Information processing apparatus, information processing method, and program

Abstract

To enable multiple bridges to be efficiently maintained.SOLUTION: A control unit in an information processing device acquires, from multiple bridges, respective first values regarding the level differences at the joint parts of the bridges. Each first value is acquired by a sensor on a vehicle. Then, the control unit in the information processing device determines the priority order of maintenance of the bridges based on each of the first values of the bridges.SELECTED DRAWING: Figure 7

Description

Technical Field

[0001] The present disclosure relates to an information processing apparatus, an information processing method, and a program.

Background Art

[0002] Patent Document 1 discloses a structure deformation detection system. The structure deformation detection system disclosed in Patent Document 1 includes a vehicle, an axle vibration sensor that detects the vibration of the axle of the vehicle, a storage unit that stores vibration data detected by the axle vibration sensor when the vehicle passes over a structure to be inspected, and a damage determination device that determines the damage state of the structure by analyzing the vibration data. The damage determination device includes data comparison means for comparing the vibration data stored in the storage unit with normal vibration data when the structure is normal, and damage determination means for determining whether damage has occurred to the structure based on the data compared by the data comparison means. Then, the damage determination means determines that damage has occurred to the structure when the difference in the data compared by the data comparison means is equal to or greater than a predetermined value.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] An object of the present disclosure is to enable efficient maintenance of a plurality of bridges.

Means for Solving the Problems

[0005] The information processing apparatus according to the first aspect of the present disclosure obtains, for each of a plurality of bridges, a first value obtained by a sensor included in a vehicle and related to a step of a joint portion in the bridge. Based on the first value of each of the plurality of bridges, determining the priority order of maintenance of the plurality of bridges; It includes a control unit that executes.

[0006] The information processing method according to the second aspect of the present disclosure is An information processing method executed by a computer, Obtaining, for each of the plurality of bridges, a first value acquired by a sensor of a vehicle, the first value being related to the step of a joint portion in a bridge; Based on the first value of each of the plurality of bridges, determining the priority order of maintenance of the plurality of bridges; including.

[0007] The program according to the third aspect of the present disclosure is A program for a computer to execute an information processing method, The information processing method is Obtaining, for each of the plurality of bridges, a first value acquired by a sensor of a vehicle, the first value being related to the step of a joint portion in a bridge; Based on the first value of each of the plurality of bridges, determining the priority order of maintenance of the plurality of bridges; including.

Advantages of the Invention

[0008] According to the present disclosure, efficient maintenance of a plurality of bridges becomes possible.

Brief Description of the Drawings

[0009]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

DETAILED DESCRIPTION OF THE INVENTION

[0010] The information processing apparatus according to the first aspect of the present disclosure is an information processing apparatus that manages a plurality of bridges. Here, among the plurality of bridges, a bridge that is deteriorated compared to other bridges needs to be maintained earlier than the other bridges. Therefore, it is necessary to determine the maintenance priority for the plurality of bridges.

[0011] Therefore, the control unit in the information processing apparatus according to the first aspect of the present disclosure acquires, for each of the plurality of bridges, a first value obtained by a sensor of a vehicle, which is a first value related to the step of the joint portion in the bridge. Here, when the bridge is deteriorated, it is assumed that the step of the joint portion in the bridge becomes large. Therefore, by acquiring the first value related to the step of the joint portion in the bridge, the information processing apparatus can grasp the deterioration state of the bridge. Therefore, the control unit in the information processing apparatus determines the maintenance priority of the plurality of bridges based on the first value of each of the plurality of bridges.

[0012] The information processing apparatus according to the first aspect of the present disclosure determines the maintenance priority of the plurality of bridges. As a result, among the plurality of bridges, it becomes possible to preferentially maintain a bridge that is deteriorated compared to other bridges. In this way, efficient maintenance of the plurality of bridges becomes possible.

[0013] Hereinafter, specific embodiments of the present disclosure will be described with reference to the drawings. The dimensions, materials, shapes, relative arrangements, etc. of the components described in this embodiment are not intended to limit the technical scope of the present disclosure only to these unless otherwise specified.

[0014] <Embodiment> (Overview of the System) The maintenance system 1 in this embodiment will be described with reference to FIGS. 1 and 2. FIG. 1 is a diagram showing the schematic configuration of the maintenance system 1 according to this embodiment. The maintenance system 1 includes a plurality of vehicles 10 and a maintenance server 200. In the maintenance system 1, the plurality of vehicles 10 and the maintenance server 200 are interconnected by a network N1. As the network N1, for example, a WAN (Wide Area Network), which is a worldwide public communication network such as the Internet, or a telephone communication network such as a mobile phone may be adopted.

[0015] (Vehicle) The vehicle 10 is a vehicle having a wheel speed sensor 100. Here, the wheel speed sensor 100 is a sensor that measures the wheel speed of the vehicle 10. The vehicle 10 transmits sensor information including the wheel speed of the vehicle 10 acquired by the wheel speed sensor 100 and the position of the vehicle 10 acquired by the GPS sensor included in the vehicle 10 to the maintenance server 200 via the network N1. At this time, the vehicle 10 repeatedly transmits the sensor information to the maintenance server 200 at a predetermined cycle.

[0016] (Maintenance Server) ​The maintenance server 200 is a server that manages a plurality of bridges. FIG. 2 is a diagram showing an example of the structure of a bridge managed by the maintenance server 200. The bridge shown in FIG. 2 is a bridge supported by two bodies and one pier. Also, in the bridge, between each body and the pier, they are connected by girders. Further, in the bridge, joint portions are formed between the body and the girder and between two girders. The vehicle 10 enters from the road onto the upper surface of the body of the bridge, passes through the joint portion between the body and the girder, and enters the girder. Next, the vehicle 10 passes through the joint portion between the girders and passes through the joint portion between the girder and the body. Then, the vehicle 10 enters from the body of the bridge onto the road. In this way, the vehicle 10 travels through three joint portions in the bridge. Note that the plurality of bridges managed by the maintenance server 200 do not necessarily have the structure shown in FIG. 2 as long as they are bridges having joint portions.

[0017] Here, assume the case where the pier shown in FIG. 2 is deteriorated. In this case, it is assumed that the step of the joint portion becomes larger due to the deterioration and distortion of the girder. Also, it is assumed that the step of the joint portion becomes larger due to the body or the pier sinking into the base portion. In this way, it is assumed that the step of the joint portion in the bridge becomes larger due to the deterioration of the bridge.

[0018] Therefore, the maintenance server 200 grasps the state of the step of the joint portion in the bridge based on the sensor information received from the vehicle 10 that has traveled on the bridge. Thereby, the maintenance server 200 can grasp the state of deterioration of the bridge. Details of the method by which the maintenance server 200 grasps the state of deterioration of the bridge based on the sensor information will be described later.

[0019] The maintenance server 200 includes a computer having a processor 210, a main memory unit 220, an auxiliary storage unit 230, and a communication interface (communication I / F) 240. The processor 210 is, for example, a CPU (Central Processing Unit) or a DSP (Digital Signal Processor). The main memory unit 220 is, for example, a RAM (Random Access Memory). The auxiliary storage unit 230 is, for example, a ROM (Read Only Memory). Also, the auxiliary storage unit 230 is, for example, an HDD (Hard Disk Drive), or a disk recording medium such as a CD-ROM, a DVD disk, or a Blu-ray disk. Also, the auxiliary storage unit 230 may be a removable medium (portable storage medium). Here, examples of the removable medium include a USB memory or an SD card. The communication I / F 240 is, for example, a LAN (Local Area Network) interface board or a wireless communication circuit for wireless communication.

[0020] In the maintenance server 200, the auxiliary storage unit 230 stores an operating system (OS), various programs, and various information tables, etc. Also, in the maintenance server 200, the processor 210 can realize various functions as described later by loading the program stored in the auxiliary storage unit 230 into the main memory unit 220 and executing it. However, some or all of the functions in the maintenance server 200 may be realized by a hardware circuit such as an ASIC or an FPGA. Note that the maintenance server 200 does not necessarily have to be realized by a single physical configuration and may be configured by a plurality of computers that cooperate with each other.

[0021] (Functional configuration) Next, the functional configuration of the maintenance server 200 that constitutes the maintenance system 1 according to the present embodiment will be described with reference to FIGS. 3 to 6. FIG. 3 is a block diagram schematically showing an example of the functional configuration of the maintenance server 200.

[0022] The maintenance server 200 includes a control unit 201, a communication unit 202, a vehicle information DB 203, and a bridge information DB 204. The control unit 201 has a function of performing arithmetic processing for controlling the maintenance server 200. The control unit 201 can be realized by a processor 210 in the maintenance server 200. The communication unit 202 has a function of connecting the maintenance server 200 to the network N1. The communication unit 202 can be realized by a communication I / F 240 in the maintenance server 200.

[0023] The control unit 201 repeatedly receives sensor information from the vehicle 10 at a predetermined cycle through the communication unit 202. The control unit 201 stores the sensor information received from the vehicle 10 in the vehicle information DB 203. The vehicle information DB 203 has a function of holding vehicle information. The vehicle information DB 203 can be realized by an auxiliary storage unit 230 in the maintenance server 200. FIG. 4 is a diagram showing an example of the table configuration of the vehicle information held in the vehicle information DB 203. As shown in FIG. 4, the vehicle information has a vehicle ID field, a date and time field, a vehicle position field, and a wheel speed field.

[0024] An identifier (vehicle ID) for identifying the vehicle is input into the vehicle ID field. Based on the sensor information, the date and time when the wheel speed of the vehicle 10 was acquired by the wheel speed sensor 100 in the vehicle 10 is input into the date and time field. Based on the sensor information, the position of the vehicle 10 is input into the vehicle position field. For example, the position of the vehicle 10 is input by latitude and longitude into the vehicle position field. Information regarding the wheel speed of the vehicle 10 at the position input into the vehicle position field is input into the wheel speed field. Here, the rotation speed of the wheels of the vehicle 10 and the like are input into the wheel speed field. The control unit 201 can grasp the position where the vehicle 10 existed in the past and the wheel speed at that position by acquiring the vehicle information stored in the vehicle information DB 203.

[0025] The bridge information DB204 has a function of holding bridge information. The bridge information DB204 can be realized by the auxiliary storage unit 230 in the maintenance server 200. FIG. 5 is a diagram showing an example of the table configuration of the bridge information held in the bridge information DB204. As shown in FIG. 5, the bridge information has a bridge ID field, an assumed traffic volume field, an allowable traffic volume field, a joint part ID field, and a joint part position field.

[0026] An identifier (bridge ID) for specifying a bridge is input to the bridge ID field. The assumed traffic volume corresponding to the bridge ID input to the bridge ID field is input to the assumed traffic volume field. Also, the allowable traffic volume corresponding to the bridge ID input to the bridge ID field is input to the allowable traffic volume field. Here, the assumed traffic volume is the traffic volume per unit time assumed when vehicles travel on the bridge. The number of vehicles, weight, etc. per unit time assumed to travel on the bridge is input to the assumed traffic volume field. Also, the traffic volume per unit time allowed to travel on the bridge is input to the allowable traffic volume field. The allowable traffic volume is, for example, a value determined at the time of bridge design.

[0027] An identifier (joint part ID) for specifying a joint part in the bridge corresponding to the bridge ID input to the bridge ID is input to the joint part ID field. The position of the joint part corresponding to the joint part ID input to the joint part ID field is input to the joint part position field. The position of the joint part is input to the joint part position field using, for example, latitude and longitude. The control unit 201 can grasp the assumed traffic volume, the allowable traffic volume, and the positions of the joint parts of each bridge by acquiring the bridge information from the bridge information DB204.

[0028] By acquiring vehicle information and bridge information from the vehicle information DB 203 and the bridge information DB 204 respectively, the control unit 201 can grasp the variation rate of the wheel speed when the vehicle 10 travels through the joint portion. Specifically, the control unit 201 acquires the position of the joint portion input in the joint portion position field in the bridge information held in the bridge information DB 204. Further, the control unit 201 acquires the position where the vehicle 10 exists input in the vehicle position field in the vehicle information held in the vehicle information DB 203. Then, the control unit 201 refers to the position where the vehicle 10 exists and the position of the joint portion, and acquires the wheel speed of the vehicle 10 within a predetermined range including the joint portion. Here, the predetermined range is set to include points before and after the joint portion in the traveling direction.

[0029] At this time, since the predetermined range is set to include the joint portion and the points before and after the joint portion in the traveling direction, the control unit 201 can grasp the situation of the wheel speed before and after the vehicle 10 travels through the joint portion. Therefore, the control unit 201 can calculate the variation rate of the wheel speed of the vehicle 10 when the vehicle 10 travels through the joint portion.

[0030] Here, when the bridge deteriorates, a step is generated in the joint portion of the bridge, making it easier for the wheel speed of the vehicle 10 to vary. Furthermore, it is assumed that the greater the deterioration of the bridge, the greater the step in the joint portion of the bridge. When the step in the joint portion of the bridge increases, it is assumed that the wheel speed of the vehicle 10 becomes even more likely to vary and the variation rate of the wheel speed becomes greater. Therefore, the control unit 201 calculates the average value of the variation rates of the wheel speeds of the plurality of vehicles 10 (hereinafter, may be referred to as the "average variation rate") when the plurality of vehicles 10 travel through each joint portion. The control unit 201 calculates the average variation rate for each joint portion for each unit period based on the variation rates of the wheel speeds of the plurality of vehicles 10 that have traveled through the joint portion during the unit period. Thereby, the control unit 201 calculates the time transition of the average variation rate. Here, the unit period is a predetermined period such as one month, for example.

[0031] In addition, in this embodiment, it is assumed that each bridge has a plurality of joint portions. Therefore, in this embodiment, the control unit 201 calculates the maximum value of the average change rates of the plurality of joint portions in each bridge as the average change rate of each bridge. That is, the control unit 201 calculates the average change rate of the joint portion with the largest average change rate in each bridge as the average change rate of each bridge. Thereby, the control unit 201 can grasp the average of the change rates of the joint portions in which the deterioration is progressing most in each bridge.

[0032] FIG. 6 is a diagram showing an example of the time transition of the average change rate. In FIG. 6, the average change rates of two bridges, bridge A and bridge B, are shown. In FIG. 6, the average change rate of bridge A is indicated by white circles. Also, in FIG. 6, the average change rate of bridge B is indicated by black circles. As shown in FIG. 6, after time point A, the average change rates of bridge A and bridge B are increasing. That is, it is assumed that the deterioration of bridge A and bridge B has been progressing after time point A.

[0033] Here, as shown in FIG. 6, after time point A, the slope of the average change rate of bridge A is larger than the slope of the average change rate of bridge B. That is, after time point A, the rate of change of the average change rate (hereinafter, may be referred to as the "specific change rate") is larger for bridge A than for bridge B. That is, it is assumed that the deterioration of bridge A is progressing faster than that of bridge B. Therefore, it is assumed that bridge A needs to be maintained earlier than bridge B. Thus, the control unit 201 determines, based on the specific change rate, the priority order (hereinafter, may be simply referred to as the "priority order") regarding the maintenance order of bridge A and bridge B such that bridge A has a higher priority than bridge B. Thereby, bridge A, in which the deterioration is progressing faster than bridge B, will be maintained earlier than bridge B. In this way, the control unit 201 determines, based on the specific change rate, the priority order of the bridge with a larger specific change rate to be higher than the priority order of the bridge with a smaller specific change rate.

[0034] Here, among a plurality of bridges, there may be at least two bridges (hereinafter sometimes referred to as "specific bridges") in which the difference in the specific change rate is equal to or less than a predetermined value. The predetermined value is defined as a value such that even if the specific change rates of two specific bridges are different, if the difference in the specific change rate is equal to or less than the predetermined value, it is considered that the progress of deterioration of the two specific bridges is slight. In this case, the control unit 201 determines the priority order of the at least two bridges based on the ratio of the assumed traffic volume to the allowable traffic volume of each specific bridge (hereinafter sometimes referred to as "specific ratio"). Specifically, the control unit 201 acquires the assumed traffic volume and the allowable traffic volume of each specific bridge from the bridge information held in the bridge information DB 204. Then, the control unit 201 calculates the specific ratio of each specific bridge by dividing the assumed traffic volume by the allowable traffic volume.

[0035] The closer the assumed traffic volume is to the allowable traffic volume, the greater the load on the bridge is assumed to be. That is, it is assumed that a bridge with a larger specific ratio has a relatively larger load on the bridge than a bridge with a smaller specific ratio. Therefore, the control unit 201 determines that the priority order of the bridge with a larger specific ratio among the at least two specific bridges is higher than the priority order of the bridge with a smaller specific ratio. As a result, among at least two specific bridges in which deterioration is progressing at the same speed, maintenance of the specific bridge with a relatively large load can be performed earlier than maintenance of the specific bridge with a relatively small load.

[0036] (Determination Process) Next, in the maintenance system 1, the determination process executed by the control unit 201 in the maintenance server 200 will be described with reference to FIG. 7. FIG. 7 is a flowchart of the determination process. The determination process is a process for determining the priority order of a plurality of bridges. The determination process is repeatedly executed at a predetermined interval.

[0037] In the determination process, first, in S101, bridge information is acquired from the bridge information DB 204. Next, in S102, the positions of the joint parts of each of the multiple bridges are identified based on the acquired bridge information. Next, in S103, vehicle information is acquired from the vehicle information DB 203. Next, in S104, the wheel speeds of the multiple vehicles 10 within a predetermined range including the joint parts of the multiple bridges are acquired based on the position of the vehicle 10 in the vehicle information acquired in S103 and the positions of the joint parts of the multiple bridges identified in S102. Next, in S105, the time transition of the average fluctuation rate of each bridge is calculated based on the wheel speeds of the multiple vehicles 10 within a predetermined range including the joint parts. Next, in S106, the specific change rate of each bridge is calculated based on the time transition of the average fluctuation rate of each bridge.

[0038] Next, in S107, it is determined whether or not there are at least two specific bridges based on the calculated specific change rates. If a negative determination is made in S107, the difference between the specific change rates of the bridges is greater than a predetermined value, and it is assumed that the difference in the progress of deterioration of each bridge is not a slight difference. Therefore, in S108, the priorities of the multiple bridges are determined based on the specific change rates of the multiple bridges. Then, the determination process is temporarily terminated.

[0039] In addition, if the judgment in S107 is affirmative, in S109, the hypothetical The fixed traffic volume and the allowable traffic volume are acquired from the bridge information DB 204. Next, in S110, the specific ratio of each specific bridge is calculated from the acquired expected traffic volume and allowable traffic volume. Then, in S111, the priority order of multiple bridges is determined based on the specific change rate of each bridge and the specific ratio of each specific bridge. Specifically, the priority order of multiple bridges including at least two specific bridges is determined to be higher the larger the specific change rate of the bridge. Also, the priority order of at least two specific bridges is determined to be higher the larger the specific ratio of the specific bridge. In this way, the priority order is determined for multiple bridges including the specific bridge and bridges other than the specific bridge.

[0040] As described above, the maintenance system 1 determines the priority of maintenance of a plurality of bridges. As a result, among the plurality of bridges, it becomes possible to preferentially maintain a bridge in which deterioration is progressing compared to other bridges. In this way, efficient maintenance of a plurality of bridges becomes possible.

[0041] (Modification 1) In the present embodiment, the maintenance server 200 determines the priority based on sensor information including the wheel speed and the position of the vehicle 10 received from the vehicle 10. On the other hand, when the vehicle 10 is traveling on the joint portion, it can be assumed that an impact is generated on the vehicle 10 due to the step at the joint portion. Therefore, when the vehicle 10 is traveling on the joint portion, it can be assumed that an acceleration is applied to the vehicle 10 due to the step at the joint portion. Therefore, the vehicle 10 may acquire the acceleration applied to the vehicle 10 by an acceleration sensor instead of the wheel speed sensor 100. Specifically, the acceleration sensor in the vehicle 10 acquires the vertical acceleration applied to the vehicle 10. The vehicle 10 transmits, via the network N1, information including the acceleration applied to the vehicle 10 acquired by the acceleration sensor and the position of the vehicle 10 to the maintenance server 200 as sensor information.

[0042] Here, it is assumed that as the bridge deteriorates, the step at the joint portion of the bridge becomes larger. Then, it is assumed that the greater the deterioration of the bridge, the greater the impact generated on the vehicle 10 when the vehicle 10 passes through the joint portion of the bridge. Then, it is assumed that the greater the deterioration of the bridge, the greater the vertical acceleration applied to the vehicle 10. Therefore, the maintenance server 200 can grasp the deterioration status of the bridge based on the acceleration of the vehicle 10 acquired when the vehicle 10 passes through the joint portion of the bridge. Therefore, the maintenance server 200 may determine the priority of a plurality of bridges based on the acceleration of the vehicle 10 received from the vehicle 10.

[0043] In this case, the vehicle information held in the vehicle information DB 203 in the maintenance server 200 has an acceleration field instead of a wheel speed field. Then, based on the vehicle information and the bridge information, the maintenance server 200 identifies the acceleration of the vehicle 10 when the vehicle 10 travels over the joint portion of each bridge. Then, the maintenance server 200 calculates, for each unit period, the average value of the accelerations of the plurality of vehicles 10 (hereinafter sometimes referred to as "average acceleration") when the plurality of vehicles 10 travel over the joint portion. In this way, the maintenance server 200 calculates the time course of the average acceleration. Then, the maintenance server 200 determines the priority based on the rate of change of the average acceleration.

[0044] (Modification 2) In the present embodiment, the maintenance server 200 determines the priority based on a specific rate of change calculated based on the time course of the average rate of change. However, the maintenance server 200 does not necessarily have to determine the priority based on the specific rate of change. For example, it is assumed that the greater the average rate of change of each bridge, the greater the step at the joint portion due to deterioration. Therefore, the maintenance server 200, for example, determines the priority in descending order of the average rate of change of each bridge and may determine the priority.

[0045] (Modification 3) In the present embodiment, when there are at least two specific bridges, the maintenance server 200 determines the priority of at least the specific bridges based on a specific ratio. On the other hand, it is assumed that a bridge with a large assumed traffic volume has a greater absolute load on the bridge than a bridge with a small assumed traffic volume. Therefore, the maintenance server 200 in this modification determines the priority of the bridge with a large assumed traffic volume among the at least two specific bridges to be higher than the priority of the bridge with a small assumed traffic volume. As a result, among at least two specific bridges where deterioration is progressing at the same speed, maintenance of a specific bridge on which a large absolute load is assumed can be performed earlier than maintenance of a specific bridge on which a small absolute load is assumed.

[0046] (Modification Example 4) In the present embodiment, the maintenance server 200 determines the priority order of a plurality of bridge piers by calculating a specific fluctuation rate. Further, in Modification Example 1, the maintenance server 200 determines the priority order based on the rate of change of the average acceleration. However, the maintenance server 200 does not necessarily have to determine the priority order of a plurality of bridges based on the specific fluctuation rate or the rate of change of the average acceleration. The maintenance server 200 can grasp the progress of the deterioration of the bridges based on the time transition of the average fluctuation rate or the time transition of the average acceleration. Therefore, the maintenance server 200 may determine the priority order of a plurality of bridges based on the progress of the deterioration of the plurality of bridges by a known method.

[0047] (Modification Example 5) In the present embodiment, the maintenance server 200 calculates the time transition of the average fluctuation rate by calculating the average fluctuation rate for each unit period based on the wheel speeds of a plurality of vehicles 10 for each unit period. On the other hand, it is assumed that the height of the step at the joint portion varies due to the expansion and contraction or elongation of the bridge girder, the structure, or the bridge pier due to the influence of the temperature and the like. Therefore, in this modification example, the maintenance server 200 calculates the average fluctuation rate at a predetermined time based on the wheel speeds of a plurality of vehicles 10 at a predetermined time. Here, the predetermined time is, for example, a time determined by the season. Then, the maintenance server 200 determines the priority order of a plurality of bridges based on the time transition of the average fluctuation rate at a predetermined time. That is, the maintenance server 200 determines the priority order of a plurality of bridges based on the time transition of the average fluctuation rate for each year in a specific season. As a result, it becomes possible to efficiently maintain a plurality of bridges in consideration of the average fluctuation rate of the wheel speed that changes depending on the time such as the season. Note that the predetermined time may be, for example, a time determined by the average temperature or the like.

[0048] <Other Embodiments> The above-described embodiments are merely examples, and the present disclosure can be appropriately modified and implemented without departing from the gist thereof. Further, the processes and means described in the present disclosure can be freely combined and implemented as long as no technical contradiction occurs.

[0049] Furthermore, a process described as being performed by one device may be shared and executed by multiple devices. Alternatively, a process described as being performed by different devices may be executed by one device. In a computer system, the hardware configuration (server configuration) by which each function is realized can be flexibly changed.

[0050] The present disclosure can also be realized by supplying a computer program that implements the functions described in the above embodiments to a computer, and having one or more processors of the computer read and execute the program. The information may be provided to the computer by a non-transitory computer-readable storage medium connectable to the system bus of the computer or provided to the computer via a network. The non-transitory computer-readable storage medium includes any type of medium suitable for storing electronic instructions, such as, for example, a magnetic disk (such as a floppy disk or a hard disk drive (HDD)), an optical disk (such as a CD-ROM, a DVD disk, or a Blu-ray disk), any type of disk, a read-only memory (ROM), a random access memory (RAM), an EPROM, an EEPROM, a magnetic card, a flash memory, or an optical card. [Explanation of symbols]

[0051] 1. Maintenance System 10. Vehicle 100··Wheel speed sensor 200 Maintenance Server 201 Control section 202 Communications Department 203 Vehicle Information DB 204 Bridge Information DB

Claims

1. Obtaining, for each of a plurality of bridges, a first value acquired by a sensor of a vehicle, the first value being related to a step at a joint portion of the bridge; Determining a priority order for maintenance of the plurality of bridges based on the first value for each of the plurality of bridges and a second value related to the traffic volume for each of the plurality of bridges; A control unit that executes the above is provided; The second value is a ratio of the traffic volume allowed for each of the plurality of bridges to the traffic volume assumed for each of the plurality of bridges, An information processing apparatus.

2. Based on the first value for each of the plurality of bridges, the control unit determines the priority order of the bridges among the plurality of bridges having a larger step at the joint portion to be higher than the priority order of the bridges having a smaller step at the joint portion. The information processing apparatus according to Claim 1.

3. The first value is a value related to a change in the wheel speed of the vehicle. The information processing apparatus according to Claim 1.

4. The first value is a value related to the acceleration applied to the vehicle. The information processing apparatus according to Claim 1.

5. An information processing method executed by a computer, the method including: Obtaining, for each of a plurality of bridges, a first value acquired by a sensor of a vehicle, the first value being related to a step at a joint portion of the bridge; Determining a priority order for maintenance of the plurality of bridges based on the first value for each of the plurality of bridges and a second value related to the traffic volume for each of the plurality of bridges; The second value is a ratio of the traffic volume allowed for each of the plurality of bridges to the traffic volume assumed for each of the plurality of bridges, An information processing method.

6. A program for a computer to execute an information processing method, the information processing method including: Obtaining, for each of a plurality of bridges, a first value acquired by a sensor of a vehicle, the first value being related to a step at a joint portion of the bridge; Determining a priority order for maintenance of the plurality of bridges based on the first value for each of the plurality of bridges and a second value related to the traffic volume for each of the plurality of bridges; The second value is a ratio of the traffic volume allowed for each of the plurality of bridges to the traffic volume assumed for each of the plurality of bridges, A program. ​ ​ ​

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