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

Abstract

The degradation discrimination system according to the present disclosure comprises: an optical fiber cable (20) laid on power poles (10); a communication unit (31) for receiving an optical signal from an optical fiber (21) included in the optical fiber cable (20); a detection unit (32) for detecting, on the basis of the optical signal received by the communication unit (31), vibration generated in the power poles (10); and a discrimination unit (41) for discriminating the degradation of the power poles (10) on the basis of the frequency of vibration generated in a specific period and included in the vibration detected by the detection unit (32).

Description

[Technical field]

[0001] The present disclosure relates to a deterioration determination system, a deterioration determination device, and a deterioration determination method for determining deterioration of a utility pole. [Background technology]

[0002] There is a method for diagnosing the deterioration of utility poles using optical fiber sensing technology. One example is a method for diagnosing the deterioration of a utility pole by striking the utility pole, extracting vibration components from an optical fiber cable installed on the utility pole, and analyzing the extracted vibration components. The technology for striking the utility pole and analyzing the vibration components is disclosed in, for example, Patent Document 1.

[0003] Utility poles have their own unique frequency depending on the type of pole, so by analyzing the unique frequency depending on the type of pole and the frequency that occurs when the pole is struck, it is possible to diagnose the deterioration of the pole. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] International Publication No. 2020 / 044648 Summary of the Invention [Problem to be solved by the invention]

[0005] As mentioned above, there is a method to diagnose the deterioration of utility poles by striking them. However, this method requires a person to go around and strike each utility pole to be inspected one by one, which results in high labor costs.

[0006] Therefore, an object of the present disclosure is to provide a deterioration determination system, a deterioration determination device, and a deterioration determination method that can solve the above-mentioned problems and perform deterioration diagnosis of utility poles while reducing human costs. [Means for solving the problem]

[0007] A deterioration determination system according to one aspect includes: A fiber optic cable installed on a utility pole; a communication unit that receives an optical signal from an optical fiber included in the optical fiber cable; A detection unit that detects vibrations generated in the utility pole based on the optical signal received by the communication unit; A discrimination unit that discriminates deterioration of the utility pole based on a vibration frequency of the vibration that occurred during a specific period among the vibrations detected by the detection unit; Equipped with.

[0008] A deterioration determination device according to one aspect includes: A communication unit that receives an optical signal from an optical fiber included in an optical fiber cable installed on a utility pole; A detection unit that detects vibrations generated in the utility pole based on the optical signal received by the communication unit; A discrimination unit that discriminates deterioration of the utility pole based on a vibration frequency of the vibration that occurred during a specific period among the vibrations detected by the detection unit; Equipped with.

[0009] A deterioration determination method according to one aspect includes the steps of: A deterioration determination method using a deterioration determination device, comprising: A receiving step of receiving an optical signal from an optical fiber included in an optical fiber cable installed on a utility pole; a detection step of detecting vibrations generated in the utility pole based on the optical signal received in the receiving step; a determination step of determining deterioration of the utility pole based on a vibration frequency of the vibration that occurred during a specific period among the vibrations detected in the detection step; Includes. Effect of the Invention

[0010] According to the above-mentioned aspects, it is possible to provide a deterioration determination system, a deterioration determination device, and a deterioration determination method that can perform deterioration diagnosis of utility poles while reducing personnel costs. [Brief description of the drawings]

[0011] [Figure 1] 1 is a diagram illustrating an example of the configuration of a deterioration determination system according to a first embodiment. [Diagram 2] FIG. 4 is a diagram showing an example of a correspondence table according to the first embodiment. [Diagram 3] FIG. 13 is a diagram showing an example of a vibration waveform of a utility pole when the utility pole is struck with a hammer. [Figure 4] FIG. 13 is a diagram showing an example of a spectrum of a vibration waveform of a utility pole when the utility pole is struck with a hammer. [Diagram 5] FIG. 13 is a diagram showing an example of a spectrum of a vibration waveform of a utility pole when the utility pole is struck with a hammer. [Figure 6] FIG. 13 is a diagram showing an example of a spectrum of a vibration waveform of a utility pole when the utility pole is struck with a hammer. [Figure 7] 1A and 1B are diagrams showing an example of a vibration waveform of a utility pole when the utility pole is vibrating naturally and a spectrogram of the vibration waveform. [Figure 8] 1A and 1B are diagrams showing an example of a vibration waveform of a utility pole when the utility pole is vibrating naturally and a spectrogram of the vibration waveform. [Figure 9A] FIG. 13 is a diagram showing an example of a tabulation result of peak frequencies extracted when a utility pole is undergoing natural vibration. [Figure 9B] FIG. 13 is a diagram showing an example of a tabulation result of peak frequencies extracted when a utility pole is undergoing natural vibration. [Figure 9C] FIG. 13 is a diagram showing an example of a tabulation result of peak frequencies extracted when a utility pole is undergoing natural vibration. [Figure 9D] FIG. 13 is a diagram showing an example of a tabulation result of peak frequencies extracted when a utility pole is undergoing natural vibration. [Figure 10] FIG. 4 is a diagram showing an example of teacher data according to the first embodiment; [Figure 11] 4 is a flowchart showing an example of the operation flow of the deterioration determination system according to the first embodiment. [Figure 12] FIG. 11 is a diagram illustrating an example of the configuration of a deterioration determination system according to a second embodiment. [Figure 13] 10 is a flowchart showing an example of the operation flow of the deterioration determination system according to the second embodiment. FIG. [Figure 14] FIG. 13 is a diagram illustrating an example of the configuration of a deterioration determination system according to another embodiment. [Figure 15] 1 is a block diagram showing an example of a hardware configuration of a computer that realizes a deterioration determination device according to an embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0012] Hereinafter, an embodiment of the present disclosure will be described with reference to the drawings. Note that the following description and drawings are omitted and simplified as appropriate for clarity of explanation. In addition, in each of the following drawings, the same elements are given the same reference numerals, and duplicate explanations are omitted as necessary.

[0013] <Embodiment 1> Fig. 1 shows a configuration example of a deterioration determination system according to the present embodiment 1. Note that, in Fig. 1, for the sake of simplicity, only three utility poles 10 are shown, but the number of utility poles 10 is not limited to three.

[0014] 1, the deterioration determination system according to the first embodiment includes an optical fiber cable 20, an optical fiber sensing device 30, and a deterioration determination device 40. The optical fiber sensing device 30 includes a communication unit 31 and a detection unit 32, and the deterioration determination device 40 includes a determination unit 41. The deterioration determination device 40 can be placed at a location away from the optical fiber sensing device 30, and can be placed on the cloud, for example.

[0015] The optical fiber cable 20 is laid on the utility pole 10. The optical fiber cable 20 is a cable including one or more optical fibers 21, and one end is connected to a communication unit 31 in the optical fiber sensing device 30. The optical fiber 21 may be an optical fiber dedicated to sensing, or may be an optical fiber used for both communication and sensing. When the optical fiber 21 is an optical fiber used for both communication and sensing, the optical signal for sensing is split by a filter (not shown) in the stage preceding the communication unit 31 so that only the optical signal for sensing can be received by the communication unit 31.

[0016] The communication unit 31 inputs pulsed light into the optical fiber 21 included in the optical fiber cable 20, and receives backscattered light generated as the pulsed light is transmitted through the optical fiber 21 as an optical signal (optical signal for sensing; the same applies below).

[0017] When vibrations occur in the utility pole 10, the vibrations of the utility pole 10 are transmitted to the optical fiber cable 20. As a result, the characteristics (for example, wavelength) of the optical signal transmitted through the optical fiber 21 included in the optical fiber cable 20 change.

[0018] Therefore, the detection unit 32 can detect vibrations occurring in the utility pole 10 based on the optical signal received by the communication unit 31 from the optical fiber 21.

[0019] Furthermore, the detection unit 32 can identify the position where the optical signal was generated (the distance of the optical fiber 21 from the communication unit 31) based on the time difference between the time when the communication unit 31 inputs the pulsed light to the optical fiber 21 and the time when the communication unit 31 receives the optical signal from the optical fiber 21. Therefore, the detection unit 32 can identify which utility pole 10 the optical signal was generated from by checking the position where the optical signal was generated against the correspondence table shown in FIG. 2. In other words, when the detection unit 32 detects vibration generated in the utility pole 10, it can identify which utility pole 10 the vibration was generated in. Note that the correspondence table in FIG. 2 associates the utility pole number of the utility pole 10 with the model of the utility pole 10 and the distance of the optical fiber 21 from the communication unit 31, but the model of the utility pole 10 may be associated arbitrarily. Furthermore, the correspondence table in FIG. 2 may be stored in advance in a memory or the like (not shown).

[0020] Here, the vibration waveform of the vibration of the utility pole 10 detected by the detection unit 32 is a specific vibration waveform according to the type and deterioration state of the utility pole 10, as will be described later. Therefore, the discrimination unit 41 discriminates the deterioration of the utility pole 10 based on the vibration of the utility pole 10 detected by the detection unit 32.

[0021] A method for determining the deterioration of the utility pole 10 in the determining unit 41 will be described in detail below. <Verification of vibration waveform of utility pole 10> First, the inventors examined the vibration waveform of the utility pole 10. The results of the examination will be described below.

[0022] First, the inventors classified the utility poles 10 into one of the following two types of labels depending on the deterioration state. ·"deterioration": Utility poles with vertical cracks or leaking lime or rust ·"normal": Normal utility pole The label classification can be made with a plurality of labels in accordance with the deterioration state other than "deteriorated" and "normal."

[0023] Next, the inventors observed the vibration waveform for each utility pole 10 when striking the utility pole 10 with a hammer. Here, the inventors struck a utility pole 10 with a hammer and observed the spectrum of the vibration waveform immediately after the strike.

[0024] Fig. 3 shows an example of a vibration waveform when a utility pole 10 of type "A" and labeled "normal" is struck with a hammer. In Fig. 3, the horizontal axis indicates time, and the vertical axis indicates vibration intensity.

[0025] FIG. 4 shows an example of the spectrum of the vibration waveform immediately after hitting a utility pole 10 of type "A" and labeled "normal" with a hammer. FIG. 4 shows the spectrum of the vibration waveform of each of two utility poles 10 of type "A" and labeled "normal". Similarly, FIG. 5 shows an example of the spectrum of the vibration waveform of each of two utility poles 10 of type "A" and labeled "deteriorated". Also, FIG. 6 shows an example of the spectrum of the vibration waveform of one utility pole 10 of type "B" and labeled "deteriorated". In FIG. 4 to FIG. 6, the horizontal axis indicates frequency, and the vertical axis indicates vibration intensity. Also, FIG. 4 to FIG. 6 show the average value and variance of vibration intensity versus frequency for multiple hits with a hammer.

[0026] For example, comparing Fig. 4 and Fig. 5, it can be seen that even for utility poles 10 of the same model "A", if the deterioration state is different, the vibration frequency at which the vibration intensity reaches its peak (hereinafter referred to as the peak frequency) will be different. Specifically, in the "normal" utility pole 10 shown in Fig. 4, a peak frequency appears at 42 Hz. In contrast, in the "deteriorated" utility pole 10 shown in Fig. 5, a peak frequency appears at 37 Hz to 38 Hz.

[0027] Furthermore, for example, comparing Figure 5 with Figure 6, it can be seen that even utility poles 10 with the same "deteriorated" label have different peak frequencies if their models are different. Specifically, the utility pole 10 of model "A" shown in Figure 5 has a peak frequency at 37 Hz to 38 Hz. In contrast, the utility pole 10 of model "B" shown in Figure 6 has a peak frequency at 44 Hz to 45 Hz.

[0028] As described above, the inventors have confirmed that the peak frequency in the spectrum of the vibration waveform when the utility pole 10 is struck with a hammer varies depending on the type of utility pole 10 and further varies depending on the deterioration state of the utility pole 10.

[0029] Next, the inventors observed the vibration waveform of each utility pole 10 when that utility pole 10 was vibrating naturally. FIG. 7 shows an example of a vibration waveform of a utility pole 10 of type "A" and labeled "normal" and a spectrogram of the vibration waveform. In FIG. 7, the upper diagram shows the vibration waveform, and the lower diagram shows a spectrogram of the vibration waveform. In the upper diagram of FIG. 7, the horizontal axis shows time, and the vertical axis shows vibration intensity. In the lower diagram of FIG. 7, the horizontal axis shows time, and the vertical axis shows frequency. Similarly, FIG. 8 shows an example of a vibration waveform of a utility pole 10 of type "A" and labeled "deteriorated" and a spectrogram of the vibration waveform.

[0030] 7 and 8, it can be seen that high vibration frequency components of about 30 Hz to 50 Hz appear occasionally in the spectrogram of the vibration waveform of the utility pole 10. The high vibration frequency components correspond to the area surrounded by a solid line on the spectrogram of the vibration waveform.

[0031] Therefore, the inventors performed the following at one-second intervals for each utility pole 10, using the vibration waveform when the utility pole 10 was vibrating naturally and the spectrogram of the vibration waveform. The time periods during which the peak frequencies could be extracted correspond to the areas shaded in light colors on the vibration waveforms in Figures 7 and 8. The vibration frequency at which the amplitude intensity is three times or more the average amplitude intensity and is within the range of 30Hz to 50Hz is extracted as the peak frequency.

[0032] 9A to 9D show examples of the results of tallying the peak frequencies extracted when the utility poles 10 are vibrating naturally, for each of four utility poles 10. Note that Figs. 9A to 9D show the label of the utility pole 10, the pole number of the utility pole 10, the number of times each frequency was extracted as a peak frequency, the frequency most frequently extracted as a peak frequency, and the peak frequency when struck with a hammer.

[0033] 9A, for example, when utility pole 10 with utility pole number "1" is vibrating naturally, the frequency extracted most frequently as the peak frequency is 42 Hz, which was extracted 68 times. In addition, when utility pole 10 with utility pole number "1" is struck with a hammer, the peak frequencies are 8 Hz, 9 Hz, 35 Hz, and 42 Hz.

[0034] That is, in the case of utility pole 10 with utility pole number "1," the frequency of 42 Hz that was most frequently extracted as the peak frequency during natural vibration coincides with 42 Hz, which is one of the peak frequencies when struck with a hammer. A similar tendency was confirmed in utility poles 10 with other utility pole numbers.

[0035] As described above, the inventors have confirmed that the frequencies that are frequently extracted as peak frequencies when the utility pole 10 is vibrating naturally tend to match the peak frequencies when the utility pole 10 is struck with a hammer.

[0036] <Method of determining deterioration of utility pole 10> As described above, the frequency that is extracted frequently as a peak frequency when the utility pole 10 is vibrating naturally tends to match the peak frequency when the utility pole 10 is struck with a hammer.

[0037] Therefore, even without striking the utility pole 10 with a hammer to generate artificial vibrations, it is possible to determine the deterioration of the utility pole 10 by using, for example, the vibration waveform of the utility pole 10 when it is vibrating naturally.

[0038] Therefore, the discrimination unit 41 discriminates the deterioration of the utility pole 10 based on the vibration frequency of the vibration that occurred during a specific period among the vibrations of the utility pole 10 detected by the detection unit 32. The specific period is a period that includes the time when the vibration intensity of the vibration of the utility pole 10 becomes equal to or greater than a predetermined value. The predetermined value of the vibration intensity can be, for example, a value that is equal to or greater than three times the average value of the amplitude intensity, as in the above example, but is not limited to this.

[0039] In detail, each time the vibration intensity of the vibration of the utility pole 10 detected by the detection unit 32 becomes equal to or greater than a predetermined value during a specific period, the discrimination unit 41 extracts the vibration frequency at which the vibration intensity becomes equal to or greater than the predetermined value, and discriminates the deterioration of the utility pole 10 based on the vibration frequency that is extracted most frequently. More specifically, each time the vibration intensity of the vibration of the utility pole 10 detected by the detection unit 32 becomes equal to or greater than a predetermined value during a specific period, the discrimination unit 41 extracts the vibration frequency at which the vibration intensity becomes equal to or greater than the predetermined value and that is within a predetermined frequency range, and discriminates the deterioration of the utility pole 10 based on the vibration frequency that is extracted most frequently. The predetermined frequency range may be a high frequency range equivalent to the peak frequency when the utility pole 10 is struck, for example, a range of about 30 Hz to 50 Hz as in the above example, but is not limited to this.

[0040] At this time, the discrimination unit 41 may discriminate the deterioration of the utility pole 10 by using a learning model trained with different teacher data according to the type of the utility pole 10. The learning model is, for example, a learning model based on a Convolutional Neural Network (CNN), and may be stored in advance in a memory (not shown) or the like.

[0041] Fig. 10 is a diagram showing an example of training data used for learning the learning model. The training data shown in Fig. 10 is training data consisting of a set of the type of utility pole 10, the vibration waveform of the utility pole 10, and the deterioration state of the utility pole 10.

[0042] When the discrimination unit 41 uses the above-mentioned learning model, a pair of the type of utility pole 10 and the vibration waveform of the utility pole 10 is input to the learning model. If a correspondence table like that in Fig. 2 is stored in advance in a memory or the like (not shown), the type of utility pole 10 can be read from the correspondence table. The discrimination unit 41 can obtain the deterioration state of the utility pole 10 as an output result of the learning model in response to the above-mentioned input.

[0043] 10, the teacher data is a set of the type of utility pole 10, the vibration waveform of the utility pole 10, and the deterioration state of the utility pole 10, but is not limited to this. The discrimination unit 41 may derive a vibration frequency that is extracted as a peak frequency frequently based on the vibration waveform of the utility pole 10, and use the derived vibration frequency as teacher data instead of the vibration waveform of the utility pole 10.

[0044] Next, with reference to FIG. 11, an example of the flow of operations of the deterioration determination system according to the first embodiment will be described. As shown in FIG. 11, the communication unit 31 receives an optical signal from the optical fiber 21 included in the optical fiber cable 20 (step S11).

[0045] Next, the detection unit 32 detects the vibrations occurring in the utility pole 10 based on the optical signal received by the communication unit 31 (step S12). Thereafter, the discrimination unit 41 discriminates the deterioration of the utility pole 10 based on the vibration frequency of the vibration that occurred during a specific period among the vibrations detected by the detection unit 32 (step S13).

[0046] As described above, according to the first embodiment, the communication unit 31 receives an optical signal from the optical fiber 21. The detection unit 32 detects vibrations generated in the utility pole 10 based on the optical signal received by the communication unit 31. The discrimination unit 41 discriminates deterioration of the utility pole 10 based on the vibration frequency of vibrations generated during a specific period among the vibrations detected by the detection unit 32.

[0047] Therefore, it is possible to determine the deterioration of the utility pole 10 without generating artificial vibrations by striking the utility pole 10 with a hammer. This makes it possible to perform deterioration diagnosis of the utility pole 10 while reducing personnel costs.

[0048] <Embodiment 2> Next, with reference to FIG. 12, a configuration example of a deterioration determination system according to the second embodiment will be described.

[0049] As shown in FIG. 12, the deterioration determination system of this embodiment 2 differs from the configuration of FIG. 1 of the above-mentioned embodiment 1 in that an alarm unit 42 is added inside the deterioration determination device 40.

[0050] The notification unit 42 notifies a predetermined notification destination of the deterioration state of the utility pole 10 determined by the determination unit 41. The predetermined notification destination may be, for example, a terminal carried by a monitor who monitors the utility pole 10, or a terminal installed in a monitoring center. The notification method may be, for example, a method of displaying a GUI (Graphical User Interface) screen on a display or monitor of the notification destination terminal, or a method of outputting a message by voice from a speaker of the notification destination terminal. The notification unit 42 may also notify the deterioration state of the utility pole 10 only when the deterioration degree of the utility pole 10 is equal to or greater than a threshold value.

[0051] Next, an example of the flow of operations of the deterioration determination system according to the second embodiment will be described with reference to FIG. As shown in FIG. 13, first, the processes of steps S21 to S23 similar to steps S11 to S13 in FIG. 11 of the above-mentioned first embodiment are performed. Thereafter, the notification unit 42 notifies a predetermined notification destination of the deterioration state of the utility pole 10 determined by the determination unit 41 (step S24).

[0052] As described above, according to the second embodiment, the notification unit 42 notifies a predetermined notification destination of the deterioration state of the utility pole 10 determined by the determination unit 41. This makes it possible to notify the monitor who monitors the utility pole 10 or a monitoring center of the deterioration state of the utility pole 10. The other effects are the same as those of the first embodiment described above.

[0053] <Other embodiments> In the embodiment described above, the communication unit 31 and the detection unit 32 are separated from the deterioration determination device 40, but this is not limited thereto. The communication unit 31 and the detection unit 32 may be provided inside the deterioration determination device 40. Fig. 14 shows an example of the configuration of a deterioration determination system in which the communication unit 31 and the detection unit 32 are provided inside the deterioration determination device 40. Note that the deterioration determination system shown in Fig. 14 may further include a notification unit 42 inside the deterioration determination device 40, as in the second embodiment described above.

[0054] In the above-described embodiment, one communication unit 31 and one detection unit 32 are provided, but the present invention is not limited to this. For example, when a plurality of optical fibers 21 are provided, a plurality of communication units 31 and a plurality of detection units 32 may be provided corresponding to the plurality of optical fibers 21, respectively. Also, a plurality of discrimination units 41 may be provided corresponding to the plurality of optical fibers 21, respectively.

[0055] <Hardware configuration of the deterioration determination device according to the embodiment> FIG. 15 shows an example of the hardware configuration of a computer 50 that realizes the deterioration determination device 40 according to the above-described embodiment.

[0056] 15, the computer 50 includes a processor 501, a memory 502, a storage 503, an input / output interface (input / output I / F) 504, and a communication interface (communication I / F) 505. The processor 501, the memory 502, the storage 503, the input / output interface 504, and the communication interface 505 are connected by a data transmission path for transmitting and receiving data to and from each other.

[0057] The processor 501 is, for example, a processing device such as a central processing unit (CPU) or a graphics processing unit (GPU). The memory 502 is, for example, a random access memory (RAM) or a read only memory (ROM). The storage 503 is, for example, a storage device such as a hard disk drive (HDD), a solid state drive (SSD), or a memory card. The storage 503 may also be a memory such as a RAM or a ROM.

[0058] Storage 503 stores programs for realizing the functions of the components of deterioration determination device 40. Processor 501 executes each of these programs to realize the functions of the components of deterioration determination device 40. When executing each of the above programs, processor 501 may read these programs onto memory 502 before executing them, or may execute them without reading them onto memory 502. Memory 502 and storage 503 also serve to store information and data held by the components of deterioration determination device 40.

[0059] The above-mentioned program can be stored using various types of non-transitory computer readable media and can be supplied to a computer (including the computer 50). The non-transitory computer readable medium includes various types of tangible storage media. Examples of the non-transitory computer readable medium include magnetic recording media (e.g., flexible disks, magnetic tapes, hard disk drives), magneto-optical recording media (e.g., magneto-optical disks), CD-ROMs (Compact Disc-ROMs), CD-Rs (CD-Recordable), CD-R / Ws (CD-ReWritable), semiconductor memories (e.g., mask ROMs, PROMs (Programmable ROMs), EPROMs (Erasable PROMs), flash ROMs, and RAMs. The program can also be supplied to a computer by various types of transitory computer readable media. Examples of the transitory computer readable medium include electric signals, optical signals, and electromagnetic waves. The transitory computer readable medium can supply the program to a computer via a wired communication path such as an electric wire and an optical fiber, or via a wireless communication path.

[0060] The input / output interface 504 is connected to a display device 5041, an input device 5042, a sound output device 5043, and the like. The display device 5041 is a device that displays a screen corresponding to drawing data processed by the processor 501, such as an LCD (Liquid Crystal Display), a CRT (Cathode Ray Tube) display, or a monitor. The input device 5042 is a device that accepts an operation input by an operator, and is, for example, a keyboard, a mouse, or a touch sensor. The display device 5041 and the input device 5042 may be integrated and realized as a touch panel. The sound output device 5043 is a device that acoustically outputs a sound corresponding to the sound data processed by the processor 501, such as a speaker.

[0061] The communication interface 505 transmits and receives data to and from an external device. For example, the communication interface 505 communicates with the external device via a wired communication path or a wireless communication path.

[0062] Although the present disclosure has been described above with reference to the embodiments, the present disclosure is not limited to the above-described embodiments. Various modifications that can be understood by a person skilled in the art can be made to the configuration and details of the present disclosure within the scope of the present disclosure. For example, the above-described embodiments may be used in combination with one another in whole or in part.

[0063] Furthermore, some or all of the above-described embodiments can be described as, but are not limited to, the following supplementary notes. (Appendix 1) A fiber optic cable installed on a utility pole; a communication unit that receives an optical signal from an optical fiber included in the optical fiber cable; A detection unit that detects vibrations generated in the utility pole based on the optical signal received by the communication unit; A discrimination unit that discriminates deterioration of the utility pole based on a vibration frequency of the vibration that occurred during a specific period among the vibrations detected by the detection unit; A deterioration determination system comprising: (Appendix 2) the specific period is a period including a time when the vibration intensity of the vibration detected by the detection unit becomes equal to or greater than a predetermined value, The discrimination unit extracts a vibration frequency at which the vibration intensity of the vibration detected by the detection unit becomes equal to or greater than the predetermined value during the specific period, and discriminates the deterioration of the utility pole based on the vibration frequency that is extracted most frequently. 2. A deterioration determination system as described in appendix 1. (Appendix 3) The discrimination unit extracts a vibration frequency that is within a predetermined frequency range when the vibration intensity of the vibration detected by the detection unit becomes equal to or greater than the predetermined value during the specific period, and discriminates the deterioration of the utility pole based on the vibration frequency that is extracted frequently. 2. A deterioration determination system as described in appendix 2. (Appendix 4) The discrimination unit discriminates the deterioration of the utility pole by using a learning model trained with different teacher data depending on the type of the utility pole. 4. A deterioration determination system according to any one of claims 1 to 3. (Appendix 5) Further, a notification unit is provided that notifies a predetermined notification destination of the deterioration state of the utility pole determined by the determination unit. 5. A deterioration determination system according to any one of claims 1 to 4. (Appendix 6) A communication unit that receives an optical signal from an optical fiber included in an optical fiber cable installed on a utility pole; A detection unit that detects vibrations generated in the utility pole based on the optical signal received by the communication unit; A discrimination unit that discriminates deterioration of the utility pole based on a vibration frequency of the vibration that occurred during a specific period among the vibrations detected by the detection unit; A deterioration determination device comprising: (Appendix 7) the specific period is a period including a time when the vibration intensity of the vibration detected by the detection unit becomes equal to or greater than a predetermined value, The discrimination unit extracts a vibration frequency at which the vibration intensity of the vibration detected by the detection unit becomes equal to or greater than the predetermined value during the specific period, and discriminates the deterioration of the utility pole based on the vibration frequency that is extracted most frequently. 7. The deterioration determination device according to claim 6. (Appendix 8) The discrimination unit extracts a vibration frequency that is within a predetermined frequency range when the vibration intensity of the vibration detected by the detection unit becomes equal to or greater than the predetermined value during the specific period, and discriminates the deterioration of the utility pole based on the vibration frequency that is extracted frequently. 8. The deterioration determination device according to claim 7. (Appendix 9) The discrimination unit discriminates the deterioration of the utility pole by using a learning model trained with different teacher data depending on the type of the utility pole. 9. The deterioration determination device according to claim 6, (Appendix 10) Further, a notification unit is provided that notifies a predetermined notification destination of the deterioration state of the utility pole determined by the determination unit. 10. The deterioration determination device according to claim 6, (Appendix 11) A deterioration determination method using a deterioration determination device, comprising: A receiving step of receiving an optical signal from an optical fiber included in an optical fiber cable installed on a utility pole; a detection step of detecting vibrations generated in the utility pole based on the optical signal received in the receiving step; a determination step of determining deterioration of the utility pole based on a vibration frequency of the vibration that occurred during a specific period among the vibrations detected in the detection step; A deterioration determination method comprising: (Appendix 12) the specific period is a period including a time when the vibration intensity of the vibration detected in the detection step becomes equal to or greater than a predetermined value, In the determination step, each time the vibration intensity of the vibration detected in the detection step becomes equal to or greater than the predetermined value during the specific period, a vibration frequency at which the vibration intensity becomes equal to or greater than the predetermined value is extracted, and deterioration of the utility pole is determined based on the vibration frequency that is extracted most frequently. 12. A method for determining deterioration as described in appendix 11. (Appendix 13) In the determination step, each time the vibration intensity of the vibration detected in the detection step becomes equal to or greater than the predetermined value during the specific period, a vibration frequency at which the vibration intensity of the vibration becomes equal to or greater than the predetermined value and which is within a predetermined frequency range is extracted, and deterioration of the utility pole is determined based on the vibration frequency that is extracted most frequently. 13. A method for determining deterioration as described in appendix 12. (Appendix 14) In the determining step, deterioration of the utility pole is determined using a learning model trained with different teacher data depending on the type of the utility pole. 14. A deterioration determination method according to any one of claims 11 to 13. (Appendix 15) The deterioration state of the utility pole determined in the determination step is further included in a notification step of notifying a predetermined notification destination. A deterioration determination method according to any one of appendixes 11 to 14. [Explanation of symbols]

[0064] 10. Electric pole 20 Optical fiber cable 21 Optical Fiber 30 Optical fiber sensing equipment 31 Communications Department 32 Detection unit 40 Deterioration detection device 41 Discrimination part 42 Notification Department 50 Computer 501 Processor 502 Memory 503 Storage 504 Input / Output Interface 5041 Display device 5042 Input Device 5043 Sound output device 505 Communication Interface

Claims

1. A fiber optic cable installed on a utility pole; a communication unit that receives an optical signal from an optical fiber included in the optical fiber cable; A detection unit that detects vibrations generated in the utility pole based on the optical signal received by the communication unit; A discrimination unit that discriminates deterioration of the utility pole based on a vibration frequency of the vibration that occurred during a specific period among the vibrations detected by the detection unit; Equipped with the specific period is a period including a time when the vibration intensity of the vibration detected by the detection unit becomes equal to or greater than a predetermined value, The discrimination unit extracts a vibration frequency at which the vibration intensity of the vibration detected by the detection unit becomes equal to or greater than the predetermined value during the specific period, and discriminates the deterioration of the utility pole based on the vibration frequency that is extracted most frequently. Deterioration detection system.

2. The discrimination unit extracts a vibration frequency that is within a predetermined frequency range when the vibration intensity of the vibration detected by the detection unit becomes equal to or greater than the predetermined value during the specific period, and discriminates the deterioration of the utility pole based on the vibration frequency that is extracted frequently. The deterioration determination system according to claim 1 .

3. The discrimination unit discriminates the deterioration of the utility pole by using a learning model trained with different teacher data depending on the type of the utility pole. The deterioration determination system according to claim 1 or 2.

4. Further, a notification unit is provided that notifies a predetermined notification destination of the deterioration state of the utility pole determined by the determination unit. The deterioration determination system according to claim 1 .

5. A communication unit that receives an optical signal from an optical fiber included in an optical fiber cable installed on a utility pole; A detection unit that detects vibrations generated in the utility pole based on the optical signal received by the communication unit; A discrimination unit that discriminates deterioration of the utility pole based on a vibration frequency of the vibration that occurred during a specific period among the vibrations detected by the detection unit; Equipped with the specific period is a period including a time when the vibration intensity of the vibration detected by the detection unit becomes equal to or greater than a predetermined value, The discrimination unit extracts a vibration frequency at which the vibration intensity of the vibration detected by the detection unit becomes equal to or greater than the predetermined value during the specific period, and discriminates the deterioration of the utility pole based on the vibration frequency that is extracted most frequently. Deterioration detection device.

6. The discrimination unit extracts a vibration frequency that is within a predetermined frequency range when the vibration intensity of the vibration detected by the detection unit becomes equal to or greater than the predetermined value during the specific period, and discriminates the deterioration of the utility pole based on the vibration frequency that is extracted frequently. The deterioration determination device according to claim 5 .

7. The discrimination unit discriminates the deterioration of the utility pole by using a learning model trained with different teacher data depending on the type of the utility pole. The deterioration determination device according to claim 5 or 6.

8. Further, a notification unit is provided that notifies a predetermined notification destination of the deterioration state of the utility pole determined by the determination unit. The deterioration determination device according to any one of claims 5 to 7.

9. A deterioration determination method using a deterioration determination device, comprising: A receiving step of receiving an optical signal from an optical fiber included in an optical fiber cable installed on a utility pole; a detection step of detecting vibrations generated in the utility pole based on the optical signal received in the receiving step; a determination step of determining deterioration of the utility pole based on a vibration frequency of the vibration that occurred during a specific period among the vibrations detected in the detection step; Including, the specific period is a period including a time when the vibration intensity of the vibration detected in the detection step becomes equal to or greater than a predetermined value, In the determination step, each time the vibration intensity of the vibration detected in the detection step becomes equal to or greater than the predetermined value during the specific period, a vibration frequency at which the vibration intensity becomes equal to or greater than the predetermined value is extracted, and deterioration of the utility pole is determined based on the vibration frequency that is extracted most frequently. Deterioration determination method.

10. In the determination step, each time the vibration intensity of the vibration detected in the detection step becomes equal to or greater than the predetermined value during the specific period, a vibration frequency at which the vibration intensity of the vibration becomes equal to or greater than the predetermined value and which is within a predetermined frequency range is extracted, and deterioration of the utility pole is determined based on the vibration frequency that is extracted most frequently. The deterioration determination method according to claim 9.

11. In the determining step, deterioration of the utility pole is determined using a learning model trained with different teacher data depending on the type of the utility pole. The deterioration determination method according to claim 9 or 10.

12. The deterioration state of the utility pole determined in the determination step is further included in a notification step of notifying a predetermined notification destination. The deterioration determination method according to any one of claims 9 to 11.

Images