CN111860135A - Identification method, system, equipment and medium for belt transfer point coal piling - Google Patents
Identification method, system, equipment and medium for belt transfer point coal piling Download PDFInfo
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Abstract
The disclosure relates to a method, a system, equipment and a medium for identifying belt transfer point coal pile, wherein the method comprises the following steps: a virtual height line is defined in a coal baffle plate area of a belt transfer point in advance; acquiring a real-time video image of the coal baffle area; determining the coal height of the coal blocking plate area according to the real-time video image; and judging whether coal piling occurs or not according to the relative position of the coal height and the virtual height line. The scheme that this disclosure provided can real-time supervision discernment pile coal height, in time discovers the belt pile coal phenomenon at belt operation process, reduces artifical timing correction operation to current detection sensor to ensure colliery operation safety, reduce the waste of manpower, time simultaneously.
Description
Technical Field
The disclosure relates to the field of belt conveyors, in particular to a method, a system, equipment and a medium for identifying coal piling at a belt transfer point.
Background
The existing belt coal piling identification is realized by various inductive sensors (such as mechanical sensors), and although the installation position is specified, the existing belt coal piling identification is easily influenced by coal flow to cause false alarm and frequent shutdown. Meanwhile, in order to avoid shutdown, field operating personnel have a throwing protection phenomenon, and potential safety hazards are brought to normal operation of the belt.
Disclosure of Invention
In order to solve the technical problems, the invention provides a method, a system, equipment and a medium for identifying belt transfer point coal piling.
According to a first aspect of the embodiments of the present disclosure, there is provided a method for identifying coal piling at a belt transfer point, including:
a virtual height line is defined in a coal baffle plate area of a belt transfer point in advance;
acquiring a real-time video image of the coal baffle area;
determining the coal height of the coal baffle area according to the real-time video image;
and judging whether coal piling occurs or not according to the relative position of the coal height and the virtual height line.
According to a second aspect of the embodiments of the present disclosure, there is provided a system for identifying belt transfer point coal pile, including:
the marking module is used for marking a virtual height line in a coal baffle plate area of a belt transfer point in advance;
the acquisition module is used for acquiring a real-time video image of the coal baffle area;
the determining module is used for determining the coal height of the coal baffle area according to the real-time video image;
and the judging module is used for judging whether coal piling occurs according to the relative position of the coal height and the virtual height line.
According to a third aspect of the embodiments of the present disclosure, there is provided a terminal device, including:
A processor; and
a memory having executable code stored thereon, which when executed by the processor, causes the processor to perform the method as described above.
According to a fourth aspect of embodiments of the present disclosure, there is provided a non-transitory machine-readable storage medium having stored thereon executable code, which when executed by a processor of an electronic device, causes the processor to perform the method as described above.
The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects: the artificial intelligence means real-time supervision discerns the coal piling height based on machine vision, in time discovers the belt coal piling phenomenon in the belt operation process, reduces artifical timing proofreading operation to current detection sensor to ensure colliery operation safety, reduce the waste of manpower, time simultaneously.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
FIG. 1 is a schematic flow diagram illustrating a method of identifying belt transfer point coal pile, according to an exemplary embodiment of the present disclosure;
FIG. 2 is a graph showing the variation of the height of the coal pile for different coal pile reasons;
FIG. 3 is a block diagram illustrating a belt transfer point coal pile identification system according to an exemplary embodiment of the present disclosure;
FIG. 4 is a schematic diagram illustrating a computing device, according to an example embodiment of the present disclosure.
Detailed Description
Preferred embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While the preferred embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
The terminology used in the present disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. As used in this disclosure and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.
It should be understood that although the terms "first," "second," "third," etc. may be used in this disclosure to describe various information, these information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present disclosure. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present disclosure, "a plurality" means two or more unless specifically limited otherwise.
Technical solutions of embodiments of the present disclosure are described in detail below with reference to the accompanying drawings.
Fig. 1 is a schematic flow chart illustrating a method for identifying belt transfer point coal pile according to an exemplary embodiment of the present disclosure.
Referring to fig. 1, the method includes:
and S11, defining a virtual height line in the area of the coal baffle plate at the belt transfer point in advance.
Specifically, the purpose of step S11 is to display in the real-time video image defined virtual height lines including a normal height line, a coal piling warning line and a coal piling shutdown line arranged from low to high.
This step can be achieved by two methods:
the first method is to flexibly determine a height line according to the proportion by utilizing the height of the coal baffle plate, and specifically comprises the following steps:
s111, identifying a coal blocking plate in the real-time video image; this step requires the use of a target detection algorithm to identify the coal deflector.
And S112, defining a virtual height line in the height direction of the coal baffle according to a preset proportion.
The second method is mainly based on the assumption that the coal height meets normal distribution when coal stacking occurs and coal stacking does not occur, and determines a virtual height line in a large sample statistics mode, and specifically comprises the following steps:
s113, collecting the coal material height when no coal piling occurs in the transfer point coal baffle plate area in advance as a normal height sample, and collecting the coal material height when coal piling occurs as a coal piling stopping height sample;
s114, removing abnormal values in the normal height sample and the coal piling stopping height sample by using a 3 sigma principle of normal distribution;
s115, estimating mathematical expectation and overall standard deviation corresponding to the normal height and the coal piling stopping height through the sample mean value and the sample standard deviation of the normal height sample and the coal piling stopping height sample after removing the abnormal value;
and S116, respectively determining the height ranges of the corresponding normal height line and the coal piling shutdown line according to the mathematical expectation and the overall standard deviation corresponding to the normal height and the coal piling shutdown height.
After determining the height ranges of the corresponding normal height line and the coal piling shutdown line, the coal piling shutdown line may be set between the normal height line and the coal piling shutdown line, and the specific manner may be set manually according to experience or set according to a certain height ratio, which is not limited in this embodiment.
And S12, acquiring a real-time video image of the coal baffle plate area.
In step S12 of the embodiment of the present invention, first, a real-time video image of the coal deflector on the transfer conveyor needs to be obtained, specifically, a high-definition (720p or more) camera may be used to shoot and align the position of the coal deflector of the transfer conveyor, and the real-time video image of the coal deflector on the transfer conveyor is collected in real time, which is to know the height of the coal material blocked by the coal deflector.
And S13, determining the coal height of the coal baffle area according to the real-time video image.
Firstly, the coal material can be detected by adopting a target detection method, namely, a convolutional neural network is utilized to detect the target (coal material). The convolutional neural network mainly comprises a convolutional layer, a region extraction network and a classifier. The convolutional layer is usually a deep convolutional neural network, and is used for converting an original image into a higher-level image feature with higher expressive ability and more abstract through a series of operations such as convolution, pooling and the like, and providing the higher-level image feature to the region extraction network and the classifier. The area extraction network generates a plurality of corresponding candidate frames according to a series of frame generation modes provided by the network based on the image characteristics extracted by convolution, and finally generates a certain number of areas of the coal at the feed inlet of the suspected reversed loader. And the classifier accurately analyzes the area of the coal material at the feed inlet of the suspected reversed loader according to the extracted image characteristics, and finally provides the coordinates of the characteristic area which accords with the coal blocks in the image so as to obtain whether the monitoring area has the coal or not. Of course, other target detection models can be adopted, and other neural networks can be trained by using the marked coal material photos, so that the neural networks have the capability of detecting the coal materials.
The marking frame of the coal material is calibrated by the target detection method, a coordinate system can be established in the real-time video image, the marking frame of the coal material is coordinated, and the coordinate of the highest point of the coal material can be determined by utilizing the coordinate system.
And S14, judging whether coal piling occurs according to the relative positions of the coal height and the virtual height line.
And judging whether coal piling occurs at the transfer point by comparing whether the coordinate of the highest point of the coal material exceeds the virtual height line.
Optionally, in this embodiment, the virtual height lines include a normal height line, a coal piling warning line and a coal piling shutdown line arranged from low to high;
the method further comprises the following steps:
s15, when the height of the coal material reaches the normal height line, controlling the action of the coal piling processing device; when the coal height reaches the coal piling alarm line, controlling an audible and visual alarm to give an alarm, controlling a belt upstream of the transfer point to stop, and controlling the coal piling processing device to continue to act; and when the height of the coal material reaches the coal piling shutdown line, controlling an audible and visual alarm to give an alarm, controlling the belt on the upstream and the downstream of the transfer point to be completely shut down, and informing an operator to process.
In the embodiment, the coal piling treatment device is combined, the coal piling self-identification and self-treatment process is realized, the belt outage rate is reduced, and the belt operation efficiency is improved.
Optionally, in this embodiment, the method further includes:
s16, presetting the corresponding relation between different change rates of the coal height and the coal piling reason;
and S17, when coal piling is judged to occur, determining a coal piling reason according to the change rate of the coal height in a preset time before the coal piling time and the corresponding relation.
Based on practical experience, the coal piling height change rates corresponding to different coal piling reasons are different, as shown in fig. 2, when the coal piling height changes as shown in a curve 1, the coal piling may be caused by large water coal; when the coal piling height changes as curve 2, the coal piling reason may be that the coal quantity of the belt at the upstream of the transfer point is large, the tail of the belt conveyer deviates, and the coal is not on the center line; when the coal pile height changes as shown in curve 3, the coal pile reason may be the blockage of foreign matters at the transfer point.
According to the embodiment, the coal piling reason can be intelligently analyzed according to the coal piling height change curve rate, the abnormal hidden danger of equipment is favorably solved, and the management level is improved.
Optionally, in this embodiment, the method further includes:
and S18, counting the times of coal piling at different times at the same transfer point and the times of coal piling at different transfer points at the same time.
In the embodiment, the problems in the belt management can be intelligently analyzed by counting the coal piling times at the same place and different times and the coal piling times at the same time and different places. For example, if coal piling occurs in the same place for multiple times, the transfer point has a lapping problem or is not installed properly, and the transfer point needs to be trimmed. If coal piling occurs at a plurality of places at the same time, the situation that foreign matters or water coal are large exists in a certain belt source is indicated, and the source needs to be searched for management penalty.
Corresponding to the embodiment of the application function implementation method, the disclosure also provides a system for identifying the belt transfer point coal pile, a terminal device and a corresponding embodiment.
Fig. 3 is a block diagram illustrating a belt transfer point coal pile identification system according to an exemplary embodiment of the present disclosure.
Referring to fig. 3, the system includes:
the marking module is used for marking a virtual height line in a coal baffle plate area of a belt transfer point in advance;
the acquisition module is used for acquiring a real-time video image of the coal baffle area;
the determining module is used for determining the coal height of the coal baffle area according to the real-time video image;
and the judging module is used for judging whether coal piling occurs according to the relative position of the coal height and the virtual height line.
With regard to the system in the above embodiment, the specific manner in which each module performs the operation has been described in detail in the embodiment related to the method, and will not be elaborated here.
FIG. 4 is a schematic diagram illustrating a computing device, according to an example embodiment of the present disclosure.
Referring to fig. 4, computing device 400 includes memory 410 and processor 420.
The Processor 420 may be a Central Processing Unit (CPU), other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic, discrete hardware components, etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
The memory 410 may include various types of storage units, such as system memory, Read Only Memory (ROM), and permanent storage. Wherein the ROM may store static data or instructions that are required by the processor 420 or other modules of the computer. The persistent storage device may be a read-write storage device. The persistent storage may be a non-volatile storage device that does not lose stored instructions and data even after the computer is powered off. In some embodiments, the persistent storage device employs a mass storage device (e.g., magnetic or optical disk, flash memory) as the persistent storage device. In other embodiments, the permanent storage may be a removable storage device (e.g., floppy disk, optical drive). The system memory may be a read-write memory device or a volatile read-write memory device, such as a dynamic random access memory. The system memory may store instructions and data that some or all of the processors require at runtime. Further, the memory 1010 may include any combination of computer-readable storage media, including various types of semiconductor memory chips (DRAM, SRAM, SDRAM, flash memory, programmable read-only memory), magnetic and/or optical disks, among others. In some embodiments, memory 410 may include a removable storage device that is readable and/or writable, such as a Compact Disc (CD), a read-only digital versatile disc (e.g., DVD-ROM, dual layer DVD-ROM), a read-only Blu-ray disc, an ultra-density optical disc, a flash memory card (e.g., SD card, min SD card, Micro-SD card, etc.), a magnetic floppy disc, or the like. Computer-readable storage media do not contain carrier waves or transitory electronic signals transmitted by wireless or wired means.
The memory 410 has stored thereon executable code that, when processed by the processor 420, may cause the processor 420 to perform some or all of the methods described above.
The aspects of the present disclosure have been described in detail above with reference to the accompanying drawings. In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments. Those skilled in the art should also appreciate that the acts and modules referred to in the specification are not necessarily required by the invention. In addition, it can be understood that steps in the method of the embodiment of the present disclosure may be sequentially adjusted, combined, and deleted according to actual needs, and modules in the device of the embodiment of the present disclosure may be combined, divided, and deleted according to actual needs.
Furthermore, the method according to the present disclosure may also be implemented as a computer program or computer program product comprising computer program code instructions for performing some or all of the steps of the above-described method of the present disclosure.
Alternatively, the present disclosure may also be embodied as a non-transitory machine-readable storage medium (or computer-readable storage medium, or machine-readable storage medium) having stored thereon executable code (or a computer program, or computer instruction code) that, when executed by a processor of an electronic device (or computing device, server, or the like), causes the processor to perform some or all of the various steps of the above-described method according to the present disclosure.
Those of skill would further appreciate that the various illustrative logical blocks, modules, circuits, and algorithm steps described in connection with the disclosure herein may be implemented as electronic hardware, computer software, or combinations of both.
The flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems and methods according to various embodiments of the present disclosure. In this regard, each block in the flowchart or 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/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, 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.
Having described embodiments of the present disclosure, the foregoing description is intended to be exemplary, not exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen in order to best explain the principles of the embodiments, the practical application, or improvements made to the technology in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.
Claims (10)
1. A belt transfer point coal piling identification method is characterized by comprising the following steps:
a virtual height line is defined in a coal baffle plate area of a belt transfer point in advance;
acquiring a real-time video image of the coal baffle area;
determining the coal height of the coal baffle area according to the real-time video image;
and judging whether coal piling occurs or not according to the relative position of the coal height and the virtual height line.
2. The method for identifying belt transfer point coal piling of claim 1, wherein the virtual height line comprises a normal height line, a coal piling warning line and a coal piling shutdown line which are arranged from low to high.
3. The method for identifying coal piling at a belt transfer point as claimed in claim 1, wherein the step of defining a virtual height line in a coal baffle plate area at the belt transfer point in advance specifically comprises:
identifying a coal deflector in the real-time video image;
and a virtual height line is defined in the height direction of the coal baffle according to a preset proportion.
4. The method for identifying coal piling at a belt transfer point as claimed in claim 2, wherein a virtual height line is defined in a coal baffle plate area of the belt transfer point, and the method specifically comprises the following steps:
the method comprises the steps of collecting the coal material height when no coal stacking occurs in a transfer point coal baffle plate area in advance as a normal height sample, and collecting the coal material height when coal stacking occurs as a coal stacking stop height sample;
removing abnormal values in the normal height sample and the coal piling stopping height sample by using a 3 sigma principle of normal distribution;
estimating mathematical expectations and overall standard deviations corresponding to the normal height and the coal piling stopping height by sample means and sample standard deviations of the normal height samples and the coal piling stopping height samples after the abnormal values are removed, respectively;
the height ranges of the respective normal height line and coal pile shut-down line are determined from the mathematical expectations and the overall standard deviation corresponding to the normal height and coal pile shut-down height, respectively.
5. The method for identifying belt transfer point coal pile according to claim 2, further comprising:
when the height of the coal material reaches the normal height line, controlling the action of the coal piling treatment device;
when the coal height reaches the coal piling alarm line, controlling an audible and visual alarm to give an alarm, controlling a belt upstream of the transfer point to stop, and controlling the coal piling processing device to continue to act;
and when the height of the coal material reaches the coal piling shutdown line, controlling an audible and visual alarm to give an alarm, controlling the belt on the upstream and the downstream of the transfer point to be completely shut down, and informing an operator to process.
6. The method for identifying belt transfer point coal pile according to claim 1, further comprising:
presetting the corresponding relation between different change rates of the coal material height and the coal piling reason;
and when the coal piling is judged to occur, determining the coal piling reason according to the change rate of the coal height in the preset time before the coal piling occurrence time and the corresponding relation.
7. The method for identifying coal piling at belt transfer points as claimed in any one of claims 1 to 6, further comprising:
and counting the times of coal piling at different times at the same transfer point and the times of coal piling at different transfer points at the same time.
8. A belt transfer point coal pile identification system is characterized by comprising:
the marking module is used for marking a virtual height line in a coal baffle plate area of a belt transfer point in advance;
the acquisition module is used for acquiring a real-time video image of the coal baffle area;
the determining module is used for determining the coal height of the coal baffle area according to the real-time video image;
and the judging module is used for judging whether coal piling occurs according to the relative position of the coal height and the virtual height line.
9. A terminal device, comprising:
a processor; and
a memory having executable code stored thereon, which when executed by the processor, causes the processor to perform the method of any one of claims 1-6.
10. A non-transitory machine-readable storage medium having stored thereon executable code, which when executed by a processor of an electronic device, causes the processor to perform the method of any one of claims 1-6.
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| CN114021983A (en) * | 2021-11-05 | 2022-02-08 | 宁夏广天夏电子科技有限公司 | Three-dimensional running monitoring method and system |
| CN114194851A (en) * | 2021-11-12 | 2022-03-18 | 中国煤炭科工集团太原研究院有限公司 | Coal mine underground automatic loading and unloading coal linkage control method and equipment |
| CN115359638A (en) * | 2022-08-26 | 2022-11-18 | 山东千颐科技有限公司 | Chute coal piling alarm device |
| CN118419520A (en) * | 2024-05-30 | 2024-08-02 | 山东开创电气有限公司 | Coal pile positioning and identifying method for coal mine conveyor belt surface |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114021983A (en) * | 2021-11-05 | 2022-02-08 | 宁夏广天夏电子科技有限公司 | Three-dimensional running monitoring method and system |
| CN114194851A (en) * | 2021-11-12 | 2022-03-18 | 中国煤炭科工集团太原研究院有限公司 | Coal mine underground automatic loading and unloading coal linkage control method and equipment |
| CN114194851B (en) * | 2021-11-12 | 2023-08-25 | 中国煤炭科工集团太原研究院有限公司 | Automatic coal loading and unloading linkage control method and equipment for underground coal mine |
| CN115359638A (en) * | 2022-08-26 | 2022-11-18 | 山东千颐科技有限公司 | Chute coal piling alarm device |
| CN118419520A (en) * | 2024-05-30 | 2024-08-02 | 山东开创电气有限公司 | Coal pile positioning and identifying method for coal mine conveyor belt surface |
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