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 large 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 time and money.

[0004] In view of this, devices have been proposed that assist or improve the efficiency of measuring 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 by using the frequency of acceleration measurements at deterioration candidate 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) during a measurement period and changes in traffic volume. [Prior art documents] [Patent documents]

[0007] [Patent Document 1] JP 2013-140448 A [Patent Document 2] JP 2019-185443 A 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. In addition, infrastructure structures are generally quite large relative to vehicles. Therefore, it is desirable to use information related to changes in a wider range in addition to the measurement results of deterioration in individual parts, such as vehicle passing points on the road surface, in order to determine the deterioration of the structure.

[0009] In addition, 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 serves as the foundation for a structure such as a paved road, deterioration associated with the subsidence may occur in the structure such as the paved road.

[0010] The technologies described in Patent Documents 1 and 2 are technologies that judge deterioration based on the unevenness of the road surface at each point where a vehicle passes. Therefore, the technologies described in Patent Documents 1 and 2 can execute deterioration judgment based on the unevenness of the surface of a structure, but cannot execute judgment using the displacement of the ground surface that is the foundation of the road.

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

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

[0013] According to one embodiment of the present invention, a deterioration determination device includes: an acquisition means for acquiring 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 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 a position of the second deterioration.

[0014] In one embodiment of the present invention, a deterioration determination system includes: an acquisition means for acquiring 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 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 a 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 moving body; An 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 moving object for transmitting 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 display device acquires the second deterioration and the position of the second deterioration from the deterioration determining device, and displays the second deterioration in association with the position of the second deterioration.

[0015] A degradation determination method according to one embodiment of the present invention includes: 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; 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 embodiment of the present invention, the program comprises: A process of acquiring 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; outputting the second deterioration and a position of the second deterioration; to be executed by the computer. Effect of the Invention

[0017] According to the present invention, it is possible to obtain an effect of improving the accuracy of determining the deterioration of a structure. [Brief description 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. [Diagram 2] FIG. 2 is a diagram illustrating an example of a determination made by the determining unit. [Diagram 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. [Diagram 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 flow chart showing an example of the operation of the deterioration determining device according to the first embodiment. [Figure 12] FIG. 12 is a block diagram showing an outline of the configuration of the deterioration determining 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 PREFERRED EMBODIMENTS

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

[0020] Each drawing is for explaining an embodiment of the present invention. However, the embodiment of the present invention is not limited to the description in each drawing. Also, the same numbers are given to similar configurations in each drawing, and repeated explanations may be omitted. Also, in the drawings used in the following explanation, in the explanation of the embodiment of the present invention, the description of the configuration of the part not related to solving the problem of the present invention may be omitted and may not be illustrated.

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

[0022] "Sensor information" is information acquired using a specified sensor to determine deterioration in a portion of a structure (e.g., a road, bridge, ramp, embankment, pier, revetment, or runway) that is the subject of the determination. Each embodiment uses, as the sensor information, information related to the structure acquired using a specified sensor (e.g., an accelerometer or camera) equipped on 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 determination 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, as determined using sensor information.

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

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

[0026] For example, when the "crack rate" of the road surface is used as the deterioration degree, the deterioration degree value ranges from 0.0 to 1.0 (0% to 100%).

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

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

[0029] The rutting depth is the height from the rut to the protrusion in 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 equal to or greater than 0 (units are mm / m or m / km).

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

[0032] When the Boeing Bump Index (BBI) is used as the deterioration level, the deterioration level value is a rational number (unit is 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 values ​​of the deterioration degree is arbitrary, and the user of each embodiment may appropriately select a deterioration degree corresponding to the deterioration of the structure to be judged.

[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 in value when the deterioration occurs. However, the deterioration degree may be a value that decreases in value when the deterioration occurs, depending on the process using the deterioration degree.

[0036] The "deterioration rate" is the degree 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 judgment. 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, as a diagnosis result of deterioration, a deterioration degree corresponding to a plurality of deteriorations may be used. For example, in each embodiment, when the deterioration is cracks and ruts occurring in a structure, the deterioration degree is, for example, a crack rate and a rutting amount. In this case, in each embodiment, in addition to the deterioration degree for each deterioration, a deterioration speed may be used.

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

[0040] Here, the "deterioration data" refers to data related to the diagnosis result of the deterioration of a structure. For example, the deterioration data is data including the type of deterioration (cracks, ruts, etc.) determined based on the state of the surface layer 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 deterioration data may be data determined using information other than the images captured by the drive recorder. For example, the deterioration data may be data determined using an accelerometer mounted on the vehicle.

[0044] In the following description, the deterioration level and the position of a crack determined using an image 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, the deterioration of the structure is judged using the deterioration data (data related to the diagnosis result of the first deterioration of the structure). The deterioration of the structure judged using the deterioration data is called "second deterioration."

[0046] The "surface layer" of a structure refers to a range where deterioration can be confirmed from outside the structure, for example, a portion including the surface and a predetermined range close to the surface. For example, the surface layer of a structure refers to a portion including the surface and a range from the surface to a predetermined depth. Alternatively, the surface layer of a structure refers to a 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 other than the surface layer will be referred to as the "deep layer."

[0048] It should be noted that there are models of drive recorders that can acquire data other than the position and images. For example, there are models of drive recorders that 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, obtaining 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 a satellite. Therefore, SAR uses an antenna with a small actual aperture length to transmit and receive radio waves while flying (i.e., artificially "synthesizes" the "aperture"), thereby increasing the resolution in the direction of travel (i.e., creating 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 "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 may be any sign. The sign may be positive when the subsidence increases. Alternatively, the sign may be positive when the uplift increases. Alternatively, the displacement may be an absolute value.

[0054] "Ground surface displacement rate" refers to the degree of change over time in ground surface displacement (subsidence or uplift) (for example, mm / year). 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 result of determining the ground surface including structures. For example, the ground surface displacement data is data on the displacement of the ground surface, such as subsidence and uplift. For example, the ground surface displacement data is data including the displacement of the ground surface measured using interferometric SAR and the position of the displacement.

[0056] The ground surface displacement data may be data measured using a technique other than interferometric SAR, so long as it is data that measures 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 is used as an example of ground surface displacement data.

[0057] In particular, the Interferometric SAR measures the displacement of the distance to a structure on the ground (the ground supporting the foundation of the structure). However, the deformation of a structure is generally smaller than the change in the ground. In addition, the Interferometric SAR measures the displacement of the ground surface using a noise removal technique based on various factors. Therefore, each embodiment operates by regarding the displacement of the distance measured using the Interferometric SAR as the displacement of the surface of the ground (i.e., the ground 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 determining system 50 including a deterioration determining 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] Each device included in the deterioration determination system 50 is 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 (e.g., a vehicle) and acquires sensor information (e.g., a surface image of the structure (e.g., an image of the road surface)) related to the structure to be judged (e.g., a road, a bridge, a ramp, a levee, a pier, a revetment, or a runway). Then, the drive recorder 20 transmits the acquired sensor information to the deterioration determination device 10.

[0064] The drive recorder 20 may be a terminal device capable of acquiring images and acceleration. The moving body may be any device capable of mounting a terminal device. For example, the moving body may be a vehicle, a motorcycle, or a drone. Alternatively, a person may carry a 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 result 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] Further, the display format of the display device 40 is arbitrary. The creator or user of the degradation determination system 50 may appropriately select the display format 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 result of the determination to the display device 40 or a device not shown. The deterioration determination device 10 may store the result of the determination.

[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 deterioration level of the surface layer of each part of the structure (an example of a first deterioration) by using the sensor information acquired from the drive recorder 20. Then, the deterioration determination unit 150 generates deterioration data including at least the calculated deterioration level and its position. In other words, the deterioration determination unit 150 generates the deterioration data by using the 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, the type of deterioration, an 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 obtained 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 the degradation data and the ground surface displacement data. Then, the acquisition unit 110 stores the acquired degradation data and the ground surface displacement data in the storage unit 120. Note that the timing at which the acquisition unit 110 acquires the degradation data and the ground surface displacement data is arbitrary. Also, the frequency at which the acquisition unit 110 acquires the degradation data may be different from the frequency at which the acquisition unit 110 acquires the ground surface displacement data.

[0075] Furthermore, the number and amount of degradation data acquired by the acquiring 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 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. That is, 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 deterioration data and the ground 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 plan view or a structural drawing of the structure to be determined.

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

[0084] Then, the determination unit 130 determines the deterioration (second deterioration) of the structure to be determined by 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. The determination unit 130 then uses the positions included in each data to associate the first deterioration diagnosis result included in the deterioration data with the displacement included in the ground displacement data. The determination unit 130 then determines the deterioration (second deterioration) of the structure using the first deterioration diagnosis result and the displacement of the ground displacement data.

[0086] In addition, the determination unit 130 may include the position of the determined part in the determination result in addition to the information indicating the second deterioration. In addition, when 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, when 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 the surface layer of road pavement (hereinafter referred to as the "first deterioration state").

[0091] However, when land subsidence occurs, cracks may develop in the road pavement not in the surface layer, but in the parts closer to the ground (deep layers). In this case, the cracks spread from the deep layers to the surface layer. In other words, when cracks develop in the surface layer due to land subsidence, the cracks spread from the deep layers 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 the bottom to the top (hereinafter referred to as the "second deterioration state").

[0092] Alternatively, if a structure straddles an area where land subsidence has occurred and an area where land subsidence has not occurred, stress is applied from the surface to the deeper layers of the structure at the boundary between the two areas. As a result, such a structure is prone to cracks at the boundary, leading to the second deterioration state.

[0093] The techniques described in Patent Documents 1 and 2 make a judgment using the uneven shape of the road surface, and therefore cannot distinguish between the first deterioration state and the second deterioration state described above.

[0094] However, in making the judgment, the judgment 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 judged (deterioration data). Therefore, the judgment unit 130 can distinguish between the above-mentioned first deterioration state and the second deterioration state. In this way, the judgment unit 130 can judge deterioration more appropriately than the techniques described in Patent Documents 1 and 2. In other words, the judgment unit 130 can improve the accuracy of judging the deterioration of a structure compared to the techniques described in Patent Documents 1 and 2.

[0095] The method of judgment in the judgment unit 130 is arbitrary. The judgment in the judgment unit 130 may be determined based on findings on the structure (for example, a history of past deterioration judgments). The judgment unit 130 may judge 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 determining unit 130 compares the deterioration level included in the deterioration data and the ground surface displacement included 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 determining unit 130 determines four types of deterioration (second deterioration) levels for the portion of the target structure to be determined.

[0098] The degree of deterioration and displacement being "small" each include the case where there is no deterioration or displacement.

[0099] For a portion where the degree of deterioration is small and the ground displacement is small, the determining unit 130 determines it to be "Level 1." A portion determined to be Level 1 is either in a sound state or has deteriorated to the extent that it does not interfere with operation.

[0100] For a portion where the degree of deterioration is small and the ground surface displacement is large, the determining unit 130 determines it as "Level 2." A portion determined as Level 2 is a portion where the deterioration of the surface layer is small, 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 deterioration of the surface layer is small, but deterioration may have occurred in a deeper layer (for example, a deep layer 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 the portion as Level 3. In a portion determined as Level 3, the displacement of the ground that is 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 parts with a high degree of deterioration and large ground displacement, the determining unit 130 determines the level as level 4. Parts determined as level 4 have not only surface layer deterioration, but also large displacement of the ground that serves as the foundation of the structure. Therefore, parts determined as level 4 are parts 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 techniques described in Patent Documents 1 and 2 judge deterioration based only on the unevenness of the pavement surface. Therefore, the techniques described in Patent Documents 1 and 2 cannot distinguish between the above levels 1 and 2, or between 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 displacement data in chronological order, the judgment unit 130 may predict the change in deterioration over time (e.g., aging) using the change in deterioration and / or ground displacement over time (e.g., deterioration rate and / or ground displacement rate).

[0107] The determination unit 130 may use different methods or prediction formulas for the prediction using the deterioration 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 result 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, 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 displacement of the ground surface at the point where deterioration is predicted. For example, the determination unit 130 may use, as a prediction formula to be used for a point where the ground surface displacement is large, a prediction formula in which deterioration progresses faster 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 an AI for the prediction. In this case, the determination unit 130 may use different AI for the prediction using the degradation data and the 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 the granularity.

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

[0114] Then, the determining section 130 sends the determination result (including the second deterioration) to the output section 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. When 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 by 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] The 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, Fig. 3 shows a road including an intersection as an example of the road.

[0121] Fig. 4 is a diagram showing an example of a 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 that shown in Fig. 4.

[0122] In Fig. 4, the structure to be judged is the road shown in Fig. 3. The levels in Fig. 4 are the levels described with reference to Fig. 2. In Fig. 4, the road is divided into predetermined parts (thick rectangles), and the level as the judgment result is displayed for each part.

[0123] Note that the portion with a small degree of degradation is a portion where no degradation is found. Therefore, the display device 40 may omit displaying the portion with a small degree of degradation and display the portion where degradation is found (for example, the portion with a large 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 structure manager 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 for checking the deterioration of a structure is limited, so it is desirable to provide a system that prioritizes the 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 there is a higher possibility of deterioration progressing in parts judged as Level 2 than in parts judged as Level 1. Therefore, for example, the manager of the structure can appropriately set the frequency of future inspections of parts judged as Level 2 using the results of the Level 1 and 2 assessments, such as by increasing the frequency of inspections of parts judged as Level 2 more than parts judged as Level 1.

[0129] Furthermore, 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 would involve repairing everything from the surface to the deeper layers (for example, the entire pavement of a road).

[0131] It is predicted that the deterioration will progress faster in the parts judged as level 4 than in the parts judged as level 3. Therefore, even if the parts judged as level 4 do not require immediate repair, the user may increase the priority of the inspection, for example by checking the parts judged as level 4 more frequently than the parts judged as level 3.

[0132] The man-hours required to repair the deterioration of a structure are limited. In addition, the details of repairs for the object of repair are necessary information for planning the repair. Therefore, it is desirable to provide not only the location where repairs are required, but also the details of the necessary repairs.

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

[0134] For example, a structure manager can use the level 3 and 4 assessment results to appropriately plan future repairs for 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 display. Fig. 6 shows the location of the deterioration in more detail than Fig. 4 as an enlarged view. Furthermore, Fig. 6 shows the degree of deterioration according to its level (black circles indicate high deterioration and diagonal lines indicate medium deterioration). Note that Fig. 6 omits the display of low deterioration.

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

[0138] Fig. 7 is a diagram showing an example of highlighting. In Fig. 7, the areas determined to be cracks are surrounded by a square in the enlarged view as the highlighting. Furthermore, Fig. 7 shows cracks in each area as an example of the 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 the deterioration determination result by the deterioration determination device 10 (for example, the first deterioration diagnosis result, the second deterioration, the determined deterioration level, and the displacement of the ground surface (subsidence and / or uplift)) on the image. Alternatively, the display device 40 may highlight the position 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 (eg, a menu) for selecting a display.

[0144] FIG. 10 shows an example of a menu for selecting the display. FIG. 10 displays, as an example of the menu, 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 display (e.g., markers) and the display of ground displacement.

[0145] However, these figures are merely for the purpose of explaining examples of displays, and displays on 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 flow chart 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 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 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 position of the second deterioration.

[0159] Deterioration does not necessarily begin at the surface of a structure (eg, 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 occurs over a fairly wide area based on changes in the underground structure of the ground (e.g., depletion of groundwater). When land subsidence occurs, structures based on that ground (e.g., roads) deteriorate due to the subsidence of the ground.

[0161] When land subsidence occurs in a certain area, the road in the affected area will deform downward relative to the surrounding roads. 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). Therefore, 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 (e.g., displacement of the ground surface on which the structure rests) such as land subsidence.

[0163] Therefore, based on the above configuration, the deterioration determination device 10 determines the deterioration of a structure by using the determination result of the displacement of the ground surface including the structure (ground surface displacement data) in addition to the diagnosis result of 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 the determination of the deterioration of a structure compared to the case where the 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 layer of the structure acquired by a terminal device mounted on the mobile body. The image analysis unit 160 generates ground surface displacement data using observation results of a synthetic aperture radar (SAR). Therefore, the deterioration determination device 10 can realize the determination of 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 a user with a display of the results of the determination made by the deterioration determination device 10. Therefore, the user and the like can grasp the deterioration of the structure with improved accuracy of the determination.

[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 ground surface.

[0167] [Example of application] 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 deterioration of a bridge progresses, it becomes more susceptible to deflection and sway.

[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 on which SAR 30 can be measured) 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 the bridge sags, deterioration such as cracks becomes larger and / or more numerous. The deterioration determination device 10 can determine the degree of deterioration such as cracks of the bridge by using the deterioration included in the deterioration data.

[0171] The deterioration determination device 10 determines 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 a case where the deterioration of the surface layer is used for the determination.

[0172] Furthermore, there are models of the drive recorder 20 that can measure 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] When the bridge sways greatly, 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 the deterioration of the bridge including the acceleration. 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 works such as shield construction that create underground spaces, subsidence of the ground surface may occur. However, it is difficult to judge the risk of occurrence of a collapse based on the amount of subsidence alone. However, before a collapse occurs, deterioration such as cracks occurs. In other words, judgments based on the amount of subsidence and deterioration such as cracks can improve the accuracy of judging the risk of a collapse compared to judgments 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. Therefore, the deterioration determination device 10 can more accurately determine the risk of collapse or the like associated with construction work to create an underground space, such as shield construction.

[0176] In addition, when the deterioration data includes an image, the deterioration determination device 10 may output an image of the surface layer together with the determination result. In this case, the user can more appropriately grasp the danger by 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 a problem of lateral flow, which occurs from the side of the embankment, causing pile breakage and road surface cracks.

[0179] The ground surface displacement data includes displacements associated with lateral flow of the revetment.

[0180] However, it is difficult to judge the risk of pile breakage due to lateral flow based on the amount of displacement alone. However, before a pile breaks, 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, judgment based on the amount of displacement of the revetment 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 judging the risk of pile breakage compared to judgment based solely on the amount of displacement of the revetment.

[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 as well, the deterioration determining device 10 may 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 the accuracy of the deterioration determination is low. For example, it is difficult to determine the deterioration in images taken at night. Alternatively, tire marks may hide cracks on runways and roads. Therefore, the deterioration data may not include the deterioration in such parts. For such parts, it is desirable to carry out a visual inspection to determine the deterioration.

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

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

[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 deterioration level of the deterioration data is less than the deterioration threshold value, based on an instruction from a user.

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

[0188] In some areas, there are restrictions on the height of buildings. For example, the height of buildings is restricted within a certain area around an airport.

[0189] On the other hand, the deterioration determination device 10 can determine deterioration of an airport's runway, taxiway, apron, and the like as deterioration of a structure.

[0190] Therefore, for example, the deterioration determination system 50 may output a combination of the determination result of the deterioration determination device 10 for a runway or the like and the change in height of structures around the airport (or the height of the structures) 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 a runway or the like and the change in height of structures around the airport (or the height of the structures) extracted using the observation result of the SAR 30. Furthermore, the deterioration determination system 50 may display new structures around the airport.

[0191] In this case, the user can grasp the deterioration state of the airport's runway, etc., 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 similar to those of the first embodiment will be omitted, and the configuration and operation unique to the second embodiment will be described.

[0194] Infrastructure structures are generally large in scale, so it is desirable to limit the area of ​​the structure that is subject to assessment of deterioration, etc., in managing the structure.

[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. Then, the determination unit 130 determines the deterioration of the structure using the deterioration data and the 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 the deterioration in the extracted area. In this way, the determination unit 130 limits the area where the deterioration is determined.

[0201] It should be noted that 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 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 a 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 obtain 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 similar to those of the first embodiment will be omitted, and the configuration and operation unique to the third embodiment will be described.

[0208] Infrastructure structures are generally large in scale, so it is desirable to limit the area of ​​the structure that is subject to assessment of deterioration, etc., in managing the structure.

[0209] Furthermore, points that are determined to be deteriorated in the deterioration data are candidates for repairs, 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, among deteriorated parts, there are parts where the deterioration has progressed deep down and urgent repairs are required, and parts where the deterioration is only on the surface and it is okay to wait some time before repairs are required.

[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 whose deterioration level is greater than the deterioration threshold (i.e., points that require repair). Then, similar to the first embodiment, the determination unit 130 uses the deterioration data and ground displacement data at the points to determine the deterioration of the points.

[0214] In the third embodiment, the SAR 30 may determine the displacement in the ground displacement data in detail in a range in which the deterioration degree is greater than the deterioration 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 occurs 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 and the image analysis unit 160, and 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 a configuration of a deterioration determining device 11 which is an example of the outline of the deterioration determining 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 the 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 position of the second deterioration.

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

[0226] The deterioration determination device 11 configured in this manner can obtain 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 similar components 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 determining devices 10 and 11 will be described using the deterioration determining device 10.

[0230] Each component of the deterioration determining 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, a plurality of 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 central processing unit (CPU), a read only memory (ROM), and a random access memory (RAM). 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 a hardware configuration of the deterioration determining device 10. As shown in FIG.

[0235] The deterioration determining 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. Then, the computer including the CPU 610 controls these configurations and realizes each function as 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.

[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 recording medium 690 that stores a program in a computer-readable manner, 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 dynamic RAM (D-RAM).

[0241] The storage device 640 stores data and programs that are to be stored for a long period of time 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 medium. 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 the 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 CPU 610 of deterioration determining device 10 in FIG. 13 can realize the same functions as deterioration determining device 10 in FIG. 1 based on a program.

[0246] A part or all of the above-described embodiments can be described as, but is 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 a 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 a position of the second deterioration; A deterioration determination device comprising:

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

[0249] (Appendix 3) 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 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 value, 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 in the first deterioration diagnosis result, and determines the 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 moving 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 any one of claims 1 to 5, further comprising:

[0253] (Appendix 7) A deterioration determination device according to claim 6; A terminal device mounted on the moving object for transmitting 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 a 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 diagnosis result of a first deterioration of the structure and a determination result of a 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 determination result of the ground surface displacement are time-series data; A deterioration determination method as described in Appendix 8.

[0256] (Appendix 10) 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 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 a second deterioration is determined using the diagnosis result of the first deterioration included in the extracted range and the determination result of the displacement of the ground surface. 11. A deterioration determination method as described in appendix 10.

[0258] (Appendix 12) In the first deterioration diagnosis result, points where the deterioration degree included in the first deterioration diagnosis result is greater than a deterioration threshold value are extracted, and second deterioration is judged using the first deterioration diagnosis result at the extracted point and the judgment result of the displacement of the ground surface. 11. The degradation determination method according to claim 10.

[0259] (Appendix 13) generating a first deterioration diagnosis result using sensor information related to a surface layer of the structure acquired by a terminal device mounted on the moving body; Using synthetic aperture radar observations, a determination of the displacement of the earth's surface is generated. A deterioration determination method according to any one of appendix 8 to 12.

[0260] (Appendix 14) A deterioration determination device 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 determining device, and displays the second deterioration in association with the position of the second deterioration. Deterioration judgment method.

[0261] (Appendix 15) A process of acquiring 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; outputting the second deterioration and a position of the second deterioration; A recording medium for recording a program that causes a computer to execute the above.

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

[0263] (Appendix 17) 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 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 value from the determination result of the displacement of the ground surface, and determining a 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 steps.

[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 value in the first deterioration diagnosis result, and determining a second deterioration 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 steps.

[0266] (Appendix 20) A process of generating a first deterioration diagnosis result using sensor information related to a surface layer of the structure acquired by a terminal device mounted on the mobile object; A process to generate a judgment result of the displacement of the ground surface using the observation results of the synthetic aperture radar. 20. A recording medium according to any one of appendices 15 to 19, further comprising a computer readable medium for causing a computer to execute the recording medium.

[0267] Although the present invention has been described above with reference to the embodiment, the present invention is not limited to the above embodiment. 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 650NIC 690 Recording media

Claims

1. An acquisition means for acquiring a diagnosis result of a first deterioration that is deterioration of the surface layer of a structure and a determination result of displacement of the ground surface including the structure; A determination means for determining a second deterioration that is deterioration from the deep layer to the surface layer 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 diagnosis result of the first deterioration, the determination result of the displacement of the ground surface, and the determination result of the second deterioration so as to be displayed on a map including the structure A deterioration determination device including the above.

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

3. The structure is a road, The first deterioration is deterioration in the paving surface of the road, The second deterioration is deterioration from the roadbed of the road to the paving surface of the road 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 larger than a displacement threshold value in the determination result of the displacement of the ground surface, and uses the diagnosis result of the first deterioration and the determination result of the displacement of the ground surface included in the extracted range to determine the second deterioration The deterioration determination device according to claim 3.

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

6. The output means is To superimpose and display the diagnosis result of the first deterioration and the determination result of the second deterioration on the road separated at a predetermined interval in the map, respectively, Output so as to superimpose and display information indicating an area where the displacement of the ground surface is large on the map based on the determination result of the displacement of the ground surface The deterioration determination device according to any one of claims 1 to 5.

7. A deterioration determination means for generating the 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 moving body, and An image analysis means for generating the determination result of the displacement of the ground surface using the observation result of synthetic aperture radar The deterioration determination device according to any one of claims 1 to 6, further comprising

8. The deterioration determination device according to claim 7, The terminal device mounted on the moving body that transmits the diagnosis result of the first deterioration to the deterioration determination device, The synthetic aperture radar that transmits the determination result of the displacement of the ground surface including the structure to the deterioration determination device And 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 Acquires a diagnosis result of a first deterioration that is a deterioration of the surface layer of the structure and a determination result of the displacement of the ground surface including the structure, Using the diagnosis result of the first deterioration and the determination result of the displacement of the ground surface, determines a second deterioration that is a deterioration from the deep layer to the surface layer of the structure, Outputs the diagnosis result of the first deterioration, the determination result of the displacement of the ground surface, and the determination result of the second deterioration so as to be displayed on a map including the structure A deterioration determination method.

10. A process of acquiring a diagnosis result of a first deterioration that is a deterioration of the surface layer of the structure and a determination result of the displacement of the ground surface including the structure, A process of determining a second deterioration that is a deterioration from the deep layer to the surface layer of the structure using the diagnosis result of the first deterioration and the determination result of the displacement of the ground surface, And a process of outputting the diagnosis result of the first deterioration, the determination result of the displacement of the ground surface, and the determination result of the second deterioration so as to be displayed on a map including the structure A program for causing a computer to execute

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