Coal flow automatic control system based on machine vision

Abstract

The present invention discloses a coal flow automatic control system based on machine vision, which relates to the field of coal flow automatic control, and includes a data acquisition unit, a coal property analysis unit, an equipment environmental demand unit, a level determination unit, and a speed matching unit. The present invention determines and analyzes the apparent, physical, chemical, and spatial states of coal information in the coal flow transportation process to obtain a comprehensive coal performance value, and obtains the equipment stable state value by analyzing the conveyor belt, the operating parameters of the equipment settings, the equipment aging conditions, and the rollers of the equipment information in the coal flow transportation process, and then obtains the environmental demand value by analyzing the radiation conditions and other environmental conditions of the environmental information, and then obtains the speed demand process set and the corresponding conveyor belt speed matching through overall analysis, which can comprehensively consider the factors of coal, equipment, environment, and its own needs, automatically set the transportation speed, give full play to the role of the equipment, and reduce the coal accident rate and use cost.

Description

Technical Field

[0001] The invention relates to the field of coal flow automatic control, and in particular to a coal flow automatic control system based on machine vision. Background Art

[0002] With the continuous progress and development of society, people's demand for coal is increasing. With the continuous expansion of the scale of the coal industry and the continuous improvement of automation, the demand for coal flow control is increasing day by day. Traditional manual monitoring has problems such as low efficiency and large errors, and can no longer meet the needs of modern coal mine transportation and safety. The coal flow automatic control system based on machine vision came into being.

[0003] When running, the traditional coal flow automatic control system based on machine vision cannot take into account the physical, chemical and appearance properties of coal in the coal flow transportation process, nor can it consider the operating status of the equipment in the coal flow transportation process, let alone the environmental impact and production demand factors of the coal flow transportation process. It cannot ensure the safety of coal mine transportation and also increases the cost of the coal flow transportation process.

[0004] When the traditional coal flow automatic control system based on machine vision is in operation, it is unable to grade and match the coal flow transportation process and automatically control the corresponding transportation speed. It is unable to make the coal flow equipment play its maximum role. Instead, the transportation speed setting is often unreasonable, and the equipment failure rate is greatly increased, which also increases the occurrence rate of safety accidents.

[0005] In order to solve the above defects, a technical solution is now provided. Summary of the invention

[0006] In order to solve the technical problems raised by the above background technology, the present invention is proposed. The embodiment of the present invention provides a coal flow automatic control system based on machine vision.

[0007] The purpose of the present invention can be achieved through the following technical solutions: a coal flow automatic control system based on machine vision, including a server, the server is communicatively connected with a data acquisition unit, a coal property analysis unit, an equipment environment unit, a level determination unit and a speed matching unit.

[0008] The coal property analysis unit performs comprehensive coal property determination analysis on the coal information of each coal flow transportation process, obtains the comprehensive coal property value of each coal flow transportation process and the initial value of the coal flow transportation process, and sends it to the level determination unit;

[0009] The equipment environment demand unit performs equipment stability determination analysis on the equipment information of each coal flow conveying process, and obtains the equipment stability value of each coal flow conveying process and the equipment additional value of the coal flow conveying process; performs environmental impact and production demand determination analysis on the environmental information and production information of each coal flow conveying process, and obtains the environmental impact demand value of each coal flow conveying process and the environmental production additional value of the coal flow conveying process, and sends them to the level determination unit;

[0010] The level determination unit assigns values ​​to the coal comprehensive property values, equipment stability values ​​and environmental shadow requirement values ​​of each coal flow transportation process, performs level determination analysis on the speed requirement process, and sends it to the speed matching unit.

[0011] Furthermore, the specific operation steps of the coal comprehensive property value of each coal flow transportation process and the initial value assignment of the coal flow transportation process are as follows:

[0012] Obtain the coal self-property value, coal apparent value, coal internal property value and coalification value in the coal information of each coal flow transportation process. j represents the number of the coal flow transportation process. According to the formula, the coal comprehensive property value mxz of each coal flow transportation process is obtained. j ;

[0013] A first reference threshold tv1 is set for the comprehensive coal property value of each coal flow transportation process, and the comprehensive coal property value of each coal flow transportation process is compared and analyzed with the preset first reference threshold tv1; when the comprehensive coal property value of each coal flow transportation process is less than the preset first reference threshold tv1, the corresponding coal flow transportation process is initially assigned a value of X1 points; when the comprehensive coal property value of each coal flow transportation process is equal to the preset first reference threshold tv1, the corresponding coal flow transportation process is initially assigned a value of X2 points; when the comprehensive coal property value of each coal flow transportation process is greater than the preset first reference threshold tv1, the corresponding coal flow transportation process is initially assigned a value of X3 points.

[0014] Furthermore, the specific operation steps of the coal apparent value, coal internal property value and coalification property value are as follows:

[0015] Obtain the coal roughness, coal abnormality value and coal granularity deviation value in the coal information of each coal flow transportation process, and calibrate them as cc j ,yz j and lz j , substitute the preset model , get the coal apparent value mb of each coal flow transportation process j , where f1, f2 and f3 are the correction factor coefficients of coal roughness, coal anomaly value and coal granularity deviation value respectively, F1 is the set reference value of coal roughness, and e is a natural constant;

[0016] Obtain the coal pile angle value, coal hardness and brittleness value and coal density value in the coal information of each coal flow transportation process, and calculate according to the formula to obtain the coal internal property value mn of each coal flow transportation process j ;

[0017] Obtain the coal water sulfur value, coal ash content and coal fixed carbon content in the coal information of each coal flow transportation process, and calibrate them as sl j , hf j and gc j , and normalize it according to the formula Calculate and obtain the coalification value mh of each coal flow transportation process j , where UO1, UO2 and UO3 are the preset weight factors of coal water sulfur value, coal ash content and coal fixed carbon, respectively. is the preset correction factor.

[0018] Furthermore, the specific operation steps of the additional assignment of the coal flow conveying process equipment are as follows:

[0019] A second reference threshold tv2 is set for the equipment status value of each coal flow conveying process, and the equipment status value of each coal flow conveying process is compared and analyzed with the preset second reference threshold tv2; when the equipment status value of each coal flow conveying process is less than the preset second reference threshold tv2, the corresponding coal flow conveying process is additionally assigned a value of X1 points; when the equipment status value of each coal flow conveying process is equal to the preset second reference threshold tv2, the corresponding coal flow conveying process is additionally assigned a value of X2 points; when the equipment status value of each coal flow conveying process is greater than the preset second reference threshold tv2, the corresponding coal flow conveying process is additionally assigned a value of X3 points.

[0020] Furthermore, the specific operation steps of the equipment status stability value of each coal flow transportation process are as follows:

[0021] Obtain the machine frequency value, equipment aging value, conveyor belt value and drum roller frame value in the equipment information of each coal flow conveying process, and calibrate them as pz j 、sl j 、sd j and kz j , and normalize it for analysis, according to the formula zw j =g1 / sd j +g2×kz j +g3×pz j +g4 / sl j , and obtain the equipment status value zw of each coal flow transportation process j , where g1, g2, g3 and g4 are the preset weight factor coefficients of the conveyor belt condition value, roller frame condition value, machine frequency condition value and equipment aging value respectively.

[0022] Furthermore, the specific operation steps of the conveyor belt shape value and the drum roller frame shape value are as follows:

[0023] Obtain the conveyor belt sag, width, length and route value from the equipment information of each coal flow conveying process, and calculate the conveyor belt value sd by formula j ;

[0024] Obtain the drum diameter roughness value, roller pitch rotation resistance value and frame corrosion stiffness value in the equipment information of each coal flow conveying process, and calculate according to the set formula to obtain the drum roller frame shape value kz of each coal flow conveying process j .

[0025] Furthermore, the specific operation steps of the environmental shadow of each coal flow transportation process needing no value and the additional value of the coal flow transportation process environment production are as follows:

[0026] The environmental impact factor coefficient 1, environmental impact factor coefficient and transportation production demand value are processed according to the graphical construction to obtain the environmental shadow demand value of each coal flow transportation process;

[0027] A third reference threshold tv3 is set for the required value of the ambient shadow of each coal flow transportation process, and the required value of the ambient shadow of each coal flow transportation process is compared and analyzed with the preset third reference threshold tv3; when the required value of the ambient shadow of each coal flow transportation process is less than the preset third reference threshold tv3, the corresponding coal flow transportation process is assigned an additional value of X3 points; when the required value of the ambient shadow of each coal flow transportation process is equal to the preset third reference threshold tv3, the corresponding coal flow transportation process is assigned an additional value of X2 points; when the required value of the ambient shadow of each coal flow transportation process is greater than the preset third reference threshold tv3, the corresponding coal flow transportation process is assigned an additional value of X1 points.

[0028] Furthermore, the specific operation steps of the environmental impact factor coefficient 1, the environmental impact factor coefficient and the conveying production demand value are as follows:

[0029] Obtain the radiation source intensity, the average distance between the radiation source and the conveying process, the electromagnetic shielding material magnetic conductivity value and the shielding material thickness value from the environmental information of each coal flow conveying process, and calculate according to the set formula to obtain the environmental impact factor coefficient of each coal flow conveying process;

[0030] Obtain the temperature value of the environment within a certain period of time from the environmental information of each coal flow transportation process, and analyze and obtain the temperature trend value;

[0031] Obtain the humidity value, temperature trend value, dust concentration and terrain undulation value in the environmental information of each coal flow transportation process, calculate according to the set formula, and obtain the environmental impact factor coefficient 2 of each coal flow transportation process;

[0032] Obtain the unit output of coal flow, conveyor bandwidth and coal seam height from the production information of each coal flow transportation process, divide the unit output of coal flow by the conveyor bandwidth and the coal seam height respectively, and multiply them by their respective weight factors to obtain the transportation production demand value of each coal flow transportation process.

[0033] Furthermore, the specific operation steps of the level determination analysis of the speed requirement process are as follows:

[0034] When the total score of the coal flow transportation process is 3x3 or 2x3+x2, the coal flow transportation process is determined as a first-level speed demand process set; when the total score of the coal flow transportation process is 3x2 or 2x2+x3 or 2x3+x1, the coal flow transportation process is determined as a second-level speed demand process set; when the total score of the coal flow transportation process is 2x1+x2 or 2x2+x1 or 2x1+x3, the coal flow transportation process is determined as a third-level speed demand process set; when the total score of the coal flow transportation process is 3x1, the coal flow transportation process is determined as a fourth-level speed demand process set;

[0035] Furthermore, the server communication connection also includes:

[0036] The data collection unit is used to collect coal information, equipment information, environmental information and production information of each coal flow transportation process, and send it to the coal property analysis unit and the equipment environmental demand unit;

[0037] The speed matching unit processes the speed demand process set and the conveyor belt speed matching setting to obtain the conveyor belt speed setting corresponding to each speed demand process set. The first, second, third and fourth level speed demand process sets correspond to the conveyor belt setting speeds y1, y2, y3 and y4 respectively, where y1>y2>y3>y4.

[0038] Compared with the prior art, the present invention has the following beneficial effects:

[0039] 1. The present invention determines and analyzes the apparent, physical, chemical and spatial states of coal information in the coal flow transportation process to obtain a comprehensive performance value of coal, and obtains the equipment stable state value by analyzing the conveyor belt, equipment setting operating parameters, equipment aging conditions and rollers of the coal flow transportation process equipment information. Then, by analyzing the radiation conditions and other environmental conditions of the environmental information, the environmental shadow requirement value is obtained. The physical, chemical and appearance properties of the coal in the coal flow transportation process, the operating state of the equipment in the coal flow transportation process, and the environmental impact of the coal flow transportation process and the production demand factors can be considered. The safety of coal mine transportation can be guaranteed, and the cost in the coal flow transportation process can be reduced.

[0040] 2. The present invention assigns values ​​to the comprehensive properties of coal, the stability values ​​of equipment and the values ​​of environmental shadows, and obtains a speed demand process set. It analyzes and obtains the first, second, third and fourth level speed demand process sets corresponding to the conveyor belt setting speeds y1, y2, y3 and y4 respectively. It can grade and match the coal flow conveying process with the corresponding conveying speed, enable the coal flow equipment to play its maximum role, make the conveying speed setting more reasonable, greatly reduce the equipment failure rate, and also reduce the occurrence rate of safety accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. The following drawings are not intentionally scaled according to the actual sizes, and the focus is on illustrating the main purpose of the present invention.

[0042] Figure 1 It is a system block diagram of the present invention. DETAILED DESCRIPTION

[0043] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work also fall within the scope of protection of the present invention.

[0044] like Figure 1 As shown, the machine vision-based coal flow automatic control system includes a server, and the server is communicatively connected with a data acquisition unit, a coal property analysis unit, an equipment environment demand unit, a level determination unit and a speed matching unit;

[0045] When the data collection unit collects coal information, equipment information, environmental information and production information of each coal flow transportation process, and sends it to the coal property analysis unit and the equipment environment demand unit;

[0046] When the coal property analysis unit receives the coal information of each coal flow transportation process, and performs comprehensive coal property determination and analysis of the coal flow transportation process based on the information, the specific operation process is as follows:

[0047] Obtain the coal apparent value, coal internal property value, coal chemical property value and coal self-property value in the coal information of each coal flow transportation process, and calibrate them as mb j 、mn j 、mh j and mt j , j represents the number of the coal flow transportation process, and normalizes it for analysis. According to the formula mxz j =ω1×mb j +ω2×mn j +ω3×mhj +ω4×mt j , and obtain the coal comprehensive property value mxz of each coal flow transportation process j , where ω1, ω2, ω3 and ω4 are weight factor coefficients of coal apparent value, coal internal property value, coalification value and coal heterogeneity value respectively, and ω1, ω2, ω3 and ω4 are all natural numbers greater than 0;

[0048] It should be noted that the free travel value of coal refers to the average value of the free travel of coal in the coal flow transportation process. A larger free travel usually means that the coal has better fluidity, which can reduce blockage and improve the corresponding transportation efficiency.

[0049] It should also be pointed out that the solution process of coal apparent value, coal internal property value and coalification value is as follows:

[0050] Obtain the coal roughness, coal abnormality value and coal granularity deviation value in the coal information of each coal flow transportation process, and calibrate them as cc j ,yz j and lz j , substitute the preset model , get the coal apparent value mb of each coal flow transportation process j , where f1, f2 and f3 are correction factor coefficients of coal roughness, coal anomaly value and coal granularity deviation value respectively, and f1, f2 and f3 are all positive integers. The correction factor coefficients are used to correct the deviations of various parameters in the calculation process of the formula, so as to make the calculation of parameter data more accurate. F1 is the set reference value of coal roughness, and e is a natural constant, specifically 2.718;

[0051] It should be noted that the coal anomaly value is the average value of the ratio of the outer surface of coal to the volume of coal in the coal flow transportation process. The larger the value, the more it affects the stability of coal; the coal particle deviation value refers to the weighted calculation of the average particle size value of coal in the coal flow transportation process, the standard deviation of particle size distribution and the absolute value of the difference between the maximum particle size and the standard particle size, multiplied by the corresponding influencing factor;

[0052] Obtain the coal pile angle value, coal hardness and brittleness value and coal density value in the coal information of each coal flow transportation process, and calibrate them as dj j , yc j and mc j , and normalize it according to the formula Calculate and obtain the coal internal property value mn of each coal flow transportation process j ,in is the preset correction factor and And the value is 0.617, as well as They are the preset weight factors for coal pile angle value, coal hardness and brittleness value and coal density and friction value respectively;

[0053] It should be noted that the coal pile angle value refers to the average value of the coal stacking angle in the coal flow transportation process; the coal hardness and brittleness value refers to the weighted calculation of the inverse of the mean value of coal hardness and the mean value of coal brittleness in the coal flow transportation process, and multiplying it by the corresponding proportional factor; the coal density and friction value refers to the weighted calculation of the absolute value of the difference between the mean value of coal density and the mean value of coal conveyor belt friction in the coal flow transportation process and the set standard value;

[0054] Obtain the coal water sulfur value, coal ash content and coal fixed carbon content in the coal information of each coal flow transportation process, and calibrate them as sl j , hf j and gc j , and normalize it according to the formula Calculate and obtain the coalification value mh of each coal flow transportation process j , where UO1, UO2 and UO3 are the preset weight factors of coal water sulfur value, coal ash content and coal fixed carbon, respectively. is the preset correction factor;

[0055] It should be noted that according to the formula Calculate and get the coal-water sulfur value dj j , a1, a2, a3 and a4 are preset weight factors, A1 is the reference value of coal water content, sh j and lh j They are the average water content of coal and the average sulfur content of coal in the coal flow transportation process;

[0056] A first reference threshold tv1 of the coal comprehensive property value of each coal flow transportation process is set, and the coal comprehensive property value of each coal flow transportation process is compared and analyzed with the preset first reference threshold tv1 respectively; when the coal comprehensive property value of each coal flow transportation process is less than the preset first reference threshold tv1, the corresponding coal flow transportation process is initially assigned a value of X1 points; when the coal comprehensive property value of each coal flow transportation process is equal to the preset first reference threshold tv1, the corresponding coal flow transportation process is initially assigned a value of X2 points; when the coal comprehensive property value of each coal flow transportation process is greater than the preset first reference threshold tv1, the corresponding coal flow transportation process is initially assigned a value of X3 points;

[0057] When the equipment environment demand unit receives the equipment information of each coal flow conveying process, and performs equipment stability determination and analysis of the coal flow conveying process based on it; receives the environmental information and production information of each coal flow conveying process, and performs environmental impact and production demand determination and analysis of the coal flow conveying process based on it, the specific operation process is as follows:

[0058] Obtain the belt shape value, drum roller frame shape value, machine frequency shape value and equipment aging value in the equipment information of each coal flow conveying process, and calibrate them as sd j , kzj 、pz j and sl j , and normalize it for analysis, according to the formula zw j =g1 / sd j +g2×kz j +g3×pz j +g4 / sl j , and obtain the equipment status value zw of each coal flow transportation process j , where g1, g2, g3 and g4 are preset weight factor coefficients of the conveyor belt shape value, drum roller frame shape value, machine frequency shape value and equipment aging value, respectively, and g1, g2, g3 and g4 are all natural numbers greater than 0;

[0059] It should be noted that the machine frequency value refers to the product of the motor power and the rated voltage of the inverter, which is multiplied by the preset correction factor; the equipment aging value refers to the weighted calculation of the average value of the deformation of each frame and the increase in the gap between the roller conveyor belt in the coal flow conveying process, and multiplied by the corresponding influencing factor to obtain the quantitative value;

[0060] It should also be pointed out that the process of solving the conveyor belt shape value and the roller frame shape value is as follows:

[0061] Obtain the conveyor belt sag, width, length and route value from the equipment information of each coal flow conveying process, and calibrate them as sx j 、zk j 、zc j and lx j , , get the input band value sd j ,in and These are the preset weight factors for the conveyor belt sag, width, length and route shape. is a preset correction factor, K1 is a preset reference width value, and K2 is a preset reference length value;

[0062] It should be noted that the width value refers to the average value of the ratio of the tension setting to the width in the coal flow conveying process; the length value refers to the average value of the ratio of the tension setting to the length in the coal flow conveying process; the route value is a weighted calculation of the curvature and inclination of the conveyor belt in the coal flow conveying process, and is obtained by multiplying it by the corresponding weight factor;

[0063] Obtain the drum diameter roughness value, roller pitch resistance value and frame corrosion value in the equipment information of each coal flow conveying process, and calibrate them as tc j 、kx j and jf j , and perform formula analysis on it, according to the set formula , get the drum roller frame shape value kz of each coal flow conveying processj , where f1, f2 and f3 are correction factor coefficients of cylinder diameter roughness value, roller pitch resistance value and frame corrosion value, respectively, and f1, f2 and f3 are all natural numbers greater than 0;

[0064] It should be noted that the drum diameter roughness value refers to the sum of the average roller diameter and the average roughness in the coal flow conveying process multiplied by the adjustment factor; the roller pitch rotation resistance value refers to the product of the average roller spacing and the average rotation resistance in the coal flow conveying process; the frame corrosion stiffness value refers to the ratio of the frame stiffness and the corrosion rate in the coal flow conveying process; the corrosion rate refers to the thickness change value before and after corrosion within a certain period of time;

[0065] A second reference threshold tv2 is set for the equipment status value of each coal flow transportation process, and the equipment status value of each coal flow transportation process is compared and analyzed with the preset second reference threshold tv2; when the equipment status value of each coal flow transportation process is less than the preset second reference threshold tv2, the corresponding coal flow transportation process is additionally assigned a value of X1 points; when the equipment status value of each coal flow transportation process is equal to the preset second reference threshold tv2, the corresponding coal flow transportation process is additionally assigned a value of X2 points; when the equipment status value of each coal flow transportation process is greater than the preset second reference threshold tv2, the corresponding coal flow transportation process is additionally assigned a value of X3 points;

[0066] The radiation source intensity, the average distance between the radiation source and the conveying process, the electromagnetic shielding material magnetic conductivity value and the shielding material thickness value in the environmental information of each coal flow conveying process are obtained, and they are calibrated as sg ji 、sj ji 、dc jn and PC jn , i represents the number of the radiation source, i=1, 2, 3...I, the value of I is a positive integer, n represents the number of the electromagnetic shielding material, n=1, 2, 3...N, the value of N is a positive integer, and the formula is analyzed according to the set formula , and obtain the environmental impact factor coefficient of each coal flow transportation process hjy1 j , h1, h2, h3 and h4 are the correction factor coefficients of the radiation source intensity, the average distance between the radiation source and the conveying process, the electromagnetic shielding material magnetic conductivity value and the shielding material thickness value respectively;

[0067] It should be noted that the electromagnetic shielding material magnetic conductivity value refers to the sum of the electromagnetic shielding material's electrical conductivity value and magnetic conductivity value; the shielding material thickness value refers to the ratio of the electromagnetic shielding material thickness to the gap holes;

[0068] Obtain the humidity value, temperature trend value, dust concentration and terrain undulation value in the environmental information of each coal flow transportation process, and calibrate them as fs j 、wq j 、fn jand dq j , and perform formula analysis on it, according to the set formula Calculate and obtain the environmental impact factor coefficient of each coal flow transportation process hjy2 j , where LP1, LP2, LP3 and LP4 are the preset weight factors for rheology value, temperature trend value, dust concentration and terrain undulation value, respectively. is the preset correction factor;

[0069] It should be noted that the rheological value refers to the product of the ambient wind speed value and the humidity value; the terrain relief value refers to the standard deviation of the terrain within a certain distance;

[0070] It should also be pointed out that the solution process of the temperature trend value is as follows:

[0071] Obtain the temperature value of the environment within a certain time in the environmental information of each coal flow transportation process, divide the certain time into several dry sub-times, sort them according to the order of monitoring time, subtract the temperature of the sub-time sorted later from the temperature of the sub-time sorted earlier to obtain the sub-temperature difference value, sum the sub-temperature difference values ​​to obtain the sub-total temperature difference value, obtain the average temperature value of each sub-time, and take the absolute value of the difference between each sub-time and the average temperature value, sum to obtain the sub-average difference value, perform weighted calculation on the sub-total temperature difference value and the sub-average difference, and multiply by the corresponding influencing factor to obtain the temperature trend change value;

[0072] Obtain the unit output of coal flow, conveyor bandwidth and coal seam height from the production information of each coal flow transportation process, divide the unit output of coal flow by the conveyor bandwidth and by the coal seam height respectively, and multiply by their respective corresponding weight factors to obtain the transportation production demand value of each coal flow transportation process;

[0073] The environmental impact factor coefficient 1 and the environmental impact factor coefficient 2 are converted into lengths according to a certain ratio, and a parallelogram is constructed with the lengths of the environmental impact factor coefficient 1 and the environmental impact factor coefficient as the side length and height of the parallelogram; the transportation production demand value is converted into a length according to a certain ratio, and a square is constructed inside the parallelogram with the length of the transportation production demand value as the side length of the square, and the non-overlapping area formed by the square and the parallelogram is identified, and marked as the ring shadow value required for each coal flow transportation process;

[0074] A third reference threshold tv3 is set for the required value of the ambient shadow of each coal flow transportation process, and the required value of the ambient shadow of each coal flow transportation process is compared and analyzed with the preset third reference threshold tv3; when the required value of the ambient shadow of each coal flow transportation process is less than the preset third reference threshold tv3, the corresponding coal flow transportation process is assigned an additional value of X3 points; when the required value of the ambient shadow of each coal flow transportation process is equal to the preset third reference threshold tv3, the corresponding coal flow transportation process is assigned an additional value of X2 points; when the required value of the ambient shadow of each coal flow transportation process is greater than the preset third reference threshold tv3, the corresponding coal flow transportation process is assigned an additional value of X1 points;

[0075] When the level determination unit receives the coal comprehensive property value, equipment stability value and environmental demand value of each coal flow transportation process, and performs level determination analysis of the speed demand process based on this, the specific operation process is as follows:

[0076] The coal comprehensive property value, equipment stability value and environmental shadow value of each coal flow transportation process are added and analyzed, and the total score of each coal flow transportation process is obtained.

[0077] When the total score of the coal flow transportation process is 3x3 or 2x3+x2, the coal flow transportation process is determined as a first-level speed demand process set; when the total score of the coal flow transportation process is 3x2 or 2x2+x3 or 2x3+x1 or x1+x2+x3, the coal flow transportation process is determined as a second-level speed demand process set; when the total score of the coal flow transportation process is 2x1+x2 or 2x2+x1 or 2x1+x3, the coal flow transportation process is determined as a third-level speed demand process set; when the total score of the coal flow transportation process is 3x1, the coal flow transportation process is determined as a fourth-level speed demand process set;

[0078] When the speed matching unit receives the speed requirement process set, it performs matching setting processing between the speed requirement process set and the conveyor belt speed accordingly. The specific operation process is as follows:

[0079] If the coal flow transportation process is a first-level speed demand process set, the corresponding conveyor belt is set to high-speed transportation, and the speed is y1, specifically 4-5m / s. If the coal flow transportation process is a second-level speed demand process set, the corresponding conveyor belt is set to medium-high speed transportation, and the speed is y2, specifically 3-3.9m / s. If the coal flow transportation process is a third-level speed demand process set, the corresponding conveyor belt is set to medium-speed transportation, and the speed is y3, specifically 1.5-2.9m / s. If the coal flow transportation process is a fourth-level speed demand process set, the corresponding conveyor belt is set to low-speed transportation, and the speed is y4, specifically 0.5-1.4m / s, where y1>y2>y3>y4;

[0080] The present invention determines and analyzes the apparent, physical, chemical and spatial states of coal information in the coal flow conveying process to obtain a comprehensive coal performance value, and obtains the equipment stable state value by analyzing the conveyor belt, equipment setting operating parameters, equipment aging conditions and rollers of the coal flow conveying process equipment information. Then, by analyzing the radiation conditions and other environmental conditions of the environmental information, the environmental shadow requirement value is obtained. The present invention can consider the physical, chemical and appearance properties of the coal in the coal flow conveying process, the operating state of the equipment in the coal flow conveying process, and the environmental impact of the coal flow conveying process and the production demand factors, thereby ensuring the safety of coal mine transportation and reducing the cost in the coal flow conveying process.

[0081] The present invention assigns values ​​to the comprehensive property values ​​of coal, the stability values ​​of equipment and the value of the environmental shadow, and obtains a speed demand process set. The first, second, third and fourth level speed demand process sets are analyzed to correspond to the conveyor belt setting speeds y1, y2, y3 and y4 respectively. The coal flow conveying process can be graded and matched with the corresponding conveying speeds, the coal flow equipment can play its maximum role, the conveying speed setting is more reasonable, the equipment failure rate is greatly reduced, and the occurrence rate of safety accidents is also reduced.

[0082] The above is an explanation of the present invention and should not be considered as a limitation thereof. Although several exemplary embodiments of the present invention have been described, it will be readily appreciated by those skilled in the art that many modifications may be made to the exemplary embodiments without departing from the novel teachings and advantages of the present invention. Therefore, all such modifications are intended to be included within the scope of the present invention as defined in the claims. It should be understood that the above is an explanation of the present invention and should not be considered as being limited to the specific embodiments disclosed, and modifications to the disclosed embodiments and other embodiments are intended to be included within the scope of the appended claims. The present invention is defined by the claims and their equivalents.

Claims

1. A coal flow automatic control system based on machine vision, comprising a server, characterized in that: The server communication connections are: The coal property analysis unit performs comprehensive coal property determination and analysis on the coal information of each coal flow transportation process, obtains the comprehensive coal property value of each coal flow transportation process and the initial value of the coal flow transportation process, and sends it to the level determination unit; The calculation steps of the coal comprehensive property value are as follows: obtain the coal apparent value, coal internal property value, coal chemical property value and coal self-property value in the coal information of each coal flow transportation process, and calibrate them as mb j 、mn j 、mh j and mt j , j represents the number of the coal flow transportation process, and normalizes it for analysis. According to the formula mxz j =ω1×mb j +ω2×mn j +ω3×mh j +ω4×mt j , and obtain the coal comprehensive property value mxz of each coal flow transportation process j , where ω1, ω2, ω3 and ω4 are weight factor coefficients; The equipment environment demand unit conducts equipment stability determination and analysis on the equipment information of each coal flow conveying process, and obtains the equipment stability value and additional value of the equipment of each coal flow conveying process; conducts environmental impact and production demand determination and analysis on the environmental information and production information of each coal flow conveying process, and obtains the environmental impact demand value and additional value of the environmental production of each coal flow conveying process, and sends them to the level determination unit; The calculation steps of the equipment status value are as follows: obtain the machine frequency status value, equipment aging value, conveyor belt status value and drum roller frame status value in the equipment information of each coal flow conveying process, and calibrate them as pz j 、sl j 、sd j and kz j , and normalize it for analysis, according to the formula zw j =g1 / sd j +g2×kz j +g3×pz j +g4 / sl j , and obtain the equipment status value zw of each coal flow transportation process j , where g1, g2, g3 and g4 are all preset weight factor coefficients; The level determination unit assigns the coal comprehensive property value, equipment stability value and environmental shadow requirement value of each coal flow transportation process, performs level determination analysis of the speed demand process, and sends it to the speed matching unit; The calculation steps of the required environmental shadow value are as follows: environmental impact factor coefficient 1, environmental impact factor coefficient 2 and transportation production demand value are processed according to a graph to obtain the required environmental shadow value of each coal flow transportation process.

2. The machine vision-based coal flow automatic control system according to claim 1 is characterized in that: The specific operation steps of the coal comprehensive property value and the initial value assignment of each coal flow transportation process are as follows: A first reference threshold tv1 is set for the comprehensive coal property value of each coal flow transportation process, and the comprehensive coal property value of each coal flow transportation process is compared and analyzed with the preset first reference threshold tv1; when the comprehensive coal property value of each coal flow transportation process is less than the preset first reference threshold tv1, the corresponding coal flow transportation process is initially assigned a value of X1 points; when the comprehensive coal property value of each coal flow transportation process is equal to the preset first reference threshold tv1, the corresponding coal flow transportation process is initially assigned a value of X2 points; when the comprehensive coal property value of each coal flow transportation process is greater than the preset first reference threshold tv1, the corresponding coal flow transportation process is initially assigned a value of X3 points.

3. The machine vision-based coal flow automatic control system according to claim 1 is characterized in that: The specific operation steps of the coal apparent value, coal internal property value and coal chemical property value are as follows: Obtain the coal roughness, coal abnormality value and coal granularity deviation value in the coal information of each coal flow transportation process, and calibrate them as cc j ,yz j and lz j , substitute the preset model , get the coal apparent value mb of each coal flow transportation process j , where f1, f2 and f3 are the correction factor coefficients of coal roughness, coal anomaly value and coal granularity deviation value respectively, F1 is the set reference value of coal roughness, and e is a natural constant; Obtain the coal pile angle value, coal hardness and brittleness value and coal density value in the coal information of each coal flow transportation process, and calculate according to the formula to obtain the coal internal property value mn of each coal flow transportation process j ; Obtain the coal water sulfur value, coal ash content and coal fixed carbon content in the coal information of each coal flow transportation process, and calibrate them as sl j , hf j and gc j , and normalize it according to the formula Calculate and obtain the coalification value mh of each coal flow transportation process j , where UO1, UO2 and UO3 are the preset weight factors of coal water sulfur value, coal ash content and coal fixed carbon, respectively. is the preset correction factor.

4. The machine vision-based coal flow automatic control system according to claim 1 is characterized in that: The specific operation steps of the additional assignment of the coal flow conveying process equipment are as follows: A second reference threshold tv2 is set for the equipment status value of each coal flow conveying process, and the equipment status value of each coal flow conveying process is compared and analyzed with the preset second reference threshold tv2; when the equipment status value of each coal flow conveying process is less than the preset second reference threshold tv2, the corresponding coal flow conveying process is additionally assigned a value of X1 points; when the equipment status value of each coal flow conveying process is equal to the preset second reference threshold tv2, the corresponding coal flow conveying process is additionally assigned a value of X2 points; when the equipment status value of each coal flow conveying process is greater than the preset second reference threshold tv2, the corresponding coal flow conveying process is additionally assigned a value of X3 points.

5. The machine vision-based coal flow automatic control system according to claim 1 is characterized in that: The specific operation steps of the conveyor belt shape value and the drum roller frame shape value are as follows: Obtain the conveyor belt sag, width, length and route value from the equipment information of each coal flow conveying process, and calculate the conveyor belt value sd through the formula j ; Obtain the drum diameter roughness value, roller pitch rotation resistance value and frame corrosion stiffness value in the equipment information of each coal flow conveying process, and calculate the drum roller frame shape value kz of each coal flow conveying process according to the set formula j .

6. The machine vision-based coal flow automatic control system according to claim 1, characterized in that: The specific operation steps of the environmental shadow of each coal flow transportation process needing no value and the additional value of the coal flow transportation process environment production are as follows: A third reference threshold tv3 is set for the required value of the ambient shadow of each coal flow transportation process, and the required value of the ambient shadow of each coal flow transportation process is compared and analyzed with the preset third reference threshold tv3; when the required value of the ambient shadow of each coal flow transportation process is less than the preset third reference threshold tv3, the corresponding coal flow transportation process is assigned an additional value of X3 points; when the required value of the ambient shadow of each coal flow transportation process is equal to the preset third reference threshold tv3, the corresponding coal flow transportation process is assigned an additional value of X2 points; when the required value of the ambient shadow of each coal flow transportation process is greater than the preset third reference threshold tv3, the corresponding coal flow transportation process is assigned an additional value of X1 points.

7. The machine vision-based coal flow automatic control system according to claim 1, characterized in that: The specific operation steps of the environmental impact factor coefficient 1, environmental impact factor coefficient 2 and conveying production demand value are as follows: The radiation source intensity, the average distance between the radiation source and the conveying process, the electromagnetic shielding material magnetic conductivity value and the shielding material thickness value in the environmental information of each coal flow conveying process are obtained, and they are calibrated as sg ji 、sj ji 、dc jn and PC jn , i represents the number of the radiation source, i=1, 2, 3...I, the value of I is a positive integer, n represents the number of the electromagnetic shielding material, n=1, 2, 3...N, the value of N is a positive integer, according to the set formula , and obtain the environmental impact factor coefficient of each coal flow transportation process - hjy1 j , h1, h2, h3 and h4 are the correction factor coefficients of the radiation source intensity, the average distance between the radiation source and the conveying process, the electromagnetic shielding material magnetic conductivity value and the shielding material thickness value respectively; Obtain the temperature value of the environment within a certain period of time from the environmental information of each coal flow transportation process, and analyze and obtain the temperature trend value; Obtain the humidity value, temperature trend value, dust concentration and terrain undulation value in the environmental information of each coal flow transportation process, and calibrate them as fs j 、wq j 、fn j and dq j , and perform formula analysis on it, according to the set formula Calculate and obtain the environmental impact factor coefficient of each coal flow transportation process hjy2 j , where LP1, LP2, LP3 and LP4 are the preset weight factors for rheology value, temperature trend value, dust concentration and terrain undulation value, respectively. is the preset correction factor; Obtain the unit output of coal flow, conveyor bandwidth and coal seam height from the production information of each coal flow transportation process, divide the unit output of coal flow by the conveyor bandwidth and the coal seam height respectively, and multiply them by their respective weight factors to obtain the transportation production demand value of each coal flow transportation process.

8. The machine vision-based coal flow automatic control system according to claim 1, characterized in that: The specific operation steps of the level determination analysis of the speed requirement process are as follows: When the total score of the coal flow transportation process is 3x3 or 2x3+x2, the coal flow transportation process is determined as a first-level speed demand process set; when the total score of the coal flow transportation process is 3x2 or 2x2+x3 or 2x3+x1, the coal flow transportation process is determined as a second-level speed demand process set; when the total score of the coal flow transportation process is 2x1+x2 or 2x2+x1 or 2x1+x3, the coal flow transportation process is determined as a third-level speed demand process set; when the total score of the coal flow transportation process is 3x1, the coal flow transportation process is determined as a fourth-level speed demand process set.

9. The machine vision-based coal flow automatic control system according to claim 1, characterized in that: Server communication connections also include: The data collection unit is used to collect coal information, equipment information, environmental information and production information of each coal flow transportation process, and send it to the coal property analysis unit and the equipment environmental demand unit; The speed matching unit processes the speed demand process set and the conveyor belt speed matching setting to obtain the conveyor belt speed setting corresponding to each speed demand process set. The first, second, third and fourth level speed demand process sets correspond to the conveyor belt setting speeds y1, y2, y3 and y4 respectively, where y1>y2>y3>y4.

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