Coal mining machine adaptive control method and device, storage medium and electronic equipment

Abstract

Embodiments of the present application disclose a coal mining machine adaptive control method and device, a storage medium and an electronic device. The method comprises: determining an excess gas concentration when detecting that a first gas concentration collected by a gas sensor exceeds a first gas concentration threshold; determining a first reducible gas concentration of a ventilator according to a first dust concentration collected by a dust sensor; determining a second reducible gas concentration of the coal mining machine according to the first reducible gas concentration and a target coal mining efficiency; and increasing a wind speed of the ventilator and reducing a coal mining speed of the coal mining machine according to the first reducible gas concentration, the second gas concentration and the excess gas concentration, so that the first gas concentration is lower than the first gas concentration threshold. By using the embodiments of the present application, unnecessary stopping and starting of the coal mining machine can be reduced, and the coal mining efficiency is improved.

Description

Technical Field

[0001] This application relates to the field of coal mining machines, specifically to an adaptive control method, device, storage medium, and electronic equipment for coal mining machines. Background Technology

[0002] As coal mining progresses into deeper coal seams, the incidence of disasters such as gas explosions is high, highly unpredictable, and results in significant casualties. This places high demands on the reliability, unmanned operation, and adaptability of coal mining machines. As one of the main pieces of equipment in fully mechanized mining systems, coal mining machines are characterized by high cutting efficiency and strong coal breaking capacity, playing a decisive role in improving the productivity and efficiency of the working face.

[0003] In existing automatic control systems for coal mining machines, workers rely on gas monitoring devices to determine if there are any safety hazards. If the gas concentration exceeds the standard, the power supply to the coal mining machine is immediately cut off. Power is restored once the working face conditions meet the relevant regulations, and the coal mining machine continues operation. This coal mining method often results in unnecessary stops and starts, leading to low mining efficiency. Summary of the Invention

[0004] This application provides an adaptive control method, device, storage medium, and electronic equipment for a coal mining machine, which can reduce unnecessary stops and starts of the coal mining machine, thereby improving coal mining efficiency.

[0005] The first aspect of this application provides an adaptive control method for a coal mining machine, comprising:

[0006] When the gas concentration detected by the gas sensor exceeds the first gas concentration threshold, the current excess gas concentration is determined.

[0007] The first reducible gas concentration of the ventilator is determined based on the first dust concentration collected by the dust sensor.

[0008] The second reducible gas concentration of the coal mining machine is determined based on the first reducible gas concentration and the target coal mining efficiency;

[0009] If the first reducible gas concentration is greater than or equal to the excess gas concentration, the wind speed of the ventilator is increased based on the first reducible gas concentration.

[0010] If the first reducible gas concentration is less than the excess gas concentration, and the sum of the first reducible gas concentration and the second reducible gas concentration is greater than or equal to the excess gas concentration, then the wind speed of the ventilator is increased and the coal mining speed of the coal mining machine is decreased based on the first reducible gas concentration and the second reducible gas concentration.

[0011] If the sum of the first reducible gas concentration and the second reducible gas concentration is less than the excess gas concentration, then the wind speed of the ventilator is increased and the coal mining speed of the coal mining machine is decreased based on the first reducible gas concentration.

[0012] By adopting the above technical solution, when the gas concentration exceeds the safety threshold, the ventilation speed of the ventilation fan is increased and the coal mining speed of the coal mining machine is reduced according to the dust concentration in the coal passage and the coal mining efficiency. Under the premise of considering the coal mining efficiency, the gas concentration is reduced to the safety threshold, which can prevent unnecessary stopping and starting of the coal mining machine, thereby improving the coal mining efficiency of the coal mining machine.

[0013] Optionally, determining the first reducible gas concentration of the ventilator based on the first dust concentration collected by the dust sensor includes:

[0014] The difference between the first dust concentration threshold and the first dust concentration is obtained to obtain the difference dust concentration;

[0015] Based on the differential dust concentration and the relationship between dust concentration and ventilation speed, the accelerable ventilation speed of the ventilator is determined.

[0016] The first descent gas concentration of the ventilator is determined based on the descent velocity.

[0017] By adopting the above technical solution, the ventilator's maximum ventilation speed can be determined based on the dust concentration, thereby reducing the gas concentration in the coal duct and effectively preventing excessive dust concentration caused by excessive ventilation speed, thus avoiding damage to the equipment.

[0018] Optionally, determining the second reducible gas concentration of the coal mining machine based on the first reducible gas concentration and the target coal mining efficiency includes:

[0019] The first differential gas concentration is obtained by subtracting the excess gas concentration from the first reducible gas concentration.

[0020] Based on the target coal mining efficiency and the first differential gas concentration, the second reducible gas concentration of the coal mining machine is determined.

[0021] By adopting the above technical solution, since increasing the ventilation speed does not affect the coal mining efficiency, the ventilation speed is increased first to reduce the gas concentration in the coal passage. Then, based on the coal mining efficiency and the first differential gas concentration, the coal mining speed of the coal mining machine is reduced, thereby ensuring the coal mining efficiency of the coal mining machine.

[0022] Optionally, increasing the wind speed of the ventilator and reducing the coal mining speed of the coal mining machine based on the first reducible gas concentration includes:

[0023] Based on the first reduction in gas concentration, the air velocity of the ventilator is increased;

[0024] The first differential gas concentration is obtained by subtracting the excess gas concentration from the first reducible gas concentration.

[0025] Based on the first differential gas concentration, the coal mining speed of the coal mining machine is reduced.

[0026] By adopting the above technical solution, when the sum of the first reducible gas concentration and the second reducible gas concentration is less than the excess gas concentration, the gas concentration is reduced by increasing the ventilation speed first. Subsequently, the coal mining speed of the coal mining machine is reduced according to the first difference gas concentration, thereby reducing the gas concentration to below the first gas concentration threshold.

[0027] Optionally, the coal mining speed includes drum rotation speed and traction speed, and reducing the coal mining speed of the coal mining machine according to the first differential gas concentration includes:

[0028] Based on the first differential gas concentration, the drum speed is preferentially reduced to the lowest threshold, and then the traction speed is reduced.

[0029] By adopting the above technical solution, prioritizing the reduction of drum speed is beneficial to the mining of lump coal and results in higher economic benefits. By prioritizing the reduction of drum speed, the mining rate of lump coal can be increased.

[0030] Optionally, the method further includes:

[0031] If the gas concentration detected by the gas sensor is higher than the second gas concentration threshold, an alarm is sent to the management personnel, where the second concentration threshold is greater than the first concentration threshold.

[0032] By adopting the above technical solution, when the gas concentration exceeds the second gas concentration threshold, an alarm is sent to the management personnel, who then analyze the specific situation on site to avoid potential safety hazards.

[0033] A second aspect of this application provides an adaptive control device for a coal mining machine, the device comprising:

[0034] The excess gas concentration determination module is used to determine the current excess gas concentration when the first gas concentration collected by the gas sensor exceeds the first gas concentration threshold.

[0035] The first reducible gas concentration determination module is used to determine the first reducible gas concentration of the ventilator based on the first dust concentration collected by the dust sensor.

[0036] The second reducible gas concentration determination module is used to determine the second reducible gas concentration of the coal mining machine based on the first reducible gas concentration and the target coal mining efficiency.

[0037] The first gas concentration adjustment module is used to increase the wind speed of the ventilator based on the first reducible gas concentration if the first reducible gas concentration is greater than or equal to the excess gas concentration.

[0038] The second gas concentration adjustment module is used to increase the wind speed of the ventilator and decrease the coal mining speed of the coal mining machine based on the first reducible gas concentration and the second reducible gas concentration if the first reducible gas concentration is less than the excess gas concentration and the sum of the first reducible gas concentration and the second reducible gas concentration is greater than or equal to the excess gas concentration.

[0039] The third gas concentration adjustment module is used to increase the wind speed of the ventilator and decrease the coal mining speed of the coal mining machine based on the first reducible gas concentration if the sum of the first reducible gas concentration and the second reducible gas concentration is less than the excess gas concentration.

[0040] A third aspect of this application provides a computer-readable storage medium storing a plurality of instructions adapted for loading by a processor and executing the method steps described above.

[0041] A fourth aspect of this application provides an electronic device, comprising: a processor and a memory; wherein the memory stores a computer program adapted to be loaded by the processor and to execute the above-described method steps.

[0042] In summary, this application includes at least one of the following beneficial effects:

[0043] By adopting the above technical solution, when the gas concentration exceeds the safety threshold, the ventilation speed of the ventilation fan is increased and the coal mining speed of the coal mining machine is reduced according to the dust concentration in the coal passage and the coal mining efficiency. Under the premise of considering the coal mining efficiency, the gas concentration is reduced to the safety threshold, which can prevent unnecessary stopping and starting of the coal mining machine, thereby improving the coal mining efficiency of the coal mining machine. Attached Figure Description

[0044] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0045] Figure 1This is a flowchart illustrating an adaptive control method for a coal mining machine provided in an embodiment of this application.

[0046] Figure 2 This is a schematic diagram of a module of an adaptive control device for a coal mining machine provided in an embodiment of this application;

[0047] Figure 3 This is a schematic diagram of the structure of an electronic device provided in an embodiment of this application.

[0048] Explanation of reference numerals in the attached drawings: 1. Coal mining machine adaptive control device; 11. Excess gas concentration determination module; 12. First reduceable gas concentration determination module; 13. Second reduceable gas concentration determination module; 14. First gas concentration adjustment module; 15. Second gas concentration adjustment module; 16. Third gas concentration adjustment module; 1000. Electronic equipment; 1001. Processor; 1002. Communication bus; 1003. User interface; 1004. Network interface; 1005. Memory. Detailed Implementation

[0049] To enable those skilled in the art to better understand the technical solutions in this specification, the technical solutions in the embodiments of this specification will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0050] In the description of the embodiments in this application, words such as "illustrative," "for example," or "for example" are used to indicate examples, illustrations, or explanations. Any embodiment or design described as "illustrative," "for example," or "for example" in the embodiments of this application should not be construed as being more preferred or advantageous than other embodiments or designs. Rather, the use of words such as "illustrative," "for example," or "for example" is intended to present the relevant concepts in a specific manner.

[0051] In the description of the embodiments of this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, B existing alone, or A and B existing simultaneously. Furthermore, unless otherwise stated, the term "multiple" means two or more. For example, multiple systems refer to two or more systems, and multiple screen terminals refer to two or more screen terminals. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the indicated technical features. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. The terms "comprising," "including," "having," and their variations all mean "including but not limited to," unless otherwise specifically emphasized.

[0052] In the early stages of coal formation, cellulose and organic matter in plants decompose under environmental conditions to produce gases such as methane. These gases are stored within the coal seam and are called methane. Methane is gradually released as the coal seam is mined. When it accumulates to a certain concentration underground, it can cause safety accidents such as explosions. In the automatic control system of traditional coal mining machines, workers rely on methane monitoring devices to determine whether the coal mining machine is moving too fast. If the methane concentration exceeds the standard, the power supply to the coal mining machine is immediately cut off. Once the methane concentration drops below the standard concentration, the power supply to the coal mining machine is restored, and the coal mining machine continues to operate. In this coal mining method, the coal mining machine often experiences unnecessary stops and starts, which causes impacts and damage to the motor windings and gears, and also affects the coal mining efficiency.

[0053] To balance environmental safety, mining efficiency, and the service life of coal mining machines and related equipment, this application provides an adaptive control method for coal mining machines. Please refer to [link / reference needed]. Figure 1 This method can be implemented using a computer program, a microcontroller, or run on an adaptive control device for coal mining machines based on the von Neumann architecture. The computer program can be integrated into the application or run as a standalone tool application.

[0054] Step 101: When the gas concentration collected by the gas sensor exceeds the first gas concentration threshold, determine the current excess gas concentration.

[0055] Since the coal mining machine is in a moving state during the coal mining process, uneven distribution of gas concentration may occur. Therefore, in this embodiment, gas sensors are installed at multiple locations on the coal mining machine, such as the left traveling part, the right traveling part, and the central part. Each gas sensor is connected to the controller of the coal mining machine via wired or wireless connection to transmit the gas concentration information collected during the coal mining process in real time, and the real-time collected gas concentration information is defined as the first gas concentration.

[0056] Furthermore, according to the "Coal Mine Safety Regulations," an alarm is triggered when the methane concentration at the fully mechanized coal mining face reaches 1%, and work must be stopped and personnel evacuated when it reaches 1.5%. Therefore, in this embodiment, the first methane concentration threshold can be set at approximately 1%. The first methane concentration, collected in real time by a methane sensor, is compared with the first methane concentration threshold, and the operation of the coal mining machine and other related equipment is controlled based on the comparison result.

[0057] For example, when the controller of the coal mining machine determines that the received first gas concentration exceeds the first gas concentration threshold, the difference between the first gas concentration and the first gas concentration threshold is calculated to obtain the excess gas concentration when the coal mining machine is currently operating.

[0058] Step 102: Determine the first reducible gas concentration of the ventilator based on the first dust concentration collected by the dust sensor.

[0059] In this embodiment of the application, a ventilation fan can be installed in the coal mining environment around the coal mining machine. The fan is connected to the coal mining machine by wire or wireless means. The controller in the coal mining machine can control the ventilation speed. The higher the ventilation speed, the faster the gas in the mine tunnel dissipates. Thus, the gas concentration in the mine tunnel can be reduced by increasing the ventilation speed of the ventilation fan.

[0060] However, in actual coal mining, due to varying geological environments and significant differences in mining methods and processes, a large amount of dust is typically generated during mining operations. This dust adheres to the mine walls and surface, while the remainder is suspended in the mine tunnels. If the ventilation speed is too high, the dust adhering to the walls and surface will float, resulting in a large amount of dust suspended in the mine tunnels, affecting the health of workers and the lifespan of equipment. Therefore, there is an upper limit to reducing the gas concentration in the mine tunnels by increasing the ventilation speed.

[0061] For example, multiple parts of the coal mining machine are equipped with dust sensors. Each dust sensor is connected to the coal mining machine via wired or wireless means to transmit dust concentration information collected during the coal mining process in real time. The real-time dust concentration information is defined as the first dust concentration. Based on the upper limit of the dust concentration, the increase value of the ventilation speed can be determined. Then, based on the increase value of the ventilation speed, the corresponding decrease value of the gas concentration can be determined. The decrease value of the gas concentration is defined as the first reducible gas concentration.

[0062] Based on the above embodiments, as an optional embodiment, the step of determining the first reducible gas concentration of the ventilator according to the first dust concentration collected by the dust sensor may further include the following steps:

[0063] Step 201: Subtract the first dust concentration threshold from the first dust concentration to obtain the difference dust concentration.

[0064] In this embodiment of the application, the first dust concentration threshold refers to the maximum dust concentration in the mine tunnel. It can be understood that if the dust concentration in the mine tunnel exceeds the first dust concentration threshold, it may affect the service life of the workers and equipment.

[0065] For example, the controller collects dust concentration in real time through a dust sensor, and calculates the difference between the first dust concentration threshold and the first dust concentration to obtain the dust concentration that can be increased within a certain limit. This concentration is defined as the differential dust concentration.

[0066] Step 202: Determine the ventilator's maximum ventilation velocity based on the differential dust concentration and the relationship between dust concentration and ventilation velocity.

[0067] For example, the upliftable ventilation velocity of the ventilator can be calculated based on the differential dust concentration using the relationship between dust concentration and ventilation velocity. The relationship between dust concentration and ventilation velocity is expressed as V1 = NV2S, where V1 represents the dust mass flow rate; N represents the dust concentration; V2 represents the ventilation velocity; and S represents the mine tunnel area.

[0068] Step 203: Determine the first descent gas concentration of the ventilator based on the descent velocity.

[0069] By establishing a flow field simulation model within the mine tunnel and conducting simulations using Fluent software, it can be observed that the methane concentration within the mine tunnel varies significantly under different fan velocities. When the fan velocities are low, the methane concentration within the mine tunnel is high, and the width of the methane exceeding the limit area is also large. As the fan velocities increase, the methane concentration within the mine tunnel gradually decreases, and the width of the methane exceeding the limit area within the mine tunnel also becomes smaller and smaller.

[0070] Furthermore, based on the accelerable ventilation velocity obtained above, the reduction in gas concentration in the mine tunnel after increasing the ventilation speed of the ventilator to the accelerable ventilation velocity can be estimated, and this reduction can be defined as the first accelerable gas concentration.

[0071] Step 103: Determine the second reducible gas concentration of the coal mining machine based on the first reducible gas concentration and the target coal mining efficiency.

[0072] In this embodiment of the application, the target coal mining efficiency can be understood as the target coal mining volume of the coal mining machine within a certain period of time. In the existing automatic control system of the coal mining machine, the gas monitoring device is usually used to determine whether the coal mining speed of the coal mining machine is too fast. If the gas concentration exceeds the standard, the power supply of the coal mining machine is immediately cut off. The power supply is restored after the working face conditions meet the relevant regulations, and the coal mining machine continues to operate. Alternatively, the coal mining efficiency of the coal mining machine is reduced to reduce the gas concentration. However, in both of the above methods, the target coal mining efficiency of the coal mining machine will be low.

[0073] For example, when the first reducible gas concentration is less than the excess gas concentration, it indicates that increasing the ventilation speed within a certain limit is insufficient to reduce the excess gas concentration. It is necessary to further reduce the coal mining speed of the coal mining machine to reduce the gas outburst in the mine tunnel. Therefore, under the premise of ensuring the coal mining efficiency of the coal mining machine, the reduction value of the coal mining speed of the coal mining machine can be determined according to the target coal mining efficiency. Then, the corresponding reduction value of gas concentration can be determined according to the reduction value of the coal mining speed, and the gas concentration reduction value at this time is defined as the second reducible gas concentration.

[0074] Based on the above embodiments, as an optional embodiment, the step of determining the second reducible gas concentration of the coal mining machine according to the first reducible gas concentration and the target coal mining efficiency may further include the following steps:

[0075] Step 301: Subtract the excess gas concentration from the first reducible gas concentration to obtain the first differential gas concentration.

[0076] For example, when it is necessary to further reduce the gas concentration in the mine tunnel by reducing the coal mining speed of the coal mining machine, it means that the excess gas concentration is greater than the first reducible gas concentration. The controller calculates the difference between the excess gas concentration and the first reducible gas concentration and defines the difference as the first differential gas concentration.

[0077] Step 302: Based on the target coal mining efficiency and the first differential gas concentration, determine the second reducible gas concentration of the coal mining machine.

[0078] The loading components of the coal mining machine are equipped with gravity sensors, which can monitor the quality of the mined coal in real time. Based on the quality of the mined coal obtained by the coal mining machine within a certain period of time, the mining efficiency at that time can be reflected.

[0079] Furthermore, since the coal formation structure on different mine walls is different, the coal mining efficiency and the generated gas concentration of the coal mining machine are different when operating on different mine tunnels. Therefore, in a feasible implementation, the relationship between coal mining speed and coal mining quantity, as well as the relationship between coal mining speed and gas concentration, can be determined by analyzing the coal structure of the mine wall before coal mining. When the coal mining machine is working, the relationship between coal mining speed and coal mining quantity, as well as the relationship between coal mining speed and gas concentration, are calibrated by the coal mining speed, coal mining quantity, and gas concentration.

[0080] For example, the controller can determine the current coal mining efficiency of the coal mining machine based on the amount of coal mined within a certain time. If the current coal mining efficiency is greater than the target coal mining efficiency, the controller can determine the reducible speed of the coal mining machine based on the relationship between coal mining speed and coal mining amount, and then determine the second reducible gas concentration of the coal mining machine based on the relationship between coal mining speed and gas concentration.

[0081] Step 104: If the first descent gas concentration is greater than or equal to the excess gas concentration, then increase the fan speed based on the first descent gas concentration.

[0082] For example, if the controller determines that the first reducible gas concentration is greater than or equal to the excess gas concentration, it means that by increasing the ventilation speed of the ventilator, the current gas concentration can be reduced to below the first gas concentration. Therefore, the controller can directly calculate the increaseable ventilation speed of the ventilator based on the first reducible gas concentration and send a control signal to the ventilator to increase the ventilation speed of the ventilator accordingly.

[0083] Step 105: If the first reducible gas concentration is less than the excess gas concentration, and the sum of the first reducible gas concentration and the second reducible gas concentration is greater than or equal to the excess gas concentration, then increase the wind speed of the ventilation fan and decrease the coal mining speed of the coal mining machine based on the first reducible gas concentration and the second reducible gas concentration.

[0084] For example, if the controller determines that the first reducible gas concentration is less than the excess gas concentration, and the sum of the first reducible gas concentration and the second reducible gas concentration is greater than or equal to the excess gas concentration, it means that by increasing the ventilation speed of the ventilator and reducing the coal mining speed of the coal mining machine according to the target coal mining efficiency, the current gas concentration can be reduced to below the first gas concentration. Therefore, the controller increases the ventilation speed of the ventilator according to the first reducible gas concentration and reduces the coal mining speed of the coal mining machine according to the second reducible gas concentration.

[0085] Step 106: If the sum of the first reducible gas concentration and the second reducible gas concentration is less than the excess gas concentration, then increase the wind speed of the ventilation fan and decrease the coal mining speed of the coal mining machine based on the first reducible gas concentration.

[0086] For example, if the controller determines that the sum of the first reducible gas concentration and the second reducible gas concentration is less than the excess gas concentration, it means that increasing the ventilation speed of the ventilator and reducing the coal mining speed of the coal mining machine according to the target coal mining efficiency are insufficient to reduce the current gas concentration below the first gas concentration. In order to ensure the safety of the coal mining environment, the target coal mining efficiency is no longer considered. After increasing the ventilator speed according to the first reducible gas concentration, the current gas concentration is reduced to below the first gas concentration by directly reducing the coal mining speed of the coal mining machine.

[0087] Based on the above embodiments, as an optional embodiment, the step of increasing the wind speed of the ventilation fan based on the first method of reducing gas concentration and reducing the coal mining speed of the coal mining machine may further include the following steps:

[0088] Step 401: Based on the first reducible gas concentration, increase the fan speed.

[0089] Step 402: Subtract the excess gas concentration from the first reducible gas concentration to obtain the first differential gas concentration.

[0090] Step 403: Based on the first differential gas concentration, reduce the coal mining speed of the coal mining machine.

[0091] For example, when the controller determines that the first and second reduceable gas concentrations are less than the excess gas concentration, it first increases the ventilation speed of the ventilator based on the first reduceable gas concentration; then it subtracts the excess gas concentration from the first reduceable gas concentration to obtain the first differential gas concentration. The first differential gas concentration needs to be eliminated by reducing the coal mining speed of the coal mining machine. The controller directly determines the second reduceable gas concentration of the coal mining machine based on the relationship between the coal mining speed and the gas concentration.

[0092] In one alternative implementation, based on the first differential gas concentration, the drum speed is preferentially reduced to a minimum threshold, and then the traction speed is reduced.

[0093] In this embodiment of the application, the coal mining speed may include the drum speed and the traction speed related to the movement of the coal mining machine. In actual operation, the lump coal ratio is an important indicator for measuring coal quality. The higher the lump coal ratio, the higher the price of coal. The lump coal ratio is mainly related to the drum speed and traction speed of the coal mining machine. When the traction speed is fixed, the lump coal ratio is inversely proportional to the drum speed. When the traction speed is low, the drum speed has little impact on the lump coal ratio. Therefore, the coal mining machine should operate under the condition of high traction speed and low drum speed.

[0094] For example, when reducing the coal mining speed of the coal mining machine based on the first differential gas concentration, the drum speed can be reduced to the minimum speed threshold first, and then the traction speed of the coal mining machine can be reduced. This can increase the output of lump coal while reducing the gas concentration.

[0095] In one feasible implementation, if the gas concentration detected by the gas sensor is higher than the second gas concentration threshold, an alarm is sent to the management personnel.

[0096] In this embodiment of the application, the second gas concentration threshold refers to a threshold that approaches the safe value of gas concentration, and the second gas concentration threshold is greater than the first gas concentration threshold.

[0097] For example, if the gas concentration detected by the gas sensor is higher than the second gas concentration threshold, it may be due to a problem with the control method described in the above embodiment, or it may be due to a malfunction of the detection device. In this case, the controller sends an alarm to the mobile terminal of the management personnel, prompting the management personnel to perform manual on-site maintenance.

[0098] The following are system embodiments of this application, which can be used to execute the method embodiments of this application. For details not disclosed in the system embodiments of this application, please refer to the method embodiments of this application.

[0099] Please refer to Figure 2 This application provides an adaptive control device for a coal mining machine. The adaptive control device 1 may include: an excess gas concentration determination module 11, a first reducible gas concentration determination module 12, a second reducible gas concentration determination module 13, a first gas concentration adjustment module 14, a second gas concentration adjustment module 15, and a third gas concentration adjustment module 16, wherein:

[0100] The excess gas concentration determination module 11 is used to determine the current excess gas concentration when the first gas concentration collected by the gas sensor exceeds the first gas concentration threshold.

[0101] The first reducible gas concentration determination module 12 is used to determine the first reducible gas concentration of the ventilator based on the first dust concentration collected by the dust sensor.

[0102] The second reducible gas concentration determination module 13 is used to determine the second reducible gas concentration of the coal mining machine based on the first reducible gas concentration and the target coal mining efficiency.

[0103] The first gas concentration adjustment module 14 is used to increase the wind speed of the ventilator based on the first reducible gas concentration if the first reducible gas concentration is greater than or equal to the excess gas concentration.

[0104] The second gas concentration adjustment module 15 is used to increase the wind speed of the ventilator and the coal mining speed of the coal mining machine based on the first reducible gas concentration and the second reducible gas concentration if the first reducible gas concentration is less than the excess gas concentration and the sum of the first reducible gas concentration and the second reducible gas concentration is greater than or equal to the excess gas concentration.

[0105] The third gas concentration adjustment module 16 is used to increase the wind speed of the ventilator and the coal mining speed of the coal mining machine based on the first reducible gas concentration if the sum of the first reducible gas concentration and the second reducible gas concentration is less than the excess gas concentration.

[0106] Based on the above embodiments, as an optional embodiment, the first reducible gas concentration determination module 12 further includes: a differential dust concentration calculation unit, a reducible ventilation velocity determination unit, and a first reducible gas concentration determination unit, wherein:

[0107] The differential dust concentration calculation unit is used to calculate the difference between the first dust concentration threshold and the first dust concentration to obtain the differential dust concentration;

[0108] The accelerable ventilation velocity determination unit is used to determine the accelerable ventilation velocity of the ventilator based on the differential dust concentration and the relationship between dust concentration and ventilation velocity.

[0109] The first reducible gas concentration determination unit is used to determine the first reducible gas concentration of the ventilator based on the reducible ventilation speed.

[0110] Based on the above embodiments, as an optional embodiment, the second reducible gas concentration determination module 13 further includes: a first differential gas concentration calculation unit and a second reducible gas concentration calculation unit, wherein:

[0111] The first differential gas concentration calculation unit is used to calculate the difference between the excess gas concentration and the first reducible gas concentration to obtain the first differential gas concentration.

[0112] The second reducible gas concentration calculation unit is used to determine the second reducible gas concentration of the coal mining machine based on the target coal mining efficiency and the first differential gas concentration.

[0113] Based on the above embodiments, as an optional embodiment, the third gas concentration regulation module 16 further includes: a ventilation fan speed increase unit, a first differential gas concentration calculation unit, and a coal mining machine speed reduction unit, wherein:

[0114] A ventilation fan speed increasing unit is used to increase the speed of the ventilation fan according to the first reducible gas concentration.

[0115] The first differential gas concentration calculation unit is used to calculate the difference between the excess gas concentration and the first reducible gas concentration to obtain the first differential gas concentration.

[0116] The coal mining machine speed reduction unit is used to reduce the coal mining speed of the coal mining machine based on the first differential gas concentration.

[0117] Based on the above embodiments, as an optional embodiment, the coal mining machine speed reduction unit further includes: a coal mining machine speed reduction subunit, wherein:

[0118] The coal mining machine speed reduction subunit is used to prioritize reducing the drum speed to a minimum threshold based on the first differential gas concentration, and then reduce the traction speed.

[0119] Based on the above embodiments, as an optional embodiment, the coal mining machine adaptive control device 1 further includes: a gas concentration alarm module, wherein:

[0120] The gas concentration alarm module is used to send an alarm to the management personnel if the first gas concentration collected by the gas sensor is higher than the second gas concentration threshold, wherein the second concentration threshold is greater than the first concentration threshold.

[0121] This application also provides a computer storage medium that can store multiple instructions, which are adapted to be loaded and executed by a processor as described above. Figure 1 The adaptive control method for the coal mining machine described in the illustrated embodiment can be found in the following documentation for its specific execution process. Figure 1 The specific details of the illustrated embodiments will not be elaborated here.

[0122] Please see Figure 3 This is a schematic diagram of the structure of an electronic device provided in an embodiment of this application. Figure 3 As shown, the electronic device 1000 may include: at least one processor 1001, at least one network interface 1004, a user interface 1003, a memory 1005, and at least one communication bus 1002.

[0123] The communication bus 1002 is used to realize the connection and communication between these components.

[0124] The user interface 1003 may include a display screen and a camera. Optionally, the user interface 1003 may also include a standard wired interface and a wireless interface.

[0125] The network interface 1004 may optionally include a standard wired interface or a wireless interface (such as a Wi-Fi interface).

[0126] The processor 1001 may include one or more processing cores. The processor 1001 connects to various parts within the electronic device 1000 using various interfaces and lines. It executes various functions and processes data by running or executing instructions, programs, code sets, or instruction sets stored in the memory 1005, and by calling data stored in the memory 1005. Optionally, the processor 1001 may be implemented using at least one hardware form selected from Digital Signal Processing (DSP), Field-Programmable Gate Array (FPGA), and Programmable Logic Array (PLA). The processor 1001 may integrate one or more of the following: a Central Processing Unit (CPU), a Graphics Processing Unit (GPU), and a modem. The CPU primarily handles the operating system, user interface, and applications; the GPU is responsible for rendering and drawing the content to be displayed on the screen; and the modem handles wireless communication. It is understood that the modem may also be implemented as a separate chip, without being integrated into the processor 1001.

[0127] The memory 1005 may include random access memory (RAM) or read-only memory. Optionally, the memory 1005 may include a non-transitory computer-readable storage medium. The memory 1005 can be used to store instructions, programs, code, code sets, or instruction sets. The memory 1005 may include a program storage area and a data storage area, wherein the program storage area may store instructions for implementing an operating system, instructions for at least one function (such as touch function, sound playback function, image playback function, etc.), instructions for implementing the above-described method embodiments, etc.; the data storage area may store data involved in the above-described method embodiments, etc. Optionally, the memory 1005 may also be at least one storage device located remotely from the aforementioned processor 1001. Figure 3 As shown, the memory 1005, which serves as a computer storage medium, may include an operating system, a network communication module, a user interface module, and an application program for an adaptive control method for a coal mining machine.

[0128] It should be noted that the above embodiments of the apparatus are only illustrated by the division of the above functional modules. In practical applications, the above functions can be assigned to different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete all or part of the functions described above. In addition, the apparatus and method embodiments provided in the above embodiments belong to the same concept, and the specific implementation process can be found in the method embodiments, which will not be repeated here.

[0129] exist Figure 3 In the electronic device 1000 shown, the user interface 1003 is mainly used to provide an input interface for the user and to obtain the user input data; while the processor 1001 can be used to call an application program of a coal mining machine adaptive control method stored in the memory 1005. When executed by one or more processors, the electronic device performs one or more of the methods described in the above embodiments.

[0130] An electronic device readable storage medium stores instructions that, when executed by one or more processors, cause the electronic device to perform one or more of the methods described in the above embodiments.

[0131] Those skilled in the art will clearly understand that the technical solutions of this application can be implemented using software and / or hardware. In this specification, "unit" and "module" refer to software and / or hardware capable of independently performing or cooperating with other components to perform specific functions. Hardware may include, for example, a Field-Programmable Gate Array (FPGA), an Integrated Circuit (IC), etc.

[0132] It should be noted that, for the sake of simplicity, the foregoing method embodiments are all described as a series of actions. However, those skilled in the art should understand that this application is not limited to the described order of actions, as some steps may be performed in other orders or simultaneously according to this application. Furthermore, those skilled in the art should also understand that the embodiments described in the specification are preferred embodiments, and the actions and modules involved are not necessarily essential to this application.

[0133] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0134] In the several embodiments provided in this application, it should be understood that the disclosed apparatus can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some service interface; the indirect coupling or communication connection between devices or units may be electrical or other forms.

[0135] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0136] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0137] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage device (CMD). Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a memory and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned memory includes various media capable of storing program code, such as USB flash drives, read-only memory (ROM), random access memory (RAM), portable hard drives, magnetic disks, or optical disks.

[0138] Those skilled in the art will understand that all or part of the steps in the various methods of the above embodiments can be implemented by a program instructing related hardware. The program can be stored in a computer-readable storage medium, which may include: a flash drive, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, etc.

[0139] The foregoing description is merely an exemplary embodiment of this disclosure and should not be construed as limiting the scope of this disclosure. Any equivalent changes and modifications made in accordance with the teachings of this disclosure shall still fall within the scope of this disclosure. Those skilled in the art will readily conceive of other embodiments of this disclosure upon considering the specification and the disclosure of practical truths. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not described in this disclosure.

Claims

1. An adaptive control method for a coal mining machine, characterized in that, include: When the gas concentration detected by the gas sensor exceeds the first gas concentration threshold, the current excess gas concentration is determined. The first reducible gas concentration of the ventilator is determined based on the first dust concentration collected by the dust sensor. The second reducible gas concentration of the coal mining machine is determined based on the first reducible gas concentration and the target coal mining efficiency; If the first reducible gas concentration is greater than or equal to the excess gas concentration, the wind speed of the ventilator is increased based on the first reducible gas concentration. If the first reducible gas concentration is less than the excess gas concentration, and the sum of the first reducible gas concentration and the second reducible gas concentration is greater than or equal to the excess gas concentration, then the wind speed of the ventilator is increased and the coal mining speed of the coal mining machine is decreased based on the first reducible gas concentration and the second reducible gas concentration. If the sum of the first reducible gas concentration and the second reducible gas concentration is less than the excess gas concentration, then the wind speed of the ventilator is increased and the coal mining speed of the coal mining machine is decreased based on the first reducible gas concentration. The step of determining the first reducible gas concentration of the ventilator based on the first dust concentration collected by the dust sensor includes: The difference between the first dust concentration threshold and the first dust concentration is obtained to obtain the difference dust concentration; Based on the differential dust concentration and the relationship between dust concentration and ventilation speed, the accelerable ventilation speed of the ventilator is determined. The first reducible gas concentration of the ventilator is determined based on the reducible ventilation velocity; The relationship between dust concentration and ventilation velocity is as follows: V1=NV2S; In the formula, V1 represents the dust mass flow rate; N represents the dust concentration; V2 represents the ventilation velocity; and S represents the coal passage area. The step of determining the second reducible gas concentration of the coal mining machine based on the first reducible gas concentration and the target coal mining efficiency includes: The first differential gas concentration is obtained by subtracting the excess gas concentration from the first reducible gas concentration. Based on the target coal mining efficiency and the first differential gas concentration, the second reducible gas concentration of the coal mining machine is determined.

2. The adaptive control method for a coal mining machine according to claim 1, characterized in that, The method of increasing the wind speed of the ventilator and reducing the coal mining speed of the coal mining machine based on the first reducible gas concentration includes: The fan speed is increased according to the first reduction in gas concentration; The first differential gas concentration is obtained by subtracting the excess gas concentration from the first reducible gas concentration. Based on the first differential gas concentration, the coal mining speed of the coal mining machine is reduced.

3. The adaptive control method for a coal mining machine according to claim 2, characterized in that, The coal mining speed includes drum rotation speed and traction speed. Reducing the coal mining speed of the coal mining machine based on the first differential gas concentration includes: Based on the first differential gas concentration, the drum speed is preferentially reduced to the lowest threshold, and then the traction speed is reduced.

4. The adaptive control method for a coal mining machine according to claim 1, characterized in that, The method further includes: If the gas concentration detected by the gas sensor is higher than the second gas concentration threshold, an alarm is sent to the management personnel, where the second gas concentration threshold is greater than the first gas concentration threshold.

5. An adaptive control device for a coal mining machine, characterized in that, include: The excess gas concentration determination module (11) is used to determine the current excess gas concentration when the first gas concentration collected by the gas sensor exceeds the first gas concentration threshold. The first reducible gas concentration determination module (12) is used to determine the first reducible gas concentration of the ventilator based on the first dust concentration collected by the dust sensor. The step of determining the first reducible gas concentration of the ventilator based on the first dust concentration collected by the dust sensor includes: The difference between the first dust concentration threshold and the first dust concentration is obtained to obtain the difference dust concentration; Based on the differential dust concentration and the relationship between dust concentration and ventilation speed, the accelerable ventilation speed of the ventilator is determined. The first reducible gas concentration of the ventilator is determined based on the reducible ventilation velocity; The relationship between dust concentration and ventilation velocity is as follows: V1=NV2S; In the formula, V1 represents the dust mass flow rate; N represents the dust concentration; V2 represents the ventilation velocity; and S represents the coal passage area. The second reducible gas concentration determination module (13) is used to determine the second reducible gas concentration of the coal mining machine based on the first reducible gas concentration and the target coal mining efficiency. The step of determining the second reducible gas concentration of the coal mining machine based on the first reducible gas concentration and the target coal mining efficiency includes: The first differential gas concentration is obtained by subtracting the excess gas concentration from the first reducible gas concentration. Based on the target coal mining efficiency and the first differential gas concentration, the second reducible gas concentration of the coal mining machine is determined; The first gas concentration adjustment module (14) is used to increase the wind speed of the ventilator based on the first reducible gas concentration if the first reducible gas concentration is greater than or equal to the excess gas concentration. The second gas concentration adjustment module (15) is used to increase the wind speed of the ventilator and decrease the coal mining speed of the coal mining machine based on the first reduceable gas concentration and the second reduceable gas concentration if the first reduceable gas concentration is less than the excess gas concentration and the sum of the first reduceable gas concentration and the second reduceable gas concentration is greater than or equal to the excess gas concentration. The third gas concentration adjustment module (16) is used to increase the wind speed of the ventilator and decrease the coal mining speed of the coal mining machine based on the first reducible gas concentration if the sum of the first reducible gas concentration and the second reducible gas concentration is less than the excess gas concentration.

6. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a plurality of instructions adapted to be loaded by a processor and executed as described in any one of claims 1 to 4.

7. An electronic device, characterized in that, The device includes a processor, a memory, and a transceiver. The memory is used to store instructions, the transceiver is used to communicate with other devices, and the processor is used to execute the instructions stored in the memory to cause the electronic device to perform the method as described in any one of claims 1 to 4.

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