Coal mine safety monitoring and early warning method and system, terminal and readable storage medium

Abstract

The invention relates to a coal mine safety monitoring and early warning method and system, a terminal and a readable storage medium, and belongs to the technical field of coal mine safety monitoring, the monitoring and early warning method comprises the following steps: constructing a position distribution diagram of a position where gas is easy to gather, the position distribution diagram comprising position information of gas monitoring points and serial number information of the gas monitoring points; acquiring the gas concentration value of each monitoring point at the current moment; sequentially judging whether the gas concentration value of each monitoring point exceeds a preset alarm concentration threshold value or not; if yes, counting the number of early warning monitoring points; determining an early warning level according to the number of the early warning monitoring points; searching a corresponding response measure from a pre-stored measure response table according to the early warning level; and sending an early warning signal matched with the response measure. The method has the beneficial effects that potential safety hazards are reduced, and the danger degree of gas leakage is visually known.

Description

Technical Field

[0001] This application relates to the technical field of coal mine safety monitoring, and in particular to a coal mine safety monitoring and early warning method, system, terminal and readable storage medium. Background Art

[0002] Coal mine safety monitoring is one of the important measures to ensure coal mine safety. In related technologies, for the monitoring of gas, gas sensors are usually installed inside the mine to detect the gas concentration; once the gas concentration exceeds the safety limit, the gas sensor will issue an alarm to notify the miners to take appropriate measures. After the gas sensor issues an alarm, the management can only determine that gas leakage has occurred and cannot clearly understand the degree of danger. Therefore, actual investigation is still required to determine more accurate countermeasures based on the degree of danger; if actual investigation is carried out, there will be certain safety hazards. Summary of the Invention

[0003] In order to reduce safety hazards and intuitively understand the degree of danger of gas leakage, this application provides a coal mine safety monitoring and early warning method, system, terminal and readable storage medium.

[0004] In a first aspect, this application provides a coal mine safety monitoring and early warning method, adopting the following technical solution: A coal mine safety monitoring and early warning method includes: Construct a location distribution map of gas accumulation-prone areas, where the location distribution map includes the location information and number information of gas monitoring points; Obtain the gas concentration values of each monitoring point at the current moment; Sequentially determine whether the gas concentration value of each monitoring point exceeds a preset alarm concentration threshold; If so, count the number of early warning monitoring points; Determine the early warning level according to the number of early warning monitoring points; According to the early warning level, find the corresponding countermeasures from the pre-stored measure response table; Send an early warning signal matching the countermeasures.

[0005] By adopting the above technical solution, a location distribution map of areas where gas is likely to accumulate (leak) can be constructed based on historical similar coal mine gas leakage situations. Each location can be used as a gas monitoring point and numbered. The gas concentration values of each gas monitoring point are monitored in real time, and the gas concentration values are judged. If the gas concentration value of a certain gas monitoring point exceeds the alarm concentration threshold, then this gas monitoring point is determined as an early warning monitoring point. The number of early warning monitoring points at the current moment is counted, and then according to the number of early warning monitoring points, the early warning level is determined. Then, from the measure correspondence table, the corresponding measures associated with the early warning level are found, and thus an early warning signal associated with the measures is sent, enabling the management personnel to directly understand the degree of gas leakage danger more intuitively based on the early warning signal without actual investigation, so as to reduce potential safety hazards.

[0006] Optionally, the step of determining the early warning level according to the number of early warning monitoring points includes: Obtain the grading range of the early warning level, and the early warning level is divided into four levels; Obtain the density of the early warning monitoring points; According to the density and the number n of early warning monitoring points, obtain the early warning level value p; p = (aq * bn) %, p belongs to [0, 1], q is the assigned value of the density of the early warning monitoring points, a is the weight of the preset density of the early warning monitoring points, and b is the weight of the preset number of early warning monitoring points; Determine the corresponding early warning level according to the grading range to which the early warning level value p belongs.

[0007] By adopting the above technical solution, if the number of early warning monitoring points is large and the density is high (the distribution is concentrated), it indicates that the gas leakage is concentrated in a certain place, so it is easy to control, and thus the danger level is relatively small; if the density is small, it indicates that the gas leakage locations are relatively scattered and not easy to control, so the danger level is relatively high. A high danger level means a high early warning level; therefore, the early warning level is actually related to the number of early warning monitoring points and the density of the early warning monitoring points.

[0008] Optionally, the monitoring and early warning method further includes: Obtain the personnel location information of the underground personnel; Based on the personnel location information, determine the movement path of the underground personnel; Judge whether the gas monitoring points before and after the movement path are both early warning monitoring points; If so, send a route conversion instruction; If the gas monitoring point in front of the movement path is an early warning monitoring point, send a retreat instruction; If the gas monitoring point behind the movement path is an early warning monitoring point, send a keep - away instruction.

[0009] By adopting the above technical solution, after determining the movement path of the underground personnel based on the personnel position information of the underground personnel, it can be judged whether the gas monitoring points before and after the movement path are both warning monitoring points. If so, it indicates that leaks have occurred both before and after the movement path. Therefore, it is dangerous for the underground personnel to move forward or backward. Therefore, by sending a route conversion instruction, the underground personnel can change the movement path according to the route conversion instruction to evacuate; if only the gas monitoring point in front of the movement path sends a leak, they can retreat, and if only the gas monitoring point behind the movement path leaks, they can move forward to stay away.

[0010] Optionally, the monitoring and warning method further includes: Obtain the gas diffusion speed of the warning monitoring point; Based on the gas diffusion speed, obtain the diffusion distance of the gas per unit time; Based on the average speed of the underground personnel's movement, obtain the movement distance of the underground personnel per unit time; Judge whether the diffusion distance is not less than the movement distance; If so, send the first safety speed information.

[0011] By adopting the above technical solution, after the gas monitoring point leaks, the gas diffusion speed can be obtained, and based on the gas diffusion speed, the diffusion distance of the gas per unit time can be obtained; and based on the average speed of the underground personnel's movement, the movement distance of the underground personnel per unit time can be obtained, so as to judge whether the diffusion distance is greater than or equal to the movement distance. If so, it means that if the underground personnel move at a normal pace, they will probably be harmed by the gas. Therefore, the first safety speed information can be sent so that the underground personnel move at the first safety speed, thus avoiding the harm of the gas to the underground personnel.

[0012] Optionally, after sending the route conversion instruction, it includes: Obtain the estimated movement duration of the underground personnel according to the average speed and the distance from the current personnel position to the road fork position; Obtain the estimated diffusion distance according to the estimated movement duration and the gas diffusion speed; Judge whether the estimated diffusion distance covers the road fork; If so, send the second safety speed information.

[0013] By adopting the above technical solution, when gas leaks occur both in front of and behind the moving path, it is necessary to determine whether the gas has diffused to the road fork when the underground personnel move to the road fork. Therefore, first predict the estimated moving duration for the underground personnel to move to the road fork at the average speed, and then obtain the estimated gas diffusion distance based on the estimated moving duration and the gas diffusion speed, so as to determine whether the estimated diffusion distance covers the road fork. If so, it means that the underground personnel need to increase their speed, and the second safety speed information can be sent to enable the underground personnel to move at the second speed.

[0014] Optionally, the step of obtaining the gas diffusion speed includes: Obtain the current environmental temperature, environmental humidity, environmental wind speed, and instantaneous concentration at the time of gas leakage; Based on the current environmental temperature, the environmental humidity, the environmental wind speed, the instantaneous concentration, and a pre-constructed speed prediction model, obtain the gas diffusion speed.

[0015] Optionally, the steps for constructing the speed prediction model include: Arrange multiple gas concentration detection points along the gas diffusion path; Successively obtain the duration and distance for the gas to reach multiple detection points; Based on the duration and distance corresponding to each detection point, obtain the corresponding instantaneous speed; Based on multiple instantaneous speeds, obtain the average diffusion speed; Successively input multiple historical average diffusion speeds, historical environmental temperatures, historical environmental humidities, historical environmental wind speeds, and historical instantaneous concentrations into the initially built speed model v = w1p + w2x + w3y + w4z to obtain w1, w2, w3, and w4; where v is the average diffusion speed, p is the assignment of the gas instantaneous concentration, x is the environmental temperature assignment, y is the environmental humidity assignment, z is the environmental wind speed assignment, w1 is the weight of the gas instantaneous concentration, w2 is the weight of the environmental temperature, w3 is the weight of the environmental humidity, and w4 is the weight of the environmental wind speed.

[0016] By adopting the above technical solution, since the gas diffusion speed is fast when the instantaneous concentration of gas leakage is high, the environmental temperature is high, the environmental humidity is low, and the environmental wind speed is high, the gas diffusion speed is related to three factors: temperature, humidity, wind speed, and the instantaneous concentration of gas. Therefore, the gas diffusion speed at a certain temperature, humidity, and wind speed can be obtained, and after obtaining it multiple times, a diffusion speed change curve can be generated.

[0017] In a second aspect, the present application provides a coal mine safety monitoring and early warning system, adopting the following technical solution: A coal mine safety monitoring and early warning system includes: A location distribution construction module for constructing a location distribution map of areas where gas is likely to accumulate, the location distribution map including the location information and number information of gas monitoring points; A gas concentration acquisition module for acquiring the gas concentration values of each monitoring point at the current moment; A judgment module for sequentially judging whether the gas concentration value of each monitoring point exceeds a preset alarm concentration threshold; A statistics module for counting the number of early warning monitoring points; A level determination module for determining the early warning level according to the number of early warning monitoring points; A search module for searching for corresponding countermeasures from a pre-stored measure response table according to the early warning level; A signal sending module for sending an early warning signal matching the countermeasure.

[0018] By adopting the above technical solution, a location distribution map of areas where gas is likely to accumulate (leak) can be constructed according to historical similar coal mine gas leakage situations. Each location can be used as a gas monitoring point and numbered. The gas concentration values of each gas monitoring point are monitored in real time and judged. If the gas concentration value of a certain gas monitoring point exceeds the alarm concentration threshold, then this gas monitoring point is determined as an early warning monitoring point. The number of early warning monitoring points at the current moment is counted, and then the early warning level is determined according to the number of early warning monitoring points. Then, the countermeasures associated with the early warning level are found from the measure response table, and the early warning signal associated with the countermeasures is sent, so that the management personnel can directly understand the degree of gas leakage danger more intuitively according to the early warning signal without actual investigation, so as to reduce potential safety hazards.

[0019] In a third aspect, the present application provides a terminal, adopting the following technical solution: A terminal, comprising: A memory storing a coal mine safety monitoring and early warning program; A processor for executing the program stored on the memory to implement the steps of the above coal mine safety monitoring and early warning method.

[0020] In a fourth aspect, the present application provides a computer-readable storage medium, adopting the following technical solution: A computer-readable storage medium storing a computer program that can be loaded and executed by a processor to implement the above coal mine safety monitoring and early warning method.

[0021] In summary, the present application has at least the following beneficial effects: 1. The purpose of constructing a location distribution map of gas-accumulating areas, obtaining the gas concentration values of each monitoring point at the current moment, then sequentially determining whether the gas concentration value of each monitoring point exceeds the alarm concentration threshold, further counting the number of early-warning monitoring points, thereby determining the early-warning level, and then sending a matching early-warning signal is as follows: if the gas concentration value of a certain gas monitoring point exceeds the alarm concentration threshold, then this gas monitoring point is determined as an early-warning monitoring point; count the number of early-warning monitoring points at the current moment, thereby determine the early-warning level according to the number of early-warning monitoring points, and then find the corresponding measures associated with the early-warning level from the measure correspondence table, thereby sending an early-warning signal associated with the corresponding measures, so that the management personnel can directly understand the degree of gas leakage danger more intuitively according to the early-warning signal without actual investigation, in order to reduce potential safety hazards.

[0022] 2. The purpose of obtaining the gas diffusion speed of the early-warning monitoring point, obtaining the diffusion distance of the gas per unit time according to the diffusion speed, and determining whether the diffusion distance is less than the moving distance of underground personnel is as follows: if the diffusion distance is greater than or equal to the moving distance, it means that if underground personnel move at a normal pace, they will probably be harmed by the gas. Therefore, the first safe speed information can be sent to make the underground personnel move at the first safe speed, thereby avoiding the harm of the gas to the underground personnel.

[0023] 3. The purpose of sending the second safe speed information is that when gas leaks occur both in front of and behind the moving path, it is necessary to determine whether the gas diffuses to the road fork when the underground personnel move to the road fork. Therefore, first predict the expected moving duration for the underground personnel to move to the road fork at the average speed, and then obtain the expected diffusion distance of the gas according to the expected moving duration and the gas diffusion speed, so as to determine whether the expected diffusion distance covers the road fork. If so, it means that the underground personnel need to speed up, and the second safe speed information can be sent to make the underground personnel move at the second speed. Description of the Drawings

[0024] Figure 1 is the flowchart of the implementation manner of the first embodiment of the method of the present application; Figure 2 is the flowchart of a specific step of S150; Figure 3 is the flowchart of another implementation manner of the method embodiment of the present application; Figure 4 is the flowchart of still another implementation manner of the method embodiment of the present application; Figure 5 is the flowchart of the generation steps of the speed prediction model; Figure 6 is the flowchart of the steps that can be executed after sending the route conversion instruction; Figure 7It is the structural block diagram of the first implementation manner of the system embodiment of the present application; Figure 8 It is the structural block diagram of another implementation manner of the system embodiment of the present application.

[0025] Explanation of reference numerals: 110, position distribution construction module; 120, gas concentration acquisition module; 130, judgment module; 140, statistics module; 150, level determination module; 151, warning level division unit; 152, warning density acquisition unit; 153, warning level value acquisition unit; 154, level determination unit; 160, search module; 170, signal sending module; 180, position acquisition module; 190, instruction sending module; 210, speed acquisition module; 220, distance acquisition module; 230, information sending module; 240, duration acquisition module. Specific implementation manner

[0026] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the following will combine the attached Figure 1 - attached Figure 8 drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts belong to the scope of protection of the present invention.

[0027] The first embodiment of the present application discloses a coal mine safety monitoring and warning method. Referring to Figure 1 , as an implementation manner of the monitoring and warning method, the monitoring and warning method may include S110 - S170: S110, construct a position distribution map of gas - prone aggregation areas, where the position distribution map includes the position information and number information of gas monitoring points; S120, obtain the gas concentration values of each monitoring point at the current moment; S130, sequentially judge whether the gas concentration value of each monitoring point exceeds a preset alarm concentration threshold; S140, if so, count the number of warning monitoring points; S150, determine the warning level according to the number of warning monitoring points; S160, according to the warning level, search for corresponding countermeasures from a pre - stored measure response table; S170, send a warning signal matching the countermeasure.

[0028] Specifically, based on the locations of leakage points during historical gas leakage in similar coal mines, a location distribution map of gas-accumulating areas can be constructed, and gas concentration sensors are arranged at each gas monitoring point to detect the gas concentration in real time. Each gas monitoring point corresponds to a unique number.

[0029] The alarm concentration threshold is a value close to the allowable gas concentration value in the coal mine. For example, if the allowable gas concentration value is 1.5%, the alarm concentration threshold can be set to 1.4%.

[0030] The measure response table includes associated warning levels, response measures, and warning signals; among them, one warning level can be associated with multiple response measures. The warning levels can be divided into four levels, and the higher the warning level, the greater the degree of danger.

[0031] Refer to Figure 2 , for S150, a specific step can include S151 - S154: S151, obtain the grading range of the warning level; S152, obtain the density of warning monitoring points; S153, based on the density and the number n of warning monitoring points, obtain the warning level value p; p = (aq * bn)%, p belongs to [0, 1], q is the assigned value of the warning monitoring point density, a is the weight of the preset warning monitoring point density, and b is the weight of the preset number of warning monitoring points; S154, determine the corresponding warning level according to the grading range to which the warning level value p belongs.

[0032] Specifically, for example, (0 - 0.25) is the first-level warning, [0.25 - 0.5) is the second-level warning, [0.5 - 0.75) is the third-level warning, and [0.75 - 1] is the fourth-level warning. The density of warning monitoring points can be pre-assigned according to the distribution of the number of warning monitoring points, and the assignment is between [0, 1]. The closer the assignment is to 1, the greater the density and the denser the distribution of warning monitoring points. a = b = 0.5.

[0033] Refer to Figure 3 , as another implementation manner of this monitoring and warning method, this monitoring and warning can also include S310 - S360: S310, obtain the personnel location information of underground personnel; S320, based on the personnel location information, determine the movement path of underground personnel; S330, determine whether the gas monitoring points before and after the movement path are both warning monitoring points; S340, if so, send a route conversion instruction; S350, if the gas monitoring point in front of the movement path is a warning monitoring point, send a retreat instruction; S360, if the gas monitoring point behind the movement path is a warning monitoring point, send a distance-away instruction.

[0034] Specifically, the location of the underground personnel can be determined by obtaining the location of the mobile terminals (such as smart watches, smart phones, etc.) carried by the underground personnel; based on the personnel location, the location of the underground personnel in the coal mine can be determined, and combined with the internal structure of the coal mine, the movable path of the underground personnel (i.e., the current route where the underground personnel are located) can be determined. After sending the instruction, the broadcasting device installed in the coal mine will broadcast the relevant instruction. The route conversion instruction can be "advance x meters and evacuate from the fork", where x refers to the distance to the fork, and the fork location is a fixed location; after the underground personnel enter the fork, the fork is closed, so that the ventilation system extracts the gas on the movement path. The retreat instruction can be "there is a leak ahead, need to return"; the distance-away instruction can be "there is a leak behind, stay away as soon as possible". It should be noted that when there is a leak behind the movement path, the underground personnel can also evacuate from the fork.

[0035] Refer to Figure 4 , as another implementation manner of this warning monitoring method, this warning monitoring method further includes S410 - S450: S410, obtain the gas diffusion speed of the warning monitoring point; S420, based on the gas diffusion speed, obtain the diffusion distance of the gas per unit time; S430, based on the average speed of the underground personnel's movement, obtain the movement distance of the underground personnel per unit time; S440, determine whether the diffusion distance is not less than the movement distance; S450, if so, send the first safety speed information.

[0036] Specifically, for S410, specifically, the current ambient temperature, ambient humidity, and ambient wind speed can be obtained through the temperature sensor, humidity sensor, and wind speed sensor installed in the coal mine respectively. Then, the ambient temperature, ambient humidity, ambient wind speed, and the instantaneous concentration of gas leakage collected by the gas sensor are input into the pre-constructed speed prediction model, so as to obtain the gas diffusion speed.

[0037] The unit time can refer to 1 minute. The average speed of the underground personnel's movement can be obtained according to the historical movement data. If the average speed is 70 m / min, the first safety speed information can be "evacuate at a speed of 80 m / min" or "run and move".

[0038] Refer to Figure 5 , as for the generation steps of the speed prediction model, it can include S411 - S415: S411, arrange multiple gas concentration detection points along the gas diffusion path; S412. Obtain the duration and distance for the gas to reach multiple detection points in sequence; S413. Obtain the corresponding instantaneous velocity according to the duration and distance corresponding to each detection point; S414. Obtain the average diffusion velocity according to multiple instantaneous velocities; S415. Input multiple historical average diffusion velocities, historical ambient temperatures, historical ambient humidities, historical ambient wind speeds, and historical instantaneous concentrations into the established initial velocity model v = w1p + w2x + w3y + w4z in sequence to obtain w1, w2, w3, and w4.

[0039] Among them, v is the average diffusion velocity, p is the assignment of the instantaneous gas concentration, x is the assignment of the ambient temperature, y is the assignment of the ambient humidity, z is the assignment of the ambient wind speed, w1 is the weight of the instantaneous gas concentration, w2 is the weight of the ambient temperature, w3 is the weight of the ambient humidity, and w4 is the weight of the ambient wind speed.

[0040] A gas concentration sensor is installed at each gas concentration detection point, and the gas detection point is associated with a unique number. After the gas diffuses to the first detection point, obtain the duration of the gas leakage to this detection point and the distance between this detection point and the gas monitoring point, so as to obtain the corresponding instantaneous velocity according to s = vt. After obtaining the instantaneous velocities of each detection point, sum and average the multiple instantaneous velocities to obtain the average diffusion velocity, and record the ambient temperature, ambient humidity, ambient wind speed, and instantaneous gas leakage concentration at this time. Input multiple historical record data (average diffusion velocity, ambient temperature, ambient humidity, and ambient wind speed) into the pre-established initial velocity model to obtain the weight w1 of the instantaneous gas concentration, the weight w2 of the ambient temperature, the weight w3 of the ambient humidity, and the weight w4 of the ambient wind speed; thus, obtain the final velocity prediction model.

[0041] Refer to Figure 6 , it should be noted that after S340, S341 - S344 can be executed: S341. Obtain the estimated moving duration of the underground personnel according to the average velocity and the distance from the current personnel position to the road fork position; S342. Obtain the estimated diffusion distance according to the estimated moving duration and the gas diffusion velocity; S343. Determine whether the estimated diffusion distance covers the road fork; S344. If so, send the second safety velocity information.

[0042] The second safety velocity information can be "Run forward at full speed".

[0043] The implementation principle of this embodiment is: Construct a location distribution map of the areas where gas is likely to accumulate. According to the location distribution map, obtain the gas concentration values of each monitoring point at the current moment, and sequentially determine whether the gas concentration value of each monitoring point exceeds the alarm concentration threshold. If so, count the number of warning monitoring points and obtain the density of the warning monitoring points. Based on the number of warning monitoring points and the density of the warning monitoring points, obtain the warning level value. According to the classification range to which the warning level value belongs, determine the corresponding warning level. According to the warning level, search for the corresponding countermeasures from the pre-stored measure response table, and send a warning signal matching the countermeasures.

[0044] Based on the above method embodiments, the second embodiment of the present application discloses a coal mine safety monitoring and warning system. Refer to Figure 7 , as an implementation manner of the monitoring and warning system, the monitoring and warning system may include: A location distribution construction module 110, configured to construct a location distribution map of the areas where gas is likely to accumulate. The location distribution map includes the location information of the gas monitoring points and the number information of the gas monitoring points; A gas concentration acquisition module 120, configured to acquire the gas concentration values of each monitoring point at the current moment; A judgment module 130, configured to sequentially judge whether the gas concentration value of each monitoring point exceeds a preset alarm concentration threshold; A statistics module 140, configured to count the number of warning monitoring points; A level determination module 150, configured to determine the warning level according to the number of warning monitoring points; A search module 160, configured to search for corresponding countermeasures from a pre-stored measure response table according to the warning level; A signal sending module 170, configured to send a warning signal matching the countermeasures.

[0045] The level determination module 150 may include: A warning level division unit 151, configured to obtain the classification range of the warning level; A warning density acquisition unit 152, configured to obtain the density of the warning monitoring points; A warning level value acquisition unit 153, configured to obtain a warning level value p according to the warning monitoring point density and the number of warning monitoring points; p = (aq * bn)%, p belongs to [0, 1], q is the assignment of the warning monitoring point density, a is the weight of the preset warning monitoring point density, and b is the weight of the preset number of warning monitoring points; A level determination unit 154, configured to determine the corresponding warning level according to the classification range to which the warning level value p belongs.

[0046] Refer to Figure 8 , as another implementation manner of the monitoring and warning system, the monitoring and warning system may further include: A location acquisition module 180 for acquiring the location information of underground personnel; A judgment module 130 for judging whether the gas monitoring points before and after the moving path are both warning monitoring points; An instruction sending module 190 for sending a route conversion instruction when the gas monitoring points before and after the moving path are both warning monitoring points; for sending a retreat instruction when the gas monitoring point in front of the moving path is a warning monitoring point; and for sending a distancing instruction when the gas monitoring point behind the moving path is a warning monitoring point.

[0047] This monitoring and warning system may further include: A speed acquisition module 210 for acquiring the gas diffusion speed of the warning monitoring point; A distance acquisition module 220 for obtaining the diffusion distance of gas per unit time based on the gas diffusion speed; and for obtaining the moving distance of underground personnel per unit time based on the average speed of the underground personnel's movement; A judgment module 130 for judging whether the diffusion distance is not less than the moving distance; An information sending module 230 for sending the first safe speed information when the diffusion distance is not less than the moving distance; A duration acquisition module 240 for obtaining the estimated moving duration of underground personnel according to the average speed and the distance from the current personnel location to the road fork location; The distance acquisition module 220 is further used for obtaining the estimated diffusion distance according to the estimated moving duration and the gas diffusion speed; A judgment module 130 for judging whether the estimated diffusion distance covers the road fork. If so, the information sending module 230 is used for sending the second safe speed information.

[0048] The third embodiment of this application provides a terminal. As an implementation manner of this terminal, the terminal may include: a memory and a processor; wherein, The memory is used for storing the above-mentioned coal mine safety monitoring and warning program; The processor is used for executing the program stored on the memory to implement the steps of the above-mentioned coal mine safety monitoring and warning method.

[0049] Wherein, the memory can be communicatively connected to the processor through a communication bus, and the communication bus can be an address bus, a data bus, a control bus, etc.

[0050] In addition, the memory may include a random access memory (RAM), and may also include a non-volatile memory (NVM), such as at least one disk memory.

[0051] And the processor can be a general-purpose processor, including a central processing unit (CPU), a network processor (NP), etc.; it can also be a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc.

[0052] The fourth embodiment of the present application provides a computer-readable storage medium storing a computer program that can be loaded and executed by a processor to implement the above-mentioned coal mine safety monitoring and early warning method.

[0053] The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server or a data center integrating one or more available media. Among them, the available medium can be a magnetic medium (for example, a floppy disk, a hard disk, a magnetic tape), an optical medium (for example, a DVD), or a semiconductor medium (for example, a solid state drive), etc.

[0054] The above are all the preferred embodiments of the present application, which do not limit the protection scope of the present application in sequence. Any feature disclosed in this specification (including the abstract and the drawings), unless specifically described, can be replaced by other equivalent or similar-purpose alternative features. That is, unless specifically described, each feature is only an example of a series of equivalent or similar features.

Claims

1. A coal mine safety monitoring and early warning method, characterized in that, Including: Construct a location distribution map of gas-accumulating prone areas, where the location distribution map includes the location information and serial numbers of gas monitoring points; Obtain the gas concentration values of each monitoring point at the current moment; Sequentially determine whether the gas concentration value of each monitoring point exceeds a preset alarm concentration threshold; If so, count the number of early-warning monitoring points; Determine the early-warning level according to the number of early-warning monitoring points; According to the early-warning level, look up corresponding countermeasures from a pre-stored measure response table; Send an early-warning signal matching the countermeasure.

2. The coal mine safety monitoring and early warning method according to claim 1, wherein The step of determining the early-warning level according to the number of early-warning monitoring points includes: Obtain the grading range of the early-warning level, and the early-warning level is divided into four levels; Obtain the density of early-warning monitoring points; According to the density and the number n of early-warning monitoring points, obtain an early-warning level value p; p = (aq * bn)%, p belongs to [0, 1], q is the assigned value of the density of early-warning monitoring points, a is the weight of the preset density of early-warning monitoring points, and b is the weight of the preset number of early-warning monitoring points; Determine the corresponding early-warning level according to the grading range to which the early-warning level value p belongs.

3. A coal mine safety monitoring and early warning method according to claim 1, characterized in that, The monitoring and early-warning method further includes: Obtain the location information of underground personnel; Based on the location information of the personnel, determine the moving path of the underground personnel; Judge whether the gas monitoring points before and after the moving path are both early-warning monitoring points; If so, send a route conversion instruction; If the gas monitoring point in front of the moving path is an early-warning monitoring point, send a retreat instruction; If the gas monitoring point behind the moving path is an early-warning monitoring point, send a distance-keeping-away instruction.

4. A coal mine safety monitoring and early warning method according to claim 3, characterized in that, The monitoring and early-warning method further includes: Obtain the gas diffusion speed of the early-warning monitoring point; Based on the gas diffusion speed, obtain the diffusion distance of the gas per unit time; Based on the average speed of the underground personnel's movement, obtain the movement distance of the underground personnel per unit time; Judge whether the diffusion distance is not less than the movement distance; If so, send the first safety speed information.

5. A coal mine safety monitoring and early warning method according to claim 4, characterized in that, After sending the route conversion instruction, it includes: According to the average speed and the distance from the current personnel location to the road fork location, obtain the estimated movement duration of the underground personnel; According to the estimated movement duration and the gas diffusion speed, obtain the estimated diffusion distance; Judge whether the estimated diffusion distance covers the road fork; If so, send the second safety speed information.

6. A coal mine safety monitoring and early warning method according to claim 4, characterized in that, The step of obtaining the gas diffusion speed includes: Obtain the current ambient temperature, ambient humidity, ambient wind speed, and instantaneous concentration at the time of gas leakage; According to the current ambient temperature, the ambient humidity, the ambient wind speed, the instantaneous concentration, and a pre-constructed speed prediction model, obtain the gas diffusion speed.

7. A coal mine safety monitoring and early warning method according to claim 6, characterized in that, The step of constructing the speed prediction model includes: Arrange multiple gas concentration detection points along the gas diffusion path; Sequentially obtain the duration and distance for the gas to reach multiple detection points; According to the duration and distance corresponding to each detection point, obtain the corresponding instantaneous speed; According to multiple instantaneous speeds, obtain the average diffusion speed; Input multiple historical average diffusion velocities, historical ambient temperatures, historical ambient humidities, historical ambient wind speeds, and historical instantaneous concentrations into the initially established velocity model v = w1p + w2x + w3y + w4z in sequence to obtain w1, w2, w3, and w4; where v is the average diffusion velocity, p is the assignment of the instantaneous gas concentration, x is the assignment of the ambient temperature, y is the assignment of the ambient humidity, z is the assignment of the ambient wind speed, w1 is the weight of the instantaneous gas concentration, w2 is the weight of the ambient temperature, w3 is the weight of the ambient humidity, and w4 is the weight of the ambient wind speed.

8. A coal mine safety monitoring and early warning system, characterized in that, Comprising: A location distribution construction module (110) for constructing a location distribution map of gas accumulation-prone areas, where the location distribution map includes the location information and number information of gas monitoring points; A gas concentration acquisition module (120) for acquiring the gas concentration values of each monitoring point at the current moment; A judgment module (130) for sequentially judging whether the gas concentration value of each monitoring point exceeds a preset alarm concentration threshold; A statistics module (140) for counting the number of early warning monitoring points; A level determination module (150) for determining the early warning level according to the number of early warning monitoring points; A search module (160) for searching for corresponding countermeasures from a pre-stored measure response table according to the early warning level; A signal sending module (170) for sending an early warning signal matching the countermeasure.

9. A terminal, characterized in that, Comprising: A memory storing a coal mine safety monitoring and early warning program; A processor for executing the program stored on the memory to implement the steps of the coal mine safety monitoring and early warning method as described in any one of claims 1-7.

10. A computer-readable storage medium, characterized in that, A computer program stored that can be loaded and executed by the processor to implement the coal mine safety monitoring and early warning method as described in any one of claims 1-7.

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