through the primary air line 52" means, for example, the distribution amount of the primary air to the multiple wind boxes 41 (i.e., the distribution amount of the primary air to the multiple sections C in the furnace body 20 described later) and/or the flow rate of the primary air supplied from each wind box 41 to the inside of the furnace body 20 (i.e., the flow rate of the primary air to each section C in the furnace body 20). In this embodiment, the primary air dampers 55A are provided individually corresponding to each wind box 41. As a result, the opening degree of the primary air dampers 55A corresponding to each of the total of 12 wind boxes 41 can be adjusted, and the amount of primary air supplied into the furnace body 20 can be adjusted for each wind box 41.

The air preheater 53 is a heat exchanger that preheats the primary air compressed from the first blower 51A. For example, the air preheater 53 is provided midway along the primary air line 52.

The secondary air line 54 connects the second blower 51B and the furnace 43. The secondary air supplied into the furnace 43 flows from above the stoker 30 toward the waste G and/or is used for burning exhaust gas. In this embodiment, the secondary air line 54 branches midway and has an upstream secondary air line 54A connected to the furnace wall 43a (front wall) arranged upstream in the conveying direction Z in the furnace 43, and a downstream secondary air line 54B connected to the furnace wall 43b (rear wall) arranged downstream in the conveying direction Z. The upstream secondary air line 54A supplies secondary air from an opening (not shown) formed in the furnace wall 43a toward the downstream side of the conveying direction Z into the furnace 43. The downstream secondary air line 54B supplies secondary air from an opening (not shown) formed in the furnace wall 43b toward the upstream side of the conveying direction Z into the furnace 43.

One or more (e.g., multiple) secondary air dampers 55B are provided in the middle of the secondary air line 54. The secondary air damper 55B can change the flow rate of the secondary air flowing through the secondary air line 54 and/or the supply state of the secondary air to the furnace 43 depending on the opening degree of the secondary air damper 55B. The "supply state of the secondary air flowing through the secondary air line 54" means, for example, the distribution amount of the secondary air to the multiple openings provided in the furnace walls 43a and 43b (i.e., the distribution amount of the secondary air to the multiple areas B in the furnace 43 described later) and/or the flow rate of the secondary air supplied to the inside of the furnace 43 from the multiple openings provided in the furnace walls 43a and 43b (i.e., the flow rate of the secondary air to each area B in the furnace 43). In this embodiment, the primary air damper 55A and the secondary air damper 55B are collectively referred to as "damper 55".

FIG. 3 is a top view of the portion of the furnace 43 to which secondary air is supplied from an upstream secondary air line 54A and a downstream secondary air line 54B.
1 and 3, in this embodiment, the secondary air damper 55B is provided in each of the upstream secondary air line 54A and the downstream secondary air line 54B. This makes it possible for the secondary air damper 55B to adjust the distribution amount of secondary air between the upstream side and the downstream side in the conveying direction Z within the furnace 43.

Furthermore, in this embodiment, the secondary air dampers 55B are provided separately on one side and the other side of the furnace width direction X in each of the upstream secondary air line 54A and the downstream secondary air line 54B. This allows the secondary air dampers 55B to adjust the amount of secondary air distributed on one side and the other side of the furnace width direction X.

3. Camera
Next, the camera 70 shown in FIG. 1 will be described.
The camera 70 is, for example, an infrared camera. The camera 70 photographs the inside of the furnace body 20 from the downstream side of the conveying direction Z in the incinerator 2. The camera 70 photographs the garbage G (e.g., the height state of the garbage layer P) accumulated on the fire grate 31 of the furnace body 20 from the end of the furnace body 20 through the luminous flame F. In addition to/instead of the above, the camera 70 may photograph the state of the outlet portion 11b of the hopper 11 (e.g., the state of the garbage G accumulated on the feeder 22) and/or the state of the wall of the furnace body 20 (e.g., the formation state of the deposit (clinker, etc.) formed on the wall of the furnace 43), etc.

In this embodiment, only one camera 70 is provided. The camera 70 photographs the inside of the furnace body 20, for example, through a transparent window (not shown) formed in the body wall 20w on the downstream side of the furnace body 20 in the conveying direction Z. The camera 70 photographs the inside of the furnace body 20 using still images at preset time intervals. The camera 70 may also continuously photograph the inside of the furnace body 20 using video. The camera 70 outputs the photographed image Im (for example, see FIG. 5) to the control device 100 using a wired communication means such as a communication cable, or a wireless communication means such as Bluetooth (registered trademark) or wireless LAN.

<4. Control Device>
Next, the control device (combustion facility system) 100 will be described.
The control device 100 comprehensively controls the combustion equipment 1. For example, the control device 100 controls the combustion of the waste G in the treatment space V of the furnace body 20.

Figure 4 is a block diagram showing the functional configuration of the control device 100. Figure 5 is a diagram showing an example of an image Im captured by the camera 70. Figure 6 is a diagram showing a depth map, which is an example of depth information Id generated by the depth information generating unit 120.

As shown in FIG. 4, the control device 100 includes, for example, an acquisition unit 110, a depth information generation unit 120, a processing unit 130, and a storage unit 140. The acquisition unit 110 acquires an image Im (for example, see FIG. 5) captured by one camera 70. The depth information generation unit 120 generates depth information Id (for example, see FIG. 6) based on the image Im. The processing unit 130 performs processing for performing combustion control or monitoring of the incinerator 2 based on the depth information Id (for example, a depth map). In the present disclosure, "based on the depth information Id" is not limited to the case where control or monitoring is performed directly based on the depth information Id, and may also include the case where control or monitoring is performed based on the three-dimensional measurement result Rs obtained from the depth information Id.
The memory unit 140 stores the trained model M.

In this embodiment, the processing unit 130 includes, for example, a three-dimensional measurement result derivation unit 131, an estimation unit 132, a control unit 133, and a monitoring unit 134. Note that the processing unit 130 may have only one of the control unit 133 and the monitoring unit 134. These components are described in detail below.

4.1 Acquisition unit
The acquisition unit 110 acquires an image Im, for example, as shown in FIG. 5, captured by one camera 70. The acquisition unit 110 acquires the data of the image Im output from the camera 70 via wired communication means or wireless communication means. In this embodiment, one camera 70 is an infrared camera. Therefore, the acquisition unit 110 acquires an infrared camera image of the garbage layer P in the incinerator 2 captured from the downstream side of the conveying direction Z as the image Im. This image Im is for identifying, for example, the three-dimensional shape (three-dimensional distribution) of the height of the garbage layer P in the incinerator 2. The image Im may also be for identifying other conditions in the incinerator 2 (for example, the condition of the attachment to the wall).

4.2 Depth information generation unit
The depth information generation unit 120 generates depth information Id of the subject as seen by the camera 70 by inputting the image Im acquired by the acquisition unit 110 into a trained model M that has been trained through deep learning.

The trained model M to which the image Im is input is read out from the storage unit 140. The trained model M is trained, for example, using teacher data including, as at least a part of the training data, images of subjects other than the incinerator 2 and correct answer data for the depth information Id related to the images. As images of subjects other than the incinerator 2, it is preferable to use a large number (e.g., several thousand or more) of images of subjects from a wide range of genres, such as landscapes and people. The trained model M is generated by training using, as at least a part of the training data, teacher data including images of subjects other than the incinerator 2 and correct answer data for the depth information Id related to each of the images.

Here, it is also possible to generate a trained model M using images taken inside the incinerator 2. However, to obtain an effective trained model M, it is necessary to prepare a large number of images taken inside the incinerator 2 and correct answer data for the depth information Id related to the images, which takes a great deal of time and effort. Therefore, as described above, by using a trained model M obtained using images taken of a subject other than the incinerator 2, it is possible to save time and effort.

As shown in FIG. 6, the image Im is input to the trained model M and the output depth information Id is, for example, a depth map indicating the distance from the camera 70 to each part of the subject. The depth map indicates the distance (depth) to each part of the surface layer of the garbage layer P when the garbage layer P in the incinerator 2 is viewed from the downstream side in the transport direction Z, using colors (including grayscale) set in multiple stages. The depth information generating unit 120 may further train the trained model M each time it acquires a new image Im and generates depth information Id.

4.3 3D measurement result derivation unit
The three-dimensional measurement result derivation unit 131 of the processing unit 130 performs coordinate system conversion on the depth information Id generated by the depth information generation unit 120 to derive the three-dimensional measurement result Rs inside the incinerator 2. The three-dimensional measurement result derivation unit 131 performs coordinate system conversion based on geometry for each coordinate ( _xw , _yw , _zw ) in the depth information Id, for example, using the following formula (1), to derive the coordinates ( _xs , _ys , _zs , _ws ) of each part of the surface layer of the subject (garbage layer P) inside the incinerator 2. Here, the coordinate system has the Z axis along the conveying direction Z, the X axis along the furnace width direction X, and the Y axis along the up-down direction.

Here, n: near-distance focal length, r: field of view range (right part), l: field of view range (left part), t: field of view range (upper part), b: field of view range (lower part), f: far-distance focal length, S _x to S _z : image enlargement/reduction magnification, T _x to T _z : image translation distance, R ₀₀ to R ₂₂ : image rotation amount, w _s : vertex coordinates on the image. Figure 7 is a diagram showing an example of a three-dimensional measurement result Rs in an incinerator obtained by the above formula (1).

4.4 Estimation Unit
The estimation unit 132 estimates at least one of the height distribution of the garbage layer P on the grate 31 of the incinerator 2 and the volumetric flow rate of the garbage layer P, based on the three-dimensional measurement result Rs derived by the three-dimensional measurement result derivation unit 131. The case where the height distribution of the garbage layer P is estimated will be described in detail below.

Figure 8 shows an example of the garbage layer height distribution Hd extracted from the three-dimensional measurement result Rs. The garbage layer P height distribution Hd on the grate 31 of the incinerator 2 as shown in Figure 8 can be obtained, for example, by extracting the garbage layer P height distribution Hd in the range K on the grate 31 in the XZ plane when the incinerator 2 is viewed from above from the three-dimensional measurement result Rs shown in Figure 7.

In this embodiment, the estimation unit 132 estimates the height distribution Hd of the garbage layer P on the grate 31 for each of the multiple sections C. In this embodiment, as shown in Figures 2 and 7, multiple sections C are set for each wind box 41. That is, 12 sections C1L, C1M, C1R, C2L, C2M, C2R, C3L, C3M, C3R, C4L, C3M, and C4R are set to match the wind boxes 41, which are arranged in a row of 12 in total, four in the conveying direction Z and three in the furnace width direction X. The estimation unit 132 estimates an estimated value of the height of the garbage layer P at the position of the section C corresponding to each wind box 41 based on the height distribution Hd of the garbage layer P on the grate 31 shown in Figure 7. Here, in each section C, for example, the height of the garbage layer P at multiple positions in the furnace width direction X may be estimated. In addition, in each section C, for example, the height of the garbage layer P at multiple positions in the conveying direction Z may be estimated.

Figure 9A is a diagram showing an example of estimated values of the height of the garbage layer P at multiple positions in the furnace width direction X in sections C3L, C3M, and C3R corresponding to the wind box 41 that is located third from the upstream side to the downstream side in the conveying direction Z. Figure 9B is a diagram showing an example of estimated values of the height of the garbage layer P at multiple positions in the furnace width direction X in sections C4L, C4M, and C4R corresponding to the wind box 41 that is located fourth from the upstream side to the downstream side in the conveying direction Z.

The estimation unit 132 may estimate the time change in the volumetric flow rate of the garbage G from the time change in the height distribution Hd of the garbage layer P on the grate 31, as shown in Figure 8.

4.5 Control Unit
The control unit 133 performs combustion control for the incinerator 2 based on the estimation result by the estimation unit 132. More specifically, the control unit 133 performs combustion control or monitoring for the incinerator 2 based on the estimation result by the estimation unit 132.

In this embodiment, the control unit 133 adjusts the flow rate and/or distribution amount of the primary air (combustion air) supplied into the furnace body 20 through the primary air line 52 and the wind box 41, and the flow rate and/or distribution amount of the secondary air (combustion air) supplied into the furnace 43 through the secondary air line 54, based on the estimation result by the estimation unit 132, for example, the height distribution Hd of the garbage layer P on the grate 31. Note that in this embodiment, the distribution of the primary air and the secondary air is adjusted by the control unit 133, but for example, only one of the distribution of the primary air and the distribution of the secondary air may be adjusted by the control unit 133.

(Control of primary air)
The control unit 133 controls the primary combustion air in accordance with the volumetric flow rate using an estimated value of the height of the garbage layer P or a time change in the height of the garbage layer P. In this embodiment, the control unit 133 controls the distribution amount of the primary air to each of the multiple sections C to suppress the amount of unburned fuel discharged from the furnace outlet.

For example, the control unit 133 determines the amount of primary air to be allocated to each section C based on an evaluation value calculated for each section C based on an estimated value of the height of the garbage layer P and a correction coefficient set for each section C. Here, the correction coefficient is used to correct an erroneous value that is introduced in the process of deriving the three-dimensional measurement result Rs from the depth information Id, for example.

More specifically, when an image of the inside of the incinerator 2 is taken from the downstream side of the conveying direction Z by one camera 70, if the top Pt (see FIG. 1) where the garbage layer P has the highest height is located, for example, in the combustion stage 20b, the height of the garbage layer P will be higher on the upstream side, which is farther away from the top Pt, as viewed from the camera 70. Therefore, the depth information Id and the three-dimensional measurement result Rs obtained from the image taken by the camera 70 will contain an erroneous value (error) in the height of the garbage layer P upstream of the top Pt. The control unit 133 corrects the erroneous value by a correction coefficient set based on the actual measured value of the distribution of the height of the garbage layer P obtained in advance, for example, during a test run.

To determine the amount of primary air to be allocated to each section C, the control unit 133 first calculates an evaluation value H of the height of the garbage layer P for each of the multiple sections C using the following formula (2).

Here, l is the furnace length (the length of section C in the conveying direction D), and h is the estimated height of the waste layer P at each position within section C.

Furthermore, based on the above formula (2), a score Score _N is calculated by the following formula (3).

Here, a is the above-mentioned correction coefficient, and A is the area of each section C. In this formula (3), the total value (integrated value) of the height of the garbage layer P in each section C is multiplied by the correction coefficient a, and the result is divided by the area of each section C. In other words, the score _N is the average value of the garbage layer P in each section C reflecting the correction coefficient set for each section C, and the greater the total amount of the garbage layer P in each section C, the larger the value becomes.

The control unit 133 obtains a determinant S as shown in the following formula (4) from the score _N of each section C calculated in this manner.

上式（４）において、ｗ_ｎは、区画Ｃごとに設定された一次空気の配分の優先度に関する重み付け係数（すなわち、炉本体２０の内部にどの区画Ｃから一次空気を優先的に供給するかを規定する重み付け係数）である。

In the above formula (4), _wn is a weighting coefficient related to the priority of distribution of primary air set for each section C (i.e., a weighting coefficient that specifies from which section C primary air is preferentially supplied to the inside of the furnace body 20).

The control unit 133 calculates the allocation Air Ratio of the primary air based on the above formula (4) by the following formula (5): where Sk=Score _N × _wn .

In this way, the control unit 133 determines the amount of primary air to be allocated to each section C based on the evaluation value calculated for each section C based on the estimated height of the garbage layer P and the weighting coefficient related to the priority of primary air allocation set for each section C.

Here, in the above formula (3), the correction coefficient a set for the sections C1R, C1M, and C1L corresponding to the drying stage 20a, where the error in the estimated value of the height of the garbage layer P is likely to be large, is preferably set so as to relatively reduce the amount of primary air allocated to the sections C2R, C2M, C2L, C3R, C3M, and C3L corresponding to the combustion stage 20b, where the estimated value of the height of the garbage layer P is large. In this embodiment, the correction coefficient a set for the section C corresponding to the drying stage 20a among the multiple sections C is set so as to reduce the height of the garbage layer P (in other words, to relatively reduce the amount of primary air allocated to the drying stage 20a compared to the correction coefficient a set for the section C corresponding to the combustion stage 20b among the multiple sections C).

Figure 10A shows the distribution of the estimated values of the height of the garbage layer P for each section C. Figure 10B shows the distribution of the estimated values of the height of the garbage layer P corrected by the correction coefficient a. As shown in Figure 10B, the heights of sections C1R, C1M, and C1L, which are prone to large errors in the estimated values of the height of the garbage layer P, are corrected by performing correction using the correction coefficient a.

The control unit 133 then ranks each section C using the following formula (6) and evaluates the priority for preferentially allocating primary air.

(Secondary Air Control)
The control unit 133 controls the amount of secondary air allocated. In this embodiment, the control unit 133 sets the amount of secondary air allocated based on the amount of primary air allocated as described above.

As shown in FIG. 3, the area within the furnace 43 to which secondary air is supplied from the upstream secondary air line 54A and the downstream secondary air line 54B is partitioned into a total of nine areas B (B1L, B1M, B1R, B2L, B2M, B2R, B3L, B3M, B3R) when viewed from above, for example, three in the conveying direction Z and three in the furnace width direction X.

To determine the amount of secondary air allocated to each region B, the control unit 133 first calculates an evaluation value H for each of the multiple regions B using the above formula (2). Then, the control unit 133 obtains a determinant S as shown in the above formula (4) from the score _N for each region B calculated using the above formula (3). Furthermore, the control unit 133 calculates the allocation Air Ratio of the secondary air using the above formula (5).

Here, when determining the allocation amount of secondary air, the weighting coefficient _wn in the above formula (4) may be the same as or different from the weighting coefficient _wn used when determining the allocation amount of primary air.

In this embodiment, the control unit 133 controls the amount of secondary air allocated in cooperation with the amount of primary air allocated. For example, if the most primary air is supplied from one or more sections C of the sections C1L, C1M, and C1R that are closer to the front areas B1L, B1M, and B1R located upstream in the conveying direction Z than the rear areas B3L, B3M, and B3R located downstream in the conveying direction Z among the multiple areas B, the control unit 133 sets a weighting coefficient so that more secondary air is supplied to the front areas B1L, B1M, and B1R than to the rear areas B3L, B3M, and B3R. Furthermore, if the largest amount of primary air is supplied from one or more of the sections C3L, C3M, and C3R that are closer to the rear areas B3L, B3M, and B3R than the front areas B1L, B1M, and B1R among the multiple areas B, the control unit 133 sets a weighting coefficient so that more secondary air is supplied to the rear areas B3L, B3M, and B3R than the front areas B1L, B1M, and B1R.

The control unit 133 may also set a weighting coefficient to determine the amount of secondary air allocated to the left regions B1L, B2L, B3L and the right regions B1R, B2R, B3R based on an estimated value of the height of the garbage layer P in one or more sections C (e.g., section C2R) that is closer to the right regions B1R, B2R, B3R than the left regions B1L, B2L, B3L among the multiple regions B, and an estimated value of the height of the garbage layer P in one or more sections C (e.g., section C2L) that is closer to the left regions B1L, B2L, B3L than the right regions B1R, B2R, B3R among the multiple regions B.

For example, if the estimated value of the height of the garbage layer P in one or more sections C (e.g., section C2R) that is closer to the right regions B1R, B2R, B3R than the left regions B1L, B2L, B3L among the multiple regions B is greater than the estimated value of the height of the garbage layer P in one or more (e.g., multiple, e.g., all) sections C that are closer to the left regions B1L, B2L, B3L than the right regions B1R, B2R, B3R among the multiple regions B (e.g., greater than a predetermined threshold value), the control unit 133 sets a weighting coefficient so that more secondary air is supplied to the right regions B1R, B2R, B3R than the left regions B1L, B2L, B3L.

On the other hand, if the estimated value of the height of the garbage layer P in one or more sections C (e.g., section C2L) that is closer to the left regions B1L, B2L, B3L than the right regions B1R, B2R, B3R among the multiple regions B is greater than the estimated value of the height of the garbage layer P in one or more (e.g., multiple, e.g., all) sections C that are closer to the right regions B1R, B2R, B3R than the left regions B1L, B2R, B3L among the multiple regions B (e.g., greater than a predetermined threshold value), the control unit 133 sets a weighting coefficient so that more secondary air is supplied to the left regions B1L, B2L, B3L than the right regions B1R, B2R, B3R.

In addition, when determining the flow rate or distribution amount of the secondary air, the control unit 133 may determine the flow rate or distribution amount of the secondary air based on a control value related to the flow rate or distribution amount of the primary air (e.g., a control value related to the opening degree of the primary air damper 55A) and/or an estimated value of the height of the garbage layer P in each section C, instead of using the weighting coefficient as described above.

In addition to or instead of controlling the primary and secondary air, the control unit 133 may perform other combustion controls (such as control of the supply amount of garbage G by controlling the movement speed or stroke of the feeder 22, control of the conveying speed of the garbage G by controlling the drive speed of the grate 31, control of the dryness state of the garbage G by controlling the air preheater 53, etc.) based on an estimated value of the height of the garbage layer P. In addition, the control unit 133 may perform these controls based on an estimated value of the volumetric flow rate of the garbage layer P instead of or in addition to the height of the garbage layer P.

4.6 Monitoring Section
Furthermore, the control unit 133 monitors the adhesion state of deposits such as clinker on the furnace walls, etc., based on the 3D measurement results by the 3D measurement result derivation unit 131. More specifically, the control unit 133 may monitor changes in the amount of deposits (e.g., adhesion area) and output a maintenance alert when the amount exceeds a preset threshold. Examples of maintenance alerts include output of an alert message, lighting of an alert lamp, output of an alert sound, etc.

5. Control Flow
Next, the flow of control in the control device 100 will be described.
FIG. 11 is a flowchart showing the flow of the information processing method.
During operation of the combustion equipment 1, the camera 70 captures images of the inside of the incinerator 2 at preset time intervals. As shown in Fig. 11, the acquisition unit 110 of the control device 100 acquires an image Im (for example, see Fig. 5) captured by one camera 70 (S101). The acquisition unit 110 acquires an infrared camera image of the waste layer P in the incinerator 2 captured from the downstream side in the conveying direction Z as the image Im.

Next, the depth information generating unit 120 inputs the image Im acquired by the acquiring unit 110 into the trained model M, thereby outputting depth information Id (e.g., see FIG. 6) corresponding to the image Im (S102). The output depth information Id is, for example, a depth map indicating the distance from the camera 70 to the subject.

Next, the 3D measurement result derivation unit 131 performs coordinate system transformation on the depth information Id generated by the depth information generation unit 120 to derive the 3D measurement result Rs (e.g., see Figure 7) of the inside of the incinerator 2 (S103).

Next, the estimation unit 132 estimates the height distribution Hd (e.g., see FIG. 8) of the garbage layer P on the grate 31 of the incinerator 2 based on the three-dimensional measurement results Rs derived by the three-dimensional measurement result derivation unit 131 (S104). The estimation unit 132 further estimates the height distribution Hd (e.g., see FIG. 9A and FIG. 9B) of the garbage layer P on the grate 31 for each of the multiple sections C.

Next, the control unit 133 performs combustion control for the incinerator 2 based on the estimation result by the estimation unit 132. The control unit 133 adjusts the distribution of primary air and secondary air based on the estimation result by the estimation unit 132, i.e., the height distribution Hd of the waste layer P on the grate 31.

In this embodiment, the control unit 133 controls the primary air according to the estimated value of the height of the garbage layer P. The control unit 133 controls the amount of primary air allocated to each of the multiple sections C to suppress the amount of unburned fuel discharged from the furnace outlet. For example, the control unit 133 determines the amount of primary air allocated to each section C based on the evaluation value calculated for each section C based on the estimated value of the height of the garbage layer P and the correction coefficient set for each section C (S105). The control unit 133 calculates the score Score _N for each of the multiple sections C using the above formulas (2) and (3). Furthermore, the control unit 133 calculates the allocation Air Ratio of the primary air by going through the above formulas (4) and (5). In this way, the control unit 133 determines the amount of primary air allocated to each section C.

Next, the control unit 133 sets the allocation amount of secondary air based on the allocation amount of primary air set as described above (S106). The control unit 133 calculates the score Score _N for each area B using the above formulas (2) and (3). Furthermore, the allocation amount of secondary air for each area B is controlled through the above formulas (4) and (5).

Then, the control unit 133 controls the opening degree of the primary air damper 55A and the secondary air damper 55B based on the determined distribution amount of primary air and secondary air.

After this, it is checked whether the operation of the combustion equipment 1 has been completed (S107). As a result, if the operation of the combustion equipment 1 has not been completed (S107: No), the process returns to step S101 and the above process is repeated. If the operation of the combustion equipment 1 has been completed (S107: Yes), the process ends.

<6. Effects>
As a comparative example, consider a configuration in which three-dimensional data is generated based on images acquired by two cameras arranged in a stereo format, and combustion control of the incinerator 2 is performed based on the generated three-dimensional data. In the configuration of this comparative example, the method using multiple cameras requires introduction costs. In addition, if any of the cameras 70 breaks down, it will malfunction. Three-dimensional measurement using the stereo method requires shooting and measuring the same subject from various angles, and multiple installation locations are required. As a result, when introducing it into an existing facility, costs such as securing and constructing window frames will be incurred, and dead space will increase. In addition, the stereo method requires that the positions of the cameras and sensors be known relative to each other when performing calculations based on geometry. Therefore, the positions of the cameras and sensors to be measured must be calibrated (or synchronized), and the accuracy will decrease due to the strong influence of recalibration and disturbances such as vibrations associated with reinstallation. In addition, convenience will decrease. Furthermore, the data capacity will increase because multiple images or videos taken by multiple cameras are acquired and stored.

On the other hand, in this embodiment, only one camera 70 is required, so introduction costs can be reduced. Furthermore, if an existing surveillance camera is used as the camera 70, there is no need to install an additional camera 70, which saves costs. Furthermore, since a single camera 70 functions, if multiple cameras 70 are provided, a redundant system can be assembled at the same cost as the multiple cameras required for a stereo system. Furthermore, since measurements are made with a single camera 70, there is no need to calibrate and synchronize the positions of the devices, and the effects of disturbances can be reduced. Furthermore, by using a single camera 70, there is no increase in image data volume compared to when multiple cameras are used.

According to the control device 100 and information processing method described above, depth information Id of the subject, that is, depth information Id of the garbage layer P, is obtained in an image Im taken by one camera 70, in which the garbage layer P in the incinerator 2 is viewed from the downstream side in the transport direction Z. The processing unit 130 performs combustion control or monitoring for the incinerator 2 based on the generated depth information Id. In this way, the combustion state of the garbage layer P in the incinerator 2 can be grasped based on the image Im taken by one camera 70, thereby reducing equipment costs.

The three-dimensional measurement result derivation unit 131 also performs coordinate system transformation on the depth information Id to derive three-dimensional measurement results Rs within the incinerator 2. This makes it possible to obtain the height distribution of the garbage layer P within the incinerator 2, etc. By performing combustion control or monitoring of the incinerator 2 based on such three-dimensional measurement results Rs, it is possible to appropriately control or monitor combustion of the incinerator 2 according to the state of the garbage layer P within the incinerator 2.

The estimation unit 132 also estimates at least one of the height distribution of the garbage layer P on the grate 31 of the incinerator 2 and the volumetric flow rate of the garbage layer P based on the three-dimensional measurement result Rs. This makes it possible to appropriately control or monitor combustion in the incinerator 2 based on the estimation result and in accordance with the height distribution of the garbage layer P in the incinerator 2 and the state of the volumetric flow rate of the garbage layer P.

The estimation unit 132 also calculates an evaluation value for each section C based on the estimated value of the height of the garbage layer P calculated for each of the multiple sections C set in the incinerator 2. The control unit 133 determines the amount of primary air to be allocated to each section C based on the calculated evaluation value and a correction coefficient set for each section C. This makes it possible to more appropriately determine the amount of primary air to be allocated to each of the multiple sections C set in the incinerator 2 according to the height of the garbage layer P.

In addition, the correction coefficient set for the section C corresponding to the drying stage 20a among the multiple sections C is set so that the amount of primary air allocated is relatively small compared to the correction coefficient set for the section C corresponding to the combustion stage 20b. This allows the primary air to be appropriately allocated to the combustion stage 20b, which requires more air, and the drying stage 20a, which requires less air than the combustion stage 20b.

The estimation unit 132 also calculates an evaluation value for each section C based on the estimated value of the height of the garbage layer P calculated for each of the multiple sections C set in the incinerator 2. The control unit 133 determines the amount of primary air to be allocated to each section C based on the calculated evaluation value and the weighting coefficient set for each section C. This makes it possible to more appropriately determine the amount of primary air to be allocated to each of the multiple sections C set in the incinerator 2 according to the height of the garbage layer P, based on the weighting coefficient of the primary air.

In addition, if the largest amount of primary air is supplied from the section C closest to the front regions B1L, B1M, and B1R among the multiple sections C, more secondary air is supplied to the front regions B1L, B1M, and B1R. In addition, if the largest amount of primary air is supplied from the section C closest to the rear regions B3L, B3M, and B3R among the multiple sections C, more secondary air is supplied to the rear regions B3L, B3M, and B3R. This allows more secondary air to be supplied to the regions to which more primary air is supplied.

In addition, the amount of secondary air allocated to the left regions B1L, B2L, B3L and the right regions B1R, B2R, B3R is determined based on an estimated value of the height of the garbage layer P in one or more sections C that are closer to the right regions B1R, B2R, B3R than the left regions B1L, B2L, B3L among the multiple sections C, and an estimated value of the height of the garbage layer P in one or more sections C that are closer to the left regions B1L, B2L, B3L than the right regions B1R, B2R, B3R among the multiple sections C. This allows the secondary air to be appropriately distributed in the furnace width direction X according to the distribution of the height of the garbage layer P in the left regions B1L, B2L, B3L and the right regions B1R, B2R, B3R. This allows the secondary air to be supplied more uniformly.

In this way, the control device 100 controls the distribution of primary air and secondary air, thereby making it possible to reduce NOx and CO generated during combustion. FIG. 12 shows the concentration distribution of carbon dioxide when the distribution control of primary air and secondary air as described above is not performed. FIG. 13 shows the concentration distribution of carbon dioxide when the distribution control of primary air and secondary air is performed by the control device 100 in the above embodiment. In FIGS. 12 and 13, the darker the color, the higher the concentration of carbon dioxide. As shown in FIG. 12, when the distribution control of primary air and secondary air is not performed, carbon dioxide passes through the secondary air as shown by the symbol S, whereas, as shown in FIG. 13, by appropriately controlling the distribution of primary air and secondary air, carbon dioxide is prevented from passing through the secondary air. This reduces the environmental load or reduces the consumption of denitrified ammonia, etc., which leads to a reduction in the running costs of the entire combustion equipment 1. Furthermore, if the air volume can be optimized, the excess supply of air can be suppressed and excess operation of the equipment can be avoided, which leads to a reduction in the running costs of the entire combustion equipment 1.

Figure 14 is a hardware configuration diagram showing the configuration of a computer 1100 according to this embodiment. The computer 1100 includes, for example, a processor 1110, a main memory 1120, a storage 1130, and an interface 1140.

Each of the functional units of the control device 100 described above is implemented in the computer 1100. The operation of each of the functional units described above is stored in the form of a program in the storage 1130. The processor 1110 reads the program from the storage 1130, expands it in the main memory 1120, and executes the above-mentioned processing in accordance with the program. The processor 1110 also secures storage areas in the main memory 1120 to be used by each of the functional units described above in accordance with the program.

The program may be for implementing part of the functions to be performed by the computer 1100. For example, the program may be for implementing the functions by combining with other programs already stored in the storage 1130 or by combining with other programs implemented in other devices. The computer 1100 may also include a custom LSI (Large Scale Integrated Circuit) such as a PLD (Programmable Logic Device) in addition to or instead of the above configuration. Examples of PLDs include PAL (Programmable Array Logic), GAL (Generic Array Logic), CPLD (Complex Programmable Logic Device), and FPGA (Field Programmable Gate Array). In this case, part or all of the functions implemented by the processor 1110 may be implemented by the integrated circuit.

Examples of storage 1130 include a magnetic disk, a magneto-optical disk, and a semiconductor memory. Storage 1130 may be an internal medium directly connected to the bus of computer 1100, or an external medium connected to computer 1100 via interface 1140 or a communication line. When this program is distributed to computer 1100 via a communication line, computer 1100 that receives the program may expand the program in main memory 1120 and execute the above-mentioned process. The program may be for realizing part of the above-mentioned functions. Furthermore, the program may be a so-called differential file (differential program) that realizes the above-mentioned functions in combination with other programs already stored in storage 1130.

<Additional Notes>
The combustion equipment system and the information processing method described in the embodiment can be understood, for example, as follows.

(1) The first aspect of the combustion equipment system (e.g., the control device 100) includes an acquisition unit 110 that acquires an image Im captured by a single camera 70 that captures the inside of the incinerator 2 from the downstream side of the transport direction Z of the powder layer (e.g., the garbage layer P) in the incinerator 2, a depth information generation unit 120 that generates depth information Id as seen from the camera 70 by inputting the image Im captured by the single camera 70 acquired by the acquisition unit 110 into a trained model M, and a processing unit 130 that performs combustion control or monitoring of the incinerator 2 based on the depth information Id generated by the depth information generation unit 120.

According to this configuration, the acquisition unit 110 acquires an image Im captured by one camera 70. The acquired image Im is an image of the inside of the incinerator 2 captured from the downstream side of the transport direction Z of the powder layer in the incinerator 2. The depth information generation unit 120 generates depth information Id as seen from the camera 70 by inputting the acquired image Im into the trained model M. This provides depth information Id of the subject in the image Im captured by one camera 70, that is, depth information Id of the powder layer, of the powder layer in the incinerator 2 captured from the downstream side of the transport direction Z. The processing unit 130 can perform combustion control or monitoring of the incinerator 2 based on the generated depth information Id. In this way, the combustion state of the powder layer in the incinerator 2 can be grasped based on the image Im captured by one camera 70, thereby reducing equipment costs.

(2) The second aspect of the combustion equipment system is the combustion equipment system of (1), in which the processing unit 130 includes a three-dimensional measurement result derivation unit 131 that derives three-dimensional measurement results Rs within the incinerator 2 by performing coordinate system transformation on the depth information Id, and performs combustion control or monitoring for the incinerator 2 based on the three-dimensional measurement results Rs. With this configuration, the three-dimensional measurement result derivation unit 131 derives three-dimensional measurement results Rs within the incinerator 2 by performing coordinate system transformation on the depth information Id. This makes it possible to obtain the height distribution of the powder layer within the incinerator 2, etc. By performing combustion control or monitoring for the incinerator 2 based on such three-dimensional measurement results Rs, it is possible to appropriately perform combustion control or monitoring for the incinerator 2 according to the state of the powder layer within the incinerator 2.

(3) The third aspect of the combustion equipment system is the combustion equipment system of (2), in which the processing unit 130 includes an estimation unit 132 that estimates at least one of the height distribution of the powder layer on the grate 31 of the incinerator 2 and the volumetric flow rate of the powder layer based on the three-dimensional measurement result Rs, and a control unit 133 that performs combustion control for the incinerator 2 based on the estimation result by the estimation unit 132. According to this configuration, the estimation unit 132 estimates at least one of the height distribution of the powder layer on the grate 31 of the incinerator 2 and the volumetric flow rate of the powder layer based on the three-dimensional measurement result Rs. As a result, it is possible to appropriately control or monitor combustion for the incinerator 2 according to the height distribution of the powder layer in the incinerator 2 and the state of the volumetric flow rate of the powder layer based on the estimation result.

(4) A fourth aspect of the combustion equipment system is the combustion equipment system of (3), in which the estimation unit 132 calculates an estimated value of the powder layer height for each of the multiple sections C set in the incinerator 2 based on the three-dimensional measurement result Rs, and the control unit 133 determines the amount of primary air to be allocated to each section C based on the evaluation value calculated for each section C based on the estimated value of the powder layer height and a correction coefficient set for each section C for correcting an error value introduced in the process of deriving the three-dimensional measurement result Rs from the depth information Id. According to this configuration, the estimation unit 132 calculates an evaluation value for each section C based on the estimated value of the powder layer height calculated for each of the multiple sections C set in the incinerator 2. The control unit 133 determines the amount of primary air to be allocated to each section C based on the calculated evaluation value and the correction coefficient set for each section C. The correction coefficient corrects an error value introduced in the process of deriving the three-dimensional measurement result Rs from the depth information Id. This makes it possible to more appropriately determine the amount of primary air allocated to each of the multiple sections C set up within the incinerator 2 according to the height of the powder layer.

(5) A fifth aspect of the combustion equipment system is the combustion equipment system of (3) or (4), in which the estimation unit 132 calculates an estimated value of the powder layer height for each of the multiple sections C set in the incinerator 2 based on the three-dimensional measurement result Rs, and the control unit 133 determines the amount of primary air to be allocated to each section C based on an evaluation value calculated for each section C based on the estimated value of the powder layer height and a weighting coefficient related to the priority of the primary air allocation set for each section C. According to this configuration, the estimation unit 132 calculates an evaluation value for each section C based on the estimated value of the powder layer height calculated for each of the multiple sections C set in the incinerator 2. The control unit 133 determines the amount of primary air to be allocated to each section C based on the calculated evaluation value and the weighting coefficient set for each section C. The weighting coefficient relates to the priority of the primary air allocation set for each section C. This allows the amount of primary air allocated to each of the multiple sections C set up within the incinerator 2 according to the height of the powder layer to be more appropriately determined according to the weighting coefficient of the primary air.

(6) A sixth aspect of the combustion equipment system is any one of the combustion equipment systems (3) to (5), in which the incinerator 2 includes a furnace 43 arranged above the grate 31 and into which post-combustion gas flows, and when viewed from above, the furnace 43 includes left regions B1L, B2L, and B3L and right regions B1R, B2R, and B3R that are aligned in a direction intersecting the conveying direction Z, and the estimation unit 132 estimates the height of the powder bed based on the three-dimensional measurement result Rs for each of a plurality of sections C set in the incinerator 2. The control unit 133 calculates an estimated value of the powder bed height in one or more sections C that are closer to the right regions B1R, B2R, B3R than the left regions B1L, B2L, B3L among the multiple sections C, and determines the distribution amount of secondary air to the left regions B1L, B2L, B3L and the right regions B1R, B2R, B3R based on the estimated value of the powder bed height in one or more sections C that are closer to the left regions B1L, B2L, B3L than the right regions B1R, B2R, B3R among the multiple sections C. With this configuration, the secondary air can be appropriately distributed in the direction intersecting the conveying direction Z according to the distribution of the powder bed height in the left regions B1L, B2L, B3L and the right regions B1R, B2R, B3R. This allows the secondary air to be supplied more uniformly.

(7) The seventh aspect of the combustion equipment system is any one of the combustion equipment systems (4) to (6), in which the incinerator 2 includes a furnace 43 arranged above the grate 31 and into which the post-combustion gas flows, and when viewed from above, the furnace 43 includes front regions B1L, B1M, B1R and rear regions B3L, B3M, B3R arranged downstream in the conveying direction Z compared to the front regions B1L, B1M, B1R, and the control unit 133 increases the amount of secondary air supplied to the front regions B1L, B1M, B1R compared to the rear regions B3L, B3M, B3R when the largest amount of primary air is supplied from one or more sections C that are closer to the front regions B1L, B1M, B1R than the rear regions B3L, B3M, B3R among the multiple sections C. With this configuration, it is possible to supply more secondary air to the region to which more primary air is supplied.

(8) The information processing method of the eighth aspect includes one or more computers acquiring an image Im taken by one camera 70 that photographs the inside of the incinerator 2 from the downstream side of the transport direction Z of the material to be incinerated in the incinerator 2, inputting the acquired image Im taken by one camera 70 into the learned model M to generate depth information Id as seen from the camera 70, and performing combustion control or monitoring of the incinerator 2 based on the generated depth information Id. According to this configuration, the depth information Id of the subject, that is, the depth information Id of the powder layer in the incinerator 2, is acquired in the image Im taken by one camera 70 and viewed from the downstream side of the transport direction Z. In this way, it is possible to perform combustion control or monitoring of the incinerator 2 based on the generated depth information Id. In this way, the combustion state of the powder layer in the incinerator 2 can be grasped based on the image Im taken by one camera 70, thereby reducing equipment costs.

1 ... Combustion equipment 2 ... Incinerator 20a ... Drying stage 20b ... Combustion stage 20c ... Post-combustion stage 31 ... Fire grate 43 ... Furnace 70 ... Camera 100 ... Control device (combustion equipment system)
110: Acquisition unit 120: Depth information generation unit 130: Processing unit 131: Three-dimensional measurement result derivation unit 132: Estimation unit 133: Control unit 1100: Computer B: Area C: Section Id: Depth information Im: Image P: Garbage layer (powder layer)
Rs...3D measurement results

Claims (6)

An acquisition unit that acquires an image taken by a single camera that photographs the inside of the incinerator from the downstream side of the powder bed transport direction in the incinerator;
A depth information generation unit that generates depth information seen from the camera by inputting the image captured by the one camera acquired by the acquisition unit into a trained model;
a processing unit that corrects the height of the garbage layer that exists in a direction away from the camera from the highest top of the garbage layer in the depth information generated by the depth information generating unit using a correction coefficient set based on an actual measurement value of the distribution of the height of the garbage layer that has been prepared in advance, and performs combustion control or monitoring for the incinerator based on the corrected depth information;
A system for combustion equipment equipped with The processing unit includes a three-dimensional measurement result derivation unit that derives a three-dimensional measurement result inside the incinerator by performing coordinate system transformation on the depth information, and performs combustion control or monitoring for the incinerator based on the three-dimensional measurement result.
A system for a combustion facility according to claim 1 . The processing unit includes:
An estimation unit that estimates at least one of the height distribution of the powder bed on the grate of the incinerator and the volumetric flow rate of the powder bed based on the three-dimensional measurement result;
A control unit that performs combustion control for the incinerator based on the estimation result by the estimation unit;
including,
A system for a combustion facility according to claim 2 . The estimation unit calculates an estimated value of the height of the powder layer for each of a plurality of sections set in the incinerator based on the three-dimensional measurement result,
the control unit determines an allocation amount of primary air to be allocated to each of the sections based on an evaluation value calculated for each of the sections based on the estimated value of the powder bed height and a correction coefficient set for each of the sections for correcting an error introduced in a process of deriving the three-dimensional measurement result from the depth information.
A system for a combustion facility according to claim 3 . The estimation unit calculates an estimated value of the height of the powder layer for each of a plurality of sections set in the incinerator based on the three-dimensional measurement result,
the control unit determines an amount of primary air to be allocated to each of the sections based on an evaluation value calculated for each of the sections based on the estimated value of the powder bed height and a weighting coefficient related to a priority of allocation of primary air set for each of the sections.
A system for a combustion facility according to claim 3 . One or more computers
An image taken by one camera photographing the inside of the incinerator from the downstream side of the transport direction of the material to be incinerated in the incinerator is acquired,
By inputting the image captured by the one camera into a trained model, depth information as seen from the camera is generated;
The height of the garbage layer that exists in a direction away from the camera from the highest top of the garbage layer in the generated depth information is corrected using a correction coefficient set based on an actual measurement value of the distribution of the height of the garbage layer that has been prepared in advance, and combustion control or monitoring of the incinerator is performed based on the corrected depth information.
An information processing method comprising the steps of:

Images