A coal mine area security management system based on video surveillance

Abstract

The present invention belongs to the field of coal mine security, relates to data analysis technology, and is used to solve the problem that the coal mine area security management system in the prior art cannot meet the monitoring needs of the dynamically changing coal mine working environment. Specifically, it is a coal mine area security management system based on video monitoring, including a video monitoring subsystem and an accident analysis subsystem, the video monitoring subsystem includes a video data acquisition module, a video data processing module and a monitoring analysis module; the accident analysis subsystem includes an accident analysis module and a layout analysis module, and the video data processing module is used to process the on-site video images of the coal mine area; the present invention can automatically identify and extract abnormal conditions in the coal mine area, realize automatic monitoring and early warning of abnormal conditions in the coal mine area, reduce the work pressure of management personnel, and avoid the problems of fatigue omissions, untimely early warning, etc. caused by manual supervision.

Description

Technical Field

[0001] The invention belongs to the field of coal mine security and relates to data analysis technology, and specifically is a coal mine area security management system based on video monitoring. Background Art

[0002] The coal mine area security management system is a comprehensive system that integrates video surveillance technology, security technology and information management technology. The main purpose of this system is to improve the safety prevention capabilities of the coal mine area, prevent and reduce the occurrence of safety accidents, and ensure the safety and stability of coal mine production.

[0003] The coal mine area security management system in the existing technology can only provide security warnings based on video surveillance data. However, when a safety accident occurs, it is unable to verify and analyze the effectiveness of the video surveillance. At the same time, it lacks the function of analyzing the rationality of the layout of the coal mine area monitoring equipment. As a result, conventional video surveillance methods cannot meet the monitoring needs of the dynamically changing coal mine working environment.

[0004] In view of the above technical problems, this application proposes a solution. Summary of the invention

[0005] The purpose of the present invention is to provide a coal mine area security management system based on video monitoring, which is used to solve the problem that the coal mine area security management system in the prior art cannot meet the monitoring requirements of the dynamically changing coal mine working environment;

[0006] The technical problem to be solved by the present invention is: how to provide a coal mine area security management system based on video monitoring that can meet the monitoring needs of the dynamically changing coal mine working environment.

[0007] The purpose of the present invention can be achieved through the following technical solutions:

[0008] A coal mine area security management system based on video monitoring, comprising a video monitoring subsystem and an accident analysis subsystem, wherein the video monitoring subsystem comprises a video data acquisition module, a video data processing module and a monitoring analysis module; the accident analysis subsystem comprises an accident analysis module and a layout analysis module;

[0009] The video data processing module is used to process the on-site video images of the coal mine area: divide the coal mine area into several sub-areas, mark the on-site video images covering the sub-areas as monitoring videos of the sub-areas, divide the monitoring videos of the sub-areas into monitoring images frame by frame and send the monitoring images to the monitoring analysis module;

[0010] The monitoring and analysis module is used to perform monitoring and early warning analysis on monitoring images of the coal mine area;

[0011] The accident analysis module is used to perform monitoring, verification and analysis when a safety accident occurs in the coal mine area;

[0012] The layout analysis module is used to analyze the distribution status of monitoring equipment in the coal mine area and determine whether the rationality of the distribution status of monitoring equipment in the coal mine area meets the requirements.

[0013] As a preferred embodiment of the present invention, the video data acquisition module includes a special camera installed in the coal mine area, the special camera includes a waterproof KBA127 mining explosion-proof camera and a KBA127RJ mining explosion-proof camera with laser remote sensing of methane. The special camera is used to collect on-site video images and methane concentration values ​​of the coal mine area and send them to the video data processing module.

[0014] As a preferred embodiment of the present invention, the specific process of the monitoring and analysis module performing monitoring and early warning analysis on the monitoring images of the coal mine area includes: processing the monitoring images through image processing technology and extracting abnormal conditions in the monitoring images, the abnormal conditions include unsafe behaviors of people, unsafe conditions of the environment and unsafe conditions of equipment, the unsafe behaviors of people include not wearing safety helmets, personnel leaving their posts in important duty places, sleeping, driving and pedestrians, illegally climbing over belts, riding on belts and entering dangerous areas; the unsafe conditions of the environment include the protection status of the working face, water level exceeding the limit, the presence of coal blocks, foreign objects or coal piles on the belt; the unsafe conditions of the equipment include belt deviation and tearing, the presence of foreign objects on the equipment and overheating of electromechanical equipment; when an abnormal state is detected, the corresponding sub-area is marked as an abnormal area, a monitoring early warning signal is generated and the monitoring early warning signal and early warning information are sent to the accident analysis subsystem and the mobile phone terminal of the management personnel, the early warning information includes the abnormal area number and the abnormal state type.

[0015] As a preferred embodiment of the present invention, the specific process of the accident analysis module performing monitoring verification analysis when a safety accident occurs in a coal mine area includes: when a safety accident occurs in a coal mine area, the sub-area where the safety accident occurs is marked as an accident area, and L1 minutes before the occurrence of the safety accident is marked as the verification time, and it is determined whether the accident area is marked as an abnormal area within the verification time: if so, an early warning processing training signal is generated and the early warning processing training signal is sent to the mobile phone terminal of the manager; if not, the monitoring image within the verification time is manually verified: if there is an abnormal state in the monitoring image, a monitoring analysis optimization signal is generated and the monitoring analysis optimization signal is sent to the mobile phone terminal of the manager; if there is no abnormal state in the monitoring image, a layout analysis signal is generated and the layout analysis signal is sent to the layout analysis module.

[0016] As a preferred embodiment of the present invention, the layout analysis module is used to analyze the distribution status of the monitoring equipment in the coal mine area and obtain the layout sequence and the demand sequence, mark the absolute value of the difference between the sequence number of the sub-area in the demand sequence and the sequence number in the layout sequence as the reasonable value of the sub-area, sum and average the reasonable values ​​of all sub-areas to obtain a reasonable coefficient, and compare the reasonable coefficient with a preset reasonable threshold: if the reasonable coefficient is less than the reasonable threshold, it is determined that the rationality of the distribution status of the monitoring equipment in the coal mine area meets the requirements, generate an equipment addition signal and send the equipment addition signal to the mobile phone terminal of the manager; if the reasonable coefficient is greater than or equal to the reasonable threshold, it is determined that the rationality of the distribution status of the monitoring equipment in the coal mine area does not meet the requirements, generate a layout optimization signal and send the layout optimization signal to the mobile phone terminal of the manager.

[0017] As a preferred embodiment of the present invention, the process of obtaining the layout sequence and the demand sequence includes: generating an analysis cycle, obtaining the spatial data KJ, personnel data RS and equipment data SS of the sub-area within the analysis cycle, the spatial data KJ is the spatial volume value of the sub-area, the personnel data RS is the total number of personnel performing construction in the sub-area within the analysis cycle, and the equipment data SS is the total number of equipment operating in the sub-area within the analysis cycle, and the demand coefficient XQ of the sub-area within the analysis cycle is obtained by numerically calculating the spatial data KJ, personnel data RS and equipment data SS; the sub-areas are arranged in order from large to small according to the values ​​of the demand coefficient XQ to obtain a demand sequence; the sub-areas are sorted in order from large to small according to the number of special cameras arranged in the area to obtain a layout sequence.

[0018] As a preferred embodiment of the present invention, the working method of the coal mine area security management system based on video surveillance includes the following steps:

[0019] Step 1: Use a special camera to collect on-site video images and methane concentration values ​​in the coal mine area and send them to the video data processing module;

[0020] Step 2: Process the on-site video images of the coal mine area and send the monitoring images to the monitoring analysis module;

[0021] Step 3: Perform monitoring and early warning analysis on the monitoring images of the coal mine area and generate a monitoring early warning signal when an abnormal state is detected, and send the monitoring early warning signal and early warning information to the accident analysis subsystem and the mobile terminal of the manager;

[0022] Step 4: Conduct monitoring verification and analysis when a safety accident occurs in the coal mine area;

[0023] Step 5: Analyze the distribution status of monitoring equipment in the coal mine area: generate an analysis period, obtain the demand coefficient XQ of the sub-area within the analysis period, and obtain a reasonable coefficient by analyzing the demand coefficient XQ and the number of characteristic cameras arranged in the sub-area. Use the reasonable coefficient to determine whether the rationality of the distribution status of monitoring equipment in the coal mine area meets the requirements.

[0024] The present invention has the following beneficial effects:

[0025] 1. The video monitoring subsystem can automatically identify and extract abnormal conditions in the coal mine area, realize automatic monitoring and early warning of abnormal conditions in the coal mine area, reduce the work pressure of managers, and avoid problems such as fatigue and omissions caused by manual supervision and untimely early warning;

[0026] 2. The accident analysis module can be used to conduct monitoring verification analysis when a safety accident occurs in the coal mine area. It can verify whether the sub-area has been warned and whether the monitoring image has an abnormal state. It can also analyze the monitoring data analysis link and the post-warning processing link, so as to optimize the links in a targeted manner according to the verification analysis results.

[0027] 3. The layout analysis module can be used to analyze the distribution status of monitoring equipment in the coal mine area. The demand coefficient can be obtained by comprehensive analysis and calculation based on multiple construction parameters of the sub-area. Then, the matching degree between the demand coefficient of the sub-area and the number of monitoring equipment layouts can be analyzed to obtain a reasonable coefficient. Based on the reasonable coefficient, the rationality of the distribution status of monitoring equipment in the coal mine area can be evaluated. When it is unreasonable, the monitoring equipment can be re-deployed so that the equipment layout can meet the monitoring needs of the dynamically changing construction environment of the coal mine area and reduce the probability of accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0029] Figure 1 A system block diagram of the present invention as a whole;

[0030] Figure 2 is a system block diagram of Embodiment 1 of the present invention;

[0031] Figure 3 is a system block diagram of Embodiment 2 of the present invention;

[0032] Figure 4 This is a method flow chart of embodiment 3 of the present invention. DETAILED DESCRIPTION

[0033] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] like Figure 1 As shown, a coal mine area security management system based on video surveillance includes a video surveillance subsystem and an accident analysis subsystem. The video surveillance subsystem includes a video data acquisition module, a video data processing module and a monitoring analysis module; the accident analysis subsystem includes an accident analysis module and a layout analysis module.

[0035] Embodiment 1

[0036] like Figure 2 As shown, the video data acquisition module includes a special camera installed in the coal mine area. The special camera includes a waterproof KBA127 mine explosion-proof camera and a KBA127RJ mine explosion-proof camera with laser remote sensing of methane. The special camera is used to collect on-site video images and methane concentration values ​​of the coal mine area and send them to the video data processing module.

[0037] The video data processing module is used to process the on-site video footage of the coal mine area: the coal mine area is divided into several sub-areas, the on-site video footage covering the sub-areas is marked as the monitoring video of the sub-areas, the monitoring video of the sub-areas is divided into frame-by-frame monitoring images and the monitoring images are sent to the monitoring analysis module.

[0038] The monitoring and analysis module is used to conduct monitoring and early warning analysis on the monitoring images of the coal mine area: the monitoring images are processed and abnormal conditions in the monitoring images are extracted through image processing technology. Abnormal conditions include unsafe behaviors of people, unsafe conditions of the environment and unsafe conditions of equipment. Unsafe behaviors of people include not wearing safety helmets, personnel leaving their posts in important duty places, sleeping, driving pedestrians, illegally climbing over belts, riding on belts and entering dangerous areas (including equipment such as coal mining machines and related areas such as fully mechanized mining faces); unsafe conditions of the environment include the state of the working face protection, excessive water levels, the presence of coal blocks or coal piles on the belts; Unsafe conditions of equipment include belt deviation and tearing, foreign objects on the equipment and overheating of electromechanical equipment; when an abnormal condition is detected, the corresponding sub-area is marked as an abnormal area, a monitoring warning signal is generated and the monitoring warning signal and warning information are sent to the accident analysis subsystem and the mobile phone terminal of the manager. The warning information includes the abnormal area number and the abnormal condition type; the abnormal conditions in the coal mine area are automatically identified and extracted, and automatic monitoring and warning of abnormal conditions in the coal mine area are realized, which reduces the work pressure of managers and avoids the problems of fatigue, omissions, and untimely warnings caused by manual supervision.

[0039] Embodiment 2

[0040] like Figure 3 As shown, the accident analysis module is used to perform monitoring verification analysis when a safety accident occurs in a coal mine area: when a safety accident occurs in a coal mine area, the sub-area where the safety accident occurs is marked as the accident area, and the L1 minute before the occurrence of the safety accident is marked as the verification time, and it is determined whether the accident area is marked as an abnormal area within the verification time: if so, an early warning processing training signal is generated and the early warning processing training signal is sent to the mobile phone terminal of the manager; if not, the monitoring image within the verification time is manually verified: if there is an abnormal state in the monitoring image, a monitoring analysis optimization signal is generated and the monitoring analysis optimization signal is sent to the mobile phone terminal of the manager; if there is no abnormal state in the monitoring image, a layout analysis signal is generated and the layout analysis signal is sent to the layout analysis module; when a safety accident occurs in a coal mine area, a monitoring verification analysis is performed, and whether the sub-area is warned and whether the monitoring image has an abnormal state is verified in turn, and the monitoring data analysis link and the processing link after the early warning are analyzed, so as to optimize the links in a targeted manner according to the verification analysis results.

[0041] The layout analysis module is used to analyze the distribution status of monitoring equipment in the coal mine area: generate an analysis cycle, obtain the spatial data KJ, personnel data RS and equipment data SS of the sub-area during the analysis cycle, the spatial data KJ is the spatial volume value of the sub-area, the personnel data RS is the total number of personnel working in the sub-area during the analysis cycle, and the equipment data SS is the total number of equipment running in the sub-area during the analysis cycle. The demand coefficient XQ of the sub-area in the analysis period is obtained, where k1, k2 and k3 are all proportional coefficients, and k3>k2>k1>1; the sub-areas are arranged in the order of the demand coefficient XQ values ​​from large to small to obtain a demand sequence; the sub-areas are sorted in the order of the number of special cameras arranged in the area from large to small to obtain a layout sequence, and the absolute value of the difference between the sequence number of the sub-area in the demand sequence and the sequence number in the layout sequence is marked as a reasonable value of the sub-area, and the reasonable values ​​of all sub-areas are summed and averaged to obtain a reasonable coefficient, and the reasonable coefficient is compared with a preset reasonable threshold: if the reasonable coefficient is less than the reasonable threshold, it is determined that the rationality of the distribution state of the monitoring equipment in the coal mine area meets the requirements, and an equipment addition signal is generated and the equipment is added. Assume that a signal is sent to the mobile phone terminal of the manager; if the reasonable coefficient is greater than or equal to the reasonable threshold, it is determined that the rationality of the distribution state of the monitoring equipment in the coal mine area does not meet the requirements, and a layout optimization signal is generated and sent to the mobile phone terminal of the manager; the distribution state of the monitoring equipment in the coal mine area is analyzed, and the demand coefficient is obtained by comprehensive analysis and calculation based on multiple construction parameters of the sub-area, and then the matching degree between the demand coefficient of the sub-area and the number of monitoring equipment layouts is analyzed to obtain a reasonable coefficient, so as to evaluate the rationality of the distribution state of the monitoring equipment in the coal mine area according to the reasonable coefficient, and re-deploy the monitoring equipment when it is unreasonable, so that the equipment layout can meet the monitoring needs of the dynamically changing construction environment of the coal mine area and reduce the probability of accidents.

[0042] Embodiment 3

[0043] like Figure 4 As shown, a method for coal mine area security management based on video surveillance includes the following steps:

[0044] Step 1: Use a special camera to collect on-site video images and methane concentration values ​​in the coal mine area and send them to the video data processing module;

[0045] Step 2: Process the on-site video images of the coal mine area and send the monitoring images to the monitoring analysis module;

[0046] Step 3: Perform monitoring and early warning analysis on the monitoring images of the coal mine area and generate a monitoring early warning signal when an abnormal state is detected, and send the monitoring early warning signal and early warning information to the accident analysis subsystem and the mobile terminal of the manager;

[0047] Step 4: Conduct monitoring verification and analysis when a safety accident occurs in the coal mine area;

[0048] Step 5: Analyze the distribution status of monitoring equipment in the coal mine area: generate an analysis period, obtain the demand coefficient XQ of the sub-area within the analysis period, and obtain a reasonable coefficient by analyzing the demand coefficient XQ and the number of characteristic cameras arranged in the sub-area. Use the reasonable coefficient to determine whether the rationality of the distribution status of monitoring equipment in the coal mine area meets the requirements.

[0049] A coal mine area security management system based on video surveillance, when working, collects on-site video images and methane concentration values ​​of the coal mine area through special cameras and sends them to a video data processing module; processes the on-site video images of the coal mine area and sends the monitoring images to a monitoring analysis module; performs monitoring and early warning analysis on the monitoring images of the coal mine area and generates a monitoring early warning signal when an abnormal state is detected, and sends the monitoring early warning signal and early warning information to an accident analysis subsystem and a mobile phone terminal of a manager; performs monitoring verification analysis when a safety accident occurs in the coal mine area; generates an analysis cycle, obtains a demand coefficient XQ of a sub-area within the analysis cycle, obtains a reasonable coefficient by analyzing the demand coefficient XQ and the number of characteristic cameras arranged in the sub-area, and determines whether the rationality of the distribution state of monitoring equipment in the coal mine area meets the requirements through the reasonable coefficient.

[0050] The above contents are merely examples and explanations of the structure of the present invention. The technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the structure of the invention or exceed the scope defined by the claims, they should all fall within the protection scope of the present invention.

[0051] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0052] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A coal mine area security management system based on video surveillance, characterized in that: It includes a video monitoring subsystem and an accident analysis subsystem. The video monitoring subsystem includes a video data acquisition module, a video data processing module and a monitoring analysis module. The accident analysis subsystem includes an accident analysis module and a layout analysis module. The video data processing module is used to process the on-site video images of the coal mine area: divide the coal mine area into several sub-areas, mark the on-site video images covering the sub-areas as monitoring videos of the sub-areas, divide the monitoring videos of the sub-areas into monitoring images frame by frame and send the monitoring images to the monitoring analysis module; The monitoring and analysis module is used to perform monitoring and early warning analysis on monitoring images of the coal mine area; The accident analysis module is used to perform monitoring, verification and analysis when a safety accident occurs in the coal mine area; The layout analysis module is used to analyze the distribution status of monitoring equipment in the coal mine area and determine whether the rationality of the distribution status of monitoring equipment in the coal mine area meets the requirements; The specific process of the accident analysis module performing monitoring verification analysis when a safety accident occurs in the coal mine area includes: when a safety accident occurs in the coal mine area, the sub-area where the safety accident occurs is marked as the accident area, and the L1 minute before the occurrence of the safety accident is marked as the verification time, and it is determined whether the accident area is marked as an abnormal area within the verification time: if so, an early warning processing training signal is generated and the early warning processing training signal is sent to the mobile phone terminal of the manager; if not, the monitoring image within the verification time is manually verified: if there is an abnormal state in the monitoring image, a monitoring analysis optimization signal is generated and the monitoring analysis optimization signal is sent to the mobile phone terminal of the manager; if there is no abnormal state in the monitoring image, a layout analysis signal is generated and the layout analysis signal is sent to the layout analysis module; The layout analysis module is used to analyze the distribution status of monitoring equipment in the coal mine area and obtain the layout sequence and the demand sequence, mark the absolute value of the difference between the sequence number of the sub-area in the demand sequence and the sequence number in the layout sequence as the reasonable value of the sub-area, sum and average the reasonable values ​​of all sub-areas to obtain a reasonable coefficient, and compare the reasonable coefficient with a preset reasonable threshold: if the reasonable coefficient is less than the reasonable threshold, it is determined that the rationality of the distribution status of the monitoring equipment in the coal mine area meets the requirements, generate an equipment addition signal and send the equipment addition signal to the mobile phone terminal of the manager; if the reasonable coefficient is greater than or equal to the reasonable threshold, it is determined that the rationality of the distribution status of the monitoring equipment in the coal mine area does not meet the requirements, generate a layout optimization signal and send the layout optimization signal to the mobile phone terminal of the manager; The process of obtaining the arrangement sequence and the demand sequence includes: generating an analysis cycle, obtaining the space data KJ, personnel data RS and equipment data SS of the sub-area in the analysis cycle, the space data KJ is the space volume value of the sub-area, the personnel data RS is the total number of personnel performing construction in the sub-area in the analysis cycle, and the equipment data SS is the total number of equipment operating in the sub-area in the analysis cycle, and the demand coefficient XQ of the sub-area in the analysis cycle is obtained by numerically calculating the space data KJ, personnel data RS and equipment data SS; arranging the sub-areas in the order of the demand coefficient XQ values ​​from large to small to obtain the demand sequence; and arranging the sub-areas in the order of the number of special cameras arranged in the area from large to small to obtain the arrangement sequence; The calculation formula of the demand coefficient XQ of the sub-area during the analysis period is: , where k1, k2 and k3 are all proportional coefficients, and k3>k2>k1>1.

2. A coal mine area security management system based on video surveillance according to claim 1, characterized in that: The video data acquisition module includes a special camera installed in the coal mine area, the special camera includes a waterproof KBA127 mine explosion-proof camera and a KBA127RJ mine explosion-proof camera with laser remote sensing of methane. The special camera is used to collect on-site video images and methane concentration values ​​in the coal mine area and send them to the video data processing module.

3. A coal mine area security management system based on video surveillance according to claim 2, characterized in that: The specific process of the monitoring and analysis module conducting monitoring and early warning analysis on the monitoring images of the coal mine area includes: processing the monitoring images through image processing technology and extracting abnormal conditions in the monitoring images. Abnormal conditions include unsafe behaviors of people, unsafe conditions of the environment and unsafe conditions of equipment. Unsafe behaviors of people include not wearing safety helmets, personnel leaving their posts in important duty places, sleeping, driving and pedestrians, illegally climbing over belts, riding on belts and entering dangerous areas; unsafe conditions of the environment include the state of the working face guard, water level exceeding the limit, the presence of coal blocks or coal piles on the belt; unsafe conditions of equipment include belt deviation and tearing, the presence of foreign objects on the equipment and overheating of electromechanical equipment; when an abnormal state is detected, the corresponding sub-area is marked as an abnormal area, a monitoring early warning signal is generated and the monitoring early warning signal and early warning information are sent to the accident analysis subsystem and the mobile phone terminal of the manager. The early warning information includes the abnormal area number and the abnormal state type.

4. A coal mine area security management system based on video surveillance according to any one of claims 1 to 3, characterized in that: The working method of the coal mine area security management system based on video monitoring includes the following steps: Step 1: Use a special camera to collect on-site video images and methane concentration values ​​in the coal mine area and send them to the video data processing module; Step 2: Process the on-site video images of the coal mine area and send the monitoring images to the monitoring analysis module; Step 3: Perform monitoring and early warning analysis on the monitoring images of the coal mine area and generate a monitoring early warning signal when an abnormal state is detected, and send the monitoring early warning signal and early warning information to the accident analysis subsystem and the mobile terminal of the manager; Step 4: Conduct monitoring verification and analysis when a safety accident occurs in the coal mine area; Step 5: Analyze the distribution status of monitoring equipment in the coal mine area: generate an analysis period, obtain the demand coefficient XQ of the sub-area within the analysis period, and obtain a reasonable coefficient by analyzing the demand coefficient XQ and the number of characteristic cameras arranged in the sub-area. Use the reasonable coefficient to determine whether the rationality of the distribution status of monitoring equipment in the coal mine area meets the requirements.

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