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WO2025038008A1 - Procédé et système de détermination automatisée de dommages de bande de transporteur - Google Patents

Procédé et système de détermination automatisée de dommages de bande de transporteur Download PDF

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Publication number
WO2025038008A1
WO2025038008A1 PCT/RU2024/050159 RU2024050159W WO2025038008A1 WO 2025038008 A1 WO2025038008 A1 WO 2025038008A1 RU 2024050159 W RU2024050159 W RU 2024050159W WO 2025038008 A1 WO2025038008 A1 WO 2025038008A1
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WO
WIPO (PCT)
Prior art keywords
vibration
conveyor
belt
damage
conveyor belt
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.)
Pending
Application number
PCT/RU2024/050159
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English (en)
Russian (ru)
Inventor
Алексей Геннадьевич ПРИДОРОЖНЫЙ
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Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from RU2023121465A external-priority patent/RU2816813C1/ru
Application filed by Individual filed Critical Individual
Publication of WO2025038008A1 publication Critical patent/WO2025038008A1/fr
Priority to ZA2025/02227A priority Critical patent/ZA202502227B/en
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • B65G43/02—Control devices, e.g. for safety, warning or fault-correcting detecting dangerous physical condition of load carriers, e.g. for interrupting the drive in the event of overheating
    • 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 preceding groups

Definitions

  • the present technical solution relates to the field of computer technologies, in particular, to a method and system for automated detection of conveyor belt damage by analyzing vibration data from vibration sensors placed on conveyor elements.
  • conveyor transport is used to transport bulk cargo.
  • Bulk cargo whether waste rock, ore, coal, coke, charge, concentrate, agglomerate, pellet, chemical substances or other is transported directly on a conveyor (conveyor) belt from the loading point, usually in the area of the tail drum, to the unloading point, usually in the area of the head/drive drum.
  • a conveyor belt usually in the area of the tail drum, to the unloading point, usually in the area of the head/drive drum.
  • emergency situations may arise associated with damage to the conveyor belt, including the most severe damage - a longitudinal tear (cut) of the belt, which leads to a partial or complete loss of the belt and unplanned downtime of the conveyor transport due to repair or replacement of the conveyor belt.
  • Inductive loops are vulcanized into the belt with a certain step at the customer's discretion (usually 50-150 running meters), so that if any of the inductive loops is damaged due to a belt break, the conveyor stops, in this case the amount of damaged belt is limited by the step of installing inductive loops in the conveyor belt.
  • Laser systems are known, for example CONTI SurfaceProtect services/belt-monitoring/pro ucts/conti-protect/conti-surfaceprotect), which use laser scanning of the belt surface for damage, including longitudinal ruptures of the belt.
  • the operating principle of systems based on belt width control is that as a result of a longitudinal cut, the belt may diverge or, on the contrary, narrow due to the overlap of cut parts, which changes its width.
  • Ultrasonic or radar sensors for monitoring the location of the belt edges are installed to determine the belt width.
  • the operating principle of systems based on vibration transmission across the belt is that when the belt is longitudinally cut, its integrity is violated and vibration is not transmitted across the belt.
  • the main disadvantages of belt width control systems are that if the belt does not diverge or narrow in the event of a cut, the cut is not detected because the belt width does not change.
  • vibration readings of the conveyor taken with the help of a vibration measuring device (vibration sensor), placed on the metal conveyor frame itself or on elements connected (adjacent) to the conveyor frame, the readings from which are subsequently processed by a computing device to identify abnormal values indicating damage to the belt.
  • a vibration measuring device vibration sensor
  • the claimed solution is aimed at overcoming the technical problem of obtaining operational monitoring of conveyor belt damage by analyzing conveyor vibration readings.
  • the technical result is to increase the accuracy of detecting damage to a conveyor belt by analyzing conveyor vibration data.
  • a method for the automated detection of conveyor belt damage performed using a computing device connected to at least one vibration measuring device, and comprising the steps of: a) obtaining vibration measurement data from at least one vibration measuring device located on structural elements of the belt conveyor or on elements connected to the belt conveyor; b) processing the measurements obtained in step a) using the computing device, during which they are compared with at least one reference value of the vibration parameter and/or with at least one reference vibration pattern indicating the presence of conveyor belt damage; c) determining the presence of conveyor belt damage if, in step b), the vibration measurements differ from the at least one reference value vibration parameters and/or correspond to at least one reference vibration pattern indicating the presence of damage to the conveyor belt; d) recording data on the detected damage in the memory of the computing device and/or transmitting it to an external device.
  • the vibration measuring device is a contact or non-contact vibrometer.
  • the vibration measuring device is an accelerometer.
  • the element connected to the belt conveyor is at least one of: a transfer unit, a loading station, a chute at the conveyor loading location, a loading device, an unloading device, a loading hopper, an unloading hopper, a loading cart, an unloading cart, a transfer box, support metal structures, a shock-absorbing table, a transfer-damping station at the loading or transfer location, a loading chute, a receiving chute, scrapers, throwers, belt cleaning devices, conveyor covers, a conveyor service platform, passages, stairs (ladders) next to the belt conveyor.
  • step a) the measurement of vibration parameters occurs along at least one of the selected vibration directions.
  • step b) the processing of measurement data from the vibration measuring device occurs in a time or frequency representation.
  • step b) a Fourier transform or a Fourier series expansion is used to obtain a frequency representation of vibration.
  • a measured vibration parameter value is analyzed for the time representation of vibration in terms of its deviation from a given reference value, and in order to obtain a frequency representation of vibration an amplitude spectrum of the vibration signal is analyzed in terms of identifying harmonics and/or spectrum sections corresponding to a reference pattern indicating the presence of damage to the conveyor belt and/or harmonics exceeding a given reference value of the vibration parameter in amplitude.
  • the reference value for the vibration parameter in the time representation is set based on the average or peak values of the given vibration parameter obtained in the time range of trouble-free operation of the belt conveyor.
  • the reference value for the amplitude of the vibration parameter in the frequency representation is set based on the peak or average values of the amplitude in the amplitude spectrum of the vibration signal obtained in the time range of trouble-free operation of the belt conveyor.
  • step c) the presence of damage is determined if the deviation from the reference value of the vibration parameter occurs a specified number or more times during a specified period of time or occurs a specified number or more times in a row.
  • step c) determines the presence of damage if, in step b), the vibration measurements differ from one or more reference values for one or more vibration parameters simultaneously and/or correspond to one or more reference vibration patterns simultaneously, indicating the presence of damage to the conveyor belt.
  • an aggregate value is determined for analyzing the presence of damage to a conveyor belt based on vibration measurements and/or vibration patterns, wherein each reference vibration parameter value and reference vibration pattern corresponds to a weighting factor.
  • step b) the aggregated reference value is set based on vibration parameters obtained in the time range of trouble-free operation of the belt conveyor.
  • the computing device is configured to recognize characteristic patterns of damage to the conveyor belt when analyzing the time and/or frequency representation of the vibration signal and/or the characteristic function (CF) of the vibration signal using analytical methods or an artificial neural network.
  • the external device is connected to the computing device via a wired or wireless data transmission channel.
  • the external device is at least one of: a monitor, an interactive screen, a computer, a laptop, a tablet, smartphone, smart wearable device, removable storage device, belt conveyor control controller, or belt conveyor remote control system.
  • the computing device is connected to the belt conveyor control system in one of the following ways: via relay outputs, via the Modbus protocol, or via Profibus or Profinet networks.
  • the computing device generates a signal for stopping the belt conveyor, transmitted to the belt conveyor control system, upon determining the presence of damage to the conveyor belt.
  • GUI is implemented on an external device and/or on a computing device.
  • the computing device is further configured to configure it and/or track the result of the analysis of the state of the conveyor belt using an external device.
  • a video stream is additionally generated with an image of the conveyor belt surface, received from a video camera.
  • the computing device additionally generates an alarm signal for notifying the conveyor belt operator of the presence of damage to the conveyor belt, transmitted to an external device and/or an audio and/or light notification device.
  • the vibration measuring device is located at a distance of no more than 5000 meters from the suspected location of the conveyor belt damage.
  • step b) when processing the signal in the time representation, the characteristic function (CF) of the vibration signal is calculated.
  • the reference HF is calculated based on vibration parameters corresponding to the trouble-free operation mode of the conveyor.
  • the reference values are selected to be values obtained on the basis of the parameter values of the reference HF.
  • a system for automated detection of conveyor belt damage comprising a computing device connected to at least one vibration measuring device, in which receiving vibration measurement data from at least one vibration measurement device located on the structural elements of the belt conveyor or on elements connected to the belt conveyor; processing the obtained measurements using a computing device, during which they are compared with at least one reference value of the vibration parameter and/or with at least one reference vibration pattern indicating the presence of damage to the conveyor belt; determining the presence of damage to the conveyor belt if the vibration measurements differ from at least one reference value of the vibration parameter and/or correspond to at least one reference vibration pattern indicating the presence of damage to the conveyor belt; recording data on the detected damage in the memory of the computing device and/or transmitting them to an external device.
  • Fig. 1 illustrates a general diagram of the implementation of the claimed solution.
  • Fig. 2 illustrates a block diagram of the implementation of the claimed method for monitoring the state of a conveyor belt.
  • Fig. 3A - 3B illustrate examples of signals in the time and frequency ranges.
  • Fig. 4 illustrates a general view of the computing device.
  • the solution consists in creating an automated method for monitoring the condition of a conveyor belt (101) during transportation of material (105), in particular, ore, rocks and other types of material fed to the belt (101) through a loading hopper (104).
  • the movement of the conveyor belt (101) is carried out by rotating the head (drive) (102) and tail (103) drums, there may be several drive drums, they are driven by electric motors, which in turn are started using a control controller (not shown).
  • the main indicators of the condition of the conveyor belt are vibration parameters, which are read using one or more vibration measuring devices (106), which are placed on the elements of the belt conveyor, for example, its stav (110).
  • vibration measuring devices 106
  • a contact or non-contact vibrometer can be used as a vibration measuring device (106)
  • an accelerometer can also be used.
  • the vibration measuring device (106) is placed on the metal elements of the conveyor, in particular, its frame (F), allowing to identify the vibration oscillations occurring during the conveyor operation.
  • this placement option is not the only possible one for the purposes of implementing the claimed solution.
  • vibration measuring device (106) on the elements connected to the frame (110) of the conveyor, for example, a transfer unit, a loading station, a chute at the conveyor loading point, a loading device, an unloading device, a loading hopper, an unloading hopper, a loading cart, an unloading cart, a transfer box, support metal structures, a shock-absorbing table, a transfer and damping station at the loading or reloading point, a loading chute, a receiving chute, scrapers, throwers, belt cleaning devices, conveyor covers, a conveyor service platform, passages, ladders (ladders) next to the belt conveyor, etc.
  • These elements also sense the vibration that occurs, which can be detected by a vibration measuring device (106), which is preferably located at a distance of no more than 5000 meters from the expected location of the damage to the conveyor belt (101).
  • the data of the vibrations occurring, recorded by the vibration measuring device (106), are transmitted via a data transmission channel to the computing device (107) for their subsequent processing.
  • a computer, a computing unit, a single-board computer, a system on a chip (SoC), etc. can be used as the computing device (107).
  • Wired and/or wireless communication can be used as the data transmission channel, for example, a connection using a physical connection (USB, Lan, RS-232, etc.), or using a wireless type of communication (Bluetooth, BLE, WLAN, etc.).
  • the computing device (107) can be implemented in a single housing with the vibration measuring device (106), both for the case of placing one device (106), and for several devices (106) fixed at a given step on the elements of the conveyor (110) and/or on the elements connected to it.
  • the computing device (107) is connected to an external device (108), which is typically a computer, server or control panel, providing storage of data on the state of the conveyor belt and subsequent transmission of information on the state of the belt to end users (109), such as a conveyor operator or maintenance personnel.
  • an external device (108) may be a belt conveyor control controller or a remote belt conveyor control system,
  • the external device (108) is connected to the computing device (107) via a wired or wireless data transmission channel similar to those indicated above.
  • the external device (108) can be, for example, a monitor, an interactive screen, a computer, a laptop, a tablet, a smartphone, a smart wearable device, a removable data carrier, a belt conveyor control controller, or a remote belt conveyor control system.
  • the external device (108) and the computing device (107) may comprise a graphical user interface (GUI) for displaying the results of detecting damage to the conveyor belt (101) or displaying various types of information.
  • GUI graphical user interface
  • the computing device (107) is further configured with the possibility of configuring it and/or tracking the result of the analysis of the state of the conveyor belt (101), using an external device (108).
  • one or more cameras may be installed on the conveyor, forming a video stream with an image of the surface of the conveyor belt (101), received from the video camera.
  • Fig. 2 shows a description of the implementation of the method of the claimed solution.
  • the computing device (107) receives vibration measurement data from at least one vibration measurement device (106), which measures one or more vibration parameters, in particular, vibration acceleration, vibration velocity or vibration displacement. In this case, these measurements can be made along at least one of the selected vibration directions (for example, the longitudinal direction).
  • the obtained data are processed using the software logic of the computing device (107), during which the obtained values of the vibration parameters are compared with one or more reference vibration parameter values that are used to detect anomalies indicating damage to the conveyor belt (101).
  • the data received from the vibration measuring device (106) is also analyzed by the computing device (107) in terms of their comparison with at least one reference vibration pattern indicating the presence of damage to the conveyor belt (101).
  • a conveyor belt failure may be characterized by a transient vibration signal caused by the impact of a stuck piece of ore against a structural element of the belt conveyor and/or against an element connected to the belt conveyor during a belt break, the amplitude spectrum of which is continuous over a wide frequency range and has characteristic amplitude peaks at the natural frequencies of the conveyor structure, which is one example of a reference vibration pattern corresponding to belt failure.
  • the computing device (107) makes a decision on the presence or absence of damage to the conveyor belt (101). If damage to the belt (101) is detected, then at step (204) the damage is recorded and at step (205) this information is transmitted to the external device (108) for storage and/or subsequent use.
  • the presence of damage at step (203) may also be established if the deviation from the reference value of the vibration parameter occurs a specified number or more times during a specified period of time or occurs a specified number or more times in a row.
  • the presence of damage can be determined if, in step (202), the vibration measurements differ from one or more reference values for one or more vibration parameters simultaneously and/or correspond to one or more reference vibration patterns simultaneously, indicating the presence of damage to the conveyor belt.
  • a formula with weighting factors can be used to take into account the difference from each reference value of the vibration parameter and/or to take into account the correspondence to each reference vibration pattern, indicating the presence of damage to the conveyor belt, the calculation result of which is compared with an aggregated reference value, the difference from which is confirmation of damage to the belt.
  • Said aggregated reference value can be set based on vibration parameters obtained in the time range of trouble-free operation of the belt conveyor.
  • the processing of measurement data from the vibration measuring device (106) occurs in a time or frequency representation, examples of which are shown in Figs. 3A - 3B.
  • reference values of the vibration parameter are indicated in the form of thresholds (301, 302), with which the comparison is carried out.
  • the processing of the received data from the device (106) is used, including a Fourier transform or expansion into a Fourier series.
  • the value of the measured vibration parameter is analyzed for its deviation from a specified reference value, and for the frequency representation of vibration, the amplitude spectrum of the vibration signal is analyzed for the detection of harmonics and/or sections of the spectrum corresponding to a reference pattern indicating the presence of damage to the conveyor belt (101), and/or harmonics exceeding in amplitude a specified reference value of the vibration parameter.
  • the reference value for the vibration parameter in the time representation can be set based on the average or peak values of this vibration parameter obtained in the time range of trouble-free operation of the belt conveyor.
  • the reference value for the amplitude of the vibration parameter in the frequency representation (amplitude spectrum of the vibration signal) is set based on the peak or average values of the amplitude in the amplitude spectrum of the vibration signal obtained in the time range of trouble-free operation of the belt conveyor.
  • the computing device (107) using a built-in algorithm for calculating parameters when processing vibration data from the device (106), can recognize characteristic patterns of damage to the conveyor belt (101) when analyzing the time and/or frequency representation of the vibration signal and/or the characteristic function (CF) of the vibration signal using analytical methods built into the processing algorithm or using an artificial neural network (ANN) trained on a sample of the vibration characteristics of the signals.
  • ANN artificial neural network
  • the HF of the vibration signal is calculated, wherein the reference HF is calculated on the basis of the vibration parameters corresponding to the fault-free mode of operation of the conveyor.
  • values obtained on the basis of the values of the parameters of the reference HF can be selected.
  • the computing device (107) can be connected to the belt conveyor control system in one of the following ways: via relay outputs, via the Modbus protocol or Profibus or Profinet networks. With this principle the connecting computing device (107) generates a signal for stopping the belt conveyor, transmitted to the belt conveyor control system, upon determining the presence of damage to the conveyor belt (101) based on the processing of data from the vibration measuring device (106).
  • Fig. 4 shows a general example of a computing device (400), for example, a computing unit (computing module), a computer, a server, a laptop, a smartphone, a SoC (System-on-a-Chip), etc., which can be used for a full or partial implementation of the claimed solution, in particular, for the implementation of devices (107, 108).
  • the device (400) contains such components as: one or more processors (401), at least one random access memory (402), a means for persistent data storage (403), input/output interfaces (404) including relay outputs for connection to belt conveyor motion control controllers, an I/O means (405), and a means for network interaction (406).
  • the processor (401) of the device performs the basic computing operations necessary for the operation of the device (400) or the functionality of one or more of its components.
  • the processor (401) executes the necessary machine-readable instructions contained in the RAM (402).
  • the memory (402) is usually implemented as RAM and contains the necessary software logic that provides the required functionality.
  • the data storage means (403) can be implemented as HDD, SSD disks, RAID array, network storage, flash memory, optical storage devices (CD, DVD, MD, Blue-Ray disks), etc.
  • the means (403) allows for long-term storage of various types of information, such as request processing history (logs), user identifiers, camera data, images, etc.
  • Interfaces (404) are standard means for connecting and working with computing devices. Interfaces (404) can be, for example, relay connections, USB, RS232/422/485 or others, RJ45, LPT, UART, COM, HDMI, PS/2, Lightning, FireWire, etc. for working, including, according to Modbus protocols and Probfibus networks.
  • the choice of interfaces (404) depends on the specific design of the device (400), which can be a computing unit (computing module), for example based on a CPU (one or more processors), a microcontroller, etc., a personal computer, a mainframe, a server cluster, a thin client, a smartphone, a laptop, etc., as well as connected third-party devices.
  • I/O data means (405) keyboard, joystick, display (touch display), projector, touchpad, mouse, trackball, light pen, speakers, microphone, etc.
  • Network interaction means (406) are selected from a device that provides network reception and transmission of data, for example, an Ethernet card, a WLAN/Wi-Fi module, a Bluetooth module, a BLE module, an NFC module, an IrDa, an RFID module, a GSM modem, etc.
  • the means (406) the organization of data exchange is ensured via a wired or wireless data transmission channel, for example, a WAN, PAN, LAN, Intranet, Internet, WLAN, WMAN or GSM, a quantum data transmission channel, satellite communications, etc.
  • the components of the device (400), as a rule are connected via a common data transmission bus.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Control Of Conveyors (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)

Abstract

L'invention concerne un procédé détermination automatisée de dommages d'une bande de transporteur, qui consiste à obtenir des données de mesures de vibration depuis un dispositif de mesure de vibration situé sur des éléments de la structure d'un transporteur à bande, et à effectuer un traitement des données. Lors du traitement, on effectue une comparaison des mesures avec une valeur de référence d'un paramètre de vibration témoignant de la présence de dommages de la bande de transporteur. On détermine ensuite la présence de dommages de la bande de transporteur dans le cas où les mesures de vibration diffèrent d'une valeur de référence par rapport au paramètre de vibration et/ou correspondent à un motif de référence de vibration témoignant de la présence de dommages de la bande de transporteur, on enregistre dans la mémoire d'un dispositif informatique des données sur les dommages découverts et/ou on les transmet vers un dispositif externe. Le résultat technique consiste en une augmentation de la précision de découverte de dommages d'une bande de transporteur par une analyse des données de vibration du transporteur.
PCT/RU2024/050159 2023-08-16 2024-07-18 Procédé et système de détermination automatisée de dommages de bande de transporteur Pending WO2025038008A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
ZA2025/02227A ZA202502227B (en) 2023-08-16 2025-03-12 Method and system for the automated detection of conveyor belt faults

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
RU2023121465 2023-08-16
RU2023121465A RU2816813C1 (ru) 2023-08-16 Способ и система автоматизированного определения повреждений конвейерной ленты на основании данных вибрации

Publications (1)

Publication Number Publication Date
WO2025038008A1 true WO2025038008A1 (fr) 2025-02-20

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PCT/RU2024/050159 Pending WO2025038008A1 (fr) 2023-08-16 2024-07-18 Procédé et système de détermination automatisée de dommages de bande de transporteur

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Country Link
WO (1) WO2025038008A1 (fr)
ZA (1) ZA202502227B (fr)

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