CN111392369A

CN111392369A - Conveyer belt monitoring system

Info

Publication number: CN111392369A
Application number: CN202010359841.7A
Authority: CN
Inventors: 窦柏林; 逯洪涛; 杨彬; 纪华
Original assignee: Wire Rope Inspection Technology Co ltd
Current assignee: Wire Rope Inspection Technology Co ltd
Priority date: 2020-04-29
Filing date: 2020-04-29
Publication date: 2020-07-10

Abstract

The application provides a conveyer belt monitoring system belongs to conveyer belt damage and detects technical field. The system comprises a longitudinal tearing image acquisition device, a light supplementing and illuminating device, a dust removal device, a communication power substation and a multi-channel terminal main control station; the longitudinal tearing image acquisition device is arranged below an upper conveying belt of the conveying belt and/or above a lower conveying belt of the conveying belt; the light supplementing lighting device is arranged in a longitudinal tearing undetermined image acquisition area of the longitudinal tearing image acquisition device; the dust removal device is used for cleaning dust; the communication power substation is arranged at the longitudinal tearing detection position of the conveying belt and used for controlling all parts to work; and the multi-channel terminal main control station is used for driving all the parts to work through the communication power substation and also used for judging whether the conveyor belt is longitudinally torn or not based on the longitudinally torn undetermined image. The accuracy of the collected image is improved through the cooperation of the lighting device and the dust removal device, so that the detection accuracy is improved.

Description

Conveyer belt monitoring system

Technical Field

The application relates to a conveyer belt damage detects technical field, particularly, relates to a conveyer belt monitoring system.

Background

The conveying belt is an important carrying device in the transportation industry of mines, ports and the like, and is widely used for conveying materials in the fields of coal, mines, ports, metallurgy, electric power, chemical industry and the like. The product is composed of core glue, covering layer and edge glue, or steel wire rope.

The conveyor belt plays a role in traction, tension and load bearing in the transport machinery, so that the production safety can be seriously threatened once the conveyor belt is in a damaged state, but the detection of the damaged state of the conveyor belt is a difficult problem in safety management because the conveyor belt is usually in a continuous working state. In the damage state of the conveying belt, the probability of occurrence of longitudinal tearing accidents is high, and the problems of low efficiency and high labor cost exist through manual detection; when the X-ray equipment and the existing image recognition equipment are used for detection, the problem of low detection accuracy exists due to the influence of the working environment of much dust and much aerosol.

Disclosure of Invention

In view of this, an object of the present application is to provide a conveyor belt monitoring system to solve the problem of low accuracy of detecting longitudinal tear of a conveyor belt in the prior art.

The embodiment of the application provides a conveyor belt monitoring system, which comprises a longitudinal tearing image acquisition device, a light supplementing and illuminating device, a dust removal device, a communication power substation and a multi-channel terminal main control station; the communication power substation is in communication connection with the multi-channel terminal main control station and is electrically connected with the longitudinal tearing image acquisition device, the light supplementing illumination device and the dust removal device; the longitudinal tearing image acquisition device is arranged below an upper conveying belt of the conveying belt and/or above a lower conveying belt of the conveying belt and is used for acquiring a longitudinal tearing undetermined image of the conveying belt; the light supplementing lighting device is arranged in a longitudinal tearing undetermined image acquisition area of the longitudinal tearing image acquisition device and used for providing a light source so as to improve the accuracy of the longitudinal tearing undetermined image acquired by the longitudinal tearing image acquisition device; the air opening of the dust removal device is arranged at the light outlet of the light supplement lighting device and/or the lens of the longitudinal tearing image acquisition device and is used for cleaning dust so as to eliminate the shielding influence of the dust on the light outlet and the lens; the communication power substation is arranged at the longitudinal tearing detection position of the conveying belt and used for controlling the longitudinal tearing image acquisition device, the light supplementing illumination device and the dust removal device to work; the multi-channel terminal main control station is arranged in a control machine room and used for sending a control command to the communication power substation to drive the longitudinal tearing image acquisition device, the light supplementing lighting device and the dust removal device to work and judging whether the conveyor belt is longitudinally torn or not based on the longitudinal tearing undetermined image acquired by the longitudinal tearing image acquisition device.

In the implementation mode, the longitudinal tearing condition of the conveying belt is detected in an image recognition mode, the longitudinal tearing detection efficiency is improved, and meanwhile, the dust collection device is adopted to collect dust for the image collection device, so that the quality of images collected by the image collection device is improved, and the accuracy of the longitudinal tearing detection of the conveying belt is improved.

Optionally, the system further comprises a surface damage image acquisition device, wherein the surface damage image acquisition device is arranged below the lower conveying belt and is used for acquiring a surface damage pending image of the conveying belt; the multi-channel terminal main control station is further used for judging whether the conveyor belt is damaged on the basis of the surface damage image to be determined acquired by the surface damage image acquisition device.

In the implementation mode, the surface damage condition of the conveying belt is detected in an image recognition mode, and surface damage undetermined image acquisition is carried out at the position where the surface damage is easier to detect through the different setting directions of the longitudinal tearing image acquisition device, so that the surface damage detection efficiency is improved.

Optionally, the system further includes a stroke metering device electrically connected to the communication power substation, the stroke metering device is disposed above the lower conveying belt, and a friction roller of the stroke metering device and a surface friction of the lower conveying belt generate sampling pulses, so that the longitudinal tearing image acquisition device and/or the surface damage image acquisition device determine a position corresponding relationship between an image acquisition region and the conveying belt based on the sampling pulses.

In the implementation mode, the running position of the conveying belt and the time of the image acquisition device for acquiring the image are determined through the speed sensor in the stroke metering device, so that the image acquired by the image acquisition device corresponds to the position of the acquired image of the conveying belt at the acquisition time of the image acquisition device, and the detection part can be accurately positioned.

Optionally, the supplementary lighting device is an L ED lighting device.

In the implementation mode, the L ED lighting device is adopted, so that the applicability and the stability of the conveyor belt monitoring system are improved.

Optionally, the supplementary lighting device includes an adjusting seat for adjusting the light irradiation angle.

In the above implementation manner, the light irradiation angle of the light supplement lighting device can be adjusted by the adjusting seat, and the quality of the collected image is further improved.

Optionally, the image acquisition device is a line camera, and the adjustment range of the inclination angle of the lens of the line camera is 40-70 °.

In the above implementation, the accuracy of the acquired image is made higher by the adjustable lens tilt angle setting.

Optionally, the dust removal device includes a blowing pipe and a tuyere purge device, the blowing pipe provides purge gas for the tuyere purge device through an air outlet, and the tuyere purge device is used for purging the light outlet and the lens.

In the implementation mode, the light outlet and the lens are swept by the air port sweeping device, adverse effects of dust, fog and the like on the image acquisition device and the light supplementing and illuminating device can be reduced, the quality of acquired images is improved, and therefore the detection accuracy of the conveying belt monitoring system is improved.

Optionally, the blast pipeline includes an air blower, a shaft and an electromagnetic valve, the electromagnetic valve is electrically connected to the communication power substation, the air blower provides purge gas for the tuyere purge device through the shaft, and the multichannel terminal main control station controls starting and stopping of the air blower by controlling the electromagnetic valve.

In the implementation mode, the start and stop of the air blower are controlled by the multi-channel terminal main control station control electromagnetic valve, so that the controllability of the dust removal device is improved.

Optionally, the system further comprises an audible and visual alarm device electrically connected with the communication power substation.

In the implementation mode, the sound-light alarm device carries out sound-light alarm when detecting that the conveying belt is longitudinally torn or damaged on the surface, so that the use safety of the conveying belt is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments of the present application will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and that those skilled in the art can also obtain other related drawings based on the drawings without inventive efforts.

Fig. 1 is a schematic structural diagram of a conveyor belt monitoring system according to an embodiment of the present disclosure;

fig. 2 is a schematic connection diagram of a communication power substation according to an embodiment of the present disclosure;

fig. 3 is a schematic structural diagram of a supplementary lighting device according to an embodiment of the present disclosure;

fig. 4 is a schematic structural diagram of a dust removing device provided in an embodiment of the present application.

Icon: 10-a conveyor belt monitoring system; 11-a multichannel terminal master control station; 12-a communication power substation; 13-an image acquisition device; 131-a surface damage image acquisition device; 132-longitudinal tear image capture device; 14-a dust removal device; 141-blast pipe; 1411-a blower; 1412-chimney; 1413-a solenoid valve; 142-tuyere purger; 15-a supplementary lighting device; 16-a stroke metering device; 17-a sound and light alarm device; 18-switch.

Detailed Description

The technical solution in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application.

The applicant researches and discovers that the longitudinal tearing reasons of the existing conveying belt mainly comprise: when one side of the conveying belt deviates greatly, the conveying belt is folded or folded, and is scratched or scratched due to uneven tension, so that the conveying belt is torn; tearing caused by material clamping pressure generally occurs at the lower part of a chute, the distance between the front edge of the chute and a conveying belt is limited, the strength of the bearing force distributed at intervals of buffer carrier rollers below the conveying belt is uneven, and the material is clamped between the conveying belt and the chute and cannot be separated to cause tearing; tearing caused by foreign body scratching. Generally speaking, the longitudinal tear detection of the conveying belt in the prior art is usually a manual detection mode or an X-ray equipment detection mode, the manual detection mode has the problems of low efficiency and great labor consumption, and the X-ray equipment detection mode has the problems of high equipment environment requirement, high cost, time dead zone detection and the like.

In order to solve the above problems, an embodiment of the present invention provides a conveyor belt monitoring system 10, please refer to fig. 1, and fig. 1 is a schematic structural diagram of a conveyor belt monitoring system according to an embodiment of the present invention.

The conveyor belt monitoring system 10 comprises a multi-channel terminal main control station 11, a communication power substation 12, an image acquisition device 13, a dust removal device 14 and a light supplementing lighting device 15. Further, the conveyor belt monitoring system 10 in this embodiment may further include a travel gauge 16 and an audible and visual alarm 17.

The multi-channel terminal main control station 11 is in communication connection with the communication power substation 12, and the communication power substation 12 is respectively in electrical connection and communication connection with the image acquisition device 13, the dust removal device 14, the light supplement lighting device 15, the stroke metering device 16 and the acousto-optic alarm device 17 so as to control and transmit data to the image acquisition device 13, the dust removal device 14, the light supplement lighting device 15, the stroke metering device 16 and the acousto-optic alarm device 17. Optionally, the multichannel terminal master control station 11 may also be connected with an audible and visual alarm device 17.

As an alternative embodiment, the multi-channel terminal master control station 11 may be communicatively coupled to one or more communication power substations 12, each communication power substation 12 being located at a different conveyor belt test location.

The multi-channel terminal master Control station 11 is a remote terminal Control system, is an electronic device controlled by a microprocessor, And is a Supervisory system which is a distributed Control system or SCADA (Supervisory Control And Data Acquisition) system And controls a connection object through telemetric Data of a transmission system And slave messages.

The multi-channel terminal main control station 11 in this embodiment can perform comprehensive analysis on the received image information through program software, and provide the daily analysis processing result and the variation trend of the conveyor belt for the user. The user can also retrieve the damage state and the development trend at present or in the past at any time, and display or print out the detection report through the terminal.

Specifically, the communication power substation 12 in this embodiment adopts an intelligent multi-channel information bidirectional automatic interaction mode, and a modular multi-functional unit combination configuration, which is convenient for upgrading and updating. For an ethernet switch, the communication powered substation 12 may employ a high speed network switch 18 and a network I/O (input/output) control module. The communication power substation 12 collects, converts and transmits the data set signals of the image collection device 13 to the multi-channel terminal main control station 11.

Aiming at the communication connection mode of the multi-channel terminal main control station 11 and the communication power substation 12, when the installation distance between the multi-channel terminal main control station 11 and the communication power substation 12 is larger than 70m, a communication line adopts a network cable or optical fiber form; when the installation distance between the multi-channel terminal main control station 11 and the communication power substation 12 is less than 70 meters, the network cable connection is directly adopted. Specifically, please refer to fig. 2, fig. 2 is a schematic connection relationship diagram of a communication power substation according to an embodiment of the present application. The communication power substation 12 can be connected to the multichannel terminal master control station 11 through a network cable and an exchange 18.

Specifically, the communication power substation 12 is connected with the image acquisition device 13 through a power line and a gigabit network cable, connected with the supplementary lighting device 15 through an AC220V interface, connected with the dust removal device 14 through an AC 380V interface, and electrically connected with the stroke metering device 16 through a wire.

The image capture device 13 may include a surface damage image capture device 131 and a longitudinal tear image capture device 132.

The surface damage image acquisition device 131 is arranged below the lower conveying belt of the conveying belt and used for acquiring the surface damage undetermined image of the conveying belt. Since surface damage such as frictional damage, broken holes, and the like generally occurs on the carrying surface of the conveyor belt, the surface damage image capturing device 131 is disposed below the lower conveyor belt of the conveyor belt to accurately capture the surface damage condition of the conveyor belt. Alternatively, in this embodiment, the surface damage image capturing device 131 may be disposed above the upper conveying belt, in addition to below the lower conveying belt of the conveying belt.

The longitudinal tearing image acquisition device 132 is arranged below the upper conveying belt of the conveying belt and/or above the lower conveying belt of the conveying belt and is used for acquiring a longitudinal tearing pending image of the conveying belt. Since the tear length of the longitudinal tear of the web is typically longer, and often occurs earlier on the inner surface of the web where the friction with the drive mechanism is greater, the placement of the longitudinal tear image capture device 132 below the upper web of the web and/or above the lower web of the web facilitates the capture of images showing the longitudinal tear of the web.

The surface damage image acquisition device 131 and the longitudinal tearing image acquisition device 132 in the image acquisition device 13 adopt distributed units, can flexibly configure accessories such as lenses, storage elements and the like and corresponding software programs, are suitable for conveying belts with different width specifications, realize wide-distance non-contact nondestructive detection, and do not influence the normal production and operation of the conveying belts during detection.

Optionally, the surface damage image capturing device 131 and the longitudinal tearing image capturing device 132 in this embodiment may be configured as a single-camera configuration or a dual-camera configuration, the width of the conveyer belt suitable for the conveyer belt monitoring system 10 configured as a single-camera configuration is 800-.

Specifically, the surface damage image acquisition device 131 and the longitudinal tearing image acquisition device 132 may be L a-GC-02K05B cameras, using GigE data interface, horizontal resolution 2048, vertical resolution 2, line frequency 26khz, pixel volume 7.04 μmx7.04 μm.

Optionally, in order to ensure the image acquisition range, the inclination angle of the line camera of the surface damage image acquisition device 131 and the longitudinal tearing image acquisition device 132 in this embodiment is in the range of 0 ° to 90 °, and usually in the range of 40 ° to 70 °, so as to ensure that the maximum conveyor belt detection range of the single camera is 1200 mm.

Referring to fig. 3, fig. 3 is a schematic structural diagram of a light supplement lighting device according to an embodiment of the present disclosure.

In order to ensure the definition of the image acquired by the image acquisition device 13, the conveyor belt monitoring system 10 may further include a light supplement lighting device 15, the light supplement lighting device 15 is electrically connected to the communication power substation 12 through a wire, the light supplement lighting device 15 is disposed below the upper conveyor belt and/or below the lower conveyor belt, and the position of the light supplement lighting device 15 corresponds to the image acquisition area of the image acquisition device 13 on the conveyor belt. Further, there may be a plurality of light supplement lighting devices 15 for the surface damage image acquisition device 131 and the longitudinal tearing image acquisition device 132 for performing light supplement lighting on the image acquisition area.

The light supplement lighting device 15 is an L ED lighting device, and the L ED lighting device generally comprises a main lamp holder, a lamp panel, a mesh enclosure, a rotating shaft, lamp beads, a lead, a lamp holder, a lamp body, heat dissipation holes and the like.

Optionally, in order to improve the irradiation range of the supplementary lighting device 15, the supplementary lighting device 15 in this embodiment may further be provided with an adjusting seat, which can adjust the angle, height, and front and rear positions of the supplementary lighting device 15.

Referring to fig. 4, fig. 4 is a schematic structural diagram of a dust removing device according to an embodiment of the present disclosure. The dust removing device 14 comprises an air blowing pipeline 141 and an air port blower 142, wherein the air blowing pipeline 141 comprises an air blower 1411, a duct 1412 and an electromagnetic valve 1413, the electromagnetic valve is in communication connection with the communication power substation 12, and the multichannel terminal main control station starts or stops the air blower. When the blower is started, the purge gas enters the air port purge device 142 through the tunnel, and the surface or the periphery of the lens of the image acquisition device 13 and the surface or the periphery of the light emitting port of the light supplement lighting device 15 are purged by the air port purge device 142.

Alternatively, for safety, the purge gas may be an inert gas such as nitrogen or may be air subjected to a cleaning process such as filtration.

The air blower can be matched with an eddy fan, a centrifugal fan and an air compressor to be selected as air sources, and is more flexible and convenient.

Specifically, the air port blower 142 can be a dust removal air port, and mainly comprises a circular air inlet, a wide straight air channel, a splitter plate, a gradually narrowed air channel and a section of straight narrow air channel, wherein the width of the air channel is adjustable, so that the adjustable air outlet speed, the adjustable air volume and the adjustable air pressure are realized, and the air port blower has the characteristics of small air resistance and small pressure loss, and can be used for barrier-free isolation of harmful gas, dust and cold and hot air and removal of dust and dust.

Further, in order to enable the position of the image captured by the image capturing device 13 to be accurately positioned on the conveyor belt, the present embodiment also provides a stroke measuring device 16 at the conveyor belt, and a speed sensor inside the stroke measuring device is electrically connected with the communication power substation 12. When the conveyor belt monitoring system 10 is started, the speed sensor sends a pulse signal to the image acquisition device 13, so that the position of the conveyor belt corresponds to the image acquired by the image acquisition device 13, and the detection position can be accurately positioned.

The multi-channel terminal main control station 11 performs image processing on the image transmitted by the image acquisition device 13 to determine whether the conveyor belt is longitudinally torn or not, and when a display terminal interface is displayed, the display terminal interface can be marked by a designated color to visually prompt the longitudinal tearing and/or surface damage part.

The following explains the specific steps of image processing:

1 pretreatment of

Because the light of the image acquisition environment of the conveying belt is weak, the definition of the obtained image is often insufficient, the edge protrusion is poor, the upper conveying belt is in a curled and polished form, the brightness of the image acquired by the camera is uneven, and the interference on longitudinal tearing identification can be generated. Therefore, it is important for the multi-channel terminal master control station 11 to pre-process the image, and the purpose is to recover the real image of the surrounding environment.

1.1 setting effective area: the picture is actually a two-dimensional array, and only a part of the picture in the picture is interested in processing the picture, and for the sake of performance, a program can process the part of the picture information and ignore other parts. Through program selection, the selected corresponding width area can be set as an effective area of the picture. The picture in this area is only the header information of a newly created picture file, and no new picture is generated.

1.2, gray level processing: in the RGB model, if R ═ G ═ B, the color represents a gray scale color, where the value of R ═ G ═ B is called the gray scale value, so that each pixel of the gray scale image only needs one byte to store the gray scale value (also called the intensity value, luminance value), and the gray scale range is 0-255. In the application, the color image is grayed by adopting four methods, namely a component method, a maximum value method, an average value method or a weighted average method.

1.3 Gaussian filtering: the gaussian filter is used as a low-pass filter in image processing, which connects image frequency domain processing with time domain processing, and can filter low-frequency energy (such as noise) to play a role in image smoothing.

Generally speaking, Gaussian filtering is a process of weighted average of the whole image, and the value of each pixel is obtained by weighted average of the pixel and other pixel values in a neighborhood, and the Gaussian smoothing filter is used for scanning each pixel in the image by using a template (or convolution and mask), and replacing the value of a pixel point in the center of the template by using the weighted average gray value of the pixel in the neighborhood determined by the template.

1.4 image enhancement: the system adopts a histogram enhancement method to display the distribution situation of the pixel gray values in the image. In order to make the image become clear, increase contrast and highlight the image details, histogram equalization is to subject the image with non-uniform histogram distribution (e.g. most of the pixel gray scale is concentrated in a certain section) to a function transformation to make it a new image with uniform gray scale distribution, and the dynamic range of the gray scale histogram is expanded. The transformation function for the histogram equalization is not uniform, and is an integral of the histogram of the input image, i.e., a cumulative distribution function.

2, edge detection: edge detection is a fundamental problem in image processing and computer vision, and the purpose of edge detection is to identify points in a digital image where brightness changes are significant. Significant changes in image attributes typically reflect significant events and changes in the attributes. These include (i) discontinuities in depth, (ii) surface orientation discontinuities, (iii) material property variations, and (iv) scene lighting variations. Edge detection is a research area in image processing and computer vision, especially in feature extraction. The system adopts Canny operator to carry out edge detection.

The specific algorithm steps for solving the edge point by the Canny operator are as follows: (1) smoothing the image with a gaussian filter; (2) calculating gradient amplitude and direction by using first-order partial derivative finite difference; (3) carrying out non-maximum suppression on the gradient amplitude; (4) edges are detected and connected using a dual threshold algorithm.

3, image processing:

3.1, feature extraction: the method is characterized in that features of longitudinal tearing on the surface of the conveyor belt are extracted, wherein the longitudinal tearing is mostly represented by two main features with the tearing length being more than 1500mm and the tearing width being less than 20mm, so that a threshold value is established from two dimensions of the length and the width, and the features of the longitudinal tearing in a picture are extracted according to the threshold value. The surface damage has no special characteristics, and the program is processed according to the general image characteristics.

3.2 lesion merging: after feature extraction and identification, a plurality of damage points may be identified in one picture, damage in a plurality of pixels needs to be combined, and software combines the damage points into 1 feature region by setting a peripheral pixel threshold.

Meanwhile, when the length of the tearing damage exceeds the length of one picture, a 1-to-many relationship is established between the damage and the picture, and the damage and the picture are required to be corresponded, so that the characteristic damage points of a plurality of pictures are required to be merged.

3.1 result processing: subsequent treatment is required after the damage determination.

The method comprises the steps of marking and displaying damage on an interface, storing the damage picture in a hard disk, printing a report for follow-up, viewing historical records, storing results such as damage position information and the like in a database, establishing a damage sample database, sending an alarm instruction to an audible and visual alarm device to drive a buzzer and an L ED lamp if the damage exceeds a set threshold value, and establishing an alarm database.

After the image processing procedures of the three steps, the picture of the conveying belt with longitudinal tearing damage or surface damage is obtained, so that the detection of the longitudinal tearing and the surface damage of the conveying belt is completed.

In summary, the embodiment of the present application provides a conveyor belt monitoring system, which includes a longitudinal tearing image acquisition device, a light supplement lighting device, a dust removal device, a communication power substation and a multi-channel terminal master control station; the communication power substation is in communication connection with the multi-channel terminal main control station and is electrically connected with the longitudinal tearing image acquisition device, the light supplementing illumination device and the dust removal device; the longitudinal tearing image acquisition device is arranged below an upper conveying belt of the conveying belt and/or above a lower conveying belt of the conveying belt and is used for acquiring a longitudinal tearing undetermined image of the conveying belt; the light supplementing lighting device is arranged in a longitudinal tearing undetermined image acquisition area of the longitudinal tearing image acquisition device and used for providing a light source so as to improve the accuracy of the longitudinal tearing undetermined image acquired by the longitudinal tearing image acquisition device; the air opening of the dust removal device is arranged at the light outlet of the light supplement lighting device and/or the lens of the longitudinal tearing image acquisition device and is used for cleaning dust so as to eliminate the shielding influence of the dust on the light outlet and the lens; the communication power substation is arranged at the longitudinal tearing detection position of the conveying belt and used for controlling the longitudinal tearing image acquisition device, the light supplementing illumination device and the dust removal device to work; the multi-channel terminal main control station is arranged in a control machine room and used for sending a control command to the communication power substation to drive the longitudinal tearing image acquisition device, the light supplementing lighting device and the dust removal device to work and judging whether the conveyor belt is longitudinally torn or not based on the longitudinal tearing undetermined image acquired by the longitudinal tearing image acquisition device.

In the embodiments provided in the present application, it should be understood that the disclosed apparatus may be implemented in other manners. The apparatus embodiments described above are merely illustrative, and for example, the block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of devices according to various embodiments of the present application. In this regard, each block in the block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams, and combinations of blocks in the block diagrams, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.

In addition, functional modules in the embodiments of the present application may be integrated together to form an independent part, or each module may exist separately, or two or more modules may be integrated to form an independent part.

The above description is only an example of the present application and is not intended to limit the scope of the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

Claims

1. A conveyor belt monitoring system is characterized by comprising a longitudinal tearing image acquisition device, a light supplementing and illuminating device, a dust removal device, a communication power substation and a multi-channel terminal main control station; the communication power substation is in communication connection with the multi-channel terminal main control station and is electrically connected with the longitudinal tearing image acquisition device, the light supplementing illumination device and the dust removal device;

the longitudinal tearing image acquisition device is arranged below an upper conveying belt of the conveying belt and/or above a lower conveying belt of the conveying belt and is used for acquiring a longitudinal tearing undetermined image of the conveying belt;

the light supplementing lighting device is arranged in a longitudinal tearing undetermined image acquisition area of the longitudinal tearing image acquisition device and used for providing a light source so as to improve the accuracy of the longitudinal tearing undetermined image acquired by the longitudinal tearing image acquisition device;

the air opening of the dust removal device is arranged at the light outlet of the light supplement lighting device and/or the lens of the longitudinal tearing image acquisition device and is used for cleaning dust so as to eliminate the shielding influence of the dust on the light outlet and the lens;

the communication power substation is arranged at the longitudinal tearing detection position of the conveying belt and used for controlling the longitudinal tearing image acquisition device, the light supplementing illumination device and the dust removal device to work;

the multi-channel terminal main control station is arranged in a control machine room and used for sending a control command to the communication power substation to drive the longitudinal tearing image acquisition device, the light supplementing lighting device and the dust removal device to work and judging whether the conveyor belt is longitudinally torn or not based on the longitudinal tearing undetermined image acquired by the longitudinal tearing image acquisition device.

2. The conveyor belt monitoring system of claim 1, further comprising a surface damage image acquisition device disposed below the lower conveyor belt for acquiring a surface damage pending image of the conveyor belt;

the multi-channel terminal main control station is further used for judging whether the conveyor belt is damaged on the basis of the surface damage image to be determined acquired by the surface damage image acquisition device.

3. The conveyor belt monitoring system of claim 2, further comprising a travel metering device electrically connected to the communication power substation, the travel metering device being disposed above the lower conveyor belt, a friction roller of the travel metering device generating a sampling pulse with a surface friction of the lower conveyor belt for the longitudinal tear image acquisition device and/or the surface damage image acquisition device to determine a positional correspondence of an image acquisition area with the conveyor belt based on the sampling pulse.

4. The conveyor belt monitoring system of claim 3, wherein the supplemental lighting device is an L ED lighting device.

5. The system according to claim 3 or 4, wherein the supplementary lighting device further comprises an adjusting seat for adjusting the light irradiation angle.

6. The conveyor belt monitoring system of claim 2, wherein the longitudinal tear image capture device and the surface damage image capture device are line cameras, and the lens tilt angle adjustment range is 40 ° -70 °.

7. The conveyor belt monitoring system of claim 3, wherein the dust removing device further comprises a blower line and a tuyere purge, the blower line provides purge gas to the tuyere purge through an air outlet, and the tuyere purge is used for purging the light outlet and the lens.

8. The conveyor belt monitoring system according to claim 7, wherein the blowing pipeline comprises a blower, a duct and an electromagnetic valve, the electromagnetic valve is electrically connected with the communication power substation, the blower provides purge gas for the tuyere purge device through the duct, and the multichannel terminal main control station controls starting and stopping of the blower by controlling the electromagnetic valve.

9. The conveyor belt monitoring system of claim 1, further comprising an audible and visual alarm device electrically connected to the communication power substation.