Belt conveyor friction resistance measurement system and method

Abstract

The embodiments of the present disclosure provide a belt conveyor friction resistance measurement system and method. The system includes: a piezoelectric device, which is laid on the outer surface of the roller of the belt conveyor, and is used to collect the piezoelectric signal generated under the pressure of the material on the conveyor belt; a visual acquisition device, which is used to collect image information between the conveyor belt and the roller; a speed sensor, which is installed on one side of the conveyor belt, and is used to monitor the speed of the belt conveyor; a computer, which is respectively connected to the piezoelectric device, the visual acquisition device and the speed sensor, and is used to determine the target friction resistance generated by the belt conveyor according to the received piezoelectric signal, image information and speed. In this way, the unit friction resistance of the belt conveyor can be measured in real time to prevent safety hazards caused by excessive unit friction resistance. At the same time, the safety and reliability of the system operation is improved to avoid safety hazards caused by unfavorable friction resistance monitoring.

Description

Technical Field

[0001] The present disclosure relates to the technical field of belt conveyors, and in particular to the technical field of resistance measurement. Background Art

[0002] At present, in the field of material transportation using belt conveyors, friction resistance has become a problem that affects material transportation. Due to the existence of friction, a large amount of system power is consumed, which causes energy waste and has a great impact on the life of the belt conveyor belt. Excessive friction resistance will also cause an increase in local loads. Friction will inevitably generate heat. Overheating will affect the reliability of the entire system. In severe cases, the belt may break, endangering production safety.

[0003] Therefore, it is necessary to design a better detection technology to effectively measure the friction resistance per unit area of ​​the belt conveyor to solve the above problems. Summary of the invention

[0004] The present disclosure provides a belt conveyor friction resistance measurement system, method, device and storage medium.

[0005] According to a first aspect of the present disclosure, a belt conveyor friction resistance measurement system is provided. The system comprises:

[0006] A piezoelectric device, which is laid on the outer surface of the roller of the belt conveyor and is used to collect the piezoelectric signal generated by the pressure of the material on the conveyor belt;

[0007] A visual acquisition device, used for acquiring image information between the conveyor belt and the roller;

[0008] A speed sensor, mounted on one side of the conveyor belt, for monitoring the speed of the belt conveyor;

[0009] A computer is connected to the piezoelectric device, the visual acquisition device and the speed sensor respectively, and is used to determine the target friction resistance generated by the belt conveyor according to the received piezoelectric signal, the image information and the speed.

[0010] According to the above aspects and any possible implementation manner, an implementation manner is further provided, wherein the system further includes:

[0011] an electrical signal transceiver, connected between the piezoelectric device and the computer, for receiving the piezoelectric signal generated by the piezoelectric device and sending it to the computer;

[0012] An image information transceiver is connected between the visual acquisition device and the computer, and is used to receive the image information generated by the visual acquisition device and send it to the computer.

[0013] According to the above aspects and any possible implementation manner, an implementation manner is further provided, wherein the computer is specifically used for:

[0014] Determine a first friction resistance generated by the belt conveyor in a process of conveying the material according to the piezoelectric signal and the image information;

[0015] Determining a second friction resistance generated by the belt conveyor in the process of conveying the material according to the speed;

[0016] The target friction resistance is determined based on the first friction resistance and the second friction resistance.

[0017] According to the above aspects and any possible implementation manner, an implementation manner is further provided, wherein the computer is specifically used for:

[0018] Determine the contact length between the conveyor belt and the roller by using the image information;

[0019] Determining a contact area between the conveyor belt and the roller according to the contact length and the axial distance of the piezoelectric device;

[0020] determining a current pressure according to the piezoelectric signal;

[0021] determining a unit pressure on the piezoelectric device according to the current pressure and the contact area;

[0022] The first friction resistance is determined according to the unit pressure and the friction coefficient between the conveyor belt and the roller.

[0023] According to the above aspects and any possible implementation manner, an implementation manner is further provided, wherein the computer is specifically used for:

[0024] Monitoring the change of electric power of the belt conveyor during the process of conveying the material;

[0025] The second friction resistance is determined according to changes in the speed and the electric power.

[0026] According to the aspects described above and any possible implementation, an implementation is further provided, wherein the piezoelectric device is disposed at a central position on the outer surface of the roller of the belt conveyor, and a piezoelectric device is disposed on the outer surface of each roller.

[0027] According to the aspects described above and any possible implementation, there is further provided an implementation, wherein the image information transceiver and the visual acquisition device constitute an independent integrated device, which is located on the side of the belt conveyor and is aligned with the belt conveyor.

[0028] According to a second aspect of the present disclosure, a method for measuring friction resistance of a belt conveyor is provided. The method comprises:

[0029] Collect the piezoelectric signal generated by the conveyor belt on the roller under the pressure of the material on the conveyor belt;

[0030] Collecting image information between the conveyor belt and the roller;

[0031] monitoring the speed of the belt conveyor;

[0032] A target friction resistance generated by the belt conveyor is determined based on the piezoelectric signal, the image information and the speed.

[0033] According to a third aspect of the present disclosure, an electronic device is provided, which includes a memory and a processor, wherein a computer program is stored in the memory, and when the processor executes the program, the method described above is implemented.

[0034] According to a fourth aspect of the present disclosure, a computer-readable storage medium is provided, on which a computer program is stored. When the program is executed by a processor, the method according to the first aspect and / or the second aspect of the present disclosure is implemented.

[0035] In the present disclosure, a piezoelectric device is laid on the outer surface of the roller of the belt conveyor to collect the piezoelectric signal generated by the conveyor belt relative to the roller, the image information between the conveyor belt and the roller can be collected by a visual collection device, and the speed of the belt conveyor can be monitored by a speed sensor. The piezoelectric signal, image information and speed can be used to automatically and accurately determine the target friction resistance generated by the belt conveyor, thereby realizing real-time measurement of the unit friction resistance of the belt conveyor, preventing safety hazards caused by excessive unit friction resistance, and at the same time, improving the safety and reliability of the system operation, avoiding safety hazards caused by unfavorable friction resistance monitoring.

[0036] It should be understood that the contents described in the summary of the invention are not intended to limit the key or important features of the embodiments of the present disclosure, nor are they intended to limit the scope of the present disclosure. Other features of the present disclosure will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The above and other features, advantages and aspects of the embodiments of the present disclosure will become more apparent with reference to the following detailed description in conjunction with the accompanying drawings. The accompanying drawings are used to better understand the present solution and do not constitute a limitation of the present disclosure. In the accompanying drawings, the same or similar reference numerals represent the same or similar elements, among which:

[0038] Figure 1 A block diagram of a belt conveyor friction resistance measuring system according to an embodiment of the present disclosure is shown;

[0039] Figure 2 A system diagram of a belt conveyor friction resistance measuring system according to an embodiment of the present disclosure is shown;

[0040] Figure 3 Shows Figure 2 The structural diagram of the roller in;

[0041] Figure 4 Shows Figure 2 and Figure 3 Axial expansion diagram of the roller in;

[0042] Figure 5 A flow chart showing a method for measuring friction resistance of a belt conveyor according to an embodiment of the present disclosure is shown;

[0043] Figure 6 A flow chart showing another method for measuring friction resistance of a belt conveyor according to an embodiment of the present disclosure is shown;

[0044] Figure 7 A block diagram of an exemplary electronic device capable of implementing embodiments of the present disclosure is shown.

[0045] The correspondence between numbers and part names is explained below:

[0046] 1—roller, 2—piezoelectric device, 3—conveyor belt, 4—visual acquisition device, 5—image information transceiver, 6—electrical signal transceiver, 7—speed sensor, 8—computer. DETAILED DESCRIPTION

[0047] In order to make the purpose, technical solution and advantages of the embodiments of the present disclosure clearer, the technical solution in the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings in the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0048] In addition, the term "and / or" in this article is only a description of the association relationship between the associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0049] Figure 1 FIG. 1 is a block diagram of a belt conveyor friction resistance measuring system 100 according to an embodiment of the present disclosure. Figure 1 As shown, the block diagram 100 includes:

[0050] The piezoelectric device 2 is laid on the outer surface of the roller 1 of the belt conveyor and is used to collect the piezoelectric signal generated by the pressure of the material on the conveyor belt 3; the piezoelectric device 2 is made of piezoelectric material.

[0051] A visual acquisition device 4, used for acquiring image information between the conveyor belt 3 and the roller 1;

[0052] A speed sensor 7, installed on one side of the conveyor belt 3, for monitoring the speed of the belt conveyor;

[0053] The speed sensor 7 is arranged on the side of the belt conveyor to measure the speed of the belt conveyor in real time.

[0054] The computer 8 is connected to the piezoelectric device 2, the visual acquisition device 4 and the speed sensor 7 respectively, and is used to determine the target friction resistance generated by the belt conveyor according to the received piezoelectric signal, the image information and the speed. After the target friction resistance is calculated, the target friction resistance can be prompted, and if the target friction resistance is greater than the preset resistance threshold, a warning will be issued.

[0055] By laying a piezoelectric device 2 on the outer surface of the roller 1 of the belt conveyor, the piezoelectric signal generated by the conveyor belt 3 relative to the roller 1 can be collected, the image information between the conveyor belt 3 and the roller 1 can be collected by the visual collection device 4, and the speed of the belt conveyor can be monitored by the speed sensor 7. Therefore, the piezoelectric signal, image information and speed can be used to automatically and accurately determine the target friction resistance generated by the belt conveyor, and the real-time measurement of the unit friction resistance of the belt conveyor can be achieved, thereby preventing safety hazards caused by excessive unit friction resistance. At the same time, the safety and reliability of the system operation is improved, and safety hazards caused by unfavorable friction resistance monitoring are avoided.

[0056] In some embodiments, the system further comprises:

[0057] An electrical signal transceiver 6, connected between the piezoelectric device 2 and the computer 8, for receiving the piezoelectric signal generated by the piezoelectric device 2 and sending it to the computer 8;

[0058] The image information transceiver 5 is connected between the visual acquisition device 4 and the computer 8 , and is used for receiving the image information generated by the visual acquisition device 4 and sending it to the computer 8 .

[0059] The electrical signal generated by the piezoelectric device 2 can be received by the electrical signal transceiver 6 and sent to the computer 8, so that the computer 8 can accurately calculate the pressure based on the electrical signal; the image information generated by the visual acquisition device 4 is received by the image information transceiver 5 and sent to the computer 8, so that the computer 8 can analyze the image information and accurately determine the contact length between the conveyor belt 3 and the roller 1.

[0060] In some embodiments, the computer 8 is specifically used for:

[0061] Determine a first friction resistance generated by the belt conveyor in a process of conveying the material according to the piezoelectric signal and the image information;

[0062] The second friction resistance generated by the belt conveyor in the process of conveying the material is determined according to the speed; the friction resistances calculated in two different forms can be corrected and compensated for each other to obtain a more accurate friction resistance.

[0063] The target friction resistance is determined based on the first friction resistance and the second friction resistance.

[0064] The first friction resistance generated by the belt conveyor in the process of conveying the material can be automatically determined through the pressure signal and the image information, and then the second friction resistance generated by the belt conveyor in the process of conveying the material can be determined according to the speed, so that the first friction resistance and the second friction resistance are calculated respectively according to the two methods, so that the unit friction resistance on the conveyor belt 3 of the belt conveyor can be obtained according to the comprehensive analysis of the two data, that is, the target friction resistance is accurately calculated, thereby improving the calculation accuracy of the target friction resistance.

[0065] Specifically, the friction resistance calculated by these two methods will have two curves, and then the two current curves are fitted using Matlab, and the resulting curve is the unit friction resistance (ie, the target friction resistance).

[0066] In some embodiments, the computer 8 is specifically used for:

[0067] Determine the contact length between the conveyor belt 3 and the roller 1 through the image information;

[0068] Determine the contact area between the conveyor belt 3 and the roller 1 according to the contact length and the axial distance of the piezoelectric device 2;

[0069] determining a current pressure according to the piezoelectric signal;

[0070] Determining a unit pressure on the piezoelectric device 2 according to the current pressure and the contact area;

[0071] The first friction resistance is determined according to the unit pressure and the friction coefficient between the conveyor belt 3 and the roller 1. The friction coefficient between the conveyor belt 3 and the roller 1 is known and can be an empirical value, such as the friction coefficient f=0.022

[0072] By analyzing the image information, the contact length between the conveyor belt 3 and the roller 1 (i.e., the longitudinal contact length between the conveyor belt 3 and a single roller 1) can be determined, and then the contact length is multiplied by the axial distance of the piezoelectric device 2 to determine the contact area between the conveyor belt 3 and the roller 1, so that the unit pressure on the piezoelectric device 2 can be automatically calculated based on the current pressure and the contact area, so that the first friction resistance f1 = unit pressure F*friction coefficient f can be automatically and accurately calculated based on the unit pressure and the friction coefficient between the conveyor belt 3 and the roller 1.

[0073] In some embodiments, the computer 8 is specifically used for:

[0074] Monitoring the change of electric power of the belt conveyor during the process of conveying the material;

[0075] The second friction resistance is determined according to changes in the speed and the electric power.

[0076] The computer 8 can monitor the motor power of the belt conveyor in real time during the process of conveying the material. Since the power change of the working surface of the belt conveyor during operation is only related to the work done by the friction force, the real-time friction force, that is, the second friction resistance f2, can be calculated through power and speed.

[0077] In some embodiments, the piezoelectric device 2 is disposed at the central position of the outer surface of the roller 1 of the belt conveyor, and a piezoelectric device 2 is disposed on the outer surface of each roller 1 .

[0078] In some embodiments, the image information transceiver 5 and the visual acquisition device 4 constitute an independent integrated device, which is located on the side of the belt conveyor and is aligned with the belt conveyor.

[0079] By laying the piezoelectric device 2 at the central position of the outer surface of the roller 1 of the belt conveyor, and laying a piezoelectric device 2 on the outer surface of each roller 1, it is convenient to accurately calculate the piezoelectric signal generated by the conveyor belt on its roller 1 under the pressure of the material.

[0080] The visual acquisition device 4 and the signal transceiver are separated from the belt conveyor and the computer 8, and can be directly installed in the vacant area on the side of the belt conveyor in the space through supports such as a rack.

[0081] The following will be combined Figure 2-Figure 4 as well as Figure 6The technical solution of the present disclosure is further described in detail:

[0082] like Figure 2 and Figure 3 The present invention provides a belt conveyor unit friction resistance measurement system, including a roller 1, a piezoelectric device 2 is installed on the outer surface of the roller 1, a speed sensor 7 is arranged on one side of the belt conveyor, a visual acquisition device 4 collects image information between the conveyor belt 3 and the roller 1, and transmits the image information to a computer 8 through an image signal transceiver 5, an electrical signal transceiver 6 is installed on the outer side of the roller 1, and is electrically connected to the piezoelectric device 2, and the electrical signals of the piezoelectric device 2 and the speed sensor 7 are transmitted to the computer 8, and the computer 8 further analyzes and processes the above information.

[0083] The roller 1 is located below the conveyor and bears the pressure of the material on the conveyor belt 3. The piezoelectric device 2 is laid in the center of the outer surface of the roller 1. Its thickness is small enough not to affect the normal operation of the conveyor and will not affect the operation of the conveyor belt 3. The image signal transceiver 5 receives the image information fed back by the visual acquisition device 4 and feeds it back to the computer 8. The electrical signal transceiver 6 receives the electrical signal generated by the piezoelectric device 2 under the pressure condition of the conveyor belt 3 and feeds the electrical signal back to the computer 8. The computer 8 comprehensively analyzes the above two types of signals, determines the current pressure based on the electrical signal, calculates the contact area based on the image information, and at the same time, uses the two parameters of contact area and pressure for analysis to obtain the current friction resistance per unit area and complete the measurement of unit friction resistance. (Note: The visual acquisition device 4 and the signal transceiver 5 are separated from the conveyor and the computer, and can be directly installed in the vacant area on the side of the belt conveyor in the space through supports such as racks)

[0084] like Figure 3 and Figure 4As shown, the present disclosure lays the piezoelectric device 2 on the outer surface of the roller 1, the total length of the roller 1 is L (i.e., the axial distance), the laying width of the piezoelectric device 2 is l, and the laying position is located at the center of the roller 1. The computer 8 uses two modules to process the electrical signal and the image signal respectively. The information between the two modules can be communicated, but they do not interfere with each other during the processing process and operate independently. The visual acquisition device feeds back the image information to the computer 8. The computer 8 can determine the current contact length between the conveyor belt 3 and the roller 1. The product of the contact length and the width l of the piezoelectric device 2 is the current contact area. At the same time, another module can judge the current pressure according to the characteristics of the electrical signal. The current pressure is the pressure applied by the conveyor belt 3 to the area corresponding to the piezoelectric device 2 currently in contact. The current pressure is divided by the contact area to obtain the pressure corresponding to the current unit area. Then, the pressure corresponding to the current unit area is multiplied by the friction coefficient between the current roller 1 and the conveyor belt 3 to obtain the current unit friction resistance of the belt conveyor, so as to realize the real-time detection of the unit friction resistance and prevent the conveyor belt 3 of the belt conveyor from being subjected to excessive load, which will cause the conveyor belt 3 to be unreliable in operation and cause safety hazards. At the same time, the speed sensor 7 measures the speed of the belt conveyor in real time, and the computer monitors the power change of the belt conveyor motor. Since the power change of the working surface is only related to the work done by the friction force, the real-time friction force (P=Fv) can be calculated by power and speed. The comprehensive analysis of the two data can be used to obtain the unit friction resistance on the belt conveyor belt, that is, to calculate two friction resistances. Two curves will appear for the two friction resistances. Matlab is used to fit the current two curves, and the obtained curve is the unit friction resistance.

[0085] The method for measuring the unit friction resistance of the above-mentioned belt conveyor is as follows:

[0086] like Figure 6 As shown, the pressure brought by the conveyor belt 3 on the current contact area is obtained by using the piezoelectric device 2, and then the contact length between the current conveyor belt 3 and the roller 1 is determined according to the image information collected by the visual acquisition device 4, and the contact area is calculated using the contact length and the width of the piezoelectric device 2. The electrical signal is transmitted to the electrical signal processing module, and the electrical signal processing module calculates the current pressure according to the current electrical signal characteristics. The computer 8 can calculate the unit pressure at the current position according to the contact area and the pressure corresponding to the current contact area. There is a friction resistance coefficient between the roller 1 and the conveyor belt 3. The friction resistance per unit area can be obtained by multiplying the pressure per unit area by the friction resistance coefficient, and the speed sensor 7 sends the speed signal to the computer. At the same time, the computer also monitors the motor power of the belt conveyor in real time, and calculates the friction resistance according to its changes and speed. The comprehensive analysis and calculation of the two sets of data can realize the unit friction resistance measurement work.

[0087] This method realizes the real-time measurement of the unit friction resistance of the belt conveyor, preventing safety hazards caused by excessive unit friction resistance. At the same time, it also improves the safety and reliability of the system operation, avoids safety hazards caused by unfavorable friction resistance monitoring, and creates a new idea for the measurement of unit friction resistance of belt conveyors.

[0088] The technical solution of the present disclosure will be further described in detail below:

[0089] In response to the problems existing in the prior art, the present invention provides a method of combining piezoelectric effect and visual measurement, coordinated motor power and speed measurement, and combined with calculation to achieve the measurement of unit friction resistance on the conveyor belt of the belt conveyor. Piezoelectric material is laid on the outer surface of the conveyor roller, and visual technology is used to collect the current contact length between the conveyor belt and the roller. The contact area is calculated based on the electrical signal fed back by the piezoelectric material and the contact length of the conveyor belt and the width of the piezoelectric material. The electrical signal fed back by the piezoelectric material is used to judge the pressure situation, and the pressure per unit area is calculated based on the current pressure and contact area. The speed sensor is then used to measure the belt conveyor in real time, and the computer monitors the change in the belt conveyor motor power to calculate the real-time friction force. The two data are comprehensively analyzed and coordinated to obtain the unit friction resistance on the conveyor belt of the belt conveyor.

[0090] In order to achieve the above object, the present invention adopts the following technical solution:

[0091] A device for measuring unit friction resistance of a belt conveyor includes a roller, which is connected to a piezoelectric device. The piezoelectric device made of piezoelectric material is laid on the surface of the roller. A speed sensor is placed on the side of the belt conveyor for real-time measurement. A visual acquisition device acquires the contact length between the conveyor belt and the roller during the current working process. An image information transceiver is connected to the visual acquisition device. The visual acquisition device collects visual signals and radiates them to a computer through the visual signal transceiver. The computer processes the signals. An electric signal transceiver is installed on one side of the roller. The speed sensor and the piezoelectric device laid on the surface of the roller transmit electric signals to the computer through the electric signal transceiver. The computer processes the signals according to the information fed back by the electric signal transceiver and the image signal transceiver, as well as the speed signal and the power change of the belt conveyor motor. The unit friction resistance of the conveyor belt of the current belt conveyor is comprehensively analyzed and calculated to ensure the real-time measurement of the unit friction resistance of the belt conveyor and prevent the reliability of the working process from being affected by excessive friction resistance.

[0092] Furthermore, the conveyor belt and the roller can work in combination, and the piezoelectric material and speed sensor laid on the surface of the roller do not affect the normal operation of the belt conveyor. Correspondingly, the electrical signal transceiver can accurately receive the electrical signal characteristics fed back by the piezoelectric device on the surface of the roller, and reliably feed back the electrical signal to the computer, thereby ensuring the reliability of the computer's electrical signal processing process.

[0093] Furthermore, the computer can perform a comprehensive analysis on the image information fed back by the image signal transceiver, and can determine the contact area according to the current signal, and further calculate the friction resistance per unit area.

[0094] Furthermore, the computer also monitors the belt conveyor motor power in real time and calculates the friction resistance based on its changes and speed.

[0095] A device for measuring unit friction resistance of a belt conveyor includes the arrangement of piezoelectric material and speed sensor; a piezoelectric device is added to a roller; the speed sensor is arranged on the side of the belt conveyor; an electric signal is output through an electric signal transceiver on the roller; an image signal is transmitted through an image signal transceiver; and a computer analyzes and processes each signal after receiving it, and obtains the unit friction resistance borne by the belt conveyor at this time through comprehensive analysis and calculation.

[0096] Beneficial effects of the present disclosure:

[0097] The pressure of the conveyor belt of the belt conveyor can be regarded as a uniformly distributed load in the adjacent area. Therefore, the piezoelectric device and speed sensor can be used to measure the electrical signal and real-time speed generated by the current position. The computer can be used to further process the electrical signal, and the pressure can be analyzed according to the strength of the current electrical signal. At the same time, the visual acquisition device is used to obtain the current contact length between the conveyor belt and the roller, and the contact area between the current conveyor belt and the piezoelectric device is calculated according to the contact length. Then, the current unit friction resistance is calculated according to the contact area and pressure. At the same time, the computer monitors the motor power of the belt conveyor in real time, and calculates the current unit friction resistance in combination with the real-time speed. The two data are coordinated and comprehensively analyzed to obtain the unit friction resistance on the conveyor belt of the belt conveyor. It effectively compensates for the safety hazards caused by the insufficient monitoring of unit friction resistance by previous detection technology, and uses the organic combination of piezoelectric devices, visual processing devices and speed sensors to complete the measurement of the unit friction resistance of the conveyor, effectively avoiding the safety hazards caused by insufficient monitoring of the unit friction resistance of the conveyor belt.

[0098] It should be noted that, for the aforementioned method embodiments, for the sake of simplicity, they are all described as a series of action combinations, but those skilled in the art should be aware that the present disclosure is not limited by the order of the actions described, because according to the present disclosure, certain steps can be performed in other orders or simultaneously. Secondly, those skilled in the art should also be aware that the embodiments described in the specification are all optional embodiments, and the actions and modules involved are not necessarily required by the present disclosure.

[0099] The above is an introduction to the method embodiment. The following is a further explanation of the scheme disclosed in the present invention through an apparatus embodiment.

[0100] Figure 5FIG. 1 is a flow chart showing a method for measuring friction resistance of a belt conveyor according to an embodiment of the present disclosure. Figure 5 As shown, the method 500 includes:

[0101] Step 510, collecting a piezoelectric signal generated by the conveyor belt on the roller under the pressure of the material on the conveyor belt;

[0102] Step 520, collecting image information between the conveyor belt and the roller;

[0103] Step 530, monitoring the speed of the belt conveyor;

[0104] Step 540: Determine the target friction resistance generated by the belt conveyor according to the piezoelectric signal, the image information and the speed.

[0105] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the described module can refer to the corresponding process in the aforementioned method embodiment, and will not be repeated here.

[0106] According to an embodiment of the present disclosure, the present disclosure also provides an electronic device and a non-transitory computer-readable storage medium storing computer instructions.

[0107] Figure 7 A schematic block diagram of an electronic device 700 that can be used to implement an embodiment of the present disclosure is shown. The electronic device is intended to represent various forms of digital computers, such as laptop computers, desktop computers, workstations, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The electronic device can also represent various forms of mobile devices, such as personal digital processing, cellular phones, smart phones, wearable devices, and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely examples and are not intended to limit the implementation of the present disclosure described and / or required herein.

[0108] The device 700 includes a computing unit 701, which can perform various appropriate actions and processes according to a computer program stored in a read-only memory (ROM) 702 or a computer program loaded from a storage unit 708 into a random access memory (RAM) 703. In the RAM 703, various programs and data required for the operation of the device 700 can also be stored. The computing unit 701, the ROM 702, and the RAM 703 are connected to each other via a bus 704. An input / output (I / O) interface 705 is also connected to the bus 704.

[0109] A number of components in the device 700 are connected to the I / O interface 705, including: an input unit 706, such as a keyboard, a mouse, etc.; an output unit 707, such as various types of displays, speakers, etc.; a storage unit 708, such as a disk, an optical disk, etc.; and a communication unit 709, such as a network card, a modem, a wireless communication transceiver, etc. The communication unit 709 allows the device 700 to exchange information / data with other devices through a computer network such as the Internet and / or various telecommunication networks.

[0110] The computing unit 701 may be a variety of general and / or special processing components with processing and computing capabilities. Some examples of the computing unit 701 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various dedicated artificial intelligence (AI) computing chips, various computing units running machine learning model algorithms, digital signal processors (DSPs), and any appropriate processors, controllers, microcontrollers, etc. The computing unit 701 performs the various methods and processes described above, such as methods 500 and 600. For example, in some embodiments, methods 500 and 600 may be implemented as a computer software program, which is tangibly included in a machine-readable medium, such as a storage unit 708. In some embodiments, part or all of the computer program may be loaded and / or installed on the device 700 via the ROM 702 and / or the communication unit 709. When the computer program is loaded into the RAM 703 and executed by the computing unit 701, one or more steps of the methods 500 and 600 described above may be performed. Alternatively, in other embodiments, the computing unit 701 may be configured to execute the methods 500 and 600 in any other appropriate manner (eg, by means of firmware).

[0111] Various implementations of the systems and techniques described above herein can be implemented in digital electronic circuit systems, integrated circuit systems, field programmable gate arrays (FPGAs), application specific integrated circuits (ASICs), application specific standard products (ASSPs), systems on chips (SOCs), load programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various implementations can include: being implemented in one or more computer programs that can be executed and / or interpreted on a programmable system including at least one programmable processor, which can be a special purpose or general purpose programmable processor that can receive data and instructions from a storage system, at least one input device, and at least one output device, and transmit data and instructions to the storage system, the at least one input device, and the at least one output device.

[0112] The program code for implementing the method of the present disclosure may be written in any combination of one or more programming languages. These program codes may be provided to a processor or controller of a general-purpose computer, a special-purpose computer, or other programmable data processing device, so that the program code, when executed by the processor or controller, enables the functions / operations specified in the flow chart and / or block diagram to be implemented. The program code may be executed entirely on the machine, partially on the machine, partially on the machine and partially on a remote machine as a stand-alone software package, or entirely on a remote machine or server.

[0113] In the context of the present disclosure, a machine-readable medium may be a tangible medium that may contain or store a program for use by or in conjunction with an instruction execution system, device, or equipment. A machine-readable medium may be a machine-readable signal medium or a machine-readable storage medium. A machine-readable medium may include, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, device, or equipment, or any suitable combination of the foregoing. A more specific example of a machine-readable storage medium may include an electrical connection based on one or more lines, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

[0114] To provide interaction with a user, the systems and techniques described herein can be implemented on a computer having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to the user; and a keyboard and pointing device (e.g., a mouse or trackball) through which the user can provide input to the computer. Other types of devices can also be used to provide interaction with the user; for example, the feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form (including acoustic input, voice input, or tactile input).

[0115] The systems and techniques described herein may be implemented in a computing system that includes back-end components (e.g., as a data server), or a computing system that includes middleware components (e.g., an application server), or a computing system that includes front-end components (e.g., a user computer with a graphical user interface or a web browser through which a user can interact with implementations of the systems and techniques described herein), or a computing system that includes any combination of such back-end components, middleware components, or front-end components. The components of the system may be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: a local area network (LAN), a wide area network (WAN), and the Internet.

[0116] A computing system may include a client and a server. The client and the server are generally remote from each other and usually interact through a communication network. The relationship of client and server is generated by computer programs running on respective computers and having a client-server relationship with each other. The server may be a cloud server, a server of a distributed system, or a server combined with a blockchain.

[0117] It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps recorded in this disclosure can be executed in parallel, sequentially or in different orders, as long as the desired results of the technical solutions disclosed in this disclosure can be achieved, and this document does not limit this.

[0118] The above specific implementations do not constitute a limitation on the protection scope of the present disclosure. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present disclosure shall be included in the protection scope of the present disclosure.

Claims

1. A belt conveyor friction resistance measurement system, characterized in that: include: A piezoelectric device, which is laid on the outer surface of the roller of the belt conveyor and is used to collect the piezoelectric signal generated by the pressure of the material on the conveyor belt; A visual acquisition device, used for acquiring image information between the conveyor belt and the roller; A speed sensor, mounted on one side of the conveyor belt, for monitoring the speed of the belt conveyor; A computer, connected to the piezoelectric device, the visual acquisition device and the speed sensor, respectively, for determining the target friction resistance generated by the belt conveyor according to the received piezoelectric signal, the image information and the speed; The computer is specifically used for: Determine a first friction resistance generated by the belt conveyor in a process of conveying the material according to the piezoelectric signal and the image information; Determining a second friction resistance generated by the belt conveyor in the process of conveying the material according to the speed; determining the target friction resistance according to the first friction resistance and the second friction resistance; The computer is specifically used for: Determine the contact length between the conveyor belt and the roller by using the image information; Determining a contact area between the conveyor belt and the roller according to the contact length and the axial distance of the piezoelectric device; determining a current pressure according to the piezoelectric signal; Determine the unit pressure on the piezoelectric device according to the current pressure and the contact area; determine the first friction resistance according to the unit pressure and the friction coefficient between the conveyor belt and the roller; The computer is specifically used for: Monitoring the change of electric power of the belt conveyor during the process of conveying the material; determining the second friction resistance according to the changes in the speed and the electric power; The computer is also specifically used for: The first friction resistance curve and the second friction resistance curve are fitted to determine the target friction resistance.

2. The system according to claim 1, characterized in that The system further comprises: an electrical signal transceiver, connected between the piezoelectric device and the computer, for receiving the piezoelectric signal generated by the piezoelectric device and sending it to the computer; An image information transceiver is connected between the visual acquisition device and the computer, and is used to receive the image information generated by the visual acquisition device and send it to the computer.

3. The system according to claim 1, characterized in that The piezoelectric device is disposed at the central position of the outer surface of the roller of the belt conveyor, and a piezoelectric device is disposed on the outer surface of each roller.

4. The system according to claim 2 or 3, characterized in that: The image information transceiver and the visual acquisition device form an independent integrated device, which is located on the side of the belt conveyor and is aligned with the belt conveyor.

5. A method for measuring the friction resistance of a belt conveyor, characterized in that: include: Collect the piezoelectric signal generated by the conveyor belt on the roller under the pressure of the material on the conveyor belt; Collecting image information between the conveyor belt and the roller; monitoring the speed of the belt conveyor; determining a target friction resistance generated by the belt conveyor according to the piezoelectric signal, the image information and the speed; The step of determining the target friction resistance generated by the belt conveyor according to the piezoelectric signal, the image information and the speed includes: Determine a first friction resistance generated by the belt conveyor in a process of conveying the material according to the piezoelectric signal and the image information; Determining a second friction resistance generated by the belt conveyor in the process of conveying the material according to the speed; determining the target friction resistance according to the first friction resistance and the second friction resistance; The step of determining the first friction resistance generated by the belt conveyor in the process of conveying the material according to the piezoelectric signal and the image information comprises: Determine the contact length between the conveyor belt and the roller by using the image information; Determining the contact area between the conveyor belt and the roller according to the contact length and the axial distance of the piezoelectric device; determining a current pressure according to the piezoelectric signal; Determine the unit pressure on the piezoelectric device according to the current pressure and the contact area; determine the first friction resistance according to the unit pressure and the friction coefficient between the conveyor belt and the roller; The step of determining the second friction resistance generated by the belt conveyor in the process of conveying the material according to the speed includes: Monitoring the change of electric power of the belt conveyor during the process of conveying the material; determining the second friction resistance according to the changes in the speed and the electric power; The step of determining the target friction resistance according to the first friction resistance and the second friction resistance includes: The first friction resistance curve and the second friction resistance curve are fitted to determine the target friction resistance.

6. An electronic device, characterized in that: include: at least one processor; as well as 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 to enable the at least one processor to perform the method of claim 5 .

7. A non-transitory computer-readable storage medium storing computer instructions, characterized in that: The computer instructions are used to cause the computer to execute the method according to claim 5.

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