Method and device for detecting deviation of coal conveying belt and electronic equipment

Abstract

The embodiment of the present application provides a deviation detection method for a coal conveying belt, comprising the following steps: acquiring exposed area images of a single set of left and right idler rollers on both sides of the coal conveying belt; comparing the width of the exposed areas of the single set of left and right idler rollers on both sides of the coal conveying belt; and judging whether the coal conveying belt deviates. The deviation detection method for the coal conveying belt provided by the embodiment of the present application can automatically detect the deviation of the coal conveying belt in real time in a non-contact manner. The embodiment of the present application further provides a deviation detection device for a coal conveying belt and an electronic device.

Description

TECHNICAL FIELD

[0001] Embodiments of the present application relate to the technical field of detection devices, in particular to a method and device for detecting deviation of a coal conveying belt and an electronic device. BACKGROUND

[0002] Thermal power generation still accounts for a large proportion of power production. In the power generation process of a thermal power plant, coal needs to be conveyed to a thermal power generator through a coal conveying belt. Therefore, the coal conveying belt affects the normal operation of the thermal power plant.

[0003] Deviation of the coal conveying belt is a common fault of the coal conveying belt machine. When the coal conveying belt deviates, it is easy to cause coal to be spilled, and in severe cases, it can cause damage to the parts of the machine. Common automatic detection equipment for belt deviation mainly includes contact mechanical sensors. Since the mechanical sensor needs to physically contact the belt, foreign matter on the edge of the belt can cause the mechanical sensor to misjudge. During long-term operation of the belt, the edge of the belt can be worn by the mechanical sensor. In addition, if the belt shakes, the mechanical sensor can misjudge. Moreover, the mechanical sensor is installed at a high position, and the operator needs to climb to maintain it, which poses a certain safety hazard. SUMMARY

[0004] The main purpose of the embodiments of the present application is to provide a method and device for detecting deviation of a coal conveying belt and an electronic device, which can automatically detect the deviation of the coal conveying belt in real time in a non-contact manner.

[0005] To achieve the above purpose, in a first aspect, the embodiments of the present application provide a method for detecting deviation of a coal conveying belt, comprising the following steps:

[0006] Obtaining an exposed area image of a single set of left and right idlers on both sides of the coal conveying belt;

[0007] Comparing the widths of the exposed areas of the single set of left and right idlers on both sides of the coal conveying belt; and

[0008] Determining whether the coal conveying belt deviates.

[0009] Further, the determination of whether the coal conveying belt deviates comprises:

[0010] Determining whether the coal conveying belt deviates according to the following formula:

[0011]

[0012] wherein max(x, y) represents the maximum value of the widths of the exposed areas of the single set of left and right idlers on both sides of the coal conveying belt, min(x, y) represents the minimum value of the widths of the exposed areas of the single set of left and right idlers on both sides of the coal conveying belt, I thA threshold for judging whether the coal conveying belt is deviated.

[0013] Further, the comparison of the width of the circumscribed rectangle of the exposed area of the single set of left idler rollers and right idler rollers on both sides of the coal conveying belt comprises:

[0014] The comparison of the width of the circumscribed rectangle of the exposed area of the single set of left idler rollers and right idler rollers on both sides of the coal conveying belt comprises:

[0015] Further, before the comparison of the width of the circumscribed rectangle of the exposed area of the single set of left idler rollers and right idler rollers on both sides of the coal conveying belt, further comprising:

[0016] According to the exposed area image of the single set of left idler rollers and right idler rollers on both sides of the coal conveying belt, the circumscribed rectangle of the exposed area of the single set of left idler rollers and right idler rollers on both sides of the coal conveying belt is obtained.

[0017] Further, the circumscribed rectangle of the exposed area of the single set of left idler rollers and right idler rollers on both sides of the coal conveying belt is obtained according to the exposed area image of the single set of left idler rollers and right idler rollers on both sides of the coal conveying belt, comprising:

[0018] The exposed area image of the single set of left idler rollers and right idler rollers on both sides of the coal conveying belt is input into an image segmentation model to obtain the circumscribed rectangle of the exposed area of the single set of left idler rollers and right idler rollers on both sides of the coal conveying belt.

[0019] Further, the exposed area image of the single set of left idler rollers and right idler rollers on both sides of the coal conveying belt comprises:

[0020] A single frame image is obtained from the video of the coal conveying belt; and

[0021] The exposed area image of the single set of left idler rollers and right idler rollers on both sides of the coal conveying belt is obtained from the single frame image.

[0022] Further, after the judgment of whether the coal conveying belt is deviated, further comprising:

[0023] If yes, an alarm signal of the deviation of the coal conveying belt is sent.

[0024] In a second aspect, the embodiments of the present application provide a deviation detection device for a coal conveying belt, comprising:

[0025] An image acquisition module is configured to acquire the exposed area image of the single set of left idler rollers and right idler rollers on both sides of the coal conveying belt;

[0026] A width comparison module is configured to compare the width of the exposed area of the single set of left idler rollers and right idler rollers on both sides of the coal conveying belt; and

[0027] A deviation judgment module is configured to judge whether the coal conveying belt is deviated.

[0028] In a third aspect, an electronic device is provided, which includes a memory, a processor, and a computer program stored in the memory and capable of running on the processor, and the processor is configured to implement the deviation detection method according to any one of the above aspects when running the program.

[0029] In a fourth aspect, a computer readable storage medium is provided, which stores a computer program, and the computer program is configured to implement the deviation detection method according to any one of the above aspects.

[0030] The computer readable storage medium stores a computer program, and the computer program is configured to implement the deviation detection method according to any one of the above aspects.

[0031] Compared with the existing detection method using mechanical sensors, the deviation detection method for the coal conveying belt provided in the embodiments of the present application can obtain the exposed area images of the single set of left and right idlers on both sides of the coal conveying belt, and compare the widths of the exposed areas of the single set of left and right idlers on both sides of the coal conveying belt, so as to determine whether the coal conveying belt deviates. Therefore, the deviation detection method for the coal conveying belt provided in the embodiments of the present application uses a non-contact visual method to automatically monitor the deviation of the coal conveying belt in real time, avoids the problems of the traditional contact mechanical sensors, is easy to maintain, does not cause adverse effects such as belt shaking or belt wear caused by the coal conveying belt, and is not affected by foreign matters on the edge of the coal conveying belt. BRIEF DESCRIPTION OF DRAWINGS

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the embodiments or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from the structures shown in the drawings without creative labor.

[0033] Figure 1 A flowchart of the deviation detection method for the coal conveying belt provided in the embodiments of the present application is shown in the figure.

[0034] Figure 2a And Figure 2b An application scenario diagram of the deviation detection method for the coal conveying belt provided in the embodiments of the present application is shown in the figure.

[0035] Figure 3 A structural block diagram of the deviation detection device for the coal conveying belt provided in the embodiments of the present application is shown in the figure.

[0036] Figure 4 A structural diagram of the electronic device provided in the embodiments of the present application is shown in the figure.

[0037] The objectives, functional features and advantages of the present application will be further described with reference to the embodiments in combination with the accompanying drawings. DETAILED DESCRIPTION

[0038] The technical solutions in the embodiments of the present application will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative effort fall within the protection scope of the present application.

[0039] It should be noted that all the directionality indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative position relationship, movement condition, etc. between components in a certain posture (as shown in the drawings), and if the certain posture changes, the directionality indications also change accordingly.

[0040] In the present application, unless otherwise explicitly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense, for example, "fixation" can be fixed connection, or detachable connection, or integral; can be mechanical connection, or electrical connection; can be direct connection, or indirect connection through an intermediate medium; can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For a person of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0041] In addition, the description such as "first", "second", etc. in the present application is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing throughout the text is that it includes three parallel solutions, taking "A and / or B" as an example, which includes A solution, or B solution, or A and B solutions at the same time. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the fact that a person of ordinary skill in the art can realize it, and when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope claimed by the present application.

[0042] Figure 1 is a flow chart of a deviation detection method for a coal conveying belt according to the embodiments of the present application. As shown in Figure 1 The deviation detection method for a coal conveying belt provided by the embodiments of the present application includes the following steps:

[0043] S101: Obtain the exposed area image of a single set of left and right idler rollers on both sides of the coal conveying belt.

[0044] S102: Compare the width of the exposed area of a single set of left and right idler rollers on both sides of the coal conveying belt; and

[0045] S103: Determine whether the coal conveying belt is running off-center.

[0046] Specifically, a camera is usually arranged directly above the coal conveying belt, and the camera is used to monitor the running condition of the coal conveying belt. The picture or image captured by the camera will contain many idler roller sets. Since the coal conveying belt is thick and heavy, and is made of a large number of steel wires, as shown in FIG. 1, when the coal conveying belt runs off-center at a certain position, the deviation of the coal conveying belt will be shown in the idler roller sets near the position. Therefore, in one camera, it is only necessary to detect whether an idler roller set is running off-center. Figure 2b

[0047] Compared with the existing detection method using mechanical sensors, the off-center detection method for the coal conveying belt provided in the embodiments of the present application can obtain the exposed area image of a single set of left and right idler rollers on both sides of the coal conveying belt, compare the width of the exposed area of a single set of left and right idler rollers on both sides of the coal conveying belt, and thus determine whether the coal conveying belt is running off-center. Therefore, the off-center detection method for the coal conveying belt provided in the embodiments of the present application uses a non-contact visual method to automatically monitor the off-center condition of the coal conveying belt in real time, avoids the problems of the traditional contact mechanical sensors, is easy to maintain, does not adversely affect the coal conveying belt, for example, does not cause the belt to shake or wear the belt, and is not affected by foreign matter on the edge of the coal conveying belt.

[0048] Further, referring to Figure 2a and Figure 2b in some embodiments of the present application, the determination of whether the coal conveying belt is running off-center comprises:

[0049] The determination of whether the coal conveying belt is running off-center is made according to the following formula:

[0050]

[0051] wherein max(x, y) represents the maximum value of the width of the exposed area of a single set of left and right idler rollers on both sides of the coal conveying belt, min(x, y) represents the minimum value of the width of the exposed area of a single set of left and right idler rollers on both sides of the coal conveying belt, I th is a threshold value for determining whether the coal conveying belt is running off-center.

[0052] ​The method for detecting deviation of a coal conveying belt provided by the embodiments of the present application can accurately determine whether the coal conveying belt deviates, thereby automatically monitoring the deviation of the coal conveying belt in real time.

[0053] Further, in some embodiments of the present application, the comparison of the width of the circumscribed rectangle of the exposed area of the single set of left and right idlers on both sides of the coal conveying belt comprises:

[0054] The comparison of the width of the circumscribed rectangle of the exposed area of the single set of left and right idlers on both sides of the coal conveying belt comprises:

[0055] Specifically, in image processing, the circumscribed rectangle is an important concept, which relates to how to effectively extract and process a specific area in an image. The circumscribed rectangle can be divided into a minimum circumscribed rectangle and a minimum circumscribed convex hull, wherein the minimum circumscribed rectangle usually refers to the minimum area rotating rectangle around a point set or an object in an image.

[0056] The exposed area of the single set of left and right idlers on both sides of the coal conveying belt is usually irregular in shape in the captured image, and the circumscribed rectangle of the exposed area of the single set of left and right idlers on both sides of the coal conveying belt refers to the minimum area rotating rectangle around the exposed area of the single set of left and right idlers on both sides of the coal conveying belt. Therefore, the comparison of the width of the exposed area of the single set of left and right idlers on both sides of the coal conveying belt can be realized by comparing the width of the circumscribed rectangle of the exposed area of the single set of left and right idlers on both sides of the coal conveying belt, thereby further reducing the complexity of the algorithm and reducing the calculation amount.

[0057] Further, in some embodiments of the present application, before the comparison of the width of the circumscribed rectangle of the exposed area of the single set of left and right idlers on both sides of the coal conveying belt, the method further comprises:

[0058] According to the exposed area image of the single set of left and right idlers on both sides of the coal conveying belt, the circumscribed rectangle of the exposed area of the single set of left and right idlers on both sides of the coal conveying belt is obtained.

[0059] That is, before the comparison of the width of the circumscribed rectangle of the exposed area of the single set of left and right idlers on both sides of the coal conveying belt, the exposed area image of the single set of left and right idlers on both sides of the coal conveying belt needs to be subjected to object extraction to obtain the circumscribed rectangle of the exposed area of the single set of left and right idlers on both sides of the coal conveying belt, thereby facilitating subsequent determination operations.

[0060] Further, in some embodiments of the present application, the obtaining of the circumscribed rectangle of the exposed area of the single set of left and right idlers on both sides of the coal conveying belt according to the exposed area image of the single set of left and right idlers on both sides of the coal conveying belt comprises:

[0061] The exposed area image of the single set of left and right idler rollers on both sides of the coal conveying belt is input into an image segmentation model to obtain the circumscribed rectangle of the exposed area of the single set of left and right idler rollers on both sides of the coal conveying belt.

[0062] Specifically, the image segmentation model in image processing plays an important role in the field of computer vision. Image segmentation is the process of dividing an image into different regions or objects, which provides a basis for many applications such as object detection, image recognition, etc. Therefore, inputting the exposed area image of the single set of left and right idler rollers on both sides of the coal conveying belt into the image segmentation model can quickly obtain the circumscribed rectangle of the exposed area of the single set of left and right idler rollers on both sides of the coal conveying belt, thereby facilitating subsequent determination operations.

[0063] Further, in some embodiments of the present application, the exposed area image of the single set of left and right idler rollers on both sides of the coal conveying belt comprises:

[0064] obtaining a single frame image from the video of the coal conveying belt; and

[0065] respectively, from the single frame image, the exposed area image of the single set of left and right idler rollers on both sides of the coal conveying belt is cut off.

[0066] Specifically, the camera above the coal conveying belt usually continuously shoots the running condition of the coal conveying belt. If the camera shoots the coal conveying belt in the form of a video, when the exposed area image of the single set of left and right idler rollers on both sides of the coal conveying belt is needed, a single frame image is first obtained from the video of the coal conveying belt, and then the exposed area image of the single set of left and right idler rollers on both sides of the coal conveying belt is cut off from the single frame image, thereby providing a basis for subsequent determination operations.

[0067] Further, in some embodiments of the present application, after the determination of whether the coal conveying belt is deviated, further comprising:

[0068] If yes, an alarm signal of the deviation of the coal conveying belt is sent.

[0069] That is, if it is determined that the coal conveying belt is deviated, an alarm signal is immediately sent, and the deviation position of the coal conveying belt is marked on the display screen for maintenance personnel to handle in time, thereby avoiding adverse effects on production operations.

[0070] Figure 3 is the structure block diagram of the deviation detection device 200 for the coal conveying belt of the embodiments of the present application. As shown in Figure 3 the deviation detection device 200 for the coal conveying belt of the embodiments of the present application comprises an image acquisition module 210, a width comparison module 220 and a deviation judgment module 230, wherein:

[0071] Image acquisition module 210 is used to acquire images of the exposed areas of a single set of left and right idlers on both sides of the coal conveyor belt;

[0072] Width comparison module 220 is used to compare the width of the exposed areas of a single set of left and right idlers on both sides of the coal conveyor belt; and

[0073] The belt misalignment detection module 230 is used to determine whether the coal conveyor belt is misaligned.

[0074] Compared to existing detection devices that utilize mechanical sensors, the belt misalignment detection device for coal conveyors provided in this application acquires images of the exposed areas of a single set of left and right idlers on both sides of the coal conveyor belt and compares the widths of these exposed areas to determine whether the coal conveyor belt is misaligned. Therefore, the belt misalignment detection device for coal conveyors provided in this application uses a non-contact visual method to automatically monitor the belt misalignment in real time, avoiding the problems of traditional contact-type mechanical sensors. It is simple to maintain, does not cause adverse effects on the coal conveyor belt, such as belt shaking or belt wear, and is not affected by foreign objects on the edge of the coal conveyor belt.

[0075] It should be noted that the specific implementation of the abnormal noise positioning device for belt conveyor rollers in this application embodiment is similar to the specific implementation of the video generation method in this application embodiment. Please refer to the description in the method section for details, which will not be repeated here.

[0076] Figure 4 This is a schematic diagram of the structure of the electronic device 300 according to an embodiment of this application.

[0077] like Figure 4 As shown, the electronic device 300 includes a central processing unit (CPU) 301, which can perform various appropriate actions and processes according to a program stored in a read-only memory (ROM) 302 or a program loaded from the storage section 302 into a random access memory (RAM) 303. The RAM 303 also stores various programs and data required for the operation of the electronic device 300. The CPU 301, ROM 302, and RAM 303 are interconnected via a bus 304. An input / output (I / O) interface 305 is also connected to the bus 304.

[0078] The following components are connected to the I / O interface 305: an input part 306 including a keyboard, a mouse, etc.; an output part 307 including a display such as a cathode ray tube (CRT), a liquid crystal display (LCD), etc., and a speaker, etc.; a storage part 308 including a hard disk, etc.; and a communication part 309 including a network interface card such as a LAN card, a modem, etc. The communication part 309 performs communication processing via a network such as the Internet. A drive 310 is also connected to the I / O interface 305 as necessary. A removable media 311 such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, etc. is attached to the drive 310 as necessary, so that a computer program read out therefrom is installed in the storage part 308 as necessary.

[0079] In particular, according to embodiments of the present application, the processes described above with reference to the flowcharts can be implemented as a computer software program. For example, embodiments of the present application include a computer program product comprising a computer program carried on a machine-readable medium, the computer program containing program code for executing the methods illustrated by the flowcharts. In such embodiments, the computer program can be downloaded and installed from a network by the communication part 309, and / or installed from the removable media 311. When the computer program is executed by the central processing unit (CPU) 301, the above-described functions defined in the electronic device of the present application are executed.

[0080] It should be noted that the computer readable medium shown in the present application can be a computer readable signal medium or a computer readable storage medium or any combination of the two. The computer readable storage medium may, for example, be, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor device, apparatus or device, or any combination of the above. More specific examples of the computer readable storage medium can include, but are not limited to, an electrical connection having one or more wires, a portable computer diskette, 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 disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above.

[0081] In this application, a computer readable storage medium can be any tangible medium that can retain, or store program codes for use by or in connection with an instruction execution electronic device, apparatus, or device. In this application, a computer readable signal medium can include a computer readable program code propagated in or on a carrier medium, which can be based on any suitable medium, including but not limited to electronic, magnetic, optical, electromagnetic, infrared, or any suitable combination of the above. The computer readable medium can also be any computer readable medium other than a computer readable storage medium where the computer readable program codes are propagated in or on the computer readable medium, which can be based on any suitable medium, including but not limited to electronic, magnetic, optical, electromagnetic, infrared, or any suitable combination of the above. The computer readable program codes propagated in or on the computer readable medium can be transmitted using any suitable medium, including but not limited to wireless, wireline, optical cable, RF, or any suitable combination of the above.

[0082] The flowcharts and block diagrams in the drawings illustrate the architecture, functionality, and operation of possible implementations of processing receiving devices, methods, and computer program products according to various embodiments of the present application. In this regard, each block in the flowcharts or block diagrams can represent a module, a segment, or a portion of codes, which comprises one or more executable instructions for implementing the specified logical functions. It should also be noted that in some alternative implementations, the functions noted in the blocks can occur out of the order noted in the figures. For example, two blocks noted in succession can in fact be executed substantially concurrently or in the reverse order, depending on the functionality involved. It will also be noted that each block in the block diagrams and / or flowcharts, and combinations of blocks in the block diagrams and / or flowcharts, can be implemented by dedicated hardware-based electronic devices, or can be implemented with a combination of dedicated hardware-based electronic devices and computer instructions.

[0083] The units or modules described in the embodiments of the present application can be implemented in the form of software, or can be implemented in the form of hardware. The described units or modules can also be arranged in a processor for executing the programs to implement the coal conveying belt deviation detection method, including the following steps:

[0084] Obtaining the exposed area image of the left and right idler rolls on the two sides of the coal conveying belt;

[0085] Comparing the width of the exposed area of the left and right idler rolls on the two sides of the coal conveying belt; and

[0086] Determining whether the coal conveying belt is deviated.

[0087] As another aspect, the present application also provides a computer readable storage medium, which can be included in the electronic device described in the above embodiments, or can exist independently without being assembled into the electronic device. The computer readable storage medium stores one or more programs, and when the programs are used by one or more processors to execute the method for deviation detection of a coal conveying belt described in the present application, the method comprises the following steps:

[0088] obtaining an exposed area image of a single set of left and right idler rollers on both sides of the coal conveying belt;

[0089] comparing the width of the exposed area of the single set of left and right idler rollers on both sides of the coal conveying belt; and

[0090] judging whether the coal conveying belt is deviated.

[0091] As another aspect, the present application also provides a computer program product, which can be included in the electronic device described in the above embodiments, or can exist independently without being assembled into the electronic device. The computer program product stores one or more programs, and when the programs are used by one or more processors to execute the method for deviation detection of a coal conveying belt described in the present application, the method comprises the following steps:

[0092] obtaining an exposed area image of a single set of left and right idler rollers on both sides of the coal conveying belt;

[0093] comparing the width of the exposed area of the single set of left and right idler rollers on both sides of the coal conveying belt; and

[0094] judging whether the coal conveying belt is deviated.

[0095] The above description is only the preferred embodiments of the present application, and does not limit the patent scope of the present application. Any equivalent structural transformation made according to the content of the present application specification and drawings, or direct / indirect application in other related technical fields is included in the patent protection scope of the present application.

Claims

1. A method for detecting misalignment of a coal conveyor belt, characterized by, The method comprises the following steps: obtaining the exposed area images of the left and right groups of idler rollers on both sides of the coal conveying belt; obtaining the circumscribed rectangles of the exposed areas of the left and right groups of idler rollers on both sides of the coal conveying belt according to the exposed area images of the left and right groups of idler rollers on both sides of the coal conveying belt; comparing the widths of the circumscribed rectangles of the exposed areas of the left and right groups of idler rollers on both sides of the coal conveying belt; comparing the widths of the circumscribed rectangles of the exposed areas of the left and right groups of idler rollers on both sides of the coal conveying belt; and judging whether the coal conveying belt is deviated according to the following formula: Wherein, max(x, y) represents the maximum value of the width of the circumscribed rectangle of the exposed area of the single set of left and right idlers on both sides of the coal conveying belt, min(x, y) represents the minimum value of the width of the circumscribed rectangle of the exposed area of the single set of left and right idlers on both sides of the coal conveying belt, I th is a threshold value for judging whether the coal conveying belt is deviated.

2. The deviation detection method for a coal conveying belt according to claim 1, characterized by, The step of obtaining the circumscribed rectangles of the exposed areas of the left and right groups of idler rollers on both sides of the coal conveying belt according to the exposed area images of the left and right groups of idler rollers on both sides of the coal conveying belt comprises: inputting the exposed area images of the left and right groups of idler rollers on both sides of the coal conveying belt into an image segmentation model to obtain the circumscribed rectangles of the exposed areas of the left and right groups of idler rollers on both sides of the coal conveying belt.

3. The method for deviation detection of a coal conveying belt according to claim 1, wherein The step of obtaining the exposed area images of the left and right groups of idler rollers on both sides of the coal conveying belt comprises: obtaining a single frame image from a video of the coal conveying belt; and respectively extracting the exposed area images of the left and right groups of idler rollers on both sides of the coal conveying belt from the single frame image.

4. The method for deviation detection of a coal conveying belt according to claim 1, wherein After the step of judging whether the coal conveying belt is deviated, the method further comprises: if yes, issuing an alarm signal for the deviation of the coal conveying belt.

5. A misalignment detection device for a coal conveyor belt, characterized by, The method comprises: an image obtaining module for obtaining the exposed area images of the left and right groups of idler rollers on both sides of the coal conveying belt; a circumscribed rectangle obtaining module for obtaining the circumscribed rectangles of the exposed areas of the left and right groups of idler rollers on both sides of the coal conveying belt according to the exposed area images of the left and right groups of idler rollers on both sides of the coal conveying belt; a width comparing module for comparing the widths of the circumscribed rectangles of the exposed areas of the left and right groups of idler rollers on both sides of the coal conveying belt; and a deviation judging module for judging whether the coal conveying belt is deviated according to the following formula: The computer readable storage medium stores a computer program for implementing the deviation detection method according to any one of claims 1-4. Wherein, max(x, y) represents the maximum value of the width of the circumscribed rectangle of the exposed area of the single set of left and right idlers on both sides of the coal conveying belt, min(x, y) represents the minimum value of the width of the circumscribed rectangle of the exposed area of the single set of left and right idlers on both sides of the coal conveying belt, I th is a threshold value for judging whether the coal conveying belt is deviated.

6. An electronic device, comprising: The computer readable storage medium stores a computer program for implementing the deviation detection method according to any one of claims 1-4.

7. A computer readable storage medium characterized by ​

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