WO2022044319A1 - 劣化判別システム、劣化判別装置、及び劣化判別方法 - Google Patents

劣化判別システム、劣化判別装置、及び劣化判別方法 Download PDF

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Publication number
WO2022044319A1
WO2022044319A1 PCT/JP2020/032866 JP2020032866W WO2022044319A1 WO 2022044319 A1 WO2022044319 A1 WO 2022044319A1 JP 2020032866 W JP2020032866 W JP 2020032866W WO 2022044319 A1 WO2022044319 A1 WO 2022044319A1
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WIPO (PCT)
Prior art keywords
vibration
deterioration
utility pole
unit
frequency
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2020/032866
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English (en)
French (fr)
Japanese (ja)
Inventor
忠行 岩野
直人 小倉
博章 古塩
英明 武田
基人 海老原
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NEC Corp
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NEC Corp
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Priority to US18/022,955 priority Critical patent/US12467822B2/en
Priority to PCT/JP2020/032866 priority patent/WO2022044319A1/ja
Priority to JP2022545251A priority patent/JP7613472B2/ja
Publication of WO2022044319A1 publication Critical patent/WO2022044319A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M7/00—Vibration-testing of structures; Shock-testing of structures
    • G01M7/02—Vibration-testing by means of a shake table
    • G01M7/025—Measuring arrangements
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
    • G01H9/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by using radiation-sensitive means, e.g. optical means
    • G01H9/004—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by using radiation-sensitive means, e.g. optical means using fibre optic sensors
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M5/00—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings
    • G01M5/0091—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings by using electromagnetic excitation or detection
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M5/00—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings
    • G01M5/0025—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings of elongated objects, e.g. pipes, masts, towers or railways
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M5/00—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings
    • G01M5/0066—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings by exciting or detecting vibration or acceleration
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
    • H02G1/02—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for overhead lines or cables
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G7/00—Overhead installations of electric lines or cables

Definitions

  • the present disclosure relates to a deterioration discrimination system, a deterioration discrimination device, and a deterioration discrimination method for discriminating deterioration of utility poles.
  • a method of diagnosing deterioration of a utility pole by hitting a utility pole extracting a vibration component from an optical fiber cable laid on the utility pole, and analyzing the extracted vibration component.
  • a technique for analyzing a vibration component by hitting a utility pole is disclosed in, for example, Patent Document 1.
  • the utility pole has a unique frequency depending on the model. Therefore, it is possible to diagnose the deterioration of the utility pole by analyzing the frequency peculiar to the type of the utility pole and the frequency generated when the utility pole is hit.
  • an object of the present disclosure is to provide a deterioration discrimination system, a deterioration discrimination device, and a deterioration discrimination method capable of diagnosing deterioration of utility poles while solving the above-mentioned problems and reducing human costs.
  • the deterioration discrimination system based on one aspect is Optical fiber cables laid on utility poles and A communication unit that receives an optical signal from the optical fiber included in the optical fiber cable, and A detection unit that detects vibration generated on the utility pole based on the optical signal received by the communication unit, and a detection unit.
  • a discrimination unit that determines deterioration of the utility pole based on the vibration frequency of the vibration generated in a specific period, and To prepare for.
  • the deterioration determination device is A communication unit that receives optical signals from the optical fiber included in the optical fiber cable laid on the utility pole, and A detection unit that detects vibration generated on the utility pole based on the optical signal received by the communication unit, and a detection unit. Among the vibrations detected by the detection unit, a discrimination unit that determines deterioration of the utility pole based on the vibration frequency of the vibration generated in a specific period, and To prepare for.
  • the deterioration determination method is It is a deterioration discrimination method using a deterioration discrimination device.
  • a reception step for receiving an optical signal from an optical fiber included in an optical fiber cable laid on a utility pole A detection step for detecting vibration generated in the utility pole based on the optical signal received in the reception step, and a detection step.
  • a determination step for determining deterioration of the utility pole based on the vibration frequency of the vibration generated in a specific period and a determination step. including.
  • FIG. It is a figure which shows the configuration example of the deterioration determination system which concerns on Embodiment 1.
  • FIG. It is a figure which shows the example of the correspondence table which concerns on Embodiment 1.
  • FIG. It is a figure which shows the example of the vibration waveform of the electric pole when the electric pole is hit with a hammer. It is a figure which shows the example of the spectrum of the vibration waveform of the electric pole when the electric pole is hit with a hammer. It is a figure which shows the example of the spectrum of the vibration waveform of the electric pole when the electric pole is hit with a hammer. It is a figure which shows the example of the spectrum of the vibration waveform of the electric pole when the electric pole is hit with a hammer.
  • FIG. It is a figure which shows the example of the aggregation result of the peak frequency extracted when a certain utility pole is vibrating naturally. It is a figure which shows the example of the teacher data which concerns on Embodiment 1.
  • FIG. It is a flow diagram which shows the example of the operation flow of the deterioration determination system which concerns on Embodiment 1.
  • FIG. It is a figure which shows the configuration example of the deterioration determination system which concerns on Embodiment 2.
  • FIG. 1 shows a configuration example of a deterioration determination system according to the first embodiment.
  • FIG. 1 only three utility poles 10 are shown for the sake of simplification of the drawing, but the number of utility poles 10 is not limited to three.
  • the deterioration determination system includes an optical fiber cable 20, an optical fiber sensing device 30, and a deterioration determination device 40. Further, the optical fiber sensing device 30 includes a communication unit 31 and a detection unit 32, and the deterioration discrimination device 40 includes a discrimination unit 41.
  • the deterioration determination device 40 can be arranged at a position away from the optical fiber sensing device 30, and can be arranged, for example, on the cloud.
  • 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 thereof 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 an optical fiber for both communication and sensing.
  • the optical signal for sensing is demultiplexed by a filter (not shown) in front of the communication unit 31, and only the optical signal for sensing is separated by the communication unit 31. To be able to receive with.
  • the communication unit 31 incidents pulsed light on the optical fiber 21 included in the optical fiber cable 20, and emits backscattered light generated by the pulsed light being transmitted through the optical fiber 21 as an optical signal (light for sensing). Received as a signal (hereinafter the same).
  • the vibration of the utility pole 10 is transmitted to the optical fiber cable 20.
  • the characteristics (for example, wavelength) of the optical signal transmitted through the optical fiber 21 included in the optical fiber cable 20 change.
  • the detection unit 32 can detect the vibration generated in the utility pole 10 based on the optical signal received from the optical fiber 21 by the communication unit 31.
  • the detection unit 32 generates the optical signal based on the time difference between the time when the communication unit 31 incidents the pulsed light on the optical fiber 21 and the time when the communication unit 31 receives the optical signal from the optical fiber 21. It is possible to specify the position (distance of the optical fiber 21 from the communication unit 31). Therefore, the detection unit 32 can identify the electric pole 10 on which the optical signal is generated by collating the position where the optical signal is generated with the corresponding table shown in FIG. .. In other words, when the detection unit 32 detects the vibration generated in the utility pole 10, it is possible to specify in which utility pole 10 the vibration is generated. The corresponding table in FIG.
  • the corresponding table of FIG. 2 may be stored in advance in a memory or the like (not shown).
  • the vibration waveform of the vibration of the utility pole 10 detected by the detection unit 32 is a unique vibration waveform according to the model and the 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.
  • the present inventors classified the utility pole 10 into one of the following two types of labels according to the deterioration state.
  • ⁇ deterioration
  • ⁇ Normal
  • Normal utility pole label classification can be classified by multiple labels according to the deterioration state, in addition to "deterioration” and "normal".
  • the present inventors observed the vibration waveform of each utility pole 10 when the utility pole 10 was hit with a hammer.
  • the present inventors applied a hammer to the utility pole 10 and observed the spectrum of the vibration waveform immediately after the impact.
  • FIG. 3 shows an example of a vibration waveform when a hammer hits a utility pole 10 with a model "A" and a label "normal".
  • the horizontal axis represents time and the vertical axis represents vibration intensity.
  • FIG. 4 shows an example of the spectrum of the vibration waveform immediately after the electric pole 10 of the model “A” and the label “normal” is hit with a hammer.
  • FIG. 4 shows the spectra of the vibration waveforms of the two utility poles 10 of the model “A” and labeled “normal”.
  • FIG. 5 shows an example of the spectrum of the vibration waveform of each of the two utility poles 10 labeled "deteriorated" in model "A”.
  • FIG. 6 shows an example of the spectrum of the vibration waveform of one utility pole 10 of the model “B” and the label “deterioration”.
  • the horizontal axis indicates the frequency and the vertical axis indicates the vibration intensity.
  • FIGS. 4 to 6 show the average value and the dispersion value of the vibration intensity with respect to the frequency for a plurality of times of hitting with a hammer.
  • the peak frequency the vibration frequency at which the vibration intensity peaks
  • the peak frequency the vibration frequency at which the vibration intensity peaks
  • the present inventors have different peak frequencies depending on the model of the utility pole 10 in the spectrum of the vibration waveform when the utility pole 10 is hit with a hammer, and further, the deterioration state of the utility pole 10 It was confirmed that it was different depending on the situation.
  • FIG. 7 shows an example of the vibration waveform of the utility pole 10 of the model “A” and the label “normal” and the spectrogram of the vibration waveform.
  • the upper figure shows the vibration waveform
  • the lower figure shows the spectrogram of the vibration waveform.
  • the horizontal axis represents time and the vertical axis represents vibration intensity.
  • the horizontal axis represents time and the vertical axis represents frequency.
  • FIG. 8 shows an example of the vibration waveform of the utility pole 10 of the model “A” and the label “deterioration” and the spectrogram of the vibration waveform.
  • the present inventors performed the following for each utility pole 10 at 1-second intervals using the vibration waveform when the utility pole 10 is naturally vibrating and the spectrogram of the vibration waveform.
  • the time zone in which the peak frequency can be extracted corresponds to the portion colored in a light color on the vibration waveforms of FIGS. 7 and 8. -The vibration frequency when the amplitude intensity of 3 times or more of the average value of the amplitude intensity appears and is in the range of 30 Hz to 50 Hz is extracted as the peak frequency.
  • FIGS. 9A to 9D show an example of the aggregated result of the peak frequency extracted when the utility pole 10 is naturally vibrating for each of the four utility poles 10.
  • the label of the utility pole 10, the utility pole number of the utility pole 10, the number of extractions in which each frequency was extracted as the peak frequency, the frequency extracted most as the peak frequency, and the impact with a hammer were applied. Shows the peak frequency at the time.
  • the frequency extracted most as the peak frequency is 42 Hz extracted 68 times.
  • the utility pole 10 having the utility pole number "1” has peak frequencies of 8 Hz, 9 Hz, 35 Hz, and 42 Hz when hit with a hammer.
  • the frequency 42 Hz extracted most as the peak frequency during natural vibration is one of the peak frequencies when hit with a hammer. It matches 42Hz. A similar tendency was confirmed in utility poles 10 with other utility pole numbers.
  • the present inventors have extracted the frequency as the peak frequency when the utility pole 10 is vibrating naturally, which is the peak frequency when the utility pole 10 is hit with a hammer. Confirmed that it tends to match.
  • the deterioration of the utility pole 10 can be prevented by using the vibration waveform of the vibration when the utility pole 10 is naturally vibrating. It becomes possible to discriminate.
  • the discrimination unit 41 discriminates the deterioration of the utility pole 10 based on the vibration frequency of the vibration generated in the specific period among the vibrations of the utility pole 10 detected by the detection unit 32.
  • the specific period is a period including when the vibration intensity of the vibration of the utility pole 10 becomes a predetermined value or more.
  • the predetermined value of the vibration intensity may be, for example, a value three times or more the average value of the amplitude intensity, as in the above-mentioned example, but is not limited to this.
  • the discriminating unit 41 extracts the vibration frequency when the vibration intensity becomes a predetermined value or more each time the vibration intensity of the utility pole 10 detected by the detection unit 32 becomes a predetermined value or more in a specific period. Then, the deterioration of the utility pole 10 is determined based on the vibration frequency with a large number of extractions. More specifically, the discriminating unit 41 determines the vibration frequency when the vibration intensity becomes the predetermined value or more each time the vibration intensity of the vibration of the electric column 10 detected by the detection unit 32 becomes the predetermined value or more in the specific period. Therefore, the vibration frequency within a predetermined frequency range is extracted, and the deterioration of the electric column 10 is determined based on the vibration frequency having a large number of extractions.
  • the predetermined frequency range may be a high frequency range equivalent to the peak frequency when the utility pole 10 is hit, for example, a range of about 30 Hz to 50 Hz as in the above-mentioned example. Not limited.
  • the discrimination unit 41 may discriminate the deterioration of the utility pole 10 by using a learning model trained by different teacher data according to the model 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.
  • CNN convolutional neural network
  • FIG. 10 is a diagram showing an example of teacher data used for learning a learning model.
  • the teacher data shown in FIG. 10 is teacher data composed of a set of a model of the utility pole 10, a vibration waveform of the utility pole 10, and a deteriorated state of the utility pole 10.
  • the discrimination unit 41 inputs a set of the model of the utility pole 10 and the vibration waveform of the utility pole 10 into the learning model. If the corresponding table as shown in FIG. 2 is stored in advance in a memory (not shown) or the like, the model of the utility pole 10 may be read from the corresponding table. The discrimination unit 41 can obtain the deterioration state of the utility pole 10 as the output result of the learning model for the above input.
  • the teacher data is the teacher data consisting of a set of the model of the utility pole 10, the vibration waveform of the utility pole 10, and the deterioration state of the utility pole 10, but the data is not limited to this.
  • the discrimination unit 41 derives a vibration frequency extracted as a peak frequency with a large number of extractions based on the vibration waveform of the utility pole 10, and uses the derived vibration frequency as teacher data instead of the vibration waveform of the utility pole 10. Is also good.
  • the communication unit 31 receives an optical signal from the optical fiber 21 included in the optical fiber cable 20 (step S11).
  • the detection unit 32 detects the vibration generated in the utility pole 10 based on the optical signal received by the communication unit 31 (step S12). After that, the discrimination unit 41 discriminates the deterioration of the utility pole 10 based on the vibration frequency of the vibration generated in the specific period among the vibrations detected by the detection unit 32 (step S13).
  • the communication unit 31 receives an optical signal from the optical fiber 21.
  • the detection unit 32 detects the vibration generated in the utility pole 10 based on the optical signal received by the communication unit 31.
  • the determination unit 41 determines the deterioration of the utility pole 10 based on the vibration frequency of the vibration generated in a specific period among the vibrations detected by the detection unit 32.
  • the notification unit 42 is added to the inside of the deterioration determination device 40 as compared with the configuration of FIG. 1 of the above-described first embodiment. The difference is that they are.
  • 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 possessed by a watchman who monitors the utility pole 10, a terminal installed in the monitoring center, or the like.
  • the notification method may be, for example, a method of displaying a GUI (Graphical User Interface) screen on the display or monitor of the notification destination terminal, or a method of outputting a message by voice from the speaker of the notification destination terminal.
  • the notification unit 42 may notify the deterioration state of the utility pole 10 only when the degree of deterioration of the utility pole 10 is equal to or higher than the threshold value.
  • the notification unit 42 notifies a predetermined notification destination of the deterioration state of the utility pole 10 determined by the discrimination unit 41.
  • the state of deterioration of the utility pole 10 can be notified to the observer or the monitoring center who monitors the utility pole 10.
  • Other effects are the same as those in the first embodiment described above.
  • FIG. 14 shows a configuration example of a deterioration discrimination system in which a communication unit 31 and a detection unit 32 are provided inside the deterioration discrimination device 40.
  • the notification unit 42 may be added inside the deterioration determination device 40 as in the second embodiment described above.
  • one communication unit 31 and one detection unit 32 are provided, but the present invention is not limited to this.
  • 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.
  • a plurality of discrimination units 41 may be provided corresponding to each of the plurality of optical fibers 21.
  • FIG. 15 shows a hardware configuration example of a computer 50 that realizes the deterioration determination device 40 according to the above-described embodiment.
  • the computer 50 includes a processor 501, a memory 502, a storage 503, an input / output interface (input / output I / F) 504, a communication interface (communication I / F) 505, and the like.
  • 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 line for transmitting and receiving data to and from each other.
  • the processor 501 is, for example, an arithmetic processing unit such as a CPU (Central Processing Unit) or a GPU (Graphics Processing Unit).
  • the memory 502 is, for example, a memory such as a RAM (RandomAccessMemory) or a ROM (ReadOnlyMemory).
  • the storage 503 is, for example, a storage device such as an HDD (Hard Disk Drive), an SSD (Solid State Drive), or a memory card. Further, the storage 503 may be a memory such as RAM or ROM.
  • the storage 503 stores a program that realizes the functions of the components included in the deterioration determination device 40. By executing each of these programs, the processor 501 realizes the functions of the components included in the deterioration determination device 40.
  • the processor 501 may read these programs on the memory 502 and then execute the programs, or may execute the programs without reading them on the memory 502. Further, the memory 502 and the storage 503 also play a role of storing information and data held by the components included in the deterioration determination device 40.
  • Non-temporary computer-readable media include various types of tangible storage mediums.
  • Examples of non-temporary computer readable media include magnetic recording media (eg, flexible discs, magnetic tapes, hard disk drives), optomagnetic recording media (eg, optomagnetic discs), CD-ROMs (Compact Disc-ROMs), CDs. -R (CD-Recordable), CD-R / W (CD-ReWritable), semiconductor memory (for example, mask ROM, PROM (Programmable ROM), EPROM (Erasable PROM), flash ROM, RAM.
  • transient computer readable medium May be supplied to the computer by various types of transient computer readable medium.
  • transient computer readable media include electrical signals, optical signals, and electromagnetic waves.
  • the computer-readable medium can supply the program to the computer via a wired communication path such as an electric wire and an optical fiber, or a wireless communication path.
  • 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, and a monitor.
  • the input device 5042 is a device that receives an operator's operation input, and is, for example, a keyboard, a mouse, a touch sensor, and the like.
  • 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 such as a speaker that acoustically outputs sound corresponding to acoustic data processed by the processor 501.
  • the communication interface 505 sends and receives data to and from an external device.
  • the communication interface 505 communicates with an external device via a wired communication path or a wireless communication path.
  • Appendix 1 Optical fiber cables laid on utility poles and A communication unit that receives an optical signal from the optical fiber included in the optical fiber cable, and A detection unit that detects vibration generated on the utility pole based on the optical signal received by the communication unit, and a detection unit.
  • a discrimination unit that determines deterioration of the utility pole based on the vibration frequency of the vibration generated in a specific period, and Deterioration discrimination system.
  • the specific period is a period including when the vibration intensity of the vibration detected by the detection unit becomes a predetermined value or more.
  • the discriminating unit extracts the vibration frequency when the vibration intensity of the vibration becomes the predetermined value or more each time the vibration intensity of the vibration detected by the detection unit becomes the predetermined value or more in the specific period. Then, the deterioration of the utility pole is determined based on the vibration frequency with a large number of extractions.
  • Deterioration determination system according to Appendix 1. (Appendix 3)
  • the discriminating unit is a vibration frequency when the vibration intensity of the vibration becomes the predetermined value or more each time the vibration intensity of the vibration detected by the detecting unit becomes the predetermined value or more in the specific period. Then, the vibration frequency within a predetermined frequency range is extracted, and the deterioration of the electric pole is determined based on the vibration frequency with a large number of extractions.
  • Deterioration determination system according to Appendix 2.
  • the discriminating unit discriminates the deterioration of the utility pole by using a learning model trained by different teacher data according to the model of the utility pole.
  • the deterioration determination system according to any one of Supplementary note 1 to 3.
  • a notification unit for notifying a predetermined notification destination of the deterioration state of the utility pole determined by the discrimination unit is further provided.
  • the deterioration determination system according to any one of Supplementary note 1 to 4.
  • a communication unit that receives optical signals from the optical fiber included in the optical fiber cable laid on the utility pole, and A detection unit that detects vibration generated on the utility pole based on the optical signal received by the communication unit, and a detection unit.
  • a discrimination unit that determines deterioration of the utility pole based on the vibration frequency of the vibration generated in a specific period
  • a deterioration determination device (Appendix 7)
  • the specific period is a period including when the vibration intensity of the vibration detected by the detection unit becomes a predetermined value or more.
  • the discriminating unit extracts the vibration frequency when the vibration intensity of the vibration becomes the predetermined value or more each time the vibration intensity of the vibration detected by the detection unit becomes the predetermined value or more in the specific period. Then, the deterioration of the utility pole is determined based on the vibration frequency with a large number of extractions.
  • the deterioration determination device according to Appendix 6.
  • the discriminating unit is a vibration frequency when the vibration intensity of the vibration becomes the predetermined value or more each time the vibration intensity of the vibration detected by the detecting unit becomes the predetermined value or more in the specific period. Then, the vibration frequency within a predetermined frequency range is extracted, and the deterioration of the electric pole is determined based on the vibration frequency with a large number of extractions.
  • Deterioration determination device according to Appendix 7.
  • the discriminating unit discriminates the deterioration of the utility pole by using a learning model trained by different teacher data according to the model of the utility pole.
  • the deterioration determination device according to any one of Supplementary note 6 to 8.
  • a notification unit for notifying a predetermined notification destination of the deterioration state of the utility pole determined by the discrimination unit is further provided.
  • the deterioration determination device according to any one of Supplementary note 6 to 9. (Appendix 11) It is a deterioration discrimination method using a deterioration discrimination device.
  • a determination step for determining deterioration of the utility pole based on the vibration frequency of the vibration generated in a specific period and a determination step.
  • the specific period is a period including when the vibration intensity of the vibration detected in the detection step becomes a predetermined value or more.
  • the vibration frequency when the vibration intensity of the vibration becomes the predetermined value or more is extracted.
  • the deterioration of the utility pole is determined based on the vibration frequency with a large number of extractions.
  • the deterioration determination method according to Appendix 11. (Appendix 13) In the determination step, each time the vibration intensity of the vibration detected in the detection step becomes the predetermined value or more in the specific period, it is the vibration frequency when the vibration intensity of the vibration becomes the predetermined value or more.
  • the deterioration determination method according to Appendix 12.
  • Appendix 14 In the discrimination step, deterioration of the utility pole is discriminated by using a learning model trained by different teacher data according to the model of the utility pole.
  • the deterioration determination method according to any one of Supplementary note 11 to 13. (Appendix 15) Further including a notification step for notifying a predetermined notification destination of the deterioration state of the utility pole determined in the determination step.

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  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Electromagnetism (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
PCT/JP2020/032866 2020-08-31 2020-08-31 劣化判別システム、劣化判別装置、及び劣化判別方法 Ceased WO2022044319A1 (ja)

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US18/022,955 US12467822B2 (en) 2020-08-31 2020-08-31 Utility pole deterioration discrimination device and method
PCT/JP2020/032866 WO2022044319A1 (ja) 2020-08-31 2020-08-31 劣化判別システム、劣化判別装置、及び劣化判別方法
JP2022545251A JP7613472B2 (ja) 2020-08-31 2020-08-31 劣化判別システム、劣化判別装置、及び劣化判別方法

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Publication number Priority date Publication date Assignee Title
WO2023220448A1 (en) * 2022-05-13 2023-11-16 Nec Laboratories America, Inc. Utility pole integrity assessment by das and machine learning using environmental noise data

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WO2022157877A1 (ja) * 2021-01-21 2022-07-28 日本電信電話株式会社 設備位置特定システム、カバー、及び設備位置特定方法
CN116917703A (zh) * 2021-02-17 2023-10-20 日本电信电话株式会社 电线杆位置确定方法和架空光缆的状态推定方法

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