Belt conveying equipment monitoring method and device, computer equipment, readable storage medium and program product

Abstract

The invention relates to a belt conveying equipment monitoring method and device, computer equipment, a computer readable storage medium and a computer program product. The method comprises the steps that in the working process of the belt type conveying equipment, thermal imaging information and vibration information collected for a conveying belt in the belt type conveying equipment are obtained; analyzing the heating state of the conveying belt based on the thermal imaging information, and determining the heating state of the conveying belt; analyzing the vibration state of the conveying belt based on the vibration information, and determining the vibration state of the conveying belt; and the working state of the conveying belt is determined by combining the heated state and the vibration state. By adopting the method, the accuracy can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of conveyor monitoring and protection, and in particular to a belt conveyor equipment monitoring method, device, computer equipment, computer-readable storage medium and computer program product. Background Art

[0002] With the development of conveyor monitoring and protection technology, belt conveyor equipment monitoring technology has emerged, which can monitor the status of the conveyor belt in the belt conveyor equipment to ensure the normal progress of the conveying process.

[0003] In traditional technology, cameras are generally used to shoot conveyor belts, and the conveyor belt status is detected through the images obtained. However, in some industrial conveying fields, a lot of dust and dirt may be generated during the conveyor transport of goods, which will affect the clarity of the camera image acquisition, resulting in errors in the recognition and comparison of the front and back images, affecting the accuracy of the detection. Summary of the invention

[0004] Based on this, it is necessary to provide a belt conveyor equipment monitoring method, device, computer equipment, computer readable storage medium and computer program product that can improve detection accuracy in response to the above technical problems.

[0005] In a first aspect, the present application provides a belt conveyor equipment monitoring method, comprising:

[0006] During the operation of the belt conveyor equipment, obtaining thermal imaging information and vibration information collected from a conveyor belt in the belt conveyor equipment;

[0007] Analyzing the heating state of the conveyor belt based on the thermal imaging information to determine the heating state of the conveyor belt;

[0008] Performing a vibration state analysis on the conveyor belt based on the vibration information to determine the vibration state of the conveyor belt;

[0009] The conveyor belt working state of the conveyor belt is determined in combination with the heating state and the vibration state.

[0010] In one embodiment, the thermal imaging information includes thermal imaging values ​​corresponding to each of a plurality of detection areas in the conveyor belt; and the step of analyzing the heating state of the conveyor belt based on the thermal imaging information to determine the heating state of the conveyor belt includes:

[0011] Obtaining a temperature rise threshold value set for the conveyor belt;

[0012] Determine the temperature of the area represented by each of the thermal imaging values;

[0013] In the case where the temperature of at least one of the regions is greater than the temperature rise threshold, it is determined that the conveyor belt is in an abnormally heated state.

[0014] In one embodiment, the vibration information includes a plurality of vibration signals of the conveyor belt within a preset time period; and the step of analyzing the vibration state of the conveyor belt based on the vibration information to determine the vibration state of the conveyor belt includes:

[0015] Performing power spectrum analysis on the vibration information to determine frequency spectrum information corresponding to the vibration information;

[0016] Performing time-frequency domain analysis on the vibration information to determine time-frequency distribution information corresponding to the vibration information;

[0017] The vibration state of the conveyor belt is determined by combining the frequency spectrum information and the time-frequency distribution information.

[0018] In one embodiment, combining the frequency spectrum information and the time-frequency distribution information to determine the vibration state of the conveyor belt includes:

[0019] Get spectrum threshold and frequency change threshold;

[0020] Analyzing the power value of each frequency in the spectrum information based on the spectrum threshold to determine the spectrum state of the spectrum information;

[0021] Analyzing the frequency change rate in the time-frequency distribution information based on the frequency change threshold to determine the time-frequency distribution state of the time-frequency distribution information;

[0022] When at least one of the spectrum state or the time-frequency distribution state is in an abnormal state, it is determined that the conveyor belt is in an abnormal vibration state.

[0023] In one embodiment, the method further comprises:

[0024] When the working state of the conveyor belt is abnormal, determining the abnormal level of the conveyor belt;

[0025] Determine a feedback instruction that matches the abnormal level; the feedback instruction is used to instruct the information feedback device to output a corresponding feedback signal.

[0026] In a second aspect, the present application also provides a belt conveyor equipment monitoring system, the system comprising an infrared thermal imaging device, a vibration measuring optical fiber, and a control device;

[0027] The infrared thermal imaging device is arranged on the belt conveyor device, and is used to perform infrared detection on the conveyor belt in the belt conveyor device to obtain thermal imaging information of the conveyor belt;

[0028] The vibration measuring optical fiber is attached to the conveyor belt and is used to measure the vibration information of the conveyor belt;

[0029] The control device is used to implement the method described in any one of the above embodiments.

[0030] In a third aspect, the present application also provides a belt conveyor equipment monitoring device, comprising:

[0031] An information acquisition module, used to acquire thermal imaging information and vibration information collected from a conveyor belt in the belt conveyor device during operation of the belt conveyor device;

[0032] A heating state determination module, used for analyzing the heating state of the conveyor belt based on the thermal imaging information to determine the heating state of the conveyor belt;

[0033] A vibration state determination module, used for performing a vibration state analysis on the conveyor belt based on the vibration information to determine the vibration state of the conveyor belt;

[0034] The working state determination module is used to determine the working state of the conveyor belt in combination with the heating state and the vibration state.

[0035] In a fourth aspect, the present application further provides a computer device, wherein the computer device comprises a memory and a processor, wherein the memory stores a computer program, and when the processor executes the computer program, the steps of the above method are implemented.

[0036] In a fifth aspect, the present application further provides a computer-readable storage medium having a computer program stored thereon, and the computer program implements the steps of the above method when executed by a processor.

[0037] In a sixth aspect, the present application further provides a computer program product, wherein the computer program product comprises a computer program, and when the computer program is executed by a processor, the steps of the above method are implemented.

[0038] The above-mentioned belt conveyor equipment monitoring method, device, computer equipment, computer-readable storage medium and computer program product can obtain thermal imaging information and vibration information collected from the conveyor belt in the belt conveyor equipment during the operation of the belt conveyor equipment, so as to determine the actual condition of the conveyor belt during the operation of the belt conveyor equipment. The heating state of the conveyor belt is analyzed based on the thermal imaging information to determine the heating state of the conveyor belt, so as to accurately determine the heating condition of the conveyor belt. The vibration state of the conveyor belt is analyzed based on the vibration information to determine the vibration state of the conveyor belt. Since both heat and vibration can affect the working state of the conveyor belt, the working state of the conveyor belt can be determined in combination with the heating state and the vibration state. The conveyor belt can be monitored through double judgment, so as to effectively increase the accuracy of conveyor belt monitoring. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the technical solutions in the embodiments of the present application or related technologies, the drawings required for use in the embodiments of the present application or related technical descriptions will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0040] Figure 1 A diagram showing an application environment of a belt conveyor equipment monitoring method in one embodiment;

[0041] Figure 2 A schematic diagram of a process of a belt conveyor equipment monitoring method in one embodiment;

[0042] Figure 3 A schematic flow chart of a belt conveyor equipment monitoring step in one embodiment;

[0043] Figure 4 A schematic diagram of a flow chart of a vibration state analysis step in one embodiment;

[0044] Figure 5 is a schematic flow chart of a thermal imaging state analysis step in one embodiment;

[0045] Figure 6 It is a structural block diagram of a belt conveyor equipment monitoring system in one embodiment;

[0046] Figure 7 A schematic diagram of a flow chart of a belt conveyor equipment monitoring method in another embodiment;

[0047] Figure 8 It is a structural block diagram of a belt conveyor equipment monitoring device in one embodiment;

[0048] Fig. 9 FIG. 4 is a diagram showing the internal structure of a computer device in one embodiment. DETAILED DESCRIPTION

[0049] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0050] The belt conveyor equipment monitoring method provided in the embodiment of the present application can be applied to Figure 1 In the application environment shown. The control device 102 communicates with the infrared thermal imaging device 104 and the vibration measuring optical fiber 106 through the network. The control device 102 may be, but is not limited to, various personal computers, laptops, smart phones, tablet computers, Internet of Things devices and portable wearable devices. The Internet of Things devices may be smart speakers, smart TVs, smart air conditioners, smart car-mounted devices, projection devices, etc. Portable wearable devices may be smart watches, smart bracelets, head-mounted devices, etc. The head-mounted devices may be virtual reality (VR) devices, augmented reality (AR) devices, smart glasses, etc. The infrared thermal imaging device 104, commonly referred to as an infrared thermal imager or infrared thermal imager, is a device that uses infrared thermal imaging technology to detect the infrared radiation of the target object, and converts the image of the temperature distribution of the target object into a visible image by means of signal processing, photoelectric conversion, etc. The vibration measuring optical fiber 106 can be used for vibration monitoring. Specifically, when the control device 102 is monitoring the belt conveyor equipment and when the belt conveyor equipment is working, thermal imaging information and vibration information collected for the conveyor belt in the belt conveyor equipment are respectively obtained from the infrared thermal imaging device 104 and the vibration measuring optical fiber 106; the heating state of the conveyor belt is analyzed based on the thermal imaging information to determine the heating state of the conveyor belt; the vibration state of the conveyor belt is analyzed based on the vibration information to determine the vibration state of the conveyor belt; and the working state of the conveyor belt is determined in combination with the heating state and the vibration state.

[0051] In an exemplary embodiment, Figure 2 As shown, a belt conveyor equipment monitoring method is provided, and the method is applied to Figure 1 Taking the control device 102 in the example as an example, the method includes the following steps:

[0052] Step S202: during the operation of the belt conveyor device, obtaining thermal imaging information and vibration information collected from the conveyor belt in the belt conveyor device.

[0053] Among them, the belt conveyor equipment is a mechanical device for continuously conveying materials. For example, the belt conveyor equipment may include a fixed belt conveyor, a mobile belt conveyor, and a tubular belt conveyor. The conveyor belt is a flexible circulation device for continuously conveying materials. During long-term use, the conveyor belt may tear, which may cause the conveyed materials to fall and affect the normal conveying process. Therefore, it is necessary to detect the working state of the conveyor belt. Thermal imaging information is collected by infrared thermal imaging equipment to reflect the temperature distribution state of the conveyor belt. For example, thermal imaging information may include thermal imaging values ​​corresponding to multiple detection areas in the conveyor belt or thermal imaging images of the conveyor belt. Vibration information is collected by vibration measuring optical fiber to reflect the vibration state of the conveyor belt. For example, vibration information may include multiple vibration signals of the conveyor belt within a preset time period.

[0054] Specifically, during the operation of the belt conveyor equipment, the conveyor belt may tear, which may cause the conveyed material to fall and affect the normal progress of the conveying process. Therefore, it is necessary to detect the working state of the conveyor belt. For example, since the temperature and vibration conditions will affect the working state of the conveyor belt, the thermal imaging information and vibration information of the conveyor belt can be obtained and analyzed respectively to determine the working state of the conveyor belt. Optionally, the operation of obtaining the thermal imaging information and vibration information collected for the conveyor belt in the belt conveyor equipment can be active acquisition or passive reception.

[0055] Step S204: analyzing the heating state of the conveyor belt based on the thermal imaging information to determine the heating state of the conveyor belt.

[0056] Among them, the heating state of the conveyor belt mainly refers to the physical and chemical properties of the conveyor belt due to the influence of temperature in the working environment.

[0057] Specifically, excessively high temperature of the conveyor belt may cause performance degradation of the conveyor belt material, such as reduced elasticity and weakened strength, which means that the conveyor belt is at risk of breaking or has already broken. Since thermal imaging information can reflect the temperature distribution of the conveyor belt, the heating state of the conveyor belt can be analyzed based on the thermal imaging information to determine the heating state of the conveyor belt.

[0058] In some specific embodiments, the thermal imaging information includes thermal imaging values ​​corresponding to multiple detection areas in the conveyor belt. The control device can obtain a temperature rise threshold set for the conveyor belt, determine the regional temperature represented by each thermal imaging value, and determine that the conveyor belt is in an abnormal heating state when at least one regional temperature is greater than the temperature rise threshold. In other specific embodiments, the control device can also obtain a temperature distribution condition set for the conveyor belt. If the temperature distribution represented by the thermal imaging information does not meet the temperature distribution condition, it indicates that the conveyor belt is in an abnormal heating state.

[0059] Step S206: analyzing the vibration state of the conveyor belt based on the vibration information to determine the vibration state of the conveyor belt.

[0060] Among them, the vibration state is used to characterize the vibration of the conveyor belt during the material conveying process.

[0061] Specifically, the abnormal conveying or breaking process of the conveyor belt will affect the vibration state of the conveyor belt. Therefore, the vibration state of the conveyor belt can be analyzed based on the vibration information to determine the vibration state of the conveyor belt, and then the working state of the conveyor belt can be determined. In some specific embodiments, the control device can perform power spectrum analysis on the vibration information to determine the frequency spectrum information corresponding to the vibration information, perform time-frequency domain analysis on the vibration information to determine the time-frequency distribution information corresponding to the vibration information, and combine the frequency spectrum information and the time-frequency distribution information to determine the vibration state of the conveyor belt. In other specific embodiments, the control device can also set a vibration signal threshold condition. If the vibration signal in the vibration information does not meet the vibration signal threshold condition, it indicates that the conveyor belt is in an abnormal vibration state.

[0062] Step S208, determining the conveyor belt working state of the conveyor belt in combination with the heating state and the vibration state.

[0063] The working state of the conveyor belt refers to the state of the conveyor belt during operation. For example, the working state of the conveyor belt may include a normal state and an abnormal state.

[0064] Specifically, since both the heating state and the vibration state are related to the working state of the conveyor belt, the working state of the conveyor belt can be determined in combination with the heating state and the vibration state. It can be understood that when both the heating state and the vibration state are abnormal, the working state of the conveyor belt is an abnormal state, and the abnormality level is high; when only one of the heating state and the vibration state is abnormal, the working state of the conveyor belt is an abnormal state, and the abnormality level is low; when both the heating state and the vibration state are normal, the working state of the conveyor belt is normal.

[0065] The above-mentioned belt conveyor equipment monitoring method obtains thermal imaging information and vibration information collected from the conveyor belt in the belt conveyor equipment during the operation of the belt conveyor equipment, so as to determine the actual condition of the conveyor belt during the operation of the belt conveyor equipment. The heating condition of the conveyor belt is analyzed based on the thermal imaging information to determine the heating condition of the conveyor belt, so as to accurately determine the heating condition of the conveyor belt. The vibration condition of the conveyor belt is analyzed based on the vibration information to determine the vibration condition of the conveyor belt. Since both heat and vibration will affect the working condition of the conveyor belt, the working condition of the conveyor belt is determined in combination with the heating condition and the vibration condition. The conveyor belt can be monitored through double judgment, so as to effectively increase the accuracy of conveyor belt monitoring.

[0066] In an exemplary embodiment, a heating state analysis of a conveyor belt is performed based on thermal imaging information to determine the heating state of the conveyor belt, including: obtaining a temperature rise threshold set for the conveyor belt; determining the regional temperature represented by each thermal imaging value; and determining that the conveyor belt is in an abnormal heating state when at least one regional temperature is greater than the temperature rise threshold.

[0067] The thermal imaging information includes the thermal imaging values ​​corresponding to multiple detection areas in the conveyor belt. The temperature rise threshold refers to the maximum temperature rise allowed by the equipment or system during operation. Once the temperature rise exceeds this threshold, an alarm mechanism may be triggered or other protective measures may be taken to prevent equipment damage or safety accidents.

[0068] Specifically, if the temperature of a certain detection area in the conveyor belt exceeds the temperature rise threshold, it indicates that the conveyor belt may be broken or the conveying is abnormal in the detection area. Therefore, the control device can first obtain the temperature rise threshold set for the conveyor belt, and determine the regional temperature represented by each thermal imaging value, and compare the temperature of each region with the temperature rise threshold. If there is at least one region whose temperature is greater than the temperature rise threshold, it can be determined that the conveyor belt is in an abnormal heating state. Exemplarily, the temperature rise threshold can be set according to actual experience.

[0069] Optionally, in order to improve the accuracy of the thermal state analysis, double verification can be performed, that is, a temperature rise threshold and a normal temperature threshold are preset, and for each area temperature, the area temperature is compared with the temperature rise threshold and the normal temperature threshold. When the area temperature is greater than the normal temperature threshold and greater than the temperature rise threshold, the detection area where the area temperature is located is determined to be an abnormal detection area.

[0070] In this embodiment, by comparing the regional temperature of each detection area with the temperature rise threshold value and determining the heating state of the conveyor belt according to the comparison result, the accuracy of determining the heating state can be improved.

[0071] In an exemplary embodiment, the vibration information includes multiple vibration signals of the conveyor belt within a preset time period; the vibration state of the conveyor belt is analyzed based on the vibration information to determine the vibration state of the conveyor belt, including: performing power spectrum analysis on the vibration information to determine the frequency spectrum information corresponding to the vibration information; performing time-frequency domain analysis on the vibration information to determine the time-frequency distribution information corresponding to the vibration information; and combining the frequency spectrum information and the time-frequency distribution information to determine the vibration state of the conveyor belt.

[0072] Among them, the spectrum information can reflect the power distribution of each frequency component of the vibration signal. Time-frequency domain analysis is a method of mapping a one-dimensional time domain signal to a two-dimensional time-frequency plane, which can comprehensively reflect the time-frequency joint characteristics of the signal. The time-frequency distribution information can reflect the energy density and intensity of the vibration signal at different times and frequencies, which helps to capture the local time-varying characteristics of the vibration signal and further determine the vibration state of the conveyor belt.

[0073] Specifically, after obtaining the vibration information, the control device can perform power spectrum analysis and time-frequency domain analysis on the vibration information, and determine the vibration state of the conveyor belt by combining the obtained spectrum information and time-frequency distribution information. It can be understood that the control device can make a comprehensive judgment on the vibration state of the conveyor belt by combining the spectrum information and the time-frequency distribution information. If there are abnormal frequency components in the spectrum diagram, or there are obvious energy mutations in the time-frequency distribution diagram, then it can be judged that the conveyor belt has a vibration fault or abnormal state.

[0074] In this embodiment, the control device performs power spectrum analysis and time-frequency domain analysis on the vibration information respectively, and determines the vibration state of the conveyor belt by combining the obtained spectrum information and time-frequency distribution information, which can improve the accuracy of the vibration state determination.

[0075] In an exemplary embodiment, the vibration state of the conveyor belt is determined by combining the spectrum information and the time-frequency distribution information, including: obtaining a spectrum threshold and a frequency change threshold; analyzing the power value of each frequency in the spectrum information based on the spectrum threshold to determine the spectrum state of the spectrum information; analyzing the frequency change rate in the time-frequency distribution information based on the frequency change threshold to determine the time-frequency distribution state of the time-frequency distribution information; and determining that the conveyor belt is in an abnormal vibration state when at least one of the spectrum state or the time-frequency distribution state is an abnormal state.

[0076] The spectrum threshold and the frequency change threshold are both preset thresholds.

[0077] Specifically, if there are abnormal frequency components in the spectrum graph, or there is an obvious energy mutation in the time-frequency distribution graph, then it can be determined that the conveyor belt has a vibration fault or abnormal state, that is, the control device can first obtain the spectrum threshold and the frequency change threshold, and analyze the power values ​​of each frequency in the spectrum information based on the spectrum threshold. If there is a power value exceeding the spectrum threshold, then the spectrum state of the spectrum information is determined to be an abnormal state; based on the frequency change threshold, the frequency change rate in the time-frequency distribution information is analyzed. If there is a frequency change rate higher than the frequency change threshold, then the time-frequency distribution state of the time-frequency distribution information is determined to be an abnormal state. Finally, when at least one of the spectrum state or the time-frequency distribution state is an abnormal state, it is determined that the conveyor belt is in an abnormal vibration state. It can be understood that if the spectrum state or the time-frequency distribution state are both normal, it is determined that the conveyor belt is in a normal vibration state.

[0078] In this embodiment, the obtained spectrum information and time-frequency distribution information are analyzed respectively by using the spectrum threshold and the frequency change threshold, and the vibration state of the conveyor belt is finally determined, which can improve the accuracy of the vibration state determination.

[0079] In an exemplary embodiment, the belt conveyor equipment monitoring method further includes: when the working state of the conveyor belt is an abnormal state, determining the abnormal level of the conveyor belt; and determining a feedback instruction matching the abnormal level.

[0080] The abnormality level can be used to characterize the abnormality degree of the conveyor belt. The feedback instruction is used to instruct the information feedback device to output a corresponding feedback signal.

[0081] Specifically, when the conveyor belt is in an abnormal state, in order to more accurately determine the abnormal situation of the conveyor belt, different abnormal levels can be set for the conveyor belt according to the abnormal situation of the conveyor belt, and then the feedback instructions matching the abnormal level can be determined. After the information feedback device receives the feedback instruction, it can output the corresponding feedback signal, and the technician can determine the specific abnormal situation of the conveyor belt according to the feedback signal. Exemplarily, two abnormal levels can be set: general abnormality and special abnormality, and the above two abnormal levels correspond to warning and shutdown instructions respectively.

[0082] In this embodiment, when the conveyor belt is in an abnormal state, different abnormal levels are divided and corresponding feedback instructions are determined, which can accurately reflect the specific abnormal situation of the conveyor belt and improve the efficiency of handling the abnormalities of the conveyor belt.

[0083] In an exemplary embodiment, Figure 1As shown, a belt conveyor equipment monitoring system is also provided, the system includes an infrared thermal imaging device 104, a vibration measuring optical fiber 106, and a control device 102; the infrared thermal imaging device is arranged on the belt conveyor equipment, and is used to perform infrared detection on the conveyor belt in the belt conveyor equipment to obtain thermal imaging information of the conveyor belt; the vibration measuring optical fiber is attached to the conveyor belt, and is used to measure the vibration information of the conveyor belt; the control device is used to implement the method in any one of the above embodiments.

[0084] The infrared thermal imaging device 104, usually called an infrared thermal imager or infrared thermal imager, is a device that uses infrared thermal imaging technology to detect the infrared radiation of the target object and converts the image of the temperature distribution of the target object into a visible image by means of signal processing, photoelectric conversion, etc. The vibration measuring optical fiber 106 can use optical fiber for vibration monitoring.

[0085] Specifically, when the control device 102 monitors the belt conveyor equipment, during the operation of the belt conveyor equipment, thermal imaging information and vibration information collected for the conveyor belt in the belt conveyor equipment are respectively obtained from the infrared thermal imaging device 104 and the vibration measuring optical fiber 106; the heating state of the conveyor belt is analyzed based on the thermal imaging information to determine the heating state of the conveyor belt; the vibration state of the conveyor belt is analyzed based on the vibration information to determine the vibration state of the conveyor belt; and the working state of the conveyor belt is determined in combination with the heating state and the vibration state.

[0086] In a specific embodiment, a device and method for monitoring the tearing of a tape based on the temperature-vibration recognition integrated technology are also provided, including infrared thermal imaging equipment, vibration-measuring optical fiber, monitoring host, control equipment and other devices. The infrared thermal imaging equipment and vibration-measuring optical fiber are respectively installed in the middle of the head and tail roller frames and the longitudinal beam channel steels on both sides of the conveyor. The collected temperature and vibration signals are respectively transmitted to the temperature monitoring host and the vibration monitoring host. The respective monitoring hosts collect data and process the signal characteristics. The control device makes a comprehensive judgment based on the data processing results combined with the optical images obtained by the dual-spectrum thermal imaging, and transmits the tape tear warning or shutdown command signal to the dispatching platform for fault processing.

[0087] Fiber optic sensing technology consists of vibration-measuring optical fiber, optical fiber sensitizer, vibration monitoring host, etc. Vibration-measuring optical fiber is laid on the longitudinal beam channel steel on both sides of the belt conveyor. The bending radius of the optical fiber should not be too small during laying, which will easily affect its mechanical and optical properties. Fiber optic sensitizers are installed at intervals to enhance the optical fiber's recognition of vibration signals and improve the accuracy of fiber optic vibration measurement. Vibration signals of the entire conveyor belt can be extracted.

[0088] like Figure 3As shown in the figure, infrared thermal imaging technology consists of infrared thermal imaging equipment, temperature monitoring host, etc. The infrared thermal imaging equipment is installed in the middle of the conveyor beam. During installation, the monitoring tape area can be adjusted by adjusting the installation angle, and the temperature of the tape plane in this area is identified. The tape temperature data is collected by non-contact temperature measurement means, and the temperature data is transmitted to the temperature monitoring host.

[0089] The control equipment includes a vibration monitoring host and a temperature monitoring host, which are installed in the distribution room of the belt conveyor. The vibration monitoring host receives the conveyor vibration signal obtained by the vibration measuring optical fiber, and obtains the vibration signal characteristics through noise reduction, filtering and other methods. The system makes judgments through methods such as power spectrum analysis to extract data features and threshold judgment. The abnormality is 1 and the opposite is 0.

[0090] The temperature monitoring host processes the thermal imaging information and optical images obtained by the infrared thermal imaging device, analyzes the temperature signal according to the temperature measurement algorithm inside the temperature monitoring host, sets the corresponding threshold according to the characteristic reference value, identifies the characteristics of sudden temperature rise and high temperature abnormality in the monitored area, and makes judgments. The abnormality is 1 and the opposite is 0.

[0091] The control equipment combines the thermal imaging information, vibration information judgment and the optical image obtained by the infrared thermal imaging equipment to make a comprehensive judgment to obtain the conveyor belt monitoring results, and transmits the belt tear warning or shutdown command signal to the dispatching platform for fault processing, thereby realizing the monitoring and protection of conveyor belt tear faults.

[0092] Specifically, the specific steps of a tape tear monitoring device and method based on temperature vibration recognition integrated technology are as follows:

[0093] Step 1: The vibration measuring optical fiber collects the vibration signal of the belt at the longitudinal beam channel steel on both sides of the conveyor, and transmits it to the monitoring host for processing in the form of Rayleigh scattered light waves; the infrared thermal imaging equipment obtains the thermal imaging information of the belt in the monitoring area and transmits the optical image data to the temperature monitoring host for processing.

[0094] Step 2: If Figure 4 As shown, the vibration monitoring host receives the signal obtained by the vibration measuring optical fiber and processes it by methods such as photoelectric conversion, filtering, and noise reduction to obtain the vibration signal characteristics during the operation of the conveyor. The high-frequency band characteristic values ​​are extracted by power spectrum analysis and time-frequency domain analysis respectively. The high-frequency band power spectrum density of each monitoring point is used as a reference to set the threshold for judgment. If the threshold is exceeded and there is an energy mutation, it is judged as abnormal 1, otherwise it is normal 0, and the judgment signal is transmitted to the control device.

[0095] Step 3: If Figure 5As shown, the temperature monitoring host receives the thermal imaging information and optical image data collected by the infrared thermal imaging device, uses the built-in temperature measurement algorithm to process the thermal imaging information, sets the normal temperature threshold and temperature rise threshold of the tape, and then compares the temperature signal characteristic value with the threshold for judgment. If the temperature threshold and the temperature rise threshold are exceeded, it is judged as abnormal 1, otherwise it is normal 0, and the processed signal and optical image data are transmitted to the control device.

[0096] Step 4: The control equipment combines the temperature and vibration signal processing results with the optical image for comprehensive judgment. There are three judgment results: normal 0, general abnormality 1, and special abnormality 2. Corresponding no response, warning, and shutdown instructions are issued and uploaded to the dispatching platform. The command signal makes an execution decision through the network interrupter and PLC control cabinet.

[0097] like Figure 6 As shown, this embodiment provides a device and method for monitoring the tearing of a tape based on the temperature-vibration identification integrated technology, including an infrared thermal imaging device 104, a vibration-measuring optical fiber 106, a control device 102 and other devices. The infrared thermal imaging device 104 and the vibration-measuring optical fiber 106 are respectively installed at the middle of the head and tail roller frames and the longitudinal beam channel steels on both sides of the conveyor, and the collected temperature and vibration signals are respectively transmitted to the temperature monitoring host 1022 and the vibration monitoring host 1021. The respective monitoring hosts collect data and process the signal characteristics. The system makes a comprehensive judgment based on the data processing results combined with the optical images obtained by the dual-spectrum thermal imaging, and transmits the tape tear warning or shutdown command signal to the dispatching platform for fault processing.

[0098] The fiber optic sensing technology consists of a vibration measuring optical fiber 106, an optical fiber sensitizer 108, a vibration monitoring host 1021, etc. The vibration measuring optical fiber 106 is laid on the longitudinal beam channel steel positions on both sides of the belt conveyor. The bending radius of the optical fiber should not be too small during laying, which will easily affect its mechanical and optical properties. The optical fiber sensitizer 108 is installed at a distance to enhance the optical fiber's recognition of vibration signals and improve the accuracy of optical fiber vibration measurement. Vibration signals of the entire conveyor belt can be extracted.

[0099] The infrared thermal imaging technology consists of an infrared thermal imaging device 104, a temperature monitoring host 1022, etc. The infrared thermal imaging device 104 is installed in the middle position of the conveyor beam 3. During installation, the monitoring tape area can be adjusted by adjusting the installation angle, and the temperature of the tape plane in this area is identified. The tape temperature data is collected by non-contact temperature measurement means, and the temperature data is transmitted to the temperature monitoring host 1022.

[0100] The control device 102 includes a vibration monitoring host 1021 and a temperature monitoring host 1022, which are installed in the distribution room of the belt conveyor. The vibration monitoring host 1021 receives the conveyor vibration signal obtained by the vibration measuring optical fiber 106, obtains the vibration signal characteristics through noise reduction, filtering and other methods, and makes judgments through methods such as extracting data features through power spectrum analysis and threshold judgment. The abnormality is 1 and the opposite is 0.

[0101] The temperature monitoring host 1022 processes the temperature signal and optical image obtained by the infrared thermal imaging device 104, analyzes the temperature signal according to the internal temperature measurement algorithm of the temperature monitoring host 1022, sets the corresponding threshold according to the characteristic reference value, identifies the characteristics of sudden temperature rise and high temperature abnormality in the monitored area, and makes a judgment, where the abnormality is 1 and the abnormality is 0.

[0102] The control device 102 combines the temperature and vibration signal data with the optical image obtained by the infrared thermal imaging device 104, makes a comprehensive judgment to obtain the conveyor belt monitoring result, and transmits the belt tear warning or shutdown command signal to the dispatching platform for fault processing, thereby realizing the monitoring and protection of conveyor belt tear faults.

[0103] The specific steps of a tape tear monitoring device and method based on temperature vibration recognition integrated technology are as follows:

[0104] Step 1: The vibration measuring optical fiber collects the belt vibration signal at the longitudinal beam channel steel on both sides of the conveyor, and transmits it to the vibration monitoring host for processing in the form of Rayleigh scattered light waves; the infrared thermal imaging equipment obtains the temperature signal of the belt in the monitoring area and transmits the optical image data to the temperature monitoring host for processing.

[0105] Step 2: The vibration monitoring host receives the signal obtained by the vibration measuring optical fiber and processes it by methods such as photoelectric conversion, filtering, and noise reduction to obtain the vibration signal characteristics during the operation of the conveyor. The high-frequency band characteristic values ​​are extracted by power spectrum analysis and time-frequency domain analysis respectively. The high-frequency band power spectrum density of each monitoring point is used as a reference to set the threshold for judgment. If the threshold is exceeded and there is an energy mutation, it is judged as abnormal 1, otherwise it is normal 0, and the judgment signal is transmitted to the control device.

[0106] Step 3: The temperature monitoring host receives the temperature signal and optical image data collected by the infrared thermal imaging device, processes the temperature signal using the built-in temperature measurement algorithm, sets the normal temperature threshold and temperature rise threshold of the tape, and then compares the temperature signal characteristic value with the threshold for judgment. If the temperature threshold and the temperature rise threshold are exceeded, it is judged as abnormal 1, otherwise it is normal 0, and the processed signal and optical image data are transmitted to the control device.

[0107] Step 4: The control equipment combines the temperature and vibration signal processing results with the optical image for comprehensive judgment. There are three judgment results: normal 0, general abnormality 1, and special abnormality 2. Corresponding no response, warning, and shutdown instructions are issued and uploaded to the dispatching platform. The command signal makes an execution decision through the network interrupter and PLC control cabinet.

[0108] In a specific embodiment, Figure 7 As shown, a belt conveyor equipment monitoring method is also provided, comprising:

[0109] Step S701, during the operation of the belt conveyor device, obtaining thermal imaging information and vibration information collected from a conveyor belt in the belt conveyor device;

[0110] The thermal imaging information includes the thermal imaging values ​​corresponding to the multiple detection areas in the conveyor belt; the vibration information includes multiple vibration signals of the conveyor belt within a preset time period;

[0111] Step S702, obtaining a temperature rise threshold set for the conveyor belt, and determining the regional temperature represented by each thermal imaging value;

[0112] Step S703, when there is at least one area whose temperature is greater than the temperature rise threshold, determining that the conveyor belt is in an abnormally heated state;

[0113] Step S704, performing power spectrum analysis on the vibration information to determine frequency spectrum information corresponding to the vibration information, and performing time-frequency domain analysis on the vibration information to determine time-frequency distribution information corresponding to the vibration information;

[0114] Step S705, obtaining a spectrum threshold and a frequency change threshold, analyzing the power value of each frequency in the spectrum information based on the spectrum threshold, and determining the spectrum state of the spectrum information;

[0115] Step S706, analyzing the frequency change rate in the time-frequency distribution information based on the frequency change threshold, and determining the time-frequency distribution state of the time-frequency distribution information;

[0116] Step S707, when at least one of the spectrum state or the time-frequency distribution state is in an abnormal state, determining that the conveyor belt is in an abnormal vibration state;

[0117] Step S708, determining the conveyor belt working state of the conveyor belt in combination with the heating state and the vibration state;

[0118] Step S709, when the working state of the conveyor belt is abnormal, determining the abnormal level of the conveyor belt;

[0119] Step S710, determining a feedback instruction matching the abnormal level;

[0120] The feedback instruction is used to instruct the information feedback device to output a corresponding feedback signal.

[0121] It should be understood that, although the steps in the flowcharts involved in the above embodiments are displayed in sequence according to the indication of the arrows, these steps are not necessarily executed in sequence according to the order indicated by the arrows. Unless there is a clear explanation in this article, the execution of these steps is not strictly limited in order, and these steps can be executed in other orders. Moreover, at least a part of the steps in the flowcharts involved in the above embodiments may include multiple steps or multiple stages, and these steps or stages are not necessarily executed at the same time, but can be executed at different times, and the execution order of these steps or stages is not necessarily carried out in sequence, but can be executed in turn or alternately with other steps or at least a part of the steps or stages in other steps.

[0122] Based on the same inventive concept, the embodiment of the present application also provides a belt conveyor equipment monitoring device for implementing the belt conveyor equipment monitoring method involved above. The implementation scheme for solving the problem provided by the device is similar to the implementation scheme recorded in the above method, so the specific limitations in one or more belt conveyor equipment monitoring device embodiments provided below can refer to the limitations of the belt conveyor equipment monitoring method above, and will not be repeated here.

[0123] In an exemplary embodiment, Figure 8 As shown, a belt conveyor equipment monitoring device 800 is provided, comprising: an information acquisition module 802, a heating state determination module 804, a vibration state determination module 806 and a working state determination module 808, wherein:

[0124] The information acquisition module 802 is used to acquire thermal imaging information and vibration information collected from the conveyor belt in the belt conveyor device during the operation of the belt conveyor device;

[0125] A heating state determination module 804 is used to analyze the heating state of the conveyor belt based on the thermal imaging information to determine the heating state of the conveyor belt;

[0126] A vibration state determination module 806 is used to analyze the vibration state of the conveyor belt based on the vibration information to determine the vibration state of the conveyor belt;

[0127] The working state determination module 808 is used to determine the working state of the conveyor belt based on the heating state and the vibration state.

[0128] In an exemplary embodiment, the thermal imaging information includes thermal imaging values ​​corresponding to a plurality of detection areas in the conveyor belt. In this embodiment, the heating state determination module 804 is specifically used to:

[0129] Get the temperature rise threshold set for the conveyor belt;

[0130] Determine the temperature of the area represented by each thermal imaging value;

[0131] When there is at least one area whose temperature is greater than the temperature rise threshold, it is determined that the conveyor belt is in an abnormal heating state.

[0132] In an exemplary embodiment, the vibration information includes a plurality of vibration signals of the conveyor belt within a preset time period. In the case of this embodiment, the vibration state determination module 806 includes:

[0133] A power spectrum analysis unit, used to perform power spectrum analysis on the vibration information to determine the frequency spectrum information corresponding to the vibration information;

[0134] A time-frequency domain analysis unit, used to perform time-frequency domain analysis on the vibration information to determine the time-frequency distribution information corresponding to the vibration information;

[0135] The vibration state determination unit is used to determine the vibration state of the conveyor belt by combining the spectrum information and the time-frequency distribution information.

[0136] In an exemplary embodiment, the vibration state determination unit is specifically configured to:

[0137] Get spectrum threshold and frequency change threshold;

[0138] Analyze the power value of each frequency in the spectrum information based on the spectrum threshold to determine the spectrum state of the spectrum information;

[0139] Analyzing the frequency change rate in the time-frequency distribution information based on the frequency change threshold to determine the time-frequency distribution state of the time-frequency distribution information;

[0140] When at least one of the spectrum state or the time-frequency distribution state is in an abnormal state, it is determined that the conveyor belt is in an abnormal vibration state.

[0141] In an exemplary embodiment, the belt conveyor equipment monitoring device 800 further includes a feedback module, which is specifically used to:

[0142] When the working state of the conveyor belt is abnormal, determine the abnormal level of the conveyor belt;

[0143] Determine a feedback instruction that matches the abnormality level; the feedback instruction is used to instruct the information feedback device to output a corresponding feedback signal.

[0144] Each module in the above-mentioned belt conveyor equipment monitoring device can be implemented in whole or in part by software, hardware and a combination thereof. Each of the above-mentioned modules can be embedded in or independent of the processor in the computer device in the form of hardware, or can be stored in the memory in the computer device in the form of software, so that the processor can call and execute the corresponding operations of each of the above modules.

[0145] In an exemplary embodiment, a computer device is provided. The computer device may be a terminal, and its internal structure diagram may be as shown in FIG. Fig. 9 As shown. The computer device includes a processor, a memory, an input / output interface, a communication interface, a display unit and an input device. The processor, the memory and the input / output interface are connected through a system bus, and the communication interface, the display unit and the input device are connected to the system bus through the input / output interface. The processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The input / output interface of the computer device is used to exchange information between the processor and the external device. The communication interface of the computer device is used to communicate with an external terminal in a wired or wireless manner, and the wireless manner can be realized through WIFI, a mobile cellular network, near field communication (Near Field Communication, NFC) or other technologies. When the computer program is executed by the processor, a belt conveyor equipment monitoring method is realized. The display unit of the computer device is used to form a visually visible picture, which can be a display screen, a projection device or a virtual reality imaging device. The display screen can be a liquid crystal display screen or an electronic ink display screen, and the input device of the computer device can be a touch layer covering the display screen, or a button, trackball or touchpad set on the computer device shell, or an external keyboard, touchpad or mouse.

[0146] Those skilled in the art will understand that Fig. 9 The structure shown in the figure is only a block diagram of a part of the structure related to the solution of the present application, and does not constitute a limitation on the computer device to which the solution of the present application is applied. The specific computer device may include more or fewer components than those shown in the figure, or combine certain components, or have a different arrangement of components.

[0147] In one embodiment, a computer device is provided, including a memory and a processor, wherein a computer program is stored in the memory, and the processor implements the steps of the above method when executing the computer program.

[0148] In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored, and when the computer program is executed by a processor, the steps of the above method are implemented.

[0149] In one embodiment, a computer program product is provided, comprising a computer program, which implements the steps of the above method when executed by a processor.

[0150] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, stored data, displayed data, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties, and the collection, use and processing of relevant data must comply with relevant regulations.

[0151] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiments can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to the memory, database or other medium used in the embodiments provided in this application can include at least one of non-volatile memory and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. As an illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM). The database involved in each embodiment provided in this application may include at least one of a relational database and a non-relational database. Non-relational databases may include distributed databases based on blockchains, etc., but are not limited to this. The processor involved in each embodiment provided in this application may be a general-purpose processor, a central processing unit, a graphics processor, a digital signal processor, a programmable logic device, a data processing logic device based on quantum computing, an artificial intelligence (AI) processor, etc., but are not limited to this.

[0152] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this application.

[0153] The above embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. A belt conveyor equipment monitoring method, characterized in that: The method comprises: During the operation of the belt conveyor equipment, obtaining thermal imaging information and vibration information collected from a conveyor belt in the belt conveyor equipment; Analyzing the heating state of the conveyor belt based on the thermal imaging information to determine the heating state of the conveyor belt; Performing a vibration state analysis on the conveyor belt based on the vibration information to determine the vibration state of the conveyor belt; The conveyor belt working state of the conveyor belt is determined in combination with the heating state and the vibration state.

2. The method according to claim 1, characterized in that The thermal imaging information includes thermal imaging values ​​corresponding to each of the plurality of detection areas in the conveyor belt; and the thermal state analysis of the conveyor belt based on the thermal imaging information to determine the thermal state of the conveyor belt includes: Obtaining a temperature rise threshold value set for the conveyor belt; Determine the temperature of the area represented by each of the thermal imaging values; In the case where the temperature of at least one of the regions is greater than the temperature rise threshold, it is determined that the conveyor belt is in an abnormally heated state.

3. The method according to claim 1, characterized in that The vibration information includes a plurality of vibration signals of the conveyor belt within a preset time period; and the vibration state analysis of the conveyor belt based on the vibration information to determine the vibration state of the conveyor belt includes: Performing power spectrum analysis on the vibration information to determine frequency spectrum information corresponding to the vibration information; Performing time-frequency domain analysis on the vibration information to determine time-frequency distribution information corresponding to the vibration information; The vibration state of the conveyor belt is determined by combining the frequency spectrum information and the time-frequency distribution information.

4. The method according to claim 3, characterized in that The combining the frequency spectrum information and the time-frequency distribution information to determine the vibration state of the conveyor belt includes: Get spectrum threshold and frequency change threshold; Analyzing the power value of each frequency in the spectrum information based on the spectrum threshold to determine the spectrum state of the spectrum information; Analyzing the frequency change rate in the time-frequency distribution information based on the frequency change threshold to determine the time-frequency distribution state of the time-frequency distribution information; When at least one of the spectrum state or the time-frequency distribution state is in an abnormal state, it is determined that the conveyor belt is in an abnormal vibration state.

5. The method according to claim 1, characterized in that The method further comprises: When the working state of the conveyor belt is abnormal, determining the abnormal level of the conveyor belt; Determine a feedback instruction that matches the abnormal level; the feedback instruction is used to instruct the information feedback device to output a corresponding feedback signal.

6. A belt conveyor equipment monitoring system, characterized in that: The system includes an infrared thermal imaging device, a vibration measuring optical fiber, and a control device; The infrared thermal imaging device is arranged on the belt conveyor device, and is used to perform infrared detection on the conveyor belt in the belt conveyor device to obtain thermal imaging information of the conveyor belt; The vibration measuring optical fiber is attached to the conveyor belt and is used to measure the vibration information of the conveyor belt; The control device is used to implement the method according to any one of claims 1 to 5.

7. A belt conveyor equipment monitoring device, characterized in that: The device comprises: An information acquisition module, used to acquire thermal imaging information and vibration information collected from a conveyor belt in the belt conveyor device during operation of the belt conveyor device; A heating state determination module, used for analyzing the heating state of the conveyor belt based on the thermal imaging information to determine the heating state of the conveyor belt; A vibration state determination module, used for performing a vibration state analysis on the conveyor belt based on the vibration information to determine the vibration state of the conveyor belt; The working state determination module is used to determine the working state of the conveyor belt in combination with the heating state and the vibration state.

8. A computer device comprising a memory and a processor, wherein the memory stores a computer program, wherein: When the processor executes the computer program, the steps of the method according to any one of claims 1 to 6 are implemented.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 6 are implemented.

10. A computer program product, comprising a computer program, characterized in that When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 6 are implemented.

Images