Deterioration determination device, deterioration determination system, deterioration determination method, and program

Abstract

To improve the accuracy in determining the deterioration of a structure.SOLUTION: A deterioration determination device of the present invention comprises: acquisition means for acquiring a diagnosis result of a first deterioration of a structure and a determination result of a displacement of the ground surface including the structure; determination means for determining a second deterioration of the structure using the diagnosis result of the first deterioration and the determination result of the displacement of the ground surface; and output means for outputting the second deterioration and the position of the second deterioration.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to determining the deterioration of a structure. [Background technology]

[0002] When roads and other structures that make up social infrastructure become unusable, it has a major impact on society. However, structures deteriorate over time. Therefore, structures are checked for deterioration and repairs are carried out before they become unusable.

[0003] However, the structures that make up the social infrastructure are generally quite large, and therefore checking for deterioration of the structures requires a lot of effort and expense.

[0004] Therefore, devices have been proposed that assist or improve the efficiency of measuring the deterioration of structures and the like (see, for example, Patent Documents 1 and 2).

[0005] The road surface inspection program described in Patent Document 1 determines deteriorated points on the road surface using the frequency of acceleration measurements at potential deterioration points.

[0006] The road management system described in Patent Document 2 predicts changes in road surface properties based on changes in road surface properties (road surface profiles indicating unevenness and displacement of the road surface) and changes in traffic volume during a measurement period. [Prior art documents] [Patent documents]

[0007] [Patent Document 1] Japanese Patent Application Laid-Open No. 2013-140448 [Patent Document 2] Japanese Patent Application Publication No. 2019-185443 Summary of the Invention [Problem to be solved by the invention]

[0008] Deterioration of a structure does not necessarily progress independently in each part of the structure. Furthermore, infrastructure structures are generally quite large relative to the size of vehicles. Therefore, it is desirable to use information related to changes in a wider range in addition to the results of measuring deterioration in individual parts, such as vehicle passage points on the road surface, to determine the deterioration of a structure.

[0009] Furthermore, deterioration does not necessarily progress from the surface of a structure (for example, the surface layer of a road surface). For example, if subsidence occurs in the ground that forms the foundation of a structure such as a paved road, the structure itself may deteriorate due to the subsidence.

[0010] The technologies described in Patent Documents 1 and 2 are technologies that determine deterioration based on the unevenness of the road surface at each point that a vehicle passes through. Therefore, while the technologies described in Patent Documents 1 and 2 can perform deterioration determination based on the unevenness of the surface of a structure, they cannot perform determination using displacement of the ground surface that forms the foundation of the road.

[0011] As described above, the techniques described in Patent Documents 1 and 2 have the problem that they cannot improve the accuracy of determining the deterioration of a structure.

[0012] An object of the present invention is to provide a deterioration determination device or the like that solves the above problems and improves the accuracy of determining deterioration of a structure. [Means for solving the problem]

[0013] According to one aspect of the present invention, a deterioration determination device includes: an acquisition means for acquiring a first deterioration diagnosis result of the structure and a determination result of displacement of the ground surface including the structure; a determination means for determining a second deterioration of the structure using the diagnosis result of the first deterioration and the determination result of the displacement of the ground surface; and an output means for outputting the second deterioration and the position of the second deterioration.

[0014] In one embodiment of the present invention, a deterioration determination system includes: an acquisition means for acquiring a first deterioration diagnosis result of the structure and a determination result of displacement of the ground surface including the structure; a determination means for determining a second deterioration of the structure using the diagnosis result of the first deterioration and the determination result of the displacement of the ground surface; an output means for outputting the second deterioration and the position of the second deterioration; a deterioration determination means for generating a first deterioration diagnosis result using sensor information related to the surface layer of the structure acquired by a terminal device mounted on the mobile body; Image analysis means for generating a determination result of the displacement of the ground surface using the observation results of the synthetic aperture radar; a deterioration determination device including: a terminal device mounted on the mobile object that transmits a first deterioration diagnosis result to the deterioration determination device; A synthetic aperture radar that transmits the results of the displacement of the ground surface, including the structure, to the deterioration determination device. The device includes a display device that acquires the second deterioration and the position of the second deterioration from the deterioration determination device and displays the second deterioration in association with the position of the second deterioration.

[0015] A deterioration determination method according to one aspect of the present invention includes: obtaining a first deterioration diagnosis result of the structure and a determination result of displacement of the ground surface including the structure; determining a second deterioration of the structure using the diagnosis result of the first deterioration and the determination result of the displacement of the ground surface; The second impairment and the location of the second impairment are output.

[0016] In one aspect of the present invention, the program A process of obtaining a diagnosis result of a first deterioration of the structure and a determination result of a displacement of the ground surface including the structure; a process of determining a second deterioration of the structure using the diagnosis result of the first deterioration and the determination result of the displacement of the ground surface; a process of outputting the second degradation and the position of the second degradation; to be executed by the computer. [Effects of the Invention]

[0017] According to the present invention, it is possible to achieve the effect of improving the accuracy of determining the deterioration of a structure. [Brief explanation of the drawings]

[0018] [Figure 1] FIG. 1 is a block diagram showing an example of the configuration of a deterioration determination system including a deterioration determination device according to a first embodiment of the present invention. [Figure 2] FIG. 2 is a diagram illustrating an example of a determination made by the determining unit. [Figure 3] FIG. 3 is a diagram showing an example of a road used to explain the display. [Figure 4] FIG. 4 is a diagram showing an example of a display of the determination result. [Figure 5] FIG. 5 is a diagram showing an example of a display of a portion where degradation is found. [Figure 6] FIG. 6 is a diagram showing an example of an enlarged display. [Figure 7] FIG. 7 is a diagram showing an example of highlighting. [Figure 8] FIG. 8 is a diagram showing an example of an image display. [Figure 9] FIG. 9 is a diagram showing an example of highlighting in a still image. [Figure 10] FIG. 10 shows an example of a menu for selecting a display. [Figure 11] FIG. 11 is a flowchart illustrating an example of the operation of the deterioration determining device according to the first embodiment. [Figure 12] FIG. 12 is a block diagram showing the general configuration of the deterioration determination device. [Figure 13] FIG. 13 is a block diagram showing an example of a hardware configuration of the deterioration determining device. DETAILED DESCRIPTION OF THE INVENTION

[0019] Next, an embodiment of the present invention will be described with reference to the drawings.

[0020] The drawings are intended to explain embodiments of the present invention. However, the embodiments of the present invention are not limited to the descriptions in the drawings. Similar components in the drawings are given the same numbers, and repeated descriptions thereof may be omitted. Furthermore, in the drawings used in the following description, descriptions of components not related to solving the problems of the present invention may be omitted or not shown in the drawings.

[0021] <Terminology> First, the terms used in the description of each embodiment will be explained.

[0022] "Sensor information" refers to information acquired using a predetermined sensor to determine deterioration in a portion of a structure (e.g., a road, bridge, ramp, levee, pier, revetment, or runway) that is the subject of the assessment. Each embodiment uses, as the sensor information, information related to the structure acquired using a predetermined sensor (e.g., an accelerometer or a camera) provided in a terminal device (e.g., a drive recorder) mounted on a moving body (e.g., a vehicle, a motorcycle, a drone, or a person). For example, the sensor information is the acceleration detected by an accelerometer of a drive recorder mounted on a vehicle that has traveled through the structure that is the subject of the assessment of deterioration, or an image captured by the drive recorder.

[0023] The "degree of deterioration" is the degree of deterioration of the part of the structure that is the subject of the evaluation, determined using sensor information.

[0024] In each embodiment, the degradation level may be expressed in any format. For example, a numerical value may be used as the degradation level. Alternatively, a value other than a numerical value may be used as the degradation level. For example, characters such as {large, small} or {large, medium, small} may be used as the degradation level.

[0025] When a value is used as the degradation level, the range of the degradation level value is arbitrary.

[0026] For example, if the "crack rate" of the road surface is used as the deterioration level, the deterioration level value will be in the range of 0.0 to 1.0 (0% to 100%).

[0027] The crack rate is the value obtained by dividing the area of ​​the cracks by the area of ​​the surveyed plot.

[0028] Alternatively, when "amount of rutting" is used as the degree of deterioration, the value of the degree of deterioration is generally an integer (unit: mm) greater than or equal to 0. Note that a rational number may be used as the value of the amount of rutting.

[0029] The rutting depth is the height from the rut to the convex portion within a predetermined range (for example, 20 m).

[0030] Alternatively, when the International Roughness Index (IRI) is used as the deterioration degree, the value of the deterioration degree is a rational number (unit: mm / m or m / km) equal to or greater than 0.

[0031] The IRI is an evaluation index for the unevenness of paved roads proposed by the World Bank in 1986.

[0032] Even when the Boeing Bump Index (BBI) is used as the deterioration level, the deterioration level value is a rational number (unit: dimensionless) greater than or equal to 0.

[0033] The BBI is a flatness index adopted by the United Nations Civil Aviation Administration in 2009.

[0034] In this way, the range of the deterioration level value is arbitrary, and the user of each embodiment may select a deterioration level that corresponds to the deterioration of the structure to be assessed as appropriate.

[0035] In the following description, the "crack rate" is used as an example of the deterioration degree. Therefore, in the following description, the deterioration degree increases as the deterioration progresses. However, the deterioration degree may be a value that decreases as the deterioration progresses, depending on the processing that uses the deterioration degree.

[0036] The "deterioration rate" is the rate of change in the degree of deterioration over time.

[0037] In each embodiment, the deterioration rate may be constant or may change over time. The user may select the type of deterioration rate according to the object of evaluation. For example, a linear approximation such as linear regression may be used as the deterioration rate. Alternatively, a quadratic curve (quadratic regression) may be used as the deterioration rate.

[0038] Furthermore, in each embodiment, a deterioration degree corresponding to a plurality of types of deterioration may be used as a deterioration diagnosis result. For example, in each embodiment, if the deterioration is cracks and ruts occurring in a structure, the deterioration degree may be, for example, a crack rate and a rut depth. In this case, in each embodiment, in addition to the deterioration degree for each type of deterioration, a deterioration rate may be used.

[0039] In the following description, for the sake of clarity, a case will be described in which one deterioration level (the crack rate, as described above) is used.

[0040] Here, "deterioration data" refers to data related to the results of a diagnosis of deterioration of a structure. For example, the deterioration data includes the type of deterioration (cracks, ruts, etc.) determined based on the condition of the surface of the structure and the location of the deterioration.

[0041] Specifically, the deterioration data may be the type, degree, and location of road surface deterioration determined using images captured by a drive recorder mounted on the vehicle.

[0042] Alternatively, the deterioration data may be the crack rate and its location on the road surface determined using images captured by a drive recorder mounted on the vehicle.

[0043] However, the degradation data may be data determined using information other than the images captured by the drive recorder. For example, the degradation data may be data determined using an accelerometer mounted on the vehicle.

[0044] In the following description, the deterioration level and location of cracks determined using images captured by a drive recorder are used as an example of deterioration data (data related to the diagnosis result of the first deterioration of the structure). In this case, the first deterioration is, for example, a crack in the structure.

[0045] In each embodiment, deterioration of a structure is determined using deterioration data (data related to the diagnosis result of the first deterioration of the structure). The deterioration of a structure determined using the deterioration data is referred to as "second deterioration."

[0046] The "surface layer" of a structure refers to the area where deterioration can be confirmed from the outside of the structure, for example, the surface and a predetermined area close to the surface. For example, the surface layer of a structure refers to the area from the surface to a predetermined depth. Alternatively, the surface layer of a structure refers to the portion of the structure that comes into contact with other objects (for example, in the case of a paved road, the surface layer that comes into contact with vehicle tires).

[0047] In the following description, the portion of the structure excluding the surface layer will be referred to as the "deep layer."

[0048] Note that some drive recorders can acquire data other than the position and images. For example, some drive recorders can acquire acceleration. In such cases, the degradation data may include the acceleration.

[0049] Alternatively, the degradation data may include images (still images and / or video images) captured by a drive recorder.

[0050] Synthetic Aperture Radar (hereinafter referred to as "SAR") is a radar that transmits and receives radio waves while a flying object (such as a satellite or airplane) is moving, and obtains images equivalent to those obtained by an antenna with a large aperture.

[0051] The resolution of radar observations improves as the antenna becomes larger. However, there is a limit to the size of the antenna that can be mounted on satellites. Therefore, SAR uses an antenna with a small actual aperture length to transmit and receive radio waves while flying (i.e., it artificially "synthesizes" the "aperture"), thereby increasing the resolution in the direction of travel (i.e., it creates a virtually large antenna).

[0052] "Interferometric SAR" is a technology that uses SAR to make two observations of the same location on the Earth's surface, and measures the difference in distance to that location between the two observations from the difference in the "phase" of the two reflected waves (for example, in the case of the Earth's surface, the displacement (subsidence or uplift) of the surface).

[0053] The sign of the displacement of the ground surface is arbitrary. The sign may be positive if the subsidence increases. Alternatively, the sign may be positive if the uplift increases. Alternatively, the displacement may be an absolute value.

[0054] "Ground surface displacement rate" refers to the rate of change over time (for example, mm / year) of ground surface displacement (subsidence or uplift). In the following explanation, the sign of the ground surface displacement rate is positive when the rate of subsidence increases. However, the sign of the ground surface displacement rate may also be positive when the rate of uplift increases. Alternatively, the ground surface displacement rate may be an absolute value.

[0055] "Ground surface displacement data" refers to the results of determining the ground surface, including structures. For example, ground surface displacement data is data on ground surface displacements, such as subsidence and uplift. For example, ground surface displacement data is data including the displacement of the ground surface measured using interferometric SAR and the location of the displacement.

[0056] The ground surface displacement data may be data measured using a technique other than Interferometric SAR, as long as it is data measuring displacement (subsidence or uplift) over a certain range on the ground surface. However, in the following explanation, data on ground surface displacement measured using Interferometric SAR will be used as an example of ground surface displacement data.

[0057] Specifically, Interferometric SAR measures the displacement of the distance to a structure on the ground (the ground supporting the foundation of the structure). However, deformation of a structure is generally smaller than changes in the ground. In addition, Interferometric SAR measures displacement of the ground surface using a technique for removing noise based on various factors. Therefore, each embodiment operates by regarding the displacement of the distance measured using Interferometric SAR as the displacement of the surface of the ground (i.e., the earth's surface) on which the structure is based.

[0058] First Embodiment The first embodiment will be described below with reference to the drawings.

[0059] [Configuration Description] First, the configuration of a deterioration determining device 10 according to the first embodiment will be described with reference to the drawings.

[0060] FIG. 1 is a block diagram showing an example of the configuration of a deterioration determination system 50 including a deterioration determination device 10 according to a first embodiment of the present invention.

[0061] The deterioration determination system 50 includes a deterioration determination device 10, a drive recorder 20, an SAR 30, and a display device 40.

[0062] The devices included in the deterioration determination system 50 are connected via a predetermined communication path (for example, the Internet or a public telephone line). The communication path may be wired, wireless, or a combination of wired and wireless.

[0063] The drive recorder 20 is a terminal device mounted on a moving body (for example, a vehicle) and acquires sensor information (for example, a surface image of the structure (for example, an image of the road surface)) related to the structure to be determined (for example, a road, a bridge, a ramp, a levee, a pier, a revetment, or a runway).The drive recorder 20 then transmits the acquired sensor information to the deterioration determination device 10.

[0064] The drive recorder 20 may be any terminal device capable of acquiring video and acceleration data. The mobile object may be any device capable of carrying a terminal device. For example, the mobile object may be a vehicle, a motorcycle, or a drone. Alternatively, a person may carry the terminal device.

[0065] The SAR 30 is a device or system that uses SAR (interferometric SAR) to observe a predetermined range including a structure to be determined, and transmits the observation results to the deterioration determination device 10.

[0066] The display device 40 includes a display device such as a liquid crystal display, and displays the determination results obtained from the deterioration determination device 10. The deterioration determination system 50 may use any device as the display device 40. For example, the display device 40 may be a display device included in a system of a local government that manages roads. Alternatively, the display device 40 may be a terminal device of a worker who checks the structure.

[0067] The display format of the display device 40 is arbitrary. The creator or user of the deterioration determination system 50 may select the display format as appropriate according to the intended use of the display.

[0068] The deterioration determination device 10 determines the deterioration (second deterioration) of the structure to be determined using the deterioration data related to the diagnosis result of the first deterioration and the ground surface displacement data. Then, the deterioration determination device 10 transmits the determination result to the display device 40 or a device not shown. The deterioration determination device 10 may store the determination result.

[0069] Next, the configuration of the deterioration determining device 10 will be described.

[0070] The deterioration determining device 10 includes an acquiring unit 110 , a saving unit 120 , a determining unit 130 , an output unit 140 , a deterioration determining unit 150 , and an image analyzing unit 160 .

[0071] The deterioration determination unit 150 calculates the degree of deterioration of the surface layer of each part of the structure (an example of first deterioration) using sensor information acquired from the drive recorder 20. Then, the deterioration determination unit 150 generates deterioration data including at least the calculated degree of deterioration and its location. In other words, the deterioration determination unit 150 generates the deterioration data using sensor information related to the surface layer of the structure acquired by a terminal device mounted on a mobile body such as the drive recorder 20.

[0072] Then, the deterioration determining unit 150 transmits the generated deterioration data to the acquiring unit 110. The deterioration determining unit 150 may include other information (for example, type of deterioration, image, and / or acceleration) in the deterioration data.

[0073] The image analysis unit 160 generates ground surface displacement data including at least the displacement of the ground surface and the position of the displacement, using the observation results acquired from the SAR 30. Then, the image analysis unit 160 outputs the generated ground surface displacement data to the acquisition unit 110.

[0074] The acquisition unit 110 acquires degradation data and ground surface displacement data. Then, the acquisition unit 110 stores the acquired degradation data and ground surface displacement data in the storage unit 120. Note that the acquisition unit 110 may acquire the degradation data and ground surface displacement data at any timing. Furthermore, the acquisition unit 110 may acquire the degradation data at a frequency different from the frequency at which it acquires the ground surface displacement data.

[0075] Furthermore, the number and amount of degradation data acquired by the acquisition unit 110 may be different from the number and amount of ground surface displacement data.

[0076] Furthermore, the range of positions included in the degradation data acquired by the acquisition unit 110 may be partially different from the range of positions included in the ground surface displacement data.

[0077] Furthermore, the granularity of the degradation data acquired by the acquisition unit 110 may be different from the granularity of the ground surface displacement data.

[0078] Furthermore, the data format of the degradation data acquired by the acquisition unit 110 may be different from the data format of the ground surface displacement data.

[0079] In the determination operation described below, the determination unit 130 may convert the data as appropriate before executing the determination operation.

[0080] The acquiring unit 110 may store either or both of the degradation data and the ground surface displacement data acquired during a predetermined period in the storage unit 120. In other words, the acquiring unit 110 may store either or both of the degradation data and the ground surface displacement data in the storage unit 120 in chronological order.

[0081] The storage unit 120 stores the degradation data and the ground surface displacement data.

[0082] Furthermore, the storage unit 120 may store other data. For example, the storage unit 120 may store map data including the structure to be determined. Furthermore, the storage unit 120 may store a floor plan or structural drawing of the structure to be determined.

[0083] The determining unit 130 acquires the degradation data and the ground surface displacement data stored in the storage unit 120. However, the determining unit 130 may acquire the degradation data and the ground surface displacement data from the acquiring unit 110.

[0084] Then, the determination unit 130 determines the deterioration (second deterioration) of the structure to be determined using the deterioration data (data related to the diagnosis result of the first deterioration of the structure) and the ground surface displacement data (determination result of the displacement of the ground surface).

[0085] More specifically, the determination unit 130 performs the determination as follows. The deterioration data and the ground displacement data each include a position. Therefore, the determination unit 130 associates the first deterioration diagnosis result included in the deterioration data with the displacement included in the ground displacement data using the positions included in each data. Then, the determination unit 130 determines the deterioration (second deterioration) of the structure using the first deterioration diagnosis result and the displacement of the ground displacement data.

[0086] Note that the determination unit 130 may include the location of the determined part in addition to the information indicating the second degradation in the determination result. Furthermore, if the storage unit 120 stores map data or the like, the determination unit 130 may associate the determination result with the map data or the like.

[0087] Alternatively, if the degradation data includes an image of a structure, the determination unit 130 may include the image of the structure in the determination result. For example, the determination unit 130 may superimpose or embed the determination result in the image of the structure.

[0088] The deterioration data is data that indicates the deterioration of the surface layer of a structure (for example, the paved surface of a road).

[0089] In contrast, the ground surface displacement data is data that indicates the displacement of the ground surface over a certain range, including structures.

[0090] For example, in general, cracks often develop on road pavement from the surface layer (hereinafter referred to as the "first deterioration state").

[0091] However, when ground subsidence occurs, cracks may develop in the road pavement not in the surface layer but in the part closer to the ground (deep layer). In this case, the cracks spread from the deep layer to the surface layer. In other words, when cracks develop in the surface layer due to ground subsidence, the cracks spread from the deep layer to the surface layer. Therefore, in this case, by the time cracks appear in the surface layer, cracks have already developed throughout the entire pavement, from bottom to top (hereinafter referred to as the "second deterioration state").

[0092] Alternatively, for structures that straddle an area where land subsidence has occurred and an area where it has not, stress is applied from the surface to the deeper layers of the structure at the boundary between the two areas. As a result, cracks are likely to occur at the boundary, leading to a second deterioration state.

[0093] The techniques described in Patent Documents 1 and 2 cannot distinguish between the first and second deterioration states because they make the determination using the uneven shape of the road surface.

[0094] However, in making the determination, the determination unit 130 uses the displacement of the ground surface including the structure (ground surface displacement data) in addition to the state of the surface layer of the structure to be determined (deterioration data). Therefore, the determination unit 130 can distinguish between the first deterioration state and the second deterioration state. In this way, the determination unit 130 can determine deterioration more appropriately than the techniques described in Patent Documents 1 and 2. In other words, the determination unit 130 can improve the accuracy of determining the deterioration of a structure compared to the techniques described in Patent Documents 1 and 2.

[0095] The determination unit 130 may use any method for making the determination. The determination unit 130 may make the determination based on findings about the structure (for example, a history of past deterioration determinations). The determination unit 130 may determine deterioration using artificial intelligence (AI).

[0096] FIG. 2 is a diagram showing an example of the second degradation determination in the determining unit 130 according to the first embodiment.

[0097] 2, the determination unit 130 compares the degree of deterioration contained in the deterioration data and the ground surface displacement contained in the ground surface displacement data with predetermined thresholds (hereinafter referred to as the "deterioration threshold" and the "displacement threshold", respectively) and determines whether each is "large / small." Then, using the results of the determination of "large / small," the determination unit 130 determines four types of deterioration (second deterioration) levels for the portion of the target structure to be determined.

[0098] The "small" degree of deterioration and displacement includes the case where there is no deterioration or displacement, respectively.

[0099] For portions where the degree of deterioration is small and the ground displacement is small, the determining unit 130 determines them as "Level 1." A portion determined as Level 1 is a portion that is in a sound state or has deteriorated to the extent that it does not cause operational problems.

[0100] For portions where the degree of deterioration is small but the ground surface displacement is large, the determining unit 130 determines the portion as "Level 2." A portion determined as Level 2 is a portion where the surface layer has little deterioration, but the ground surface (i.e., the ground that is the foundation of the structure) has been greatly displaced. Therefore, a portion determined as Level 2 is a portion where the surface layer has little deterioration, but there is a possibility that deterioration has occurred in deeper layers (for example, deep layers close to the soil of the road). Alternatively, a portion determined as Level 2 is a portion where deterioration has not yet occurred, but is assumed to be more likely to occur in the future than a portion determined as Level 1.

[0101] For a portion where the degree of deterioration is large and the ground displacement is small, the determining unit 130 determines it to be Level 3. In a portion determined to be Level 3, the displacement of the ground that forms the foundation of the structure is small, and therefore the detected deterioration is assumed to be in the surface layer and / or a portion close to the surface layer.

[0102] For areas with a high degree of deterioration and large ground displacement, the determining unit 130 determines the area as level 4. Areas determined as level 4 have not only surface layer deterioration but also large displacement of the ground that forms the foundation of the structure. Therefore, areas determined as level 4 are areas where it is assumed that deterioration such as cracks is highly likely to have progressed not only to the surface layer but also to deeper layers.

[0103] The magnitude of risk from levels 1 to 4 is roughly as follows: Level 1 < Level 2 ≒ Level 3 < Level 4 However, whether the risk is greater, Level 2 or Level 3, depends on the target structure and / or the data collection status. Therefore, for example, users can decide whether the risk is greater, Level 2 or Level 3, based on the target structure and / or the data collection status.

[0104] The technologies described in Patent Documents 1 and 2 determine deterioration based solely on the unevenness of the pavement surface. Therefore, they cannot distinguish between Levels 1 and 2, or Levels 3 and 4.

[0105] Returning to the explanation with reference to FIG.

[0106] When the storage unit 120 stores deterioration data and / or ground surface displacement data in chronological order, the determination unit 130 may predict the change in deterioration over time (e.g., aging) using the change in deterioration and / or ground surface displacement over time (e.g., deterioration rate and / or ground surface displacement rate).

[0107] The determining unit 130 may use different methods or prediction formulas for the prediction using the degradation data and the prediction using the ground surface displacement data.

[0108] Furthermore, the determining unit 130 may change the prediction method or the like using the results of the second deterioration determination such as the above levels 1 to 4, which uses the deterioration data and the ground surface displacement data.

[0109] Furthermore, the determination unit 130 may change the method used for prediction by taking into consideration both the deterioration data and the ground surface displacement data. For example, when performing prediction using deterioration data, the determination unit 130 may select a prediction formula based on the ground surface displacement at the point where deterioration is predicted. For example, the determination unit 130 may use a prediction formula in which deterioration progresses more quickly as a prediction formula to be used for a point where the ground surface displacement is large than a prediction formula to be used for a point where the ground surface displacement is small.

[0110] Furthermore, the determination unit 130 may use AI for prediction. In this case, the determination unit 130 may use different AI for prediction using the degradation data and for prediction using the ground surface displacement data.

[0111] The determination unit 130 may determine the deterioration for each category within a predetermined range. For example, the determination unit 130 may determine the deterioration according to the management category used by the user of the deterioration determination system 50.

[0112] Alternatively, when the granularity of the data degradation data and the granularity of the ground surface displacement data are different, the determining unit 130 may determine the degradation according to either of the granularities.

[0113] For example, if the ground surface displacement data is data for each specified area, the output unit 140 may determine the deterioration using the result of integrating the deterioration of the degraded data contained in each area (e.g., the average degree of deterioration) and the displacement of that area as the judgment result for each area.

[0114] Then, the determining unit 130 sends the determination result (including the second degradation) to the output unit 140.

[0115] The determination unit 130 may store the determination result in the storage unit 120.

[0116] The output unit 140 outputs the determination result obtained from the determination unit 130 to a predetermined device such as the display device 40. If the determination result includes a position, the output unit 140 outputs the determination result including the position.

[0117] If the storage unit 120 stores data other than the deterioration data and the ground surface displacement data (for example, map data), the output unit 140 may output the determination result of the determination unit 130 in association with the data.

[0118] In this case, for example, the display device 40 may display the determination result by superimposing it on data (for example, map data) acquired together with the determination result.

[0119] Display of the determination result will be described with reference to the drawings.

[0120] Fig. 3 is a diagram showing an example of a road used to explain the display, and shows a road including an intersection as an example of the road.

[0121] 4 is a diagram showing an example of the display of the determination result. For example, the display device 40 displays an image as shown in FIG. 4. However, the display on the display device 40 is not limited to FIG.

[0122] In Fig. 4, the structure to be judged is the road shown in Fig. 3. The levels in Fig. 4 are the levels explained with reference to Fig. 2. Fig. 4 divides the road into predetermined sections (thick rectangles), and displays the level as the judgment result for each section.

[0123] Note that the portions with a low degree of degradation are portions where no degradation is found. Therefore, the display device 40 may omit displaying the portions with a low degree of degradation and display portions where degradation is found (for example, the portions with a high degree of degradation in FIG. 4).

[0124] FIG. 5 is a diagram showing an example of a display of a portion where degradation is found.

[0125] The manager of the structure can use the levels displayed as in Figure 4 or Figure 5 to better plan and carry out inspections and repairs of the structure.

[0126] For example, the number of man-hours required to check the deterioration of a structure is limited, so it is desirable to provide information such as the priority of parts that require checking.

[0127] The result of the determination of level 1 or 2 provides information that can be used to determine the priority of checking such deterioration.

[0128] It is assumed that areas judged as Level 2 are more likely to be in a state of advanced deterioration than areas judged as Level 1. Therefore, for example, the manager of the structure can appropriately set the frequency of future inspections of areas judged as Level 2 based on the results of the Level 1 and 2 assessments, such as by increasing the frequency of inspections of areas judged as Level 2 compared to areas judged as Level 1.

[0129] In addition, repairs to areas judged to be level 3 will be superficial repairs.

[0130] On the other hand, repairs to areas judged to be level 4 will involve repairs to the entire area from the surface to the deeper layers (for example, the entire pavement of a road).

[0131] It is predicted that parts judged as Level 4 will deteriorate faster than parts judged as Level 3. Therefore, even if parts judged as Level 4 do not require immediate repair, the user may prioritize checking them, for example, by checking parts judged as Level 4 more frequently than parts judged as Level 3.

[0132] The number of man-hours available to repair deteriorated structures is limited. Furthermore, the details of repairs for the target structure are essential information for planning repairs. Therefore, it is desirable to provide information on the location of repairs as well as the details of the necessary repairs.

[0133] The results of the above level 3 and 4 assessments provide information that can be used to determine the repair content.

[0134] For example, the manager of a structure can use the level 3 and 4 assessment results to appropriately formulate plans for future repairs to the assessed parts.

[0135] In addition to the above display, the display device 40 may display detailed information. For example, the display device 40 may enlarge a part of the display.

[0136] Fig. 6 is a diagram showing an example of an enlarged view. Fig. 6 shows the location of the deterioration in more detail than Fig. 4 as an enlarged view. Furthermore, Fig. 6 displays the degree of deterioration according to its level (black circles indicate high levels of deterioration, and diagonal lines indicate medium levels of deterioration). Note that Fig. 6 omits the display of low levels of deterioration.

[0137] Additionally, the display device 40 may highlight the location of the deterioration.

[0138] Fig. 7 is a diagram showing an example of highlighting. In Fig. 7, areas determined to be cracks are surrounded by a square in the enlarged view as highlighting. Furthermore, Fig. 7 shows cracks in each area as an example of display.

[0139] Alternatively, the display device 40 may display an image (moving image or still image) of the determination target in addition to or instead of the enlarged view.

[0140] FIG. 8 is a diagram showing an example of an image display.

[0141] The display device 40 may superimpose on the image the results of the deterioration determination made by the deterioration determination device 10 (for example, the first deterioration diagnosis result, the second deterioration, the determined level of deterioration, and the displacement of the ground surface (subsidence and / or uplift)). Alternatively, the display device 40 may highlight the location of the deterioration on the image.

[0142] Fig. 9 is a diagram showing an example of highlighting in a still image, in which a square indicating the cracked area and the crack within the square are displayed as an example of highlighting.

[0143] Furthermore, the display device 40 may display information (for example, a menu) for selecting a display.

[0144] FIG. 10 shows an example of a menu for selecting a display. As an example of the menu, FIG. 10 displays a menu for selecting the type of deterioration, level, and type of ground displacement to be displayed. Note that FIG. 10 shows a case where the display of crack rate, level 4, and subsidence has been selected. The display device 40 can change the display of deterioration using such a menu. For example, the display device 40 may use such a menu to switch ON and OFF the display of the deterioration indication (e.g., marker) and the display of ground displacement.

[0145] However, these figures are merely for the purpose of explaining examples of displays, and the displays of the display device 40 are not limited to these.

[0146] [Explanation of operation] Next, the operation of the deterioration determining device 10 according to the first embodiment will be described with reference to the drawings.

[0147] FIG. 11 is a flowchart showing an example of the operation of the deterioration determining device 10 according to the first embodiment.

[0148] The deterioration determining device 10 acquires deterioration data (step S701).

[0149] Furthermore, the deterioration determining device 10 acquires ground surface displacement data (step S702).

[0150] The order of the operations in steps S701 and S702 may be reversed. Alternatively, the degradation determining device 10 may at least partially execute steps S701 and S702 in parallel.

[0151] In this way, since steps S701 and S702 may be executed in parallel, steps S701 and S702 are enclosed by a double line in FIG.

[0152] The deterioration determination device 10 may also execute either or both of steps S701 and S702 multiple times. Furthermore, when executing both steps S701 and S702 multiple times, the deterioration determination device 10 may execute steps S701 and S702 different numbers of times.

[0153] The deterioration determining device 10 determines the deterioration of the structure using the deterioration data and the ground surface displacement data (step S703).

[0154] Then, deterioration determining device 10 outputs the determination result (step S704).

[0155] [Effect description] Next, the effects of the deterioration determining device 10 according to the first embodiment will be described.

[0156] The deterioration determining device 10 according to the first embodiment can achieve the effect of improving the accuracy of determining the deterioration of a structure.

[0157] The reasons are as follows:

[0158] The deterioration determination device 10 includes an acquisition unit 110, a determination unit 130, and an output unit 140. The acquisition unit 110 acquires a diagnosis result of a first deterioration of the structure and a determination result of a displacement of the ground surface including the structure. The determination unit 130 determines a second deterioration of the structure using the diagnosis result of the first deterioration (e.g., deterioration data) and the determination result of the displacement of the ground surface (e.g., ground surface displacement data). The output unit 140 outputs the second deterioration and the location of the second deterioration.

[0159] Deterioration does not necessarily progress from the surface of a structure (for example, the surface layer of a road surface).

[0160] For example, the ground that forms the foundation of a paved road is not necessarily fixed. For example, land subsidence can occur over a fairly wide area based on changes in the underground structure of the ground (for example, depletion of groundwater). When land subsidence occurs, structures based on that ground (for example, roads) will deteriorate due to the sinking of the ground.

[0161] When land subsidence occurs in a certain area, the road in the affected area deforms downward relative to the roads in the surrounding areas. In this case, the deformation of the pavement is greater on the side closer to the ground (i.e., the side farther from the surface). As a result, there are more cracks in the pavement that develop on the side closer to the ground than on the surface.

[0162] In this way, when determining the deterioration of a structure, it is desirable to take into account not only the state of the surface shape of the structure, but also changes in a wider range including the structure, such as ground subsidence (for example, displacement of the ground surface on which the structure is based).

[0163] Therefore, based on the above configuration, the deterioration determination device 10 determines the deterioration of a structure by using the result of determining the displacement of the ground surface including the structure (ground surface displacement data) in addition to the result of diagnosing the first deterioration of the structure (for example, deterioration data). Therefore, the deterioration determination device 10 realizes the effect of being able to improve the accuracy of determining the deterioration of a structure compared to when determination is made simply using the unevenness of the surface of the structure.

[0164] Furthermore, the deterioration determination device 10 includes a deterioration determination unit 150 and an image analysis unit 160. The deterioration determination unit 150 generates deterioration data using sensor information related to the surface of a structure acquired by a terminal device mounted on a mobile object. The image analysis unit 160 generates ground surface displacement data using observation results from a synthetic aperture radar (SAR). Therefore, the deterioration determination device 10 can determine deterioration using the deterioration data and ground surface displacement data, using the sensor information acquired from the drive recorder 20 and the observation results acquired from the SAR 30.

[0165] Furthermore, the deterioration determination system 50 includes a display device 40 in addition to the deterioration determination device 10. Therefore, the deterioration determination system 50 can provide the user with a display of the results of the determination made by the deterioration determination device 10. This allows the user and the like to understand the deterioration of the structure with improved determination accuracy.

[0166] The deterioration determination system 50 further includes a drive recorder 20 and an SAR 30. Therefore, the deterioration determination system 50 can acquire sensor information used by the deterioration determination device 10 for determination and observation results of the earth's surface.

[0167] [Application example] A specific application example of the deterioration determination using the deterioration data and ground surface displacement data in the deterioration determination device 10 will be described.

[0168] (1) Detecting bridge deterioration As bridge deterioration progresses, deflection and sway become greater.

[0169] When a bridge is deflected (more specifically, when the framework that constitutes the bridge or the wires of a suspension bridge are deformed), the surface of the bridge (the surface that can be measured by SAR 30) is displaced. Therefore, the deterioration determination device 10 can use the displacement of the bridge part included in the ground surface displacement data as the deflection of the bridge.

[0170] Furthermore, when a bridge sags, deterioration such as cracks increases and / or increases. The deterioration determination device 10 can determine the degree of deterioration such as cracks of the bridge using the deterioration included in the deterioration data.

[0171] The deterioration determination device 10 determines the deterioration using both the deterioration data and the ground surface displacement data. Therefore, the deterioration determination device 10 can improve the accuracy of determining the deflection of the bridge compared to when the deterioration of the surface layer is used for the determination.

[0172] Furthermore, some models of the drive recorder 20 are capable of measuring acceleration. Alternatively, the vehicle equipped with the drive recorder 20 may be equipped with an accelerometer. In these cases, the deterioration data may include acceleration.

[0173] Furthermore, when the bridge sways significantly, the acceleration (especially the acceleration in the vertical and horizontal directions) of the vehicle equipped with the drive recorder 20 increases. Therefore, when the deterioration data includes acceleration, the deterioration determination device 10 may determine bridge deterioration taking acceleration into account. In this case, the deterioration determination device 10 can further improve the accuracy of the determination.

[0174] (2) Assessment of deterioration due to underground construction In construction work such as shield tunneling, which creates underground spaces, subsidence of the ground surface may occur. However, it is difficult to determine the risk of occurrence of a cave-in based on the amount of subsidence alone. However, before a cave-in occurs, deterioration such as cracks occurs. In other words, a determination using the amount of subsidence and deterioration such as cracks can improve the accuracy of determining the risk of a cave-in compared to a determination based solely on the amount of subsidence.

[0175] The deterioration determination device 10 determines the deterioration using the deterioration included in the deterioration data and the ground surface displacement included in the ground surface displacement data, and therefore can more accurately determine the risk of cave-ins and other problems associated with construction work to create underground spaces, such as shield construction.

[0176] If the deterioration data includes an image, the deterioration determination device 10 may output an image of the surface layer in conjunction with the determination result. In this case, the user can more appropriately grasp the risk using the image in addition to the determination by the deterioration determination device 10.

[0177] (3) Seawall The deterioration determination device 10 is not limited to determining deterioration of horizontal surfaces such as roads and runways, but may also determine deterioration of slopes and vertical surfaces such as revetments for preventing erosion destruction on coasts and riverbanks.

[0178] For example, revetments have the problem of lateral flow, which occurs from the embankment side of the revetment, causing pile breakage and road surface cracks.

[0179] The ground surface displacement data includes displacement caused by lateral flow of the revetment.

[0180] However, it is difficult to determine the risk of pile breakage and other problems caused by lateral flow based on the amount of displacement alone. However, before pile breakage occurs, deterioration such as cracks, which is smaller in scale than pile breakage, occurs in the revetment and / or the road surface around the revetment. In other words, determination using the amount of revetment displacement and deterioration such as cracks in the surface layer of the revetment and / or the road surface around the revetment can improve the accuracy of determining the risk of pile breakage compared to determination based solely on the amount of revetment displacement.

[0181] The deterioration determination device 10 determines deterioration using the deterioration of the surface layer included in the deterioration data and the displacement included in the ground surface displacement data. Therefore, the deterioration determination device 10 can more accurately determine the risk of pile breakage due to lateral flow in revetments, etc.

[0182] In this case, the deterioration determining device 10 may also output an image of the surface layer in accordance with the determination result.

[0183] (4) Data Completion The images acquired by the drive recorder 20 include images in which deterioration cannot be determined or in which the accuracy of the deterioration determination is low. For example, it is difficult to determine the deterioration in images taken at night. Also, tire marks on runways and roads may hide cracks. Therefore, the deterioration data may not include the deterioration in such areas. For such areas, it is desirable to perform a visual inspection to determine the deterioration.

[0184] Therefore, the deterioration determination device 10 may prompt the user to inspect for deterioration (for example, visually inspect) a portion where the displacement in the ground surface displacement data is greater than the displacement threshold but the degree of deterioration in the deterioration data is determined to be less than the deterioration threshold.

[0185] If the deterioration data includes an image, the deterioration determination device 10 may prompt the user to inspect the target part using the image. In this case, the user can refer to the image to determine whether or not the part for which inspection is recommended needs to be inspected (for example, whether or not tire marks or the like have covered up the deterioration in the part).

[0186] Alternatively, the deterioration determination device 10 may output a portion where the displacement in the ground surface displacement data is greater than the displacement threshold value but the degree of deterioration in the deterioration data is less than the deterioration threshold value, based on an instruction from the user.

[0187] (5) Expansion of surface displacement data SAR30 can observe not only displacement of the ground surface but also displacement of the height of buildings and other structures. For example, the total displacement of a building from the leveled state before construction began, as observed by SAR30, is the height of the building. Alternatively, SAR30 observation results can be used to detect changes in buildings, such as the construction of a building on vacant land.

[0188] In some areas, there are restrictions on the height of buildings, such as the height of buildings in a certain area around an airport.

[0189] On the other hand, the deterioration determination device 10 can determine the deterioration of the runways, taxiways, aprons, and the like of an airport as the deterioration of structures.

[0190] Therefore, for example, the deterioration determination system 50 may output a combination of the determination result of the deterioration determination device 10 for the runway, etc. and the change in height of buildings around the airport (or the height of the buildings) measured by the SAR 30. For example, the deterioration determination system 50 may display, on the display device 40 or a device not shown, a combination of the determination result of the deterioration determination device 10 for the runway, etc. and the change in height of buildings around the airport (or the height of the buildings) extracted using the observation results of the SAR 30. Furthermore, the deterioration determination system 50 may display new buildings around the airport.

[0191] In this case, users can grasp the deterioration state of the airport's runways and other areas, as well as the displacement (or height) of buildings in the area surrounding the airport.

[0192] <Second embodiment> The deterioration determining device 10 according to the second embodiment is the same as the deterioration determining device 10 according to the first embodiment, except for the operation of the determining unit 130.

[0193] Therefore, the description of the configuration and operation that are the same as those of the first embodiment will be omitted, and the configuration and operation that are unique to the second embodiment will be described.

[0194] Infrastructure structures are generally large in scale, so it is desirable to limit the scope of assessment of deterioration in the management of such structures.

[0195] It is also estimated that deterioration of the object progresses more quickly in areas where the ground surface displacement is large than in areas where the ground surface displacement is small.

[0196] Therefore, the determination unit 130 according to the second embodiment first extracts a range in which the displacement is greater than the displacement threshold value using the ground surface displacement data, and then determines the deterioration of the structure using the deterioration data and ground surface displacement data included in the extracted range.

[0197] [Effect description] Next, the effects of the deterioration determining device 10 according to the second embodiment will be described.

[0198] The deterioration determining device 10 according to the second embodiment can reduce the load of determination in addition to the effects of the first embodiment.

[0199] The reasons are as follows:

[0200] The determination unit 130 according to the second embodiment extracts an area where the displacement of the ground surface is large using the ground surface displacement data, and determines deterioration in the extracted area in order to limit the area in which deterioration is determined.

[0201] The techniques described in Patent Documents 1 and 2 cannot achieve the above-mentioned effects because they determine deterioration based on the uneven shape of the surface of a structure.

[0202] [Variations] The deterioration determination device 10 may use the ground surface displacement data to control the acquisition of sensor information in the drive recorder 20 that acquires sensor information used for the deterioration data.

[0203] For example, the deterioration determination device 10 may instruct the drive recorder 20 to collect deterioration data in a range in which the displacement in the ground displacement data is larger than the displacement threshold value (hereinafter, "large displacement range").

[0204] Alternatively, the deterioration determining device 10 may instruct the drive recorder 20 to change the type of data to be acquired for determining deterioration in the large displacement range.

[0205] For example, the deterioration determination device 10 may instruct the drive recorder 20 to increase the frame rate of images in the large displacement range. Alternatively, the deterioration determination device 10 may instruct the drive recorder 20 to normally capture still images and to capture videos in the large displacement range. In these cases, the deterioration determination device 10 can acquire more detailed information in the large displacement range as sensor information for generating deterioration data.

[0206] <Third embodiment> The deterioration determining device 10 according to the third embodiment is the same as the deterioration determining device 10 according to the first embodiment, except for the operation of the determining unit 130.

[0207] Therefore, the description of the configuration and operation that are the same as those of the first embodiment will be omitted, and the configuration and operation that are unique to the third embodiment will be described.

[0208] Infrastructure structures are generally large in scale, so it is desirable to limit the scope of assessment of deterioration in the management of such structures.

[0209] Furthermore, points that are judged to be deteriorated in the deterioration data are candidates for repair, but repairing structures requires a lot of money and time.

[0210] Therefore, there is a need to provide information related to repair priorities.

[0211] For example, deteriorated parts include parts where the deterioration has progressed deep and urgently requires repair, and parts where the deterioration is superficial and some time can pass before repair.

[0212] In this way, it is desirable to be able to determine the priority of repairs regarding deterioration.

[0213] Therefore, the determination unit 130 according to the third embodiment first uses the deterioration data to extract points where the deterioration level is greater than the deterioration threshold (i.e., points that require repair).Then, as in the first embodiment, the determination unit 130 determines the deterioration of the points using the deterioration data and ground displacement data at the points.

[0214] In the third embodiment, the SAR 30 may determine the displacement in the ground surface displacement data in detail in a range where the degree of degradation is greater than the degradation threshold value.

[0215] [Effect description] Next, the effects of the deterioration determining device 10 according to the third embodiment will be described.

[0216] The deterioration determining device 10 according to the third embodiment can reduce the load of determination in addition to the effects of the first embodiment.

[0217] The reasons are as follows:

[0218] The determination unit 130 according to the third embodiment extracts points of deterioration using the deterioration data and determines deterioration at the extracted points. That is, the determination unit 130 according to the third embodiment first extracts points where deterioration is occurring using the deterioration data. Then, the determination unit 130 determines deterioration at the extracted points using the ground surface displacement data. In this way, the determination unit 130 reduces the number of points of deterioration to be determined.

[0219] <Fourth embodiment> The deterioration determining device 10 may use an external storage device (not shown) as the storage unit 120.

[0220] Alternatively, the acquisition unit 110 may acquire the deterioration data and ground surface displacement data generated by a device having similar functions to the deterioration determination unit 150 and the image analysis unit 160. In other words, the deterioration determination device 10 may not include the deterioration determination unit 150 or the image analysis unit 160, but may acquire the deterioration data and ground surface displacement data from a device having similar functions.

[0221] Then, the determining unit 130 may acquire the deterioration data and the ground surface displacement data from the acquiring unit 110.

[0222] Next, an overview of the deterioration determining device 10 will be described with reference to the drawings.

[0223] FIG. 12 is a block diagram showing the configuration of a deterioration determination device 11, which is an example of the outline of the deterioration determination device 10. As shown in FIG.

[0224] The deterioration determination device 11 includes an acquisition unit 110, a determination unit 130, and an output unit 140. The acquisition unit 110 acquires a diagnosis result of a first deterioration of a structure (e.g., deterioration data) and a determination result of a displacement of the ground surface including the structure (e.g., ground surface displacement data). The determination unit 130 determines a second deterioration of the structure using the diagnosis result of the first deterioration and the determination result of the displacement of the ground surface. The output unit 140 outputs the second deterioration and the location of the second deterioration.

[0225] Each component of the deterioration determination device 11 operates in the same manner as each corresponding component of the deterioration determination device 10.

[0226] The deterioration determination device 11 configured in this manner can achieve the same effects as the deterioration determination device 10.

[0227] The reason is that each component of the deterioration determination device 11 operates in the same manner as the corresponding component in the deterioration determination device 10.

[0228] The deterioration determination device 11 is the minimum configuration of the deterioration determination device 10.

[0229] <Hardware configuration> Next, the hardware configuration of the deterioration determination devices 10 and 11 will be described using the deterioration determination device 10.

[0230] Each component of the deterioration determination device 10 may be configured as a hardware circuit.

[0231] Alternatively, each component of the deterioration determination device 10 may be configured using a plurality of devices connected via a network. For example, the deterioration determination device 10 may be configured using cloud computing.

[0232] Alternatively, in the deterioration determining device 10, the multiple components may be configured as a single piece of hardware.

[0233] Alternatively, the deterioration determination device 10 may be realized as a computer device including a CPU (Central Processing Unit), a ROM (Read Only Memory), and a RAM (Random Access Memory).The deterioration determination device 10 may be realized as a computer device including a network interface circuit (NIC) in addition to the above configuration.

[0234] FIG. 13 is a block diagram showing an example of the hardware configuration of the deterioration determining device 10. As shown in FIG.

[0235] The deterioration determination device 10 includes a CPU 610, a ROM 620, a RAM 630, a storage device 640, and a NIC 650, and constitutes a computer device.

[0236] The CPU 610 reads a program from the ROM 620 and / or the storage device 640. Then, the CPU 610 controls the RAM 630, the storage device 640, the IOC 650, and the NIC 650 based on the read program. The computer including the CPU 610 controls these components and realizes the functions of the acquisition unit 110, the determination unit 130, the output unit 140, the deterioration determination unit 150, and the image analysis unit 160 shown in FIG. 1 .

[0237] When implementing each function, the CPU 610 may use the RAM 630 or the storage device 640 as a temporary storage medium for a program.

[0238] Furthermore, the CPU 610 may read a program contained in a computer-readable recording medium 690 using a recording medium reading device (not shown). Alternatively, the CPU 610 may receive a program from an external device (not shown) via the NIC 650, store the program in the RAM 630 or the storage device 640, and operate based on the stored program.

[0239] The ROM 620 stores fixed data and programs executed by the CPU 610. The ROM 620 is, for example, a P-ROM (Programmable ROM) or a flash ROM.

[0240] The RAM 630 temporarily stores programs and data executed by the CPU 610. The RAM 630 is, for example, a D-RAM (Dynamic-RAM).

[0241] The storage device 640 stores data and programs that are to be saved over the long term by the deterioration determination device 10. The storage device 640 constitutes the storage unit 120. The storage device 640 may also operate as a temporary storage device for the CPU 610. The storage device 640 is, for example, a hard disk device, a magneto-optical disk device, an SSD (Solid State Drive), or a disk array device.

[0242] The ROM 620 and the storage device 640 are non-volatile (non-transitory) recording media. On the other hand, the RAM 630 is a volatile (transitory) recording media. The CPU 610 can operate based on a program stored in the ROM 620, the storage device 640, or the RAM 630. In other words, the CPU 610 can operate using a non-volatile recording medium or a volatile recording medium.

[0243] The NIC 650 relays data exchange with external devices such as the display device 40 via a network. The NIC 650 is, for example, a LAN (Local Area Network) card. Furthermore, the NIC 650 is not limited to being wired, and may be wireless.

[0244] The deterioration determination device 10 configured in this manner can achieve the same effects as the deterioration determination device 10 of FIG.

[0245] The reason is that the CPU 610 of the deterioration determination device 10 of FIG. 13 can realize the same functions as the deterioration determination device 10 of FIG. 1 based on a program.

[0246] Some or all of the above-described embodiments can be described as, but are not limited to, the following supplementary notes.

[0247] (Appendix 1) an acquisition means for acquiring a first deterioration diagnosis result of the structure and a determination result of displacement of the ground surface including the structure; a determination means for determining a second deterioration of the structure using the diagnosis result of the first deterioration and the determination result of the displacement of the ground surface; an output means for outputting the second deterioration and the position of the second deterioration; A deterioration determination device including:

[0248] (Appendix 2) Either or both of the first deterioration diagnosis result and the ground surface displacement determination result are time-series data; 2. The deterioration determination device according to claim 1.

[0249] (Appendix 3) the first deterioration diagnosis result includes deterioration of the surface layer of the structure and its location; The determination result of the displacement of the ground surface includes the displacement of the ground surface including the structure and the position of the displacement. 3. The deterioration determination device according to claim 1 or 2.

[0250] (Appendix 4) The determination means extracts a range in which the displacement included in the determination result of the displacement of the ground surface is greater than a displacement threshold, and determines the second deterioration using the diagnosis result of the first deterioration included in the extracted range and the determination result of the displacement of the ground surface. 4. The deterioration determination device according to claim 3.

[0251] (Appendix 5) The determination means extracts points where the degree of deterioration included in the first deterioration diagnosis result is greater than a deterioration threshold value, and determines second deterioration using the first deterioration diagnosis result at the extracted points and the determination result of the displacement of the ground surface. 4. The deterioration determination device according to claim 3.

[0252] (Appendix 6) a deterioration determination means for generating a first deterioration diagnosis result using sensor information related to the surface layer of the structure acquired by a terminal device mounted on the mobile body; Image analysis means for generating determination results of ground surface displacement using synthetic aperture radar observation results. The deterioration determination device according to any one of appendices 1 to 5 further includes:

[0253] (Appendix 7) A deterioration determination device according to Supplementary Note 6; a terminal device mounted on the mobile object that transmits a first deterioration diagnosis result to the deterioration determination device; A synthetic aperture radar that transmits the results of the displacement of the ground surface, including the structure, to the deterioration determination device. a display device that acquires the second deterioration and the position of the second deterioration from the deterioration determination device and displays the second deterioration in association with the position of the second deterioration; A deterioration determination system including:

[0254] (Appendix 8) obtaining a first deterioration diagnosis result of the structure and a determination result of displacement of the ground surface including the structure; determining a second deterioration of the structure using the diagnosis result of the first deterioration and the determination result of the displacement of the ground surface; Outputting the second degradation and the position of the second degradation Deterioration judgment method.

[0255] (Appendix 9) Either or both of the first deterioration diagnosis result and the ground surface displacement determination result are time-series data; A deterioration determination method as described in Appendix 8.

[0256] (Appendix 10) the first deterioration diagnosis result includes deterioration of the surface layer of the structure and its location; The determination result of the displacement of the ground surface includes the displacement of the ground surface including the structure and the position of the displacement. 10. A deterioration determination method according to claim 8 or 9.

[0257] (Appendix 11) A range in which the displacement included in the determination result of the displacement of the ground surface is greater than a displacement threshold is extracted from the determination result of the displacement of the ground surface, and the diagnosis result of the first deterioration included in the extracted range and the determination result of the displacement of the ground surface are used to determine the second deterioration. 11. A method for determining deterioration as described in Appendix 10.

[0258] (Appendix 12) In the first deterioration diagnosis result, points where the degree of deterioration included in the first deterioration diagnosis result is greater than a deterioration threshold are extracted, and second deterioration is determined using the first deterioration diagnosis result at the extracted points and the determination result of the displacement of the ground surface. 11. A method for determining deterioration as described in Appendix 10.

[0259] (Appendix 13) generating a first deterioration diagnosis result using sensor information related to the surface layer of the structure acquired by a terminal device mounted on the mobile body; Generate a determination of ground displacement using synthetic aperture radar observations A deterioration determination method according to any one of appendixes 8 to 12.

[0260] (Appendix 14) a deterioration determination device that executes the deterioration determination method described in Supplementary Note 13; a terminal device mounted on the mobile object transmits a first deterioration diagnosis result to the deterioration determination device; The synthetic aperture radar transmits the results of the determination of the displacement of the ground surface, including the structure, to the deterioration determination device, The display device acquires the second deterioration and the position of the second deterioration from the deterioration determination device, and displays the second deterioration in association with the position of the second deterioration. Deterioration judgment method.

[0261] (Appendix 15) A process of obtaining a diagnosis result of a first deterioration of the structure and a determination result of a displacement of the ground surface including the structure; a process of determining a second deterioration of the structure using the diagnosis result of the first deterioration and the determination result of the displacement of the ground surface; a process of outputting the second degradation and the position of the second degradation; A recording medium that records a program that causes a computer to execute the above.

[0262] (Appendix 16) Either or both of the first deterioration diagnosis result and the ground surface displacement determination result are time-series data; 16. A recording medium according to claim 15.

[0263] (Appendix 17) the first deterioration diagnosis result includes deterioration of the surface layer of the structure and its location; The determination result of the displacement of the ground surface includes the displacement of the ground surface including the structure and the position of the displacement. 17. A recording medium according to claim 15 or 16.

[0264] (Appendix 18) A process of extracting a range in which the displacement included in the determination result of the displacement of the ground surface is greater than a displacement threshold, and determining the second deterioration using the diagnosis result of the first deterioration included in the extracted range and the determination result of the displacement of the ground surface. 18. The recording medium according to claim 17, which causes a computer to execute the above.

[0265] (Appendix 19) A process of extracting points where the degree of deterioration included in the first deterioration diagnosis result is greater than a deterioration threshold, and determining whether a second deterioration has occurred using the first deterioration diagnosis result at the extracted points and the determination result of the displacement of the ground surface. 18. The recording medium according to claim 17, which causes a computer to execute the above.

[0266] (Appendix 20) generating a first deterioration diagnosis result using sensor information related to the surface layer of the structure acquired by a terminal device mounted on the mobile body; Processing to generate a determination result of the displacement of the ground surface using the observation results of the synthetic aperture radar. 20. The recording medium according to any one of appendices 15 to 19, further comprising a computer-implemented program.

[0267] Although the present invention has been described above with reference to the embodiments, the present invention is not limited to the above embodiments. Various modifications that can be understood by those skilled in the art can be made to the configuration and details of the present invention within the scope of the present invention. [Explanation of symbols]

[0268] 10 Deterioration determination device 11 Deterioration determination device 20 Drive Recorder 30 SAR 40 Display device 50 Deterioration Judgment System 110 Acquisition Department 120 Preservation Department 130 Judgment section 140 Output section 150 Deterioration judgment section 160 Image Analysis Unit 610 CPU 620 ROM 630 RAM 640 Storage device 650 NIC 690 Recording Media

Claims

1. an acquisition means for acquiring a diagnosis result of a first deterioration, which is deterioration of a surface layer of a structure, and a determination result of a displacement of the ground surface including the structure; a determination means for determining second deterioration, which is deterioration from deep layers to surface layers of the structure, using the diagnosis result of the first deterioration and the determination result of the displacement of the ground surface; an output means for outputting the first deterioration diagnosis result, the determination result of the ground surface displacement, and the determination result of the second deterioration so as to display them on a map including the structure; A deterioration determination device including:

2. the first deterioration diagnosis result includes deterioration of a surface layer of the structure and its location, the determination result of the displacement of the ground surface includes a displacement of the ground surface including the structure and a position of the displacement; the second deterioration determination result includes deterioration from deep layers to surface layers of the structure and its location; The deterioration determination device according to claim 1 .

3. The structure is a road, The first deterioration is deterioration of a pavement surface of a road, The second type of deterioration is deterioration from the road ground to the road pavement surface. The deterioration determination device according to claim 1 or 2.

4. The determination means extracts a range in which the displacement included in the determination result of the displacement of the ground surface is greater than a displacement threshold, and determines the second deterioration using the diagnosis result of the first deterioration included in the extracted range and the determination result of the displacement of the ground surface. The deterioration determination device according to claim 3 .

5. The determination means extracts a point where the degree of deterioration included in the first deterioration diagnosis result is greater than a deterioration threshold value, and determines the second deterioration using the first deterioration diagnosis result at the extracted point and the determination result of the ground surface displacement. The deterioration determination device according to claim 3 .

6. The output means displaying the first deterioration diagnosis result and the second deterioration determination result superimposed on roads separated at predetermined intervals on the map, Based on the determination result of the ground surface displacement, information indicating areas where the ground surface displacement is large is output to be superimposed on the map. The deterioration determination device according to any one of claims 1 to 5.

7. a deterioration determination means for generating a diagnosis result of the first deterioration using sensor information related to the surface layer of the structure acquired by a terminal device mounted on a mobile body; Image analysis means for generating a determination result of the displacement of the ground surface using the observation results of the synthetic aperture radar; The deterioration determination device according to claim 1 , further comprising:

8. A deterioration determination device according to claim 7, the terminal device mounted on a moving object that transmits the diagnosis result of the first deterioration to the deterioration determination device; the synthetic aperture radar transmitting the determination result of the displacement of the ground surface including the structure to the deterioration determination device; a display device that acquires the second deterioration and the position of the second deterioration from the deterioration determination device and displays the second deterioration in association with the position of the second deterioration; A deterioration determination system including:

9. A computer comprising: obtaining a diagnosis result of a first deterioration, which is deterioration of a surface layer of a structure, and a determination result of a displacement of the ground surface including the structure; determining a second deterioration, which is deterioration from a deep layer to a surface layer of the structure, using the diagnosis result of the first deterioration and the determination result of the displacement of the ground surface; The first deterioration diagnosis result, the determination result of the ground surface displacement, and the second deterioration determination result are output to be displayed on a map including the structure. Deterioration judgment method.

10. A process of acquiring a diagnosis result of a first deterioration, which is deterioration of a surface layer of a structure, and a determination result of a displacement of the ground surface including the structure; a process of determining second deterioration, which is deterioration from deep layers to surface layers of the structure, using the diagnosis result of the first deterioration and the determination result of the displacement of the ground surface; a process of outputting the first deterioration diagnosis result, the determination result of the ground surface displacement, and the determination result of the second deterioration so as to display them on a map including the structure; A program that causes a computer to execute the following.

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