Monitoring system, monitoring device, monitoring method, and program

Abstract

To detect infrastructure failures with a high degree of accuracy.SOLUTION: A monitoring system includes: data acquisition means for acquiring first data indicating a distribution of at least one physical quantity in a longitudinal direction of an optical fiber installed in an infrastructure facility, the data being calculated based on backscattered light from the optical fiber, and second data indicating the at least one physical quantity detected by a measurement sensor installed in the infrastructure facility; fault detection means for detecting a fault in the infrastructure facility based on the first data and the second data; and output means for outputting a detection result by the fault detection means.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present disclosure relates to a monitoring system, a monitoring device, a monitoring method, and a program.

Background Art

[0002] Patent Document 1 discloses a technique for measuring the temperature distribution in the longitudinal direction of an optical fiber based on Raman scattered light generated in the optical fiber by pulsed light.

[0003] Patent Document 2 discloses a technique for specifying the temperature distribution of an electric power device by providing an optical fiber along the electric power device.

[0004] Patent Document 3 discloses a technique for measuring the temperatures of a plurality of battery cells constituting a battery by providing an optical fiber along the plurality of battery cells.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Patent Document 2

Patent Document 3

Summary of the Invention

Problems to be Solved by the Invention

[0006] However, with the techniques of Patent Documents 1 to 3 above, it is not possible to detect failures in infrastructure facilities with high accuracy.

[0007] An object of the present disclosure is to detect failures in infrastructure facilities with high accuracy.

Means for Solving the Problems

[0008] First data indicating the distribution of at least one physical quantity in the longitudinal direction of the optical fiber calculated based on the backscattered light of the optical fiber installed in the infrastructure facility, and second data indicating the at least one physical quantity detected by a measurement sensor installed in the infrastructure facility, data acquisition means for acquiring the same; Fault detection means for detecting a fault in the infrastructure facility based on the first data and the second data; Output means for outputting the detection result by the fault detection means; Including A monitoring system is provided.

[0009] First data indicating the distribution of at least one physical quantity in the longitudinal direction of the optical fiber calculated based on the backscattered light of the optical fiber installed in the infrastructure facility, and second data indicating the at least one physical quantity detected by a measurement sensor installed in the infrastructure facility, data acquisition means for acquiring the same; Fault detection means for detecting a fault in the infrastructure facility based on the first data and the second data; Output means for outputting the detection result by the fault detection means; Including A monitoring device is provided.

[0010] Acquire first data indicating the distribution of at least one physical quantity in the longitudinal direction of the optical fiber calculated based on the backscattered light of the optical fiber installed in the infrastructure facility, and second data indicating the at least one physical quantity detected by a measurement sensor installed in the infrastructure facility, Detect a fault in the infrastructure facility based on the first data and the second data, Output the detection result, A monitoring method is provided.

Advantages of the Invention

[0011] According to the present disclosure, failures in infrastructure facilities can be detected with high accuracy.

Brief Description of the Drawings

[0012]

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Embodiments for Carrying Out the Invention

[0013] (Summary of the Present Disclosure) Hereinafter, the summary of the present disclosure will be described. FIG. 1 is a block diagram of a monitoring system 100.

[0014] The monitoring system 100 includes a data acquisition unit 101, a failure detection unit 102, and an output unit 103.

[0015] The data acquisition unit 101 acquires first data indicating the distribution of at least one physical quantity in the longitudinal direction of the optical fiber calculated based on the backscattered light of the optical fiber installed in the infrastructure facility, and second data indicating the at least one physical quantity detected by the measurement sensor installed in the infrastructure facility.

[0016] The failure detection means 102 detects a failure of the infrastructure facility based on the first data and the second data.

[0017] The output means 103 outputs the detection result by the failure detection means.

[0018] According to the above configuration, a failure of the infrastructure facility can be detected with high accuracy.

[0019] (First Embodiment) Hereinafter, a first embodiment of the present disclosure will be described. FIG. 2 is a plan layout diagram of the infrastructure system 1. As shown in FIG. 2, the infrastructure system 1 includes an infrastructure facility 2, an infrastructure facility monitoring device 3, and an output device 4. The infrastructure facility 2, the infrastructure facility monitoring device 3, and the output device 4 are connected to each other by wire or wirelessly.

[0020] The infrastructure facility 2 is typically a substation, a factory, or a data center.

[0021] The infrastructure facility monitoring device 3 is a device that monitors the infrastructure facility 2.

[0022] The output device 4 is typically a display or a speaker.

[0023] A plurality of optical fibers 5 and an optical fiber sensing device 6 are provided in the infrastructure facility 2. The plurality of optical fibers 5 are provided so as to cover the infrastructure facility 2 in a plan view. Typically, as shown in FIG. 2, the plurality of optical fibers 5 are provided so as to extend parallel to each other. Alternatively, the plurality of optical fibers 5 may be provided in a grid pattern. The plurality of optical fibers 5 are connected to the optical fiber sensing device 6. The optical fiber sensing device 6 emits pulsed light to each optical fiber 5 and receives the backscattered light, thereby measuring the distribution of a plurality of physical quantities in the longitudinal direction of the optical fiber 5.

[0024] The plurality of physical quantities are typically vibration, sound, temperature, and strain. The optical fiber sensing device 6 measures the distribution of vibration in the longitudinal direction of the optical fiber 5 based on the above-described backscattered light. Specifically, the distribution of vibration is the distribution of the amplitude of vibration. The optical fiber sensing device 6 measures the distribution of sound in the longitudinal direction of the optical fiber 5 based on the above-described backscattered light. Specifically, the distribution of sound is the distribution of the sound pressure of sound. The optical fiber sensing device 6 measures the distribution of temperature in the longitudinal direction of the optical fiber 5 based on the above-described backscattered light. The optical fiber sensing device 6 measures the distribution of strain in the longitudinal direction of the optical fiber 5 based on the above-described backscattered light.

[0025] The optical fiber sensing device 6 has coordinate data indicating the arrangement coordinates of the plurality of optical fibers 5. Each optical fiber 5 is arranged so as to extend linearly in plan view. Therefore, the above-described coordinate data typically includes the coordinate data of a plurality of points in the longitudinal direction of each optical fiber 5. For example, the above-described coordinate data is composed of the coordinate data of 100 points in the longitudinal direction of each optical fiber 5. The optical fiber sensing device 6 generates optical fiber measurement data based on the coordinate data and the above-described measurement results. The optical fiber measurement data generated by the optical fiber sensing device 6 is a specific example of the first data. The optical fiber sensing device 6 outputs the optical fiber measurement data to the infrastructure monitoring device 3. FIG. 3 shows the data structure of the optical fiber measurement data. As shown in FIG. 3, the optical fiber measurement data is data associating vibration, sound, temperature, and strain with coordinates.

[0026] The infrastructure 2 is further provided with a plurality of measurement sensors 7 and a sensor control device 8.

[0027] A plurality of measurement sensors 7 measure a plurality of physical quantities at specific measurement points of the infrastructure facility 2. The plurality of physical quantities are typically vibration, sound, temperature, and strain. Each measurement sensor 7 includes a vibration sensor, a sound sensor, a temperature sensor, and a strain sensor. Each measurement sensor 7 measures a plurality of physical quantities at the measurement point where the measurement sensor 7 is provided. Each measurement sensor 7 outputs the measurement result to the sensor control device 8. In the present embodiment, the plurality of measurement sensors 7 are each arranged in the vicinity of the plurality of optical fibers 5.

[0028] The sensor control device 8 has coordinate data indicating the arrangement coordinates of the plurality of measurement sensors 7. The sensor control device 8 generates sensor measurement data based on the coordinate data and the above measurement results. The sensor measurement data generated by the sensor control device 8 is a specific example of the second data. The sensor control device 8 outputs the sensor measurement data to the infrastructure facility monitoring device 3. The data structure of the sensor measurement data is the same as the data structure of the optical fiber measurement data shown in FIG. 3.

[0029] FIG. 4 is a block diagram of the infrastructure facility monitoring device 3. In the present embodiment, the infrastructure facility monitoring device 3 is realized by a single device. However, alternatively, the infrastructure facility monitoring device 3 may be realized by distributed processing by a plurality of devices. The infrastructure facility monitoring device 3 includes a data acquisition unit 10, a failure detection unit 11, an output unit 12, and a storage unit 13.

[0030] The data acquisition unit 10 acquires optical fiber measurement data from the optical fiber sensing device 6. The data acquisition unit 10 stores the acquired optical fiber measurement data in the storage unit 13. Similarly, the data acquisition unit 10 acquires sensor measurement data from the sensor control device 8. The data acquisition unit 10 stores the acquired sensor measurement data in the storage unit 13.

[0031] The failure detection unit 11 detects a failure of the infrastructure facility 2 based on the optical fiber measurement data and the sensor measurement data stored in the storage unit 13. The failure detection unit 11 stores the failure detection result in the storage unit 13.

[0032] Specifically, the failure detection unit 11 determines the reliability of the optical fiber measurement data by comparing the optical fiber measurement data with the sensor measurement data. That is, since the plurality of measurement sensors 7 are respectively arranged near the plurality of optical fibers 5, the sensor measurement data and the optical fiber measurement data are reasonably consistent with each other. And it is extremely rare for the plurality of optical fibers 5 and the optical fiber sensing device 6, and the plurality of measurement sensors 7 and the sensor control device 8 to fail simultaneously in the same way. Therefore, the failure detection unit 11 can determine that the reliability of the optical fiber measurement data is high when comparing the optical fiber measurement data with the sensor measurement data and the two are reasonably consistent with each other.

[0033] The failure detection unit 11 includes a detection model 11a. The detection model 11a is typically composed of a neural network that is trained to output a failure of the infrastructure facility 2 when inputting the optical fiber measurement data stored in the storage unit 13. Here, the failure of the infrastructure facility 2 includes a failure that has already occurred in the infrastructure facility 2 and a failure that may occur in the infrastructure facility 2 in the future. Instead of using the detection model 11a, the failure detection unit 11 may detect the above failure by comparing a plurality of measurement results constituting the optical fiber measurement data with a threshold value.

[0034] The output unit 12 outputs the failure detection result by the failure detection unit 11 to the output device 4. The output unit 12 may output by superimposing the location where the failure detected by the failure detection unit 11 occurs on at least one of a map, a power system diagram, and a weather map. Thereby, the operator of the infrastructure facility 2 can easily formulate a specific action against the failure.

[0035] The output unit 12 may change the display mode of the failure detection result according to the type of failure. The display mode is typically the color, shape, and size of characters or icons.

[0036] Next, referring to FIG. 5, the control flow of the infrastructure monitoring device 3 will be described. FIG. 5 shows the control flow of the infrastructure monitoring device 3.

[0037] First, the data acquisition unit 10 acquires the optical fiber measurement data and the sensor measurement data (S100). Next, the failure detection unit 11 determines whether the optical fiber measurement data and the sensor measurement data are reasonably consistent with each other by comparing the optical fiber measurement data with the sensor measurement data (S110). If the result in step S110 is NO, the failure detection unit 11 ends the process. On the other hand, if the result in step S110 is YES, the failure detection unit 11 advances the process to S120. In step S120, the failure detection unit 11 detects a failure of the infrastructure facility 2 based on the optical fiber measurement data (S120). Then, the output unit 12 outputs the failure detection result by the failure detection unit 11 to the output device 4 (S130).

[0038] The first embodiment of the present disclosure has been described above. The above embodiment has the following features.

[0039] The infrastructure monitoring device 3 (monitoring system, monitoring device) includes a data acquisition unit 10 (data acquisition means), a failure detection unit 11 (failure detection means), and an output unit 12 (output means). The data acquisition unit 10 acquires optical fiber measurement data (first data) and sensor measurement data (second data). The optical fiber measurement data is data indicating the distribution of a plurality of physical quantities in the longitudinal direction of the optical fiber 5 calculated based on the backscattered light of the optical fiber 5 installed in the infrastructure facility 2. The sensor measurement data is data indicating a plurality of physical quantities detected by the measurement sensor 7 installed in the infrastructure facility 2. The failure detection unit 11 detects a failure of the infrastructure facility 2 based on the optical fiber measurement data and the sensor measurement data acquired by the data acquisition unit 10. The output unit 12 outputs the detection result by the failure detection unit 11. According to the above configuration, a failure of the infrastructure facility 2 can be detected with high accuracy.

[0040] In the above embodiment, it was assumed that the optical fiber measurement data is data indicating the distribution of a plurality of physical quantities in the longitudinal direction of the optical fiber 5 calculated based on the backscattered light of the optical fiber 5 installed in the infrastructure facility 2. However, alternatively, the optical fiber measurement data may be data indicating the distribution of at least one physical quantity in the longitudinal direction of the optical fiber 5 calculated based on the backscattered light of the optical fiber 5 installed in the infrastructure facility 2. Similarly, it was assumed that the sensor measurement data is data indicating a plurality of physical quantities detected by the measurement sensor 7 installed in the infrastructure facility 2. However, alternatively, the sensor measurement data may be data indicating at least one physical quantity detected by the measurement sensor 7 installed in the infrastructure facility 2. The at least one physical quantity typically includes any one of vibration, sound, temperature, and strain.

[0041] The physical quantity indicated by the optical fiber measurement data and the physical quantity indicated by the sensor measurement data may be the same physical quantity as each other, or may be different physical quantities from each other. When both are the same physical quantity as each other, it is easy to determine the consistency between the two in step S110 of FIG. 5. Even when both are different physical quantities from each other, for example, when there is a causal relationship or a correlation relationship between them as in the case where one physical quantity is vibration and the other physical quantity is strain, it can be said that it is easy to determine the consistency between the two in step S110 of FIG. 5.

[0042] Further, the failure detection unit 11 determines the reliability of the optical fiber measurement data by comparing the optical fiber measurement data and the sensor measurement data. According to the above configuration, the reliability of the optical fiber measurement data can be ensured with a simple configuration.

[0043] Further, the failure detected by the failure detection unit 11 may include a failure occurring in the infrastructure facility 2 and a failure that may occur in the infrastructure facility 2 in the future.

[0044] In addition, the output unit 12 superimposes and outputs the location where the failure is detected by the failure detection unit 11 and at least one of a map, a power system diagram, and a weather map. According to the above configuration, it becomes easier to easily formulate a specific action for the failure.

[0045] Also, the plurality of measurement sensors 7 are arranged in the vicinity of the optical fiber 5. According to the above configuration, it is easy to determine a reasonable consistency between the optical fiber measurement data and the sensor measurement data.

[0046] (Second Embodiment) Next, a second embodiment of the present disclosure will be described. Hereinafter, the differences between this embodiment and the above first embodiment will be mainly described, and duplicate descriptions will be omitted. FIG. 6 is a plan layout diagram of the infrastructure system 1. As shown in FIG. 6, the infrastructure facility 2 further includes a surveillance camera 20. The surveillance camera 20 images the infrastructure facility 2. The surveillance camera 20 outputs the captured image to the infrastructure facility monitoring device 3.

[0047] FIG. 7 is a block diagram of the infrastructure facility monitoring device. As shown in FIG. 7, the infrastructure facility monitoring device 3 includes an image acquisition unit 21. The image acquisition unit 21 is a specific example of the image acquisition means. The image acquisition unit 21 acquires the captured image from the surveillance camera 20 at a predetermined interval. The image acquisition unit 21 stores the acquired captured image in the storage unit 13.

[0048] Then, the failure detection unit 11 detects a failure based on the optical fiber measurement data, the sensor measurement data, and the captured image. As an example, the failure detection unit 11 determines the reliability of the optical fiber measurement data by comparing the optical fiber measurement data and the sensor measurement data with each other, in the same manner as in the first embodiment. Then, the failure detection unit 11 detects a failure based on the optical fiber measurement data and the captured image. Specifically, it is as follows.

[0049] The failure detection unit 11 detects a change in the infrastructure facility 2 by comparing the captured image with the captured images acquired in the past. The changes in the infrastructure facility 2 typically include concrete cracks, lifting, peeling, spalling, and water leakage. Instead of detecting the change in the infrastructure facility 2 by the above comparison, the failure detection unit 11 may detect the change in the infrastructure facility 2 by inputting the captured image into an R-CNN (Regional Convolutional Neural Network).

[0050] Then, the failure detection unit 11 comprehensively detects the failure of the infrastructure facility 2 by comparing the change in the infrastructure facility 2 detected based on the captured image with the optical fiber measurement data.

[0051] For example, when the failure detection unit 11 detects a concrete crack based on the captured image at a specific location of the infrastructure facility 2 and detects the strain or vibration of the optical fiber 5 at the same specific location, it may determine that a failure has occurred in the infrastructure facility 2 at the specific location.

[0052] Similarly, when the failure detection unit 11 detects a concrete crack based on the captured image at a specific location of the infrastructure facility 2 but does not detect the strain or vibration of the optical fiber 5 at the specific location, it may determine that no failure has occurred in the infrastructure facility 2 at the specific location.

[0053] Similarly, when the failure detection unit 11 does not detect a concrete crack based on the captured image at a specific location of the infrastructure facility 2 but detects the strain or vibration of the optical fiber 5 at the specific location, it may determine that no failure has occurred in the infrastructure facility 2 at the specific location.

[0054] The second embodiment has been described above. The second embodiment has the following features.

[0055] The infrastructure monitoring device 3 further includes an imaging image acquisition unit 21 that acquires an imaging image obtained by imaging the infrastructure 2. The failure detection unit 11 detects a failure based on the optical fiber measurement data, the sensor measurement data, and the imaging image. According to the above configuration, the reliability of failure detection of the infrastructure 2 can be further improved.

[0056] As described above, the present disclosure has been described with reference to the embodiments. However, the present disclosure is not limited to the above-described embodiments. Various changes that can be understood by those skilled in the art can be made to the configuration and details of the present disclosure within the scope of the present disclosure.

[0057] For example, the failure detection unit 11 may acquire weather information such as a lightning strike forecast from a weather server and predict a possible future failure of the infrastructure 2 based on the weather information.

[0058] In addition, the failure detection unit 11 may predict a possible future failure of the infrastructure 2 based on the location conditions of the infrastructure 2. Specifically, when the location of the infrastructure 2 is close to the coastline, the failure detection unit 11 can predict that salt damage will occur to the infrastructure 2.

[0059] In addition, the output unit 12 may generate countermeasure information indicating countermeasures corresponding to the failure detected by the failure detection unit 11. In this case, a form in which the output unit 12 outputs the countermeasure information to the output device 4 together with the failure detection result can be considered.

[0060] Subsequently, the hardware configuration of the infrastructure monitoring device 3 will be described. In the infrastructure monitoring device 3, the data acquisition unit 10, the failure detection unit 11, the output unit 12, and the imaging image acquisition unit 21 are realized by a processing circuit. The storage unit 13 is realized by a storage circuit. The processing circuit may be a processor and a memory that execute a program stored in the memory, or may be dedicated hardware.

[0061] FIG. 8 is a diagram showing an example in the case where the processing circuit included in the infrastructure monitoring device 3 is configured by a processor and a memory. When the processing circuit is configured by a processor 1000 and a memory 1001, each function of the processing circuit of the infrastructure monitoring device 3 is realized by software, firmware, or a combination of software and firmware. The software or firmware is described as a program and stored in the memory 1001. In the processing circuit, the processor 1000 reads and executes the program stored in the memory 1001, thereby realizing each function. That is, the processing circuit includes the memory 1001 for storing a program in which the processing of the infrastructure monitoring device 3 is ultimately executed. Also, these programs can be said to cause a computer to execute the procedures and methods of the infrastructure monitoring device 3.

[0062] Here, the processor 1000 may be, for example, a CPU (Central Processing Unit), a processing device, an arithmetic device, a microprocessor, a microcomputer, or a DSP (Digital Signal Processor). Also, the memory 1001 includes, for example, non-volatile or volatile semiconductor memories such as RAM (Random Access Memory), ROM (Read Only Memory), flash memory, EPROM (Erasable Programmable ROM), EEPROM (registered trademark) (Electrically EPROM), magnetic disks, flexible disks, optical disks, compact disks, mini disks, or DVDs (Digital Versatile Discs).

[0063] FIG. 9 is a diagram showing an example in the case where the processing circuit included in the infrastructure monitoring device 3 is configured of dedicated hardware. When the processing circuit is configured of dedicated hardware, the processing circuit 1002 shown in FIG. 9 corresponds to, for example, a single circuit, a composite circuit, a programmed processor, a parallel programmed processor, an ASIC (Application Specific Integrated Circuit), an FPGA (Field Programmable Gate Array), or a combination thereof. Each function of the infrastructure monitoring device 3 may be realized by the processing circuit 1002 according to the function, or each function may be realized by the processing circuit 1002 in a lump.

[0064] Note that, regarding each function of the infrastructure monitoring device 3, a part may be realized by dedicated hardware and a part may be realized by software or firmware. Thus, the processing circuit can realize each of the above functions by dedicated hardware, software, firmware, or a combination thereof.

[0065] Each drawing is merely an illustration for explaining one or more embodiments. Each drawing is not associated with only one specific embodiment, but may be associated with one or more other embodiments. As can be understood by those skilled in the art, various features or steps described with reference to any one drawing can be combined with features or steps shown in one or more other drawings, for example, to create an embodiment not explicitly illustrated or described. Not all of the features or steps shown in any one drawing for explaining an exemplary embodiment are necessarily essential, and some features or steps may be omitted. The order of the steps described in any drawing may be changed as appropriate.

[0066] Some or all of the above embodiments may be described as follows in the appended claims, but are not limited thereto. (Appended Claim 1) First data indicating the distribution of at least one physical quantity in the longitudinal direction of the optical fiber calculated based on the backscattered light of the optical fiber installed in the infrastructure facility, and second data indicating the at least one physical quantity detected by the measurement sensor installed in the infrastructure facility, and data acquisition means for acquiring the same, Fault detection means for detecting a fault in the infrastructure facility based on the first data and the second data, Output means for outputting the detection result by the fault detection means, Including, Monitoring system. (Appendix 2) The fault detection means determines the reliability of the first data by comparing the first data and the second data. The monitoring system according to Appendix 1. (Appendix 3) The fault detected by the fault detection means includes a fault occurring in the infrastructure facility and a fault that may occur in the infrastructure facility in the future. The monitoring system according to Appendix 1. (Appendix 4) Further including imaging image acquisition means for acquiring an imaging image of the infrastructure facility, The fault detection means detects the fault based on the first data, the second data, and the imaging image. The monitoring system according to Appendix 1. (Appendix 5) The output means superimposes and outputs the location where the fault detected by the fault detection means occurs and at least one of a map, a power system diagram, and a weather map. The monitoring system according to Appendix 1. (Appendix 6) The measurement sensor is arranged near the optical fiber. The monitoring system according to Appendix 1. (Appendix 7) The at least one physical quantity includes any one of vibration, sound, temperature, and strain. The monitoring system according to Appendix 1. (Appendix 8) Data acquisition means for acquiring first data indicating the distribution of at least one physical quantity in the longitudinal direction of the optical fiber calculated based on the backscattered light of the optical fiber installed in the infrastructure facility, and second data indicating the at least one physical quantity detected by a measurement sensor installed in the infrastructure facility; Fault detection means for detecting a fault in the infrastructure facility based on the first data and the second data; Output means for outputting the detection result by the fault detection means; Including Monitoring device. (Appendix 9) Acquire first data indicating the distribution of at least one physical quantity in the longitudinal direction of the optical fiber calculated based on the backscattered light of the optical fiber installed in the infrastructure facility, and second data indicating the at least one physical quantity detected by a measurement sensor installed in the infrastructure facility, Detect a fault in the infrastructure facility based on the first data and the second data, Output the detection result, Monitoring method. (Appendix 10) A program for causing a computer to execute the monitoring method described in Appendix 9.

Explanation of Signs

[0067] 1 Infrastructure system 2 Infrastructure facility 3 Infrastructure facility monitoring device 4 Output device 5 Optical fiber 6 Optical fiber sensing device 7 Measurement sensor 8 Sensor control device 10 Data acquisition unit 11 Fault detection unit 11a Detection model 12 Output unit 13 Storage unit 20 Monitoring camera 21 Imaging image acquisition unit

Claims

1. Data acquisition means for acquiring first data indicating the distribution of at least one physical quantity in the longitudinal direction of the optical fiber calculated based on the backscattered light of the optical fiber installed in the infrastructure facility, and second data indicating the at least one physical quantity detected by the measurement sensor installed in the infrastructure facility; Fault detection means for detecting a fault in the infrastructure facility based on the first data and the second data; Output means for outputting the detection result by the fault detection means; Including Monitoring system.

2. The fault detection means determines the reliability of the first data by comparing the first data with the second data. The monitoring system according to claim 1.

3. The fault detected by the fault detection means includes a fault occurring in the infrastructure facility and a fault that may occur in the infrastructure facility in the future. The monitoring system according to claim 1.

4. Further including imaging image acquisition means for acquiring an imaging image of the infrastructure facility, The fault detection means detects the fault based on the first data, the second data, and the imaging image. The monitoring system according to claim 1.

5. The output means superimposes and outputs the location where the fault detected by the fault detection means occurs and at least one of a map, a power system diagram, and a weather map. The monitoring system according to claim 1.

6. The measurement sensor is arranged near the optical fiber. The monitoring system according to claim 1.

7. The at least one physical quantity includes any one of vibration, sound, temperature, and strain. The monitoring system according to claim 1.

8. Data acquisition means for acquiring first data indicating the distribution of at least one physical quantity in the longitudinal direction of the optical fiber calculated based on the backscattered light of the optical fiber installed in the infrastructure facility, and second data indicating the at least one physical quantity detected by the measurement sensor installed in the infrastructure facility; Fault detection means for detecting a fault in the infrastructure facility based on the first data and the second data; Output means for outputting the detection result by the fault detection means; Including Monitoring device.

9. Obtain first data indicating a distribution of at least one physical quantity in the longitudinal direction of the optical fiber calculated based on the backscattered light of the optical fiber installed in the infrastructure facility, and second data indicating the at least one physical quantity detected by a measurement sensor installed in the infrastructure facility. Based on the first data and the second data, detect a failure of the infrastructure facility. Output the detection result. Monitoring method.

10. A program for causing a computer to execute the monitoring method according to Claim 9.

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