Computer program, information processing method and information processing apparatus

Abstract

To provide a computer program, an information processing method and an information processing apparatus which are expected to help users understand information about the irregularities of a combustion chamber inner face.SOLUTION: A computer program according to this embodiment causes a computer to execute the steps of: acquiring first shape data of a combustion chamber inner face at a first point of time based on the measurement of a distance sensor; acquiring second shape data of the combustion chamber inner face at a second point of time after the first point of time based on the measurement of the distance sensor; and outputting information about the irregularities of the combustion chamber inner face based on a difference between the acquired first shape data and second shape data.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present disclosure relates to a computer program, an information processing method, and an information processing device that handle information regarding unevenness on the inner surface of a combustion chamber. [Background technology]

[0002] Patent document 1 proposes an inspection device for a stoker furnace, which includes a plurality of vibration-damping wires whose upper ends are connected to a fixed plate fixed to the underside of the furnace ceiling in the furnace space, a lifting stand whose vibration is damped by the plurality of vibration-damping wires, a measuring instrument arranged on the lifting stand, and a lifting device for raising and lowering the lifting stand. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2017-116237 A Summary of the Invention [Problem to be solved by the invention]

[0004] Molten combustion ash, known as clinker, adheres to the inner surfaces (walls, ceiling, bottom, etc.) of the combustion chamber of an incinerator and accumulates as the combustion continues. Such deposits grow large inside the combustion chamber and can become a factor that impedes operation, so regular maintenance is required. If regular maintenance is not performed and a large amount of clinker has adhered to the inner surface of the combustion chamber, combustion may need to be stopped in an emergency to remove the clinker.

[0005] In addition, the inside of the combustion furnace is made of firebricks in the high temperature zone. As these firebricks protrude and fall off during operation, periodic maintenance is required to check the amount of protrusion and, if necessary, to replace them.

[0006] The present disclosure has been made in consideration of the above circumstances, and its purpose is to provide a computer program, an information processing method, and an information processing device that can be expected to enable a user to grasp information regarding the unevenness of the inner surface of a combustion chamber, such as the amount of deposits adhering to the inner surface of the combustion chamber or the amount of protruding bricks. [Means for solving the problem]

[0007] A computer program according to one embodiment causes a computer to execute a process of acquiring first shape data of the combustion chamber inner surface at a first point in time based on measurement by a distance measurement sensor, acquiring second shape data of the combustion chamber inner surface at a second point in time after the first point in time based on measurement by the distance measurement sensor, and outputting information regarding unevenness of the combustion chamber inner surface based on a difference between the acquired first shape data and the acquired second shape data. Effect of the Invention

[0008] According to the present disclosure, it is expected that a user can grasp information regarding unevenness of the inner surface of a combustion chamber, such as the amount of deposits adhering to the inner surface of the combustion chamber or the amount of protruding bricks. [Brief description of the drawings]

[0009] [Figure 1] 1 is a schematic diagram for explaining an overview of an information processing system according to an embodiment of the present invention; [Diagram 2] 1 is a block diagram showing an example of a configuration of an information processing device according to an embodiment of the present invention; [Diagram 3] 2 is a block diagram showing a configuration of a terminal device according to the present embodiment; FIG. [Figure 4] FIG. 2 is a schematic diagram showing a display example of a three-dimensional image. [Diagram 5] 5 is a flowchart showing an example of a procedure of an adhesion amount calculation process performed by the information processing device according to the present embodiment. [Figure 6] 11 is a schematic diagram for explaining an example of display of information regarding the amount of protrusion. FIG. [Figure 7]11 is a schematic diagram for explaining an example of display of information regarding the amount of protrusion. FIG. [Figure 8] 10 is a flowchart showing an example of a procedure of a protrusion amount calculation process performed by the terminal device according to the present embodiment. [Figure 9] 10 is a flowchart showing an example of a procedure of a protrusion amount calculation process performed by the information processing device according to the present embodiment. [Figure 10] 10 is a flowchart illustrating another example of the procedure of the protrusion amount calculation process performed by the information processing device according to the present embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] Specific examples of information processing systems according to embodiments of the present disclosure will be described below with reference to the drawings. Note that the present disclosure is not limited to these examples, but is defined by the claims, and is intended to include all modifications within the meaning and scope of the claims.

[0011] <System Overview> FIG. 1 is a schematic diagram for explaining the outline of an information processing system according to this embodiment. The information processing system according to this embodiment is a system that provides a user with information on the unevenness of the combustion chamber surface of an incinerator such as a stoker type incinerator. As an example, a system that provides a user with information on the amount of adhesion and protrusion of adhesion material such as adhering clinker, among the information on the unevenness of the combustion chamber surface, will be described. The information processing system according to this embodiment can be used by a user such as an incinerator manager or a person in charge of cleaning the combustion chamber. It should be noted that, among the information on the unevenness of the combustion chamber surface, information on the protrusion and falling off of firebricks can also be provided to a user in the same manner as the following system.

[0012] A user measures the three-dimensional shape of the inner surface of a combustion chamber using a terminal device 3 such as a smartphone or tablet terminal device equipped with a distance measuring sensor such as LiDAR (Light Detection And Ranging). The three-dimensional shape data of the inner surface of the combustion chamber obtained by the measurement of the terminal device 3 is transmitted from the terminal device 3 to an information processing device 1 such as a server device. In this embodiment, the user measures the inner surface of the combustion chamber using the terminal device 3 at least twice, before and after cleaning of the combustion chamber, and transmits the three-dimensional shape data of the measurement result to the information processing device. In addition, the measurement of the three-dimensional shape data of the inner surface of the combustion chamber may be performed, for example, before the operation of the combustion chamber (immediately after completion, etc.), and the three-dimensional shape data obtained by the measurement at such timing may be stored in the information processing device 1 as initial data.

[0013] The three-dimensional shape data transmitted from the terminal device 3 to the information processing device 1 is calculated by calculating the coordinates (X, Y, Z) of the object in the three-dimensional space based on the measurement result of the distance from the terminal device 3 to the object measured by a distance measuring sensor, for example. In the present embodiment, the terminal device 3 performs measurement by the distance measuring sensor and simultaneously takes an image by a camera, and for each pixel of the image of the combustion chamber inner surface obtained by the camera shooting, generates three-dimensional shape data by combining information on the color (R, G, B) of the object captured in this pixel and the three-dimensional coordinates (X, Y, Z) of the object, and transmits the data to the information processing device 1. However, the terminal device 3 may transmit information on the distance (or depth, etc.) measured by the distance measuring sensor as the three-dimensional shape data, instead of the three-dimensional coordinates (X, Y, Z). Furthermore, the three-dimensional shape data may not include information on the color (R, G, B).

[0014] The information processing device 1 according to this embodiment receives three-dimensional shape data of the inner surface of the combustion chamber from the terminal device 3, and stores the received data in, for example, a database. When two sets of three-dimensional shape data are obtained by measuring the inside of the combustion chamber at two points in time, before and after cleaning, the information processing device 1 calculates the amount of adhesion of the deposits that were attached to the inner surface of the combustion chamber (the amount of adhesion removed by cleaning) by calculating the difference between these two sets of three-dimensional shape data. The information processing device 1 transmits information related to the calculated amount of adhesion to the terminal device 3, and provides the information to the user by displaying the information on the terminal device 3.

[0015] The terminal device 3 can display various information related to the deposits on the combustion chamber inner surface based on the information obtained from the information processing device 1 in response to the transmission of the three-dimensional shape data. In this embodiment, the terminal device 3 provides information to the user by, for example, displaying a three-dimensional image that reproduces the combustion chamber inner surface based on the three-dimensional shape data, and superimposing and displaying the numerical values ​​of the amount of deposit for each appropriate region on the combustion chamber inner surface, or by superimposing and displaying a heat map showing the distribution of the amount of deposit.

[0016] Furthermore, in the information processing system according to this embodiment, the user may use the terminal device 3 to measure the three-dimensional shape of the combustion chamber inner surface at any time, regardless of the time of cleaning. In this case, the information processing device 1, which has received the three-dimensional shape data from the terminal device 3, generates information on the amount of protrusion of the combustion chamber inner surface based on one piece of three-dimensional shape data obtained by one measurement, and transmits the information to the terminal device 3. The terminal device 3 can display various information on the amount of protrusion of the combustion chamber inner surface based on the information from the information processing device 1.

[0017] In this embodiment, the terminal device 3 displays an image of the combustion chamber inner surface obtained during measurement, for example, receives an operation for specifying a range on the combustion chamber inner surface from the user, and transmits information related to the received range to the information processing device 1. The information processing device 1 extracts the amount of protrusion of the range specified by the user from the three-dimensional shape data based on the information received from the terminal device 3, generates a graph or the like showing the amount of protrusion of this range, and transmits it to the terminal device 3. The terminal device 3 can provide the user with information related to the amount of protrusion for the specified range by displaying the graph or the like received from the information processing device 1.

[0018] Furthermore, the information processing device 1 may generate a contour map (isoline map) in which points on the combustion chamber inner surface with equal protrusion amounts are connected by lines based on, for example, the three-dimensional shape data received from the terminal device 3, and transmit the generated contour map to the terminal device 3. The terminal device 3 can display the contour map from the information processing device 1 by superimposing it on the image of the combustion chamber inner surface. Furthermore, the information processing device 1 detects points where the protrusion amount of the combustion chamber inner surface exceeds a predetermined threshold value based on the three-dimensional shape data received from the terminal device 3, and transmits information regarding the detection result to the terminal device 3. Based on the information regarding the detection result received from the information processing device 1, the terminal device 3 can notify the user by, for example, highlighting the points where the protrusion amount exceeds the threshold value in the image of the combustion chamber inner surface.

[0019] In this embodiment, the user performs the measurement using the terminal device 3, and the information such as the adhesion amount and protrusion amount calculated by the information processing device 1 is displayed and provided to the user by the terminal device 3, but the information may be provided to the user by the information processing device 1 instead of the terminal device 3. In this case, the user can use the terminal device 3 as a measuring device and perform tasks such as checking and verifying the information such as the adhesion amount and protrusion amount based on the measurement results on the information processing device 1.

[0020] Furthermore, for example, processing such as calculation of the adhesion amount and protrusion amount based on the measurement results may be performed by the terminal device 3 rather than the information processing device 1. The terminal device 3 may perform all information processing such as measurement, calculation, and display related to the calculation of the adhesion amount and protrusion amount by itself, in which case the information processing device 1 need not be included in the information processing system.

[0021] <Device configuration> 2 is a block diagram showing an example of the configuration of an information processing device 1 according to this embodiment. The information processing device 1 according to this embodiment is configured to include a processing unit 11, a memory unit (storage) 12, and a communication unit (transceiver) 13. Note that, in this embodiment, the description will be given assuming that processing is performed by one information processing device 1, but processing may be distributed among a plurality of information processing devices.

[0022] The processing unit 11 is configured using an arithmetic processing device such as a CPU (Central Processing Unit), an MPU (Micro-Processing Unit), a GPU (Graphics Processing Unit) or a quantum processor, and a storage device such as a ROM (Read Only Memory) and a RAM (Random Access Memory). The processing unit 11 reads out and executes a program 12a stored in the storage unit 12, thereby performing various processes such as a process of calculating the amount of adhesion of an adhesion on the inner surface of the combustion chamber based on three-dimensional shape data obtained by measurement by the terminal device 3, and a process of calculating the amount of protrusion of the inner surface of the combustion chamber.

[0023] The storage unit 12 is configured using a large-capacity storage device such as a hard disk. The storage unit 12 stores various programs executed by the processing unit 11 and various data required for the processing of the processing unit 11. In this embodiment, the storage unit 12 stores the program 12a executed by the processing unit 11. The storage unit 12 also includes a shape data storage unit that stores three-dimensional shape data acquired from the terminal device 3.

[0024] In this embodiment, the program (computer program, program product) 12a is provided in a form recorded on a recording medium 99 such as a memory card or an optical disk, and the information processing device 1 reads out the program 12a from the recording medium 99 and stores it in the storage unit 12. However, the program 12a may be written in the storage unit 12, for example, during the manufacturing stage of the information processing device 1. Also, for example, the program 12a may be distributed by another remote server device or the like and acquired by the information processing device 1 through communication. For example, the program 12a may be read from the recording medium 99 by a writing device and written into the storage unit 12 of the information processing device 1. The program 12a may be provided in a form distributed via a network, or may be provided in a form recorded on the recording medium 99.

[0025] The shape data storage unit 12b stores the three-dimensional shape data of the combustion chamber inner surface acquired from the terminal device 3 in association with various information, such as the measurement date and time, the identification information of the person who measured, and flag information indicating whether it is before or after cleaning. The shape data storage unit 12b can also store three-dimensional shape data measured before the operation of the combustion chamber as initial data. The information processing device 1 can read two three-dimensional shape data, one before cleaning and one after cleaning, from the shape data storage unit 12b based on this information, and calculate the amount of adhesion based on the difference between the two three-dimensional shape data.

[0026] The communication unit 13 communicates with various devices via a network N including a mobile phone communication network, a wireless LAN (Local Area Network), the Internet, etc. In this embodiment, the communication unit 13 communicates with one or more terminal devices 3 via the network N. The communication unit 13 transmits data provided from the processing unit 11 to other devices, and provides data received from other devices to the processing unit 11.

[0027] The storage unit 12 may be an external storage device connected to the information processing device 1. The information processing device 1 may be a multi-computer including a plurality of computers, or may be a virtual machine virtually constructed by software. The information processing device 1 is not limited to the above configuration, and may include, for example, a reading unit that reads information stored in a portable storage medium, an input unit that accepts operation input, or a display unit that displays an image.

[0028] In the information processing device 1 according to this embodiment, the processing unit 11 reads out and executes the program 12a stored in the storage unit 12, whereby a shape data acquisition unit 11a, an adhesion amount calculation unit 11b, a protrusion amount calculation unit 11c, an information transmission processing unit 11d, and the like are realized as software functional units in the processing unit 11. Note that in this drawing, functional units related to the calculation of the adhesion amount and protrusion amount on the inner surface of the combustion chamber are shown as the functional units of the processing unit 11, and functional units related to other processes are not shown.

[0029] The shape data acquisition unit 11a performs a process of acquiring three-dimensional shape data of the combustion chamber inner surface measured by the terminal device 3 by communicating with the terminal device 3 used by the user through the communication unit 13. The shape data acquisition unit 11a acquires three-dimensional shape data by receiving the three-dimensional shape data transmitted by the terminal device 3 through the communication unit 13, and stores the acquired three-dimensional shape data in the shape data storage unit 12b. At this time, the shape data acquisition unit 11a may acquire information such as the measurement date and time, identification information of the person who performed the measurement, and flag information indicating whether the measurement is before or after cleaning, together with the three-dimensional shape data from the terminal device 3, and store this information and the three-dimensional shape data in the shape data storage unit 12b in association with each other. In this embodiment, the three-dimensional shape data acquired by the shape data acquisition unit 11a includes color (R, G, B) data of each pixel based on an image of the combustion chamber inner surface photographed by a camera, and three-dimensional coordinate (X, Y, Z) data measured by a distance measurement sensor.

[0030] The adhesion amount calculation unit 11b performs a process of calculating the amount of adhesion such as clinker adhering to the inner surface of the combustion chamber based on the three-dimensional shape data acquired by the shape data acquisition unit 11a. In this embodiment, the amount of adhesion calculated by the adhesion amount calculation unit 11b is the amount of adhesion removed by cleaning or the like of the inner surface of the combustion chamber, and is the amount of the cleaned adhesion that was attached. The adhesion amount calculated by the adhesion amount calculation unit 11b may be, for example, the amount (total amount) of adhesion adhering to the entire combustion chamber, or may be, for example, an individual adhesion amount at each point on the inner surface of the combustion chamber. The adhesion amount calculation unit 11b may calculate the adhesion amount as, for example, a volume, or may calculate the adhesion amount as, for example, a thickness (height, depth) of the adhesion at each point on the inner surface of the combustion chamber.

[0031] The adhesion amount calculation unit 11b reads out the three-dimensional shape data measured before cleaning the combustion chamber inner surface and the three-dimensional shape data measured after cleaning, which are stored in the shape data storage unit 12b, and calculates the difference between these two three-dimensional shape data. The adhesion amount calculation unit 11b can calculate the total amount of adhesions that have adhered to the combustion chamber inner surface, for example, by calculating the volume of the three-dimensional shape calculated as the difference. In addition, the adhesion amount calculation unit 11b can calculate the difference between before and after cleaning as the difference in thickness of adhesions for each point on the combustion chamber inner surface (each pixel of the captured image included in the three-dimensional shape data), for example, and can calculate the amount of adhesion of adhesions at each point by calculating the difference in volume at each point based on this thickness difference and the area of ​​each point.

[0032] The adhesion amount calculation unit 11b provides information on the calculated adhesion amount, i.e., the total amount of adhesion in the entire combustion chamber and / or information on the adhesion amount at each point on the inner surface of the combustion chamber, to the information transmission processing unit 11d. At this time, the adhesion amount calculation unit 11b may generate an image in which, for example, numerical information on the adhesion amount at each point on the inner surface of the combustion chamber or a heat map color-coded according to the adhesion amount is superimposed on a three-dimensional image in which the inside of the combustion chamber is reproduced in a three-dimensional virtual space based on the three-dimensional shape data after cleaning, and provide the generated image to the information transmission processing unit 11d as the calculation result of the adhesion amount.

[0033] The protrusion amount calculation unit 11c performs a process of calculating the protrusion amount of the deposit at each point on the combustion chamber inner surface based on the three-dimensional shape data acquired by the shape data acquisition unit 11a. The calculation of the protrusion amount by the protrusion amount calculation unit 11c is performed based on one piece of three-dimensional shape data, such as three-dimensional shape data of the combustion chamber inner surface measured before cleaning. In this embodiment, the terminal device 3 displays an image of the combustion chamber inner surface based on the measurement result of the three-dimensional shape, and accepts an operation of specifying a range for this image, and information about the range specified by the user is transmitted from the terminal device 3 to the information processing device 1. The protrusion amount calculation unit 11c calculates the height of the unevenness of the combustion chamber inner surface (i.e., the protrusion amount) from the three-dimensional shape data for the specified range, generates a graph showing the protrusion amount or a cross-sectional view showing the shape of the unevenness, and provides the generated image to the information transmission processing unit 11d as a calculation result of the protrusion amount.

[0034] In this embodiment, the amount of protrusion of the combustion chamber inner surface corresponds to the thickness of the deposit at each point on the combustion chamber inner surface, but the amount of protrusion calculated by the protrusion amount calculation unit 11c may be a relative value or an absolute value. When calculating a relative value, the protrusion amount calculation unit 11c can calculate the amount of protrusion of each point relative to a reference point, for example, based on a point with the smallest amount of protrusion. When calculating an absolute value, the protrusion amount calculation unit 11c can calculate the amount of protrusion based on the difference between, for example, initial data of the three-dimensional shape data measured before the operation of the combustion chamber and the three-dimensional shape data obtained by the current measurement.

[0035] The protrusion amount calculation unit 11c may also calculate the protrusion amount of each point based on the three-dimensional shape data, generate a contour map by connecting points with equal protrusion amounts on the image of the combustion chamber inner surface with lines, and provide the generated contour map to the information transmission processing unit 11d as the calculation result of the protrusion amount. The generation of the contour map may be performed, for example, within a range specified by the user, or may be performed over the entire area of ​​the combustion chamber inner surface where the three-dimensional shape data exists, regardless of whether or not the user has specified it.

[0036] The protrusion amount calculation unit 11c also calculates the protrusion amount over the entire area of ​​the combustion chamber inner surface where the three-dimensional shape data exists, and compares the calculated protrusion amount at each point with a predetermined threshold value. In this way, the protrusion amount calculation unit 11c may detect points where the protrusion amount exceeds the threshold value, and provide information about the points where the protrusion amount exceeds the threshold value to the information transmission processing unit 11d as a calculation result of the protrusion amount.

[0037] The information transmission processing unit 11d performs a process of transmitting information such as the calculation result of the adhesion amount given by the adhesion amount calculation unit 11b and the calculation result of the protrusion amount given by the protrusion amount calculation unit 11c to the terminal device 3 that is the transmission source of the three-dimensional shape data. In addition, the information transmission processing unit 11d may transmit the three-dimensional shape data stored in the shape data storage unit 12b or transmit information such as a three-dimensional image in which the inside of the combustion chamber is reproduced in a three-dimensional virtual space based on the three-dimensional shape data, in response to a request from the terminal device 3, for example.

[0038] FIG. 3 is a block diagram showing the configuration of the terminal device 3 according to the present embodiment. The terminal device 3 according to the present embodiment is configured to include a processing unit 31, a memory unit (storage) 32, a communication unit (transceiver) 33, a display unit (display) 34, an operation unit 35, a camera 36, ​​and a distance measurement sensor 37. The terminal device 3 is a device used by a user such as a worker who cleans the combustion chamber or a manager who manages the incinerator, and may be configured using an information processing device such as a smartphone or a tablet terminal device. In the information processing system according to the present embodiment, the terminal device 3 is configured to include a camera 36 and a distance measurement sensor 37 and to be able to photograph the interior of the combustion chamber and measure the shape, but is not limited to this. The information processing system may be configured to perform measurement using another measuring device equipped with a camera and a distance measurement sensor, and the terminal device 3 may acquire the measurement results from the measuring device and transmit them to the information processing device 1.

[0039] The processing unit 31 is configured using an arithmetic processing device such as a CPU or an MPU, a ROM, etc. The processing unit 31 reads out and executes a program 32a stored in the storage unit 32, thereby performing various processes such as measuring the three-dimensional shape of the inner surface of the combustion chamber and displaying various information based on the measurement results.

[0040] The storage unit 32 is configured using a non-volatile memory element such as a flash memory or a storage device such as a hard disk. The storage unit 32 stores various programs executed by the processing unit 31 and various data required for the processing of the processing unit 31. In this embodiment, the storage unit 32 stores the program 32a executed by the processing unit 31. In this embodiment, the program (computer program, program product) 32a is distributed by a remote server device or the like, and the terminal device 3 acquires it through communication and stores it in the storage unit 32. However, the program 32a may be written in the storage unit 32, for example, during the manufacturing stage of the terminal device 3. For example, the program 32a may be read by the terminal device 3 from the program 32a recorded in a recording medium 98 such as a memory card or an optical disk and stored in the storage unit 32. For example, the program 32a may be read by a writing device from the program 32a recorded in the recording medium 98 and written in the storage unit 32 of the terminal device 3. The program 32a may be provided in a form of distribution via a network, or in a form of being recorded in the recording medium 98.

[0041] The communication unit 33 communicates with various devices via a network N including a mobile phone communication network, a wireless LAN, the Internet, etc. In this embodiment, the communication unit 33 communicates with the information processing device 1 via the network N. The communication unit 33 transmits data provided from the processing unit 31 to other devices, and provides data received from other devices to the processing unit 31.

[0042] The display unit 34 is configured using a liquid crystal display or the like, and displays various images, characters, and the like based on the processing of the processing unit 31. The operation unit 35 accepts user operations and notifies the processing unit 31 of the accepted operations. For example, the operation unit 35 accepts user operations through input devices such as mechanical buttons or a touch panel provided on the surface of the display unit 34. Furthermore, for example, the operation unit 35 may be input devices such as a mouse and a keyboard, and these input devices may be configured to be detachable from the terminal device 3.

[0043] The camera 36 is configured using an imaging element such as a CCD (Charge Coupled Device) image sensor or a CMOS (Complementary Metal Oxide Semiconductor) image sensor. The camera 36 is provided in the housing of the terminal device 3, and provides data of an image captured by the imaging element to the processing unit 31.

[0044] The distance measuring sensor 37 is a sensor such as LiDAR that measures the distance to an object by irradiating a laser beam and measuring the reflected light. Note that the distance measuring sensor 37 is not limited to a sensor that measures the distance using a laser beam, and may be a sensor that measures the distance using, for example, radio waves, ultrasonic waves, infrared light, or the like. The distance measuring sensor 37 provides data on the measured distance to the processing unit 31.

[0045] In this embodiment, the terminal device 3 simultaneously captures an image of the object (the inner surface of the combustion chamber) with the camera 36 and measures the distance with the distance measuring sensor 37, and generates three-dimensional shape data in which color (R, G, B) information and three-dimensional coordinate (X, Y, Z) information are given for each pixel of the captured image based on the image data obtained by capturing the image and the distance data obtained by measuring the distance. The camera 36 and the distance measuring sensor 37 may be provided in the terminal device 3 as a single unit.

[0046] In addition, in the terminal device 3 according to this embodiment, the processing unit 31 reads out and executes the program 32a stored in the memory unit 32, so that the measurement processing unit 31a, the display processing unit 31b, the range receiving unit 31c, etc. are realized in the processing unit 31 as software functional units.

[0047] The measurement processing unit 31a performs a process of measuring an object such as the interior surface of a combustion chamber using the camera 36 and the distance measuring sensor 37, and generating three-dimensional shape data of the object. The measurement processing unit 31a can calculate the three-dimensional coordinates (X, Y, Z) of the object based on information on the distance to the object obtained by the distance measuring sensor 37 and information such as the position and orientation of the terminal device 3 that can be detected by a sensor such as a gyro sensor (not shown). The measurement processing unit 31a calculates the three-dimensional coordinates of the object captured in each pixel of the captured image, and generates three-dimensional shape data in which the color (R, G, B) and the three-dimensional coordinates (X, Y, Z) are associated. The measurement processing unit 31a also transmits the generated three-dimensional shape data to the information processing device 1 together with information such as the measurement date and time, the identification information of the person who measured, and flag information indicating whether the data is before or after cleaning.

[0048] The display processing unit 31b performs a process of displaying various characters, images, and the like on the display unit 34. In this embodiment, the display processing unit 31b displays a three-dimensional image of the combustion chamber inner surface reproduced in a virtual space based on, for example, three-dimensional shape data obtained by the measurement of the measurement processing unit 31a. The process of generating a three-dimensional image based on the three-dimensional shape data may be performed by the terminal device 3 or the information processing device 1. The information processing device 1 or the terminal device 3 reproduces the shape of the combustion chamber inner surface by arranging a plurality of polygons in a three-dimensional virtual space based on the three-dimensional coordinates of a plurality of points included in the three-dimensional shape data, and further pastes color information of the plurality of points included in the three-dimensional shape data, i.e., the image of the combustion chamber inner surface, onto the polygon, thereby generating a three-dimensional model of the combustion chamber inner surface. The information processing device 1 or the terminal device 3 can generate an image (three-dimensional image) for displaying the three-dimensional model on the two-dimensional display unit 34 by appropriately arranging a virtual camera to take a picture of the three-dimensional model of the combustion chamber inner surface reproduced in the three-dimensional virtual space.

[0049] Furthermore, in this embodiment, the display processing unit 31b displays information regarding the amount of adhesion of the adhesion material on the combustion chamber inner surface and the amount of protrusion of the combustion chamber inner surface on the display unit 34 based on information from the information processing device 1. For example, the display processing unit 31b can display the total amount of adhesion of the adhesion material calculated by the information processing device 1 based on the difference between the three-dimensional shape data before cleaning and the three-dimensional shape data after cleaning as numerical information on the display unit 34. Furthermore, the display processing unit 31b can display the amount of adhesion of the adhesion material by, for example, superimposing a heat map showing the adhesion amount at each point on the combustion chamber inner surface in a color-coded manner on the three-dimensional image of the combustion chamber inner surface.

[0050] The display processing unit 31b also displays, for example, information related to the amount of protrusion of the combustion chamber inner surface calculated by the information processing device 1 based on three-dimensional shape data obtained from one measurement performed at an appropriate time together with an image of the combustion chamber inner surface. For example, the display processing unit 31b can display a contour map in which points with equal amounts of protrusion of the combustion chamber inner surface are connected by a line, superimposed on the image of the combustion chamber inner surface. For example, the display processing unit 31b can notify the user of a point detected by the information processing device 1 when the amount of protrusion of the combustion chamber inner surface exceeds a predetermined threshold value, for example, by highlighting the point by surrounding it with a bounding box on the image.

[0051] The range receiving unit 31c performs a process of receiving an operation to specify a range from the user for the image of the combustion chamber inner surface displayed on the display unit 34 by the display processing unit 31b. In the present embodiment, the range receiving unit 31c receives an operation to specify two points, a start point and an end point, from the user for the displayed image, and receives an area on a straight line connecting the start point and the end point as a range specified by the user. The range receiving unit 31c transmits information related to the range received from the user to the information processing device 1.

[0052] The information processing device 1 receives information regarding the range from the terminal device 3, calculates the amount of protrusion on the combustion chamber inner surface for this range, and transmits the calculation result to the terminal device 3. The display processing unit 31b of the terminal device 3 can display a graph showing the amount of protrusion on a specified line, in other words, a graph showing the cross-sectional shape of the deposit adhering to the combustion chamber inner surface cut by the specified line, based on the information received from the information processing device 1.

[0053] <Adhesion amount calculation process> In the information processing system according to the present embodiment, for example, cleaning work for removing deposits on the combustion chamber inner surface is performed periodically, and a user such as an operator or manager measures the three-dimensional shape of the combustion chamber inner surface before and after the cleaning work. The user photographs the combustion chamber inner surface in sequence with the camera 36 of the terminal device 3 in a manner similar to that of photographing a moving image. At this time, the terminal device 3 measures the distance using the distance measuring sensor 37 in addition to photographing with the camera 36, ​​and can obtain information (point cloud data) that associates the photographed image of the combustion chamber inner surface with the distance from the terminal device 3 at each point (pixel) in the photographed image as a measurement result. In addition, the terminal device 3 detects changes in the position and orientation of the terminal device 3 while the user is performing the measurement work using a gyro sensor or the like, and converts the distance at each point on the combustion chamber inner surface measured by the distance measuring sensor 37 into three-dimensional coordinates (X, Y, Z) with the position of the terminal device 3 at the time of starting the measurement as the origin, for example. This allows the terminal device 3 to generate three-dimensional shape data having information on color (R, G, B) and three-dimensional coordinates (X, Y, Z) for each point on the inner surface of the combustion chamber.

[0054] After the measurement is completed, the terminal device 3 transmits the generated three-dimensional shape data to the information processing device 1. The terminal device 3 also displays a three-dimensional image on the display unit 34, in which the inner surface of the combustion chamber is reproduced in a three-dimensional virtual space based on the three-dimensional shape data obtained by the measurement. FIG. 4 is a schematic diagram showing one display example of a three-dimensional image. The illustrated example shows a state in which a user measures the bottom surface of the combustion chamber using a tablet-type terminal device 3, and a three-dimensional image reproducing the bottom surface of the combustion chamber based on the three-dimensional shape data obtained by the measurement is displayed on the display unit 34 of the terminal device 3. The user can change the viewpoint, enlarge, reduce, etc. of the displayed three-dimensional image by performing, for example, a swipe operation and a pinch operation on the display unit 34 on which the three-dimensional image is displayed.

[0055] After two measurements, one before cleaning and one after cleaning, are completed, the information processing device 1 according to this embodiment performs a process of calculating the amount of adhesion, such as clinker, removed by cleaning, based on the two measurement results, one before cleaning and one after cleaning, acquired from the terminal device 3. FIG. 5 is a flowchart showing an example of the procedure of the adhesion amount calculation process performed by the information processing device 1 according to this embodiment. The shape data acquisition unit 11a of the processing unit 11 of the information processing device 1 according to this embodiment acquires three-dimensional shape data measured before cleaning the inside of the combustion chamber from the terminal device 3 by communicating with the terminal device 3 through the communication unit 13 (step S1). The shape data acquisition unit 11a stores the three-dimensional shape data acquired in step S1 in the shape data storage unit 12b together with information such as the measurement date and time and the identification information of the person who performed the measurement, and flag information indicating that this data is from before cleaning (step S2).

[0056] Thereafter, the shape data acquisition unit 11a acquires the three-dimensional shape data measured after cleaning of the combustion chamber inner surface (step S3). The shape data acquisition unit 11a stores the three-dimensional shape data acquired in step S3 in the shape data storage unit 12b together with information such as the measurement date and time and the identification information of the person who performed the measurement, and flag information indicating that the data is from after cleaning (step S4).

[0057] In the information processing device 1 that has acquired the measurement results before and after cleaning, the adhesion amount calculation unit 11b of the processing unit 11 calculates the difference between the three-dimensional shape data before cleaning acquired in step S1 and the three-dimensional shape data after cleaning acquired in step S3, thereby calculating the amount of adhesion of the adhesion at each point on the inner surface of the combustion chamber (step S5). Based on the adhesion amount at each point calculated in step S5, the adhesion amount calculation unit 11b generates a heat map in which each point is color-coded according to the adhesion amount (step S6).

[0058] The adhesion amount calculation unit 11b calculates the total amount of adhesion on the inner surface of the combustion chamber by summing the adhesion amounts at each point calculated in step S5 for all measured points (step S7). The information transmission processing unit 11d of the processing unit 11 transmits adhesion amount information including the heat map generated in step S6 and the total adhesion amount calculated in step S7 to the terminal device 3 (step S8), and ends the adhesion amount calculation process.

[0059] <Protrusion amount calculation process> In the information processing system according to the present embodiment, the information processing device 1 calculates the amount of protrusion of the combustion chamber inner surface due to adhesions based on the measurement results of the three-dimensional shape of the combustion chamber inner surface performed by the user at any timing, and can provide the calculation results to the user. This allows the user to grasp, for example, the condition of the combustion chamber inner surface at that time and determine the need for cleaning. Figures 6 and 7 are schematic diagrams for explaining one display example of information related to the amount of protrusion.

[0060] The terminal device 3 transmits three-dimensional shape data obtained by measuring the combustion chamber inner surface using the camera 36 and the distance measuring sensor 37 to the information processing device 1, and displays an image of the combustion chamber inner surface based on the measurement results. An example of an image display of the combustion chamber inner surface by the terminal device 3 is shown in the upper part of Fig. 6. For example, the terminal device 3 displays a three-dimensional image based on the three-dimensional shape data obtained by measurement, and displays an appropriate part of the combustion chamber inner surface on the display unit 34 by accepting operations such as changing the viewpoint and zooming in and out by the user.

[0061] The terminal device 3 accepts an operation to specify a linear range for calculating the protrusion amount by accepting a touch operation to select two points, a start point and an end point, on the display unit 34 while displaying an appropriate location of the combustion chamber inner surface. The operation to specify the linear range is not limited to the operation to select two points, a start point and an end point, and may be, for example, an operation to move a finger on the display unit 34 (slide operation, swipe operation). In addition, when the terminal device 3 does not have a touch panel, an input device such as a mouse may be used to specify the range. The lower part of FIG. 6 shows a state in which a line indicating a linear range specified by the user is superimposed on the image of the combustion chamber inner surface shown in the upper part of FIG. 6. The terminal device 3 transmits information about the specified range, for example, information about the coordinates of the start point and the end point if the range is a straight line, to the information processing device 1.

[0062] The information processing device 1 extracts information about the specified range from the measured three-dimensional shape data based on the range information provided by the terminal device 3. For example, when a linear range is specified as shown in Fig. 6, the information processing device 1 extracts information on the three-dimensional coordinates (X, Y, Z) of each point on the combustion chamber inner surface that overlaps with this straight line. For example, based on the three-dimensional coordinates (X, Y, Z) of the extracted multiple points, the information processing device 1 calculates the relative protrusion amount of each point based on the point with the smallest protrusion amount, generates a two-dimensional graph that associates the position on the specified straight line with the protrusion amount, and transmits the graph to the terminal device 3.

[0063] When a planar range is specified instead of a linear range, the information processing device 1 can extract the three-dimensional coordinates (X, Y, Z) of each point included in this range, calculate the relative protrusion amount in the same manner, and generate a three-dimensional graph in which the protrusion amount corresponds to the position on the specified plane. In this example, the information processing device 1 calculates the relative protrusion amount based on a point with a small protrusion amount, but this is not limited to this. For example, when initial data of the three-dimensional shape of the combustion chamber inner surface is stored, the difference from this initial data may be used as the protrusion amount.

[0064] The terminal device 3, which has acquired information on the amount of protrusion from the information processing device 1, displays, for example, a graph showing the amount of protrusion on the display unit 34. FIG. 7 shows an example of a screen on the display unit 34 in which the image of the inner surface of the combustion chamber shown in the lower part of FIG. 6 is superimposed with a range specified by the user, and a graph showing the amount of protrusion acquired from the information processing device 1 is arranged vertically. In the graph shown in the figure, the horizontal axis represents the position of the linear range specified by the user, and the vertical axis represents the amount of protrusion at the corresponding point. The amount of protrusion here may be a numerical value expressed in units of, for example, centimeters or millimeters. This graph corresponds to a cross-sectional view of the inner surface of the combustion chamber on the straight line specified by the user.

[0065] 8 is a flowchart showing an example of a procedure of a protrusion amount calculation process performed by the terminal device 3 according to this embodiment. The measurement processing unit 31a of the processing unit 31 of the terminal device 3 according to this embodiment performs a process of measuring the three-dimensional shape of the combustion chamber inner surface using the camera 36 and the distance measurement sensor 37 in response to a user's operation (step S21). The measurement processing unit 31a transmits the three-dimensional shape data of the combustion chamber inner surface obtained by the measurement process of step S21 to the information processing device 1 as a measurement result (step S22).

[0066] The display processing unit 31b of the processing unit 31 displays a three-dimensional image of the combustion chamber inner surface reproduced in a three-dimensional virtual space based on the three-dimensional shape data obtained by the measurement on the display unit 34 (step S23). The range receiving unit 31c of the processing unit 31 receives a user's operation to specify a range for the combustion chamber inner surface displayed in step S23 (step S24). The range receiving unit 31c transmits information about the range received in step S24 to the information processing device 1 (step S25).

[0067] Thereafter, the processing unit 31 receives information regarding the amount of protrusion inside the combustion chamber transmitted from the information processing device 1 at the communication unit 33 (step S26). The display processing unit 31b displays a graph, included in the information received at step S26, in which positions in the specified range are associated with the amount of protrusion at each position on the display unit 34 (step S27), and ends the process.

[0068] 9 is a flowchart showing an example of a procedure of a protrusion amount calculation process performed by the information processing device 1 according to this embodiment. The shape data acquisition unit 11a of the processing unit 11 of the information processing device 1 according to this embodiment acquires three-dimensional shape data of the combustion chamber inner surface obtained by measurement using the terminal device 3 by communicating with the terminal device 3 via the communication unit 13 (step S41). The shape data acquisition unit 11a stores the three-dimensional shape data acquired in step S41 in the shape data storage unit 12b together with information such as the measurement date and time and the identification information of the person who performed the measurement (step S42).

[0069] The protrusion amount calculation unit 11c of the processing unit 11 receives information on the range for calculating the protrusion amount, transmitted from the terminal device 3 (step S43). The protrusion amount calculation unit 11c extracts data on the range specified in the information received in step S43 from the three-dimensional shape data received in step S41 (step S44). The protrusion amount calculation unit 11c calculates the protrusion amount at each point in the specified range based on the data extracted in step S44 (step S45). At this time, the protrusion amount calculation unit 11c may calculate a relative protrusion amount based on, for example, a point with the smallest protrusion amount as a reference, or may calculate the protrusion amount based on a difference from the initial data of the three-dimensional shape data of the combustion chamber inner surface.

[0070] The protrusion amount calculation unit 11c generates a graph in which the positions in the specified range correspond to the protrusion amount at each position based on the protrusion amount calculated in step S45 (step S46). The information transmission processing unit 11d of the processing unit 11 transmits the protrusion amount information including the graph generated in step S46 to the terminal device 3 (step S47), and ends the protrusion amount calculation process.

[0071] Furthermore, in the information processing system according to this embodiment, the information processing device 1 generates a contour map in which points with equal protrusion amounts on the combustion chamber inner surface are connected by lines based on the measured three-dimensional shape data. The contour map may be generated, for example, for a range (planar range) specified by the user, or may be generated, for example, for the entire range measured without user specification. The information processing device 1 transmits information on the generated contour map to the terminal device 3. The terminal device 3 that receives this information can display, for example, the contour map superimposed on an image of the combustion chamber inner surface.

[0072] In addition, in the information processing system according to the present embodiment, after calculating the amount of protrusion of the combustion chamber inner surface based on the measured three-dimensional shape data, the information processing device 1 detects the point where the amount of protrusion exceeds the threshold by comparing the amount of protrusion of each point with a predetermined threshold. The detection of the point where the amount of protrusion exceeds the threshold may be performed, for example, for a range specified by the user, or may be performed, for example, for the entire range measured without the user's designation. The information processing device 1 may also set the threshold to be compared with the amount of protrusion as a value input by the user via the terminal device 3, for example. The information processing device 1 transmits information on the detection result of the point where the amount of protrusion exceeds the threshold to the terminal device 3. The terminal device 3 that receives this information performs highlighting display, for example, by superimposing a rectangular frame surrounding the point where the amount of protrusion exceeds the threshold on the image of the combustion chamber inner surface or by changing the color of this point. This allows the user to grasp the presence or absence of a point where the amount of protrusion due to adhesion exceeds the threshold, and to consider whether or not to clean and the place to clean.

[0073] 10 is a flowchart showing another example of the procedure of the protrusion amount calculation process performed by the information processing device 1 according to this embodiment. The shape data acquisition unit 11a of the processing unit 11 of the information processing device 1 according to this embodiment acquires three-dimensional shape data of the combustion chamber inner surface obtained by measurement using the terminal device 3 (step S61). The shape data acquisition unit 11a stores the three-dimensional shape data acquired in step S61 in the shape data storage unit 12b together with information such as the measurement date and time and the identification information of the person who performed the measurement (step S62).

[0074] The protrusion amount calculation unit 11c of the processing unit 11 calculates the protrusion amount at each point on the inner surface of the combustion chamber based on the three-dimensional shape data acquired in step S61 (step S63). The protrusion amount calculation unit 11c generates a contour map (isoline map) in which points with equal protrusion amounts on the inner surface of the combustion chamber are connected by lines based on the protrusion amounts at all points calculated in step S63 (step S64). The information transmission processing unit 11d of the processing unit 11 transmits the protrusion amount information including the contour map generated in step S64 to the terminal device 3 (step S65).

[0075] The protrusion amount calculation unit 11c also compares the protrusion amount of each point calculated in step S63 with a predetermined threshold value, and determines whether or not there is a point where the protrusion amount exceeds the threshold value (step S66). If there is a point where the protrusion amount exceeds the threshold value (S66: YES), the information transmission processing unit 11d notifies the terminal device 3 of information such as the coordinates of the point where the protrusion amount exceeds the threshold value (step S67), and ends the protrusion amount calculation process. If there is no point where the protrusion amount exceeds the threshold value (S66: NO), the processing unit 11 ends the protrusion amount calculation process.

[0076] <Summary> In the information processing system according to the present embodiment having the above configuration, the information processing device 1 acquires from the terminal device 3 first three-dimensional shape data of the combustion chamber inner surface at a first time point based on the measurement of the distance measuring sensor 37, and similarly acquires second three-dimensional shape data at a second time point. The information processing device 1 calculates the amount of adhesion of the adhesion on the combustion chamber inner surface based on the difference between the acquired first three-dimensional shape data and the second three-dimensional shape data, and outputs (transmits) information related to the calculated adhesion amount to the terminal device 3. As a result, the information processing system according to the present embodiment can calculate the adhesion amount of the adhesion that has increased or decreased between the first time point and the second time point and present it to the user who uses the terminal device 3, so that it is expected that the user can grasp information related to the adhesion amount of the adhesion on the combustion chamber inner surface.

[0077] Furthermore, in the information processing system according to this embodiment, the information processing device 1 displays (outputs) a three-dimensional image, which reproduces the shape of the inner surface of the combustion chamber in a three-dimensional virtual space based on the three-dimensional shape data obtained by measurement, on the display unit 34 of the terminal device 3, and displays information regarding the amount of adhesion of the deposits superimposed on this three-dimensional image. For example, the information processing device 1 can calculate the amount of adhesion at multiple points on the inner surface of the combustion chamber, and display a heat map showing the distribution of the adhesion amount superimposed on the three-dimensional image. As a result, the information processing system according to this embodiment is expected to allow the user to grasp which points on the inner surface of the combustion chamber have a large amount of adhesion.

[0078] In the information processing system according to this embodiment, a measurement is performed before cleaning as a first time point, and a measurement is performed after cleaning as a second time point, and the information processing device 1 calculates the amount of adhesion based on the difference between the measurement results at the two time points. As a result, the information processing system according to this embodiment is expected to calculate the amount of adhesion removed by cleaning the combustion chamber inner surface and present it to the user.

[0079] Furthermore, in the information processing system according to this embodiment, the information processing device 1 acquires three-dimensional shape data of the combustion chamber inner surface based on the measurement of the distance measuring sensor 37 from the terminal device 3, displays a three-dimensional image of the combustion chamber inner surface on the display unit 34 of the terminal device 3, and accepts a range designation from the user via the terminal device 3. The information processing device 1 calculates the amount of protrusion of the combustion chamber inner surface in the designated range based on the three-dimensional shape data obtained by measurement, and transmits (outputs) information related to the calculated amount of protrusion to the terminal device 3. As a result, the information processing system according to this embodiment can present information related to the amount of protrusion of the combustion chamber inner surface to the user on the terminal device 3 based on the result of one measurement performed at an appropriate time point, and it is expected that the user will be able to grasp the state of the combustion chamber inner surface at that time point.

[0080] Furthermore, the information processing system according to this embodiment accepts a linear range as a range specification from the user. The information processing device 1 extracts data of points included in the linear range from the three-dimensional shape data obtained by measurement, and generates a graph that associates positions in the specified range with the amount of protrusion at each position based on the extracted data, i.e., a graph showing the cross-sectional shape in the linear range, and displays it on the terminal device 3. This allows the information processing system according to this embodiment to provide information on the amount of protrusion inside the combustion chamber in a manner that is easier for the user to understand.

[0081] Furthermore, in the information processing system according to this embodiment, the information processing device 1 generates a contour map showing the amount of protrusion of the combustion chamber inner surface based on the three-dimensional shape data obtained by measurement, and displays the generated contour map on the terminal device 3 while superimposing it on the three-dimensional image of the combustion chamber inner surface. In this way, the information processing system according to this embodiment is expected to enable the user to grasp the amount of protrusion due to adhesions over a wide range of the combustion chamber inner surface.

[0082] Furthermore, in the information processing system according to this embodiment, the information processing device 1 calculates the amount of protrusion at each point on the inside of the combustion chamber based on the three-dimensional shape data obtained by measurement, identifies the point where the calculated amount of protrusion exceeds a threshold, and transmits (outputs) information about the identified point to the terminal device 3. In this way, the information processing system according to this embodiment can notify the user of the point identified by the information processing device 1 via the terminal device 3, and is expected to enable the user to recognize, for example, a point with a large amount of attached matter or a point in need of cleaning.

[0083] In this embodiment, the information processing device 1 and the terminal device 3 cooperate to perform the processing, but this is not limited to this. The terminal device 3 may perform the processing of calculating the adhesion amount and the processing of calculating the protrusion amount, which are performed by the information processing device 1 in this embodiment. In this case, the information processing device 1 does not need to be included in the information processing system, and the terminal device 3 does not need to have a communication function. Furthermore, the method of displaying the information on the adhesion amount and protrusion amount calculated by the information processing device 1 on the terminal device 3 is not limited to the display method shown in this embodiment, and various display methods may be adopted.

[0084] The embodiments disclosed herein are illustrative in all respects and should not be considered as limiting. The scope of the present disclosure is defined by the claims, not by the above meaning, and is intended to include all modifications within the scope and meaning equivalent to the claims.

[0085] The matters described in each embodiment can be combined with each other. In addition, the independent claims and dependent claims described in the claims can be combined with each other in any and all combinations regardless of the citation format. Furthermore, the claims use a format in which a claim cites two or more other claims (multiple claim format), but this is not limited to this. The claims may be written in a format in which a multiple claim cites at least one other multiple claim (multi-multi claim). [Explanation of symbols]

[0086] 1. Information processing equipment (computer) 3. Terminal equipment (information processing equipment, computers) 11 Processing section 11a Shape data acquisition section 11b Adhesion amount calculation section 11c Protrusion amount calculation part 11d Information transmission processing section 12 Storage section 12a Programs (computer programs) 12b Shape data storage section 13. Communications Department 31 Processing section 31a Measurement processing section 31b Display processing unit 31c Range Reception Section 32 Storage section 32a Programs (computer programs) 33 Communications Department 34 Display section 35 Control section 36 Camera 37 Distance Sensor 98,99 Recording media N Network

Claims

1. On the computer, obtaining first shape data of the combustion chamber inner surface at a first time point based on the measurement by the distance measuring sensor; acquiring second shape data of the inner surface of the combustion chamber at a second time point after the first time point based on the measurement by the distance measuring sensor; Based on the difference between the acquired first shape data and the acquired second shape data, information regarding unevenness of the inner surface of the combustion chamber is output. A computer program that executes a process.

2. outputting a three-dimensional image of the combustion chamber inner surface based on the first shape data or the second shape data; The information regarding the unevenness is superimposed on the three-dimensional image and output.

2. The computer program product of claim 1.

3. outputting information about the irregularities for each of a plurality of locations on the inner surface of the combustion chamber; 3. A computer program according to claim 2.

4. outputting the information regarding the unevenness in a heat map format; 4. A computer program according to claim 3.

5. the first point in time being a point in time prior to cleaning of the combustion chamber interior surface; The second point in time is a point in time after the combustion chamber inner surface has been cleaned.

2. The computer program product of claim 1.

6. outputting a three-dimensional image of the combustion chamber inner surface based on the first shape data or the second shape data; Accepting a range designation for the output three-dimensional image; outputting information regarding irregularities in the inner surface of the combustion chamber within a range that has been designated based on the first shape data; 2. The computer program product of claim 1.

7. Accepts linear range specifications, A graph showing a cross-sectional shape of the combustion chamber inner surface in the linear range is output as information about the unevenness.

7. A computer program according to claim 6.

8. based on the first shape data, a contour line indicating information regarding unevenness of the inner surface of the combustion chamber is superimposed on the three-dimensional image and output; 7. A computer program according to claim 6.

9. Identifying a location where information regarding unevenness of the combustion chamber inner surface exceeds a threshold value based on the first shape data; Outputting information about the identified location.

7. A computer program according to claim 6.

10. An information processing device, acquiring first shape data of the combustion chamber inner surface at a first time point based on the measurement by the distance measuring sensor; acquiring second shape data of the inner surface of the combustion chamber at a second time point after the first time point based on the measurement by the distance measuring sensor; outputting information regarding irregularities in the inner surface of the combustion chamber based on a difference between the acquired first shape data and the acquired second shape data; Information processing methods.

11. A processing unit is provided, The processing unit includes: acquiring first shape data of the combustion chamber inner surface at a first time point based on the measurement by the distance measuring sensor; acquiring second shape data of the inner surface of the combustion chamber at a second time point after the first time point based on the measurement by the distance measuring sensor; outputting information regarding irregularities in the inner surface of the combustion chamber based on a difference between the acquired first shape data and the acquired second shape data; Information processing device.

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