Control method and equipment of conveyor belt detection system and storage medium

Abstract

The invention discloses a control method and device of a conveyor belt detection system and a storage medium, and relates to the technical field of conveyor belt detection.The method comprises the steps that the real-time distance, measured by an eddy current sensor, between a conveyor belt component and a probe of the conveyor belt component is obtained, and the transmission speed corresponding to a conveyor belt is determined according to the eddy current sensor, the real-time distance changes along with the operation of the conveyor belt, then the rotating speed frequency of the conveyor belt component is determined according to the real-time distance and the transmission speed, and finally the current state corresponding to the conveyor belt component is determined according to the rotating speed frequency. According to the method, the conveyor belt component is detected in real time through the eddy current sensor, the rotating speed frequency is determined through the detected real-time distance and the transmission rate, and the state of the conveyor belt component is judged according to the rotating speed frequency, so that the detection efficiency of the conveyor belt is improved.

Description

Technical Field

[0001] The present application relates to the field of conveyor belt detection technology, and in particular to a control method, device and storage medium of a conveyor belt detection system. Background Art

[0002] At present, the safety inspection of conveyor belts is carried out by staff members who regularly check the various parts on the conveyor belts and repair or replace the faulty parts to ensure the normal operation of the conveyor belts. However, the above method requires staff members to inspect the conveyor belts at regular intervals, which consumes a lot of manpower and time in the actual process, resulting in low inspection efficiency of the conveyor belts.

[0003] The above contents are only used to assist in understanding the technical solution of the present application and do not constitute an admission that the above contents are prior art. Summary of the invention

[0004] The present application provides a control method, device and storage medium for a conveyor belt detection system, aiming to solve the problem of low detection efficiency of conveyor belts in related solutions.

[0005] To achieve the above-mentioned purpose, the present application provides a control method of a conveyor belt detection system, and the control method of the conveyor belt detection system comprises the following steps:

[0006] Obtaining a real-time distance between a conveyor belt component and its own probe measured by an eddy current sensor, and determining a transmission speed corresponding to the conveyor belt according to the eddy current sensor, wherein the real-time distance changes with the operation of the conveyor belt;

[0007] Determining the rotational speed frequency of the conveyor belt component according to the real-time distance and the transmission speed;

[0008] The current state of the conveyor belt component is determined according to the rotational speed frequency.

[0009] In one embodiment, the step of determining the current state of the conveyor belt component according to the rotational speed frequency comprises:

[0010] When the rotation speed frequency is less than a preset threshold, determining that the current state of the conveyor belt component is a deviation state;

[0011] and / or, identifying a change in the rotational speed frequency at at least one moment based on a preset model;

[0012] When the change is disorderly, it is determined that the conveyor belt component is in a damaged state;

[0013] The alarm prompt information corresponding to the offset state and / or the damage state is fed back to the system platform.

[0014] In one embodiment, the step of obtaining the real-time distance between the conveyor belt component and its own probe measured by the eddy current sensor, and determining the transmission speed corresponding to the conveyor belt according to the eddy current sensor includes:

[0015] Acquire the frequency amplitude of the head coil of the eddy current sensor and parameter information of the conveyor belt component;

[0016] Solving a preset formula according to the parameter information and the frequency amplitude of the head coil to obtain the real-time distance between the conveyor belt component and the self probe;

[0017] Acquiring a sampling frequency of the eddy current sensor;

[0018] Performing a fast Fourier transform on the time domain signal acquired by the eddy current sensor based on the sampling frequency to obtain a corresponding frequency domain signal;

[0019] Determining a frequency component corresponding to the rotation speed in the frequency domain signal;

[0020] The transmission speed corresponding to the conveyor belt is calculated based on the frequency component and the roller circumference of the conveyor belt.

[0021] In one embodiment, after the step of obtaining the real-time distance between the conveyor belt component and the probe thereof measured by the eddy current sensor, the method further comprises:

[0022] Acquire a pre-stored initial distance, wherein the initial distance is an initial distance between the self-probe and the conveyor belt component;

[0023] Acquire a target distance between the conveyor belt component and the self probe measured by the eddy current sensor at a target time;

[0024] When the initial distance is greater than the target distance, it is determined that the conveyor belt component is in a worn state, and corresponding prompt information is fed back to the system platform.

[0025] In one embodiment, the step of determining the rotational speed frequency of the conveyor belt component according to the real-time distance and the transmission speed comprises:

[0026] Determining a maximum distance and a minimum distance in the real-time distance, and determining a rotation speed amplitude according to the maximum distance and the minimum distance;

[0027] The rotation speed frequency is obtained according to the product of the distance amplitude and the transmission speed.

[0028] In one embodiment, after the step of determining the current state of the conveyor belt component according to the rotational speed frequency, the method further comprises:

[0029] When it is detected that the conveyor belt component is in an abnormal state, the rotational speed frequency and the real-time distance are analyzed based on a classification model to determine identification information corresponding to the conveyor belt component in the abnormal state, wherein the abnormal state includes a damaged state and a deflected state;

[0030] According to the identification information, obtaining corresponding replacement parts and associated inventory information;

[0031] A maintenance plan is generated based on the inventory information corresponding to the replacement parts and the processing plan information.

[0032] In one embodiment, the method further includes:

[0033] Acquire frequency spectrum information collected by at least three eddy current sensors, and record real-time frequency spectrum change information of each of the eddy current sensors;

[0034] Determining abnormal spectrum information from each of the real-time spectrum change information;

[0035] Determine a corresponding target eddy current sensor according to the abnormal spectrum information, and take a target conveyor belt component associated with the target eddy current sensor as a faulty component;

[0036] The identification information corresponding to the faulty component is fed back to the system platform.

[0037] In one embodiment, after the step of determining the corresponding target eddy current sensor according to the abnormal spectrum information and taking the target conveyor belt component associated with the target eddy current sensor as the faulty component, the method further includes:

[0038] Acquire target frequency spectrum information collected by the target eddy current sensor;

[0039] Determine the corresponding zero-crossing rate and time domain information according to the target spectrum information;

[0040] When the zero-crossing rate is greater than and / or less than a normal value, the faulty component is determined to be a rounding fault;

[0041] Otherwise, determining a corresponding maximum value difference according to the time domain information, wherein the maximum value difference is a difference between a maximum value and a minimum value in the time domain information;

[0042] If the maximum difference is greater than a preset range, it is determined that the faulty component is belt slippage.

[0043] In addition, to achieve the above-mentioned purpose, the present application also provides a control device for a conveyor belt detection system, the control device for the conveyor belt detection system comprising: a memory, a processor, and a computer program stored in the memory and executable on the processor, the computer program being configured to implement the steps of the control method for the conveyor belt detection system as described above.

[0044] In addition, to achieve the above-mentioned purpose, the present application also provides a storage medium, which is a computer-readable storage medium, and a computer program is stored on the computer-readable storage medium. When the computer program is executed by the processor, the steps of the control method of the conveyor belt detection system as described above are implemented.

[0045] The present application provides a control method for a conveyor belt detection system, a control device for a conveyor belt detection system, and a storage medium. The present application obtains the real-time distance between a conveyor belt component and its own probe measured by an eddy current sensor, and determines the transmission speed corresponding to the conveyor belt according to the eddy current sensor, wherein the real-time distance changes with the operation of the conveyor belt, and then determines the rotational speed frequency of the conveyor belt component according to the real-time distance and the transmission speed, and finally determines the current state corresponding to the conveyor belt component according to the rotational speed frequency. The above method detects the conveyor belt component in real time through an eddy current sensor, determines the rotational speed frequency through the detected real-time distance and the transmission rate, and judges the state of the conveyor belt component according to the rotational speed frequency, thereby improving the detection efficiency of the conveyor belt. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0047] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0048] Figure 1 A schematic flow chart of a first embodiment of a control method for a conveyor belt detection system of the present application;

[0049] Figure 2 A schematic flow chart of a second embodiment of a control method for a conveyor belt detection system of the present application;

[0050] Figure 3 A schematic flow chart of a third embodiment of a control method for a conveyor belt detection system of the present application;

[0051] Figure 4This is a flow chart of a fourth embodiment of a control method for a conveyor belt detection system of the present application;

[0052] Figure 5 This is a schematic diagram of the architecture of the hardware operating environment of the control device of the conveyor belt detection system involved in the embodiment of the present application.

[0053] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0054] 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.

[0055] In order to better understand the above technical solution, exemplary embodiments of the present application will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present application are shown in the accompanying drawings, it should be understood that the present application can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present application and to fully convey the scope of the present application to those skilled in the art.

[0056] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0057] The main solution of the present application is: to obtain the real-time distance between the conveyor belt component and its own probe measured by the eddy current sensor, and to determine the corresponding transmission speed of the conveyor belt based on the eddy current sensor, wherein the real-time distance changes with the operation of the conveyor belt; to determine the rotational speed frequency of the conveyor belt component based on the real-time distance and the transmission speed; and to determine the current state corresponding to the conveyor belt component based on the rotational speed frequency.

[0058] At present, the safety inspection of conveyor belts is carried out by staff members who regularly check the various parts on the conveyor belts and repair or replace the faulty parts to ensure the normal operation of the conveyor belts. However, the above method requires staff members to inspect the conveyor belts at regular intervals, which consumes a lot of manpower and time in the actual process, resulting in low inspection efficiency of the conveyor belts.

[0059] The present application obtains the real-time distance between the conveyor belt component and its own probe measured by the eddy current sensor, and determines the transmission speed corresponding to the conveyor belt according to the eddy current sensor, wherein the real-time distance changes with the operation of the conveyor belt, and then determines the rotational speed frequency of the conveyor belt component according to the real-time distance and the transmission speed, and finally determines the current state corresponding to the conveyor belt component according to the rotational speed frequency. The above method detects the conveyor belt component in real time through the eddy current sensor, determines the rotational speed frequency through the detected real-time distance and the transmission rate, and judges the state of the conveyor belt component according to the rotational speed frequency, thereby improving the detection efficiency of the conveyor belt.

[0060] It should be noted that the execution subject of this embodiment can be a conveyor belt detection system, or a computing service device with data processing, network communication and program running functions, such as a tablet computer, a personal computer, a mobile phone, etc., or a control device of a conveyor belt detection system capable of realizing the above functions, etc., and this embodiment does not specifically limit this. The following takes the conveyor belt detection system as an example of the execution subject to illustrate this embodiment and the following embodiments.

[0061] Embodiment 1

[0062] Based on this, the present application embodiment provides a control method for a conveyor belt detection system, referring to Figure 1 , Figure 1 This is a flow chart of a first embodiment of a control method for a conveyor belt detection system of the present application. The control method for a conveyor belt detection system includes steps S10 to S40:

[0063] Step S10: obtaining the real-time distance between the conveyor belt component and its own probe measured by the eddy current sensor, and determining the corresponding transmission speed of the conveyor belt according to the eddy current sensor, wherein the real-time distance changes with the operation of the conveyor belt.

[0064] In this embodiment, the processing action is performed by the conveyor belt detection system, and the conveyor belt detection system is connected to the eddy current sensor. The eddy current sensor can statically and dynamically measure the distance between the measured metal conductor and the probe surface in a non-contact, high linearity and high resolution manner, and is a non-contact linear measurement tool. It should be noted that the real-time distance between the conveyor belt component and its own probe measured by the eddy current sensor is the distance at a certain moment. In the actual process, the real-time distance changes with the operation of the conveyor belt. The self-probe is a component of the eddy current sensor. The probe is the core component of the eddy current sensor, which is responsible for non-contact measurement with the object being measured. It is usually composed of a flat coil, which is fixed on a specific frame. The conveyor belt component is a metal component in the conveyor belt, which can be a roller or a bearing, which is not limited here.

[0065] Specifically, the eddy current sensor is installed in the conveyor belt, and the position of the eddy current sensor probe is aligned with the sensor component to be measured. After the eddy current sensor is deployed, the eddy current sensor is turned on to measure the distance between the conveyor belt component and its own probe in real time, and the real-time distance is fed back to the conveyor belt detection system.

[0066] Optionally, in this embodiment, the step of obtaining the real-time distance between the conveyor belt component and its own probe measured by the eddy current sensor, and determining the transmission speed corresponding to the conveyor belt according to the eddy current sensor includes:

[0067] Acquire the frequency amplitude of the head coil of the eddy current sensor and the parameter information of the conveyor belt component; solve a preset formula according to the parameter information and the frequency amplitude of the head coil to obtain the real-time distance between the conveyor belt component and the self probe; acquire the sampling frequency of the eddy current sensor; perform fast Fourier transform on the time domain signal acquired by the eddy current sensor based on the sampling frequency to obtain the corresponding frequency domain signal; determine the frequency component corresponding to the rotation speed in the frequency domain signal; calculate the transmission speed corresponding to the conveyor belt according to the frequency component and the roller circumference of the conveyor belt.

[0068] Specifically, after the eddy current sensor is turned on, the probe itself generates a high-frequency magnetic field. When the conveyor belt component is in the magnetic field, eddy currents are induced on the surface of the probe itself. The alternating magnetic field generated by the eddy current reacts to the probe coil, causing the coil's self-inductance or impedance to change. The preamplifier converts the change in coil impedance into an electrical signal output, which is proportional to the distance between the conveyor belt component and the probe, so that the distance between the conveyor belt component and the probe can be calculated based on the change in the electrical signal. In the preamplifier of the eddy current sensor, the high-frequency oscillating current flows into the probe coil through an extension cable, generating an alternating magnetic field in the coil at the probe head. When the metal body to be measured approaches this magnetic field, an induced current is generated on the metal surface. At the same time, the eddy current field also generates an alternating magnetic field in the opposite direction of the head coil. Due to its reaction, the amplitude and phase of the high-frequency current of the head coil are changed. This change is related to parameters such as the magnetic permeability and electrical conductivity of the metal body, the geometric shape and geometric dimensions of the coil, the current frequency, and the distance from the head coil to the surface of the metal conductor.

[0069] It is usually assumed that the material of the metal conductor is uniform and its performance is linear and isotropic. The physical properties of the coil and the metal conductor, that is, the parameter information of the conveyor belt component, can be described by the conductivity б, magnetic permeability ξ, and size factor τ of the metal conductor, and the distance D between the head body coil and the surface of the metal conductor, the current intensity I, and the frequency ω parameters. The characteristic impedance of the coil can be represented by the function Z=F(τ, ξ, б, D, I, ω). If the parameters τ, ξ, б, I, ω are controlled to remain unchanged within a certain range, the characteristic impedance Z of the coil becomes a single-valued function of the distance D. Although the entire function is nonlinear and its function characteristic is an "S" curve, a section that is approximately linear can be selected. Finally, through the processing of the preamplifier electronic circuit, the change of the coil impedance Z, that is, the change of the distance D between the head body coil and the metal conductor, is converted into a change in voltage or current. The size of the output signal varies with the distance between the probe and the surface of the measured body. The eddy current sensor measures the distance between the metal object and the probe based on the above principle, and then obtains the real-time distance between the conveyor belt component and the probe itself.

[0070] Optionally, after obtaining the real-time distance between the conveyor belt component and its own probe, the transmission speed of the conveyor belt during operation is calculated using various data collected by the eddy current sensor.

[0071] Specifically, the eddy current collects data of the conveyor belt components corresponding to the conveyor belt at the sampling frequency. Here, in order to calculate the transmission speed, the current or voltage change signal related to the rotation of the roller is collected. In order to recover the original signal from the digital signal without losing information, the sampling frequency must be greater than or equal to twice the highest frequency of the signal, that is, the relationship between the sampling frequency (Fs) and the signal frequency (F) is: the sampling frequency must be at least twice the highest frequency of the signal (Fs>=2F), so as to ensure that the signal will not be aliased after digitization, thereby accurately restoring the original signal. After the eddy current sensor collects the time domain signal based on the sampling frequency, the number of time domain signals is the number corresponding to the sampling frequency. The sampling frequency time domain data points are input into the FFT (Fast Fourier Transform) algorithm. FFT converts these time domain signals into frequency domain signals, so that different frequency components in the signal can be analyzed. The result of FFT is a set of complex numbers, each of which corresponds to a specific frequency component, and its modulus value represents the amplitude of the frequency component, while the phase angle represents the phase of the frequency component.

[0072] Find the frequency component corresponding to the roller speed from the FFT result. This frequency component is somewhere between 0 and 128 Hz, depending on the actual speed of the roller. Then multiply the frequency component by the duration of the speed unit to get the speed, and calculate the transmission speed by multiplying the speed by the roller circumference.

[0073] For example, suppose there is a roller with a diameter of 0.5 meters. Through FFT analysis, it is found that the frequency component corresponding to the roller speed is 50Hz. The actual speed RPM is calculated as 50*60=3000RPM, the circumference of the roller is calculated as C=π*0.5≈1.57m, and the linear speed V is calculated as 3000*1.57 / 60≈78.5m / s. The linear speed is the transmission speed of the conveyor belt.

[0074] Step S20: Determine the rotational speed frequency of the conveyor belt component according to the real-time distance and the transmission speed.

[0075] In this embodiment, the rotation speed frequency is used to describe the frequency at which the conveyor belt component rotates when the conveyor belt is running.

[0076] Before calculating the rotational speed frequency of the conveyor belt component, it is necessary to ensure that the distance data obtained from the eddy current sensor and the conveyor belt speed data measured by the encoder are synchronized. Specifically, a common time reference can be used, that is, after the real-time distance is measured at a certain moment, the transmission speed of the conveyor belt at this moment can be calculated through the time domain signal collected at that moment. Since the conveyor belt is moving, the directly measured distance will contain changes caused by the movement of the conveyor belt. In order to extract the true rotational speed information, the raw distance data is converted into a relative displacement relative to the position when the conveyor belt is stationary. Specifically, the real-time distance can be determined by subtracting the corresponding expected position from each distance reading.

[0077] Optionally, in this embodiment, the step of determining the rotational speed frequency of the conveyor belt component according to the real-time distance and the transmission speed includes:

[0078] The maximum distance and the minimum distance are determined in the real-time distance, and the rotation speed amplitude is determined according to the maximum distance and the minimum distance; the rotation speed frequency is obtained according to the product of the rotation speed amplitude and the transmission speed.

[0079] Specifically, the real-time distance changes regularly, and by analyzing the constantly changing real-time distance, the maximum distance and the minimum distance, i.e., the peak value, are determined in the real-time distance, that is, the rotation speed amplitude is determined according to the maximum distance and the minimum distance, and the peak value represents the maximum deviation point of the rotation speed. Then, the product of the rotation speed amplitude and the transmission speed of the conveyor belt is used as the rotation speed frequency.

[0080] In addition, the time interval between two adjacent peaks of the same type can be measured, which is a speed cycle. For more accurate results, the average value of multiple cycles can be calculated. The speed frequency can be calculated based on the functional relationship between the speed cycle and the speed frequency. The speed frequency refers to the number of complete speeds that occur per unit time.

[0081] Step S30: determining the current state of the conveyor belt component according to the rotational speed frequency.

[0082] In this embodiment, the current state is used to describe the state of the conveyor belt component at the rotational speed frequency. The current state includes an offset state and a damage state, and each state is associated with a corresponding rotational speed frequency interval. The rotational speed frequency is obtained by calculation, and the rotational speed frequency interval is compared to determine the state of the conveyor belt component. Finally, the conveyor belt detection system feeds back the alarm prompt information corresponding to the current state to the system platform.

[0083] Optionally, in this embodiment, the step according to the real-time distance and the transmission speed includes:

[0084] When the rotational speed frequency is less than a preset threshold value, the current state of the conveyor belt component is determined to be an offset state; and / or, based on a preset model, the change of the rotational speed frequency at at least one moment is identified; when the change is disordered, the conveyor belt component is determined to be in a damaged state; and the alarm prompt information corresponding to the offset state and / or the damage state is fed back to the system platform.

[0085] Specifically, a pre-stored preset threshold is obtained, and the rotational speed frequency is compared with the preset threshold. When the rotational speed frequency is less than the preset threshold, it means that the rotational speed frequency of the conveyor belt component exceeds the normal frequency. At this time, the current state of the conveyor belt component is determined to be an offset state, and the offset state indicates that the conveyor belt component deviates from the original position, resulting in its rotational speed frequency being lower than the preset threshold. The preset model is loaded, and the real-time collected rotational speed frequency is compared and analyzed with the preset model. The change of the rotational speed frequency is identified to determine whether it conforms to the law in the preset model. When the change of the rotational speed frequency is disordered, that is, it does not conform to the law in the preset model, it is determined that the conveyor belt component is in a damaged state, and the damaged state indicates that the conveyor belt component is damaged, resulting in irregular rotational speed frequency. A threshold or alarm mechanism can be set, and when the change of the rotational speed frequency exceeds a certain range, an alarm signal is automatically issued. Finally, according to the current state of the conveyor belt component, the corresponding alarm prompt information is fed back to the system platform, wherein the alarm prompt information includes conveyor belt component offset prompt information and conveyor belt component damage prompt information.

[0086] In addition, the preset model is a model of rotation speed and frequency variation established according to the normal working state of the conveyor belt component. The model should be able to reflect the rotation speed and frequency characteristics of the conveyor belt component under normal conditions.

[0087] In the technical solution provided in this embodiment, the real-time distance between the conveyor belt component and its own probe measured by the eddy current sensor is obtained, wherein the real-time distance changes with the operation of the conveyor belt, and then the transmission speed corresponding to the conveyor belt is determined according to the eddy current sensor, and then the rotation speed frequency of the conveyor belt component is determined according to the real-time distance and the transmission speed, and finally the current state corresponding to the conveyor belt component is determined according to the rotation speed frequency, and the alarm prompt information corresponding to the current state is fed back to the system platform. This embodiment detects the conveyor belt component in real time through the eddy current sensor, determines the rotation speed frequency through the detected real-time distance and the transmission rate, and judges the state of the conveyor belt component according to the rotation speed frequency, thereby improving the detection efficiency of the conveyor belt.

[0088] Embodiment 2

[0089] Based on any embodiment, refer to Figure 2 , Figure 2 This is a flow chart of the second embodiment of the control method of the conveyor belt detection system of the present application. After step S10, steps S40 to S60 are also included:

[0090] Step S40: obtaining a pre-stored initial distance, wherein the initial distance is an initial distance between the self-probe and the conveyor belt component.

[0091] Step S50: obtaining a target distance between the conveyor belt component and the self probe measured by the eddy current sensor at a target time.

[0092] In this embodiment, the pre-stored initial distance is the distance between the self-probe and the conveyor belt component measured when the conveyor belt and the eddy current sensor are installed, which is stored in the database of the conveyor belt detection system and is associated with the identification of the conveyor belt component. The target time can be the moment when the conveyor belt stops, or it can be the moment when the relative posture of the conveyor belt component and the probe matches the initial relative posture when the conveyor belt runs to a certain moment. At this time, the target distance between the conveyor belt component and the self-probe measured by the eddy current sensor.

[0093] Optionally, when the relative posture of the conveyor belt component and the probe matches the initial relative posture, the posture image of the conveyor belt component and the eddy current sensor probe can be collected in real time by an image sensor, and the acquisition time of each posture image is recorded. The pre-stored initial posture image is obtained, and the initial posture image records the posture of the conveyor belt component and the probe at the beginning. By comparing the posture image with the initial posture image, when the two match, the matching target posture image and the associated acquisition time are determined. Then the distance measured by the eddy current sensor corresponding to the acquisition time is obtained, which is the target distance.

[0094] Step S60: When the initial distance is greater than the target distance, it is determined that the conveyor belt component is in a worn state, and corresponding prompt information is fed back to the system platform.

[0095] In this embodiment, when the target distance is greater than the initial distance, it means that the distance between the conveyor belt component and the probe has increased. At this time, it means that the conveyor belt component is worn, that is, the conveyor belt component is in a worn state, and then the prompt information corresponding to the worn state is fed back to the system platform.

[0096] In the technical solution provided in this embodiment, a pre-stored initial distance is obtained, wherein the initial distance is the initial distance between the self-probe and the conveyor belt component, and then the target distance between the conveyor belt component and the self-probe measured by the eddy current sensor at the target time is obtained, and then according to the target distance and the initial distance, whether the conveyor belt component is in a worn state is judged, and finally when the conveyor belt component is in a worn state, corresponding prompt information is fed back to the system platform. This embodiment compares the initial distance and the target distance to judge whether the conveyor belt component is in a worn state, so as to improve the accuracy of conveyor belt detection.

[0097] Embodiment 3

[0098] Based on any embodiment, refer to Figure 3 , Figure 3 This is a flow chart of the third embodiment of the control method of the conveyor belt detection system of the present application. After step S30, steps S70 to S90 are also included:

[0099] Step S70: When it is detected that the conveyor belt component is in an abnormal state, the rotational speed frequency and the real-time distance are analyzed based on a classification model to determine identification information corresponding to the conveyor belt component in the abnormal state, wherein the abnormal state includes a damaged state and an offset state.

[0100] Step S80: Acquire corresponding replacement parts and associated inventory information according to the identification information.

[0101] Step S90: Generate a maintenance plan based on the inventory information corresponding to the replacement parts and the processing plan information.

[0102] In this embodiment, the abnormal state includes a damaged state and a shifted state. When the conveyor belt component is judged to be in an abnormal state based on the solution in the first embodiment, a pre-stored classification model is loaded, and the classification model is used to judge the identification information of the conveyor belt component in the abnormal state, that is, to judge which component the conveyor belt component is. The identification information may include the number and specification of the conveyor belt component.

[0103] Specifically, the rotational speed frequency and the real-time distance are input into a classification model, and the classification model is analyzed based on the input rotational speed frequency and the real-time distance, and the classification model is trained and generated based on various data of historical damaged components. Therefore, the classification model can determine which component the conveyor belt component belongs to based on the rotational speed frequency and the real-time distance, wherein the conveyor belt component is correspondingly associated with identification information, so that the identification information of the conveyor belt component can be determined.

[0104] After determining the identification information, query the corresponding replacement parts information such as model, specification, quantity, etc. according to the identification information of the conveyor belt component. Then access the inventory management system to obtain the inventory quantity, storage location and other information of the replacement parts. It is also necessary to obtain the current processing plan information, including production tasks, production progress, priority, etc. According to the inventory information of the replacement parts, the processing plan information and the abnormal status of the conveyor belt components, formulate a maintenance plan, including maintenance time, maintenance personnel, required tools and equipment, etc., so as to generate a maintenance plan according to the maintenance plan, and feedback the maintenance plan to the staff's system platform.

[0105] Optionally, based on deep learning, the degree of damage of the conveyor belt component can be determined according to the rotational speed frequency and real-time distance of the conveyor belt component, and then the appropriate replacement time can be determined according to the degree of damage, that is, whether the conveyor belt component needs to be replaced according to the degree of damage, and the time point for replacing the conveyor belt component can be determined. Therefore, a trigger point can be set at the time point, and when the trigger point arrives, a replacement or maintenance prompt is automatically fed back to the system platform of the staff.

[0106] In the technical solution provided by this embodiment, when the conveyor belt component is detected to be in an abnormal state, the rotational speed frequency and the real-time distance are analyzed based on the classification model to determine the identification information of the conveyor belt component in the abnormal state, wherein the abnormal state includes a damage state and an offset state, and then the corresponding replacement parts and the associated inventory information are obtained according to the identification information, and finally a maintenance plan is generated according to the inventory information corresponding to the replacement parts and the processing plan information. This embodiment analyzes the rotational speed frequency and the real-time distance through a classification model, so that a corresponding maintenance plan can be generated according to the identification information determined after the analysis, thereby improving the maintenance efficiency of the conveyor belt component.

[0107] Embodiment 4

[0108] Based on any embodiment, refer to Figure 4 , Figure 4 This is a flow chart of a fourth embodiment of a control method for a conveyor belt detection system of the present application. The control method for a conveyor belt detection system further includes steps S100 to S130:

[0109] Step S100: Acquire frequency spectrum information collected by at least three eddy current sensors, and record real-time frequency spectrum change information of each of the eddy current sensors.

[0110] Step S110: determining abnormal spectrum information from each of the real-time spectrum change information.

[0111] Step S120: determining a corresponding target eddy current sensor according to the abnormal frequency spectrum information, and taking a target conveyor belt component associated with the target eddy current sensor as a faulty component.

[0112] Step S130: Feedback identification information corresponding to the faulty component to the system platform.

[0113] In this embodiment, there are multiple conveyor belt components in a conveyor belt, and there are at least three conveyor belt components of the same type. Each conveyor belt component of the same type is provided with an eddy current sensor for detection, so at least three eddy current sensors are provided around the conveyor belt. Then the real-time spectrum change information collected by each eddy current sensor is recorded and associated with the corresponding conveyor belt component for storage. The real-time spectrum change information collected by each eddy current sensor is input into the analysis model, and the real-time spectrum change information is analyzed by the analysis model to find out the abnormal spectrum information in an abnormal situation, wherein the abnormal situation here refers to the presence of a target spectrum change information different from other spectrum information in these real-time spectrum change information. Thus, the target spectrum change information is used as the abnormal spectrum information. According to the abnormal spectrum information, the corresponding target eddy current sensor is determined, and the target conveyor belt component associated with the target eddy current sensor is used as the faulty component. Finally, the target conveyor belt component associated with the target eddy current sensor is used as the faulty component, and the identification information corresponding to the faulty component is fed back to the system platform so that the staff can repair the corresponding conveyor belt component.

[0114] Specifically, the real-time spectrum changes of each CCG sensor are recorded, and the spectrum trends between adjacent CCG sensors are compared to see if they are consistent. If the spectrum change trend of a CCG sensor is significantly different from that of other sensors, there may be a local fault at that location, such as roller imbalance or bearing failure.

[0115] Optionally, in this embodiment, after the step of determining the corresponding target eddy current sensor according to the abnormal spectrum information and taking the target conveyor belt component associated with the target eddy current sensor as the faulty component, the step further includes:

[0116] Obtain target spectrum information collected by the target eddy current sensor; determine the corresponding zero-crossing rate and time domain information based on the target spectrum information; when the zero-crossing rate is greater than and / or less than a normal value, determine that the faulty component is a rounding fault; otherwise, determine the corresponding maximum value difference based on the time domain information, wherein the maximum value difference is the difference between the maximum value and the minimum value in the time domain information; if the maximum value difference is greater than a preset range, determine that the faulty component is a belt slip.

[0117] Specifically, the zero-crossing rate refers to the number of times a signal crosses zero in one cycle. For a normally operating conveyor belt, the zero-crossing rate should be relatively stable; however, in a fault state, the zero-crossing rate may increase or decrease significantly. By monitoring the changes in the zero-crossing rate, abnormal speeds or shocks in the system, such as rounding faults or bearing damage, can be detected in a timely manner. The maximum and minimum value difference of the time domain signal reflects the amplitude range of the signal. Under normal circumstances, this difference should remain within a certain range; however, in a fault state, the amplitude may suddenly increase or decrease. By monitoring the changes in the maximum and minimum value difference, severe speeds or shocks in the conveyor belt, such as belt slippage or roller imbalance, can be detected.

[0118] In the technical solution provided in this embodiment, by acquiring the spectrum information collected by at least three eddy current sensors, and recording the real-time spectrum change information of each of the eddy current sensors, and determining the abnormal spectrum information from each of the real-time spectrum change information, then determining the corresponding target eddy current sensor according to the abnormal spectrum information, and taking the target conveyor belt component associated with the target eddy current sensor as the faulty component, and finally feeding back the identification information corresponding to the faulty component to the system platform. This embodiment scheme analyzes the spectrum information collected by at least three eddy current sensors to obtain the abnormal spectrum information, thereby determining the corresponding target conveyor belt component in the abnormal state, so as to improve the efficiency of conveyor belt detection.

[0119] Since the system introduced in the embodiment of the present application is a system used to implement the method of the embodiment of the present application, based on the method introduced in the embodiment of the present application, the person skilled in the art can understand the specific structure and deformation of the system, so it is not repeated here. All systems used in the method of the embodiment of the present application belong to the scope of protection of this application.

[0120] The present application provides a control device for a conveyor belt detection system, the control device for the conveyor belt detection system comprising: at least one processor; and a memory communicatively connected to the at least one processor; wherein the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor so that the at least one processor can execute the control method for the conveyor belt detection system in the above-mentioned embodiment one.

[0121] Reference below Figure 5, which shows a schematic diagram of the structure of a control device suitable for implementing a conveyor belt detection system in an embodiment of the present application. The control device of the conveyor belt detection system in an embodiment of the present application may include, but is not limited to, mobile terminals such as mobile phones, laptop computers, digital broadcast receivers, PDAs (Personal Digital Assistants), PADs (Portable Application Descriptions), PMPs (Portable Media Players), vehicle-mounted terminals (such as vehicle-mounted navigation terminals), etc., and fixed terminals such as digital TVs, desktop computers, etc. Figure 5 The control device of the conveyor belt detection system shown is merely an example and should not bring any limitation to the functions and scope of use of the embodiments of the present application.

[0122] like Figure 5 As shown, the control device of the conveyor belt detection system may include a processing device 1001 (e.g., a core processor, a graphics processor, etc.), which can perform various appropriate actions and processes according to a program stored in a read-only memory (ROM) 1002 or a program loaded from a storage device 1003 to a random access memory (RAM) 1004. Various programs and data required for the operation of the control device of the conveyor belt detection system are also stored in the RAM 1004. The processing device 1001, the read-only memory 1002, and the random access memory 1004 are connected to each other via a bus 1005. An input / output (I / O) interface 1006 is also connected to the bus. Typically, the following systems can be connected to the I / O interface 1006: input devices 1007 including, for example, a touch screen, a touchpad, a keyboard, a mouse, an image sensor, a microphone, an accelerometer, a gyroscope, etc.; output devices 1008 including, for example, a liquid crystal display (LCD), a speaker, a tachometer, etc.; storage devices 1003 including, for example, a magnetic tape, a hard disk, etc.; and communication devices 1009. The communication device 1009 can allow the control device of the conveyor belt detection system to communicate with other devices wirelessly or by wire to exchange data. Although the control device of the conveyor belt detection system with various systems is shown in the figure, it should be understood that it is not required to implement or have all the systems shown. More or fewer systems may be implemented or have alternatively.

[0123] In particular, according to the embodiments disclosed in the present application, the process described above with reference to the flowchart can be implemented as a computer software program. For example, the embodiments disclosed in the present application include a computer program product, which includes a computer program carried on a computer-readable medium, and the computer program includes a program code for executing the method shown in the flowchart. In such an embodiment, the computer program can be downloaded and installed from a network through a communication device, or installed from a storage device 1003, or installed from a read-only memory 1002. When the computer program is executed by the processing device 1001, the above-mentioned functions defined in the method of the embodiment disclosed in the present application are executed.

[0124] The control device of the conveyor belt detection system provided by the present application adopts the control method of the conveyor belt detection system in the above embodiment, which can solve the technical problem of low detection efficiency of the conveyor belt in the related scheme. Compared with the prior art, the beneficial effects of the control device of the conveyor belt detection system provided by the present application are the same as the beneficial effects of the control method of the conveyor belt detection system provided by the above embodiment, and other technical features in the control device of the conveyor belt detection system are the same as the features disclosed in the method of the previous embodiment, which will not be repeated here.

[0125] It should be understood that the various parts disclosed in this application can be implemented by hardware, software, firmware or a combination thereof. In the description of the above embodiments, specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner.

[0126] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

[0127] The present application provides a computer-readable storage medium having computer-readable program instructions (ie, computer programs) stored thereon, and the computer-readable program instructions are used to execute the control method of the conveyor belt detection system in the above-mentioned embodiment.

[0128] The computer-readable storage medium provided in the present application may be, for example, a USB flash drive, but is not limited to electrical, magnetic, optical, electromagnetic, infrared or semiconductor systems, systems or devices, or any combination of the above. More specific examples of computer-readable storage media may include, but are not limited to: an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM, Erasable Programmable Read Only Memory or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM, CD-Read Only Memory), an optical storage device, a magnetic storage device, or any suitable combination of the above. In the present embodiment, the computer-readable storage medium may be any tangible medium containing or storing a program, which may be used by or in combination with an instruction execution system, system or device. The program code contained on the computer-readable storage medium may be transmitted using any appropriate medium, including but not limited to: wires, optical cables, radio frequencies (RF, Radio Frequency), etc., or any suitable combination of the above.

[0129] The computer-readable storage medium may be included in the control device of the conveyor belt detection system; or may exist independently without being assembled into the control device of the conveyor belt detection system.

[0130] The above-mentioned computer-readable storage medium carries one or more programs. When the above-mentioned one or more programs are executed by the control device of the conveyor belt detection system, the control device of the conveyor belt detection system: obtains the real-time distance between the conveyor belt component and its own probe measured by the eddy current sensor, and determines the corresponding transmission speed of the conveyor belt according to the eddy current sensor, wherein the real-time distance changes with the operation of the conveyor belt; determines the rotational speed frequency of the conveyor belt component according to the real-time distance and the transmission speed; and determines the current state corresponding to the conveyor belt component according to the rotational speed frequency.

[0131] Computer program code for performing the operations of the present application may be written in one or more programming languages ​​or a combination thereof, including object-oriented programming languages ​​such as Java, Smalltalk, C++, and conventional procedural programming languages ​​such as "C" or similar programming languages. The program code may be executed entirely on the user's computer, partially on the user's computer, as a separate software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computer (e.g., via the Internet using an Internet service provider).

[0132] The flowcharts and block diagrams in the accompanying drawings illustrate the possible architecture, functions and operations of the systems, methods and computer program products according to various embodiments of the present application. In this regard, each box in the flowchart or block diagram can represent a module, a program segment or a part of a code, and the module, a program segment or a part of the code contains one or more executable instructions for realizing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the box can also occur in a different order from the order marked in the accompanying drawings. For example, two boxes represented in succession can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the block diagram and / or flowchart, and the combination of boxes in the block diagram and / or flowchart can be implemented with a dedicated hardware-based system that performs a specified function or operation, or can be implemented with a combination of dedicated hardware and computer instructions.

[0133] The modules involved in the embodiments described in this application may be implemented by software or hardware, wherein the name of the module does not constitute a limitation on the unit itself in some cases.

[0134] The readable storage medium provided by the present application is a computer-readable storage medium, which stores computer-readable program instructions (i.e., computer programs) for executing the control method of the above-mentioned conveyor belt detection system, and can solve the technical problem of low detection efficiency of the conveyor belt in the related scheme. Compared with the prior art, the beneficial effects of the computer-readable storage medium provided by the present application are the same as the beneficial effects of the control method of the conveyor belt detection system provided by the above-mentioned embodiment, and will not be repeated here.

[0135] An embodiment of the present application provides a computer program product, including a computer program, which, when executed by a processor, implements the steps of the control method of the conveyor belt detection system as described above.

[0136] The computer program product provided by the present application can solve the technical problem that the detection efficiency of the conveyor belt is low in the related solutions. Compared with the prior art, the beneficial effects of the computer program product provided by the embodiment of the present application are the same as the beneficial effects of the control method of the conveyor belt detection system provided by the above embodiment, which will not be repeated here.

[0137] The above are only preferred embodiments of the present application, and are not intended to limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent processing scope of the present application.

Claims

1. A control method for a conveyor belt detection system, characterized in that: The control method of the conveyor belt detection system comprises the following steps: Obtaining a real-time distance between a conveyor belt component and its own probe measured by an eddy current sensor, and determining a transmission speed corresponding to the conveyor belt according to the eddy current sensor, wherein the real-time distance changes with the operation of the conveyor belt; Determining the rotational speed frequency of the conveyor belt component according to the real-time distance and the transmission speed; The current state of the conveyor belt component is determined according to the rotational speed frequency.

2. The method according to claim 1, characterized in that The step of determining the current state of the conveyor belt component according to the rotational speed frequency comprises: When the rotation speed frequency is less than a preset threshold, determining that the current state of the conveyor belt component is a deviation state; and / or, identifying a change in the rotational speed frequency at at least one moment based on a preset model; When the change is disorderly, it is determined that the conveyor belt component is in a damaged state; The alarm prompt information corresponding to the offset state and / or the damage state is fed back to the system platform.

3. The method according to claim 1, characterized in that The steps of obtaining the real-time distance between the conveyor belt component and the probe thereof measured by the eddy current sensor, and determining the transmission speed corresponding to the conveyor belt according to the eddy current sensor include: Acquire the frequency amplitude of the head coil of the eddy current sensor and parameter information of the conveyor belt component; Solving a preset formula according to the parameter information and the frequency amplitude of the head coil to obtain the real-time distance between the conveyor belt component and the self probe; Acquiring a sampling frequency of the eddy current sensor; Performing a fast Fourier transform on the time domain signal acquired by the eddy current sensor based on the sampling frequency to obtain a corresponding frequency domain signal; Determining a frequency component corresponding to the rotation speed in the frequency domain signal; The transmission speed corresponding to the conveyor belt is calculated based on the frequency component and the roller circumference of the conveyor belt.

4. The method according to claim 1, characterized in that After the steps of obtaining the real-time distance between the conveyor belt component and the probe thereof measured by the eddy current sensor, and determining the transmission speed corresponding to the conveyor belt according to the eddy current sensor, the method further includes: Acquire a pre-stored initial distance, wherein the initial distance is an initial distance between the self-probe and the conveyor belt component; Acquire a target distance between the conveyor belt component and the self probe measured by the eddy current sensor at a target time; When the initial distance is greater than the target distance, it is determined that the conveyor belt component is in a worn state, and corresponding prompt information is fed back to the system platform.

5. The method according to claim 1, characterized in that The step of determining the rotational speed frequency of the conveyor belt component according to the real-time distance and the transmission speed comprises: Determining a maximum distance and a minimum distance in the real-time distance, and determining a rotation speed change according to the maximum distance and the minimum distance; The rotation speed frequency is obtained according to the product of the rotation speed change and the transmission speed.

6. The method according to claim 1, characterized in that After the step of determining the current state of the conveyor belt component according to the rotational speed frequency, the method further includes: When it is detected that the conveyor belt component is in an abnormal state, the rotational speed frequency and the real-time distance are analyzed based on a classification model to determine identification information corresponding to the conveyor belt component in the abnormal state, wherein the abnormal state includes a damaged state and a deflected state; According to the identification information, obtaining corresponding replacement parts and associated inventory information; A maintenance plan is generated based on the inventory information corresponding to the replacement parts and the processing plan information.

7. The method according to claim 1, characterized in that The method further comprises: Acquire frequency spectrum information collected by at least three eddy current sensors, and record real-time frequency spectrum change information of each of the eddy current sensors; Determining abnormal spectrum information from each of the real-time spectrum change information; Determine a corresponding target eddy current sensor according to the abnormal spectrum information, and take a target conveyor belt component associated with the target eddy current sensor as a faulty component; The identification information corresponding to the faulty component is fed back to the system platform.

8. The method according to claim 7, characterized in that After the step of determining the corresponding target eddy current sensor according to the abnormal spectrum information and taking the target conveyor belt component associated with the target eddy current sensor as the faulty component, the method further includes: Acquire target frequency spectrum information collected by the target eddy current sensor; Determine the corresponding zero-crossing rate and time domain information according to the target spectrum information; When the zero-crossing rate is greater than and / or less than a normal value, the faulty component is determined to be a rounding fault; Otherwise, determining a corresponding maximum value difference according to the time domain information, wherein the maximum value difference is a difference between a maximum value and a minimum value in the time domain information; If the maximum difference is greater than a preset range, it is determined that the faulty component is belt slippage.

9. A control device for a conveyor belt detection system, characterized in that: The control device of the conveyor belt detection system includes: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the computer program is configured to implement the steps of the control method of the conveyor belt detection system as described in any one of claims 1 to 8.

10. A storage medium, characterized in that: The storage medium is a computer-readable storage medium having a computer program stored thereon. When the computer program is executed by a processor, the steps of the control method of the conveyor belt detection system according to any one of claims 1 to 8 are implemented.

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