A 5G-based coal mine safety early warning system

Abstract

This invention belongs to the field of coal mine safety technology, specifically a 5G-based coal mine safety early warning system, including a platform and monitoring equipment. The platform includes: a main analysis module, which compares received underground data and issues an early warning signal if an anomaly is found; and an alert module, which sends an alarm to coal mine managers and underground workers upon receiving the early warning signal. The monitoring equipment detects various underground data and transmits it to the platform via the 5G network. This invention uses 5G technology to transmit underground data, enabling real-time monitoring and comparison of the underground environment, providing early warnings of underground anomalies, improving production safety, and using mobile monitoring equipment to monitor the workers' working face, improving the accuracy of the detection data.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of coal mine safety, and particularly relates to a coal mine safety early warning system based on 5G. BACKGROUND

[0002] The safety problem of underground work has always been a problem that coal mine enterprises pay more attention to and care about. The underground environment is complex, and the monitoring environment is poor. In the existing technology, there are many monitoring systems for safety, mainly for monitoring gas such as underground gas, and the system monitoring is not comprehensive. At the same time, due to the complexity of the underground environment, part of the monitoring equipment may be affected by its environment, resulting in monitoring being affected, and the video monitoring is generally a camera device worn on the body of the personnel, which can only see the situation in front of the personnel, and cannot manage the whole field. In addition, due to the factors of network transmission rate and network stability in the mine, the data transmitted by the existing early warning system is relatively simple, and most of them are real-time monitoring and alarm of the underground environment, and cannot monitor and compare the underground data in real time, so as to early warn the abnormal state in the mine and improve the safety of coal mine production.

[0003] At the same time, when various types of sensors and detectors are used to detect various data in the underground tunnel, the placement and fixation of the sensors are relatively troublesome at the working face where the workers are working, and temporary supports are often set for placing the sensors, or the workers hold the sensors for detection, which greatly affects the safety of the use of the sensors and the detection accuracy, so that the detection data error is large and misjudgment is easy to occur. SUMMARY

[0004] In order to make up for the shortcomings of the prior art, based on the 5G technology for transmitting underground data, the underground environment is monitored and compared in real time, the underground abnormality is warned, the production safety is improved, and the mobile monitoring equipment is used to monitor the working face of the workers, so as to improve the accuracy of the detection data. The application provides a coal mine safety early warning system based on 5G.

[0005] The technical scheme adopted by the application to solve the technical problem is that the coal mine safety early warning system based on 5G comprises a platform end and a monitoring device, the platform end runs in the machine room server of the coal mine management center, the monitoring device is installed at each place in the tunnel, the monitoring device exchanges data with the platform end through a 5G network, the platform end analyzes, monitors and warns the underground data received, and the platform end comprises:

[0006] A main analysis module, the underground data received by the main analysis module is compared with the standard value marked in the relevant provisions, a deviation range is obtained, and the main analysis module sends a warning signal when the deviation range exceeds the normal error range;

[0007] The reminding module sends an alarm to the coal mine manager after receiving the early warning signal, and the reminding module sends an alarm to the communication equipment carried by the underground worker through the 5G network. The underground worker receives the alarm and evacuates in time. The coal mine manager receives the alarm and handles it in time to assist the underground worker to evacuate;

[0008] The monitoring device detects various data underground and transmits them to the platform end through the 5G network. The data detected by the monitoring device includes but is not limited to carbon monoxide concentration, carbon dioxide concentration, methane concentration, hydrogen sulfide concentration, mine dust concentration, gas concentration, wind speed, air volume, temperature and humidity, damper state, equipment start-stop;

[0009] The monitoring device includes fixed monitoring devices and mobile monitoring devices. The fixed monitoring devices are installed at fixed intervals in the underground mine tunnel. The mobile monitoring devices are carried by the underground workers and placed at the working face where the underground workers are located.

[0010] Preferably, the platform end further comprises:

[0011] The secondary analysis module receives information about the monitoring device corresponding to the abnormal underground data from the main analysis module. The secondary analysis module performs correlation analysis on the underground data uploaded by the monitoring device and the underground data uploaded by other monitoring devices near the monitoring device, and obtains a correlation coefficient.

[0012] When the correlation coefficient is greater than 95%, the secondary analysis module determines that the change trend of the underground data detected by the monitoring device and other monitoring devices near the monitoring device is significantly correlated, that is, the detected underground data is correct and the underground indeed has an abnormality. The secondary analysis module sends a confirmation signal.

[0013] The reminding module sends an alarm to the coal mine manager and the underground worker after receiving the confirmation signal and the early warning signal. The reminding module sends an alarm to the coal mine manager only after receiving the early warning signal.

[0014] Preferably, the platform end further comprises:

[0015] The planning module is used to plan the evacuation path of the underground worker according to the mine tunnel stereogram. The communication equipment carried by the underground worker reports its location in real time to the planning module through the 5G network. The planning module sends the evacuation path to the communication equipment carried by the underground worker through the 5G network.

[0016] Preferably, the platform end further comprises:

[0017] The preprocessing module is used for analyzing the downhole monitoring video, the monitoring device comprises a camera, the camera comprises a fixed camera installed in a roadway and a camera device worn on a downhole worker, and the video shot by the camera in the monitoring device is transmitted to a platform end in real time through a 5G network, and the platform end saves the received video in a database for subsequent analysis and review;

[0018] The main analysis module compares and analyzes the deviation range within the normal error range, and when the deviation range continuously changes, the main analysis module transmits information of the corresponding monitoring device to the preprocessing module;

[0019] After receiving the information of the corresponding monitoring device, the preprocessing module analyzes the downhole monitoring video shot by the monitoring device near the monitoring device, judges whether the operation of the downhole worker is correct according to the downhole monitoring video, issues a reminder to the downhole worker and the manager when the operation of the downhole worker is wrong, and the downhole worker or the manager corrects the operation, and issues a reminder to the manager when the operation of the downhole worker is correct, and the manager takes corresponding measures.

[0020] Preferably, the mobile monitoring device comprises a box body, a partition plate is installed in the box body, the partition plate divides the space in the box body into an air inlet chamber and a detection chamber, and a gas detector is installed in the detection chamber.

[0021] A fan is installed on the partition plate, the fan sends the gas in the air inlet chamber into the detection chamber, a filter screen is installed on the side wall of the detection chamber, and the filter screen and the fan are located at two ends of the detection chamber, respectively.

[0022] A connecting seat is installed on the box body, the connecting seat communicates with the air inlet chamber, a gas guide cylinder is installed on the upper surface of the connecting seat, the gas guide cylinder is in a cylindrical shape and is used for guiding external gas into the air inlet chamber, the gas guide cylinder is composed of a plastic layer and a gas column, the gas column is located on the inner side of the plastic layer, the gas column maintains a fixed shape after being inflated, the gas columns are in communication with each other, a communication pipe is installed on the gas column, a gas pipe joint is installed on the end of the communication pipe away from the gas guide cylinder, and the worker inflates the gas column when placing the mobile monitoring device.

[0023] Preferably, the gas guide cylinder comprises a vertical cylinder and a horizontal cylinder, suction holes are uniformly arranged on the horizontal cylinder, an upper mounting plate is installed at the upper end in the vertical cylinder, an upper baffle is installed on the upper mounting plate, and a gap exists between the lower end of the upper baffle and a lower mounting plate.

[0024] A lower mounting plate is installed at the lower end in the vertical cylinder, a lower baffle is installed on the lower mounting plate, a gap exists between the lower baffle and the upper mounting plate, and the airflow in the vertical cylinder passes through in an S shape.

[0025] Preferably, the inner wall of the air cylinder is covered with a layer of fluff made of a hydrophilic material, and a water absorbent is placed on the upper surface of the lower mounting plate.

[0026] Preferably, the side wall of the air column is embedded with a limiting rope in a mesh shape.

[0027] The beneficial effects of the present application are as follows:

[0028] 1. The coal mine safety early warning system based on 5G, by setting the main analysis module, the auxiliary analysis module, the preprocessing module, the planning module and the reminding module, the data in the coal mine is transmitted comprehensively and timely under the 5G network, then, real-time monitoring, comparison and review are carried out, the abnormal situation in the coal mine is warned in advance, the safety of coal mine production is improved, and safety accidents are avoided.

[0029] 2. The coal mine safety early warning system based on 5G, by setting the air guide cylinder and the box body, when the gas detector is placed by the worker in the coal mine, a support does not need to be temporarily set, the gas detector can be placed in the box body, and the box body is placed on the ground, in the case that the gas detector is placed stably and safely, the air near the top of the roadway is collected and detected, the detection accuracy is improved, and the service life of the gas detector is prolonged. BRIEF DESCRIPTION OF DRAWINGS

[0030] The present application will be further described below with reference to the drawings.

[0031] Fig. 1 is the system block diagram of the present application;

[0032] Fig. 2 is the front view of the mobile monitoring equipment of the present application;

[0033] Fig. 3 is the structural schematic view of the mobile monitoring equipment of the present application;

[0034] Fig. 4 is the structural schematic view of the air guide cylinder in the mobile monitoring equipment of the present application;

[0035] In the figure: the box body 1, the partition plate 11, the air inlet chamber 12, the fan 121, the detection chamber 13, the filter screen 131, the gas detector 2, the connecting seat 3, the vertical cylinder 31, the horizontal cylinder 32, the air extraction hole 321, the plastic layer 33, the air column 4, the connecting pipe 41, the air pipe joint 42, the lower mounting plate 5, the upper mounting plate 51, the upper baffle 52, the lower baffle 53. DETAILED DESCRIPTION

[0036] In order to make the technical means, creative features, purposes and effects of the present application easy to understand, the present application is further described below in conjunction with specific embodiments.

[0037] As shown in Figs. 1 to 4 The coal mine safety early warning system based on 5G includes a platform end and a monitoring device. The platform end runs in the machine room server of the coal mine management center. The monitoring device is installed at various places in the roadway. The monitoring device exchanges data with the platform end through a 5G network. The platform end analyzes, monitors and warns about the received underground data. The platform end includes:

[0038] A main analysis module. The main analysis module compares the received underground data with the standard values specified in the relevant provisions to obtain a deviation range. If the deviation range exceeds the normal error range, the main analysis module sends a warning signal.

[0039] A reminder module. The reminder module sends an alarm to the coal mine management personnel after receiving the warning signal. The reminder module sends an alarm to the communication equipment carried by the underground workers through the 5G network. The underground workers receive the alarm and evacuate in a timely manner. The coal mine management personnel receive the alarm and handle it in a timely manner to assist the underground workers in evacuating.

[0040] The monitoring device detects various data underground and transmits them to the platform end through the 5G network. The data detected by the monitoring device includes but is not limited to carbon monoxide concentration, carbon dioxide concentration, methane concentration, hydrogen sulfide concentration, mine dust concentration, gas concentration, wind speed, air volume, temperature and humidity, air door state, equipment start and stop.

[0041] The monitoring device includes fixed monitoring devices and mobile monitoring devices. The fixed monitoring devices are installed at fixed intervals at various places in the underground mine. The mobile monitoring devices are carried by the underground workers and placed at the working face where the underground workers are located.

[0042] The monitoring device located in the underground transmits the underground data in the mine tunnel to the platform end through the 5G network, then the main analysis module of the platform end analyzes the received underground data, determines that the received underground data is in accordance with the standard value given in the relevant regulations, provisions and standards, and that the current received underground data has not changed compared with the past received underground data, so as to determine that the underground environment is normal, ensure the life safety of the workers working underground and the normal operation of various equipment, and prevent safety accidents, at the same time, after the main analysis module analyzes the received underground data, when the deviation range between the received underground data and the standard data exceeds the normal error range, the main analysis module determines that the underground environment is abnormal, at this time, the main analysis module sends a warning signal, after the warning signal is received by the reminding module, the reminding module sends a warning to the management personnel of the coal mine management center, so that the management personnel can timely respond and deal with it, and eliminate the abnormality in the embryonic state or reduce the loss caused by the abnormality, at the same time, the reminding module sends an alarm to the communication equipment carried by the workers working in the underground or the emergency communication equipment installed in the underground mine tunnel through the 5G network, so that the workers working in the underground can receive the alarm information in time, so as to timely and effectively evacuate from the mine tunnel and working face where the abnormality occurs, and ensure the personal safety of the workers working in the underground.

[0043] As an embodiment of the present application, the platform end further comprises:

[0044] The vice analysis module, the main analysis module transmits the information of the monitoring device corresponding to the abnormal underground data to the vice analysis module, the vice analysis module analyzes the correlation between the underground data uploaded by the monitoring device and the underground data uploaded by other monitoring devices near the monitoring device, and obtains a correlation coefficient;

[0045] When the correlation coefficient is greater than 95%, the vice analysis module determines that the change trend of the underground data detected by the monitoring device and other monitoring devices near the monitoring device is significantly correlated, that is, the detected underground data is correct, and the underground environment is indeed abnormal, and the vice analysis module sends a confirmation signal;

[0046] The reminding module sends an alarm to the coal mine management personnel and the workers working in the underground after receiving the confirmation signal and the warning signal at the same time, and the reminding module sends an alarm to the coal mine management personnel after receiving only the warning signal;

[0047] Due to the harsh environment in the well, the monitoring equipment is easy to be eroded by the harsh environment in the well when it is operated in the well for a long time, resulting in failure of the monitoring equipment or detection error. When the monitoring equipment transmits the downhole data with error to the platform end, the main analysis module on the platform end compares and analyzes the downhole data, and finds that the deviation range between the downhole data and the standard data exceeds the normal error range, and then the main analysis module sends a warning signal, so there are false positives and false negatives, which affects the normal operation of the coal mine.

[0048] When the main analysis module determines that an exception occurs, the main analysis module transmits the information of the monitoring equipment corresponding to the abnormal downhole data at the analysis position to the secondary analysis module. Since each monitoring equipment in the well has an independent number and the positions of the monitoring equipments are known, the secondary analysis module retrieves the downhole data uploaded by the monitoring equipment (such as one or two adjacent monitoring equipments) near the monitoring equipment with abnormal downhole data through the 5G network, and analyzes the correlation between the retrieved downhole data and the downhole data with abnormality, to obtain a correlation coefficient. Then, whether the change trend of the retrieved downhole data is significantly related to the change trend of the downhole data with abnormality is determined by the correlation coefficient. If there is a significant correlation between them, it can be determined that the position of the monitoring equipment corresponding to the downhole data with abnormality indeed has an abnormality, rather than a fault of the monitoring equipment or an error in the detection data. Thus, the secondary analysis module realizes the review of the result given by the main analysis module, and gives a confirmation signal. Then, the reminding module sends an alarm to the management personnel and the downhole workers when it receives the warning signal and the confirmation signal, reminding the management personnel to take measures and reminding the downhole workers to evacuate, reducing the possibility of a safety accident and protecting the personal safety of the downhole workers. When the reminding module receives the warning signal but does not receive the confirmation signal, it sends an alarm to the management personnel, which determines and confirms the abnormality. When the management personnel determines that there is indeed an abnormality, the reminding module sends an alarm to the downhole workers, reminding them to evacuate. When the management personnel determines that the abnormality is caused by a fault of the monitoring equipment or a detection error, the reminding module does not send an alarm to the downhole workers, thereby effectively avoiding false positives and false negatives caused by a fault of the monitoring equipment or a detection error, and avoiding affecting the normal operation of the coal mine. At the same time, the management personnel can organize maintenance in time when determining a fault of the monitoring equipment or a detection error, to ensure the accuracy of the downhole data received by the platform end and the normal operation of the early warning system.

[0049] As an embodiment of the present application, the platform end further comprises:

[0050] A planning module is configured to plan an evacuation path for underground workers according to a three-dimensional map of a mine tunnel, and a communication device carried by the underground workers is configured to report a current position of the underground workers to the planning module in real time through a 5G network, and the planning module is configured to send the evacuation path to the communication device carried by the underground workers through the 5G network;

[0051] When an abnormality occurs in the underground mine, the planning module calls the three-dimensional map of the mine tunnel stored in the database of the platform, and then determines a point and a range of the abnormality in the underground mine by detecting a number of a monitoring device that detects the abnormal underground data, and then plans an evacuation path for underground workers in a nearby tunnel, and at the same time, the planning module optimizes the evacuation path in real time according to the real-time positioning of the underground workers, so as to shorten the evacuation path, avoid that the underground workers cannot avoid the abnormal area when evacuating, and the evacuation path is redundant, which affects the evacuation efficiency of the underground workers and threatens the personal safety of the underground workers, and at the same time, the planning module sends the evacuation path to the communication device carried by the underground workers, and the communication device broadcasts the evacuation path to guide the workers, and at the same time, the planning module also sends the evacuation path to an emergency communication device near the position of the underground workers, so that the underground workers can still know the evacuation route and be guided when the communication device carried by the underground workers is abnormal, and the evacuation efficiency of the workers is improved.

[0052] As an embodiment of the present application, the platform further comprises:

[0053] A preprocessing module is configured to analyze underground monitoring videos, the monitoring devices include cameras, the cameras include fixed cameras installed in the tunnel and camera devices worn by the underground workers, the videos captured by the cameras in the monitoring devices are transmitted to the platform in real time through a 5G network, and the platform saves the received videos in a database for subsequent analysis and review;

[0054] The main analysis module compares and analyzes a deviation range within a normal error range, and when the deviation range changes continuously, the main analysis module transmits information of a corresponding monitoring device to the preprocessing module;

[0055] After receiving the information of the corresponding monitoring device, the preprocessing module analyzes underground monitoring videos captured by monitoring devices near the monitoring device, and the preprocessing module determines whether the operation of the underground workers is correct according to the underground monitoring videos, the preprocessing module sends a reminder to the underground workers and the management personnel when the operation of the underground workers is incorrect, the underground workers or the management personnel correct the operation, and the preprocessing module sends a reminder to the management personnel when the operation of the underground workers is correct, and the management personnel takes corresponding measures;

[0056] When it is found that the downhole data continuously fluctuates within the normal range, such as continuously increasing detected gas concentration, the pre-processing module analyzes the downhole monitoring video transmitted in real time through the 5G network, judges whether the operation performed or being performed by the downhole worker conforms to the regulation or has an error, and when the pre-processing module judges that the operation of the downhole worker has an error, the pre-processing module sends a reminder to the downhole worker to make the downhole worker stop or correct the operation in time to avoid safety hazards, and at the same time, the pre-processing module sends a reminder to the manager so that the manager can subsequently educate or train the downhole worker who has an error to improve the skill level and reduce the possibility of safety accidents, and at the same time, when the pre-processing module judges that the operation of the downhole worker has no error, the pre-processing module sends a reminder to the manager, at this time, the manager needs to judge the downhole state to determine the reason for the continuous change of the downhole data and whether the change will lead to the downhole data exceeding the safety range and causing safety hazards, and when the manager judges that safety hazards will occur, the manager should take measures in time, such as evacuating the downhole worker in advance, adjusting the running state of the downhole equipment, or overhauling the downhole equipment, so that the detected downhole data no longer continuously changes, the downhole state is stable, and safety accidents are avoided.

[0057] As an embodiment of the present application, the mobile monitoring device comprises a box body 1, a partition plate 11 is installed inside the box body 1, the partition plate 11 divides the space in the box body 1 into an air inlet chamber 12 and a detection chamber 13, and a gas detector 2 is installed in the detection chamber 13;

[0058] A fan 121 is installed on the partition plate 11, the fan 121 sends the gas in the air inlet chamber 12 into the detection chamber 13, a filter screen 131 is installed on the side wall of the detection chamber 13, and the filter screen 131 and the fan 121 are located at two ends of the detection chamber 13, respectively;

[0059] A connecting seat 3 is installed on the box body 1, the connecting seat 3 communicates into the air inlet chamber 12, a gas guide cylinder is installed on the upper surface of the connecting seat 3, the gas guide cylinder is composed of a cylinder shape, is used for guiding the external gas into the air inlet chamber 12, and is composed of a plastic layer 33 and a gas column 4, the gas column 4 is located on the inner side surface of the plastic layer 33, the gas column 4 keeps a fixed shape after being inflated, the gas columns 4 are communicated with each other, a connecting pipe 41 is installed on the gas column 4, a gas pipe joint 42 is installed on the end of the connecting pipe 41 away from the gas guide cylinder, and the worker inflates the gas column 4 when placing the mobile monitoring device;

[0060] When the worker arrives at the downhole working point, the worker takes the mobile monitoring device carried and places it near the working point to monitor the gas concentration at the working face in real time, so as to timely remind the worker, ensure the safety of coal mine production, and avoid safety accidents;

[0061] Meanwhile, the worker places the mobile detection device near the working face, so that the box body 1 is located on the ground of the roadway, then the worker fills gas into the air column 4 through the connecting pipe 41 by connecting the gas pipe joint 42 to the high-pressure gas cylinder installed on the box body 1 or connecting the gas pipe joint 42 to the hand pump, so that the air column 4 is inflated and forms a fixed shape, and then the plastic layer 33 is fixed in shape, so that the air guide cylinder is shaped and the upper end of the air guide cylinder is close to the top end of the roadway, so that the air guide cylinder contacts the gas accumulated in the upper part of the roadway, then the switch on the box body 1 is opened, so that the gas detector 2 in the detection chamber 13 and the fan 121 in the air inlet chamber 12 start to work (the motor in the fan 121 is an intrinsically safe motor or an explosion-proof motor to avoid safety accidents in the mine), the air near the top end of the roadway is sucked into the air inlet chamber 12 through the air guide cylinder by the fan 121, and then the sucked air is discharged from the filter screen 131 of the detection chamber 13 (the filter screen 131 intercepts coal dust, water vapor and the like in the roadway into the detection chamber 13 to avoid adverse effects on the gas detector 2), when the sucked air passes through the detection chamber 13, the gas detector 2 detects the gas content in the passing air to improve the detection accuracy;

[0062] Meanwhile, since the valve is arranged on the connecting pipe 41, the gas filled into the air column 4 by the high-pressure gas cylinder or the hand pump will not be discharged by itself, avoiding the situation that the air pressure in the air column 4 is insufficient and the air guide cylinder cannot maintain the shape during use of the mobile detection device, affecting the air extraction of the fan 121 at the top end of the roadway, and at the same time, the valve is opened to release the gas in the air column 4 when not in use, so that the air column 4 can be folded and stored, facilitating the carrying of the mobile detection device, in addition, after the gas in the used high-pressure gas cylinder is released, the gas is refilled when returning to the ground to be reused, avoiding waste;

[0063] Meanwhile, since the air guide cylinder is installed on the box body 1 through the connecting seat 3, and the connecting seat 3 and the box body 1 are connected by clamping or threaded connection, when the air guide cylinder is damaged in the mine, the air guide cylinder can be directly replaced through the connecting seat 3, thereby facilitating the maintenance and use of the mobile detection device;

[0064] Meanwhile, the gas detector 2 is installed in the detection chamber 13 and protected by the box body 1, reducing the influence of the harsh environment in the mine on the gas detector 2 and prolonging the service life and detection accuracy of the gas detector 2, and at the same time, the box body 1 is placed on the ground of the roadway and the air near the top end of the roadway is extracted through the air guide cylinder, which can effectively improve the accuracy of gas concentration detection, avoid the situation that the gas is accumulated in the upper part of the coal mine roadway due to its relatively low density, and the existing portable gas detector 2 is not easy to be fixed near the top of the roadway, causing errors in gas concentration detection, and ensuring production safety.

[0065] At the same time, since the air guide cylinder is composed of the air column 4 and the plastic layer 33, the mass is relatively small, so the center of gravity of the mobile detection device is close to the box body 1 and close to the ground, thereby effectively improving the stability of the mobile detection device, avoiding the fact that in the prior art, the gas detector 2 is lifted and fixed to the position close to the top of the roadway by using a support, the center of gravity of the gas detector 2 and the support is high, the stability is poor, the support is prone to falling, which may cause the gas detector 2 to be injured, and avoiding the fact that in the prior art, the gas detector 2 is fixed to the side wall of the roadway by a hook and a handle, which is not firm and is prone to falling, and is inconvenient to adjust after being fixed.

[0066] As an embodiment of the present application, the air guide cylinder comprises a vertical cylinder 31 and a horizontal cylinder 32, the horizontal cylinder 32 is uniformly provided with air extraction holes 321, the upper end in the vertical cylinder 31 is provided with an upper mounting plate 51, the upper mounting plate 51 is provided with an upper baffle 52, and a gap exists between the lower end of the upper baffle 52 and a lower mounting plate 5;

[0067] The lower end in the vertical cylinder 31 is provided with the lower mounting plate 5, the lower mounting plate 5 is provided with a lower baffle 53, and a gap exists between the lower baffle 53 and the upper mounting plate 51, and the airflow in the vertical cylinder 31 passes through in an S shape;

[0068] Since the underground environment is poor, when the fan 121 operates, the air in the roadway is extracted into the box body 1 through the air guide cylinder, at this time, the coal dust and other impurities in the air in the roadway will pass through the air guide cylinder together with the airflow and enter the inside of the box body 1, and the coal dust and other impurities entering the box body 1 will affect the gas detector 2 in the detection chamber 13, causing the detection probe on the gas detector 2 to be covered and corroded by dust, affecting the detection accuracy and service life of the gas detector 2, and at the same time, by arranging the upper mounting plate 51, the lower mounting plate 5, the upper baffle 52 and the lower baffle 53 in the vertical cylinder 31 of the air guide cylinder, the extracted air needs to pass through the S-shaped channel when passing through the vertical cylinder 31, the flow path of the airflow is prolonged, the coal dust and other impurities carried in the airflow are settled in the space composed of the lower baffle 53, the upper surface of the lower mounting plate 5 and the side wall of the vertical cylinder 31, the number of coal dust and other impurities entering the box body 1 is effectively reduced, the influence on the gas detector 2 is reduced, and the service life and detection accuracy of the gas detector 2 are improved.

[0069] As an embodiment of the present application, a fluff layer is covered on the inner wall of the air filling cylinder, the fluff layer is made of a hydrophilic material, and a water absorbing agent is placed on the upper surface of the lower mounting plate 5;

[0070] Because water needs to be sprayed to the working when coal mining, thereby reducing the generation of coal dust, therefore, the humidity in the roadway of underground is larger, the water vapor content is high, when extracting the air in the roadway to carry out gas detection, the water vapor contained in the air will also enter into the box 1 along with the airflow, which will have adverse effects on the gas detector 2, affect the detection accuracy and the service life of the gas detector 2, at the same time, by covering the fluff layer made of hydrophilic material on the inner wall of the air guide cylinder, the water vapor in the air entering the air guide cylinder is adsorbed and collected, so that the water vapor is aggregated into water droplets, which are then absorbed by the water absorbing agent placed on the upper surface of the lower mounting plate 5, reducing the amount of water vapor entering the box 1, reducing the adverse effects on the gas detector 2, improving the detection accuracy and the service life of the gas detector 2;

[0071] At the same time, openings are formed on the side wall of the air guide cylinder, and magic tape or zipper is arranged at the openings, so that after the water absorbing agent absorbs too much water, the worker can take out and replace the water absorbing agent from the air guide cylinder without replacing the entire air guide cylinder, reducing the use cost, at the same time, during use, the openings can not be arranged on the air guide cylinder, but the connecting seat 3 is taken off from the box 1, then the worker slowly rotates the air guide cylinder along the S shape, so that the water absorbing agent placed in the air guide cylinder falls from the position close to the connecting seat 3, and then the new water absorbing agent is put into the air guide cylinder in the opposite direction.

[0072] As an embodiment of the present application, the side wall of the air column 4 is embedded with a limiting rope, and the limiting rope is in a mesh shape;

[0073] By embedding the limiting rope in the side wall of the air column 4, the strength of the air column 4 is improved, so that the air column 4 does not burst due to the operation error of the worker during inflation, so that the air guide cylinder cannot work normally, at the same time, due to the limitation of the shape of the air column 4 by the limiting rope, the air column 4 can present a specific shape after inflation, so that the shape of the air column 4 changes after inflation due to the influence of the internal air pressure, affecting the normal use of the air guide cylinder.

[0074] The specific working process is as follows:

[0075] The underground monitoring device transmits the underground data in the mine tunnel to the platform end through the 5G network, then the main analysis module of the platform end analyzes the received underground data, determines that the received underground data meets the standard values given in the relevant regulations, provisions and standards, and that there is no mutation compared with the past received underground data, so as to determine that the underground environment is normal, at the same time, when the main analysis module analyzes the received underground data and finds that the deviation range between the received underground data and the standard data exceeds the normal error range, the main analysis module determines that the underground environment is abnormal, at this time, the main analysis module sends a warning signal, after the warning signal is received by the reminding module, the reminding module sends a warning to the management personnel of the coal mine management center, at the same time, the reminding module sends an alarm to the communication equipment carried by the workers working underground or the emergency communication equipment installed in the underground mine tunnel through the 5G network;

[0076] When the main analysis module determines that an exception occurs, the main analysis module transmits the information of the monitoring device corresponding to the abnormal underground data at the analysis to the secondary analysis module, the secondary analysis module retrieves the underground data uploaded by the monitoring devices near the monitoring device of the abnormal underground data, and analyzes the correlation between the retrieved underground data and the abnormal underground data to obtain a correlation coefficient, if there is a significant correlation between the two, the secondary analysis module reviews the result given by the main analysis module and gives a confirmation signal, then the reminding module sends an alarm to the management personnel and the workers underground when receiving the warning signal and the confirmation signal, when the reminding module receives the warning signal and does not receive the confirmation signal, the reminding module sends an alarm to the management personnel, when the management personnel determines that an exception indeed occurs, the reminding module sends an alarm to the workers underground again;

[0077] When an exception occurs underground, the planning module plans the evacuation path of the underground workers in the nearby tunnel, at the same time, the planning module sends the evacuation path to the communication equipment carried by the underground workers;

[0078] When it is found that the underground data continuously fluctuates within the normal range, the preprocessing module analyzes the underground monitoring video to determine whether the operation of the underground workers has been or is being performed in accordance with the provisions, and whether there is a misoperation, when the preprocessing module determines that the operation of the underground workers has an error, the preprocessing module sends a reminder to the underground workers and the management personnel, at the same time, when the preprocessing module determines that the operation of the underground workers has no error, the preprocessing module sends a reminder to the management personnel;

[0079] When the workers arrive at the underground work point, the workers take off the mobile monitoring device carried and place it near the work point to monitor the gas concentration of the working face in real time;

[0080] Meanwhile, after the workers place the mobile detection equipment near the working face, so that the box 1 is located on the ground of the tunnel, the workers connect the air pipe connector 42 to the high-pressure gas cylinder installed on the box 1 or connect the air pipe connector 42 to the manual pump, and then fill the gas column 4 through the connecting pipe 41, so that the gas column 4 expands and forms a fixed shape, thereby driving the plastic layer 33 to fix its shape, so that the air guide tube is formed and the upper end of the air guide tube is close to the top of the tunnel. Then, the switch on the box 1 is turned on, so that the gas detector 2 in the detection chamber 13 and the fan 121 in the air inlet chamber 12 start. The fan 121 draws the air near the top of the tunnel into the air inlet chamber 12 through the air guide tube, and then the drawn air passes through the detection chamber 13 and is discharged from the filter screen 131. When the drawn air passes through the detection chamber 13, the gas detector 2 detects the gas content in the air passing through it.

[0081] By installing an upper mounting plate 51, a lower mounting plate 5, an upper baffle 52, and a lower baffle 53 inside the vertical cylinder 31 of the air guide tube, the extracted air needs to pass through an S-shaped channel when passing through the vertical cylinder 31, thus extending the airflow path.

[0082] By covering the inner wall of the air guide tube with a fluff layer made of hydrophilic material, water vapor in the air entering the air guide tube is adsorbed and collected, causing the water vapor to aggregate into water droplets, which are then absorbed by the water absorbent placed on the upper surface of the lower mounting plate 5.

[0083] By embedding restraining ropes in the sidewalls of the air column 4, the strength of the air column 4 is increased, and the air column 4 takes on a specific shape after being inflated.

[0084] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A 5G-based coal mine safety warning system, comprising a platform end and a monitoring device, the monitoring device and the platform end exchange data with each other through a 5G network, the platform end analyzes, monitors and warns the received underground data, characterized in that: The platform end comprises: ​ The main analysis module compares the received downhole data with the standard values specified in the relevant provisions to obtain a deviation range, and issues a warning signal if the deviation range exceeds the normal error range; The alert module sends an alarm to the coal mine managers after receiving the warning signal, and sends an alarm to the communication equipment carried by the underground workers through the 5G network; The monitoring device detects various data underground and transmits them to the platform end through the 5G network; The monitoring device includes fixed monitoring devices and mobile monitoring devices, the fixed monitoring devices are installed at fixed intervals in the underground mine tunnels, and the mobile monitoring devices are carried by the underground workers and placed at the working face where the underground workers are located; The platform end further comprises: The secondary analysis module receives information about the monitoring device corresponding to the abnormal downhole data from the main analysis module, and performs correlation analysis on the downhole data uploaded by the monitoring device and the downhole data uploaded by other monitoring devices near the monitoring device to obtain a correlation coefficient; When the correlation coefficient is greater than 95%, the secondary analysis module sends a confirmation signal; The alert module sends an alarm to the coal mine managers and underground workers after receiving the confirmation signal and the warning signal, and sends an alarm to the coal mine managers after receiving only the warning signal.

2. The 5G-based coal mine safety early warning system according to claim 1, characterized in that: The platform end further comprises: The planning module is used to plan the evacuation path of the underground workers according to the three-dimensional map of the mine tunnel, the communication equipment carried by the underground workers reports their location in real time to the planning module through the 5G network, and the planning module sends the evacuation path to the communication equipment carried by the underground workers through the 5G network.

3. The 5G-based coal mine safety early warning system according to claim 1, characterized in that: The platform end further comprises: The preprocessing module is used to analyze the underground monitoring video; The main analysis module compares and analyzes the deviation range within the normal error range, and transmits information about the corresponding monitoring device to the preprocessing module when the deviation range changes continuously; After receiving the information about the corresponding monitoring device, the preprocessing module analyzes the underground monitoring video taken by the monitoring devices near the monitoring device, determines whether the operation of the underground workers is correct based on the underground monitoring video, sends a reminder to the underground workers and the managers if the operation of the underground workers has errors, and the underground workers or the managers correct the errors, sends a reminder to the managers if the operation of the underground workers is correct, and the managers take appropriate measures.

4. The 5G-based coal mine safety early warning system according to claim 1, characterized in that: The mobile monitoring device comprises a box body (1), a partition plate (11) is installed inside the box body (1), the box body (1) is divided into an air inlet chamber (12) and a detection chamber (13) by the partition plate (11), and a gas detector (2) is installed in the detection chamber (13); The partition plate (11) is provided with a fan (121) which sends the gas in the air inlet chamber (12) into the detection chamber (13), and the side wall of the detection chamber (13) is provided with a filter screen (131) which is located at the two ends of the detection chamber (13) respectively with the fan (121); The box body (1) is provided with a connecting seat (3) which is communicated into the air inlet chamber (12), and the upper surface of the connecting seat (3) is provided with a gas guiding cylinder which is composed of a plastic layer (33) and a gas column (4), the gas column (4) keeps fixed shape after being inflated, and the gas columns (4) are communicated with each other, and the worker inflates the gas column (4) when placing the movement monitoring device.

5. The 5G-based coal mine safety early warning system according to claim 4, characterized in that: The gas guiding cylinder comprises a vertical cylinder (31) and a horizontal cylinder (32), the horizontal cylinder (32) is uniformly provided with air extraction holes (321), and the upper end of the vertical cylinder (31) is provided with an upper mounting plate (51), and the upper mounting plate (51) is provided with an upper baffle (52). The lower end of the vertical cylinder (31) is provided with a lower mounting plate (5), the lower mounting plate (5) is provided with a lower baffle (53), and the airflow in the vertical cylinder (31) passes through in S shape.

6. The 5G-based coal mine safety early warning system according to claim 5, characterized in that: The inner wall of the inflated cylinder is covered with a fluff layer, and the upper surface of the lower mounting plate (5) is placed with a water absorbing agent.

7. The 5G-based coal mine safety early warning system of claim 4, characterized in that: The side wall of the gas column (4) is embedded with a limiting rope which is in mesh shape.

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