WO2021157232A1 - 振動処理装置、振動処理方法、及びプログラム - Google Patents

振動処理装置、振動処理方法、及びプログラム Download PDF

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Publication number
WO2021157232A1
WO2021157232A1 PCT/JP2020/048040 JP2020048040W WO2021157232A1 WO 2021157232 A1 WO2021157232 A1 WO 2021157232A1 JP 2020048040 W JP2020048040 W JP 2020048040W WO 2021157232 A1 WO2021157232 A1 WO 2021157232A1
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WIPO (PCT)
Prior art keywords
detection data
timing
point
vibration
belt conveyor
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Ceased
Application number
PCT/JP2020/048040
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English (en)
French (fr)
Japanese (ja)
Inventor
康晴 大西
靖行 福田
佐枝 渡邉
昇 田代
柴田　道男
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NEC Corp
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NEC Corp
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Priority to JP2021575652A priority Critical patent/JP7322979B2/ja
Priority to US17/795,028 priority patent/US11874194B2/en
Priority to CN202080095433.3A priority patent/CN115087853B/zh
Publication of WO2021157232A1 publication Critical patent/WO2021157232A1/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
    • G01M13/00—Testing of machine parts
    • G01M13/02—Gearings; Transmission mechanisms
    • G01M13/023—Power-transmitting endless elements, e.g. belts or chains
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
    • G01H1/00—Measuring characteristics of vibrations in solids by using direct conduction to the detector
    • G01H1/003—Measuring characteristics of vibrations in solids by using direct conduction to the detector of rotating machines
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
    • G01H1/00—Measuring characteristics of vibrations in solids by using direct conduction to the detector
    • G01H1/04—Measuring characteristics of vibrations in solids by using direct conduction to the detector of vibrations which are transverse to direction of propagation
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
    • G01L5/04—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring tension in flexible members, e.g. ropes, cables, wires, threads, belts or bands
    • G01L5/042—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring tension in flexible members, e.g. ropes, cables, wires, threads, belts or bands by measuring vibrational characteristics of the flexible member

Definitions

  • the present invention relates to a vibration processing device, a vibration processing method, and a program.
  • Patent Document 1 discloses a method of attaching a sensor to a device to be monitored and monitoring the facility based on the time series data measured by the sensor.
  • the present inventor has examined a new technique for accurately determining whether or not an abnormality has occurred in the belt conveyor.
  • An example of an object of the present invention is to accurately determine whether or not an abnormality has occurred in a belt conveyor.
  • the first detection data showing the result of detecting the vibration at the first point of the belt conveyor and the result of detecting the vibration at the second point downstream from the first point of the belt conveyor are shown.
  • Acquisition means for acquiring the second detection data A determination means for determining that an abnormality has occurred in the belt conveyor, provided that the result of comparing the first detection data and the second detection data satisfies the first criterion, and
  • a vibration processing device is provided.
  • the computer Acquire the first detection data showing the result of detecting the vibration at the first point of the belt conveyor and the second detection data including the result of detecting the vibration at the second point downstream from the first point of the belt conveyor. death, Provided is a vibration processing method for determining that an abnormality has occurred in the belt conveyor, provided that the result of comparing the first detection data and the second detection data satisfies the first criterion.
  • a computer Acquire the first detection data showing the result of detecting the vibration at the first point of the belt conveyor and the second detection data showing the result of detecting the vibration at the second point downstream from the first point of the belt conveyor. Function to do and A function of determining that an abnormality has occurred in the belt conveyor, provided that the result of comparing the first detection data and the second detection data satisfies the first criterion, and Is provided.
  • FIG. 1 is a diagram for explaining a usage environment of the vibration processing device 10 according to the embodiment.
  • the vibration processing device 10 according to the embodiment detects an abnormality generated in the belt conveyor 20 by processing the vibration generated in the belt conveyor 20.
  • the belt conveyor 20 conveys coal, coke, and the like at, for example, steelworks and power plants. Further, when the belt conveyor 20 is installed in a steel mill, the belt conveyor 20 may convey iron ore.
  • a plurality of vibration sensors 222 are attached to the belt conveyor 20.
  • the belt conveyor 20 has a plurality of rotating shafts 220.
  • the vibration sensor 222 detects the vibration generated in the belt 210 or the rotating shaft of the belt conveyor 20.
  • the vibration sensor 222 is attached to each of the plurality of rotating shafts 220 or in the vicinity thereof.
  • the vibration sensor 222 may be attached to other parts of the belt conveyor 20.
  • Abnormalities that occur in the belt conveyor 20 include partial breakage of the belt 210, dropping of the conveyed object 30, and abnormality of the rotating shaft 220. When these abnormalities occur, the belt 210 or the rotating shaft 220 vibrates differently than usual.
  • the vibration processing device 10 detects this abnormality by processing the vibration detected by the vibration sensor 222.
  • FIG. 2 is a diagram showing an example of the functional configuration of the vibration processing device 10.
  • the vibration processing device 10 includes an acquisition unit 110 and a determination unit 120.
  • the acquisition unit 110 uses data indicating the detection results of each of the plurality of vibration sensors 222 (hereinafter referred to as detection data) as information for identifying the vibration sensor 222 that generated the detection data (hereinafter referred to as sensor identification information). Get linked. Further, the acquisition unit 110 associates the detection data with the sensor identification information and stores it in the vibration information storage unit 112.
  • the acquisition unit 110 may store the detection data acquired from the vibration sensor 222 as it is in the vibration information storage unit 112, or the data after processing the detection data (for example, the data after performing the fast Fourier transform). ) May be stored in the vibration information storage unit 112. In the following description, the latter data will also be referred to as detection data.
  • the acquisition unit 110 reads out the information necessary for detecting the abnormality of the belt conveyor 20 from the vibration information storage unit 112.
  • This information includes, for example, first detection data showing the result of detecting vibration at the first point of the belt conveyor 20, and second detection data showing the result of detecting vibration at the second point downstream from the first point of the belt conveyor 20.
  • Detection data For example, the first detection data is the detection data generated by the vibration sensor 222a of FIG. 1, and the second detection data is the detection data generated by the vibration sensor 222b of FIG.
  • the rotating shaft 220 is installed at both the first point and the second point.
  • the acquisition unit 110 also reads out the third detection data as needed.
  • the third detection data shows the result of detecting the vibration at the third point downstream from the second point of the belt conveyor 20.
  • the third detection data is, for example, the detection data generated by the vibration sensor 222c of FIG. In this case, the rotating shaft 220 is also installed at the third point.
  • the determination unit 120 determines that an abnormality has occurred in the belt conveyor, with the result of comparing the first detection data and the second detection data satisfying the first criterion as a necessary condition or a necessary and sufficient condition. In this determination, the determination unit 120 also uses the third detection data as needed. Details of the processing performed by the determination unit 120 and a specific example of the first criterion will be described later.
  • FIG. 3 is a diagram for explaining the process performed by the determination unit 120 and the first example of the first criterion.
  • This figure shows the first detection data and the second detection data.
  • the detection data shows the time variation of vibration energy or amplitude by wavelength.
  • the characteristic peak does not occur in the first detection data
  • the peak of the vibration amount occurs periodically in the second detection data.
  • the determination unit 120 can detect that an abnormality has occurred in the belt conveyor 20. Then, the determination unit 120 outputs warning information indicating this to, for example, the terminal of the administrator of the belt conveyor 20.
  • the determination unit 120 outputs warning information indicating that the conveyed object may have fallen to, for example, the terminal of the administrator of the belt conveyor 20.
  • 4 and 5 are diagrams for explaining the processing performed by the determination unit 120 and the second example of the first criterion.
  • the determination unit 120 uses the result of comparing the detection result at the first timing of the first detection data with the detection result at the second timing after the first timing of the second detection data as the first reference. It is determined that an abnormality has occurred in the belt conveyor 20 on the condition that the condition is satisfied.
  • the difference between the first timing and the second timing is t 1
  • the speed of the belt conveyor is v
  • the distance between the first point and the second point that is, the distance between the vibration sensor 222a and the vibration sensor 222b.
  • t 1 is, L 1 / V of 0.8 to 1.2 times or less, and preferably not more than 1.05 times 0.95 times.
  • the unit 120 can detect the possibility that the belt 210 is cracked and the possibility that foreign matter is mixed in the conveyed object 30. Then, the determination unit 120 outputs warning information indicating this to, for example, the terminal of the administrator of the belt conveyor 20.
  • the acquisition unit 110 and the determination unit 120 perform the following processing when the result of detecting the vibration of the vibration sensor 222c, that is, the third detection data is used.
  • the acquisition unit 110 reads the third detection data from the vibration information storage unit 112.
  • the third detection data read here is the result of detecting the vibration at the third timing, which is later than the second timing.
  • the determination unit 120 satisfies the first criterion as a result of comparing the detection result at the first timing of the first detection data and the detection result at the second timing after the first timing of the second detection data.
  • the fact that the result of comparing the second detection data and the third detection data satisfies the first criterion is also a necessary condition for determining that an abnormality has occurred in the belt conveyor.
  • t 2 is 0.8 L 2 / V It is a fold or more and 1.2 times or less, preferably 0.95 times or more and 1.05 times or less.
  • the acquisition unit 110 reads the third detection data from the vibration information storage unit 112.
  • the third detection data read here is also the result of detecting the vibration at the third timing, which is later than the second timing.
  • the determination unit 120 satisfies the first criterion as a result of comparing the detection result at the first timing of the first detection data and the detection result at the second timing after the first timing of the second detection data.
  • the fact that the result of comparing the first detection data and the third detection data satisfies the first criterion is also a necessary condition for determining that an abnormality has occurred in the belt conveyor.
  • the difference between the first timing and the third timing t 3 when the first point and the distance between the third point, as shown in FIG. 4 and L 3, t 3 is 0.8 L 3 / V It is fold or more and 1.2 times or less, preferably 0.95 times or more and 1.05 times or less.
  • the necessary conditions for determining an abnormality are increased, so that the erroneous determination by the determination unit 120 is reduced.
  • the process using the third detection data may be performed after, for example, as a result of comparing the first detection data and the second detection data described above, it is determined that there is an abnormality.
  • the determination unit 120 further determines that the abnormality is determined in the first or second example described above as a condition for outputting the warning information to the terminal of the administrator of the belt conveyor 20.
  • the first criterion used by the determination unit 120 can be made different for each of the above types generated on the belt conveyor 20.
  • the determination unit 120 can output information indicating the type of abnormality corresponding to the first criterion to the terminal of the administrator of the belt conveyor 20. In this way, the manager of the belt conveyor 20 can recognize the type of abnormality that has occurred in the belt conveyor 20 by checking the output from the determination unit 120.
  • FIG. 6 is a diagram showing a hardware configuration example of the vibration processing device 10.
  • the vibration processing device 10 includes a bus 1010, a processor 1020, a memory 1030, a storage device 1040, an input / output interface 1050, and a network interface 1060.
  • the bus 1010 is a data transmission path for the processor 1020, the memory 1030, the storage device 1040, the input / output interface 1050, and the network interface 1060 to transmit and receive data to and from each other.
  • the method of connecting the processors 1020 and the like to each other is not limited to the bus connection.
  • the processor 1020 is a processor realized by a CPU (Central Processing Unit), a GPU (Graphics Processing Unit), or the like.
  • the memory 1030 is a main storage device realized by a RAM (Random Access Memory) or the like.
  • the storage device 1040 is an auxiliary storage device realized by an HDD (Hard Disk Drive), an SSD (Solid State Drive), a memory card, a ROM (Read Only Memory), or the like.
  • the storage device 1040 stores a program module that realizes each function of the vibration processing device 10 (for example, the acquisition unit 110 and the determination unit 120).
  • the processor 1020 reads each of these program modules into the memory 1030 and executes them, each function corresponding to the program module is realized.
  • the storage device 1040 also functions as a vibration information storage unit 112.
  • the input / output interface 1050 is an interface for connecting the vibration processing device 10 and various input / output devices.
  • the vibration processing device 10 communicates with the vibration sensor 222 via the input / output interface 1050.
  • the network interface 1060 is an interface for connecting the vibration processing device 10 to the network.
  • This network is, for example, LAN (Local Area Network) or WAN (Wide Area Network).
  • the method of connecting the network interface 1060 to the network may be a wireless connection or a wired connection.
  • the vibration processing device 10 may communicate with the vibration sensor 222 via the network interface 1060.
  • FIG. 7 is a flowchart showing an example of the operation of the vibration processing device 10.
  • the vibration processing device 10 periodically performs the processing shown in this figure.
  • the acquisition unit 110 repeatedly acquires the detection results of the plurality of vibration sensors 222 and updates the vibration information storage unit 112.
  • the acquisition unit 110 reads out the detection data necessary for the abnormality determination from the vibration information storage unit 112. Specific examples of the detection data are as described with reference to FIGS. 3 to 5 (step S10).
  • the determination unit 120 determines whether or not an abnormality has occurred in the belt conveyor 20 by comparing the detection data read by the acquisition unit 110 with each other. Specific examples of the determination performed here are also as described with reference to FIGS. 3 to 5 (step S20).
  • the comparison result satisfies the criteria (step S20: Yes)
  • the determination unit 120 provides information (warning information) indicating that fact to the belt conveyor 20.
  • Output to the administrator's terminal step S30.
  • the determination unit 120 may display warning information on the display.
  • the determination unit 120 compares the vibration detection result (first detection data) at the first point of the belt conveyor 20 with the vibration detection result (second detection data) at the first point, and the result thereof.
  • the abnormality of the belt conveyor 20 is determined by determining whether or not the comparison result satisfies the first criterion. Therefore, the erroneous detection of the abnormality can be reduced as compared with the case where the abnormality is determined only by the first detection data. Therefore, by using the vibration processing device 10, it is possible to accurately determine whether or not an abnormality has occurred in the belt conveyor 20.
  • the determination unit 120 can also estimate the type of abnormality that has occurred.
  • the determination means is the result of comparing the detection result at the first timing of the first detection data with the detection result at the second timing of the second detection data after the first timing. It is determined that an abnormality has occurred in the belt conveyor on the condition that one of the criteria is satisfied, and it is determined that an abnormality has occurred.
  • the difference between the first timing and the second timing is t 1
  • the speed of the belt conveyor is v
  • the distance between the first point and the second point is L 1
  • the t 1 is L 1 / V.
  • Vibration processing device that is 0.8 times or more and 1.2 times or less of. 4.
  • the acquisition means acquires the third detection data including the result of detecting the vibration at the third timing after the second timing at the third point downstream from the second point of the belt conveyor.
  • the determination means further determines that an abnormality has occurred in the belt conveyor, provided that the result of comparing the second detection data and the third detection data satisfies the first criterion.
  • the difference between the second timing and the third timing is t 2 and the distance between the second point and the third point is L 2
  • the t 2 is 0.8 times or more of L 2 / V.
  • a vibration processing device that is less than twice as large. 5.
  • the acquisition means acquires the third detection data showing the result of detecting the vibration at the third timing, which is later than the second timing, at the third point downstream of the second point of the belt conveyor.
  • the determination means further determines that an abnormality has occurred in the belt conveyor, provided that the result of comparing the first detection data and the third detection data satisfies the first criterion.
  • the difference between the first timing and the third timing is t 3 and the distance between the first point and the third point is L 3
  • the t 3 is 0.8 times or more of L 3 / V.
  • a vibration processing device that is less than twice as large. 6.
  • the vibration processing apparatus according to any one of 3 to 5 above.
  • the first reference is a vibration processing apparatus in which a change in the first detection data at the first timing and a change in the second detection data at the second timing show the same tendency. 7.
  • the first criterion is set for each type of abnormality.
  • the determination means is a vibration processing device that outputs information indicating the type of abnormality corresponding to the first criterion when any one of the first criteria is satisfied.
  • the computer Acquire the first detection data showing the result of detecting the vibration at the first point of the belt conveyor and the second detection data including the result of detecting the vibration at the second point downstream from the first point of the belt conveyor.
  • a vibration processing method for determining that an abnormality has occurred in the belt conveyor provided that the result of comparing the first detection data and the second detection data satisfies the first criterion. 9.
  • the computer compares the detection result of the first detection data at the first timing with the detection result of the second detection data at the second timing after the first timing. On the condition that the criteria are met, it is determined that an abnormality has occurred in the belt conveyor, and it is determined that an abnormality has occurred.
  • the t 1 is L 1 / V.
  • Vibration processing method that is 0.8 times or more and 1.2 times or less of. 11.
  • the computer The third detection data including the result of detecting the vibration at the third timing after the second timing at the third point downstream from the second point of the belt conveyor was acquired. Further, it is determined that an abnormality has occurred in the belt conveyor, provided that the result of comparing the second detection data and the third detection data satisfies the first criterion.
  • the t 2 is 0.8 times or more of L 2 / V. Vibration processing method that is less than twice. 12.
  • the computer The third detection data showing the result of detecting the vibration at the third timing after the second timing at the third point downstream from the second point of the belt conveyor was acquired. Further, it is determined that an abnormality has occurred in the belt conveyor, provided that the result of comparing the first detection data and the third detection data satisfies the first criterion.
  • the first reference is a vibration processing method in which a change in the first detection data at the first timing and a change in the second detection data at the second timing show the same tendency.
  • the first criterion is set for each type of abnormality. A vibration processing method in which the computer outputs information indicating the type of abnormality corresponding to the first criterion when any of the first criteria is satisfied. 15.
  • the first detection data showing the result of detecting the vibration at the first point of the belt conveyor and the second detection data showing the result of detecting the vibration at the second point downstream from the first point of the belt conveyor.
  • the first is the result of comparing the detection result of the first detection data at the first timing with the detection result of the second detection data at the second timing after the first timing.
  • the t 2 is 0.8 times or more of L 2 / V. Programs that are less than double. 19.
  • the third detection data showing the result of detecting the vibration at the third timing after the second timing at the third point downstream from the second point of the belt conveyor is acquired.
  • the t 3 is 0.8 times or more of L 3 / V.
  • the first criterion is that the change of the first detection data at the first timing and the change of the second detection data at the second timing show the same tendency. 21.
  • the first criterion is set for each type of abnormality. A program that causes the computer to output information indicating the type of abnormality corresponding to the first criterion when any of the first criteria is satisfied.
  • Vibration processing device 20 Belt conveyor 30 Conveyed object 110 Acquisition unit 112 Vibration information storage unit 120 Judgment unit 210 Belt 220 Rotating shaft 222 Vibration sensor

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Control Of Conveyors (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
  • Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
PCT/JP2020/048040 2020-02-03 2020-12-22 振動処理装置、振動処理方法、及びプログラム Ceased WO2021157232A1 (ja)

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JP2021575652A JP7322979B2 (ja) 2020-02-03 2020-12-22 振動処理装置、振動処理方法、及びプログラム
US17/795,028 US11874194B2 (en) 2020-02-03 2020-12-22 Vibration processing apparatus, vibration processing method, and non-transitory computer-readable storage medium
CN202080095433.3A CN115087853B (zh) 2020-02-03 2020-12-22 振动处理装置、振动处理方法和计算机可读存储介质

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JP2020016593 2020-02-03
JP2020-016593 2020-02-03

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