Sampling device for detecting sampling quality of mining area

Abstract

The invention relates to the technical field of coal mine sampling devices, in particular to a sampling device for mining area sampling quality detection. According to the embodiment of the invention, the crushing device is arranged at the joint of the sampling cylinder and the sample outlet cylinder, then the crushing effect of the coal mine blocks is realized according to the crushing device, and the initial image, the target image and the weight data of all the coal mine blocks on the filter screen are obtained by arranging the second camera, the third camera and the weight monitoring equipment; the accumulation degree of the coal mine blocks on the filter screen is determined through analysis, the operation power of the servo motor is controlled according to the accumulation degree, and the servo motor controls the crushing part to rotate based on the operation power to execute crushing operation. Therefore, the operation power of the servo motor can be adjusted, the crushing strength and efficiency of the crushing part are adjusted, the consistency of the crushing effect is ensured, the consistency of mined coal mine blocks is improved, and the sampling efficiency is enhanced.

Description

Technical Field

[0001] This application relates to the technical field of coal mine sampling devices, and particularly to a sampling device for sampling quality detection in mining areas. Background Art

[0002] A coal mine is an area where humans extract coal resources in coal-rich mining areas. Coal quality testing can ensure the composition of relevant components of the mined coal and determine which industrial uses it is suitable for, so as to achieve the best use effect of the coal mine. In the prior art CN220437811U, a sampling device for coal quality testing in coal mines is proposed. By inserting the sampling equipment deep into the coal seam, the coal mine is sampled using a rotating sampling knife, and the sampled coal mine is transported to the sample outlet cylinder, where it is received by the sample storage module, thus completing the sampling of the coal mine.

[0003] However, there are significant differences in the sizes of the coal mine block samples received by the sample storage module in the prior art. After the sampled coal mine blocks are stored, there may be a large number of gaps between the coal mine blocks. Due to the large gaps between the coal mine blocks in the sample storage module, the amount of the collected coal mine samples stored in the sample storage cylinder is small, resulting in the weight not meeting the preset standard requirements. However, at this time, the sample storage cylinder can no longer store coal mines. As a result, the consistency of the sizes, qualities, etc. of the coal mines collected in different sample storage cylinders is poor, which seriously affects the sampling efficiency. Summary of the Invention

[0004] In order to solve the technical problem in the related art that due to the significant differences in the sizes of the sampled coal mine blocks, the consistency of the sizes, qualities, etc. of the coal mines collected in different sample storage cylinders is poor, which seriously affects the sampling efficiency, this application provides a sampling device for sampling quality detection in mining areas, and the specific technical solution adopted is as follows: This application proposes a sampling device for sampling quality detection in mining areas, including a sampling module, a moving module, and a sample storage module. The sampling module includes a sampling cylinder and a sample outlet cylinder connected to each other. A crushing device is configured at the connection between the sampling cylinder and the sample outlet cylinder. The crushing device includes a feed inlet connected to the sampling cylinder, a crushing member, a second camera, a third camera, a filter screen, a weight monitoring device, a discharge outlet connected to the sample outlet cylinder, and a servo motor. Among them, the filter screen is located below the crushing member. The coal mine blocks enter through the feed inlet, are crushed by the crushing member and fall onto the filter screen, and then are filtered by the filter screen and output through the discharge outlet. The second camera is located above the crushing member and is used to capture the initial image of the uncrushed coal mine blocks. The third camera is located below the filter screen and is used to capture the target image of the coal mine blocks below the filter screen. Image analysis is respectively performed on the initial image and the target image to determine the flow change data of the coal mine blocks above the crushing member and below the filter screen. The weight monitoring device is arranged below the filter screen and is used to obtain the weight data of all coal blocks on the filter screen; According to the weight data and the flow change data, determine the stacking degree of the coal blocks on the filter screen, and control the operating power of the servo motor according to the stacking degree. The servo motor controls the rotation of the crushing member based on the operating power to perform the crushing operation.

[0005] Further, the method for obtaining the flow change data includes: Perform edge detection on the initial image and the target image respectively, and determine different coal block regions according to the edge detection results; Determine the volume feature data of the corresponding image according to the distribution of the coal block regions in each image; Normalize the difference between the volume feature data of the initial image and the target image as the flow change data.

[0006] Further, the determining the volume feature data of the corresponding image according to the distribution of the coal block regions in each image includes: Determine the uniformity of the coal block regions in the corresponding image according to the area distribution of all the coal block regions in the same image; Determine the volume feature data of the coal blocks in the corresponding image according to the total area, uniformity and the number of all the coal block regions in the same image. Among them, the total area and uniformity of the coal block regions are positively correlated with the volume feature data, and the number of the coal block regions is negatively correlated with the volume feature data.

[0007] Further, the determining the uniformity of the coal block regions according to the area distribution of all the coal block regions includes: Determine the dispersion degree of the areas of all the coal block regions; Normalize the opposite number of the dispersion degree as the uniformity of the coal block regions.

[0008] Further, the determining the volume feature data of the coal blocks in the corresponding image according to the total area, uniformity and the number of all the coal block regions in the same image includes: Take the normalized value of the product of the total area and uniformity of all the coal block regions as the area influence index; Take the normalized value of the reciprocal of the number of all the coal block regions as the number influence index; Calculate the product value of the area influence index and the number influence index to obtain the volume feature data.

[0009] Further, according to the weight data and the flow change data, determining the accumulation degree of the coal blocks on the filter screen includes: Calculating the normalized value of the product of the weight data and the flow change data as the accumulation degree of the coal blocks on the filter screen.

[0010] Further, controlling the operating power of the servo motor according to the accumulation degree includes: Determining a preset maximum power during the operation of the servo motor, where the preset maximum power is not higher than the rated power of the servo motor; Determining the operating power of the servo motor according to the accumulation degree and the preset maximum power.

[0011] Further, determining the operating power of the servo motor according to the accumulation degree and the preset maximum power includes: Calculating the product of the accumulation degree and the preset maximum power to obtain the operating power of the servo motor.

[0012] Further, it further includes a light source for illuminating the shooting range of the second camera when the second camera performs shooting.

[0013] Further, it further includes a recovery device. When the accumulation degree is greater than a preset accumulation threshold and the difference in the accumulation degree between the current moment and the previous moment is greater than a preset accumulation difference, the recovery device is started to recover the coal blocks on the filter screen into the sampling cylinder.

[0014] The present application has the following beneficial effects: In the embodiment of the present application, a crushing device is configured at the connection between the sampling cylinder and the sample outlet cylinder. Then, according to the crushing device, the crushing effect of the coal blocks is realized, avoiding the situation that due to the relatively large coal particles and large gaps between the coals, the coal in the sample storage cylinder can no longer be effectively stored, but the weight does not meet the requirements, which seriously affects the sampling quality of the sampling device. During the crushing process, in order to ensure the crushing effect, it is necessary to detect and analyze the situation of the coal blocks in the crushing device. By setting the second camera, the third camera and the weight monitoring device, the initial image, the target image and the weight data of all the coal blocks on the filter screen are obtained. By analyzing, the accumulation degree of the coal blocks on the filter screen is determined. According to the accumulation degree, the operating power of the servo motor is controlled. The servo motor controls the rotation of the crushing part based on the operating power to perform the crushing operation. Thus, the operating power of the servo motor can be adjusted, and then the crushing strength and efficiency of the crushing part can be adjusted, ensuring the stability of the crushing effect, improving the consistency effect of the sampled coal blocks, and enhancing the sampling efficiency. Description of the Drawings

[0015] To more clearly illustrate the technical solutions and advantages in the embodiments of the present application or the prior art, the following will briefly introduce the accompanying drawings required for the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0016] Figure 1 The first structural diagram of the coal mine detection vehicle provided by an embodiment of the present application; Figure 2 The second structural diagram of the coal mine detection vehicle provided by an embodiment of the present application; Figure 3 The structural diagram of a crushing device provided by an embodiment of the present application; Figure 4 The flowchart of the method for obtaining flow change data provided by an embodiment of the present application; The reference numerals in the figure are: 100 Sampling module; 110 Sampling cylinder; 130 Sampling motor; 140 Sample outlet cylinder; 200 Moving module; 210 First camera; 300 Sample storage module; 310 Sample receiving platform; 320 Circulating conveying device; 321 Chain track; 323 Driven wheel; 330 Sample storage cylinder; 350 Gravity sensor; 410 Sampling cylinder fixing part; 420 Lifting motor; 500 Crushing device; 501 Feeding port; 502 Crushing part; 503 Second camera; 504 Third camera; 505 Filter screen; 506 Weight monitoring device; 507 Discharge port; 508 Servo motor; 509 Inclined plate; 510 Device housing. Detailed implementation manners

[0017] In order to further elaborate on the technical means and effects adopted by the present application to achieve the predetermined invention purpose, the following will, in conjunction with the accompanying drawings and preferred embodiments, detail the specific implementation manners, structures, features, and effects of a sampling device for sampling quality detection in a mining area proposed according to the present application. In the following description, different "one embodiment" or "another embodiment" do not necessarily refer to the same embodiment. In addition, the specific features, structures, or characteristics in one or more embodiments can be combined in any suitable form.

[0018] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present application belongs.

[0019] The following will specifically describe the specific solution of a sampling device for sampling quality detection in a mining area provided by the present application in conjunction with the accompanying drawings.

[0020] The sampling device for coal quality detection in coal mines in the embodiments of the present application can be specifically embodied in the form of a mobile vehicle. Combining Figure 1 and Figure 2 for specific analysis, Figure 1 is the first structural diagram of the coal mine detection vehicle provided by an embodiment of the present application, Figure 2 is the second structural diagram of the coal mine detection vehicle provided by an embodiment of the present application. Among them, the sampling module 100 includes a sampling cylinder 110, a sampling motor 130, and a sample output cylinder 140; the moving module 200 is mainly crawler-type movement and includes a first camera 210; the sample storage module 300 includes a sample receiving platform 310, a circulating conveying device 320, a chain track 321, a driven wheel 323, a sample storage cylinder 330, a gravity sensor 350, a sampling cylinder fixing member 410, and a lifting motor 420.

[0021] Among them, the moving module 200 is a crawler-type vehicle bottom. The function of the moving module 200 is to enable the sampling device for coal quality detection in coal mines to move within the coal sampling area of the coal mine. The sampling module 100 and the sample storage module 300 are arranged on the moving module 200. The sampling module 100 is used to sample the coal in the coal sampling area of the coal mine. The function of the sample storage module 300 is to send the coal block samples collected by the sampling module 100 to the sample storage cylinder 330 of the sample storage module 300 for storage. The circulating conveying device 320 is used to periodically control the rotation of the sample storage cylinder 330 to store the coal block samples in different sample storage cylinders 330. In the related art, due to the inconsistent sizes of the coal block samples, a relatively large coal block sample may suddenly be received in the sample storage cylinder 330, resulting in a large difference in the quality and quality of the coal block samples collected in different sample storage cylinders 330, thereby affecting the collection efficiency.

[0022] In this embodiment, the sampling module 100 can be connected to the moving module 200 through a lifting device (not marked in the figure). During the sampling process, the lifting device drives the screw rod to rotate through the screw rod lifting motor, so that the sampling module 100 performs a lifting activity. When entering the sampling position, the lifting device drives the sampling module 100 to descend to the ground. The sampling motor 130 rotates to collect coal block samples. The collected coal blocks move upward in the sampling cylinder 110. When the collected coal blocks reach the position of the sample output cylinder 140, they reach the sample storage module 300 through the sample output cylinder 140, thus realizing the sampling and sample storage of coal blocks. And in the embodiments of the present application, a crushing device 500 is configured at the connection between the sampling cylinder 110 and the sample output cylinder 140 to realize the crushing process of coal blocks.

[0023] Please refer to Figure 3, which shows a structural diagram of a crushing device provided by an embodiment of the present application. The crushing device 500 includes a feed inlet 501 connected to the sampling cylinder 110, a crushing member 502, a second camera 503, a third camera 504, a filter screen 505, a weight monitoring device 506, a discharge outlet 507 connected to the sample output cylinder 140, a servo motor 508. At the bottom of the crushing device, there is an inclined plate 509 facilitating the rolling of coal blocks, and a device housing 510 wrapping the entire crushing device; wherein, the filter screen 505 is located below the crushing member 502. The coal blocks enter through the feed inlet 501, are crushed by the crushing member 502 and fall onto the filter screen 505. Then, they are filtered by the filter screen 505 and output through the discharge outlet 507.

[0024] It should be noted that in the related art, the collected coal blocks are directly stored in the sample storage cylinder 330 of the sample storage module 300, and the size of the coal blocks is also an important standard affecting the coal quality detection.

[0025] On the one hand, when the coal blocks are too large, it may cause a too large coal block to be stored in the sample storage cylinder 330, and then other coal blocks cannot be stuffed in, resulting in a large difference in the coal content in different sample storage cylinders 330, affecting the subsequent mineral detection.

[0026] On the other hand, when the coal blocks are too large, the subsequent mineral detection still requires knocking and screening.

[0027] Therefore, it is necessary to control the coal blocks of appropriate size. In the embodiment of the present application, the screening process is realized through further crushing and filtering. However, during the crushing process, the coal blocks to be crushed are prone to accumulate, resulting in a poor crushing effect. Therefore, it is necessary to adaptively adjust the crushing effect during the crushing process to adapt to the accumulation of coal blocks.

[0028] In the embodiment of the present application, an adaptive crushing effect is realized by configuring multi-dimensional data acquisition and data analysis devices. Among them, the second camera 503 is located above the crushing member 502 and is used to capture the initial image of the uncrushed coal blocks. The third camera 504 is located below the filter screen 505 and is used to capture the target image of the coal blocks below the filter screen 505. Image analysis is performed on the initial image and the target image respectively to determine the flow change data of the coal blocks above the crushing member 502 and below the filter screen 505. The weight monitoring device 506 is configured below the filter screen 505 and is used to obtain the weight data of all the coal blocks on the filter screen 505. According to the weight data and the flow change data, the accumulation degree of the coal blocks on the filter screen 505 is determined, and the operating power of the servo motor 508 is controlled according to the accumulation degree. The servo motor 508 controls the rotation of the crushing member 502 based on the operating power to perform the crushing operation.

[0029] Further, in some embodiments of the present application, refer to Figure 4 ,Figure 4 The flowchart of the method for obtaining flow change data provided by an embodiment of the present application includes: S401: Perform edge detection on the initial image and the target image respectively, and determine different coal mine block areas according to the edge detection results.

[0030] Among them, the edge detection can be specifically, for example, canny edge detection, or sobel edge detection method, etc., which are all commonly used technologies in the field of image detection. Its essence is to obtain the areas belonging to coal mines in the image and realize the distribution analysis of coal mine blocks.

[0031] Since the overall color of the coal mine is relatively dark during the actual detection process, accordingly, in the embodiment of the present application, a corresponding light source can also be configured, which can be located below the second camera, or can also be located on the side, or can also be a multi-point light group, which illuminates the shooting range of the second camera when the second camera takes pictures.

[0032] It should be noted that the same edge detection process is performed on both the initial image and the target image to identify the coal mine block areas in each image. In the actual scenario, different coal mine blocks will be stacked, but the stacking state has a low impact on the overall analysis of coal mine blocks. Therefore, in the embodiment of the present application, the analysis is directly performed based on the planar image to determine the coal mine block areas.

[0033] S402: Determine the volume feature data of the corresponding image according to the distribution of the coal mine block areas in each image.

[0034] Among them, the volume feature data is a numerical representation of the volume characteristics of the coal mine blocks shown in the image during the processes of flowing and crushing. In the embodiment of the present application, the volume feature data of the uncrushed coal mine blocks and the coal mine blocks filtered by the filter screen can be determined according to the characteristic distribution of the coal mine block areas in the image.

[0035] Further, in some embodiments of the present application, determining the volume feature data of the corresponding image according to the distribution of the coal mine block areas in each image includes: determining the uniformity degree of the coal mine block areas in the corresponding image according to the area distribution of all the coal mine block areas in the same image; determining the volume feature data of the coal mine blocks in the corresponding image according to the total area, uniformity degree and the number of all the coal mine block areas in the same image, where the total area and uniformity degree of the coal mine block areas are positively correlated with the volume feature data, and the number of the coal mine block areas is negatively correlated with the volume feature data.

[0036] Among them, the uniformity degree is an index of the uniformity of the size distribution of the coal mine blocks. The larger the value of the uniformity degree, the more average the area distribution of different coal mine block areas, that is, the more consistent the sizes of the coal mine blocks in the corresponding image scene.

[0037] In some embodiments of the present application, the degree of dispersion of the areas of all coal mine block regions can be calculated, and the negative value of the degree of dispersion is normalized to be used as the degree of uniformity of the coal mine block regions.

[0038] Among them, the degree of dispersion can specifically use calculation methods such as variance and standard deviation, which are well-known calculation methods in the art and will not be elaborated here. Since the greater the degree of dispersion, the more uneven the corresponding coal mine block area distribution, thus, its negative value can be calculated, and linear normalization of the maximum and minimum values of this negative value is performed to obtain the degree of uniformity.

[0039] Of course, there are various ways to obtain the degree of uniformity of multiple values, which can be selected according to actual calculation requirements and are not limited here.

[0040] It should be noted that since the camera is fixed, that is, the angle of the image it captures is fixed, the larger the total area of the coal mine block regions in the image, the more the distribution of the coal mine blocks themselves, and there is a positive correlation between the total area of the coal mine block regions and the volume characteristic data.

[0041] Among them, the negative correlation means that the dependent variable decreases as the independent variable increases, that is, the larger the number of coal mine block regions, the smaller the corresponding volume characteristic data. On the contrary, the positive correlation means that the dependent variable increases as the independent variable increases. The larger the total area and the degree of uniformity value of the coal mine block regions, the larger the corresponding volume characteristic data.

[0042] Among them, the more the number of all coal mine block regions in any image, that is, the denser its overall distribution, but when the total area of the coal mine block regions is larger and the number is smaller, it indicates that the crushing effect is poor and a greater crushing force is required.

[0043] In the embodiments of the present application, the normalized value of the product of the total area and the degree of uniformity of all coal mine block regions is used as the area influence index; the normalized value of the reciprocal of the number of all coal mine block regions is used as the number influence index; the product value of the area influence index and the number influence index is calculated to obtain the volume characteristic data.

[0044] Then, the larger the value of the volume characteristic data of the initial image, the more the corresponding coal mine blocks to be crushed and the larger the volume of each block, while the value of the volume characteristic data of the target image represents the volume characteristics of the coal mine blocks after crushing and screening by the filter screen.

[0045] S403: Normalize the difference between the volume characteristic data of the initial image and the target image to be used as the flow change data.

[0046] In the embodiments of the present application, the difference in the volume feature data between the initial image and the target image represents the degree of change in the volume of coal blocks during the crushing process, that is, the greater the value of the flow change data, the greater the required crushing effect.

[0047] Therefore, in the embodiments of the present application, by calculating the flow change data, the analysis of the adaptive crushing effect is realized, so that the crushing part can be controlled based on the crushing effect in the subsequent process.

[0048] It should be noted that since the weight data on the filter screen also affects the overall crushing effect, the weight of the filter screen reflects the coal particles present on it. The larger this value indicates that only a small amount of coal with a smaller particle size can pass through the filter screen and enter the sample storage cylinder. And as time delays, the blockage on the filter screen becomes more and more serious. The sample storage cylinder stores samples at fixed intervals of the uniform running of the circulating conveyor device, resulting in a significant reduction in the coal entering the sample storage cylinder, mainly due to insufficient crushing force.

[0049] Therefore, in the embodiments of the present application, according to the weight data and the flow change data, the stacking degree of coal blocks on the filter screen is determined, including: calculating the normalized value of the product of the weight data and the flow change data as the stacking degree of coal blocks on the filter screen.

[0050] That is, the larger the value of the weight data, the more serious the blockage on the filter screen and the greater the stacking of coal blocks. The larger the flow change data, the greater the volume change of coal blocks, which is more troublesome during the crushing process and more likely to cause greater stacking. Therefore, in the embodiments of the present application, the normalized value of the product of the weight data and the flow change data is directly calculated as the stacking degree of coal blocks on the filter screen. The stacking degree directly characterizes the possible stacking effect of coal blocks during the crushing process.

[0051] It should be noted that the higher the stacking degree, the greater the crushing force required for coal blocks at the current stage. In the embodiments of the present application, the running power of the servo motor can be controlled, thereby controlling the rotation speed of the crushing part and further controlling the crushing force.

[0052] Furthermore, in some embodiments of the present application, controlling the running power of the servo motor according to the stacking degree includes: determining the preset maximum power during the running of the servo motor, where the preset maximum power is not higher than the rated power of the servo motor; determining the running power of the servo motor according to the stacking degree and the preset maximum power.

[0053] It should be noted that the preset maximum power corresponds to the maximum power for the motor to rotate. When the preset maximum power is higher than the rated power of the servo motor, the servo motor may be damaged due to excessive operating power. Therefore, the preset maximum power in the embodiments of the present application does not exceed the rated power of the servo motor. That is to say, when the rated power of the servo motor is 10 kw, the corresponding preset maximum power can be 10 kw.

[0054] As can be seen from the above, the stacking degree characterizes the stacking situation of coal blocks inside the crushing device in the current situation. The stacking degree is a normalized value. According to the stacking degree and the preset maximum power, the operating power of the servo motor is determined, including: calculating the product of the stacking degree and the preset maximum power to obtain the operating power of the servo motor.

[0055] That is to say, the present application directly calculates the product of the stacking degree and the preset maximum power as the operating power of the servo motor.

[0056] Of course, in some other embodiments of the present application, other calculation methods can also be used, such that the greater the stacking degree, the greater the operating power of the corresponding servo motor, and the overall does not exceed the preset maximum power.

[0057] It should be noted that the embodiments of the present application can also determine the power adjustment range as a corresponding numerical range. For example, when the preset maximum power is 10 kw, the power adjustment range can be determined as [5 kw, 10 kw], so as to linearly adjust within the range of [5 kw, 10 kw] according to the stacking degree to obtain the operating power.

[0058] In some embodiments of the present application, a recovery device is further included. When the stacking degree is greater than the preset stacking threshold and the difference in the stacking degree between the current moment and the previous moment is greater than the preset stacking difference, the recovery device is started to recover the coal blocks on the filter screen into the sampling cylinder.

[0059] Among them, the preset stacking threshold can be specifically 0.85 for example. That is to say, when the stacking degree is greater than 0.85, it indicates that a large amount of coal is accumulated on the filter screen at the current moment, and blockage is very likely to occur. At this time, the recovery device can be started to recover the coal blocks accumulated on the filter screen into the sampling cylinder and re-enter the crushing device for crushing to ensure the overall operation.

[0060] It should be noted that the recovery device can specifically be a scraper to scrape the coal blocks on the filter screen into the sampling cylinder, or the coal blocks on the filter screen can also be scraped outside the sampling device for coal quality detection of coal, that is, into the environment. Of course, in some other embodiments of the present application, various other structures can also be set, such as stopping sampling and lifting the filter screen, etc., to achieve the recovery effect, and no limitation is imposed on this.

[0061] In the embodiment of the present application, a crushing device is arranged at the connection between the sampling cylinder and the sample output cylinder. Then, according to the crushing device, the crushing effect of coal blocks is achieved, avoiding the situation that due to the relatively large size of coal particles and the relatively large gaps between coal mines, the coal in the sample storage cylinder can no longer be effectively stored, but the weight does not meet the requirements, thus seriously affecting the sampling quality of the sampling device. During the crushing process, in order to ensure the crushing effect, it is necessary to detect and analyze the situation of coal blocks in the crushing device. By setting a second camera, a third camera and a weight monitoring device, an initial image, a target image and the weight data of all coal blocks on the filter screen are obtained. By analyzing, the stacking degree of coal blocks on the filter screen is determined, and the operating power of the servo motor is controlled according to the stacking degree. The servo motor controls the rotation of the crushing part based on the operating power to perform the crushing operation. Thus, the operating power of the servo motor can be adjusted, and then the crushing strength and efficiency of the crushing part can be adjusted, ensuring the consistency of the crushing effect, improving the consistency effect of the sampled coal blocks, and enhancing the stability of sampling.

[0062] It should be noted that the above sequence of embodiments of the present application is only for description and does not represent the superiority or inferiority of the embodiments. The processes depicted in the accompanying drawings do not necessarily require the specific order or continuous order shown to achieve the desired result. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0063] Each embodiment in this specification is described in a progressive manner. For the same or similar parts among the embodiments, reference can be made to each other. Each embodiment focuses on the differences from other embodiments.

Claims

1. A sampling device for mining area sampling quality detection, comprising a sampling module, a moving module and a sample storage module, wherein the sampling module comprises a connected sampling cylinder and a sample outlet cylinder, characterized in that: A crushing device is arranged at the connection between the sampling cylinder and the sample outlet cylinder, and the crushing device comprises a feed port connected to the sampling cylinder, a crushing element, a second camera, a third camera, a filter screen, a weight monitoring device, a discharge port connected to the sample outlet cylinder, and a servo motor; wherein the filter screen is located below the crushing element, and the coal ore blocks enter from the feed port, are crushed by the crushing element, fall into the filter screen, and then are filtered through the filter screen and discharged from the discharge port; The second camera is located above the crushing element and is used to capture an initial image of the uncrushed coal block. The third camera is located below the filter and is used to capture a target image of the coal block below the filter. Image analysis is performed on the initial image and the target image to determine flow change data of the coal block above the crushing element and below the filter. The weight monitoring device is arranged below the filter screen and is used to obtain the weight data of all coal blocks on the filter screen; Determine the accumulation degree of the coal ore blocks on the filter screen according to the weight data and the flow change data, control the operating power of the servo motor according to the accumulation degree, and the servo motor controls the rotation of the crushing element based on the operating power to perform a crushing operation; The method for acquiring flow change data comprises: Performing edge detection on the initial image and the target image respectively, and determining different coal mine block areas according to the edge detection results; According to the distribution of the coal mine block area in each image, volume feature data of the corresponding image is determined; The difference between the volume feature data of the initial image and the target image is normalized to obtain flow change data.

2. A sampling device for mining area sampling quality detection as claimed in claim 1, characterized in that: Determining the volume feature data of the corresponding image according to the distribution of the coal mine block area in each image includes: Determining the uniformity of the coal block area in the corresponding image according to the area distribution of all the coal block areas in the same image; Based on the total area, uniformity and number of all the coal block areas in the same image, the volume characteristic data of the coal block in the corresponding image is determined, wherein the total area and uniformity of the coal block area are positively correlated with the volume characteristic data, and the number of the coal block area is negatively correlated with the volume characteristic data.

3. A sampling device for mining area sampling quality detection as claimed in claim 2, characterized in that: Determining the uniformity of the coal mine block areas according to the area distribution of all the coal mine block areas includes: Determine the degree of dispersion of the areas of all coal mine blocks; The inverse number of the discrete degree is normalized and used as the uniformity of the coal mine block area.

4. A sampling device for mining area sampling quality detection as claimed in claim 2, characterized in that: Determining the volume feature data of the coal block in the corresponding image according to the total area, uniformity and number of all the coal block regions in the same image includes: The normalized value of the product of the total area and the uniformity of all the coal mine block regions is used as the area impact index; taking the normalized value of the reciprocal of the quantity of all the coal mine block areas as the quantity impact indicator; The product value of the area influence index and the quantity influence index is calculated to obtain volume characteristic data.

5. A sampling device for mining area sampling quality detection as claimed in claim 1, characterized in that: Determining the accumulation degree of the coal ore blocks on the filter screen according to the weight data and the flow change data includes: A normalized value of the product of the weight data and the flow change data is calculated as the accumulation degree of the coal blocks on the filter.

6. A sampling device for mining area sampling quality detection as claimed in claim 1, characterized in that: Controlling the operating power of the servo motor according to the accumulation degree includes: Determining a preset maximum power of the servo motor during operation, wherein the preset maximum power is not higher than the rated power of the servo motor; The operating power of the servo motor is determined according to the accumulation degree and the preset maximum power.

7. A sampling device for detecting the quality of mining area sampling as claimed in claim 6, characterized in that: Determining the operating power of the servo motor according to the accumulation degree and the preset maximum power includes: The product of the accumulation degree and the preset maximum power is calculated to obtain the operating power of the servo motor.

8. A sampling device for mining area sampling quality detection as claimed in claim 1, characterized in that: It also includes a light source, which is used to illuminate the shooting range of the second camera when the second camera is shooting.

9. A sampling device for mining area sampling quality detection as claimed in claim 1, characterized in that: It also includes a recovery device. When the accumulation degree is greater than a preset accumulation threshold and the difference between the accumulation degree at the current moment and the previous moment is greater than the preset accumulation difference, the recovery device is started to recover the coal blocks on the filter screen into the sampling tube.

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