WO2021140911A1 - 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
WO2021140911A1
WO2021140911A1 PCT/JP2020/048039 JP2020048039W WO2021140911A1 WO 2021140911 A1 WO2021140911 A1 WO 2021140911A1 JP 2020048039 W JP2020048039 W JP 2020048039W WO 2021140911 A1 WO2021140911 A1 WO 2021140911A1
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WIPO (PCT)
Prior art keywords
vibration
belt conveyor
frequency
reference region
vibration processing
Prior art date
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/JP2020/048039
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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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Filing date
Publication date
Application filed by NEC Corp filed Critical NEC Corp
Priority to JP2021569823A priority Critical patent/JPWO2021140911A1/ja
Priority to US17/790,554 priority patent/US20230030522A1/en
Publication of WO2021140911A1 publication Critical patent/WO2021140911A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G43/00—Control devices, e.g. for safety, warning or fault-correcting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G27/00—Jigging conveyors
    • B65G27/04—Load carriers other than helical or spiral channels or conduits
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G27/00—Jigging conveyors
    • B65G27/10—Applications of devices for generating or transmitting jigging movements
    • B65G27/16—Applications of devices for generating or transmitting jigging movements of vibrators, i.e. devices for producing movements of high frequency and small amplitude
    • B65G27/18—Mechanical devices
    • B65G27/20—Mechanical devices rotating unbalanced masses
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G27/00—Jigging conveyors
    • B65G27/10—Applications of devices for generating or transmitting jigging movements
    • B65G27/32—Applications of devices for generating or transmitting jigging movements with means for controlling direction, frequency or amplitude of vibration or shaking movement
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
    • G01H17/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves, not provided for in the other groups of this subclass
    • 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
    • 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
    • G01M13/028—Acoustic or vibration analysis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G2203/00—Indexing code relating to control or detection of the articles or the load carriers during conveying
    • B65G2203/04—Detection means
    • B65G2203/042—Sensors

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 monitored object.
  • An example of an object of the present invention is to accurately determine whether or not an abnormality has occurred in a monitored object.
  • a vibration information acquisition means for acquiring vibration information indicating the magnitude of amplitude for each frequency, which is the result of detecting vibration generated in a monitored object.
  • Amplitude reference for processing a plurality of the vibration information generated at different timings in a state where no abnormality has occurred in the monitored object and using the result of the processing to determine that the monitored object is normal.
  • Reference area setting means for setting the area for each frequency, In the vibration information generated at the first timing, when the amplitude deviates from the reference region at any frequency, a determination means for determining that an abnormality has occurred in the monitoring target at the first timing, and A vibration processing device is provided.
  • the computer This is the result of detecting the vibration generated in the monitored object, and the vibration information indicating the magnitude of the amplitude for each frequency is acquired.
  • Amplitude reference for processing a plurality of the vibration information generated at different timings in a state where no abnormality has occurred in the monitored object and using the result of the processing to determine that the monitored object is normal.
  • a computer It is the result of detecting the vibration generated in the monitored object, and has a function to acquire vibration information indicating the magnitude of the amplitude for each frequency, and Amplitude reference for processing a plurality of the vibration information generated at different timings in a state where no abnormality has occurred in the monitored object and using the result of the processing to determine that the monitored object is normal.
  • 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 detects and / or predicts an abnormality of the monitored target by processing the vibration generated in the monitored target.
  • the monitoring target is equipment installed in factories and the like.
  • the monitoring target is 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.
  • At least one vibration sensor 222 is 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 or are about to occur, the belt 210 or the rotating shaft 220 vibrates differently than usual.
  • the vibration processing device 10 detects this abnormality or predicts the occurrence of the abnormality by processing the vibration detected by the vibration sensor 222.
  • the belt conveyor 20 is controlled by the control device 22.
  • the vibration processing device 10 acquires control information of the belt conveyor 20 from the control device 22, and uses this control information to detect and / or predict an abnormality.
  • FIG. 2 is a diagram showing an example of the functional configuration of the vibration processing device 10.
  • the vibration processing device 10 includes a vibration information acquisition unit 110, a reference area setting unit 120, and a determination unit 130.
  • the vibration information acquisition unit 110 acquires detection data indicating the detection result of the vibration sensor 222 in association with the detection timing (for example, information indicating the detection date and time). Then, the vibration information acquisition unit 110 generates vibration information by processing the detection data.
  • the vibration information shows the magnitude of the amplitude for each frequency.
  • the reference area setting unit 120 generates data indicating a reference area set in the vibration information.
  • the reference region indicates the range of amplitude at which the belt conveyor 20 is judged to be normal for each frequency.
  • the reference area setting unit 120 processes a plurality of vibration information generated at different timings in a state where no abnormality has occurred in the belt conveyor 20, and sets a reference area using the result of the processing.
  • the processing performed here is, for example, statistical processing. A detailed example of the method of setting the reference region will be described later with reference to other figures.
  • the reference area setting unit 120 stores the set reference area in the reference area storage unit 122.
  • the reference area storage unit 122 may be a part of the vibration processing device 10 or may be located outside the vibration processing device 10.
  • the determination unit 130 determines that an abnormality has occurred in the monitoring target at that timing when the amplitude deviates from the reference region at any frequency.
  • the determination unit 130 repeats this process.
  • the interval at which the determination unit 130 makes a determination is, for example, 1 minute or more and 24 hours or less, but is not limited to this range.
  • the vibration information acquisition unit 110 stores the detection data acquired from the vibration sensor 222 and the vibration information generated by the vibration sensor 222 in the vibration information storage unit 112 in association with the detection timing of the detection data.
  • the vibration information storage unit 112 may be a part of the vibration processing device 10 or may be located outside the vibration processing device 10.
  • the vibration information acquisition unit 110 may acquire the detection data in real time, or may acquire the detection data in a batch system.
  • the vibration information acquisition unit 110 generates the above-mentioned vibration information when the detection data is acquired, and the generation timing may be immediately after the acquisition of the detection data or may be a batch type. In the latter case, the vibration information acquisition unit 110 associates the acquired detection data with the detection timing of the detection casting data and stores it in the vibration information storage unit 112, and stores the detection data in the vibration information storage unit when generating the vibration information. Read from 112.
  • the reference area setting unit 120 may set the reference area (including updating; the same applies hereinafter) at regular time intervals, or set the reference area using the control information of the belt conveyor 20 acquired from the control device 22. The timing may be determined. As an example, the reference area setting unit 120 sets the reference area when the control information satisfies the setting condition. For example, the reference area setting unit 120 may set the reference area by using the vibration information after the operation when the stopped belt conveyor 20 operates. Further, the reference area setting unit 120 may set the reference area by using the vibration information before the belt conveyor 20 is stopped while the belt conveyor 20 is stopped. Further, when the operating conditions of the belt conveyor change, the reference area setting unit 120 may set the reference area by using the vibration information after the change.
  • the operating conditions here are, for example, at least one of the speed of the belt 210 and the climate of the place where the belt conveyor 20 is installed (for example, the presence or absence of rainfall or snowfall), but are not limited thereto.
  • the climate of the place where the belt conveyor 20 is installed may be acquired from the control device 22, or may be acquired from a device different from the control device 22 (for example, a server that provides weather information on the Internet). You may.
  • FIG. 3 is a diagram for explaining an example of the reference region.
  • the reference region setting unit 120 calculates the statistical value of the amplitude for each frequency. This statistical value is an average value, but may be the result of other statistical processing (for example, the median value). Then, the reference area setting unit 120 sets the reference area so as to include this statistical value. For example, the reference area setting unit 120 sets the value obtained by adding the first reference value t 1 to the statistical value as the upper limit value of the reference area. Further, the reference area setting unit 120 sets a value obtained by subtracting the second reference value t 2 from the statistical value as the lower limit value of the reference area.
  • the first reference value t 1 and the second reference value t 2 may be the same value or different values. Further, the first reference value t 1 and the second reference value t 2 may be the same value at any frequency, or may be a value different from other frequencies at least at some frequencies. Good.
  • FIG. 4 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, a vibration information acquisition unit 110, a reference area setting unit 120, and a determination unit 130).
  • a vibration information acquisition unit 110 for example, a vibration information acquisition unit 110, a reference area setting unit 120, and a determination unit 130.
  • the storage device 1040 also functions as a vibration information storage unit 112 and a reference area storage unit 122.
  • 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 control device 22 and 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 control device 22 and the vibration sensor 222 via the network interface 1060.
  • FIG. 5 is a flowchart showing an example of processing performed by the reference area setting unit 120 of the vibration processing device 10.
  • the reference area setting unit 120 determines whether or not the setting condition of the reference area is satisfied (step S10). Specific examples of the setting conditions are as described with reference to FIG.
  • the reference area setting unit 120 reads out a plurality of vibration information satisfying the condition from the vibration information storage unit 112, and processes, for example, statistically processes the plurality of vibration conditions.
  • Step S20 sets the reference area using the processing result (step S30), and stores the information indicating the set reference area in the reference area storage unit 122 (step S40).
  • FIG. 6 is a flowchart showing an example of processing performed by the determination unit 130 of the vibration processing device 10.
  • the determination unit 130 reads information indicating the reference area from the reference area storage unit 122 (step S110). Then, each time the determination unit 130 acquires the vibration information to be processed (step S120), the determination unit 130 determines whether or not there is a frequency whose amplitude is outside the reference region in the vibration region (step S130). When a frequency outside the reference region exists (step S130: Yes), the determination unit 130 determines that an abnormality has occurred or is likely to occur, and generates and outputs abnormality information.
  • the determination unit 130 may output the detection timing associated with the vibration information to be processed together with the abnormality information.
  • the abnormality information is output to, for example, the terminal of the administrator of the belt conveyor 20. This terminal may be a fixed terminal or a mobile terminal (step S140).
  • the frequency outside the reference region may differ depending on the type of abnormality that has occurred on the belt conveyor 20. Therefore, the determination unit 130 may select information to be output using a frequency whose amplitude deviates from the reference region.
  • the reference area storage unit 122 stores each of the plurality of frequencies or frequency bands in association with the type of abnormality corresponding to the frequency or frequency band. Then, the determination unit 130 identifies a frequency whose amplitude deviates from the reference region, and identifies the type of abnormality corresponding to the specified frequency by using the reference region storage unit 122. Then, the determination unit 130 includes information indicating the type of the identified abnormality in the abnormality information.
  • the determination unit 130 may include information indicating a method of dealing with the identified abnormality in the abnormality information.
  • the reference area setting unit 120 of the vibration processing device 10 processes a plurality of vibration information generated at different timings in a state where no abnormality has occurred in the belt conveyor 20, and the processing is performed. Using the result, a reference region of amplitude for determining that the belt conveyor 20 is normal is set for each frequency. Then, the determination unit 130 determines that the belt conveyor 20 has an abnormality at that timing when the amplitude deviates from the reference region at any frequency in the vibration information generated at any timing. Therefore, it is possible to accurately determine whether or not an abnormality has occurred in the belt conveyor 20.
  • Vibration information acquisition means for acquiring vibration information indicating the magnitude of amplitude for each frequency, which is the result of detecting vibration generated in the monitored object, Amplitude reference for processing a plurality of the vibration information generated at different timings in a state where no abnormality has occurred in the monitored object and using the result of the processing to determine that the monitored object is normal.
  • Reference area setting means for setting the area for each frequency, In the vibration information generated at the first timing, when the amplitude deviates from the reference region at any frequency, a determination means for determining that an abnormality has occurred in the monitoring target at the first timing, and Vibration processing device.
  • the process is a process of calculating the average value of the amplitude for each frequency.
  • the reference region setting means is a vibration processing device that sets the reference region so as to include the average value. 3.
  • the monitoring target is a vibration processing device that is a belt conveyor. 4.
  • the reference area setting means is a vibration processing device that sets the reference area by using the vibration information after the operation when the stopped belt conveyor operates. 5.
  • the reference area setting means is a vibration processing device that sets the reference area while the belt conveyor is stopped, using the vibration information before the belt conveyor is stopped. 6.
  • the reference region setting means is a vibration processing device that sets the reference region by using the vibration information after the change when the operating conditions of the belt conveyor change.
  • the operating conditions are a vibration processing device that is at least one of the speed of the belt conveyor and the climate of the place where the belt conveyor is installed.
  • the determination means is a vibration processing device that selects information to be output using a frequency whose amplitude deviates from the reference region and outputs the selected information.
  • the computer This is the result of detecting the vibration generated in the monitored object, and the vibration information indicating the magnitude of the amplitude for each frequency is acquired.
  • Amplitude reference for processing a plurality of the vibration information generated at different timings in a state where no abnormality has occurred in the monitored object and using the result of the processing to determine that the monitored object is normal.
  • the process is a process of calculating the average value of the amplitude for each frequency.
  • the monitoring target is a vibration processing method of a belt conveyor. 12.
  • the process is a process of calculating the average value of the amplitude for each frequency.
  • the monitoring target is a program that is a belt conveyor.
  • Vibration processing device 20 Belt conveyor 22 Control device 30 Conveyed object 110 Vibration information acquisition unit 112 Vibration information storage unit 120 Reference area setting unit 122 Reference area storage unit 130 Judgment unit 210 Belt 220 Rotating shaft 222 Vibration sensor

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Acoustics & Sound (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
  • Control Of Conveyors (AREA)
PCT/JP2020/048039 2020-01-08 2020-12-22 振動処理装置、振動処理方法、及びプログラム Ceased WO2021140911A1 (ja)

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US17/790,554 US20230030522A1 (en) 2020-01-08 2020-12-22 Vibration processing apparatus, vibration processing method, and non-transitory storage medium

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JP2020-001362 2020-01-08
JP2020001362 2020-01-08

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WO2025248608A1 (ja) * 2024-05-28 2025-12-04 株式会社協和製作所 モータ内蔵ローラ及びそれの異常検知方法

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JP7322979B2 (ja) * 2020-02-03 2023-08-08 日本電気株式会社 振動処理装置、振動処理方法、及びプログラム
CN119620608B (zh) * 2024-11-29 2025-06-17 衡阳运输机械有限公司 多模式带式输送机自动控制方法及系统

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JP2019203788A (ja) * 2018-05-23 2019-11-28 日立造船株式会社 回転機器診断装置
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US20230030522A1 (en) 2023-02-02
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