Intelligent safety monitoring system for coal mine

Abstract

The invention relates to the technical field of coal mine safety, in particular to a coal mine intelligent safety monitoring system which comprises an overground control terminal, a data signal module and a plurality of underground operation terminals. An underground environment monitoring device; the vibration monitoring unit comprises a mine vibration monitoring module and an equipment vibration monitoring module; the mine vibration monitoring module is arranged in a coal mine in a covered area in a segmented manner according to a preset distance; the equipment vibration monitoring module is used for monitoring the vibration condition of underground operation equipment; the vibration monitoring unit is also internally provided with a self-checking module; the pressure monitoring unit is internally provided with a pressure sensing module used for monitoring the pressing weight of underground operation equipment and underground environment monitoring equipment above the pressure monitoring unit. And a circuit cut-off module. The system is used for monitoring the vibration condition of the environment and the working equipment in the mine in real time, deeply analyzing the vibration data, timely discovering and early warning potential safety risks, and providing powerful guarantee for safe production of the coal mine.

Description

Technical Field

[0001] The present invention relates to the technical field of coal mine safety, and in particular to an intelligent safety monitoring system for coal mines. Background Art

[0002] Coal mine safety production is an important cornerstone for protecting the lives and property of miners, maintaining social stability, and promoting the sustainable and healthy development of the coal industry. It is not only directly related to national energy security, but also has a profound impact on the safety of people's lives and property and the stable development of the social economy. Strengthening coal mine safety production management can not only significantly reduce the accident rate and protect the lives of miners, but also improve the economic benefits of coal mining enterprises and promote the sustainable development of the coal industry. Therefore, building an efficient and intelligent coal mine safety monitoring system is of great significance to improving the level of coal mine safety management and ensuring coal mine production safety.

[0003] Although the intelligent construction of coal mines has made significant progress in recent years, there are still many deficiencies in the monitoring of vibration conditions in mines. The vibration conditions in mines have an impact on mine safety and equipment operation that cannot be ignored. On the one hand, vibration may cause displacement of certain equipment in the mine, thereby affecting the stability and operating efficiency of the equipment. For example, vibration may loosen the support structure, leading to safety accidents such as roof collapse; it may also cause transportation equipment to deviate from the track, affecting the normal transportation of coal. On the other hand, excessive vibration inside the mine may also bring direct safety risks. High-intensity vibration will not only cause damage to the physical and mental health of underground workers, but may also cover up other important sound information, such as equipment failure, abnormal noise, etc., thereby increasing the probability of accidents. In addition, vibration may also cause changes in geological structures and increase the risk of geological disasters such as rock burst.

[0004] In order to solve the problem of real-time monitoring of the impact of vibration conditions in mines on equipment, environment and worker safety, it is urgent to develop an intelligent coal mine safety monitoring system. Summary of the invention

[0005] To solve the above problems, the present invention provides an intelligent coal mine safety monitoring system, which is used to monitor the vibration of the mine environment and working equipment in real time, and conduct in-depth analysis of the vibration data, timely discover and warn of potential safety risks, and provide strong protection for coal mine safety production.

[0006] In order to achieve the above-mentioned purpose, the technical scheme of the present invention is as follows: an intelligent safety monitoring system for coal mines, comprising a ground control terminal, a data signal module and a plurality of underground operation terminals for underground operations in the mine connected to each other by signals, the ground control terminal is used to receive information fed back by the underground operation terminal through the data signal module and to control the underground operation terminal, the underground operation terminals are deployed in sections according to the diameter and depth of the mine and are numbered in sequence, and the underground operation terminals include:

[0007] Underground operation equipment, including a variety of intelligent equipment for coal mining, transportation, tunneling and support;

[0008] Underground environmental monitoring equipment, which is used to monitor the environmental conditions in the mine and feed back to the above-ground control terminal;

[0009] A vibration monitoring unit, comprising a mine vibration monitoring module and an equipment vibration monitoring module for monitoring the vibration conditions of underground working equipment, which are deployed in sections at preset distances in the coal mine within the covered area. The vibration monitoring unit also has a built-in self-check module, which is used to determine whether it is in a normal working state through the vibration conditions of external underground working equipment in a forward verification and reverse verification manner, and generate real-time frequency data for transmission to a ground control terminal. The forward verification is that the self-check module determines whether the vibration signal is within a normal range through an internal algorithm. If the vibration signal determined by the internal algorithm has a frequency offset or an abnormal amplitude fluctuation, it is considered abnormal and triggers an alarm. The reverse verification is that the vibration data collected in real time by the ground control terminal is combined with the specific collection progress of the underground working equipment collected by the ground control terminal to reversely infer whether the current vibration state meets the preset frequency range of the ground control terminal.

[0010] The pressure monitoring unit is placed between the underground working equipment and the underground environment monitoring equipment and the fixed surface of the equipment. The pressure monitoring unit has a built-in pressure sensing module for monitoring the downward pressure weight of the underground working equipment and the underground environment monitoring equipment arranged above the pressure monitoring unit, and generates real-time pressure data to be transmitted to the ground control terminal;

[0011] The circuit cutting module is used to control the cutting of the circuits of underground working equipment and underground environment monitoring equipment according to the data fed back by the vibration monitoring unit and the pressure monitoring unit through the ground control terminal.

[0012] Furthermore, the underground environment monitoring equipment is equipped with a temperature and humidity module for monitoring the temperature and humidity of the underground environment of the coal mine, an air quality monitoring module for monitoring the concentration of harmful gases in the air underground in the coal mine, and a video monitoring module for monitoring the working conditions of underground operating equipment.

[0013] Furthermore, the ground control terminal includes an equipment operation control module, and the equipment operation control module is used to control the automated operation of the underground operating equipment.

[0014] Furthermore, the ground control terminal also includes an environmental data integration module, which is used to receive data fed back by the temperature and humidity monitoring module, the air quality monitoring module and the video monitoring module.

[0015] Furthermore, the ground control terminal also includes a display module for presenting the working data received by the environmental data integration module and the self-checking module to the operator.

[0016] Furthermore, the ground control terminal also includes a vibration frequency determination module, which is used to receive the vibration frequency in the coal mine from the coal mine vibration monitoring module in real time, and compare it with the normal vibration frequency range in the coal mine to determine whether the impact of the underground operating equipment on the coal mine is normal.

[0017] Furthermore, the ground control terminal also includes a danger warning module, which is connected to the environmental data integration module and the vibration frequency determination module. The danger warning module is used to issue a warning message when the data received by the environmental data integration module and the vibration frequency determination module is higher than the normal set range value.

[0018] Furthermore, the danger warning module is connected to the circuit cutoff module through a data communication module signal, and the circuit cutoff module is activated when the data received by the environmental data integration module and the vibration frequency determination module is higher than a conventional set range value.

[0019] Furthermore, the ground control terminal also includes a displacement warning module, which is used to receive information from the pressure sensing module to determine whether the underground operating equipment and underground environmental monitoring equipment above the pressure monitoring unit are in normal working order at the original location.

[0020] Furthermore, underground operation terminals are deployed in sections according to the depth of the mine, and are labeled A, B, and C in order from deep to shallow. In the absence of any faults, the priority of the ground control terminal for the underground operation terminal is A→B→C.

[0021] 1. This solution deploys underground operation terminals in sections according to the depth of the mine and numbers them in order from deep to shallow. This layout of layered deployment and numbering management is not only easy to manage, making the maintenance and management of underground operation terminals more convenient, reducing maintenance costs and management difficulties, but also can flexibly adjust the monitoring scope according to the actual situation of the mine, ensuring the comprehensiveness and accuracy of the monitoring data, and facilitating the rapid location of problem areas. In an emergency, potential risks can be quickly located and dealt with.

[0022] 2. In this solution, the vibration monitoring unit senses the vibration signals in the coal mine and underground working equipment in real time through the built-in sensitive elements. The collected vibration signals are processed by the circuit inside the sensor to convert the mechanical vibration into electrical signals to ensure that the vibration monitoring unit itself works normally. In the positive verification process, first, the self-test module will continuously collect vibration frequency signal data from each vibration monitoring unit, and compare and analyze the real-time collected vibration frequency signal with the preset reference value. In this step, not only the absolute value of the signal is compared to see if it exceeds the normal range, but also the frequency spectrum characteristics of the signal are analyzed by Fourier transform to detect the underground working process in the coal mine. Whether there are non-intuitive problems such as frequency offset and harmonic distortion in industrial equipment, underground environmental monitoring equipment and the inner wall of coal mine shafts, and whether there are signal distortions such as frequency offset or abnormal amplitude fluctuations. In the reverse verification process, if during the operation of underground operating equipment, the operation control module determines that the vibration should be within a certain range, but the measured data fed back by the equipment vibration monitoring module of the vibration monitoring unit does not match it, it also reflects that there may be problems with the vibration frequency signal. Once the self-test module confirms that the vibration frequency signal is distorted and the existence of the problem is confirmed through two-way verification, it will immediately generate an alarm signal and transmit it to the display module of the ground control terminal through the communication interface. After receiving the alarm, the operator can quickly locate the problem sensor based on the displayed information and conduct further inspection and maintenance.

[0023] The vibration monitoring unit is divided into a mine vibration monitoring module and an equipment vibration monitoring module. The former monitors the vibration of the mine itself, and receives real-time frequency data from the vibration monitoring unit through the vibration frequency determination module, and compares and analyzes it with the preset normal vibration frequency range. Through this step, the system can identify abnormal vibration conditions and determine the extent of their impact on mine safety and equipment operation. The latter monitors the vibration of the operating equipment, and the system can promptly detect potential problems such as equipment loosening and offset, thereby avoiding damage to the equipment or affecting operating efficiency due to excessive vibration. The vibration frequency determination module of the ground control terminal receives real-time frequency data from the vibration monitoring unit, and compares and analyzes it with the preset normal vibration frequency range. Through this step, the system can identify abnormal vibration conditions and determine the extent of their impact on mine safety and equipment operation.

[0024] 3. This solution integrates multiple sensors such as vibration monitoring unit, pressure monitoring unit, temperature and humidity module, air quality monitoring module and video monitoring module to realize comprehensive monitoring of environmental parameters (such as temperature, humidity, gas concentration) and equipment status (such as vibration conditions, equipment location) in the mine, improving the accuracy and efficiency of safety management. By real-time monitoring of environmental parameters in the mine and combining with the display module, various environmental parameters and equipment status information in the coal mine can be displayed in real time, potential environmental safety risks can be discovered in time, and strong guarantees can be provided for safe production in coal mines, reducing the accident rate.

[0025] 4. In this solution, the pressure monitoring unit is placed between the fixed surfaces of the equipment to monitor the pressure changes between the equipment, and the stability of the equipment and whether there is a displacement risk are evaluated through pressure data. Because some underground operating equipment can still maintain normal working conditions in the case of large displacements, but the actual underground operating equipment has high precision requirements in the coal mine. Similarly, the data monitored by the underground environmental monitoring equipment in the case of large displacements is different from the data in the original position. The data fed back to the environmental data integration module will cause errors, which will lead to the inability to actually reflect the environmental conditions in the coal mine. The joint application of the vibration monitoring unit and the pressure monitoring unit can effectively monitor the stability of the equipment and promptly remind the operator to send staff to return the equipment.

[0026] 5. In this solution, the hazard warning module receives data information from the environmental data integration module and the vibration frequency determination module, and compares the current data with the preset safety threshold, historical data or industry standards to identify potential safety risks or abnormal conditions. When the analysis results show that the data exceeds the preset safety range or meets specific warning conditions, the hazard warning module will make a warning judgment. Once the warning condition is triggered, the module will immediately generate warning information and organize personnel to evacuate by sending an alarm to the operator. The system will automatically start the circuit cut-off module to ensure that effective measures are taken to intervene and control before or in the early stage of the accident, thereby reducing the probability and severity of the accident.

[0027] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall principle of an embodiment of the intelligent safety monitoring system for coal mines of the present invention;

[0029] Figure 2 It is a structural block diagram of an embodiment of the coal mine intelligent safety monitoring system of the present invention. DETAILED DESCRIPTION

[0030] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not 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.

[0031] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0032] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] The following is further described in detail through specific implementation methods:

[0034] Implementation example Figure 1 and Figure 2 As shown: an intelligent safety monitoring system for coal mines, including a ground control terminal, a data signal module and several underground operation terminals for underground operations in the mine, which are connected to each other by signals. The ground control terminal is used to receive information fed back by the underground operation terminal through the data signal module and control the underground operation terminal. The underground operation terminals are deployed in sections according to the diameter and depth of the mine, and are labeled A, B, and C in order from deep to shallow. In the absence of faults, the ground control terminal has a priority processing of A→B→C for the underground operation terminal. The underground operation terminal includes the following equipment, monitoring units and modules:

[0035] Underground operation equipment includes a variety of intelligent equipment for coal mining, transportation, tunneling and support. For example, intelligent coal mining machines use automated control to achieve precise cutting of coal seams, belt conveyors can transport materials, mainly mined coal, intelligent tunneling machines can quickly tunnel rock and coal seams, and hydraulic supports are used to support tunnels and goafs.

[0036] Underground environmental monitoring equipment is used to monitor various environmental conditions in the mine and feed back to the ground control terminal. The underground environmental monitoring equipment has a built-in temperature and humidity module for monitoring the temperature and humidity of the underground environment of the coal mine, an air quality monitoring module for monitoring other harmful gases in the air underground in the coal mine, such as methane, carbon monoxide and oxygen concentration, and a video monitoring module for monitoring the working conditions of underground operating equipment, such as a surveillance camera.

[0037] The vibration monitoring unit includes a mine vibration monitoring module deployed in sections according to preset distances in the coal mine within the covered area and an equipment vibration monitoring module for monitoring the vibration conditions of underground working equipment. The vibration monitoring unit also has a built-in self-test module. The self-test module is used to determine whether it is in a normal working state through the vibration conditions of external underground working equipment in a forward verification and reverse verification manner, and generate real-time frequency data for transmission to the ground control terminal. The forward verification is that the self-test module determines whether the vibration signal is within the normal range through the Fourier transform in the internal algorithm. If the vibration signal determined by the internal algorithm has a frequency offset or abnormal amplitude fluctuation, it is regarded as an abnormality and triggers an alarm. The reverse verification is that the vibration data collected in real time by the ground control terminal is combined with the specific collection progress of the underground working equipment collected by the ground control terminal to reversely infer whether the current vibration state meets the preset frequency range of the ground control terminal.

[0038] The pressure monitoring unit is placed between the underground working equipment, the underground environmental monitoring equipment and the fixed surface of the equipment. The pressure monitoring unit has a built-in pressure sensing module for monitoring the downward weight of the underground working equipment and the underground environmental monitoring equipment above the pressure monitoring unit, and generates real-time pressure data for transmission to the ground control terminal.

[0039] The circuit cutting module is used to control the cutting of the circuits of underground operating equipment and underground environment monitoring equipment according to the data fed back by the vibration monitoring unit and the pressure monitoring unit through the ground control terminal.

[0040] The ground control terminal includes the following modules:

[0041] The equipment operation control module is used to control the automated operation of underground operation equipment.

[0042] The environmental data integration module is used to receive data fed back by the temperature and humidity monitoring module, the air quality monitoring module and the video monitoring module.

[0043] The display module is used to present the working data received by the environmental data integration module and the self-check module to the operator.

[0044] The vibration frequency determination module is used to receive the vibration frequency in the coal mine from the coal mine vibration monitoring module in real time, and compare it with the normal vibration frequency range in the coal mine to determine whether the impact of underground operating equipment on the coal mine is normal.

[0045] The hazard warning module is connected to the environmental data integration module and the vibration frequency determination module. The hazard warning module is used to issue a warning message when the data received by the environmental data integration module and the vibration frequency determination module is higher than the conventional set range value. The hazard warning module is connected to the circuit cutoff module through the data communication module signal. When the data received by the environmental data integration module and the vibration frequency determination module is higher than the conventional set range value, the circuit cutoff module is started.

[0046] The displacement warning module is used to receive information from the pressure sensing module to determine whether the underground operating equipment and underground environment monitoring equipment above the pressure monitoring unit are in normal working order.

[0047] The specific implementation process is as follows:

[0048] First, according to the actual diameter and depth of the mine, the underground operation terminals are reasonably arranged and numbered to ensure that each key area can be effectively monitored. The numbers of the underground operation terminals are updated in real time according to the excavation progress in the coal mine to ensure that the ground control terminal has the priority to process the underground operation terminals. Taking a coal mine with a depth of 500 meters as an example, first, according to the diameter and depth of the mine, geological structure and mining plan, the underground space is divided into multiple operating layers, and each layer is further subdivided according to specific functional areas (such as mining area L1, transportation area L2, ventilation area L3, etc.). Dedicated underground operation terminals are deployed in each area and numbered, such as "L1-A1" represents the first terminal in the first mining area.

[0049] As the excavation progresses, the system will update the terminal number in real time to ensure that the control terminal can accurately identify and prioritize data in key areas. This dynamic management method effectively improves management efficiency and reduces maintenance costs and time costs caused by unreasonable layout. This layout method of layered deployment and numbering management is not only easy to manage, making the maintenance and management of underground operation terminals more convenient, reducing maintenance costs and management difficulties, but also can flexibly adjust the monitoring scope according to the actual situation of the mine, ensuring the comprehensiveness and accuracy of the monitoring data, and facilitating the rapid location of problem areas. In an emergency, potential risks can be quickly located and handled. In addition, the ground control terminal needs to be installed and debugged to ensure that the signal connection between it and the underground operation terminal is stable and reliable.

[0050] Before mining in a coal mine, underground operating equipment and underground environmental monitoring equipment are deployed in different areas of the mine for mining and transporting coal and real-time monitoring of environmental parameters in the mine. Pressure monitoring units are deployed at the bottom of the underground operating equipment and underground environmental monitoring equipment, and vibration monitoring units are arranged in sections at the bottom of the underground operating equipment and on the inner wall of the coal mine. At the same time, the signal connection with the ground control terminal is detected through the data communication module to ensure that it can work normally and transmit data accurately.

[0051] When underground working equipment is mining a coal mine, the temperature and humidity module, air quality monitoring module and video monitoring module in the underground environmental monitoring equipment continuously collect environmental parameters and image information in the mine, and transmit these data to the environmental data integration module in real time through the data signal module, and feedback to the operator through the display module. For example, when it is detected that the CO concentration in a certain area exceeds the standard, the system will immediately mark the area and issue a warning to the operator in the ground control room through the display module.

[0052] At the same time, the vibration monitoring unit senses the vibration signals in the coal mine and underground operating equipment in real time through the built-in sensitive elements. The collected vibration signals are processed by the circuit inside the sensor to convert the mechanical vibration into electrical signals to ensure that the vibration monitoring unit itself works normally. In the positive verification process, first, the self-test module will continuously collect vibration frequency signal data from each vibration monitoring unit, and compare and analyze the real-time collected vibration frequency signal with the preset reference value. In this step, not only is the absolute value of the signal compared to see if it exceeds the normal range, but the spectrum characteristics of the signal are analyzed by Fourier transform, and the collected vibration frequency signal is decomposed into a superposition of multiple sine and cosine waves of different frequencies, so as to obtain spectrum information to analyze whether the amplitude and phase of each frequency component exceed the set threshold or whether a frequency offset occurs. In addition to frequency offset, the abnormal fluctuation of the vibration signal can also be detected by analyzing the spectrum information. The abnormal fluctuation is usually manifested as a drastic change in the amplitude of certain frequency components in the spectrum diagram, or the emergence of new frequency components, thereby detecting whether there is abnormal vibration, looseness or damage inside the underground operating equipment, underground environmental monitoring equipment and the inner wall of the coal mine during the working process in the coal mine.

[0053] During the reverse verification process, if the operation control module determines that the vibration should be within a certain range during the operation of the underground operation equipment, but the measured data fed back by the vibration monitoring module of the vibration monitoring unit does not match it, it also reflects that there may be a problem with the vibration frequency signal. Once the self-check module confirms that the vibration frequency signal is distorted and the existence of the problem is confirmed through two-way verification, it will immediately generate an alarm signal and transmit it to the display module of the ground control terminal through the communication interface. After receiving the alarm, the operator can quickly locate the problem sensor according to the displayed information and conduct further inspection and maintenance. Assume that a conveyor belt in the transport area has loosened its support frame due to long-term operation. The vibration monitoring unit located under the conveyor belt captures the abnormal vibration signal and immediately converts it into an electrical signal through circuit processing. After the self-check module confirms that the signal is correct, it uploads the abnormal data to the control terminal. The vibration frequency determination module of the control terminal compares it with the preset normal range, quickly identifies the abnormality, and issues a maintenance notice.

[0054] The vibration monitoring unit is divided into a mine vibration monitoring module and an equipment vibration monitoring module. The mine vibration monitoring module monitors the vibration of the mine itself, receives real-time frequency data from the vibration monitoring unit through the vibration frequency determination module, and compares and analyzes it with the preset normal vibration frequency range. Through this step, the system can identify abnormal vibration conditions and determine the extent of their impact on mine safety and equipment operation; the equipment vibration monitoring module monitors the vibration of the operating equipment, and the system can promptly detect potential problems such as equipment loosening and offset, thereby avoiding damage to the equipment due to excessive vibration or affecting operating efficiency; the vibration frequency determination module of the ground control terminal receives real-time frequency data from the vibration monitoring unit, and compares and analyzes it with the preset normal vibration frequency range. Through this step, the system can identify abnormal vibration conditions and determine the extent of their impact on mine safety and equipment operation.

[0055] In addition, the pressure monitoring unit evaluates the stability of the equipment and whether there is a risk of displacement through pressure data. Some underground operating equipment can still maintain normal working conditions in the event of a large displacement, but the actual underground operating equipment has high precision requirements in the coal mine. For example, the pressure monitoring unit found that the center of gravity of a coal mining machine was offset. Although the machine can continue to work, there is a safety hazard. Combined with the data from the vibration monitoring unit, the system determines that the equipment may have loose foundations due to long-term uneven force. According to the system prompt, the operator quickly dispatched a maintenance team to the site to reinforce and return the coal mining machine, effectively avoiding potential accidents.

[0056] Similarly, the data monitored by underground environmental monitoring equipment in the event of a large displacement will be different from the data in the original position. The data fed back to the environmental data integration module will cause errors, which will lead to the inability to actually reflect the environmental conditions inside the coal mine. The joint application of the vibration monitoring unit and the pressure monitoring unit can effectively monitor the stability of the equipment and promptly remind the operator to dispatch staff to return the equipment to its original position.

[0057] The data information received by the danger warning module from the environmental data integration module and the vibration frequency determination module is compared with the preset safety threshold, historical data or industry standards in real time. When the analysis results show that part of the data exceeds the preset safety range or meets specific warning conditions, the danger warning module will make a warning judgment. Once the warning condition is triggered, the module will immediately generate warning information. The operator can quickly judge the nature and severity of the problem based on the warning information and take corresponding emergency response measures. If the analysis results show that the data completely exceeds the preset safety range, the danger warning module will directly organize the evacuation of personnel by issuing an alarm to the operator. The system will automatically start the circuit cut-off module to ensure that effective measures are taken before or at the early stage of the accident to intervene and control, reducing the probability and severity of the accident. For example, the air quality in the ventilation area drops sharply, accompanied by abnormal vibration, and the warning module is immediately activated to determine that there may be gas accumulation and potential landslide risks. The system not only issues an emergency evacuation order to the operator, but also automatically starts the circuit cut-off module to cut off the unnecessary power supply in the area.

[0058] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. An intelligent coal mine safety monitoring system, characterized in that: It includes ground control terminals, data signal modules and several underground operation terminals used for underground operations in mines that are connected to each other by signals. The ground control terminals are used to receive information fed back by underground operation terminals through data signal modules and control underground operation terminals. The underground operation terminals are deployed in sections according to the diameter and depth of the mine and are numbered in sequence. The underground operation terminals include: Underground operation equipment, including a variety of intelligent equipment for coal mining, transportation, tunneling and support; Underground environmental monitoring equipment, which is used to monitor the environmental conditions in the mine and feed back to the above-ground control terminal; A vibration monitoring unit, comprising a mine vibration monitoring module and an equipment vibration monitoring module for monitoring the vibration conditions of underground working equipment, which are deployed in sections at preset distances in the coal mine within the covered area. The vibration monitoring unit also has a built-in self-check module, which is used to determine whether it is in a normal working state through the vibration conditions of external underground working equipment in a forward verification and reverse verification manner, and generate real-time frequency data for transmission to a ground control terminal. The forward verification is that the self-check module determines whether the vibration signal is within a normal range through an internal algorithm. If the vibration signal determined by the internal algorithm has a frequency offset or an abnormal amplitude fluctuation, it is considered abnormal and triggers an alarm. The reverse verification is that the vibration data collected in real time by the ground control terminal is combined with the specific collection progress of the underground working equipment collected by the ground control terminal to reversely infer whether the current vibration state meets the preset frequency range of the ground control terminal. The pressure monitoring unit is placed between the underground working equipment and the underground environment monitoring equipment and the fixed surface of the equipment. The pressure monitoring unit has a built-in pressure sensing module for monitoring the downward pressure weight of the underground working equipment and the underground environment monitoring equipment arranged above the pressure monitoring unit, and generates real-time pressure data to be transmitted to the ground control terminal; The circuit cutting module is used to control the cutting of the circuits of underground working equipment and underground environment monitoring equipment according to the data fed back by the vibration monitoring unit and the pressure monitoring unit through the ground control terminal.

2. The intelligent coal mine safety monitoring system according to claim 1 is characterized in that: The underground environment monitoring equipment is equipped with a temperature and humidity module for monitoring the temperature and humidity of the underground environment of the coal mine, an air quality monitoring module for monitoring the concentration of harmful gases in the air underground in the coal mine, and a video monitoring module for monitoring the working conditions of underground operating equipment.

3. The intelligent coal mine safety monitoring system according to claim 2 is characterized in that: The ground control terminal includes an equipment operation control module, which is used to control the automated operation of underground operating equipment.

4. The intelligent coal mine safety monitoring system according to claim 3 is characterized in that: The ground control terminal also includes an environmental data integration module, which is used to receive data fed back by the temperature and humidity monitoring module, the air quality monitoring module and the video monitoring module.

5. The intelligent coal mine safety monitoring system according to claim 4 is characterized in that: The ground control terminal also includes a display module for presenting the working data received by the environmental data integration module and the self-checking module to the operator.

6. The intelligent coal mine safety monitoring system according to claim 5, characterized in that: The ground control terminal also includes a vibration frequency determination module, which is used to receive the vibration frequency in the coal mine from the coal mine vibration monitoring module in real time, and compare it with the normal vibration frequency range in the coal mine to determine whether the impact of underground operating equipment on the coal mine is normal.

7. The intelligent coal mine safety monitoring system according to claim 6, characterized in that: The ground control terminal also includes a danger warning module, which is connected to the environmental data integration module and the vibration frequency determination module. The danger warning module is used to issue a warning message when the data received by the environmental data integration module and the vibration frequency determination module is higher than the normal set range value.

8. The intelligent coal mine safety monitoring system according to claim 7 is characterized in that: The danger warning module is connected to the circuit cut-off module through a data communication module signal. When the data received by the environmental data integration module and the vibration frequency determination module is higher than the conventional set range value, the circuit cut-off module is started.

9. The intelligent coal mine safety monitoring system according to claim 8, characterized in that: The ground control terminal also includes a displacement warning module, which is used to receive information from the pressure sensing module to determine whether the underground operating equipment and underground environmental monitoring equipment above the pressure monitoring unit are in normal working order at the original location.

10. The intelligent coal mine safety monitoring system according to claim 9, characterized in that: The underground operating terminals are deployed in sections according to the depth of the mine, and are labeled A, B, and C in order from deep to shallow. In the absence of any faults, the priority of the ground control terminal for the underground operating terminal is A→B→C.

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